LG OM7560 Schematic

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Page 1

SERVICE MANUAL

CAUTION

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

Internal Use Only

Mini Hi-Fi AUDIO

APRIL, 2016P/NO : AFN77483239

MODEL: OM7560

Page 2

CONTENTS

SECTION 1 ........ GENERAL

SECTION 2 ........ CABINET & MAIN CHASSIS

SECTION 3 ........ ELECTRICAL

SECTION 4 ........ MECHANISM (DM19AC)

SECTION 5 ........ REPLACEMENT PARTS LIST

1-1

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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 GUIDE ...................................................................................................................... 1-8

SPECIFICATIONS ........................................................................................................................................... 1-11

1-2

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1-3

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.

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.

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.

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.

Storage in conductive bag

Drop impact

NEVER look directly at the laser beam, and don’t allow contact with fingers or other exposed skin.

Magnet

How to hold the pick-up

Conductive Sheet

Cotton swab

Pressure

SERVICING PRECAUTIONS

Page 5

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.

Resistor (1 M)

Conductive Sheet

Resistor (1 M)

Armband

1-4

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1-5

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.

ESD PRECAUTIONS

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1-6

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- (CD Model), 0 (DVD Model)

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. Measure Mode (Bypass)

 Front Key : STOP  RCU Key : 8  HW output measure

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POWER ON

VFD “NO DISC” status

It is possible at any function. (ex. It is possible at VFD “NO USB” status, too.) This is an example.

Front ‘Stop’ + Remote control ‘ ’

push same timing during 5 s

FLD “OP00-…..”

Move to appropriate position

And make changes with remote control

“ , , , REPEAT” key.

Press ‘Stop’ Key

VFD “WRITE OK”

Front ‘Stop’ + Remote control ‘ ’

push same timing during 5 s

VFD “E2P CLR”

Completed

1-7

SERVICE INFORMATION FOR EEPROM

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1. AUDIO PROGRAM

Download program file name must be MICOM_OM7560_YYMMDDX.HEX

If security program(Water Wall) is activated on PC, you must save the file to the USB storage device and disable the security software, then download the file to your set. Downloading file proceeds in the same way at USB1 function and USB2 function.

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

1) (Fast) Format USB device.

2) Copy Firmware file to USB device.

NO USB

Insert USB device at USB function.



MICOM UP



FINISH



AUTO POWER OFF

1-8

PROGRAM DOWNLOAD GUIDE

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2. CD PROGRAM

Download program file name must be HG690_OM7560_YYMMDDX.bin

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

1) (Fast) Format USB device.

2) Copy Firmware file to USB device.

NO USB

Insert USB device at USB function.



FIRMWARE



FINISH



AUTO POWER OFF

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3. EQ PROGRAM

Download program file name must be EQ_PRG.BIN

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

1) (Fast) Format USB device.

2) Copy Firmware file to USB device.

NO USB

Insert USB device at USB function.



EQ UP



FINISH



AUTO POWER OFF

1-10

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SPECIFICATIONS

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• GENERAL

Power requirements Refer to the main label. Power consumption Refer to the main label. Dimensions (W x H x D) 330 x 815 x 302 mm Net Weight (Approx.) 16.8 kg Operating temperature 5 °C to 35 °C (41 °F to 95 °F) Operating humidity 5 % to 90 % Bus Power Supply (USB) 5 V 500 mA x 2

• INPUTS

AUX IN 2.0 Vrms (1 kHz, 0 dB), 75 Ω, RCA jack (L, R) x 1 PORT IN 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

Stereo mode 300 W + 300 W (4 Ω at 1 kHz, THD 10 %) Front 300 W + 300 W (4 Ω at 1 kHz, THD 10 %) Woofer 400 W (3 Ω at 200 Hz, THD 10 %)

• CD

Frequency Response 100 to 20 000 Hz Signal-to-noise ratio 75 dB Dynamic range 75 dB

• Design and specifications are subject to change without notice.

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1-12

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SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

DISASSEMBLY INSTRUCTIONS ..................................................................................................................... 2-2

EXPLODED VIEWS ........................................................................................................................................... 2-3

1. CABINET AND MAIN FRAME SECTION ................................................................................................. 2-3

2. MECHANISM DECK SECTION (DM19AC) .............................................................................................. 2-5

3. PACKING ACCESSORY SECTION ......................................................................................................... 2-7

2-1

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2-2

DISASSEMBLY INSTRUCTIONS

Figure 2

Figure 1

2) To disassemble the Front Panel, remove the two screws and disassemble.

1) When disassembling the Frame Top, do not rotate and disassemble by pulling upwards.

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RMC

TOP

MAIN

SMPS

260L

476

475

251

255

254

464

252

464

253

256

258

259

464

475

256

A50

475

270

475

A51

464

271

272

273

A41

475

A47

475

263

475

A46

275

264

476

475

260R

265

476

267

521

475

521

262

475

269

266

475

274

A42

475

270

257

CABLE4

CABLE1

CABLE3

CABLE2

A44

A43

464

A60

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION

NOTES) 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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1439

A001

1002

1005

1001

1003

1004

1026

1043

A005

1016

1013

1015

1020

1439

1018

1019

1012

A006

1045

1049

1437

1024

1437

1011

1030

2. MECHANISM DECK SECTION (DM19AC)

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3. PACKING ACCESSORY SECTION

801 Owner’s manual

803 Packing

802 Box

804 Bag

808 Batteries

825 FM antenna

900 Remote control

300 Power Cord

Optional Part

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2-8

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SECTION 3 ELECTRICAL

CONTENTS

ONE POINT REPAIR GUIDE ............................................................................................................................ 3-2

1. NO POWER ............................................................................................................................................ 3-2

2. NO BOOTING WHEN POWER ON THE SET........................................................................................ 3-3

3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET ..................................................................... 3-4

4. NO BOOTING (IN CD/USB FUNCTION) ................................................................................................ 3-5

5. NO OPERATION OF MD ........................................................................................................................ 3-9

6. NO SOUND ........................................................................................................................................... 3-14

ELECTRICAL TROUBLESHOOTING GUIDE ................................................................................................. 3-22

1. POWER (SMPS) ................................................................................................................................... 3-22

2. MCS PART CHECK .............................................................................................................................. 3-25

3. FLD DISPLAY CHECK ......................................................................................................................... 3-26

4. PWM MODULATION CHECK ............................................................................................................... 3-27

5. POWER AMP PART CHECK ............................................................................................................... 3-28

6. TUNER / AUX FUNCTION CHECK ...................................................................................................... 3-29

7. TUNER FUNCTION CHECK................................................................................................................. 3-30

8. CD FUNCTION CHECK ........................................................................................................................ 3-31

9. DOUBLE USB FUNCTION ................................................................................................................... 3-32

WAVEFORMS OF MAJOR CHECK POINT .................................................................................................... 3-33

1. DSP (IC501) .......................................................................................................................................... 3-33

2. SDRAM (IC502) .................................................................................................................................... 3-34

3. SERVO (IC401) ..................................................................................................................................... 3-35

4. MOTOR DRIVER (IC400) ..................................................................................................................... 3-36

5. ADC (IC201) .......................................................................................................................................... 3-37

6. USB (CN502) ........................................................................................................................................ 3-37

7. BLUETOOTH (CN504) .......................................................................................................................... 3-38

WIRING DIAGRAM .......................................................................................................................................... 3-39

BLOCK DIAGRAMS ........................................................................................................................................ 3-41

1. SYSTEM BLOCK DIAGRAM ................................................................................................................ 3-41

2. POWER BLOCK DIAGRAM ................................................................................................................. 3-43

3. AUDIO PATH BLOCK DIAGRAM ......................................................................................................... 3-45

CIRCUIT DIAGRAMS ...................................................................................................................................... 3-47

1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-47

2. MAIN - CD DSP CIRCUIT DIAGRAM ................................................................................................... 3-49

3. MAIN - SUB MICOM CIRCUIT DIAGRAM ........................................................................................... 3-51

4. MAIN - POWER PART CIRCUIT DIAGRAM ........................................................................................ 3-53

5. MAIN - ADC/ DAC/ PWM CIRCUIT DIAGRAM .................................................................................... 3-55

6. MAIN - RF SERVO CIRCUIT DIAGRAM .............................................................................................. 3-57

