LG CM-4320 Schematic

MODEL: CM4320 (CM4320, CMS4320F)SERVICE MANUAL

Internal Use Only

Website http://biz.lgservice.com

Mini Hi-Fi System

SERVICE MANUAL

P/NO : AFN75734035 JANUARY, 2012

MODEL:

CAUTION

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

CM4320

(CM4320, CMS4320F)

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

SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-6

PROGRAM DOWNLOAD GUIDE ........................................................................................................... 1-7

1. AUDIO PROGRAM ................................................................................................................................... 1-7

2. CD PROGRAM ......................................................................................................................................... 1-8

3. EQ PROGRAM ......................................................................................................................................... 1-9

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 MΩ)

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 MΩ)

Resistor
(1 MΩ)

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

SERVICE INFORMATION FOR EEPROM

POWER ON

FLD no disc status or AUX status.

Remote control ‘Fwd skip’ + Front ‘STOP’

push same timing during 5 seconds.

FLD ‘OP-0….

Move to appropriate position and

make changes with remote control

‘skip, mode, play’ key.

Press STOP key

FLD ‘write ok’

DETECT NEW EEPROM
(OPTION EDIT SCREEN)

NAME

OPT0
OPT1
OPT2
OPT3
OPT4
OPT5
OPT6
OPT7
OPT8
OPT9

HEX

09
00
00
00
00
69
80
05
00
00

Remote control ‘Fwd skip’ +

Front ‘STOP’ push same timing

FLD ‘E2P CLR’

Completed

1-6

PROGRAM DOWNLOAD GUIDE

1. AUDIO PROGRAM

Download program file name must be CM4320_***.HEX

If security program (Water Wall) is activated on your PC, you must save the file to the USB storage

device and disable the security software, then download the file to your set.

Caution: When downloading the file, you should neither unplug the USB device, change to the other

function, nor power off the device. USB device must be unplugged when the downloading
process is completed.

ON VFD DISPLAY SCREEN

NO USB

↓← Insert USB device at USB function.

READ

↓

FIRMWARE

↓

WRITE 00 .. 100

↓

UPDATED

↓

POWER OFF AUTOMATICALLY ← When completed, remove USB device.

1-7

2. CD PROGRAM

Download program file name must be HE001_DATE_00.BIN

If security program (Water Wall) is activated on your PC, you must save the file to the USB storage

device and disable the security software, then download the file to your set.

Caution: When downloading the file, you should neither unplug the usb device, change to the other

function, nor power off the device. USB device must be unplugged when the downloading
process is completed.

ON VFD DISPLAY SCREEN

NO USB

↓← Insert usb device at USB function.

READ

↓

FIRMWARE

↓

WRITE 00 .. 100

↓

FINISH

↓

POWER OFF BY HAND ← When completed, remove USB device.

1-8

3. EQ PROGRAM

Download program file name must be EQ_PRG_CM4320_***.BIN

If security program (Water Wall) is activated on your PC, you must save the file to the USB storage

device and disable the security software, then download the file to your set.

Caution: When downloading the file, you should neither unplug the usb device, change to the other

function, nor power off the device. USB device must be unplugged when the downloading
process is completed.

ON VFD DISPLAY SCREEN

NO USB

↓← Insert usb device at USB function.

READ

↓

EQ DOWN

↓

FINISH

↓

POWER OFF AUTOMATICALLY ← When completed, remove USB device.

1-9

SPECIFICATIONS

• GENERAL

Power requirements Refer to main label
Power consumption Refer to main label
Dimensions (W x H x D) 202 X 300 X 297 mm
Net Weight (Approx.) 2,85 kg
Operating temperature 5 °C to 35 °C (41 °F to 95 °F)
Operating humidity 5 % to 90 %
Bus Power Supply (USB) USB DC 5 V 500 mA

• INPUTS

AUX IN 2,0 Vrms (1 kHz, 0 dB), 75 Ω, RCA jack (L, R) 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

• AMPLIFIER

Stereo mode 80 W + 80 W (4 Ω at 1 KHz, THD 10 %)
Surround mode 80 W + 80 W (4 Ω at 1 KHz, THD 10 %)

• CD

Frequency Response 100 to 20 000 Hz
Signal-to-noise ratio 75 dB
Dynamic range 80 dB

• FRONT SPEAKER

Model CMS4320F
Type 2 Way 2 Speaker
Impedance 4 Ω
Rated Input Power 80 W
Max. Input power 160 W
Net Dimensions (W x H x D) 215 X237 X304 mm
Net Weight 2,47 Kg

1-10

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

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

1. CABINET AND MAIN FRAME SECTION (CM4320) ................................................................................ 2-3

2. MECHANISM DECK SECTION (DP-12AM) ............................................................................................. 2-5

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

4. SPEAKER SECTION (CMS4320F)........................................................................................................... 2-8

2-1

MEMO

2-2

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION (CM4320)

260L

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.

464

261

464

464

264

451

262

A

A43

CABLE2

FRONT

B

464

464

A47

F

SMPS

E

276

464

464

A42

251

464

464

D

260R

259

C

265

464

D

E

A

MAIN

A46

B

C

464

A44

464

273

274

F

300

2. MECHANISM DECK SECTION (DP-12AM)

MEMO

001

A02

017

013

435

015

439

018

015B

015A

014

002

003

A01

020

016

026

A03

019

440

012

442

012

010

012A

037

442

3. PACKING ACCESSORY SECTION

801 Instruction Ass'y

808 Battery

825 FM Wire Antenna

803 Packing

804 Bag

803 Packing

824 AM Loop Antenna

900 Remote Control

802 Box

4. SPEAKER SECTION (CMS4320F)

A60

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 OPERATION OF MD ....................................................................................................................... 3-6

5. NO SOUND .......................................................................................................................................... 3-11

AUDIO ELECTRICAL TROUBLESHOOTING GUIDE .................................................................. 3-16

1. POWER (SMPS) ................................................................................................................................... 3-16

2. μ-COM PART CHECK .......................................................................................................................... 3-20

