LG CM5660, CMS5760F, CMS5660 Schematic

SERVICE MANUAL

SERVICE MANUAL

CAUTION

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

Internal Use Only

OCTOBER, 2016

MODEL: CM5660 (CM5660, CMS5760F)

MODEL: CM5660

(CM5660, CMS5760F)

MINI HI-FI SYSTEM

P/NO : AFN77612031

CONTENTS

SECTION 1 ........ GENERAL

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

SECTION 3 ........ ELECTRICAL

SECTION 4 ........ REPLACEMENT PARTS LIST

1-1

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

1-2

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

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.

1-3

Pressure

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

1-4

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.

1-5

HIDDEN KEY MODE

HIDDEN MODE ENTRANCE KEY EXIT KEY

Version Check

EEPROM Initial

Option EDIT

APD Test Display Front ‘Stop’ + Remote Control Key ‘3’ for 5 s Auto Exit

Clip Front ‘Stop’ + Remote Control Key ‘Mute’ for 5 s Auto Exit

Disc Lock
On/ Off

Power Disc Lock
On/ Off

Demo All Key Lock Front ‘Stop’ + Remote Control Key ‘9’ for 5 s Front ‘Stop’ + Remote Control Key ‘9’ for 5 s

Bluetooth Auto Power
On/ Off

Child Safe
On/ Off

Front ‘Stop’ + Remote Control Key ‘ ’ for 5 s Remote Control Key ‘ ’ for 1.5 s

Front ‘Stop’ + Remote Control Key ‘

Front ‘Stop’ + Remote Control Key ‘

Front ‘Stop’ + Remote Control Key ‘Stop’ for 5 s Front ‘Stop’ + Remote Control Key ‘Stop’ for 5 s

Front ‘Stop’ + Remote Control Key ‘Region EQ’ for 5 s

or

Front ‘Stop’ + Front ‘Open’ for 5 s

Front/ Remote Control Key ‘Power’ for 5 s

Volume 0 (Min) + Front ‘Enter’ for 3 s Volume 0 (Min) + Front ‘Enter’ for 3 s

/ /

’ for 5 s

Auto Exit

’ for 5 s Front ‘Stop’ + Remote Control Key ‘ ’

Front ‘Stop’ + Remote Control Key ‘Region EQ’ for 5 s

Front ‘Stop’ + Front ‘Open’ for 5 s

Front/ Remote Control Key ‘Power’ to SET ‘Power Off’

or

1-6

SERVICE INFORMATION FOR EEPROM

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”

DETECT NEW EEPROM
(OPTION EDIT SCREEN)

NAME

OPT0
OPT1
OPT2
OPT3
OPT4
OPT5
OPT6
OPT7
OPT8
OPT9
OPT10
OPT11
OPT12
OPT13
OPT14

HEX

00
00
00
00
00
00
00
00
00
00
00
00
00
00
00

Front ‘Stop’ + Remote control ‘ ’

push same timing during 5 s

VFD “E2P CLR”

Completed

1-7

PROGRAM DOWNLOAD GUIDE

1. DSP PROGRAM

Download program file name must be HG640_CM5760(CM5660)_YYMMDDX.bin

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

NO USB

Insert USB device at USB function.

SEARCH



FIRMWARE



FINISH



AUTO POWER OFF

1) (Fast) Format USB device.

2) Copy Firmware file to USB device.

1-8

2. EQ PROGRAM

Download program file name must be EQ_PRG.BIN

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

NO USB

Insert USB device at USB function.

SEARCH



EQ UP



FINISH



AUTO POWER OFF

1) (Fast) Format USB device.

2) Copy Firmware file to USB device.

1-9

SPECIFICATIONS

• GENERAL

Power requirements Refer to the main label on the unit.
Power consumption Refer to the main label on the unit.
Networked standby : 0.5 W (If all network ports are activated.)
Dimensions (W x H x D) Approx. 207 mm x 282 mm x 261 mm
Net Weight Approx. 3.5 kg
Operating temperature 5 °C to 35 °C
Operating humidity 5 % to 90 %

• INPUTS

Analog audio in (AUX IN) 2.5 Vrms (1 kHz, 0 dB), 75 Ω, RCA jack (L, R)
Portable in (PORT. IN) 1.4 Vrms (3.5 mm stereo jack) x 1
Microphone (MIC) Sensitivity 20 mV (1 kHz), 6.3 mm jack x 1

• TUNER

FM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHz
AM Tuning Range 522 to 1,620 kHz, 520 to 1,710 kHz or 522 to 1,710 kHz

• SYSTEM

Frequency Response 70 to 20,000 Hz
Signal-to-noise ratio More than 75 dB
Dynamic range More than 75 dB
Bus Power Supply (USB) 5 V 500 mA

• AMPLIFIER (RMS OUTPUT POWER)

Total 700 W
Front 350 W x 2 (4 Ω at 1 kHz, 20 % THD)

• FRONT SPEAKER

Type 2 Way 2 Speaker
Impedance 4 Ω
Rated Input Power 350 W
Max. Input power 700 W
Net Dimensions (W x H x D) Approx. 299 mm x 363 mm x 230 mm
Net Weight Approx. 5 kg

• Design and specifications are subject to change without notice.