7. MAIN - PWM/ AMP CIRCUIT DIAGRAM .............................................................................................. 3-59

8. MAIN - FAN & LED LIGHTING CIRCUIT DIAGRAM ........................................................................... 3-61

9. TOP FRONT CIRCUIT DIAGRAM ........................................................................................................ 3-63

10. JACK/ RMC CIRCUIT DIAGRAM ......................................................................................................... 3-65

11. FRONT LED CIRCUIT DIAGRAM ........................................................................................................ 3-67

CIRCUIT VOLTAGE CHART ........................................................................................................................... 3-69

1. IC INPUT VOLTAGE ............................................................................................................................. 3-69

2. CAPACITOR VOLTAGE ....................................................................................................................... 3-70

3. CONNECTOR VOLTAGE ..................................................................................................................... 3-71

PRINTED CIRCUIT BOARD DIAGRAMS

....................................................................................................... 3-75

1. SMPS P.C.BOARD ............................................................................................................................... 3-75

2. MAIN P.C.BOARD ................................................................................................................................ 3-77

3. TOP FRONT P.C.BOARD .................................................................................................................... 3-81

4. JACK/ RMC P.C.BOARD ...................................................................................................................... 3-85

5. FRONT LED P.C.BOARD ..................................................................................................................... 3-85

3-1

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3-2

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/ THERMISTOR/ BRIDGE DIODE

1-1-1. Solution

Please check and replace F901, TH901 or TH903, BD901 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 NTC thermistor TH900 or TH903 is normal or open.

3) Check if the bridge diode BD901 is short-circuit by over current with a digital multi-meter.

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

< F901 >

If F901 is not short-circuit,

replace it with a same

speciﬁ cations one.

< BD901 >

If BD901 is short-circuit,

replace it with a new one.

If TH901 or TH903 is open,

replace it with a new one.

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3-3

ONE POINT REPAIR GUIDE

NO POWER

If the unit doesn’t work by no PVDD problem, repair the set according to the following guide.

1-2. FUSE/ FET

1-2-1. Solution

Please check and replace F901, Q901 on SMPS board.

1-2-2. How to troubleshoot (Countermeasure)

1) Check if the fuse F901 is open or short-circuit.

2) 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 circuit >

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3-4

ONE POINT REPAIR GUIDE

2. NO BOOTING WHEN POWER ON THE SET

The set doesn’t work when press the power button on the top board or the remote control.

2-1. IC501

2-1-1. Solution

Replace IC501 on MAIN board.

2-1-2. How to troubleshoot (Countermeasure)

1) Check the +12 VA (CN202) and 3.3VA (IC503) in standby mode.  If there is no 12 VA, check the SMPS and if doesn’t appear 3.3 VA, check IC503.

2) Check +12 VA, +5.1 VA, 3.3 VA, DVCC_5V and DVCC_3.3V 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 the IC501 with a new one

on the main board.

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

< MAIN board top view >

< MAIN board bottom view >

X500

(24 MHz)

X501

(32.768 kHz)

KEY1

(R518)

PWR_CTRL

R559

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3-5

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 (VFD301)

3-1-1. Solution

Please check and replace VFD301 on TOP FRONT board.

3-1-2. How to troubleshoot (Countermeasure)

1) Check if VFD_12V, DVCC_3.3V and VCC_5V are output from SMPS to VFD via the main board.

2) Check if the IC501 outputs VFD_CLK, VFD_STB, and VFD_DAT to the top board.

3) Check if the VFD grid current amplifier circuit on the top board. Check the drive signal to the transistor’s(Q801,2) base.  If the control signals from VFD (DGND, VDD) isn’t output, replace VFD with a new one.

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

R812(TP 841) Q801 Emitte r

about

30 Vp-p

< TOP FRONT circuit >

< Waveform of the grid current driver>

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3-6

ONE POINT REPAIR GUIDE

4. NO BOOTING (IN CD/USB FUNCTION)

After you turn on power key and displayed message in the following order (HELLO  VOL XX  CD or USB) on VFD, it will not display other message on VFD, and it will not boot-up normally.

4-1. NO DVCC_3.3V, 1.2 VA

4-1-1. Solution

Please check and replace IC202, IC205 on MAIN board.

4-1-2. How to troubleshoot (Countermeasure)

1) Check Voltage of IC202 pin3 on MAIN board.  If IC202 pin3 (about 5.1 V) & pin1 Input 12 VA doesn’t come out, check +12 VA from SMPS board.

2) If IC202 pin3 (about 5.1 V) is normal, check voltage of IC205 pin3 (about 1.2 VA), pin6 (about 3.3 VA). If IC205 pin3 (about 1.2 VA), pin6 (about 3.3 VA) doesn’t come out, check R253, R254, R256 and R260, R261, R262.

If there’s no defective component then replace IC205.

3) PWR_CTRL is high, check R512 and if there’s no defective component then replace IC505.

PWR_CTRL (IC505 pin3) is high (about 3.2 V)  If PWR_CTRL isn’t high, check pin D11 of IC501 & R512, R513

4) If PWR_CTRL is high, check R559 and if there’s no defective component then replace IC505.

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

< MAIN board top view >

< MAIN board bottom view >

IC505

IC202

IC205

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3-7

ONE POINT REPAIR GUIDE

NO BOOTING (IN CD/USB FUNCTION)

After you turn on power key and displayed message in the following order (HELLO  VOL XX  CD or USB) on VFD, it will not display other message on VFD, and it will not boot-up normally.

4-2. CRYSTAL (X500)

4-2-1. Solution

Replace X500 on MAIN board.

4-2-2. How to troubleshoot (Countermeasure)

1) If 3.3 VA & 1.2 VA is normal, check reset ‘High’ of IC501 pin T12 on MAIN board.

 If MAIN_RESET isn’t high, check MICOM (IC101) pin40.

2) If MAIN_RESET is high, check the soldering status of 24 MHz crystal (X500).

3) If the crystal (X500) doesn’t oscillate, check R508, C502, C503 around crystal (X500).

 If there’s no defective component, then replace X500.

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

X500

< Signal waveform >

< MAIN board top view >

IC501

X500

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3-8

ONE POINT REPAIR GUIDE

NO BOOTING (IN CD/USB FUNCTION)

After you turn on power key and displayed message in the following order (HELLO  VOL XX  CD or USB) on VFD, it will not display other message on VFD, and it will not boot-up normally.

4-3. SERIAL FLASH (IC503)

4-3-1. Solution

Please check and replace IC503 on MAIN board.

4-3-2. How to troubleshoot (Countermeasure)

1) If the crystal (X500) does oscillate, check serial flash (IC503) on MAIN board.

 Check pin8 (VCC), pin6 (CLK), pin1 (CS), pin2 (DO), pin5 (DI) of below waveform.

2) If pin1, 2, 5, 6 doesn’t come out, check registers (R563, R564, R534, R535, R536, R5E4) of IC503.

 If registers of IC503 is OK, then replace IC503. (it need to download program.)

3) After change IC503, if It is still not below waveform, check IC501 (DSP IC).

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

VCC

CLK

CS#

< Signal waveform >

< MAIN board bottom view >

IC503

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3-9

ONE POINT REPAIR GUIDE

5. 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.

5-1. SPINDLE MOTOR

5-1-1. Solution

Replace IC400 on MAIN board.

5-1-2. How to troubleshoot (Countermeasure)

1) Check the SPDO signal from pin16 of IC401.

 If no signal, check DVCC_3.3V and DV 3.3V (RF) and X400.

2) Check the SPIN+ & SPIN- from IC400 to CN401 for driving SPINDLE motor. It is about 3.6 Vp-p.

 If no signal, check M_5 V for IC400.

3) Check if the FFC cable is solidly connected between CN401 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.

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

< Waveform of SP- & SP+

for driving SPINDLE motor >

< MAIN board top view >

SP+: pin18

SP-: pin19

IC400

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3-10

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.

5-2. SLED MOTOR

5-2-1. Solution

Replace IC400 on MAIN board.

5-2-2. How to troubleshoot (Countermeasure)

1) Check the SLDO signal from pin15 of IC401.

 If no signal, check DVCC_3.3V and DV 3.3V(RF) and X400.