3. IC101(M24C16) CHECK ....................................................................................................................... 3-20

4. FLD DISPLAY CHECK ......................................................................................................................... 3-21

5. PWM MODULATION CHECK .............................................................................................................. 3-22

6. POWER AMP PART CHECK ............................................................................................................... 3-24

7. TUNER / AUX FUNCTION CHECK ...................................................................................................... 3-25

8. TUNER FUNCTION CHECK ................................................................................................................ 3-26

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

1. CD FUNCTION ..................................................................................................................................... 3-27

2. DOUBLE USB FUNCTION ................................................................................................................... 3-28

WAVEFORMS ............................................................................................................................................. 3-29

WIRING DIAGRAM ................................................................................................................................... 3-33

BLOCK DIAGRAMS ................................................................................................................................. 3-35

1. OVERALL BLOCK DIAGRAM .............................................................................................................. 3-35

2. SMPS BLOCK DIAGRAM..................................................................................................................... 3-37

CIRCUIT DIAGRAMS ............................................................................................................................... 3-39

1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-39

2. MAIN - DSP CIRCUIT DIAGRAM ......................................................................................................... 3-41

3. MAIN - MICOM CIRCUIT DIAGRAM .................................................................................................... 3-43

4. MAIN - AMP CIRCUIT DIAGRAM ........................................................................................................ 3-45

5. MAIN - SERVO CIRCUIT DIAGRAM ................................................................................................... 3-47

6. FRONT CIRCUIT DIAGRAM ................................................................................................................ 3-49

CIRCUIT VOLTAGE CHART ................................................................................................................. 3-51

PRINTED CIRCUIT BOARD DIAGRAMS ......................................................................................... 3-55

1. SMPS P.C.BOARD ............................................................................................................................... 3-55

2. MAIN P.C.BOARD ................................................................................................................................ 3-57

3. FRONT P.C.BOARD ............................................................................................................................. 3-59

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 & BRIDGE DIODE

1-1-1. Solution

Please check and replace F901, BD901, TH901 on SMPS board.

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

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

2) Check if the bridge diode DB901 is short-circuit by over current with a digital multi meter.

3) Check if the NTC thermistor TH901 is normal or open.

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

< F901 >

If F901 is not short-circuit,

replace it with a same

specifi cations one.

replace it with a new one.

< BD901 >

If BD901 is short-circuit,

< TH901 >

If TH901 is open,

replace it with a new one.

3-2

ONE POINT REPAIR GUIDE

NO POWER

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

1-2. D929

1-2-1. Solution

Please check and replace D929 on SMPS board.

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

1) Check the Anode-Cathod Voltage of D929 with a digital multi-meter, it is normally 0.2 ~ 0.3 V.
 If it doesn’t have any voltage, it’s destroyed. Replace it with a new one.

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

< SMPS schematic diagram >

3-3

ONE POINT REPAIR GUIDE

2. NO BOOTING WHEN POWER ON THE SET

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

2-1. FLASH MEMORY

2-1-1. Solution

Please check and replace IC102 on MAIN board.

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

1) Check 3.7 V to CN101 and CN105 in standby mode.
 If there is no 3.7 V, check the SMPS.

2) Check 5.6 V, 12 V, F+, F- and PVDD when power on the set.

- If the set doesn’t work regardless of what the KEY1 changes high to low while pressing the power button
X100 and X101 work normally but, if you can not power on the set, replace IC101 with a new one on
the MAIN board.

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

.

 XWX

OZYU^]_ro¡P

XWY

O`U_ZW[to¡P

pjXWY

rlXGO]WP

yX\Y

w~yj{ys

OyXX`P

< Signal check point >

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

3-1-1. Solution

Please check and replace DIG502 on FRONT board.

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

1) Check if VKK, FL+ and FL- are output from SMPS to VFD via the MAIN board.

2) Check if IC102 outputs VFD_D0, VFD_CLK and VFD_STB to the FRONT board.

3) Check the GR signal(pulse signal) of IC501 on the FRONT board.
Check the SG signal(pulse signal) of IC501 on the FRONT board.

 If the GR and SG signal isn’t output, replace IC501 with a new one.
 If the GR and SG signal is output, replace DIG502 with a new one.

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

nyG

znG

jGGSGGGGG
GU

  GG GGU

nyG
hGZWG

yZY^O{wZW[P

znG
hGZWG

3-5

< Waveform of GR and SG signal >

ONE POINT REPAIR GUIDE

4. NO OPERATION OF MD

When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the servo motors in MD don’t work. This step is for checking the
SPINDLE MOTOR among them.

4-1. SPINDLE MOTOR

4-1-1. Solution

Please check and replace IC301, IC302 on MAIN board.

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

1) Check the SPDO signal from pin16 of IC302.
 If no signal, check 3.3 V(RF) and X301.

2) Check the SPIN- & SPIN+ from IC301 to CN303 for driving SPINDLE motor. It is about 3.6 Vp-p.
 If no signal, check +1.8 V and +5 V for IC301.

3) Check if the FFC cable is solidly connected between CN303 and MD.

4) Check the MD.
 If the spindle motor is sort-circuit or has any trouble, it can not rotate CD discs.
Please check the function after changing another MD.

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

G
ZU]} T

zwTGjuZWZ

zwRGGjuZWZ

< Waveform of SP- & SP+

for driving SPINDLE motor >

zwT

X_GGjuZWZ

pjZWX

zwR

X^GGjuZWZ

< Signal check point >

3-6

ONE POINT REPAIR GUIDE

NO OPERATION OF MD

When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the servo motors in MD don’t work. This step is for checking the
SLED MOTOR among them.

4-2. SLED MOTOR

4-2-1. Solution

Please check and replace IC301, IC302 on MAIN board.

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

1) Check the SLDO signal from Pin15 of IC302.
 If no signal, check 3.3 V(RF) and X301.

2) Check the SLED+ & SLED- from IC301 to CN303 for driving SPINDLE motor. It is about 2.9 Vp-p.
 If no signal, check +1.8 V and +5 V for IC301.