1-10

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

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

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

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

3. SPEAKER SECTION ................................................................................................................................ 2-8

2-1

2-2

FRONT

MAIN

SMPS

300300

B/T

E

C

D

H

D

G

G

F

C

B

A

H

F

E

A52

A42

443

443

259

443

A47

443

264

443

263

A46

265

A44

266

269

262

443

443

260

443

443

251

443

443

443

255

255

443

254

A43

A56

498

CABLE1

CABLE4

A

B

443

A00

300300

H

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.

2. PACKING ACCESSORY SECTION

801 Owner’s manual

825 FM Wire Antenna

804 Bag

808 Battery

900 Remote Control

803 Packing

803 Packing

802 Box

2-7

3. SPEAKER SECTION

A60

2-8

SECTION 3

ELECTRICAL

CONTENTS

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

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

2. NO BOOTING WHEN POWER ON THE SET........................................................................................ 3-4

3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET ..................................................................... 3-5

4. NO BOOTING (IN CD/USB FUNCTION) ................................................................................................ 3-6

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 (IC500) .......................................................................................................................................... 3-33

2. SDRAM (IC504) .................................................................................................................................... 3-34

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

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

5. ADC (IC202) .......................................................................................................................................... 3-37

6. USB (JK500) ......................................................................................................................................... 3-37

7. BLUETOOTH (CN501) .......................................................................................................................... 3-38

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

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

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

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

CIRCUIT DIAGRAMS ...................................................................................................................................... 3-45

1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-46

2. MAIN - DSP SoC CIRCUIT DIAGRAM ................................................................................................. 3-47

3. MAIN - POWER PART CIRCUIT DIAGRAM ........................................................................................ 3-49

4. MAIN - ADC/DAC CIRCUIT DIAGRAM ................................................................................................ 3-51

5. MAIN - RF SERVO CIRCUIT DIAGRAM .............................................................................................. 3-53

6. MAIN - PWM/AMP IC CIRCUIT DIAGRAM .......................................................................................... 3-55

7. FRONT CIRCUIT DIAGRAM ................................................................................................................ 3-57

8. JACK CIRCUIT DIAGRAM ................................................................................................................... 3-59

CIRCUIT VOLTAGE CHART ........................................................................................................................... 3-61

1. ICs VOLTAGE ....................................................................................................................................... 3-61

2. CAPACITORS VOLTAGE ..................................................................................................................... 3-62

PRINTED CIRCUIT BOARD DIAGRAMS ....................................................................................................... 3-63

1. SMPS P.C.BOARD ............................................................................................................................... 3-63

2. MAIN P.C.BOARD ................................................................................................................................ 3-65

3. FRONT P.C.BOARD ............................................................................................................................. 3-67

4. JACK P.C.BOARD ................................................................................................................................ 3-69

3-1

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.

<TH901 or TH903 >

If TH901 or TH903 is open,

replace it with a new one.

3-2

< BD901 >

If BD901 is short-circuit,

replace it with a new one.

ONE POINT REPAIR GUIDE

1. 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 >

3-3

ONE POINT REPAIR GUIDE

X500

(24 MHz)

X501

(32.768 kHz)

KEY1

(R518)

PWR_CTRL

(R577)

IC500

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. IC500

2-1-1. Solution

Please check and replace IC500 on MAIN board.

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

1) Check the +12 VA (CN102) and 3.3 VA (IC501) in standby mode.
 If there is no 12 VA, check the SMPS and if doesn’t appear 3.3 VA, check IC501.

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 IC500 with a new one

on the MAIN board.

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

KEY1

(R518)

PWR_CTRL

(R577)

X500

(24 MHz)

IC500

X501

(32.768 kHz)

< MAIN board top view >

3-4

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 (VFD300)

3-1-1. Solution

Please check and replace VFD300 on 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 FRONT board.

3) Check if the VFD grid current amplifier circuit on the FRONT board.

Check the drive signal to the transistor’s(Q801, Q802) 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)

< FRONT circuit >

R307(TP302)
Q300 Emitter

< Waveform of the grid current driver>

about

30 Vp-p

3-5

ONE POINT REPAIR GUIDE

IC103

IC100

IC102

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 IC100, IC102 on MAIN board.

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

1) Check voltage of IC102 pin3 on MAIN board.

 If IC102 pin3 (about 5.1 V) & pin1 Input 12 VA doesn’t come out, check +12 VA from SMPS board.

2) If IC102 pin3 (about 5.1 V) is normal, check voltage of IC100 pin3 (about 1.2 VA), pin6 (about 3.3 VA).

If IC100 pin3 (about 1.2 VA), pin6 (about 3.3 VA) doesn’t come out, check R100, R101, R102 and R112, R113, R114.

If there’s no defective component then replace IC100.