2) Check the SPED+ & SLED- from IC400 to CN401 for driving SPINDLE motor. It is about 2.9 Vp-p.

 If no signal, check M_5 V for IC400.

3) Check if the FFC cable is solidly connected between CN401 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.

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

< Waveform of SLED- & SLED+

for driving SLED motor >

SP-

SP+

< MAIN board top view >

SLED+: pin11

SLED-: pin12

IC400

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3-11

< Waveform

for driving tray open/ close motor >

MOT_ CL OSE

MOT_OP EN

LO+(RED)

LO-

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.

5-3. TRAY OPEN/ CLOSE MOTOR

5-3-1. Solution

Replace IC400 on MAIN board.

5-3-2. How to troubleshoot (Countermeasure)

1) Check MOT_OPEN & MOT_CLOSE signals from pin P5, L4 of IC501 to IC400.

 If no signal, check M_5V to IC400.

2) Check LOAD± from IC400 to CN401 for driving the tray open / close motor. It is about 3.85 Vp-p.

 If no signal, check M_5V to IC400. If it has any trouble, replace it with a new one.

3) Check if the FFC cable is solidly connected between CN401 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.

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

< MAIN board top view >

MOT_CLOSE: pin6

MOT_OPEN: pin7

LOAD+: pin9

LOAD-: pin10

IC400

Page 31

3-12

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.

5-4. LASER TRACKING ACTUATOR

5-4-1. Solution

Replace IC400 on MAIN board.

5-4-2. 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 pin14 of IC401.

 If no signal, check DVCC_3.3V & DV_3.3V (RF) and X400.

2) Check TR- & TR+ from IC400 to CN400 for driving the tracking actuator.

 If no signal, check M_5V for IC400.

3) Check if the FFC cable is solidly connected between CN400 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.

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

< Waveform of TR±

for driving tracking actuator >

< MAIN board top view >

TR+: pin16

TR-: pin15

IC400

Page 32

3-13

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.

5-5. LASER FOCUSING ACTUATOR

5-5-1. Solution

Replace IC400 on MAIN board.

5-5-2. 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 FDO signal from pin13 of IC401.

 If no signal, check DVCC_3.3 & DV_3.3V(RF) and X400.

2) Check F- & F+ from IC400 to CN400 for driving the focusing actuator.

 If no signal, check M_5V for IC400.

3) Check if the FFC cable is solidly connected between CN400 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.

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

< Waveform of F±

for driving focusing actuator >

< MAIN board top view >

F+: pin14

F-: pin13

IC400

Page 33

3-14

ONE POINT REPAIR GUIDE

6. NO SOUND

There is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set according to the following guide.

6-1. DIGITAL AUDIO AMP DAMAGE

6-1-1. Solution

Replace IC701, IC702 on MAIN board.

6-1-2. 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.

2) Check PVDD.

 If PVDD is abnormal, check the SMPS.

3) Check AMP_12V for driving the gate of AMP IC.

a. All the powers are normal, but if AMP_12V is low, there is possible for AMP IC to be damaged. b. Remove L701, L702, L703 and L704 one by one. When removed a inductance, if AMP_12V 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.

6-1-3. Service hint (Any picture/ Remark)

< MAIN board top view >

IC701

L703

L702

L701

L704

IC702

IC601

Page 34

3-15

ONE POINT REPAIR GUIDE

NO SOUND

There is no sound output in the CD FUNCTION, repair the set according to the following guide.

6-2. CD FUNCTION

6-2-1. Solution

Replace IC501 on MAIN board.

6-2-2. How to troubleshoot (Countermeasure)

1) Check CD_BCK, CD_LRCK, & CD_DATA signals from IC501 to IC401.

 If no signal, check if the RF & servo signals from MD is entered to IC401. Refer to the “No operation of MD” guide on Item 5.

2) Check the following I2S signal flow. < I2S audio signal Interface >

- MCS_BCK : IC501_pin E1 --> IC601_pin23

- MCS_LRCK : IC501_pin D1 --> IC601_pin22 (44.1 kHz)

- MIX_DATA0_OUT : IC501_pin E2 --> IC601_pin24

- MCS_MCLK : IC501_pin D2 --> IC201_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.

6-2-3. Service hint (Any picture/ Remark)

< Waveform of I2S audio interface signals >

< MAIN - CD DSP circuit >

< MAIN board top view >

IC501

R503

Page 35

3-16

ONE POINT REPAIR GUIDE

NO SOUND

There is no sound output in the USB Function, repair the set according to the following guide.

6-3. USB FUNCTION

6-3-1. Solution

Replace IC204 on MAIN board.

6-3-2. 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 USB_5V to pin5, 6 of CN803.

2) Check USB D1± or USB D2± from MAIN board to TOP 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 CN502(pin1, 2, 8, 9).  If there is any trouble, check the power for IC204. 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 6-1 is normal.

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

USB D-/D+ (CN502 pin1, 2 & pin8, 9)

< Waveform of USB D± signal >

D+

D-

< MAIN board top view >

CN502

Page 36

3-17

ONE POINT REPAIR GUIDE

NO SOUND

There is no sound output in the AUX Function, repair the set according to the following guide.

6-4. AUX FUNCTION

6-4-1. Solution

Replace IC201 on MAIN board.

6-4-2. 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 DVCC_5V & DVCC_3.3V (ADC) for IC201. If is NG, replace it a new one.

4) Check the following I2S signal flow from IC501 to IC601. (Refer to Item 6-2.)

 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 6-1.

 If AMP is damaged, replace it with a new one.

6-4-3. Service hint (Any picture/ Remark)

< AUX function signal ﬂ ow >

< MAIN board bottom view >

MCS_BCK: pin42

MCS_LRCK: pin43

MCS_MLCK: pin44

IC201

Page 37

3-18

ONE POINT REPAIR GUIDE

NO SOUND

There is no sound output in the TUNER function, repair the set according to the following guide.

6-5. TUNER FUNCTION

6-5-1. Solution

Replace IC201 on MAIN board.

6-5-2. How to troubleshoot (Countermeasure)

1) Check if TUNER_LR is entered from pin1, 3 of TU500 to IC201 (pin26, 27).

 If no signals, check DVCC_3.3V 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 DVCC_5V & DVCC_3.3V (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 6-2.)

 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 6-1.

 If AMP is damaged, replace it with a new one.

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

< TUNER function signal ﬂ ow >

< MAIN board bottom view >

TUNER_L: pin26

TUNER_R: pin27

IC201

Page 38

3-19

NO SOUND

There is no sound output in the PORTABLE Function, repair the set according to the following guide.

6-6. PORTABLE FUNCTION,

6-6-1. Solution

Replace IC201 on MAIN board.

6-6-2. How to troubleshoot (Countermeasure)

1) Check if PT_LR 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 DVCC_5V & DVCC_3.3V (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 6-2.)

 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 6-1.

 If AMP is damaged, replace it with a new one.

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

< PORT. IN function signal ﬂ ow >

ONE POINT REPAIR GUIDE

< MAIN board bottom view >

PT_L: pin9

PT_R: pin10

IC201

Page 39

3-20

ONE POINT REPAIR GUIDE

NO SOUND

There is no sound output in the MIC IN function, repair the set according to the following guide.

6-7. MIC IN function

6-7-1. Solution

Replace IC206 on MAIN board, ICA301 on TOP FRONT board.

6-7-2. How to troubleshoot (Countermeasure)

1) Check MIC_SI & MIC_S2 signal to pin5 & 6 of CN201.

 If no signal, Check the signals to pin6 & 8 of CNA301 on the FRONT board. Check if the signal is entered from pin 6 & 8 of CNA301 to pin 5 & 6 of CN201.

2) Check if MIC_SIG is entered from pin 6 of JK302 & JKA303 to pin2, 13 to ICA301 (PRE AMP).

3) Check if the amplified signal comes out from pin3 &12 of ICA301.

 If no signal output, check DVCC_3.3V for ICA301, replace ICA301 with a new one if it has a problem.

4) Check if MCS_BCK, MCS_MLCK & MCS_LRCK is entered from IC501 to IC206.

Check if MIC_DATA_IN is entered from pin9 of IC206 to pin T1of IC501.  If no signal, check DVCC_5V & DVCC_3.3V for IC206. If it is abnormal, change replace it a new one.

