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Internal Use Only SERVICE MANUAL MODEL: CM4550 (CM4550, CMS4550F/W)

P/NO : AFN77483203

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MARCH, 2016

Mini Hi-Fi System SERVICE MANUAL MODEL: CM4550

(CM4550, CMS4550F/W)

CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL.

CONTENTS SECTION 1 ........ GENERAL SECTION 2 ........ CABINET & MAIN CHASSIS SECTION 3 ........ ELECTRICAL SECTION 4 ........ REPLACEMENT PARTS LIST

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SECTION 1 SUMMARY CONTENTS SERVICING PRECAUTIONS ................................................................................................................... 1-3 ESD PRECAUTIONS .................................................................................................................................. 1-5 HIDDEN KEY MODE................................................................................................................................... 1-6 SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-7 PROGRAM DOWNLOAD & UPDATE GUIDE ................................................................................... 1-8 1. MCS PROGRAM....................................................................................................................................... 1-8 2. EQ PROGRAM ......................................................................................................................................... 1-9

SPECIFICATIONS ..................................................................................................................................... 1-10

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SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage

1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external pressure or impact.

Storage in conductive bag

Drop impact

2. Repair notes 1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched. 4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged. NEVER look directly at the laser beam, and don’t allow contact with fingers or other exposed skin.

5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort lens. Pressure Magnet

Pressure

How to hold the pick-up Cotton swab

Conductive Sheet 6) Never attempt to disassemble the pick-up. Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

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NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations

1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care. 2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnetism is present, or where there is excessive dust.

2. Notes for repair 1) Before replacing a component part, first disconnect the power supply lead wire from the unit 2) All equipment, measuring instruments and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.) 4) To prevent AC leakage, the metal part of the soldering iron should be grounded. 5) Workers should be grounded by an armband (1 M) 6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Armband

Resistor (1 M)

Resistor (1 M) Conductive Sheet

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ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD)

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials). 7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed. CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.

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HIDDEN KEY MODE Push both Front key and RCU key to activate it for 5 seconds. 1. Disc Lock On/Off (CD Function Only Active)  Front Key : STOP  RCU Key : STOP

2. Check Version and Option code  Front Key : STOP  RCU Key : PLAY/PAUSE  You can change [Audio MCU Version CD Controller Version EEPROM Option] by SKIP+/-.

3. Clear EEPROM  Front Key : STOP  RCU Key : SKIP-

4. Edit EEPROM  Front Key : STOP  RCU Key : SKIP+  You can change the digit of option by SKIP+/-.  You can edit 0~f by REPEAT or PLAY/PAUSE key.

5. Bluetooth DUT  Front Key : STOP  RCU Key : PROGRAM  Bluetooth model only

6. Power Disc Lock On/Off (CD Function Only Active)  Front Key : STOP  RCU Key : EQ

7. Amp Clip On/Off  Front Key : STOP  RCU Key : Mute Amp Clip Mode Change (Amp Clip On --> Amp Clip Off --> Level Down display).

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SERVICE INFORMATION FOR EEPROM POWER ON

FLD no disc status or AUX status.

Remote control ‘Fwd skip’ + Front ‘STOP’ push same timing during 5 seconds.

FLD ‘OP-0….

Move to appropriate position and make changes with remote control ‘skip, mode, play’ key.

Press ENTER key

FLD ‘write ok’

Remote control ‘Fwd skip’ + Front ‘STOP’ push same timing

FLD ‘E2P CLR’

Completed

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PROGRAM DOWNLOAD & UPDATE GUIDE 1. MCS PROGRAM Download program file name must be - HG520_FW_CM4750_DATE.bin If security program (Water Wall) is activated on your PC, you must save the file to the USB storage device and disable the security software, then download the file to your set. Caution: When downloading the file, you should neither unplug the USB device, change to the other function, nor power off the device. USB device must be unplugged when the downloading process is completed.

ON VFD DISPLAY SCREEN NO USB



Insert USB device at USB function.

SEARCH

 FIRMWARE

 FINISH

 POWER OFF MANUALLY

When completed, remove USB device.

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2. EQ PROGRAM Download program file name must be - CM4350: EQ_PRG_CM4350_***.BIN - CM4450/CM4550: EQ_PRG_CM4550_***.BIN - CM4650/CM4750: EQ_PRG_CM4750_***.BIN If security program (Water Wall) is activated on your PC, you must save the file to the USB storage device and disable the security software, then download the file to your set. Caution: When downloading the file, you should neither unplug the USB device, change to the other function, nor power off the device. USB device must be unplugged when the downloading process is completed.

ON VFD DISPLAY SCREEN NO USB



Insert USB device at USB function.

SEARCH

 EQ UP

 FINISH

 POWER OFF AUTOMATICALLY

When completed, remove USB device.

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SPECIFICATIONS • GENERAL Power requirements Power consumption Dimensions (W x H x D) Net Weight (Approx.) Operating temperature Operating humidity Bus Power Supply

Refer to the main label. Refer to the main label. Networked standby : 0.4 W (If all network ports are activated.) (206 x 308 x 284) mm 3.0 kg 5 °C to 35 °C 5 % to 90 % 5V 500 mA

• INPUTS AUX IN Port In

2.0 Vrms (1 kHz, 0 dB), 75 Ω, RCA jack (L, R) 1.2 Vrms (3.5 mm stereo jack)

• TUNER FM Tuning Range

87.5 to 108.0 MHz or 87.50 to 108.00 MHz

• AMPLIFIER Total output Front Subwoofer THD

700 W 230 W X 2 (3 Ω at 1 kHz) 240 W (3 Ω at 1 kHz) 20 %

• CD Frequency Response Signal-to-noise ratio Dynamic range

100 to 20,000 Hz 75 dB 75 dB

• FRONT SPEAKER Type Impedance Rated Input Power Max. Input power Net Dimensions (W x H x D) Net Weight

2 Way 2 Speaker 3Ω 230 W 460 W (266 x 306 x 263) mm 3.1 kg

• SUBWOOFER SPEAKER Type Impedance Rated Input Power Max. Input power Net Dimensions (W x H x D) Net Weight

1 Way 1 Speaker 3Ω 240 W 480 W (266 x 306 x 232) mm 4.7 kg

• Design and specifications are subject to change without notice

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SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS..................................................................................................................................... 2-3 1. 2. 3. 4.

CABINET AND MAIN FRAME SECTION (CM4550) ................................................................................ 2-3 MECHANISM DECK SECTION (DP17TM3) ............................................................................................ 2-5 PACKING ACCESSORY SECTION ......................................................................................................... 2-7 SPEAKER SECTION ................................................................................................................................ 2-8

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EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION (CM4550) NOTES) THE EXCLAMATION POINT WITHIN AN

464

EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.