3) Check if the FFC cable is solidly connected between CN303 and MD.

4) Check the MD.
 If the sled motor is sort-circuit or has any trouble, it can not move the pickup module.
Please check the function after changing another MD.

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

hG
YU`} T

zsTGjuZWZ

zwT G ju[W\

zsRGGjuZWZ

zwRGGju[W\

< Waveform of SLED- & SLED+

for driving SLED motor >

zsT

XYGGjuZWZ

pjZWX

zsGR

XXGGjuZWZ

< Signal check point >

3-7

ONE POINT REPAIR GUIDE

NO OPERATION OF MD

When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the servo motors in MD don’t work. This step is for checking the
TRAY OPEN / CLOSE MOTOR among them.

4-3. TRAY OPEN / CLOSE MOTOR

4-3-1. Solution

Please check and replace IC301, IC302 on MAIN board.

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

1) Check MOT_OPEN & MOT_CLOSE signals from Pin104, 105 of IC801 to IC301.
 If no signal, check +1.8 V & + 5 V to IC301.

2) Check LOAD± from IC301 to CN303 for driving the tray open / close motor. It is about 3.85 Vp-p.
 If no signal, check +5 V to IC301. If it has any trouble, replace it with a new one.

3) Check if the FFC cable is solidly connected between CN303 and MD.

4) Check the MD.
 If the tray motor is sort-circuit or has any trouble, it can not open or close the tray.
Please check the function after changing another MD.

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

hG
ZU_\} T

tv{ vwlu

tv{ jsvzl
svT GjuZWZ
svRGGjuZWZ

< Waveform

for driving TRAY open / close motor >

tv{vwlu
^G GpjZWX

tv{jsvzl
]G GpjZWX

svR

XWGGjuZWZ

pjZWX

svT

`GGjuZWZ

< Signal check point >

3-8

ONE POINT REPAIR GUIDE

NO OPERATION OF MD

When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the pickup module in MD doesn’t work. This step is for checking the
LASER TRACKING ACTUATOR.

4-4. LASER TRACKING ACTUATOR

4-4-1. Solution

Please check and replace IC301, IC302 on MAIN board.

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

The tracking actuator makes the laser beam be positioned in the center of a track on CD disc.

1) Check the TRD signal from Pin14 of IC302.
 If no signal, check 3.3 V(RF) and X301.

2) Check TR- & TR+ from IC301 to CN301 for driving the tracking actuator.
 If no signal, check +1.8 V and +5 V for IC301.

3) Check if the FFC cable is solidly connected between CN301 and MD.

4) Check the MD.
 If the pickup module has any trouble, it can not move the laser beam on the left or right side.
Please check the function after changing another MD.

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

{yTGjuZWX
{yRGGjuZWX

< Waveform of TR±

for driving TRACKING actuator >

X]G GjuZWX

{R

pjZWX

{T

X\GGjuZWX

< Signal check point >

3-9

ONE POINT REPAIR GUIDE

NO OPERATION OF MD

When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the pickup module in MD doesn’t work. This step is for checking the
LASER FOCUSING ACTUATOR.

4-5. LASER FOCUSING ACTUATOR

4-5-1. Solution

Please check and replace IC301, IC302 on MAIN board.

4-5-2. How to troubleshoot (Countermeasure)

The focusing actuator makes the laser beam keep a regular interval with the surface of a CD disc.

1) Check the FOD signal from Pin13 of IC302.
 If no signal, check 3.3 V(RF) and X301.

2) Check F- & F+ from IC301 to CN301 for driving the focusing actuator.
 If no signal, check +1.8 V and +5 V for IC301.

3) Check if the FFC cable is solidly connected between CN301 and MD.

4) Check the MD.
 If the pickup module has any trouble, it can not move the laser beam on the top or bottom side.
Please check the function after changing another MD.

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

{T

mRGGjuZWX

mTGjuZWX

< Waveform of TR±

for driving FOCUSING actuator >

X[G GjuZWX

mR

pjZWX

mT

XZGGjuZWX

< Signal check point >

3-10

ONE POINT REPAIR GUIDE

5. NO SOUND

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

5-1. IN THE CD FUNCTION

5-1-1. Solution

Please check and replace IC601, IC801 on MAIN board.

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

1) Check CD_BCLK, CD_LRCK, & CD_DOUTA signals from IC302 to IC801.
 If no signal, check if the RF & servo signals from MD is entered to IC302.
Refer to the “No operation of MD” guide on Item 4.

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

- DAC_BCK: IC801_Pin87 --> IC601_Pin4

- DAC_LRCK : IC801_Pin88 --> IC601_Pin5 (44.1 kHz)

- DAC_DATA : IC801_Pin83 --> IC601_Pin6, 9

- DAC_MCLK : IC801_Pin86 --> IC401_Pin44
 If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.

3) Check if “Digital audio AMP block” on Item 5-2 is normal.

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

{T

P/UP

DAC-BCK/LRCK/MCLK/DATA

< I2S Signal Flow >

BU9543KV

RF+ SERVO DSP

MLC9800

MCS LOGIC

PWM

PS9854

khjtjsrGOX]U`Zto¡P
khjijrGOXU[to¡ P
khjkh{h
khjsyjrGO[[UXro¡ P

< Waveform of I2S audio interface signals >

3-11

ONE POINT REPAIR GUIDE

NO SOUND

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

5-2. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS)

5-2-1. Solution

Please check and replace IC701, IC702(CM4520) on MAIN board.

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

1) Check FL±, FR± & SW± signals from IC601 to IC701 & 702 each input function.
 If no signal, check if I2S audio signals are entered to IC601.
Refer to “I2S audio signal interface” on Item 5-1.

2) Check PVDD.
 If PVDD is abnormal, check the SMPS.

3) Check +12 V for driving the gate of AMP IC.
a. All the powers are normal, but if +12 V is low, there is possible for AMP IC to be damaged.
b. Remove L707, L708, L709 and L712 one by one.
When removed a inductance, if +12 V is recovered, the IC connected to it was damaged.
c. Replace the IC with a new one.