5) Check the following I2S signal flow from IC206 to IC501.

 If there is any trouble, check the power for each IC. If the signals are abnormal, replace it a new one.

6) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on item 6-1.

 If AMP is damaged, replace it with a new one.

6-7-3. Service hint (Any picture/ Remark)

IC206

ADC/ MIC_DATA: pin9

MCS_BCK: pin8

MCS_LRCK: pin7

MCS_MCLK: pin6

< MAIN board bottom view >

Page 40

3-21

ONE POINT REPAIR GUIDE

NO SOUND

There is no sound output in the Bluetooth function, repair the set according to the following guide.

6-8. BLUETOOTH FUNCTION

6-8-1. Solution

Replace IC501 on the MAIN board or bluetooth module on the FRONT Panel.

6-8-2. How to troubleshoot (Countermeasure)

1) Check BT_RX, BT_TX signal to pin6, 4 of CN504.

 If no signal, check the signal to pin4, 6 and pin10 (BT_3.3V) of on the Bluetooth module and cable connection state.  If there are no signal out from module, replace new module.

2) Check if BT_RX/TX is entered from pin6, 4 of CN504 to pin L1,K1 to IC501 (DSP).

3) Check if MCS_BCK, MCS_LRCK & MIX_DATA IN is entered from IC501 to IC601.

 If no signal, check +3.3 VA & +1.2 VA for IC501. If it is abnormal, change replace it a new one.

4) Check the following I2S signal flow from IC501 to IC601.

 If there is any trouble, check the power for each IC. If the signals are abnormal, replace it a new one.

5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on item 6-1.

 If AMP is damaged, replace it with a new one.

6-8-3. Service hint (Any picture/ Remark)

IC501

MLC3730

IC601

TPS5548DGG

PWM

MCS_BCK MCS_LRCK MIX_DATA0_OUT

TPS5631B

AMP

B/T Module

BT_RX,

BT_TX

< Bluetooth function signal ﬂ ow >

< MAIN board bottom view >

Page 41

1. POWER (SMPS)

No 12 VA

YES

F901 normal?

Replace F901 (Use the same fuse).

YES

BD901 normal?

Replace BD901.

YES

TH901(TH903) normal?

Replace TH901.

YES

Is Vcc

(10 V ~ 18 V) supplied to

IC901 pin7?

D902 normal?

YES

Check or replace D902.

Is there

about 2.5 V at

IC941 pin1?

Replace IC941.

YES

D951 normal?

ZD932 normal?

Replace D951.

Replace ZD932.

YES

D933 normal?

Replace D933.

YES

Power line of main PCB is short.

3-22

ELECTRICAL TROUBLESHOOTING GUIDE

Page 42

No PVDD

YES

F901 normal?

Replace F901 (Use the same fuse).

YES

BD901 normal? Replace BD901.

YES

TH901(TH903) normal?

Replace TH901.

YES

Is Vcc

(10 V ~ 18 V) supplied to

IC911 pin4?

D903 normal?

YES

Check or replace D903.

•

Check P_CTRL HIGH signal from MCS.

• Check PC902.

Q901 normal? Replace Q901.

Check or replace Q911.

YES

D951 normal?

Replace D951.

YES

Is there about 2.5 V

at IC951 pin1?

Replace IC951.

YES

Q911 base HIGH?

Power line of main PCB is short.

3-23

ELECTRICAL TROUBLESHOOTING GUIDE

Page 43

No LED

Is Vcc (DVCC_3.3V)

supplied to IC103?

Check or replace IC505

YES

Is LED_5V & F_LED_12V is normal?

Check or replace IC207, Q210 & Q209.

YES

Check or replace IC931.

No VFD

YES

VFD_12V is normal?

DVCC_5V & 3.3V is normal?

VFD_CLK, STB, DO is normal?

Check or replace Q209, Q210.

Check or replace Q204 & Q205, IC505.

Check or replace R808, R811, R814.

YES

Check or replace VFD.

3-24

ELECTRICAL TROUBLESHOOTING GUIDE

Page 44

3-25

ELECTRICAL TROUBLESHOOTING GUIDE

2. MCS PART CHECK

YES

MCS PART CHECK

Refer to SMPS troubleshooting.

Check and change IC505.

X501: 32.768 kHz, X500: 24 MHz

Check the operation.

Check and change IC205.

Check if voltage

of CN202 pin1, 2: 12 V.

Check if IC505

have DVCC_3.3V output.

Check if IC205

have 3.3 VA & 1.2 VA output.

Page 45

3-26

3. FLD DISPLAY CHECK

ELECTRICAL TROUBLESHOOTING GUIDE

FLD DISPLAY CHECK

Check

DVCC_5V(Q205 & Q204)

VH : Q801, Q802, D801~D804.

Check CN804 connection.

Check data

IC501 pin C2, B3, B1.

Check each pin voltage.

FLD light on?

Refer to SMPS/MPEG

troubleshooting.

Check

CN202 pin1, 2: 12 V input

voltage.

Check

if both end voltage

of FL+, FL- are over 1.85 V

VH : over 29 V.

Check CN804

connection and DVCC_3.3V of

VDD(C806+).

Check

IC501 -> VFD801

data communication

STB/ DATA/ CLK.

YES

Page 46

3-27

ELECTRICAL TROUBLESHOOTING GUIDE

4. PWM MODULATION CHECK

PWM MODULATION PART

CHECK

• Check IC601(TAS5548) 3.3 V - pin9, 14, 35, 50.

• Check X601 (12.288 MHz).

Replace X601(12.288 MHz).

Check each line resistor output.

Replace IC601.

Refer to

CD troubleshooting.

Replace R5T1, R559, R550.

Check IC601 pin21 CLK input.

Refer to

SMPS troubleshooting.

Check CN202

pin1, 2: 12 V.

Check

X601(12.288 MHz)

operation.

Check IC501 (MLC3730)

pin U13: RESET, pin L14: SDA

pin L13: SCL output.

Check X601

(12.288 MHz).

Check IC601

input data.

Check IC601.

Check

CD Assy communication

Pin22, 23, 24.

Check

IC601(TAS5548) input data

pin24 PWM wave.

Check

PWM modulator output

FL: Pin48(-),49(+). FR: Pin46(-),47(+).

Other output

check.

Check line resistor output

RST: R5T1, SCL: R550,

SDA: R595.

NONO

YES

YESYES

YES

Page 47

3-28

ELECTRICAL TROUBLESHOOTING GUIDE

5. POWER AMP PART CHECK

YES

POWER AMP PART CHECK

Refer to SMPS troubleshooting.

Check each line resistor output voltage.

Replace the coil.

Check IC701, IC702

Pin51, 52, 42, 43, 38, 39, 30, 31 input voltage.

Check PWM modulator input

IC701 pin4, 5/ IC702 pin4, 5, 10, 11.

Check IC701, IC702

pin28, 29, 36, 37, 44, 45, 52, 53.

Check CN202 pin1, 2: 12 V,

pin8, 9, 10: 48.5 V (35.5 V).

Check IC701, IC702

pin64: AMP_12V input.

Check output line coil.

Page 48

3-29

ELECTRICAL TROUBLESHOOTING GUIDE

6. TUNER / AUX FUNCTION CHECK

FUNCTION CHECK

Check CN202 pin1, 2: 12 V.

Check IC201

pin41: SDOUT, pin42: SLCK,

pin43: LRCK, pin44: MCLK.

Replace IC201.

Check IC201

Pin5: DVCC_3.3V,

Pin6: High, Pin14: DVCC_5V.

IC501(MLC3730)

output data.

Check JK200, TU500.

Check

IC201 (CS5346)

pin23, 24, 26, 27

input.

Check IC201

(CS5346) pin41 output

data.

Check

IC501(MLC3730)

input data.

Check IC201 Pin5: DVCC_3.3V Pin14: DVCC_5V.

YES

Page 49

3-30

ELECTRICAL TROUBLESHOOTING GUIDE

7. TUNER FUNCTION CHECK

TUNER FUNCTION CHECK

Check tuner module data.Check IC501 Pin P7, P8, P10, P11.

Check tuner module voltage (pin4: DVCC_3.3V).

Check

tuner module (TU500)

operation.

YES

Refer to function check.