464

260L

261 464 F

262 460

SMPS E

A47 269

463 264

443

463

464

443 255 263

B

H A

CABLE1 A43

FRONT 443

A42

H

464

255 A46

260R

443

252 CABLE4

464

464

A52

MAIN

G

D

A G

B/T

E

C B

A44

253 251

265

D

259

C

266

464

F

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300

266

2. MECHANISM DECK SECTION (DP17TM3)

1439

1002

1005

A001

1001

1026 1003

1004

1030 1437

1024

1437 1024

1024 1012 1049

1437 1013

1016

1015

1024

1020

1011

A006

1019

A005

1043

1018 1045 1439

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3. PACKING ACCESSORY SECTION

801 Instruction Ass'y

825 FM Wire Antenna

808 Battery

900 Remote Control

803 Packing

804 Bag

803 Packing

802 Box

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4. SPEAKER SECTION 4-1. FRONT SPEAKER (CMS4550F)

A60

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4-2. SUBWOOFER SPEAKER (CMS4550W)

A90

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SECTION 3 ELECTRICAL CONTENTS ONE POINT REPAIR GUIDE ...................................................................................................................3-2 1. 2. 3. 4. 5.

NO POWER ............................................................................................................................................3-2 NO BOOTING WHEN POWER ON THE SET........................................................................................3-4 VFD IS NOT DISPLAYED WHEN POWER ON THE SET .....................................................................3-5 NO OPERATION OF MD ........................................................................................................................3-6 NO SOUND ...........................................................................................................................................3-11

AUDIO ELECTRICAL TROUBLESHOOTING GUIDE ...................................................................3-17 1. 2. 3. 4. 5. 6. 7. 8.

POWER (SMPS) ...................................................................................................................................3-17 MCS PART CHECK ..............................................................................................................................3-20 IC504(M24C16) CHECK .......................................................................................................................3-20 FLD DISPLAY CHECK .........................................................................................................................3-21 PWM MODULATION CHECK ...............................................................................................................3-22 POWER AMP PART CHECK ...............................................................................................................3-24 TUNER / AUX FUNCTION CHECK ......................................................................................................3-25 TUNER FUNCTION CHECK.................................................................................................................3-26

CDP ELECTRICAL TROUBLESHOOTING GUIDE........................................................................3-27

1. CD FUNCTION .....................................................................................................................................3-27 2. DOUBLE USB FUNCTION ...................................................................................................................3-28

WAVEFORMS OF MAJOR CHECK POINT......................................................................................3-29 1. 2. 3. 4.

SDRAM .................................................................................................................................................3-29 SERVO ..................................................................................................................................................3-29 AUDIO PATH ........................................................................................................................................3-30 USB .......................................................................................................................................................3-31

WIRING DIAGRAM....................................................................................................................................3-33 BLOCK DIAGRAMS .................................................................................................................................3-35 1. 2. 3. 4.

SYSTEM BLOCK DIAGRAM ................................................................................................................3-35 SMPS BLOCK DIAGRAM .....................................................................................................................3-37 AUDIO PATH BLOCK DIAGRAM .........................................................................................................3-39 POWER DIAGRAM ...............................................................................................................................3-41

CIRCUIT DIAGRAMS ...............................................................................................................................3-43 1. 2. 3. 4. 5. 6.

SMPS CIRCUIT DIAGRAM ..................................................................................................................3-43 MAIN - DSP CIRCUIT DIAGRAM .........................................................................................................3-45 MAIN - SERVO CIRCUIT DIAGRAM ....................................................................................................3-47 MAIN - ADC/ PWM CIRCUIT DIAGRAM ..............................................................................................3-49 MAIN - AMP CIRCUIT DIAGRAM.........................................................................................................3-51 FRONT CIRCUIT DIAGRAM ................................................................................................................3-53

CIRCUIT VOLTAGE CHART .................................................................................................................3-55

1. ICs .........................................................................................................................................................3-55 2. CAPACITORS .......................................................................................................................................3-57

PRINTED CIRCUIT BOARD DIAGRAMS ..........................................................................................3-59

1. SMPS P.C.BOARD ...............................................................................................................................3-59 2. MAIN P.C.BOARD ................................................................................................................................3-61 3. FRONT P.C.BOARD .............................................................................................................................3-63

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ONE POINT REPAIR GUIDE 1. NO POWER If the unit doesn’t work by no power problem, repair the set according to the following guide. 1-1. FUSE & BRIDGE DIODE 1-1-1. Solution Please check and replace F901, BD901, TH901 or TH903 on SMPS board.

1-1-2. How to troubleshoot (Countermeasure) 1) Check if the fuse F901 is open or short-circuit. 2) Check if the bridge diode BD901 is short-circuit by over current with a digital multi meter. 3) Check if the NTC thermistor TH901 or TH903 is normal or open.

1-1-3. Service hint (Any picture / Remark)

< F901 > If F901 is not short-circuit, replace it with a same specifications one.

< BD901 > If BD901 is short-circuit, replace it with a new one.

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< TH901 > If TH901 is open, replace it with a new one.

ONE POINT REPAIR GUIDE NO POWER If the unit doesn’t work by no power problem, repair the set according to the following guide. 1-2. D951 1-2-1. Solution Please check and replace D951 on SMPS board.

1-2-2. How to troubleshoot (Countermeasure) 1) Check the anode-cathod voltage of D951 with a digital multi-meter, it is normally 0.2 ~ 0.3 V.  If it doesn’t have any voltage, it’s destroyed. Replace it with a new one.

1-2-3. Service hint (Any picture / Remark)

< SMPS schematic diagram > 3-3 Downloaded from www.Manualslib.com manuals search engine

ONE POINT REPAIR GUIDE 2. NO BOOTING WHEN POWER ON THE SET The set doesn’t work when press the power button on the front board or the remote control. 2-1. FLASH MEMORY 2-1-1. Solution Please check and replace IC503 on MAIN board.

2-1-2. How to troubleshoot (Countermeasure) 1) Check 5.6 V to CN501 in standby mode.  If there is no 5.6 V, check the SMPS. 2) Check 12 V, F+, F- and PVDD when power on the set. - If the set doesn’t work regardless of what the KEY1 changes high to low while pressing the power button. X500 and X501 work normally but, if you can not power on the set, replace IC501 with a new one on the MAIN board.

2-1-3. Service hint (Any picture / Remark)

PWR_CTRL(R53D)

IC501 KEY1(R542)

< Signal check point >

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ONE POINT REPAIR GUIDE 3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET When power on the set, any icons or characters on VFD are not displayed. 3-1. VFD 3-1-1. Solution Please check and replace DIG302 on FRONT board.