4) Check the impedance between IC701/IC702_OUT-A/OUT-B & GND.
a. If the impedance is 0 Ω, the IC must be damaged.
b. After removing the heat sink, replace it with a new one.

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

mySG ms

pj^WX

 

pj^WY

z~

jt[\YW

< Signal check point >

3-12

ONE POINT REPAIR GUIDE

NO SOUND

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

5-3. IN THE USB FUNCTION

5-3-1. Solution

Please check and replace IC801 on MAIN board & IC502 on USB board.

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

1) Check +5VU to USB board.
 If the USB LED are turned on, the voltage is okay, if so not, check +5.6 V to pin6 of CN502.

2) Check USB D± from MAIN board to USB board.
a. Check USB_DN/DP signals to IC801(pin116, 117).
b. Check USB± signals to CN502 (pin1, 2, 4, 5).
 If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to
the IC is distorted or no signal, replace it with a new one.

3) Check if “Digital audio AMP block” on item 5-2 is normal.

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

USB

HUB IC

D+/-

IC801

MLC9800

USB

P-CTRL

DAC_DAT A

DAC_L RCK

DAC_BC K

DAC_MCLK

IC601

PS9854

PWM

< USB function signal fl ow >

AMP IC

TAS5612L

kT GXM[GGjuXWY

kRGGGY M\GjuXWY

< Waveform of USB D± signal >

3-13

ONE POINT REPAIR GUIDE

NO SOUND

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

5-4. IN THE AUX FUNCTION

5-4-1. Solution

Please check and replace IC401 on MAIN board.

5-4-2. How to troubleshoot (Countermeasure)

1) Check AUX_L/R signals to IC401 (Pin7, 8).

2) Check if DAC_BCK, DAC_LRCK, & DAC_MCLK are entered from IC801 to IC401.

3) Check if ADC_DATA is entered from IC401 to IC801.
 If no signal, check +5 V & +3.3 V(ADC) for IC401. If is NG, replace it a new one.

4) Check the following I2S signal flow from IC801 to IC602. (Refer to Item 5-1.)
 If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.

5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.
 If AMP is damaged, replace it with a new one.

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

{T

{T

AUX_ L/R

ADC_D ATADAC_MCLK

DAC_BCK

DAC_L RCK

DAC_DATA

IC401

CS5346

IC801

MLC9800

< AUX function signal fl ow >

AUX

IC601

PS9854

PWM

AMP IC

TAS5612L

kh jtjsr Gy[W]

khjsyjr Gy[W^

kh jijr Gy[W_

h kjk h{hGG Gy[W`

< Signal check point >

h|yGGy[Y[

h| sGGy[Y\

pj[WX

3-14

ONE POINT REPAIR GUIDE

NO SOUND

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

5-5. IN THE TUNER FUNCTION

5-5-1. Solution

Please check and replace IC401, TU100 on MAIN board.

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

1) Check if TUNER_LR is entered from Pin1,3 of TU100 to IC401(Pin23, 24).

 If no signals, Check +3.3 V for Tuner power.
 Check if the Tuner control signals (CLK, DAT, CE, RST, SLT) are entered from IC102 to TU100.

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

2) Check if DAC_BCK, DAC_LRCK, & DAC_MCLK are entered from IC501 to IC401.

3) Check if ADC_DATA is entered from IC401 to IC801.
 If no signal, check +5 V & +3.3 V(ADC) for IC401. If is NG, replace it with a new one.

4) Check the following I2S audio signal flow from IC801 to IC601. (Refer to Item 5-1.)
 If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.

5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.
 If AMP is damaged, replace it with a new one.

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

{T

IC401

{T

CS5346

IC801

MLC9800

kRGGGXXGGju]WY

< TUNER IN function signal fl ow >

TUNER _L/R

ADC_D ATADAC_MCLK

DAC_BCK

DAC_L RCK

DAC_DATA

DAC_MCLK

IC601

PS9854

PWM

TUNER

AMP IC

TAS5612L

h kjk h{hGG Gy[W`

khjijr Gy[W_

khjsyjr Gy[W^

kh jtjsr  Gy[W]

{| uly y Gj[ZW

{| uly s  Gj[Y`

< Signal check point >

3-15

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

1. POWER (SMPS)

No 3.7 VA

YES

F901 normal? Replace F901 (Use the same fuse).

YES

BD901 normal? Replace BD901.

YES

TH901 normal? Replace TH901.

YES

Is Vcc

(10 V ~ 18 V) supplied to

IC901 Pin7?

NO

NO

NO

NO

D904 normal?

NO

YES

D922 normal? Replace D922.

YES

Is there

about 2.5 V at

IC903 Pin1?

YES

D923 normal? Replace D923.

YES

D921 normal? Replace D921.

YES

D924 normal? Replace D924.

YES

D925 normal? Replace D925.

YES

Power line of I/O PCB is short.

NO

NO

NO

NO

NO

NO

Check or replace D904.

Replace IC903.

3-16

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

No PVDD

YES

F901 normal? Replace F901 (Use the same fuse).

YES

BD901 normal? Replace BD901.

YES

TH901 normal? Replace TH901.

NO

NO

NO

Is Vcc

(10 V ~ 18 V) supplied to

IC902 Pin7?

YES

NO

D905 normal?

YES

Q910 base "H"?

YES

•

Check P-CTRL "H" signal from μ-COM.

• Check PC902.

Check or replace Q910.

Q902 normal? Replace Q902.

YES

D929 normal? Replace D929.

YES

Is there about 2.5 V

at IC904 Pin1?

NO

NO

NO

Replace IC904.

NO

Check or replace D905.

NO

YES

Power line of main PCB is short.

3-17

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

No 12 V

YES

Is Vcc

(15 V) supplied to Q953

collector?

YES

Is the

13 V Supplied to Q953

base?

YES

Check or replace Q953.