Page 50

3-31

ELECTRICAL TROUBLESHOOTING GUIDE

8. CD FUNCTION CHECK

CD FUNCTION

Is motor_open/close ok?

(IC400 pin6, 7)

Replace cristal (X400).

Check loading motor.

Check IC400.

Check IC400 (Motor drive IC).

Is the MD (PN401 pin22)

about 190 mV?

Check MD (pick-up).

IM driving

(Focus and tracking) is ok?

Check Vcc of IC401.

Replace IC501.

Check cristal (X400).

Is motor ok? (about 12 Ω)

Is no signal at speaker?

Can the

disc insert?

Disc reading

is ok?

Check

the signal of IC401.

Check IC501

input/output and

control line.

Check

the signal (16.9344 MHz)

at IC401 pin49.

Focus,

tracking, sled signal

is ok?

Is load +,- ok?

YES

Refer to function check.

Page 51

3-32

ELECTRICAL TROUBLESHOOTING GUIDE

9. DOUBLE USB FUNCTION

USB FUNCTION

Check USB jack

(CN801, CN802).

Replace IC501.

Check CN502.

Check IC501

(pin U7, U8/ A7, A8).

Display “NO FILE”.

Check USB_5V.

Display “READ”.

Plug-in USB device.

Display “NO USB”.

Check USB_D+, D-

(R573, R574, C573, C574

D501, D502).

YES

Check USB audio file in USB device

(MP3, WMA file is playable)

Page 52

3-33

WAVEFORMS OF MAJOR CHECK POINT

1. DSP (IC501)

Fig 1-2. X500: Crystal of system 24 MHz

( MAIN DSP : R508, C503 )

Fig 1-1. X501: Crystal of RTC 32.768 MHz

(R5D6 both side)

3 4

Page 53

3-34

2. SDRAM (IC502)

Fig 2. SDRAM

Page 54

3-35

3. SERVO (IC401)

Fig 3-2. CD-16M

(IC401 pin31)

Fig 3-1. X400: Crystal 16.9344 MHz

Page 55

3-36

4. MOTOR DRIVER (IC400)

Fig 4-1.

LO- & LO+ / MOT_OPEN &MOT_CLOSE

for Driving TRAY Motor

(IC400 Pin6, 7, 9, 10)

Fig 4-3. SP- & SP+ for Driving SPINDLE Motor

(IC400 Pin17, 18)

Fig 4-2. SL- & SL+ for Driving SPINDLE Motor

(IC400 Pin11, 12)

Page 56

3-37

5. ADC (IC201) 6. USB (CN502)

Fig 6. USB D+/D-

(CN502 Pin1, 2, 8, 9)

Fig 5. ADC I2S

(IC201 Pin42, 43,44)

Page 57

3-38

7. BLUETOOTH (CN504)

BT_TX

BT_RX

BT_RST

BT_TX

BT_RX

BT_RST

BT_TX

BT_RX

BT_RST

Fig 7. BT_TX / BT_RX / BT_RST

Page 58

3-39 3-40

IC501

MLC3730

IC401 RF IC

BU9546

IC601 PWM

TAS5548

IC101

MICOM

R5F100G

IC201

ADC

CS5346

IC206

ADC

PCM1808

IC503 F/S 16M W25Q18

IC502

SDRAM

W9825G6KH

ICA301

MIC AMP

DRV632

IC400

Motor DR

AM5890

IC103

EXPENDER

TLC5928

IC602

DRV632

Tuner

MIC

PTB

33pin

10pin

10pin 23pin

23pin

USB1 USB2

TOP

Control

Board

MAIN Board

Front Board

10pin

module

AUX IN/OUT

BB Light

LED

IC701

TAS5631B

12pin

5pin

SMPS

Harness

FFC

FL/FR

L707

L718 L705

L706

RMC

12pin

10pin

SPK

LED

6 pin

77560 Only

TOP

BOTTOM

IC504

F/S 1M

W25Q80

IC702

TAS5631B

3pin

F A N

WIRING DIAGRAM

Page 59

3-41 3-42

BLOCK DIAGRAMS

1. SYSTEM BLOCK DIAGRAM

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ڨڠڞڣڜکڤڮڨٻ

ڨٻ

ګڊڰګٻ

ڃڱڞڞڐڋڄٻ

ٻ ٻ

گڪګٻ

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ڰڮڝڍٻ

ڤڞڏڋڋٻٻ

ڮڠڭڱڪٻڝڰڔڐڏڑٻ

ڃڏⵤ㋁ڄٻ

ڤڞڍڋڌٻ

ڜڟڞٻ

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ڭڜڮڊڮڠڧڊڞڧڦڊڞڦڠٻ

ڲۊۊہۀۍٻڮۋۀڼۆۀۍٻ

ڧۄۂۃۏۄۉۂٻ

ڜڟڞںڟڜگڜٻ

ڨڞڮںڝڞڦڊڧڭڞڦڊڨڞڧڦٻ

ڡڭڪکگڃڝگڧڄٻ

ڨڋڋںڌڐٻ ڜڋڋںڌڑٻ

ڮڡںڟڤڊڟڪٻ

ڮڡںڞڮڊڮڞڦٻ

ڱڡڟںڮگڝڊڞڧڦڊڟڪڊڭڮگڇٻ

ڨڜڤکٻڱڪڧںڜڊڝڇٻ

ڦڠڴٻڌڊڍٻ

ڎڍڋڲٻ

ڪګںڮڲڇڞڧںڮڲڇڰګںڮڲڇڟکںڮڲڇڟںڮڠکڮڠٻ

ڨڪگںڨڰگڠڇڞڧڪڮڠڇڪګڠکٻ

ڜڇڝڇڞڇڟڇڠڇڡڇګڟٻٻٻ

ڧڟٻ

ڮګڟڪڊڮڧڟڪٻ

ڊڡڪڟڊگڭڟٻ

ڧڪڜڟ൥ڇڮڧڠڟ൥ڇٻ

ڮګڤک൥ڇگڭ൥ڇڡ൥ٻ

ڟڍڮچڊڈٻ

ګڲڨںڧڭڞڦڊڝڞڦڊڟڜگڜٻ

ڞڟںڭڲڊڨڞڧڦڊڧڭڞڦڊڝڞڦڇٻ

ڞڟںڟڜگٻ

ڞڟںڭڮگٻ

ڰڜڭگںڭڳڊگڳٻ

[OM7560 : Total 1000W]

WOOFER : 360W X 1CH FRONT : 320W X 2CH

ڡۊۍٻڜڰڳٻ

ڡۊۍٻڨڤڞٻ

ڌډڌٻڍډڋٻ

ڤڞڌڋڌٻ

ڮېڽٻڨۄھۊۈٻ

ڃٻڭڠکڠڮڜڮٻڄٻ

ګڞڨڌړڋړٻ

ڮڞڭڜگڞڣٻڜڊڝڇٻٻ

ڨںڱڪڧںڜڊڝڇٻ

ڡڜکںڞگڭڧٻڊڍڇٻ

ڟڥٻڠہہۀھۏٻڮھۍڼۏھۃڊڧۀۑۀۇٻ

ڮڲڃګڝگڧڄٻ

ڎڍڋڲٻ

ڎڑڋڲٻ

ڌڨڝٻ

ڮڊڡۇڼێۃٻ

ڮڡںڟڤڊڟڪٻ

ڮڡڍںڞڮڊڮڞڦٻ

ڜڰڳٻڤکٻ

گڰکڠڭٻ

ڃڡڨڊڜڨڄٻ

ګگڝٻ

ڨڤڞٻڌٻ

ڨڤڞٻڍٻ

ڧګڡٻ

ڜڨګٻ

گڜڮڐڑڎڌٻ

ڝګڣڟٻ

ګڲڨٻ

گڜڮڐڐڏړٻ

ڡڭڪکگڃڝگڧڄٻ

ڪګٻڜڨګٻ ڟڭڱڑڎڍٻ

ࣽࣜࣜࣜࣜࣾࣜ

ګڲڨںڧڊڭٻٻٻ

ڟڌچڊڈٻ

ڡڨڊڜڨٻ

ڝڪڪڨٻڝڪڪڨٻ

ڧۄۂۃۏۄۉۂٻ

ڠڳګںڟڜگڜٻڊٻڠڳګٻڞڧڦٻ

ڟڭڱڑڎڍٻ

ڤڭٻٻ

ڭۀھۀۄۑۀۍٻٻ

ࣜࣧࣜࣽࣜࣜࣾࣜ

ࣜ

ࣾࣜ

ڠڳګںڟڜگڜٻڊٻڠڳګٻڞڧڦٻ

ڭڨڞٻٻڤکٻ

ڧڠڟٻ

ڧۄۂۃۏۄۉۂٻ

ڱڡڟٻ

ࣽࣽࣜࣜࣾࣜ

ࣜࣾࣜ

ڞکڏڋڋٻ

ڞکڏڋڌٻ

ڞکڐڋڏٻ

ڞکڐڋڍٻ

گڰڐڋڋٻ

ڞکڑڋڐٻ

Page 60

3-43 3-44

2. POWER BLOCK DIAGRAM

SMPS

+12VA

PVDD_46V

SN1501019

[3A]