3-1-2. How to troubleshoot (Countermeasure) 1) Check if VKK, FL+ and FL- are output from SMPS to VFD via the MAIN board. 2) Check if IC501 outputs VFD_D0, VFD_CLK and VFD_STB to the FRONT board. 3) Check the GR signal(pulse signal) of IC408 on the FRONT board. Check the SG signal(pulse signal) of IC408 on the FRONT board.  If the GR and SG signal isn’t output, replace IC408 with a new one.  If the GR and SG signal is output, replace DIG302 with a new one.

3-1-3. Service hint (Any picture / Remark)

GR SIGNAL ABOUT 30 V

GR signal

SG signal

SG SIGNAL ABOUT 30 V Click the picture, and then drag to enlarge it. Check the waveform on details.

< Waveform of GR and SG signal > 3-5 Downloaded from www.Manualslib.com manuals search engine

ONE POINT REPAIR GUIDE 4. NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the SPINDLE MOTOR among them. 4-1. SPINDLE MOTOR 4-1-1. Solution Please check and replace IC407, IC408 on MAIN board.

4-1-2. How to troubleshoot (Countermeasure) 1) Check the SPDO signal from pin24 of IC407.  If no signal, check 3.3 V(RF) and X400. 2) Check the SPIN- & SPIN+ from IC408 to CN405 for driving SPINDLE motor. It is about 3.6 Vp-p.  If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the spindle motor is sort-circuit or has any trouble, it can not rotate CD discs. Please check the function after changing another MD.

4-1-3. Service hint (Any picture / Remark)

Sp+ Pin17 to CN405 About 3.6 Vpp

SpPin18 to CN405 < Waveform of SP- & SP+ for driving SPINDLE motor >

< Signal check point >

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ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the SLED MOTOR among them. 4-2. SLED MOTOR 4-2-1. Solution Please check and replace IC407, IC408 on MAIN board.

4-2-2. How to troubleshoot (Countermeasure) 1) Check the SLDO signal from Pin23 of IC407.  If no signal, check 3.3 V(RF) and X400. 2) Check the SLED+ & SLED- from IC408 to CN405 for driving SPINDLE motor. It is about 2.9 Vp-p.  If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the sled motor is sort-circuit or has any trouble, it can not move the pickup module. Please check the function after changing another MD.

4-2-3. Service hint (Any picture / Remark)

SLED+ Pin11 to CN405

SL- TO CN405 SL+ TO CN405

SLEDPin12 to CN405 < Waveform of SLED- & SLED+ for driving SLED motor >

< Signal check point >

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ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the TRAY OPEN / CLOSE MOTOR among them. 4-3. TRAY OPEN / CLOSE MOTOR 4-3-1. Solution Please check and replace IC407, IC408 on MAIN board.

4-3-2. How to troubleshoot (Countermeasure) 1) Check MOT_OPEN & MOT_CLOSE signals from Pin K4, L4 of IC501 to IC408.  If no signal, check +1.8 V & + 5 V to IC408. 2) Check LOAD± from IC408 to CN405 for driving the tray open / close motor. It is about 3.85 Vp-p.  If no signal, check +5 V to IC408. If it has any trouble, replace it with a new one. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the tray motor is sort-circuit or has any trouble, it can not open or close the tray. Please check the function after changing another MD.

4-3-3. Service hint (Any picture / Remark)

LOAD+ Pin9 to CN405

MOT_OPEN Pin7 to CN405

LOADPin10 to CN405

MOT_CLOSE Pin6 to CN405

MOT_OPEN CLOSE LO- TO CN405 LO+ TO CN405

< Waveform for driving TRAY open / close motor >

< Signal check point >

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ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the pickup module in MD doesn’t work. This step is for checking the LASER TRACKING ACTUATOR. 4-4. LASER TRACKING ACTUATOR 4-4-1. Solution Please check and replace IC407, IC408 on MAIN board.

4-4-2. How to troubleshoot (Countermeasure) The tracking actuator makes the laser beam be positioned in the center of a track on CD disc. 1) Check the TRD signal from Pin22 of IC407.  If no signal, check 3.3 V(RF) and X400. 2) Check TR- & TR+ from IC408 to CN408 for driving the tracking actuator.  If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the pickup module has any trouble, it can not move the laser beam on the left or right side. Please check the function after changing another MD.

4-4-3. Service hint (Any picture / Remark)

TRPin15 to CN405

TR+ Pin16 to CN405 < Waveform of TR± for driving TRACKING actuator >

< Signal check point >

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ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the pickup module in MD doesn’t work. This step is for checking the LASER FOCUSING ACTUATOR. 4-5. LASER FOCUSING ACTUATOR 4-5-1. Solution Please check and replace IC407, IC408 on MAIN board.

4-5-2. How to troubleshoot (Countermeasure) The focusing actuator makes the laser beam keep a regular interval with the surface of a CD disc. 1) Check the FOD signal from Pin21 of IC407.  If no signal, check 3.3 V(RF) and X400. 2) Check F- & F+ from IC408 to CN405 for driving the focusing actuator.  If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD.  If the pickup module has any trouble, it can not move the laser beam on the top or bottom side. Please check the function after changing another MD.

4-5-3. Service hint (Any picture / Remark)

FPin13 to CN405

F+ Pin14 to CN405 < Waveform of TR± for driving FOCUSING actuator >

< Signal check point >

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ONE POINT REPAIR GUIDE 5. NO SOUND There is no sound output in the CD FUNCTION, repair the set according to the following guide. 5-1. IN THE CD FUNCTION 5-1-1. Solution Please check and replace IC501, IC601 on MAIN board.

5-1-2. How to troubleshoot (Countermeasure) 1) Check CD_BCLK, CD_LRCK, & CD_DOUTA signals from IC407 to IC501.  If no signal, check if the RF & servo signals from MD is entered to IC407. Refer to the “No operation of MD” guide on Item 4. 2) Check the following I2S signal flow. < I2S audio signal Interface > - DAC_BCK : IC501_Pin E1 --> IC601_Pin23 - DAC_LRCK : IC501_Pin D1 --> IC601_Pin22 (44.1 kHz) - DAC_DATA : IC501_Pin E2 --> IC601_Pin24 - DAC_MCLK : IC501_Pin D2 --> IC401_Pin44  If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 3) Check if “Digital audio AMP block” on Item 5-2 is normal.

5-1-3. Service hint (Any picture / Remark)

P/UP

IC407 LC78615E (New)

DSP IC501 MLC3730

M

MCS_MCLK (16.93 MHz) MCS_BCK(1.4 MHz)

176PIN BGA USB 2.0 OTG USB 1.1 Host/Device SRAM (10K) SDRAM Controller

Main Processor

Audio DSP-0

ARM 16KB 926EJS I-Cache 16KB D-Cache

DSP SRAM29KB 133Mhz I-Cache 8KB D-Cache 8KB

400Mhz

MCS_DATA_OUT MCS_LRCK(44.1 KHz)

Audio DSP-1 DSP SRAM29KB 133Mhz I-Cache 8KB D-Cache 8KB

I2S (7.1ch) Boot ROM (20KB)

GDMA 2ch SPDIF (Rx, Tx)

Interrupt controller

ADPCM

CDROM x8 speed Decoder GDMA 3ch NAND Controller within BCH codec 14bits ECC

PLL ADC (12bit*5ch)

RTC & Wake up

Timer, Watchdog

UART 4ch (Max)

GPIO (72 Max)

I2C 2ch

SPI 4ch (Max)

SDHC-SDIO 4ch (Max)

Clock Controller Reset Controller Test Controller

< Waveform of I2S audio interface signals >

FR,FL 12.288 MHZ

TAS5624LA

PWM TAS5548 Woofer

TAS5624LA

< I2S Signal Flow > 3-11 Downloaded from www.Manualslib.com manuals search engine

ONE POINT REPAIR GUIDE NO SOUND There is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set according to the following guide. 5-2. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS) 5-2-1. Solution Please check and replace IC701, IC702 on MAIN board.

5-2-2. How to troubleshoot (Countermeasure) 1) Check PWM_FL±, PWM_FR± & PWM_SW± signals from IC601 to IC701 & 702 each input function.  If no signal, check if I2S audio signals are entered to IC601. Refer to “I2S audio signal interface” on Item 5-1. 2) Check PVDD.  If PVDD is abnormal, check the SMPS. 3) Check +12 V for driving the gate of AMP IC. a. All the powers are normal, but if +12 V is low, there is possible for AMP IC to be damaged. b. Remove L710, L711, L712 and L713 one by one. When removed a inductance, if +12 V is recovered, the IC connected to it was damaged. c. Replace the IC with a new one. 4) Check the impedance between IC701/IC702_OUT_A/OUT_B & GND. a. If the impedance is 0 Ω, the IC must be damaged. b. After removing the heat sink, replace it with a new one.

5-2-3. Service hint (Any picture / Remark)

L711 IC702

L712

L710 IC701

L713

< Signal check point > 3-12 Downloaded from www.Manualslib.com manuals search engine

ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the USB FUNCTION, repair the set according to the following guide. 5-3. IN THE USB FUNCTION 5-3-1. Solution Please check and replace IC501 on MAIN board & IC302 on USB board.

5-3-2. How to troubleshoot (Countermeasure) 1) Check +5V_USB to USB board.   If the USB LED are turned on, the voltage is okay, if so not, check +5.6 V to pin6 of CN302. 2) Check USB D1± or USB D2± from MAIN board to USB board. a. Check 2.0_D1±signals(pin U7, U8 ) or 1.1_D1± signals(pin A7, A8 ) to IC501. b. Check USB± signals to CN302(pin1, 2, 4, 5).   If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to the IC is distorted or no signal, replace it with a new one. 3) Check if “Digital audio AMP block” on item 5-2 is normal.

5-3-3. Service hint (Any picture / Remark)

DSP IC501 MLC3730 176PIN BGA USB1_D± USB2_D± USB 2.0 OTG USB 1.1 Host/Device SRAM (10K) SDRAM Controller

Main Processor

Audio DSP-0

ARM 16KB 926EJS I-Cache 16KB D-Cache

DSP SRAM29KB 133Mhz I-Cache 8KB D-Cache 8KB

Boot ROM (20KB)

GDMA 2ch

400Mhz

Audio DSP-1 DSP SRAM29KB 133Mhz I-Cache 8KB

D- to pin 1&4 of CN302

D-Cache 8KB

D+ to pin 2&5 of CN302

I2S (7.1ch) SPDIF (Rx, Tx)

Interrupt controller

ADPCM

CDROM x8 speed Decoder GDMA 3ch NAND Controller within BCH codec 14bits ECC

PLL ADC (12bit*5ch)

RTC & Wake up

Timer, Watchdog

UART 4ch (Max)

GPIO (72 Max)

I2C 2ch

SPI 4ch (Max)

SDHC-SDIO 4ch (Max)

< Waveform of USB D± signal >

Clock Controller Reset Controller Test Controller

FR,FL 12.288 MHZ

TAS5624LA

PWM TAS5548 Woofer

TAS5624LA

< USB function signal flow > 3-13 Downloaded from www.Manualslib.com manuals search engine

ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the AUX FUNCTION, repair the set according to the following guide. 5-4. IN THE AUX FUNCTION 5-4-1. Solution Please check and replace IC201 on MAIN board.

5-4-2. How to troubleshoot (Countermeasure) 1) Check AUX_L/R signals to IC201 (Pin23, 24). 2) Check if MCS_BCK, MCS_LRCK & MCS_MCLK are entered from IC501 to IC201. 3) Check if ADC_DATA is entered from IC201 to IC501.  If no signal, check +5 V & +3.3 V(ADC) for IC201. If is NG, replace it a new one. 4) Check the following I2S signal flow from IC801 to IC602. (Refer to Item 5-1.)  If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.  If AMP is damaged, replace it with a new one.

5-4-3. Service hint (Any picture / Remark)

MCS_MCLK to R220

DSP IC501

MCS_LRCK to R219 AUX_R to R227

MLC3730 176PIN BGA AUX

AUX _L/R

IC201 CS5346

USB 2.0 OTG

Main Processor

USB 1.1 Host/Device SRAM (10K)

ARM 16KB 926EJS I-Cache 400Mhz 16KB D-Cache

133Mhz I-Cache 8KB D-Cache 8KB

SDRAM Controller

Boot ROM (20KB)

GDMA 2ch

Audio DSP-0 DSP

SRAM29KB

MCS_BCK to R216

Audio DSP-1 DSP SRAM29KB 133Mhz I-Cache 8KB D-Cache 8KB

AUX_L to R226 ADC_DATA to R215

I2S (7.1ch) SPDIF (Rx, Tx)

Interrupt controller

ADPCM

CDROM x8 speed Decoder GDMA 3ch NAND Controller within BCH codec 14bits ECC

FR,FL 12.288 MHZ

PLL ADC (12bit*5ch)

RTC & Wake up

Timer, Watchdog

UART 4ch (Max)

GPIO (72 Max)

I2C 2ch

SPI 4ch (Max)

SDHC-SDIO 4ch (Max)

< Signal check point >

Clock Controller Reset Controller Test Controller

TAS5624LA

PWM TAS5548 Woofer

TAS5624LA

< AUX function signal flow >

3-14 Downloaded from www.Manualslib.com manuals search engine

ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the TUNER FUNCTION, repair the set according to the following guide. 5-5. IN THE TUNER FUNCTION 5-5-1. Solution Please check and replace IC201, TU500 on MAIN board.

5-5-2. How to troubleshoot (Countermeasure) 1) Check if TUNER_LR is entered from Pin1, 3 of TU500 to IC201(Pin26, 27).   If no signals, check +3.3 V for tuner power.   Check if the tuner control signals (CLK, DAT, CE, RST, SLT) are entered from IC501 to TU500. If it doesn’t work, replace TUNER with a new one. 2) Check if MCS_BCK, MCS_LRCK, & MCS_MCLK are entered from IC501 to IC201. 3) Check if ADC_DATA is entered from IC201 to IC501.   If no signal, check +5 V & +3.3 V(ADC) for IC201. If is NG, replace it with a new one. 4) Check the following I2S audio signal flow from IC501 to IC601. (Refer to Item 5-1.)   If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.   If AMP is damaged, replace it with a new one.

5-5-3. Service hint (Any picture / Remark)

DSP IC501 MLC3730 176PIN BGA TUNER A

TUNER_L/R

IC201 CS5346

USB 2.0 OTG

Main Processor

USB 1.1 Host/Device SRAM (10K)

ARM 16KB 926EJS I-Cache 400Mhz 16KB D-Cache

133Mhz I-Cache 8KB D-Cache 8KB

SDRAM Controller

Boot ROM (20KB)

GDMA 2ch

Audio DSP-0 DSP

SRAM29KB

TUNER_L to C214

TUNER_R to C215

Audio DSP-1 DSP SRAM29KB 133Mhz I-Cache 8KB D-Cache 8KB

I2S (7.1ch) SPDIF (Rx, Tx)

Interrupt controller

ADPCM

CDROM x8 speed Decoder GDMA 3ch NAND Controller within BCH codec 14bits ECC

FR,FL 12.288 MHZ

PLL ADC (12bit*5ch)

RTC & Wake up

Timer, Watchdog

UART 4ch (Max)

GPIO (72 Max)

I2C 2ch

SPI 4ch (Max)

SDHC-SDIO 4ch (Max)

Clock Controller Reset Controller

< Signal check point >

Test Controller

TAS5624LA

PWM TAS5548 Woofer

TAS5624LA

< TUNER IN function signal flow > 3-15 Downloaded from www.Manualslib.com manuals search engine

ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the PORTABLE FUNCTION, repair the set according to the following guide. 5-6. IN THE PORTABLE FUNCTION 5-6-1. Solution Please check and replace IC201 on MAIN board.

5-6-2. How to troubleshoot (Countermeasure) 1) Check PT_L/R signals to IC201 (Pin9, 10). 2) Check if MCS_BCK, MCS_LRCK, & MCS_MCLK are entered from IC501 to IC201. 3) Check if ADC_DATA is entered from IC201 to IC501.  If no signal, check +5 V & +3.3 V(ADC) for IC201. If NG, replace it a new one. 4) Check the following I2S signal flow from IC501 to IC601. (Refer to Item 5-1.)  If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.  If AMP is damaged, replace it with a new one.

5-6-3. Service hint (Any picture / Remark)

PTB_L to R229 DSP IC501

PTB_R to R228

MLC3730 176PIN BGA PTB_L/R

Portable

IC201 CS5346

USB 2.0 OTG

Main Processor

USB 1.1 Host/Device SRAM (10K)

ARM 16KB 926EJS I-Cache 400Mhz 16KB D-Cache

133Mhz I-Cache 8KB D-Cache 8KB

SDRAM Controller

Boot ROM (20KB)

GDMA 2ch

Audio DSP-0 DSP

SRAM29KB

Audio DSP-1 DSP SRAM29KB 133Mhz I-Cache 8KB D-Cache 8KB

I2S (7.1ch) SPDIF (Rx, Tx)

Interrupt controller

ADPCM

CDROM x8 speed Decoder GDMA 3ch NAND Controller within BCH codec 14bits ECC

FR,FL 12.288 MHZ

PLL ADC (12bit*5ch)

RTC & Wake up

Timer, Watchdog

UART 4ch (Max)

GPIO (72 Max)

I2C 2ch

SPI 4ch (Max)

SDHC-SDIO 4ch (Max)

< Signal check point >

Clock Controller Reset Controller Test Controller

TAS5624LA

PWM TAS5548 Woofer

TAS5624LA

< PORTABLE function signal flow > 3-16 Downloaded from www.Manualslib.com manuals search engine

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 1. POWER (SMPS) No 5.6 VA YES

F901 normal?

NO

Replace F901 (Use the same fuse).

YES

BD901 normal?

NO

Replace BD901.

YES

TH901(TH903) normal?

NO

Replace TH901.

YES

Is Vcc (10 V ~ 18 V) supplied to IC901 Pin7?

NO

D902 normal? NO

Check or replace D902.

YES

D933 / D934 normal?

NO

Replace D933 / D934.

YES

Is there about 2.5 V at IC941 Pin1?

NO

Replace IC941.

YES

D935 normal?

NO

Replace D935.

YES

D932 normal?

NO

Replace D932.

YES

D931 normal?

NO

YES

Power line of main PCB is short. 3-17 Downloaded from www.Manualslib.com manuals search engine

Replace D931.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

No PVDD YES

F901 normal?

NO

Replace F901 (Use the same fuse).

YES

BD901 normal?

NO

Replace BD901.

YES

TH901(TH903) normal?

Is Vcc (10 V ~ 18 V) supplied to IC911 Pin4?

NO

Replace TH901.

NO

D903 normal?

NO

YES

Check or replace D903.

YES

NO

Q911 base "H"? YES

• Check P-CTRL "H" signal from MCS. • Check PC902.

Check or replace Q911.

Q901 normal?

NO

Replace Q901.

YES

D951 normal?

NO

Replace D951.

YES

Is there about 2.5 V at IC951 Pin1?

NO

Replace IC951.

YES

Power line of main PCB is short. 3-18 Downloaded from www.Manualslib.com manuals search engine

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

No 12 V YES

Is Vcc (15 V) supplied to IC931?

NO

Check or replace D935.

YES

IC931 Pin4 “H”?

NO

Check P-CTRL “H” signal from MCS.

YES

Check or replace IC931.

No VFD YES

D931 normal?

NO

Check or replace D931.

YES

ZD931 normal?

NO

Check or replace ZD931.

YES

Q501 / Q502 normal?

NO

YES

Check or replace VFD.

3-19 Downloaded from www.Manualslib.com manuals search engine

Check or replace Q501 / Q502.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 2. MCS PART CHECK MCS PART CHECK YES Check if voltage of CN501 Pin7 is 5.6 VA.

NO

Refer to SMPS troubleshooting.

YES NO

Check if IC510 have 3.3 V output.

Check and change IC510.

YES

NO

Check if IC508 have 1.2 V output.

Check and change IC508.

YES X501: 32.768 kHz, X500: 24 MHz, Check the operation. YES OK

3. IC504(M24C16) CHECK CHECK IC501 PIN. YES Check pinC2, pinB1 DATA : CLK

NO

YES

Check MCS voltage 3.3 VA.

YES OK 3-20 Downloaded from www.Manualslib.com manuals search engine

Refer to MCS troubleshooting.

YES Check MCS.

OK

NO

NO

Replace MCS.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 4. FLD DISPLAY CHECK FLD DISPLAY CHECK YES Check CN501 Pin13,14,15 input voltage.

NO

Refer to SMPS troubleshooting.

YES Check if both end voltage of FL+, FL- are over 2.9 V VKK : over 25.6 V. YES Check CN301 connection and power Pin1, 2, 3(FL+, FL-, VKK), Pin8(5.6 V).

NO

Check CN301 connection. YES Check each Pin voltage.

YES

YES OK Check IC301(MC3401) voltage Pin30 VKK: -25.8 V Pin13, 43: 3.3 V.

NO

If voltage is not 3.4 V.

YES Check IC301.

YES

NO

Replace IC301.

YES OK Check IC501->IC301 data communication STB/ DATA/ CLK

NO

Check input data IC501 Pin F1,F2,G1. YES Check output data IC501 Pin D2.

YES FLD light on? YES OK

YES Check IC501. YES OK

3-21 Downloaded from www.Manualslib.com manuals search engine

NO

Replace IC501.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 5. PWM MODULATION CHECK PWM MODULATION PART CHECK

YES Check CN501 Pin7,8 (5.6 V)

NO

Refer to SMPS troubleshooting.

YES • Check IC601(TAS5548) VDD 3.3 V - Pin9,14.35,50. • Check X601 (12.288 MHz). YES Check X601(12.288 MHz) operation.

NO

Check X601 (12.288 MHz).

NO

Replace X601(12.288 MHz).

YES

YES

Check IC601 Pin21 CLK input.

OK

YES Check IC501 (MLC3730) Pin B3: RESET Pin A1: SDA Pin A2: SCL output.

NO

Check line resistor output RST: R53E / SCL: R53C / SDA: R53B. YES

YES

OK A

3-22 Downloaded from www.Manualslib.com manuals search engine

NO

Replace R53E,R53C,R53B.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

A

YES Check IC601(TAS5548) input data Pin24 PWM wave.

NO

Check CD Assy communication Pin22, 23, 24.

NO

Refer to CD troubleshooting.

NO

Check each line resistor output.

YES YES Check IC601 input data. YES OK

Check PWM modulator output FL: Pin48(-),49(+) FR: Pin46(-),47(+). Other output check.

NO

NO Check IC601.

YES

YES OK

OK

3-23 Downloaded from www.Manualslib.com manuals search engine

Replace IC601.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 6. POWER AMP PART CHECK POWER AMP PART CHECK YES Check CN501 Pin10: +12 V Pin1, 2, 3: 36 V.

NO

Refer to SMPS troubleshooting.

YES Check IC701, IC702 Pin29, 30, 31, 36, 37, 38 input voltage. YES Check IC701, IC702 Pin2: +12 V input.

NO

Check each line resistor output voltage.

YES Check PWM Modulator input IC701 Pin5, 6, 14, 15 / IC702 Pin5, 6. YES Check IC701, IC702 Pin27, 28, 32, 35, 39, 40. YES Check output line coil.

NO

YES OK

3-24 Downloaded from www.Manualslib.com manuals search engine

Replace the coil.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 7. TUNER / AUX FUNCTION CHECK FUNCTION CHECK YES Check IC201 (CS5346) Pin23, 24, 26, 27 input.

NO

Check JK200,TU500.

YES

Check IC201 (CS5346) Pin41 output data.

NO

NO

Check IC201 Pin5: +3.3 V, Pin6: High, Pin14: +5 V.

Check CN501 Pin7,8: +5.6 V.

NO

Check IC201 Pin41: SDOUT, Pin42: SLCK, Pin43: LRCK, Pin44: MCLK. YES

YES IC501(MLC3730) output data.

Replace IC201.

YES OK

3-25 Downloaded from www.Manualslib.com manuals search engine

NO

YES

YES Check IC501(MLC3730) input data.

Check IC201 Pin5: +3.3 V Pin14: +5 V.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE 8. TUNER FUNCTION CHECK TUNER FUNCTION CHECK YES Check tuner module(TU500) operation.

NO

Check tuner module voltage (Pin4: +3.3 V).

YES Check IC501 Pin P8, P10, P11, T15.

NO

YES Refer to function check.

3-26 Downloaded from www.Manualslib.com manuals search engine

Check tuner module data.

CDP ELECTRICAL TROUBLESHOOTIHG GUIDE 1. CD FUNCTION CD FUNCTION YES Can the disc insert?

NO

Is load +,- ok?

YES

NO

Is Motor_open/close OK? (IC408 Pin6,7) YES

YES

Check IC408.

Is Motor ok? (about 12 )

Disc reading is ok?

NO Check loading motor.

NO IM driving (Focus and NO tracking) is ok?

Focus/ tracking/sled signal is ok?

Is the MD(CN404 Pin22) about 190 mV?

Is no signal at spk? YES NO

Check Vcc of IC407.

YES Check the signal (16.0344 MHz) at IC407 Pin51.

NO

Check Cristal (X400).

NO

YES Check IC501 input/output and control line.

Check IC408 (Motor drive IC).

NO

Check IM (pick-up).

YES

YES

Check the signal of IC407 Pin52,53,54.

NO

NO

Replace IC501.

YES Refer to function check.

3-27 Downloaded from www.Manualslib.com manuals search engine

Replace Cristal (X400).

CDP ELECTRICAL TROUBLESHOOTIHG GUIDE 2. DOUBLE USB FUNCTION USB FUNCTION YES Plug-in usb device. YES

Display “NO USB”.

NO

Check USB_5V.

NO

Check CN302.

YES YES Display “READ”.

Check USB_D+/D(R380,R381/ R382,R383).

NO

Check USB jack (JK301/ JK302).

YES YES Display “NO FILE”.

Check IC501 (Pin U7,U8/ A7,A8).

YES Check usb audio file in usb device (MP3, WMA file is playable)

3-28 Downloaded from www.Manualslib.com manuals search engine

NO

Replace IC501.

WAVEFORMS OF MAJOR CHECK POINT 1. SDRAM

CLK 1

DATA

IC502 PIN38 IC502 PIN53

2

ADDRESS IC502 PIN35 3

CS IC503 PIN1

4

2. SERVO

5

CD-16 M IC501 PIN M1

3-29 Downloaded from www.Manualslib.com manuals search engine

3. AUDIO PATH

CD_BCK

IC501 PIN N4

6

CD_LRCK

IC501 PIN N1

7

CD_DATA 8

IC501 PIN N2

DAC_MCLK 9

IC501 PIN D2

DAC_BCK 10

IC501 PIN E1

DAC_LRCK 11

DAC_DATA 12

3-30 Downloaded from www.Manualslib.com manuals search engine

IC501 PIN D1

IC501 PIN E2

4. USB

USB_5 V 13

D+

IC501 PIN A8

D-

IC501 PIN A7

14

3-31 Downloaded from www.Manualslib.com manuals search engine

3-32 Downloaded from www.Manualslib.com manuals search engine

WIRING DIAGRAM

1. [Total CNT : 6 ea]

Power cord

TUNER MODULE

AUX JACK

SPK TERMINAL

1 CD MD

15P

10P

1. FFC Cable MAIN FRONT : 1 EA MAIN MD: 2 EA MAIN BT module: 1 EA

23P

2. Harness Single SMPS MAIN : 1 EA MAIN USB: 1 EA MAIN + CD

8P

SMPS

19P

USB(2EA) + FRONT

3-33

Downloaded from www.Manualslib.com manuals search engine

BT

: Harness : FFC

3-34

BLOCK DIAGRAMS

1. SYSTEM BLOCK DIAGRAM TUNER_L/R

TUNER

A

PWM_RST FL±

TUNER_RST/CE/DAT/CLK

PWM DAT/CLK

REMOCON/KEY PWM_MUTE

IC701 AMP IC TAS5624LA

FR ±

IC601 TAS5548 PWM

IC702 AMP IC TAS5624LA

SW

IC301 ABOV

VFD

DAC_BCK/LRCK/DATA VFD_STB/CLK/DO

FL

FR

SW

AMP_PDN

IM(CMS-S79RFVC6)  OP_SW,CL_SW

AMP_OTW/SD/CLIP/AMP PROTECT

DSP IC501

P/UP F±/TR± SLED± SPIN ± M

IC408 AM5890 Motor Drive

MOT_MUTE/CLOSE/OPEN

CP_RESET/SCL/SDA

IC511 IPOD 2.0C

MLC3730 176PIN BGA

LOAD ±

RX/TX/RTS/CTS/RST/SDA/SCL

BT4.0(New)

SPDO/SLDO/FOD/TRD

LD/VREF A,B,C,D,E,F/ PD

IC407 LC78615E (New)  

CD_16M CD_MCK/RW/DIN_OUT/BUSY CD_RESB CD_BCK/CD_LRCK/CD_DATA

USB 2.0 OTG

Main Processor

USB 1.1 Host/Device SRAM (10K)

ARM 16KB 926EJS I-Cache 400Mhz 16KB D-Cache

DSP 133Mhz I-Cache 8KB D-Cache 8KB

SDRAM Controller

Boot ROM (20KB)

GDMA 2ch

Audio DSP-0 SRAM29KB

Audio DSP-1 DSP SRAM29KB 133Mhz I-Cache 8KB D-Cache 8KB

USB2_D± I2S (7.1ch) SPDIF (Rx, Tx)

Interrupt controller

ADC_RST/CLK/DAT

TUNER A

AUX

AUX_L/R

ADPCM

CDROM x8 speed Decoder

TUNER_L/R

IC201 CS5346

GDMA 3ch

ADC_DATA

PTB_L/R DAC_BCK/DAC_LRCK/DAC_MCLK

NAND Controller within BCH codec 14bits ECC

USB1_D±

ADC (12bit*5ch)

RTC & Wake up

Timer, Watchdog

UART 4ch (Max)

GPIO (72 Max)

I2C 2ch

SPI 4ch (Max)

SDHC-SDIO 4ch (Max)

Portable

DRM_SEL/DRM_CKE/DRM_RAS DRM_CLK/DRM_CAS/DRM_WEN D0~D15/A0~A11/A13~A16

PLL

SF_DI/DO

Clock Controller

SF_CS/CLK(SPI)

Test Controller

2 MB SF_DI/DO

IC504 FLASH W25Q80DVSSIG

1 MB 3-35

Downloaded from www.Manualslib.com manuals search engine

IC503 FLASH W25Q16FVSSIG

Reset Controller

SF_CS/CLK(SPI) PTB_SENSE

3-36

8 MB IC502 SDRAM

2. SMPS BLOCK DIAGRAM

+

FL+

Snubber Block

FLVkk CN901

T R A N S

Main SMPS IC Block

12 V LDO

12 V On/Off 5.6 VA

Noise Filter Block (X-cap Line Filter)

Y-Cap

Feedback

Photo coupler Y-Cap

Photo coupler

On/Off

P.CTL

Snubber

F U S E

T R A N S

Block

AMP SMPS IC With FET Block

PVDD Feedback

Photo coupler 3-37

Downloaded from www.Manualslib.com manuals search engine

3-38

3. AUDIO PATH BLOCK DIAGRAM

12.288 MHz

FR,FL

TAS5624LA

Woofer 

TAS5624LA

230Wx2

PORTABLE  PORTABLE

DAC_LRCK  DAC_BCK  TUNER 

ADC CS5346 (SLAVE) 

DAC_MCLK  DAC_LRCK  DAC_BCK 

AUX 

DAC_DATA 

Tuner

Auxin

ADC_DATA  CD_BCK 

 RF LC78615E 

MLC3730  (176PIN)

CD_LRCK 

CD_DATA 

24MHz

3-39

Downloaded from www.Manualslib.com manuals search engine

32.768 KHz 

3-40

DSP Block

PWM TAS5548

240Wx1

AMPBlock

4. POWER DIAGRAM VKK

25 mA IC30 VFD

VFD

370 mA

RMC

FL ± 5 mA

3 mA

Diode delete

+5.6 VA

RS1G

IC507 DVCC3.3 V LDO TJ4220 To 3965 or 37102

70 mA

IC601 TAS5548 150 mA

IC407 RF IC 10 mA

+5 V IC302 USB PWR LM37102D 1 A IC408 MOTOR AM3053S

Pick up

IC202 DVCC_5 V 450 mA LDO LM37102D 550 mA

SMPS

+3.3 VA

AZ1117BH- ADJ

RS1G

10 mA

80 mA

IC503 FLASH 32Mb

IC502 SDRAM EM639165

IC510 LDO

+3.3 V 10 mA ADC IC201 CS5346

15mA

20 mA

Bluetooth Option

CP Chip Option

IC504 EEPROM 24CS16

IC506 RESET AZ7027

IC505 PWR SENS AZ7027

7 mA

2 mA

2 mA

2 mA

160 mA IC508

1SS355 3EA

AZ1117BH- 1.2

IC701 AMP

8 LED 100 mA

110 mA

3-41

Downloaded from www.Manualslib.com manuals search engine

USB HUB

20 mA

601 mA

310 mA

IC501 MCS MLC3730

USB HUB 38 mA

+4.8 VA

+12 V

20 mA

FAN X 1 100 mA

3-42

+1.2 VA

VDDCORE

2.668 A

TU500 TUNER YST996

VDD33

P_CTRL

Diode delete

CIRCUIT DIAGRAMS

IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL

1. SMPS CIRCUIT DIAGRAM

COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION. THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED.

NOTE : 1. Shaded( ) parts are critical for safety. Replace only with specified part number. 2. Voltages are DC-measured with a digital voltmeter during Play mode.

12

11

10

9

8

7

6

5

4

3

2

1 SMPS EAX66343021-SD_Rev0_1.0 2015. 07. 28 A

B

C

D

E

F

G

H

I

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2. MAIN - DSP CIRCUIT DIAGRAM 12

11

10

9

4

8

9

14

2

13

11

7

10 12 5

6

7

1

6

3

8

5

4

3

2

1 DSP EAX66325701-SD(#01)_Rev6_1.1 2014. 12. 30

: WAVEFORM NUMBER A

B

C

D

E

F

G

H

I

3-45

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3. MAIN - SERVO CIRCUIT DIAGRAM 12

11

10

9

8

7

6

5

4

3

2

1 SERVO EAX66325701-SD(#02)_Rev6_1.1 2014. 12. 30 A

B

C

D

E

F

G

H

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4. MAIN - ADC/ PWM CIRCUIT DIAGRAM 12

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5

4

3

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1 ADC/PWM EAX66325701-SD(#03)_Rev6_1.1 2014. 12. 30 A

B

C

D

E

F

G

H

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3-49

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5. MAIN - AMP CIRCUIT DIAGRAM 12

11

10

9

8

7

6

5

4

3

2

1 AMP EAX66325701-SD(#04)_Rev6_1.1 2014. 12. 30 A

B

C

D

E

F

G

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6. FRONT CIRCUIT DIAGRAM 12

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7

6

5

4

3

2

1 FRONT EAX65586201_Rev2_1.2 2015. 01. 29 A

B

C

D

E

F

G

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3-53

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CIRCUIT VOLTAGE CHART 1. ICs

Location Pin No.

SPEC

EE Mode (V)

Margin

Playback Mode (V)

Margin

Location Pin No.

SPEC

8(VDD)

2.7~3.6

EE Mode (V)

MAIN Board 5(VLC) 14(VA)

3.13~5.25 4.75~5.25

3.24 5.08

Margin

Playback Mode (V)

Margin

3.24

-

IC503 Flash (W25Q64FVSSIG)

IC201 ADC(CS5346) 0.11 0.17

3.24 5.08

0.11 1(VCC)

2

Tray Disc

3) Grasp the both sides of the Tray Disc and lift it up as Figure D, and then pull the Tray Disc until it is separated from the MD Sub Assembly completely.

< Figure C >

3. Tray Disc 1) Insert and push a flat-head screwdriver in the Emergency eject hole (H1) at the right side, so that the Tray Disc is ejected about 15 ~ 20 mm. 2) Pull the Tray Disc until it is locked.

Guide

Tray Disc

< Figure E >

Note

• When reassembling place the Guide as Figure E.

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DECK MECHANISM DISASSEMBLY Gasket Tape

Base Up/Down

1 RE B OR BR D LK N N

BK

RE

2

(D) Deck PCB Assembly

(B)

D

3

(L2)

1 2 (H2)

< Bottom side view > (S2)

Base Main

3 5

Rubber Damper

Figure G-3 (C)

(A)

FFC Cable

Guide

Pick Up Assembly

4

(B) Figure G-1

Figure G-2

Base Up/Down

< Figure G >

5. Base Up/Down Unlock the Locking Tab (L2) in direction of arrow and then lift up the Base Up/Down to separate it from the Base Main.

< Figure F >

Note

4. Pick Up Assembly

• When reassembling move the Guide in direction of arrow (A) until it is positioned as Figure G-1. • When reassembling insert the (B) portion of the Base Up/Down in the (C) portion of the Guide as Figure G-2. • When reassembling insert the (D) portion of the Base Up/Down in the Hole (H2) of the Base Main as Figure G-3.

1) Detach the Gasket Tape. 2) Disconnect the wires (BLK, RED, BRN, ORN) from the Deck PCB Assembly by desoldering. 3) Remove the 4 screws (S2). 4) Disconnect the FFC Cable from the Pick Up Assembly. 5) Remove the 4 Rubber Dampers.

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DECK MECHANISM DISASSEMBLY Base Main

(A) Figure H-1

Guide (B) Gear Loading Gear Pulley (L3)

Base Main < Bottom side view > Belt Loading (L4) RE B OR BR D LK N N

BK

< Bottom side view >

Motor Assembly

RE D

< Bottom side view >

(S3)

Deck PCB Assembly

Deck PCB Assembly

< Figure H >

6. Belt Loading

10. Deck PCB Assembly

Remove the Belt Loading.

1) Disconnect the wires (RED, BK) form the Deck PCB Assembly by desoldering. 2) Remove the 1 screw (S3). 3) Separate the Deck PCB Assembly from the Base Main.

7. Gear Pulley Unlock the Locking Tab (L3) in direction of arrow and then separate the Gear Pulley from the Base Main.

11. Motor Assembly

8. Gear Loading

Unlock the Locking Tab (L4) in direction of arrow and then separate the Motor Assembly from the Base Main.

Remove the Gear Loading.

9. Guide 1) Move the Guide in direction of arrow (A) as Figure H-1. 2) Separate the Guide from the Base Main.

12. FFC Cable Remove the FFC Cable.

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DECK MECHANISM EXPLODED VIEW (DP17TM3)

1439

1002

1005

A001

1001

1026 1003

1004

1030 1437

1024

1437 1024

1024 1012 1049

1437 1013

1016

1015

1024

1020

1011

A006

1019

A005

1043

1018 1045 1439

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