No 5 V

YES

Is Vcc

(6 V) supplied to IC951

Pin1?

NO

NO

NO

Check or replace D921.

Check P-CTRL “H” signal

from μ-COM.

Check or replace D923.

YES

Check

IC951 Pin4 "H".

YES

Check or replace IC951.

NO

Check P-CTRL

“H”’ signal from μ-COM.

3-18

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

No VFD

YES

D925 normal?

YES

ZD951 normal?

YES

Q951 normal?

YES

Check or replace VFD.

NO

NO

NO

Check or replace D925.

Check or replace ZD951.

Check or replace Q951.

3-19

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

2. μ-COM PART CHECK

μ-COM PART

CHECK

YES

Check if

voltage of CN105 Pin10

is 3.7 VA.

YES

Check

both end voltage of

D102, D105.

YES

Check if IC102_Pin49 and

IC102_Pin36,59 are 3.5 V.

YES

X101: 32.768 kHz

X102: 9.8304 MHz

Check the operation.

YES

OK

NO

NO

Refer to

SMPS troubleshooting.

Check if output of

D105(MBR0540) is 3.7 V.

Check D102, D105.

YES

OK

NONO

Replace D102, D105.

3. IC101(M24C16) CHECK

CHECK

IC102 PIN47,48

YES

Pin47: DATA

Pin48: CLK.

YES

OK OK

NO

Check μ-COM

voltage 3.5 V.

YES

Check μ-COM.

YES

3-20

NO

Refer to μ-COM troubleshooting.

NO

Replace μ-COM.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

4. FLD DISPLAY CHECK

FLD DISPLAY CHECK

YES

Check

CN105 Pin1,2,3 input

voltage.

YES

Check if both end voltage

of FL+, FL- are over 2.9 V

VKK : over 25.6 V.

YES

Check CN501

connection and power

Pin1, 2, 3(FL+, FL-, VKK),

Pin10(3.7 VA).

YES

Check

IC501(ET16315) voltage

Pin30 VKK: -25.8 V

Pin13, 43: 3.4 V.

NO

Refer to SMPS troubleshooting.

NO

Check CN501 connection.

YES

Check each
Pin voltage.

YES

OK

NO

If voltage is not 3.4 VA, check input

and output of D502 and D503.

YES

YES

Check

IC102->IC501

data communication

Pin3->Pin9 STB
Pin2->Pin7 DATA
Pin4->Pin8 CLK

YES

FLD light on?

YES

OK

Check IC501.

YES

OK

NO

Check output data IC102 Pin2.

Check input data

IC102 Pin2,3,4.

YES

YES

Check IC102.

YES

OK

3-21

NO

Replace IC501.

NO

Replace IC102.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

5. PWM MODULATION CHECK

PWM MODULATION PART CHECK

YES

Check

CN105 Pin11 3.7 VA.

YES

• Check IC601(PS9854) VDD 3.3 V
(Pin16, 25, 30, 33, 37, 42, 50, 64, 67)

• Check VDD Core 1.2 V (Pin1, 22, 45, 60,63)

• Check X602(19.2 MHz)

YES

Check

X602(19.2 MHz)

operation.

YES

Check

IC601(PS9854)

Pin54 CLK input.

NO

SMPS troubleshooting.

NO

Refer to

Check X602
(19.2 MHz).

YES

OK

NO

Replace X602(19.2 MHz).

YES

Check

IC102(LC87Fxx)

Pin41:PWM RESET

Pin45:PWM SDA

Pin46:PWM SCL

output.

YES

A

NO

Check line

resistor output

RST: R660 / SCL: R659 /

SDA: R658.

YES

OK

3-22

NO

Replace R660,R659,R658.

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

A

YES

Check

IC601(PS9854)

input data

Pin4, 5, 6

PWM wave.

YES

Check

PWM

modulator output

FL: Pin26(-),27(+)

FR: Pin28(-),29(+)

and others.

NO

NO

Check

CD Assy communication

Pin4, 5, 6.

YES

Check

IC601(PS9854) input

data.

YES

OK

Check

IC601(PS9854).

YES

NO

NO

NO

Refer to

CD troubleshooting.

Check each line

resistor output.

Replace

IC601(PS9854).

OK

YES

OK

3-23

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

6. POWER AMP PART CHECK

POWER AMP PART CHECK

YES

Check

CN105 Pin6: +12 V

Pin14,15: 26 V.

YES

Check IC701, IC702

Pin29, 30, 31, 36, 37, 38 input voltage.

YES

Check IC701, IC702

Pin2: +12 V input.

YES

Check PWM Modulator input

IC701 Pin5, 6, 14, 15 / IC702 Pin5, 6.

YES

Check IC701, IC702

Pin27, 28, 32, 35, 39, 40.

NO

Refer to SMPS troubleshooting.

NO

Check each line resistor output voltage.

YES

Check output

line coil.

YES

OK

NO

Replace the coil.

3-24

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

7. TUNER / AUX FUNCTION CHECK

FUNCTION CHECK

YES

Check IC401

(CS5346) Pin7, 8,

23, 24 input.

YES

Check IC401

(CS5346) Pin9 output

data.

YES

Check

IC801(MLC9800)

input data.

YES

IC501(MLC9800)

output data.

NO

Check JK401,TU100.

Check IC401

Pin5: +5 V

Pin46: +3.3 V.

YES

Check IC401

Pin5: +5 V,
Pin6: High,

Pin46: 3.3 V.

NONO

NONO

Check CN105 Pin7: +5 V

Pin9, 10: +3.3 V.

Check IC401
Pin41: SDOUT,
Pin42: SLCK,
Pin43: LRCK,
Pin44: MCLK.

OK

YES

3-25

AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

8. TUNER FUNCTION CHECK

TUNER FUNCTION CHECK

YES

Check tuner

module(TU100)

operation.

YES

Check IC102 Pin21, 22, 23, 24, 25

data in/output.

YES

Refer to function check.

NO

NO

Check tuner module voltage

(Pin4: +3.3 V).

Check tuner module data.