TR Switching

12V

TR Switching

12V

TR Switching

12V

VFD

FAN

TR Switching

VCC_5V

MOTO DRIVE

AM5890

CD PICK UP

+5.1VA

DVCC_5V

USB1

USB2

MP2122

[Dual 2A]

MAIN DSP

MLC3730

1.2VA

3.3VA

BD2242G

CS5346

VFD

CS5346

MIC ADC

PCM1808

MIC AMP

DRV632

MIC ADC PCM1808

TUNER

TAS5548

VCC3.3

BT MODULE

3.3VA

TAS5631B

12V

RMC

150mA

20mA

VCC3.3

163mA

500mA

28mA

40mA

50mA

300mA

80mA

350mA

11mA

25mA

RF IC BU9546

5mA

10mA

45mA

MICOM R5F100G

EXPENDER

SPK LED

11mA

60mA

EXPENDER Space LED

11mA

LINE OUT

DRV632

25mA

10mA

SPK LED

135mA

BOOM B LED

300mA

F/S + SDRAM

105mA

32mA

0.7mA

RESET IC

1mA

70mA

VFD F+/ -

150mA

25mA

IC203

SN1501019

[3A]

P-SENSE

46V

12V

LED_5V

+12V

USB_5V

BD2242G

[2.1]

351mA

395mA

553.7mA

1000mA

785mA

330mA

491mA

351mA

1842mA

979mA

70mA

200mA

300mA

1964mA

EXPENDER Front LED

25mA

54mA

TR Switching

12V

110mA

LED

110mA

200mA

46V

12V

Page 61

3-45 3-46

3. AUDIO PATH BLOCK DIAGRAM

MLC3730

Main DSP

SERVO

BU9546KV

(4-speed)

IC201

ADC

CS5346

LINE

OUT

DRV632

TAS5548

PWM

MCLK

BCK

LRCK

ADC_DATA_IN

147

100

MIC_DATA_IN

BCK

LRCK

PWM_ R_IN

MIX_DATA0

MIX_SDIN1

330 470 470 470

CD_16M

CD_BCK

CD_LRCK

CD_DATA

22pF

33pF

MIC

PRE,AMP

DRV632

PCM1808

100

PWM – RCH

PWM – LCH

PWM_ L_IN

AMP

TAS5631

PWM – FLCH

PWM –FRLCH

PWM –WCH

47 47

AUX_DATA

AUX_SDIN2

Page 62

CIRCUIT VOLTAGE CHART

1. IC INPUT VOLTAGE 2. CAPACITOR VOLTAGE

3-69 3-70

Locaton/ Parts Parts Name Speciﬁ cation (V, mV)

110V/60Hz-10% 230V/50Hz+10%

Voltage (V) Voltage (V)

IC101

Microcontrollers

R5F100GEAFB#30 VDD : -0.5~+6.5V VDD : 3.3V VDD : 3.3V

IC102

Voltage Detector

APX809-29SR VIN:1.1~5.5V Vin : 3.3V Vin : 3.3V

IC103

LED Driver

TLC5928PW VIN : 3.0 ~ 5.5V VDD : 3.3V VDD : 3.3V

IC201

Stereo Audio ADC

CS5346-CQZR

VA : 4.75~5.25V VD : 3.13~3.47V

VLS : 3.13~5.25V

VLC : 3.13~5.25V

VA : 5.04V

VD : 3.36V VLS :3.36V VLC :3.36V

VA : 5.04V

VD : 3.36V VLS : 3.36V VLC : 3.36V

IC202

DC,DC Converter

SN1501019 VIN : 4.5~17V Vin : 12V, Vout : 5.1V Vin : 12V, Vout : 5.1V

IC203

DC,DC Converter

SN1501019 VIN : 4.5~17V Vin : 12V, Vout : 5V Vin : 12V, Vout : 5V

IC204

Analog Switch

BD2242G Vin : 2.8~5.5V Vin : 5.1V Vin : 5.1V

IC205

Dual, SYNC Buck

Regulator

MP2122 VIN:2.7~6V

Vin : 5.1V

Vout : 3.3V, 1.2V

Vin : 5.1V

Vout : 3.3V, 1.2V

IC206

A/D Converter

PCM1808

Vcc : 4.5~5.5V (Analog) Vdd : 2.7~3.6V (Digital)

Vcc : 5V (Analog)

Vdd : 3.3V (Digital)

Vcc : 5V (Analog)

Vdd : 3.3V (Digital)

IC400

Motor Driver

AM5890 5ch dvd-p

VCC1 : 4.3~13.2V VCC2 : 4.3~VCC1

VCC1 : 4.96V VCC2 : 4.96V

IC401

digital servo signal

processing

BU9546KV

VDD1 : 2.7~3.6V (Analog)

VDD_CORE : 1.4~1.65V

Vcc : 3.3V Vcc : 3.3V

IC501

IC,Digital Signal

Processors

MLC3730SL

Digital Power 3.3V or 1.2V

3.3V, 1.2VA 3.3V, 1.2VA

IC502

SDRAM

W9825G6KH-6 VDD : 3.0~3.6V VCC : 3.3V VCC : 3.3V

IC503

Serial Flash Memory

W25Q128FVSIG VCC : -0.6~VCC+0.4V VCC : 3.3V VCC : 3.3V

IC504

Serial Flash Memory

W25Q80DVSSIG VCC : -0.6~VCC+0.6V VCC : 3.3V VCC : 3.3V

IC505

Analog Switch

BD2242G Vin : 2.8~5.5V Vin : 3.3V Vin : 3.3V

IC601

Sound/Audio Processor

TAS5548DGG

DVDD : 3~3.6V(Digital)

AVDD_PLL : ~3.6V(Analog)

VCC : 3.3V VCC : 3.3V

IC602

Line Driver

DRV632 VDD:3~3.6V VDD : 3.31V VDD : 3.31V

IC701

Audio Ampliﬁ er

TAS5631BPHD

PVDD : 25~52.5V VDD : 10.8~13.2V

PVDD : 46V

VDD : 12V

PVDD : 46V

VDD : 12V

IC702

Audio Ampliﬁ er

TAS5631BPHD

PVDD : 25~52.5V VDD : 10.8~13.2V

PVDD : 46V

VDD : 12V

PVDD : 46V

VDD : 12V

IC851

LED Driver

TLC5928PW VIN : 3.0 ~ 5.5V VDD : 3.3V VDD : 3.3V

ICA301

Line Driver

DRV632 VDD:3~3.6V VDD:3.31V VDD:3.31V

Location

88 V, 60 Hz 288 V, 60 Hz

Voltage (V) Current (mV) Voltage (V) Current (mV)

C231 4.95 0.00 4.95 0.00

C242 11.82 0.00 11.82 0.00

C272 1.22 0.00 1.22 0.00

C288 3.39 0.00 3.39 0.00

C293 12.02 0.00 12.02 0.00

C402 5.06 0.00 5.06 0.00

C404 3.28 0.00 3.28 0.00

C409 3.28 2.88 3.28 2.88

C416 1.63 0.00 1.63 0.00

C418 1.63 1.63 1.63 1.63

C427 5.07 0.00 5.07 0.00

C501 2.97 0.00 2.97 0.00

C5E4 5.11 0.00 5.11 0.00

C614 3.26 0.00 3.26 0.00

C713 11.87 0.00 11.87 0.00

C714 11.87 0.00 11.87 0.00

C748 43.60 0.00 43.60 0.00

C749 43.60 0.00 43.60 0.00

C752 43.60 0.00 43.60 0.00

C753 43.60 0.00 43.60 0.00

Page 63

3. CONNECTOR VOLTAGE

3-71 3-72

Location

Connector

Name

Pin No. Pin Name Voltage(V)