3) PWR_CTRL is high, check R116 and if there’s no defective component then replace IC103.

PWR_CTRL (IC103 pin3) is high (about 3.2 V)
 If PWR_CTRL isn’t high, check pin D11 of IC500 & R116, R117.

4) If PWR_CTRL is high, check R577 and if there’s no defective component then replace IC103.

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

IC103

IC100

IC102

< MAIN board top view >

3-6

ONE POINT REPAIR GUIDE

XI

XO

X500

IC500

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.

4-2. 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 IC500 pin T12 on MAIN board.

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

3) If the crystal (X500) doesn’t oscillate, check R574, C544, C547 around crystal (X500).

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

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

X500

IC500

< MAIN board top view >

X

X500

< Signal waveform >

3-7

ONE POINT REPAIR GUIDE

VCC

CLK

DO

CS#

IC501

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.

4-3. SERIAL FLASH (IC501)

4-3-1. Solution

Please check and replace IC501 on MAIN board.

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

1) If the crystal (X500) does oscillate, check serial flash (IC501) 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 (R595, R596, R570, R571, R572, R569) of IC501.

 If registers of IC500 is OK, then replace IC500. (it need to download program.)

3) After change IC500, if It is still not below waveform, check IC500 (DSP IC).

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

V

IC501

< MAIN board top view >

< Signal waveform >

3-8

ONE POINT REPAIR GUIDE

SPIN+ (TP421)
SPIN- (TP423)

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 moter among
them.

5-1. SPINDLE MOTOR

5-1-1. Solution

Please check and 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 3.3 V (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 >

SPIN+ (TP421)
SPIN- (TP423)

< MAIN board bottom view >

3-9

ONE POINT REPAIR GUIDE

SLED+ (TP422)
SLED- (TP424)

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 SLED MOTOR among them.

5-2. SLED MOTOR

5-2-1. Solution

Please check and 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_5V 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)

SP+

SP-

< Waveform of SLED- & SLED+

for driving SLED motor >

SLED+ (TP422)
SLED- (TP424)

< MAIN board bottom view >

3-10

ONE POINT REPAIR GUIDE

MOT_CLOSE: pin6

MOT_OPEN: pin7

LOAD+: pin9

LOAD-: pin10

IC400

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 TRAY OPEN/CLOSE
MOTOR among them.

5-3. TRAY OPEN/CLOSE MOTOR

5-3-1. Solution

Please check and replace IC400 on MAIN board.

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

1) Check MOT_OPEN & MOT_CLOSE signals from pin P5, L4 of IC500 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)

LO-

LO+(RED)

MOT_OP EN

MOT_ CL OSE

< Waveform

for driving tray open/ close motor >

LOAD+: pin9

LOAD-: pin10

< MAIN board top view >

MOT_CLOSE: pin6

MOT_OPEN: pin7

IC400

3-11

ONE POINT REPAIR GUIDE

TR+: pin15

TR-: pin16

IC400

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 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

Please check and 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 >

IC400

TR+: pin15

TR-: pin16

< MAIN board top view >

3-12

ONE POINT REPAIR GUIDE

F-: pin13

F+: pin14

IC400

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 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

Please check and 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 >

F-: pin13

F+: pin14

< MAIN board top view >

IC400

3-13

ONE POINT REPAIR GUIDE

IC500

6. NO SOUND

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

6-1. CD FUNCTION

6-1-1. Solution

Please check and replace IC500 on MAIN board.

6-1-2. How to troubleshoot (Countermeasure)

1) Check CD_BCK, CD_LRCK, & CD_DATA signals from IC500 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 : IC500_pin E1 --> IC700_pin23

- MCS_LRCK : IC500_pin D1 --> IC700_pin22 (44.1 kHz)

- MIX_DATA0_OUT : IC500_pin E2 --> IC700_pin24

- MCS_MCLK : IC500_pin D2 --> IC102_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.

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

< MAIN - DSP circuit >

< Waveform of I2S audio interface signals >

3-14

IC500

< MAIN board top view >

ONE POINT REPAIR GUIDE

IC702

L703

L701

L702

L704

IC701

IC700

6. NO SOUND

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

6-2. DIGITAL AUDIO AMP DAMAGE

6-2-1. Solution

Please check and replace IC701, IC702 on MAIN board.

6-2-2. 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 6-1-2.

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.

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

IC702

L703

L702

L704

IC700

IC701

L701

< MAIN board top view >

3-15

ONE POINT REPAIR GUIDE

D+

D-

JK500

(USB2.0)

JK501

(USB1.1)

6. 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

Please check and replace IC104 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 voltage (pin6 of IC104).

2) Check USB D1± or USB D2± from MAIN board to top board.

a. Check 2.0_D1±signals(pin2, pin3 of JK500) or 1.1_D1± signals(pin2, pin3 of JK501) to IC500.
b. If there is any trouble, check the power for IC104.

The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one.

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

D

USB D-/D+ (JK500 pin2, pin3)

< Waveform of USB D± signal >

JK500

(USB2.0)

< MAIN board top view >

JK501

(USB1.1)

3-16

ONE POINT REPAIR GUIDE

MCS_BCK: pin42

MCS_LRCK: pin43

MCS_MLCK: pin44

IC202

6. 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

Please check and replace IC202 on MAIN board.

6-4-2. How to troubleshoot (Countermeasure)

1) Check AUX_L/R signals to IC202 (pin23, 24).

2) Check if MCS_BCK, MCS_LRCK & MCS_MCLK are entered from IC500 to IC202.

3) Check if ADC_DATA is entered from IC202 to IC500.

 If no signal, check DVCC_5V & DVCC_3.3V (ADC) for IC202. If is NG, replace it a new one.

4) Check the following I2S signal flow from IC500 to IC700. (Refer to Item 6-1-2.)

 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 6-2.

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

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

DSP IC500

IC202

MCS_BCK: pin42

MCS_LRCK: pin43

MCS_MLCK: pin44

< AUX function signal fl ow >

< MAIN board top view >

3-17

IC202

ONE POINT REPAIR GUIDE

TUNER_L: pin9

TUNER_R: pin10

6. 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

Please check and replace IC202 on MAIN board.

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

1) Check if TUNER_LR is entered from pin1, pin3 of TU200 to IC202 (pin9, pin10).

 If no signals, check DVCC_3.3V for tuner power.
 Check if the tuner control signals (CLK, DAT, CE, RST, SLT) are entered from IC500 to TU200.

If it doesn’t work, replace TUNER with a new one.

2) Check if MCS_BCK, MCS_LRCK, & MCS_MCLK are entered from IC500 to IC202.

3) Check if ADC_DATA is entered from IC202 to IC500.

 If no signal, check DVCC_5V & DVCC_3.3V (ADC) for IC202. If is NG, replace it with a new one.

4) Check the following I2S audio signal flow from IC500 to IC700. (Refer to Item 6-1-2.)

 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 6-2.

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

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

DSP IC500

TUNER_L: pin9

TUNER_R: pin10

IC202

< TUNER function signal fl ow >

< MAIN board top view >

3-18

IC202

ONE POINT REPAIR GUIDE

PT_L: pin26

PT_R: pin27

6. 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

Please check and replace IC202 on MAIN board.

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

1) Check if PT_LR signals to IC202 (pin26, pin27).

2) Check if MCS_BCK, MCS_LRCK, & MCS_MCLK are entered from IC500 to IC201.

3) Check if ADC_DATA is entered from IC201 to IC500.

 If no signal, check DVCC_5V & DVCC_3.3V (ADC) for IC202. If is NG, replace it with a new one.

4) Check the following I2S audio signal flow from IC500 to IC700. (Refer to Item 6-1-2.)

 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 6-2.

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

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

DSP IC500

< PORT. IN function signal fl ow >

PT_L: pin26

PT_R: pin27

IC202

< MAIN board top view >

3-19

ONE POINT REPAIR GUIDE

IC203

ADC/MIC_DATA: pin9

MCS_BCK: pin8

MCS_LRCK: pin7

MCS_MCLK: pin6

6. 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

Please check and replace IC200, IC203 on MAIN board.

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

1) Check MIC_SIG signal to pin2 of CN200.

 If no signal, check the signals to pin7 of CN210 on the MIC board.
Check if the signal is entered from pin7 of CN210 to pin2 of CN200.

2) Check if MIC_SIG is entered from pin2 of JK210 to pin2 to IC200 (PRE AMP).

3) Check if the amplified signal comes out from pin2 of IC200.

 If no signal output, check DVCC_3.3V for IC200, replace IC200 with a new one if it has a problem.

4) Check if MCS_BCK, MCS_MLCK & MCS_LRCK is entered from IC500 to IC203.

5) Check if MIC_DATA_IN is entered from pin9 of IC203 to pin T1 of IC500.

 If no signal, check DVCC_5V & DVCC_3.3V for IC203. If it is abnormal, change replace it a new one.

6) Check the following I2S signal flow from IC203 to IC500.

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

7) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on item 6-2.

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

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

IC203

ADC/MIC_DATA: pin9

MCS_BCK: pin8

MCS_LRCK: pin7

MCS_MCLK: pin6

< MAIN board top view >

3-20

ONE POINT REPAIR GUIDE

6. 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 IC500 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 pin4, pin6 of CN501.

 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 pin4, pin6 of CN501 to pin L1,K1 to IC500 (DSP).

3) Check if MCS_BCK, MCS_LRCK & MIX_DATA IN is entered from IC500 to IC700.

 If no signal, check +3.3 VA & +1.2 VA for IC500. If it is abnormal, change replace it a new one.

4) Check the following I2S signal flow from IC500 to IC700.

 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 6-2.

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

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

B/T Module

IC500

MLC3730

MCS_LRCK
MIX_DATA0_OUT

BT_RX,
BT_TX

MCS_BCK

IC700

TPS5548DGG

PWM

TPS5631B

AMP

< Bluetooth function signal fl ow >

< MAIN board bottom view >

3-21

ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER (SMPS)

No 12 VA

YES

F901 normal?

YES

BD901 normal?

YES

TH901(TH903) normal?

YES

Is Vcc

(10 V ~ 18 V) supplied to

IC901 pin7?

YES

D933 normal?

NO

Replace F901 (Use the same fuse).

NO

Replace BD901.

NO

Replace TH901.

NO

D902 normal?

NO

Check or replace D902.

NO

Replace D933.

YES

Is there

about 2.5 V at

IC941 pin1?

YES

D951 normal?

YES

ZD932 normal?

YES

Power line of main PCB is short.

NO

Replace IC941.

NO

Replace D951.

NO

Replace ZD932.

3-22

ELECTRICAL TROUBLESHOOTING GUIDE

No PVDD

YES

F901 normal?

YES

BD901 normal? Replace BD901.

YES

TH901(TH903) normal?

YES

NO

NO

NO

Replace F901 (Use the same fuse).

Replace TH901.

(10 V ~ 18 V) supplied to

Is Vcc

IC911 pin4?

YES

Q901 normal? Replace Q901.

YES

D951 normal?

NO

NO

NO

D903 normal?

YES

Q911 base HIGH?

YES

Check or replace Q911.

Replace D951.

NO

Check or replace D903.

NO

•

Check P_CTRL HIGH signal from MCS.

• Check PC902.

YES

Is there about 2.5 V

at IC951 pin1?

YES

Power line of main PCB is short.

NO

Replace IC951.

3-23

ELECTRICAL TROUBLESHOOTING GUIDE

No LED

YES

+12 VA is normal

to the Q105 Emitter?

YES

Is LED_5V & VFD_12V is normal?

YES

Check or replace Q302.

No VFD

YES

VFD_12V is normal?

NO

NO

NO

Check SMPS circuits.

Check or replace IC101, Q105.

Check or replace Q105.

YES

DVCC_3.3V & LED_5V is normal?

YES

VFD_CLK, STB, DAT is normal?

YES

Check or replace VFD.

NO

NO

3-24

Check or replace IC103, IC101.

Check or replace R311, R312, R313.

ELECTRICAL TROUBLESHOOTING GUIDE

2. MCS PART CHECK

MCS PART CHECK

YES

Check if voltage

of CN102 pin11, 12: 12 V.

YES

Check if IC100

have 3.3 VA & 1.2 VA output.

YES

Check if IC103

have DVCC_3.3V output.

YES

X501: 32.768 kHz, X500: 24 MHz

Check the operation.

YES

NO

Refer to SMPS troubleshooting.

NO

Check and change IC100.

NO

Check and change IC103.

OK

3-25

ELECTRICAL TROUBLESHOOTING GUIDE

3. FLD DISPLAY CHECK

FLD DISPLAY CHECK

YES

CN102 pin11, 12: 12 V input

of FL+, FL- are over 1.85 V

connection and DVCC_3.3V of

Check

voltage.

YES

Check

if both end voltage

VH : over 29 V.

YES

Check CN300

VDD(CE302+).

YES

Check

IC500 -> VFD300

data communication

STB/ DATA/ CLK.

YES

FLD light on?

NO

NO

NO

NO

Refer to SMPS/MPEG

troubleshooting.

Check LED_5V(IC101)

VH : Q300, Q301, D300 ~ D303.

CN300 connection.

Check

Check data

IC500 pin F2, B3, B1.

NO

Check each pin voltage.

OK

YES

3-26

ELECTRICAL TROUBLESHOOTING GUIDE

4. PWM MODULATION CHECK

PWM MODULATION PART

CHECK

YES

Check CN102

pin11, 12: 12 V.

YES

• Check IC700(TAS5548) 3.3 V - pin9, 14, 35, 50.

• Check X700 (12.288 MHz).

YES

Check

X700(12.288 MHz)

operation.

YES

Check IC700 pin21 CLK input.

YES

Check IC500 (MLC3730)

pin U13: RESET, pin L14: SDA

pin L13: SCL output.

NO

NO

NO

Refer to

SMPS troubleshooting.

Check X700

(12.288 MHz).

YES

OK

Check line resistor output

RST: R585, SCL: R701,

SDA: R700.

NO

NO

Replace X700(12.288 MHz).

Replace R585, R700, R701.

YES

IC700(TAS5548) input data

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

Check

pin24 PWM wave.

Check

PWM modulator output

Other output

check.

YES

NO

YES

OK

Check

CD Assy communication

Pin22, 23, 24.

YESYES

Check IC700

input data.

YES

OK

Check IC700.

YES

NONO

NO

NO

Refer to

CD troubleshooting.

Check each line resistor output.

Replace IC700.

OK

OK

3-27

ELECTRICAL TROUBLESHOOTING GUIDE

5. POWER AMP PART CHECK

POWER AMP PART CHECK

YES

Check CN102 pin11, 12: 12 V,

pin3, 4, 5: 48.5 V.

YES

Check IC701, IC702

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

YES

Check IC701, IC702

pin64: AMP_12V input.

YES

Check PWM modulator input

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

YES

Check IC701, IC702

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

NO

Refer to SMPS troubleshooting.

NO

Check each line resistor output voltage.

YES

Check output line coil.

YES

OK

NO

Replace the coil.

3-28

ELECTRICAL TROUBLESHOOTING GUIDE

6. TUNER / AUX FUNCTION CHECK

FUNCTION CHECK

YES

Check

IC200 (CS5346)

pin23, 24, 26, 27

input.

YES

Check IC202

(CS5346) pin41 output

data.

YES

Check

IC500(MLC3730)

input data.

YES

IC500(MLC3730)

output data.

YES

OK

NO

NO

NO

Check JK200, TU200.

Check IC202
Pin5: DVCC_3.3V
Pin14: DVCC_5V.

YES

Check IC202

Pin5: DVCC_3.3V,

Pin6: High, Pin14: DVCC_5V.

NO

NO

Check CN102 pin11, 12: 12 V.

Check IC202

pin41: SDOUT, pin42: SLCK,

pin43: LRCK, pin44: MCLK.

YES

Replace IC202.

3-29

ELECTRICAL TROUBLESHOOTING GUIDE

7. TUNER FUNCTION CHECK

TUNER FUNCTION CHECK

YES

tuner module (TU200)

Check

operation.

YES

YES

Refer to function check.

NO

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

NO

Check tuner module data.Check IC500 Pin P7, P8, P10, P11.

3-30

ELECTRICAL TROUBLESHOOTING GUIDE

8. CD FUNCTION CHECK

CD FUNCTION

YES

Can the

disc insert?

YES

Disc reading

is ok?

YES

Is no signal at speaker?

NO

NO

Is load +,- ok?

YES

Is motor ok? (about 12 Ω)

IM driving

(Focus and tracking) is ok?

NO

NO

NO

Is motor_open/close ok?

(IC400 pin6, 7)

YES

Check IC400.

Check loading motor.

Check IC400 (Motor drive IC).

NO

Focus,

tracking, sled signal

is ok?

YES

Is the MD (CN401 pin22)

about 190 mV?

YES

Check

the signal of IC401.

YES

Check

the signal (16.9344 MHz)

at IC401 pin49.

YES

Check IC500

input/output and

control line.

YES

Refer to function check.

NO

NO

NO

Check Vcc of IC401.

Check cristal (X400).

Replace IC500.

3-31

NO

NO

Check MD (pick-up).

Replace cristal (X400).

ELECTRICAL TROUBLESHOOTING GUIDE

9. DOUBLE USB FUNCTION

USB FUNCTION

YES

Plug-in USB device.

YES

Display “NO USB”.

YES

Display “READ”.

YES

Display “NO FILE”.

YES

Check USB audio file in USB device

(MP3, WMA file is playable)

NO

Check USB_5V.

YES

Check

USB_D+, D- (R565, R567,

D503, D504).

YES

Check IC500

(pin U7, U8/ A7, A8).

NO

NO

NO

Check JK500, JK501 pin1.

Check USB jack
(JK500, JK501).

Replace IC500.

3-32

WAVEFORMS OF MAJOR CHECK POINT

XI

XO

XI

XO

1. DSP (IC500)

X

1

2

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

(R593 both side)

X

3

4

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

(MAIN DSP : R574, C547)

3

1

4

3-33

2

2. SDRAM (IC504)

5

6

7

8

Fig 2. SDRAM

8

6

5

7

3-34

3. SERVO (IC401)

XI

XO

X

9

10

11

Fig 3-1. X400

(Crystal 16.9344 MHz)

Fig 3-2. CD-16M

(IC401 pin31)

10

9

11

3-35

4. MOTOR DRIVER (IC400)

12

16

13

14

15

Fig 4-1. LO- & LO+ / MOT_OPEN & MOT_CLOSE

for Driving TRAY Motor

(IC400 pin6, 7, 9, 10)

18

19

17

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

(IC400 pin11, 12)

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

(IC400 pin17, 18)

15

13

14

12

16

17

19

18

3-36

5. ADC (IC202) 6. USB (JK500)

20

21

23

22

24

Fig 5. ADC I2S

(IC202 pin42, 43, 44)

Fig 6. USB D+/D-

(JK500 Pin2, 3)

20

21

23

24

22

3-37

7. BLUETOOTH (CN501)

BT_TX

BT_RX

BT_RST

BT_TX

BT_RX

BT_RST

BT_TX

BT_RX

BT_RST

25

26

27

B

Fig 7. BT_TX / BT_RX / BT_RST

25

26

27

3-38

3-39 3-40

MAIN

MD

FRONT

SMPS

MI C &

PORTABLE

BLUETOOTH

MODULE

23 pin

10 pin

23 pin

10 pin

10 pin

10 pin

17 pin

17 pin

8 pin

8 pin

12 pin

12 pin

FAN

2 pin

SPEAKER

LEDLED

4 pin4 pin

TUNER

AUX

WIRING DIAGRAM

3-41 3-42

BLOCK DIAGRAMS

1. SYSTEM BLOCK DIAGRAM

MLC3730

Main DSP

(+3.3V_CD, VCC1.2)

DECK

MECHANISM

M

P/UP

(VCC50)

FRONT

IR

Receiver

VFD

8BT278INK

Volume/

Key/switch

(+3.3 VA, +12 V)

AM5890

Motor Drive

USB1 USB2

SERVO

BU9546

(X4 Speed)

IC201

ADC

CS5346

PRE,AMP

DRV632

PS9870

PWM

E2PROM
CLK/DAT

DRM_WEN/CAS/

RAS/SEL/CLK/CKE

ADC_DATA

MCS_BCK/LRCK/MCLK

1 MB (8Mb)

S/Flash

RL

FL

SW1

RL_OUT_P/N

FL_OUT_P/N

RR_OUT_P/N

FR_OUT_P/N

M00_15

A00_16

SF_DI/DO

SF_CS/SCK

VFD_STB/CLK/DO/RST,

VKK,FL+/ -

RMC

MAIN VOL_A/B, MIC VOL A/B

KEY 1/2

OP_SW,CL_SW,UP_SW,DN_SW,D_SENSE

MOT_MUTE,CLOSE,OPEN

A,B,C,D,E,F,PD

LD

SPDO/SLDO

/FOD/TRD

LOAD±

±,SLED±±,

SPIN±±,TR±±,F±±

D2+/-

PWM_LRCK/BCK/DATA

DSP_O_DATA

CD_RW/MCLK/LRCK/BC

K, CD_DAT

CD_RST

For MIC

PCM1808

SW1_OUT_P/N

16 MB (128Mb)

SDRAM

4 MB (32Mb)

S/Flash

IC701

AMP IC

TAS5631B

IC702

AMP IC

TAS5631B

FAN_CTRL

D1+/-

BT_PCM_BUFFUR

BT_TX/RX

SPK LIGHTING

TLC5928

(LED Drive)

3-43 3-44

2. POWER BLOCK DIAGRAM

SMPS

+12 VA

PVDD_46V

SN1501019

[3 A]

TR Switching

12 V

TR Switching

12 V

TR Switching

12 V

VFD

FAN

TR Switching

VCC_5V

MOTO DRIVE

AM5890

+5.1 VA

DVCC_5V

USB1

USB2

MP2122

[Dual 2 A]

MAIN DSP

MLC3730

1.2 VA

3.3 VA

BD2242G

CS5346

VFD

CS5346

MIC ADC

PCM1808

MIC AMP

DRV632

MIC ADC

PCM1808

TUNER

TAS5548

VCC3.3

BT MODULE

3.3 VA

TAS5631B

TAS5631B

+12 V

+12 V

+12 V

RMC

150 mA

20 mA

VCC 3.3

163 mA

500 mA

500 mA

28 mA

40 mA

50 mA

300 mA

350 mA

11 mA

25 mA

RF IC BU9546

5mA

10 mA

EXPENDER

SPK LED

11 mA

10 mA

SPK LED

100 mA

F/S + SDRAM

105 mA

32 mA

0.7 mA

RESET IC

1mA

70 mA

25 mA

TPS562209

[3 A]

P-SENSE

46 V

46 V

+12 V

+12 V

USB_5V

BD2242G

[2.1]

351 mA

395 mA

553.7 mA

1000 mA

680 mA

70 mA

491 mA

351 mA

1842 mA

979 mA

70 mA

70 mA

300 mA

1924 mA

25 mA

54 mA

CD PICK UP

80 mA

VFD F+/-

150 mA

CIRCUIT VOLTAGE CHART

1. ICs VOLTAGE 2. CAPACITORS VOLTAGE

3-61 3-62

Location Spec (V)

-20 % +20 %

Voltage (V) Voltage (V)

IC100

DC-DC

Vin: 2.7 V ~ 6 V
Vout1: 0.6 V ~ 5.5 V
Vout2: 0.6 V ~ 5.5 V

Vin: 5.16 V
Vout1: 3.33 V
Vout2: 1.22 V

Vin: 5.16 V
Vout1: 3.33 V
Vout2: 1.22 V

IC101

DC-DC

Vin: 4.5 V ~ 17 V

Vout: -1.8 V ~ +17 V

Vin: 12.08 V

Vout: 5.06 V

Vin: 12.08 V

Vout: 5.06 V

IC102

DC-DC

Vin: 4.5 V ~ 17 V

Vout: -1.8 V ~ +17 V

Vin: 12.08 V

Vout: 5.18 V

Vin: 12.08 V

Vout: 5.18 V

IC103

Switch IC

Vin: 2.8 V ~ 5.5 V

Vout: 2.8 V ~ 5.5 V

Vin: 3.32 V

Vout: 3.29 V

Vin: 3.32 V

Vout: 3.29 V

IC104

Switch IC

Vin: 2.8 V ~ 5.5 V

Vout: 2.8 V ~ 5.5 V

Vin: 5.16 V

Vout: 5.16 V

Vin: 5.16 V

Vout: 5.16 V

IC200

Line Dri Ve

VDD: 3 V ~ 3.6 V Vin: 3.29 V Vin: 3.29 V

IC201

CP CHIP

Vin: 1.62 V ~ 5.5 V Vin: 3.32 V Vin: 3.32 V

IC202

ADC

VA: 4.75 V ~ 5.25 V

VD: 3.13 V ~ 3.47 V

VLS/ VLC: 3.13 V ~ 5.25 V

VA: 5.08 V
VD: 3.29 V

VLS/ VLC: 3.29 V

VA: 5.08 V

VD: 3.29 V

VLS/ VLC: 3.29 V

IC203

ADC

VCC: 4.5 V ~ 5.5 V
VDD: 2.7 V ~ 3.6 V

VCC: 5.08 V

VDD: 3.29 V

VCC: 5.08 V
VDD: 3.29 V

IC204

TLC5928PW

VCC: 3 V ~ 5.5 V VCC: 3.29 V VCC: 3.29 V

IC400

MOTOR IC

VCC1: 4.3 V ~ 13.2 V VCC: 5.05 V VCC: 5.05 V

IC401

RF AMP

VDD: 2.7 V ~ 3.6 V

VDD_CORE: 1.4 V ~ 1.65 V

VDD: 3.29 V

VDD_CORE: 1.48 V

VDD: 3.29 V

VDD_CORE: 1.48 V

IC500

MPEG

VDD33: 3.0 V ~ 3.6 V

VDD12: 1.08 V ~ 1.32 V

VDD30RTC: 2.75 V ~ 3.3 V

VDD33: 3.32 V
VDD12: 1.21 V

VDD30RTC: 2.97 V

VDD33: 3.32 V

VDD12: 1.21 V

VDD30RTC: 2.97 V

IC501

Serial Flash

VCC: 2.7 V ~ 3.6 V VCC: 3.32 V VCC: 3.32 V

IC502

Reset IC

VCC: 1.1 V ~ 5.5 V VCC: 3.32 V VCC: 3.32 V

IC503

Serial Flash

VCC: 2.7 V ~ 3.6 V VCC: 3.32 V VCC: 3.32 V

IC504

SDRAM

VDD/VDDQ: 3.0 V ~ 3.6 V VDD/VDDQ: 3.32 V VDD/VDDQ: 3.32 V

IC700

PWM

VCC: 3 ~ 3.6 V VCC: 3.29 V VCC: 3.29 V

IC701

AMP

P VDD: 25 V ~ 52.5 V

G VDD: 10.8 V ~ 13.2 V

VDD: 10.8 V ~ 13.2 V

P VDD: 43.8 V

G VDD: 11.81 V

VDD: 11.81 V

P VDD: 43.8 V

G VDD: 11.81 V

VDD: 11.81 V

IC702

AMP

P VDD: 25 V ~ 52.5 V

G VDD: 10.8 V ~ 13.2 V

VDD: 10.8 V ~ 13.2 V

P VDD: 43.8 V

G VDD: 11.76 V

VDD: 11.76 V

P VDD: 43.8 V

G VDD: 11.76 V

VDD: 11.76 V

IC851

LED Driver

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

Location Value Capactior (uF) Spec(V) -20 % Voltage (V) +20 % Voltage (V)

MAIN Board

C121 1000 6.3 3.32 3.32

C164 100 16 12.05 12.05

C167 220 10 1.21 1.21

C235 100 16 5.09 5.09

C246 10 16 3.32 3.32

C260 100 16 5.06 5.06

C402 100 16 5.05 5.05

C411 47 16 0.077 0.077

C418 3.3 50 1.15 1.15

C421 47 16 1.64 1.64

C447 220 16 5.05 5.05

C550 220 10 2.97 2.97

C555 220 10 5.16 5.16

C713 100 16 3.29 3.29

C731 10 16 11.94 11.94

C732 47 16 11.93 11.93

C766 680 63 43.8 43.8

C767 680 63 43.8 43.8

C770 680 63 43.8 43.8

C771 680 63 43.8 43.8

FRONT Board

C300 47 16 3.05 3.05

C310 10 50 3.29 3.29

C313 47 16 12.06 12.06

CE300 1 50 12.06 12.06

CE301 1 50 32.54 32.54

CE302 1 50 3.29 3.29

CE303 1 50 22.32 22.32

CE304 1 50 10.21 10.21

CE305 1 50 11.18 11.18

CE306 10 50 5 5

3-63 3-64

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.

3-65 3-66

2. MAIN P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

3-67 3-68

3. FRONT P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

3-69 3-70

4. JACK P.C.BOARD

(TOP VIEW)

(BOTTOM VIEW)