3-26

CDP ELECTRICAL TROUBLESHOOTIHG GUIDE

1. CD FUNCTION

CD FUNCTION

YES

Can the

disc insert?

YES

Disc reading

is ok?

YES

Is no signal at spk?

YES

Check

the signal of

IC302 Pin34,35,36.

NO

Is load +,- ok?

Is Motor ok?
(about 12 Ω)

NO

OPU driving (Focus
and tracking) is ok?

NO

Check Vcc of IC302.

YES

NO

NO

NO

Is Motor_open/close

OK? (IC301 Pin10,11)

Check IC301.

Check loading motor.

tracking/sled signal

Is the PD(CN301

Pin22) about 190 mV?

YES

Focus/

is ok?

YES

NO

NO

Check IC301

(Motor drive IC).

Check IM

(pick-up).

YES

Check

the signal (16.0344 MHz)

of IC302

Pin31.

YES

Check IC801

input/output and

control line.

YES

Refer to function

check.

NO

NO

Check Cristal (X301).

Replace IC801.

NO

3-27

Replace Cristal

(X301).

CDP ELECTRICAL TROUBLESHOOTIHG GUIDE

2. 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 fi le in usb device

(MP3, WMA fi le is playable)

Check USB_5V.

YES

Check USB_D+/D-

(R501,R502).

YES

Check IC801(Pin116, 117).

NONO

Check CN502.

NO

Check usb jack (JK501/ JK502).

NO

Replace IC801.

3-28

1. SDRAM

WAVEFORMS

2. SERVO

CLK

1

DATA

2

ADDRESS

3

CS

4

IC802 Pin38

IC802 Pin53

IC802 Pin35

IC803 Pin1

5

IC801 Pin63

CD-16M

3-29

6

IC302 Pin61

TE

FE

7

IC302 Pin62

FOD

8

IC302 Pin13

RF

9

3. AUDIO PATH

10

CD_BCK

IC302 Pin63

IC801 Pin100

11

12

3-30

CD_LRCK

CD_DATA

IC801 Pin102

IC801 Pin101

13

14

DAC_MCLK

IC801 Pin86

DAC_BCK

IC801 Pin87

4. USB

15

16

USB_5V

DAC_LRCK

DAC_DATA

IC801 Pin88

IC801 Pin83

17

18

D+

D-

IC801 Pin116

IC801 Pin117

3-31

MEMO

3-32

WIRING DIAGRAM

Power

cord

15P

SPK TERMINAL

CD MD

AUX

JACK

MODULE

TUNER

SMPS PCB

CN901

CN105

CN303

CN102

23P9P

CN301

MAIN + CD PCB

CN101

CN502

USBஂ2EAஃ+FRONT PCB

3-33 3-34

8P

16P

CN501

BLOCK DIAGRAMS

s

s

s

s

1. OVERALL BLOCK DIAGRAM

DECK MECHANISM

IM

P/UP

M

SLED

SPINDLE

A,B,C,D,E,F

,Fs,T

s

LOAD

PD

LD

S3050

AUK

FDO

TDO

SLDO
SPDO

OP/CL

16.93MHZ

BU9543KV

RF+ SERVO DSP

9543-RST;

DAC-MCLK

CD_DIN_DOUT

CD_MCK/ CD_R/W

CD-BCK/ LRCK/ DOUTA

BUSY; CD-16M

SUBSYQ;

DAC-BCK/LRCK/MCLK

DAC-DATA

SPI-DO/DI/CLK/ CS

12.288MHZ

PWM

PS9854

PWM-RST

PWM-CLK

L

FL+

FL-

FR+

AMP

TAS5612L

R

FR-

PWM-DAT

SD; OTW

PDN

9.8304MHZ

EEPROM

DAT

CLK

SDRAM

W25Q80BVSSIG

FLASH

MX25LB005BMC

RESET; M

UTE

OP/CL LI MIT

DSCK#,CKE,CS0#,RAS0#

DMA[0..11],DB[0..15]

A[0.. 18], DB[0..15]

RST, WEN#,CE#

D+/-

MLC9800

MCS LOGIC

12MHZ

D+/-

USB

HUB IC

I2S CLK

CS5346

ADC(6CH)

ADC-DATA

ADC-RST

ADC-DAT

ADC-CLK

DAT, CLK, RST, CE, INT

MICOM

LC87F5M64A

32.766khz

P-SENSE

CP-RET

CP-SDA/SCL

STB

R/L

R/L

CLK

DO

VFD DRIVER

ET6315

KEY

341S2164

D+/-

AUX

TUNER

VFD

Standby LED

RMC

USB1

USB2

VOLUME LED

3-35 3-36

2. SMPS BLOCK DIAGRAM

SMPS

م

ࣧ

م

م

م

م

Snubber

Block

م

SMPS IC

Block

Main

T
R
A
N
S

م

5V LDO

12V

Regulation

Block

On/Off

م

On/Off

On/Off

FL+

FL-

Vkk

5V

5.6VA

12V

3.7VA

CN901

Noise

Filter

Block

(X-cap

Line Filter)

F

U

S
E

Y-Cap

Y-Cap

م

Snubber

م

AMP

SMPS IC

With FET

Block

Block

م

Photo coupler

On/Off

Photo coupler

Photo coupler

T
R
A
N
S

Feedback

Feedback

م

م

م

CD P.CTL

P. C TL

PVDD

3-37 3-38

CIRCUIT DIAGRAMS

1. SMPS CIRCUIT DIAGRAM

12

11

10

9

8

IMPORTANT SAFETY NOTICE

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

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

NOTE :

1. Shaded(

2. Voltages are DC-measured with a digital voltmeter

) parts are critical for safety.

Replace only with specified part number.

during Play mode.

7

6

5

4

3

2

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

1

Replace only with the type identical to fuse rating

and(or) model name described in main label.

A

CAUTION:

Danger if fuse is incorrectly replaced.

EAX64544601_SD

B C D E F G H I J K L M N O P Q R ST

SMPS

2012.01.06

3-39 3-40

2. MAIN - DSP CIRCUIT DIAGRAM

12

11

10

9

5

2

4

1

16

8

3

13

14

7

15

6

5

10

18

12

4

3

2

1

: WAVEFORM NUMBER

A

11

B C D E F G H I J K L M N O P Q R ST

17

EAX64628501_SD(#1)

DSP

2012.01.06

3-41 3-42

3. MAIN - MICOM CIRCUIT DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

1

EAX64628501_SD(#2)

A

B C D E F G H I J K L M N O P Q R ST

MICOM

2012.01.06

3-43 3-44

4. MAIN - AMP CIRCUIT DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

1

EAX64628501_SD(#3)

A

B C D E F G H I J K L M N O P Q R ST

AMP

2012.01.06

3-45 3-46

5. MAIN - SERVO CIRCUIT DIAGRAM

12

11

10

9

9 7 6

8

7

6

5

4

3

8

2

1

: WAVEFORM NUMBER

A

B C D E F G H I J K L M N O P Q R ST

EAX64628501_SD(#4)

SERVO

2012.01.06

3-47 3-48

6. FRONT CIRCUIT DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

1

A

B C D E F G H I J K L M N O P Q R ST

FRONT

EAX64628401_SD

2012.01.06

3-49 3-50

CIRCUIT VOLTAGE CHART

1. IC

Location Pin No. Specifi cation EE Mode (V) Margin Playback Mode (V) Margin

IC101 EEPROM(M24C16)

8(VCC) 1.8~5.5 3.4 2.1 3.4 2.1

IC102 MICOM (LC87F5M64A)

9(VDD2) 2.8~5.5 3.4 0.6 3.4 0.6

36(VDD3) 2.8~5.5 3.4 0.6 3.4 0.6

59(VDD1) 2.8~5.5 3.4 0.6 3.4 0.6

IC301 MOTOR IC

8(VCC1) 4.3~13.2 4.95 0.65 4.93 0.63

19(VCC2) 4.3~Vcc1 4.95 0.65 4.93 0.63

IC302 SERVER (BU9543KV)

1(AVDD1) 2.7~3.6 3.24 0.36 3.24 0.36

17(DVDD) 2.7~3.6 3.24 0.36 3.24 0.36

33(DVDD) 2.7~3.6 3.24 0.36 3.24 0.36

26(VDD_CORE) 1.35~1.65 1.56 0.09 1.56 0.09

37(VDD_CORE) 1.35~1.65 1.56 0.09 1.56 0.09

47(DVDD) 2.7~3.6 3.24 0.36 3.24 0.36

53(DVDD2) 2.7~3.6 3.24 0.36 3.24 0.36

58(AVDD2) 2.7~3.6 3.24 0.36 3.24 0.36

IC401 ADC(CS5346)

5(VLC) 3.13~5.25 4.94 0.31 4.94 0.31

14(VA) 4.75~5.25 4.94 0.31 4.94 0.31

30(VA) 4.75~5.25 4.94 0.31 4.94 0.31

36(VLS) 3.13~5.25 3.24 2.01 3.24 2.01

46(VD) 3.13~3.47 3.24 0.23 3.24 0.23

IC501 VFD (ET6315)

13(VDD) 4.5~5.5 3.5 - 3.48 -1.02

43(VDD) 4.5~5.5 3.5 - 3.48 -1.02

30(VEE) VDD-35 -25.8 9.2 -25.5 9.5

IC601 PWM (PS9854)

16(VDD_IO) 2.97~3.63 3.23 0.4 3.23 0.4

22(VDD_CORE) 1.08~1.32 1.24 0.08 1.24 0.08

25(VDD_IO) 2.97~3.63 3.22 0.41 3.22 0.41

30(VDD_IO) 2.97~3.63 3.22 0.41 3.22 0.41

33(VDD_IO) 2.97~3.63 3.22 0.41 3.22 0.41

375(VDD_IO) 2.97~3.63 3.24 0.39 3.24 0.39

42(VDD_IO) 2.97~3.63 3.24 0.39 3.24 0.39

45(VDD_CORE) 1.08~1.32 1.24 0.08 1.24 0.08

50(VDD_IO) 2.97~3.63 3.22 0.41 3.22 0.41

60(VDD_CORE) 1.08~1.32 1.24 0.08 1.24 0.08

62(VDDA) 1.08~1.32 1.24 0.08 1.24 0.08

64(VDD_VIN2) 2.20~3.30 3.22 0.08 3.22 0.08

67(VDD_VIN1) 2.20~3.30 3.22 0.08 3.22 0.08

IC701 AMP(TAS5614L)

1(GVDD_AB) 10.8~13.2 11.6 1.6 11.6 1.06

2(VDD) 10.8~13.2 11.7 1.5 11.7 1.07

Location Pin No. Specifi cation EE Mode (V) Margin Playback Mode (V) Margin

22(GVDD_CD) 10.8~13.2 11.7 1.03 11.7 1.06

29(PVDD_CD) 18~38 25.8 12.1 25.8 12.1

30(PVDD_CD) 18~38 25.8 12.1 25.8 12.1

31(PVDD_CD) 18~38 25.8 12.1 25.8 12.1

36(PVDD_AB) 18~38 25.8 12.1 25.8 12.1

37(PVDD_AB) 18~38 25.8 12.1 25.8 12.1

38(PVDD_AB) 18~38 25.8 12.1 25.8 12.1

IC801 (MLC9800)

2 (AVDD33) 2.97~3.63 3.2 0.43 3.2 0.43

13 (VDD12) 1.08~1.32 1.2 0.12 1.1 0.22

30 (IOVDD33) 2.97~3.63 3.2 0.43 3.2 0.43

47 (VDD12) 1.08~1.32 1.2 0.12 1.1 0.22

51 (IOVDD33) 2.97~3.63 3.2 0.43 3.2 0.43

84 (IOVDD33) 2.97~3.63 3.2 0.43 3.2 0.43

94 (VDD12) 1.08~1.32 1.2 0.12 1.2 0.12

113 (IOVDD33) 2.97~3.63 3.2 0.43 3.2 0.43

115(USBVDD33) 2.97~3.63 3.2 0.43 3.2 0.43

120 (PLL1VDD12) 1.08~1.32 1.2 0.12 1.2 0.12

122(PLL3VDD12) 1.08~1.32 1.2 0.12 1.2 0.12

124(PLL2VDD12) 1.08~1.32 1.2 0.12 1.2 0.12

IC802 SDRAM

1(VDD) 3.0~3.6 3.2 0.4 3.26 0.34

3(VDDQ) 3.0~3.6 3.2 0.4 3.26 0.34

9(VDDQ) 3.0~3.6 3.2 0.4 3.26 0.34

14(VDD) 3.0~3.6 3.2 0.4 3.26 0.34

27(VDD) 3.0~3.6 3.2 0.4 3.26 0.34

43(VDDQ) 3.0~3.6 3.2 0.4 3.26 0.34

49(VDDQ) 3.0~3.6 3.2 0.4 3.26 0.34

IC803 Flash

8(VDD) 2.7~3.6 3.2 0.4 3.2 0.4

3-51 3-52

2. CAPACITORS

MEMO

Location

No.

C118

C302 100uF 16V 0.22V 0V 0.22V 15.78V 3.31 0V 3.31 12.69V 3.26 0.03 3.23V 12.77V

C304 100uF 16V 0V 0V 0V 16V 1.65V 0V 1.65V 14.35V 1.64 0.03 1.61V 14.39V

C311 47uF 25V 0.22V 0.13V 0.09V 24.78V 3.17V 2.44V 0.73V 21.83V 3.1 2.37 0.73V 24.27V

C313 100nF 50V 0V 0V 0V 50V 4.97V 0V 4.97V 45.03V 4.92 0 4.92V 45.08V

C317 100uF 6.3V 0V 0V 0V 6.3V 1.57V 0V 1.57V 4.73V 1.57 0 1.57V 4.73V

C336 3.3uF 50V 0V 0V 0V 50V 1.65V 1.65V 0V 48.35V 1.65 1.64 0.01V 49.99V

C338 47uF 25V 0.22V 0V 0.22V 24.78V 3.31 0V 3.31 21.69V 3.25 0.03 3.22V 21.78V

C357 47uF 25V 0.22V 0V 0.22V 24.78V 3.31V 0V 3.31V 21.69V 3.25 0.03 3.22V 21.78V

C403 100nF 50V 0.22V 0V 0.22V 49.78V 3.32V 0V 3.32V 46.68V 3.26V 0V 3.26V 46.74V

C406 47uF 16V 0.22V 0V 0.22V 15.78V 3.31V 0V 3.31V 12.69V 3.26 0 3.26V 12.74V

C408 100uF 16V 0V 0V 0V 16V 2.49V 0V 2.49V 13.51V 0 0 0V 16V

C410 47uF 16V 0.24V 0V 0.24V 15.76V 4.97V 0V 4.97V 11.03V 3.65 0 3.65V 12.35V

C423 1uF 16V 0V 0V 0V 16V 4.02V 0V 4.02V 11.98V 1.41 0 1.41V 14.59V

C510 220uF 10V 3.5V 0V 3.5V 6.5V 3.5V 0V 3.5V 6.5V 3.4V 0V 3.4V 6.6V

C514 47uF 35V 0V

C516 100uF 16V 3.6V 0V 3.6V 12.4V 3.6V 0V 3.6V 12.4V 3.6V 0V 3.6V 12.4V

C536 100uF 16V 3.6V 0V 3.6V 12.4V 3.6V 0V 3.6V 12.4V 3.6V 0V 3.6V 12.4V

C6A1 100pF 50V 0.18V 0V 0.18V 49.82V 1.65V 0V 1.65V 48.35V 3.25 0 3.25V 46.75V

C825 47uF 25V 0.2V 0V 0.2V 24.8V 3.31V 0V 3.31V 21.69V 3.26 0 3.26V 21.74V

C827 47uF 25V 0V 0V 0V 25V 1.19V 0V 1.19V 23.81V 1.18V 0V 1.18V 23.82V

C848 47uF 25V 0V 0V 0V 25V 1.19V 0V 1.19V 23.81V 1.18V 0V 1.18V 23.82V

C849 100nF 50V 0.22V 0V 0.22V 49.78V 3.32V 0V 3.32V 46.68V 3.26V 0V 3.26V 46.74V

C8F6 47uF 25V 0V 0V 0V 25V 1.19V 0V 1.19V 23.81V 1.18V 0V 1.18V 23.82V

Value

(uF)

1000uF

Spec (+) (-) Gap Margin (+) (-) Gap Margin (+) (-) Gap Margin

6.3V 3.5V 0V 3.5V 2.8V 3.44V 0V 3.44V 2.86V 3.39V 0V 3.39V 2.91V

EEMode Play back Rec voltage

-25.9V

25.9V 9.1V 0V -25V 25V 10V 0V

-24.2V

24.2V 10.8V

3. SMPS CAPACITORS

P.OFF(STANBY) P.ON (Unloaded) CD_PLAY (USB insert)

Location Mode

3.7VA C923 330uF/16 3.70 40 3.70 200 3.70 220

5.0V(Main) C951 100uF/16 0 0 5.0 40 5.0 200

F+ - - -24 0 -19 132 -19.0 136

F- C952 - -24 0 -23.5 130 -23.5 130

VKK C926 47u/50 -26 10 -26.5 10 -26 10

12V C921 100/50 0 0 12 100 12 115

PVDD C932 1000/35 0 0 21.5 600 21.5 600

Voltage

(V)

Current

(mA)

Voltage

(V)

Current

(mA)

Voltage

(V)

Current

(mA)

3-53 3-54

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.

3-55 3-56

2. MAIN P.C.BOARD

(TOP VIEW)

(BOTTOM VIEW)

3-57 3-58

3. FRONT P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

3-59 3-60