CN109 MICOM DEBUG1

1 3.3VA 3.29 2 GND 0.00 3 NC 0.00 4 NC 0.00 5 UART_RX 0.12 6 UART_TX 3.29

CN201

MAIN  MIC

SMW200-H12G

1 DVCC_3.3V 3.26 2 3.3VA 3.29 3 DGND 0.00 4 RMC_SIG 3.17 5 MIC_DET 3.24 6 MIC_SIG1 0.00 7 DGND 0.00 8 MIC_SIG2 0.00

9 PT_DET 3.26 10 PT-RCH 0.00 11 PTGND 0.00 12 PT-LCH 0.00

CN202

MAIN  SMPS

1 12V 12.01

2 12V 12.01

3 DGND 0.00

4 P_CTRL 2.84

5 DGND 0.00

6 DGND 0.00

7 DGND 0.00

8 PVDD 43.80

9 PVDD 43.80 10 PVDD 43.80 11 GND 0.00 12 PVDD CTRL 0.00

CN400

MAIN  MD

1 NC/FHM-VCC 4.92

2 RF 2.28

3 DVD_LD 0.01

4 MON(COM)/5V 0.00

5 DVD_VR 0.20

6 GND 0.00

7 VREF/VC 1.62

8 VCC 4.92

9 F 1.85 10 E 1.85 11 A 1.78 12 D 1.82 13 C 1.71 14 B 1.68 15 F(+) 2.69 16 T(+) 2.45 17 T(-) 2.50 18 F(-) 2.26 19 SW_PDIC 4.57 20 GND 0.00 21 CD_LD 1.77 22 MON_MPD 0.21 23 CD_VR 0.00

Location

Connector

Name

Pin No. Pin Name Voltage(V)

CN601 NC_PWM JIG

CLK_FORM UCOM

3.29

DAT_FORM UCOM

3.29 3 CLK_TO PWM 3.29 4 DAT_TO PWM 3.29 5 DGND 0.00

CN602

MAIN

 WOOFER

SPK LED

1 WHITE 4.94 2 GND 0.00 3 WOOFER_R 5.01 4 WOOFER_G 2.04 5 WOOFER_B 0.77

CN604

MAIN  FAN

CONTROL

1 VCC 11.98 2 GND 0.00 3 FG 0.32 4 PWM 0.74

CN605

MAIN  FRONT 12511HS-25SS-K

1 OUT4 0.18 2 OUT5 0.18 3 OUT3 0.18 4 OUT6 0.18 5 OUT2 0.18 6 OUT7 0.18 7 OUT1 0.18 8 OUT8 0.19 9 OUT0 0.18

10 OUT9 0.19 11 GND 0.00 12 VFD_12V 11.95 13 3.3VA 3.31 14 DVCC_5V 4.90 15 DVCC_3.3V 3.26 16 DVCC_5V 4.91 17 VFD_CLK 3.26 18 VFD_STB 3.10 19 VFD_DO 3.09 20 GND 0.00 21 LANDING_GEAR 1.96 22 KEY2 3.29 23 KEY1 3.29 24 MIC_VOL_A 3.26 25 MIC_VOL_B 3.26 26 SCRATCH_A 3.25 27 SCRATCH_B 0.00 28 FILE_S_B 3.26 29 FILE_S_A 0.00 30 MAIN_VOL_B 3.29 31 MAIN_VOL_A 3.29 32 F_LED_12V 11.80 33 GND 0.00

CN701

MAIN  SPK

1 FL+ 22.15 2 FL- 22.15 3 FR+ 22.08 4 FR- 22.10

CN704

MAIN  SPK

1 SW+ 22.19 2 GND 0.00 3 SW- 22.17

Location

Connector

Name

Pin No. Pin Name Voltage(V)

CN401

MAIN  MD

1 OPEN_SW 3.25 2 LO- 0.01 3 CLOSE_SW 3.25 4 LO+ 0.01 5 GND 0.00 6 SP+ 3.40 7 SL+ 2.59 8 SP- 1.56 9 SL- 0.00

10 NC 0.00

CN501 Debug_MCS

1 VDD 3.29 2 NTRST 2.55 3 TDI 3.28 4 TMS 3.28 5 TCK 3.28 6 TDO 0.83 7 RESET 2.89 8 GND 0.00 9 RTCK 3.29

CN502

VOLUME(USB)

 MAIN

1 D2- 0.01 2 D2+ 0.07 3 DGND 0.00 4 USB_5V 5.07 5 USB_5V 5.07 6 USB_5V 5.07 7 DGND 0.00 8 D1- 0.03 9 D1+ 0.03

10 DGND 0.00

CN503 6630R-FB02D

1 RESET 3.28 2 VSS 0.00 3 DOWNLOAD 0.36 4 VDD 3.26

CN504

BT Moudle

 MAIN

1 SDA 0.12 2 SCL 3.29 3 GND 0.00 4 TXD 3.29 5 GND 0.00 6 RXD 3.28 7 RTS 3.09 8 CTS 0.00 9 RESET 3.29

10 VDD 3.29

CN505

MAIN  SPACE LIGHTING

SPACE_EXP_DAT

3.11

SPACE_EXP_CLK

0.00

SPACE_EXP_LAT

0.00 4 DVCC_3.3V 3.25 5 DGND 0.00 6 LED_5V_M 5.09

Page 64

CONNECTOR VOLTAGE

3-73 3-74

Location

Connector

Name

Pin No. Pin Name Voltage(V)

CN801 USB1 (2.0)

1 GND 0.00 2 D+ 0.07 3 D- 0.07 4 USB 5V 5.07 5 GND 0.00 6 GND 0.00

CN802 USB2 (1.1)

1 GND 0.00 2 D+ 0.22 3 D- 0.23 4 USB 5V 5.07 5 GND 0.00 6 GND 0.00

CN803

FROM TOP

 MAIN

1 D2- 0.01 2 D2+ 0.07 3 DGND 0.00 4 USB_5V 5.07 5 USB_5V 5.07 6 USB_5V 5.07 7 DGND 0.00 8 D1- 0.03 9 D1+ 0.03

10 DGND 0.00

CN804

MAIN  FRONT

1 OUT4 0.18 2 OUT5 0.18 3 OUT3 0.18 4 OUT6 0.18 5 OUT2 0.18 6 OUT7 0.18 7 OUT1 0.18 8 OUT8 0.19

9 OUT0 0.18 10 OUT9 0.19 11 GND 0.00 12 VFD_12V 11.95 13 3.3VA 3.31 14 DVCC_5V 4.90 15 DVCC_3.3V 3.26 16 DVCC_5V 4.91 17 VFD_CLK 3.26 18 VFD_STB 3.10 19 VFD_DO 3.09 20 GND 0.00 21 LANDING_GEAR 1.96 22 KEY2 3.29 23 KEY1 3.29 24 MIC_VOL_A 3.26 25 MIC_VOL_B 3.26 26 SCRATCH_A 3.25 27 SCRATCH_B 0.00 28 FILE_S_B 3.26 29 FILE_S_A 0.00 30 MAIN_VOL_B 3.29 31 MAIN_VOL_A 3.29 32 F_LED_12V 11.80 33 GND 0.00

Location

Connector

Name

Pin No. Pin Name Voltage(V)

CN851

MAIN  SPACE LIGHTING

SPACE_EXP_DAT

3.11

SPACE_EXP_CLK

0.00 3 LAT 0.00 4 DVCC_3.3V 3.25 5 DGND 0.00 6 LED_5V_M 5.09

CNA301

MAIN  FRONT

1 DVCC_3.3V 3.26 2 3.3VA 3.29 3 DGND 0.00 4 RMC_SIG 3.17 5 MIC_DET 3.24 6 MIC_SIG1 0.00 7 DGND 0.00 8 MIC_SIG2 0.00 9 PT-DET 3.26

10 PT-RCH 0.00 11 PTGND 0.00 12 PT-LCH 0.00

CNS501

MAIN

 SPAKER

LIGHTING

1 WHITE 4.94 2 GND 0.00 3 WOOFER_R 5.01 4 WOOFER_G 2.04 5 WOOFER_B 0.77

Page 65

3-75 3-76

PRINTED CIRCUIT BOARD DIAGRAMS

1. SMPS P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

NOTE) Warning

Parts that are critical with respect to risk of fire or electrical shock.

Page 66

3-77 3-78

2. MAIN P.C.BOARD

(TOP VIEW)

Page 67

3-79 3-80

MAIN P.C.BOARD

(BOTTOM VIEW)

Page 68

3-81 3-82

3. TOP FRONT P.C.BOARD

(TOP VIEW)

Page 69

3-83 3-84

TOP FRONT P.C.BOARD

(BOTTOM VIEW)

Page 70

3-85 3-86

4. JACK/ RMC P.C.BOARD

(TOP VIEW)

(BOTTOM VIEW)

5. FRONT LED P.C.BOARD

(TOP VIEW)

(BOTTOM VIEW)

Page 71

4-1

SECTION 4

MECHANISM (DM19AC)

CONTENTS

DECK MECHANISM PARTS LOCATIONS

• Top View ................................................................................................................................................... 4-2

• Top View(without Tray Disc) ..................................................................................................................... 4-2

• Bottom View .............................................................................................................................................. 4-2

DECK MECHANISM PARTS LOCATIONS

1. Main Base ............................................................................................................................................... 4-3

1-1. Clamp Assembly Disc ........................................................................................................................ 4-3

1-1-1. Plate Clamp .................................................................................................................................. 4-3

1-1-2. Magnet Clamp .............................................................................................................................. 4-3

1-1-3. Clamp Upper................................................................................................................................. 4-3

2. Tray Disc ................................................................................................................................................. 4-3

3. Base Assembly Sled ............................................................................................................................... 4-4

3-1. Gear Feed .......................................................................................................................................... 4-4

3-2. Gear Middle ....................................................................................................................................... 4-4

3-3. Gear Rack .......................................................................................................................................... 4-4

4. Rubber Rear ............................................................................................................................................ 4-4

5. Frame Assembly Up/Down ..................................................................................................................... 4-5

6. Belt Loading ............................................................................................................................................ 4-5

7. Gear Pulley ............................................................................................................................................. 4-5

8. Gear Loading .......................................................................................................................................... 4-5

9. Guide Up/Down ....................................................................................................................................... 4-5

10. PWB Assembly Loading.......................................................................................................................... 4-5

11. Base Main ............................................................................................................................................... 4-5

DECK MECHANISM EXPLODED VIEW (DM19AC) ......................................................................................... 4-6

Page 72

4-2

DECK MECHANISM PARTS LOCATIONS

Note

When reassembling, perform the procedure in reverse order. The “Bottom” on Disassembly column of above Table indicates the part should be disassembled at the Bottom side.

• Top View(without Tray Disc)

• Bottom View

• Top View

Starting No.

1, 2

1, 2, 3

1, 2, 3, 4

1, 6

1, 2, 6

1, 2, 6, 8

1, 2, 6, 8, 9

1, 2, 7

1, 2

1, 2 ,13

1, 2, 13, 14

1, 2, 7, 12, 13, 14

1, 2, 13

1, 2, 7, 12, 13,

14, 15, 16, 17

Main Base

Clamp Assembly

Disc

Plate Clamp

Magnet Clamp

Clamp Upper

Tray Disc

Base Assembly Sled

Gear Feed

Gear

Middle

Gear Rack

Rubber Rear

Frame Assembly

Up/Down

Belt Loading

Gear Pulley

Gear Loading

Guide Up/Down

PWB Assembly

Base Main

4 Screws,

1 Connector

1 Locking Tabs

1 Screw

1 Locking Tab

1 Hook

2 Screw

2 Locking Tabs

4-1

4-2

4-3

4-4

Bottom

Procedure

Parts Fixing Type Fig.

Disassembly

Page 73

4-3

DECK MECHANISM DISASSEMBLY

1. Main Base (Fig. 4-1)

1-1. Clamp Assembly Disc

1) Place the Clamp Assembly Disc as Fig. (A)

2) Lift up the Clamp Assembly Disc in direction of arrow(A).

3) Separate the Clamp Assembly Disc from the Holder Clamp.

1-1-1. Plate Clamp

1) Turn the Plate Clamp to counterclockwise

direction and then lift up the Plate Clamp.

1-1-2. Magnet Clamp 1-1-3. Clamp Upper

2. Tray Disc (Fig. 4-2)

1) Insert and push a Driver in the emergency eject hole(A) at the right side, or put the Driver on the Lever(B) of the Gear Emergency and pull the Lever(B) in direction of arrow so that the Tray Disc is ejected about 15~20mm.

2) Pull the Tray Disc until it is separated from the Base Main completely.

Fig. 4-2

TRAY DISC

BASE MAIN

LEVER

BASE MAIN

BOTTOM SIDE VIEW

HOLDER

BASE MAIN

Fig. 4-2Fig. 4-1

(Fig. A)

DISC CLAMP ASSEMBLY

MAIN BASE

PLATE CLAMP

MAGNET CLAMP

CLAMP UPPER

Page 74

4-4

3. Base Assembly Sled (Fig. 4-3)

1) Release 4 Screw(S2).

2) Disconnect the FFC Connector(C1)

3-1. Gear Feed 3-2. Gear Middle 3-3. Gear Rack

4. Rubber Rear (Fig. 4-3)

BASE PU

RUBBER DAMPER

Distinguish upper and lower sides (Assemble with care)

RUBBER DAMPER

Fig. 4-3

(S2)

GEAR RACK

GENERAL PICK UP ASSEMBLY

SPINDLE MOTOR ASSEMBLY

Page 75

4-5

Frame Assembly Up/Down (Fig. 4-4)

Note

Put the Base Main face down(Bottom Side)

1) Release the screw(S4)

2) Unlock the Locking Tab(L3) in direction of arrow and then lift up the Frame Assembly Up/Down to separate it from the Base Main.

Note

• When reassembling move the Guide Up/Down

in direction of arrow(C) until it is positioned as Fig.(C).

• When reassembling insert (A) portion of the

Frame Assembly Up/Down in the (B) portion of the Guide Up/Down as Fig.(B)

6. Belt Loading(Fig. 4-4)

Note

Put the Base Main on original position(Top Side)

7. Gear pulley (Fig. 4-4)

1) Unlock the Locking Tab(L4) in direction of arrow(B) and

then separate the Gear Pulley from the Base Main.

8. Gear Loading (Fig. 4-4)

9. Guide Up/Down (Fig. 4-4)

1) Move the Guide Up/Down in direction of arrow(A) as Fig.(A)

2) Push the Locking Tab(L5) down and then lift up the Guide Up/Down to separate it from the Base Main.

Note

When reassembling place the Guide Up/Down as Fig.(C)

and move it in direction arrow(B) until it is locked by the Locking Tab(L5). And confirm the Guide Up/Down as Fig.(A)

10. PWB Assembly Loading(Fig. 4-4)

Note

Put the Base Main face down(Bottom Side)

1) Release 1 Screws(S5)

2) Unlock the Loading Motor (C2) from the Hook (H1) on the Base Main.

3) Unlock 2 Locking Tabs(L6) and separate the PWB Assembly Loading from the Base Main.

11. Base Main(Fig. 4-4)

GEAR PULLEY

BELT LOADING

PWB ASSEMBLY LOADING

BASE MAIN

(C2)

(S5)

Fig. 4-4

(L4)

GEAR LOADING

GUIDE UP/DOWN

(B)

(L5)

FIG. (A)

UP/DOWN FRAME ASSEMBLY

(A)

GUIDE UP/DOWN

BASE MAIN

(B)

(C)

GUIDE UP/DOWN

(A)

(B)

Page 76

4-6

DECK MECHANISM EXPLODED VIEW (DM19AC)

1439

A001

1002

1005

1001

1003

1004

1026

1043

A005

1016

1013

1015

1020

1439

1018

1019

1012

A006

1045

1049

1437

1024

1437

1011

1030

LG OM7560 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual