LG CMS2520 Service Manual

MODEL: CM2520 (CM2520, CMS2520)SERVICE MANUAL

Internal Use Only

Website http://biz.lgservice.com

Micro Hi-Fi System

SERVICE MANUAL

P/NO : AFN75734072 APRIL, 2012

MODEL:

CAUTION

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

CM2520

(CM2520, CMS2520)

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 UPDATE GUIDE ................................................................................................................... 1-7

SPECIFICATIONS ....................................................................................................................................... 1-8

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 Display "NO DISC" status

Set Front ‘STOP’ Key +

Remote control ‘FWD SKIP’ Key

push same timing during 5s

DETECT NEW EEPROM

FLD ‘OPT-XXXX’

Press SET Front "Play" Key Move to

appropriate position and make changes

with Set Front ‘FWD SKIP’ Key

Press Set Front ‘STOP’ Key +

Remote control ‘FWD SKIP’ Key

FLD Display ‘E2P CLR’

NAME

OPT
OPT
OPT
OPT
OPT

HEX

00000 (FM)
00001 (FM-NO IPOD)
01000 (FM_RDS)
10100 (FM_AM)
D1000 (FM_DAB)

Press ‘POWER’ key

Completed

1-6

PROGRAM UPDATE GUIDE

HOW TO UPDATE MCS PROGRAM

(1) Change the file name to download as “(MODEL NAME)__(function)_(Version).mcs”.
ex) CM2520_XXXX_XX.mcs
(2) Copy the file to the root folder of USB storage.
(3) Put the USB into the set. Change set function to USB function.
Then the upgrade process will be started with the upgrade intormation. FLD Display "UPGRADE".
(4) If the upgrade process is complete, the set will be rebooted with “SUCCESS” message
and set auto power off.
(5) Pull out the USB Storage. Press the power key.

1-7

SPECIFICATIONS

• GENERAL

Power supply 100 - 240 V, 50 / 60 Hz or 200 - 240 V, 50 / 60Hz
Power consumption 35 W
Net Weight 2.3 kg
External dimensions (W x H x D) 230 x 125 x 243 mm
Operating conditions Temperature 5 °C to 35 °C (41 °F to 95 °F)
Operating humidity 5 % to 85 %

• TUNER

FM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHz

Amplifi er
Output Power 30 W + 30 W

• CD

Frequency Response 40 Hz to 20 kHz
Signal-to-noise ratio 70 dB
Dynamic range 55 dB

• USB

USB Version USB 2.0 or USB 1.1
Bus Power Supply DC 5 V 500 mA
iPod/iPhone DC 5 V 1 A

• SPEAKERS

Type 2 Way 2 Speaker
Impedance 6 Ω
Rated Input Power 30 W
Max. Input Power 60 W
Net Dimensions (WxHxD) 150 x 251 x 158 mm
Net Weight(1EA) 1.56 kg

• Design and specifi cations are subject to change without notice.

1-8

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

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

1. CABINET AND MAIN FRAME SECTION (CM2520) ................................................................................ 2-3

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

3. SPEAKER SECTION (CMS2520) ............................................................................................................. 2-8

2-1

MEMO

2-2

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION (CM2520)

258

259

A42

257

260

252

USB

A48

261

264

K

452

C

263

256

262

255

H

451

IPOD

254

A43

269

451

E

FRONT

A49

454

I

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.

A26

CABLE10

CABLE12

453

453

452

251

F

G

K

453

451

CABLE11

270

279

268

453

L

453

A46

J

453

SMPS

A47

A

B

B

A

MAIN

C

D

I

J

300

H

G

F

253

265

E

D

L

450

267

450

MEMOMEMO

2. PACKING ACCESSORY SECTION

801 Instruction Ass'y

808 Battery

900 Remote Control

803T Packing

804 Bag

803B Packing

802 Box

3. SPEAKER SECTION (CMS2520)

A60L

A60R

SECTION 3

ELECTRICAL

CONTENTS

ELECTRICAL TROUBLESHOOTING GUIDE .................................................................................... 3-2

1. SMPS PART ........................................................................................................................................... 3-2

2. MUTE CIRCUIT ...................................................................................................................................... 3-4

3. AMP ABNORMAL ................................................................................................................................... 3-5

4. FUNCTION MODE AUDIO ABNORMAL ................................................................................................ 3-6

5. CD PART ................................................................................................................................................ 3-7

6. CD READING CHECK............................................................................................................................ 3-8

7. USB PART .............................................................................................................................................. 3-9

8. LCD DISPLAY CHECK ......................................................................................................................... 3-10

9. IPOD PART .......................................................................................................................................... 3-11

WAVEFORMS ............................................................................................................................................. 3-12

1. CD SEARCHING WAVEFORM ............................................................................................................ 3-12

2. SPINDLE DRIVE & MOTOR WAVEFORM .......................................................................................... 3-12

3. CD PLAYING WAVEFORM .................................................................................................................. 3-13

4. CD STOP ACTION WAVEFORM ......................................................................................................... 3-14

5. CD READING WAVEFORM ................................................................................................................. 3-14

6. CD PLAYING RF WAVEFORM ............................................................................................................ 3-15

7. USB OPERATING WAVEFORM .......................................................................................................... 3-16

8. RADIO OPERATING WAVEFORM ...................................................................................................... 3-16

WIRING DIAGRAM ................................................................................................................................... 3-17

BLOCK DIAGRAM .................................................................................................................................... 3-19

CIRCUIT DIAGRAMS ............................................................................................................................... 3-21

1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-21

2. MAIN - MCU CIRCUIT DIAGRAM ........................................................................................................ 3-23

3. MAIN - DSP CIRCUIT DIAGRAM ......................................................................................................... 3-25

4. MAIN - SERVO CIRCUIT DIAGRAM ................................................................................................... 3-27

5. MAIN - AMP CIRCUIT DIAGRAM ........................................................................................................ 3-29

6. MAIN - D/A CIRCUIT DIAGRAM .......................................................................................................... 3-31

7. MAIN - TUNER CIRCUIT DIAGRAM .................................................................................................... 3-33

8. DISPLAY CIRCUIT DIAGRAM ............................................................................................................. 3-35

9. IPOD CIRCUIT DIAGRAM .................................................................................................................... 3-37

CIRCUIT VOLTAGE CHART ................................................................................................................. 3-39

PRINTED CIRCUIT BOARD DIAGRAMS ......................................................................................... 3-45

1. SMPS P.C.BOARD ............................................................................................................................... 3-45

2. MAIN P.C.BOARD ................................................................................................................................ 3-47

3. DISPLAY P.C.BOARD .......................................................................................................................... 3-49

4. USB P.C.BOARD .................................................................................................................................. 3-49

5. IPOD P.C.BOARD ................................................................................................................................ 3-50

3-1

ELECTRICAL TROUBLESHOOTING GUIDE

1. SMPS PART

+3.3 VA

YES

C912, IC903

normal?

YES

D908, C910

normal?

YES

IC909, PC902

normal?

YES

Is VCC (130V-340V)

supplied to IC901 Pin5?

NO

C925

130V-340V normal?

NO

NO

NO

YES

YES

Replace C912, IC907.

Replace D905, C916, C917.

Replace IC902, PC901.

Is VCC (9.5V-26V) supplied to IC901 Pin2?

NO

Replace C953, C926, ZD904, R907, D902.

FB904, T901 normal?

NO

BD901

normal?

YES

RT901, LF901

normal?

YES

F901

normal?

YES

There is no power cord at the power jack.

NO

NO

NO

3-2

NO

Replace FB904, T901.

Replace BD901.

Replace RT901, LF901.

Replace F901 (Use same type fuse).

ELECTRICAL TROUBLESHOOTING GUIDE

+PVDD (20.5 V)

YES

C918, C916, C902,

C905, C917 normal?

YES

D913, D914

normal?

YES

IC908, PC901

normal?

YES

Is VCC (130V-340V) supplied to IC901 Pin1?

YES

Is VCC (9.5V-26V) supplied to IC901 Pin3?

NO

NO

NO

NO

Replace C918, C916, C902, C905, C917.

Replace D913, D914.

Replace IC908, PC901.

Replace ZD903, C923, Q907, D906, C909.

3-3

ELECTRICAL TROUBLESHOOTING GUIDE

2. MUTE CIRCUIT

Mute abnormal

YES

Check output signal

IC704 Pin31.

NO

Check input signal

of FB314.

NO

Check output signal

IC107 Pin90.

NO

Mute

YES

YES

YES

Check the speakers connection.

Replace FB314.

Replace IC107.

3-4

ELECTRICAL TROUBLESHOOTING GUIDE

3. AMP ABNORMAL

AMP abnormal

YES

Check output signal

L700 ~ L703.

NO

Check input signal of
IC704 Pin6, 9 ,10,13.

NO

Check the "High" PWR

of IC704 Pin31, 23, 32.

NO

Check IC704

VCC(3.3 V) Pin21, 36.

NO

YES

YES

YES

YES

YES

Check the speakers connection.

Check L700 ~ L703, C777, C778.

NO

Replace L700 ~ L703,C777, C778.

Check the "PWM" of IC704 Pin27,28,29,30.

Check IC704 VCC of power circuit.

Check IC704 VCC1 of power circuit.Check IC704 VCC1(18.6 V) Pin8, 11.

3-5

ELECTRICAL TROUBLESHOOTING GUIDE

4. FUNCTION MODE AUDIO ABNORMAL

AUX abnormal

YES

the input signal of IC700

Check

Pin11, 4.

YES

OK

Tuner abnormal

YES

Check the input signal of IC700 Pin12, 1.

NO

Check the input signal of CON102 Pin6, 8.

NO

Check the input signal R317, R318.

NO

Check the input signal JK302 Pin2, 4.

NO

Check

the output signal of TU400 Pin5, 6 to

U401 Pin1, 2.

NO

Check VCC of TU400/ U401 Pin3?

NO

YES

YES

3-6

Check

C580,C581,R515,R516,R717,R718,C751,C753.

Check TU400/ U401

Pin4 “Tun_SCLK”, Pin5 “Tun_SDIO”, Pin7 “Tun_RST”.

YES

Normal.Check the VCC of power circuit.

ELECTRICAL TROUBLESHOOTING GUIDE

5. CD PART

Turn on CD

YES

Check

Open / Close.

YES

Check

"READING " display.

YES

Check

Reading OK.

YES

NO

NO

NO

Check IC107 Pin127.

(Open 3.3 V, Close 0 V)

Check IC107 Pin127.

(Open 3.3 V, Close 0 V)

Check connector CON801.

NO

Check the pick-up movement.

NO

Check IC801 Pin9,10 / IC107 Pin127.

If play,

check audio output.

YES

OK

NO

3-7

Check IC800 Pin31, 34, 35, 36, 37.

ELECTRICAL TROUBLESHOOTING GUIDE

6. CD READING CHECK

Connector locking check

(CON800,CON801,CON802)

YES

Does

sled motor move?

YES

Does

the laser move?

YES

Does

the laser light?

YES

NO

NO

NO

Check CN1 Pin1, 2 (SL-, SL+). Check IC800 Pin48, 49 signal.

NO NO

Defective

pick-up or IC801(Pin11,12).

Check IC800 Pin18 “CD_MCK”,

Pin19 “CD_DIN_OUT”, Pin21 “CD_BUSY”

Pin22 “CD_SUBSYQ”, Pin31 “CD_16M”

signal.

YES

Check IC800

Pin41 “DAC_MCLK”,

Pin36“CD_BCK”, Pin35“CD_LRCK”

Pin34“CD_DATA” signal.

NO YES

Check IC801 and IC800 VCC. Normal.

Check

CON802 Pin1, 2 (F+, F-).

Check

CON802 Pin19 (LD).

NO

NO

Defective

pick-up or IC800, IC801, IC107.

Defective

pick-up or Q801 circuit.

Does

the spindle motor

rotate?

YES

Is reading OK?

NO

NO

Check

CON800 Pin5, 6 (SP+, SP-).

Check

CON802 Pin3, 4(T+, T-).

3-8

NO

NO

Defective

pick-up or IC800, IC801.

Defective

pick-up or IC800, IC801.

ELECTRICAL TROUBLESHOOTING GUIDE

7. USB PART

Turn on USB

YES

"CHECKING" or "USB"

display check.

YES

Check

reading OK.

YES

If play,

check audio output.

YES

OK

NO

NO

CON102 Pin3, 2 (D+, D-) signal.

NO

Check

connector CON102.

Check

Check

U503 Pin55, 57.

NO

NO

NO

Check power supply circuit

(CON102 Pin1, USB +5 V).

NO

Check

IC107 (Pin116, 117) circuit.

Check

IC107 (Pin116, 117) circuit.

YES

Normal.

Check the output signal

of IC107 Pin87, 88, 86, 83.

3-9

ELECTRICAL TROUBLESHOOTING GUIDE

8. LCD DISPLAY CHECK

LCD abnormal

YES

Check IC301

Pin1 “LCD-CS”,Pin3 “LCD-WR”

Pin4 “LCD-DATA”

signal.

NO

YES

Check

IC301 Pin7 VCC

(3.3V).

NO

YES

Replace IC301.

NO

IC301

normal?

YES

Normal.

Check

CON301 Pin4 “VFD_CLK”,

Pin3 “VFD_DATA”, Pin2 “VFD_STB”

signal.

NO

Check CON301 flat film wire.

YES

Check

CON301 Pin9.

NO

Check SMPS part.

Check R310 ~ R312.

YES

Check chip bead FB313.

3-10

ELECTRICAL TROUBLESHOOTING GUIDE

9. IPOD PART

Turn on IPOD

YES

Check

display.

NO

Check the "High" DET

of CON200 Pin1.

NO

Check CON200.

NO

Check

the IP +5 V, CON200

Pin7, 8

YES

Check

reading OK.

YES

If play,

check audio output.

YES

OK

NO

CON200 Pin3, 4 (RX, TX) signal.

NO

CON202 Pin1, 3 signal.

Check

Check

NO

NO

YES

Check JK200.

Check

CON200, IC101(Pin5, 76, 77)

YES

Normal.

Check IC703 Pin8,14.

YES

Check IC703 Pin3(VCC).

3-11

WAVEFORMS

1. CD SEARCHING WAVEFORM

1IC800 PIN61 EE

2IC800 PIN62 TE

3IC800 PIN60 FE

2. SPINDLE DRIVE & MOTOR WAVEFORM

4IC801 PIN12 SL-

5IC801 PIN11 SL+

6IC801 PIN18 SP-

7IC801 PIN17 SP+

3-12

3. CD PLAYING WAVEFORM

IC800 PIN62 TE

IC800 PIN61 EE

IC800 PIN60 FE

IC801 PIN17 SP+

8

9

10

11

12IC801 PIN14 TD

13IC801 PIN13 FD

3-13

4. CD STOP ACTION WAVEFORM

IC801 PIN17 SP+

IC801 PIN11 SLE+

IC801 PIN16 T+

IC801 PIN14 F+

14

15

16

17

5. CD READING WAVEFORM

IC800 PIN18 MCK

IC800 PIN19 DIN

IC800 PIN20 RW

IC800 PIN21 BUSY

18

19

20

21

3-14

IC800 PIN35 LRCK

22

IC800 PIN36 BCK

IC800 PIN18 MCK

IC800 PIN34 DATA

23

24

25

6. CD PLAYING RF WAVEFORM

26IC800 PIN63 RF

3-15

7. USB OPERATING WAVEFORM

CON102 PIN3 D-

CON102 PIN1 +5V

CON102 PIN2 D+

27

28

29

8. RADIO OPERATING WAVEFORM

TU400 PIN2 DA

TU400 PIN8 RST

TU400 PIN1 SCK

30

31

32

3-16

WIRING DIAGRAM

CON700

MAIN

SMPS

WIRE, 15P

WIRE, 8P

CON802

CON103

CON104

CON800

FFC, 6P

FFC, 24P

MD

WIRE, 5P

CON801

WIRE, 3P

WIRE, 10P

CON202

CON101

IPOD

USB

CN902CN903 CON102 CON105

WIRE, 12P

3-17 3-18

CON200

WIRE, 13P

FRONT

CON301

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TDO

SLDO

SPDO

I2C

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BUSY

SUBSYQ

RESET

I2S_MCK

ANALOG
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R/L,
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R/L

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L/R

L/R

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AMP

TDA7492

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FM

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I2C

SPI_CS,CLK,DI,KO

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+12V

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+24V

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F+/F-

SMPS

POWER

CIRCUIT DIAGRAMS

1. SMPS CIRCUIT DIAGRAM

12

11

10

9

8

No Power

BD901 is Defective

No Power

IC901,ZD904,D902,PC902 are Defective

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

No Power

D907,D908,IC907 are Defective

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.

No Sound

D909,D912,Q903,Q902 are Defective

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

No Power

IC909 is Defective

VFD No Display

5

4

3

AMP No Power

D906,PC903,ZD903,IC902 are Defective

D911,D910,Q906,Q904 are Defective

AMP No Power

D913,D914,PC901,IC908 are Defective

2

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.

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

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

SMPS

2012. 02. 09

3-21 3-22

2. MAIN - MCU CIRCUIT DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

27

29

1

: WAVEFORM NUMBER

A

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

MCU

2012. 02. 09

3-23 3-24

28

3. MAIN - DSP CIRCUIT DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

1

DSP

A

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

2012. 02. 09

3-25 3-26

4. MAIN - SERVO CIRCUIT DIAGRAM

12

11

10

9

8

10

9

3

1

2
8

26

23

182419 20 21

22

7

6

5

4

3

25

14
11

2

155

76

4

17

1

: WAVEFORM NUMBER

A

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

12 13 16

SERVO

2012. 02. 09

3-27 3-28

5. MAIN - AMP CIRCUIT DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

1

AMP

A

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

2012. 02. 09

3-29 3-30

6. MAIN - D/A CIRCUIT DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

1

D/A

A

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

2012. 02. 09

3-31 3-32

7. MAIN - TUNER CIRCUIT DIAGRAM

12

11

10

9

8

7

6

31

5

4

3

32

2

30

1

: WAVEFORM NUMBER

A

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

TUNER

2012. 02. 09

3-33 3-34

8. DISPLAY CIRCUIT DIAGRAM

12

VFD301 9-BT-200-NK

1
2

11

4

56789

10

23

242526

2728292230

1112131415161718192021

3

C301

104PF

31
32

10

P19

P18

P17

P16

P2

P1

R398

10K
R0805

C309

101P

FGND

G9G8G7G6G5

C305

0.1uF

C0805

P9P8P7P6P5P4P3

P10

VEE

FGND

CLK

STB_

FGND

IC3.3V

TAD

G4G3G2

G1

TO:MAIN PCB

FB303
300RH

FB304

FB312

FB310

FB311 300RH

FB309

FB308

FB314

FB305

FB307

FB313

300RH

300RH

300RH

300RH

300RH

300RH

300RH

300RH

F+

F-

VEE

FGND

FGND

SSTB

CDAT

CCLK

IR1

AD2_1

AD1_1

FRONT_3V3

+

C313

100U/10V

IC3.3V

IC3.3V

CCLK

SSTB

ADC

R400

10K

C308

101P

R0805

FGND

C307

101P

FGND

R399

10K
R0805

R312

R0805
100R

R311

100R
R0805

R310

T

100R

R0805

GND

1

9

8

7

6

16789011121234513

2

VFD_CS

3

4

5

6

7

8

9

F+

13

F-

12

-24V

11

GND

10

VFD_DATA

VFD_WR

IR

AD2

AD1

FRONT_3V3A

DISPLAY_3.3V

300RH

CON301

5

P12

P11

C320

0.1uF
C0805

P13

C303'

0.1uF
C0805

FGND

P14

FGND

P15

R319

R0805

IC3.3V

C319

0.1uF

82K

C315'

0.1uF

IC301

1
2
3
4
5
6
7
8
9

P1

10
11

P3

12

P4

13

VEE

47

48

49

50

51

52

VEE

CLK

VDD

GND

GR15

DIN
STB
DOUT
K1
K2
OSC
GND
VDD
S1/KS1
S2/KS2
S3/KS3
S4/KS4

GR16

PT6324

S7/KS717S8/KS818S9/KS919S10/KS1020S11/KS1121S12/KS1222S13/KS1323S14/KS1424S15/KS1525S16/KS1626S17

GR14

14S515S616

FB301 300RH

R328

1R 0.5W

R1206

FB302 300RH

G9

43

44

45

46

GR10

GR11

GR12

GR13

C316

G8

G7

40

GR741GR842GR9

GR6
GR5
GR4
GR3

GR2
GR1

S24
S23
S22
S21
S20
S19
S18

F-

F+

G6

39

G5

38

G4

37

G3

36

G2

35

G1

34
33
32
31
30
29

P19

28
27

P18

P8

P6

P9

P5

P7

P10

P11

P12

P13

P14

P16P2P15

P17

4

R306

GND

R0805

100R

3

IR

GND

5

IR1

C311

3

102 NC

2

R304

GND

2

1

4

VCC

GND

IR301

GND

REM

R0805

10K

R313

C340

47uF/10V

GND

R0805

10R

C310

0.1uF

FRONT_3V3

AD1_1

AD2_1

S300

POWER

FGND

910R(1%)

0V

0.21V

VOL- VOL+

FGND

R314 1K1(1%)

0.43V

S303

R316 1K3(1%) R330

S305

OPEN

R321 1K8(1%)R396

6.0

S307

NEXT/UP BACK/DN

KEY BOARD

R324 2K(1%)

S309

R327 3K3(1%)

V62.1V2

S311S301

STOP

KEY

5K1(1%)

1.51V0.81V 1.02V

S313

PLAY/PAUSE FUNCTION_

S315

1

DISPLAY

A

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

2012. 02. 09

3-35 3-36

9. IPOD CIRCUIT DIAGRAM

12

11

10

GND12GND23TPA+

1

9

8

7

6

R201=75K,CHARGE I=500mA

R202=43.2K,CHARGE I=1A

5

R200 49.9K

4

3

TPA-6USBD-7TPB+8+5V9TPB-10ID11POW/IN12POW.IN133V3OUT

USBD+

4

5

C200

104P

43.2K

R201 75K

R202

R203 49.9K

FB206 300RH

191K

R204

1K

R205

3

Q200

2

1

2SK3019

Q201

R207 47K

R208

3

1

2SK3019

31

GND32GND33GND

UGND16VGND

14

15

1k

ACC-POWER

549K

2

47K

R209

34

GND

JK200

IPOD_JACK_DIP

17

R218

R211 10K

R210

10K

SET-GND

IPRX19IPTX20ACCDET21YOUT22COUT23VIDEO24SENSER25LIN26RIN27LOUT28ROUT29AGND30DET

18

CM2520(NC)
DM2520(ADD)

FB201

FB200

1K 100M

1K 100M

C201100P

R219 10K

1K

R212

VIDEO

2

47K

2SK3019

R214

FB203

1K 100M

R215

10K

R216

R217

10K

3

Q203

1

2SK3019

R213 1K

Q202

3

2

1

47K

FB202

1K 100M

FB204

300RH

GND

CM2520(NC)
DM2520(ADD)

C202

100P

ACC-POWER

VIDEO

J1

J2

J3

J4

C203

100P

IP-DET

A_ACCDET

IP-TX

IP-RX

D_ACCCET

IPOD+5V

IPOD+5V

13

12

11

10

MARK

MARK

MARK

MARK

9

8

7

6

5

4

3

2

1

1

5432

13543221110198761

FFC11PIN-1.0_SMD

CON202

CON200

2

1

iphone board

A

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

SET-GND

IPOD

2012. 02. 09

3-37 3-38

CIRCUIT VOLTAGE CHART

1. ICs 2. TRs

Location Pin No. Spec. 80 Volt 288 Volt

Input Voltage: 80 V / 60 Hz, 288 V / 50 Hz

IC101 S3F84I9 (MCU IC)

5(VCC) 2.7~3.6V 3.265 3.265

23(VCC) 2.7~5.5V 3.265 3.265

IC101 CM1117 (Regulator IC)

3(VIN) 4.3~12V 7.31 7.28

2(VOUT) 4~0.15V 3.94 3.94

IC104 MFI341S2500 (IP)

5(VCC) 2.7~3.6V 3.265 3.265

IC105 LM39102D (Regulator IC)

2(VIN) 0.3~22V 7.25 7.23

3(VOUT) 0.3~22.3V 4.97 4.97

IC107 MLC9800 LQFP-128 (Audio decode IC)

2(AVDD) 3.0~3.6V 3.265 3.265

30(VDD) 3.0~3.6V 3.265 3.265

51(VDD) 3.0~3.6V 3.265 3.265

84(VDD) 3.0~3.6V 3.265 3.265

113(VDD) 3.0~3.6V 3.265 3.265

115(VDD) 3.0~3.6V 3.265 3.265

13(VDD) 1.2±0.2V 1.21 1.21

47(VDD) 1.2±0.1V 1.21 1.21

94(VDD) 1.2±0.1V 1.21 1.21

120(VDD) 1.2±0.1V 1.21 1.21

122(VDD) 1.2±0.1V 1.21 1.21

124(VDD) 1.2±0.1V 1.21 1.21

IC108 EON 8M FLASH SOP-8 (FLASH)

8(VCC) 2.7~3.6V 3.265 3.265

IC109 IC42S16100E (SDROM)

1(VDD) 3.0~3.6V 3.265 3.265

7(VDDQ) 3.0~3.6V 3.265 3.265

13(VDDQ) 3.0~3.6V 3.265 3.265

25(VDD) 3.0~3.6V 3.265 3.265

38(VDDQ) 3.0~3.6V 3.265 3.265

44(VDDQ) 3.0~3.6V 3.265 3.265

IC111 XC6206-1.2V (Regulator IC)

2(Vin) 2.5~+6V 3.286 3.286

3(Vout) 1.2±0.024V 1.211 1.212

IC301 PT6324 (DISPLAY DRIVE IC)

8(VDD) 2.7~5.2V 3.323 3.323

IC501 MC4580 (HEADPHONE AMP)

4(VCC-) ±22V -11.55 -11.68

8(VCC+) ±22V 11.78 11.81

IC700 BU4052 (SOUND CONTROL)

7(VCC-) 3~18V -5.9 -5.84

16(VCC+) -3~-18V 6.04 6.05

Location Pin No. Spec. 80 Volt 288 Volt

Input Voltage: 80 V / 60 Hz, 288 V / 50 Hz

IC701 MC4580 (SOUND AMP)

4(VCC-) ±22V -11.55 -11.68

8(VCC+) ±22V 11.78 11.81

U702 AK5358(ADC IC)

6(AVDD) 4.5~5.5V 4.95 4.95

7(DVDD) 2.7~3.6V 3.14 3.14

IC703 LM324A SOP-14P

4(VCC) 2.7~12V 8.265 8.265

IC704 ST339BW (AMPLIFIER IC)

11(VCC1) 5~26V 20.97 20.92

8(VCC2) 5~26V 20.95 20.92

21(VDD) 0.3~4V 3.13 3.12

36(VDD) 0.3~4V 3.13 3.13

TU401 YST990-A3U0 (FM/AM MODE) (Tuner Module )

1(VDD) 5V+/-0.5 5.184 5.184

U400 YST995-H2U0 (FM MODE) (Tuner Module )

1(VDD) 3V+/-0.3 3.3 3.3

U400 YST995-H4C0 (FM/RDS MODE) (Tuner Module )

1(VDD) 3V+/-0.3 3.3 3.3

U512 V809R (RESET IC)

2(RESET) 2.7~3.6V 3.265 3.265

3(VCC) 2.7~5.5V 3.265 3.265

U800 BU9543KV (QFP-64P) (RF AMP+SSP+DSP)

1(AVDD) 2.7~3.6V 3.261 3.261

17(DVDD) 2.7~3.6V 3.261 3.261

33(DVDD) 2.7~3.6V 3.261 3.261

47(DVDD) 2.7~3.6V 3.261 3.261

53(DVDD) 2.7~3.6V 3.261 3.261

58(DVDD) 2.7~3.6V 3.26 3.26

26(VDD) 1.6~2.0V 1.82 1.82

37(VDD) 1.6~2.0V 1.82 1.82

U801 CD5888 (MOTOR DRIVE IC)

21(VCC) 4.5~9V 5.2 5.2

22(VCC) 4.5~9V 5.2 5.2

Pin No. Spec. Voltage

Q902 S8550 PNP

1(E) VCBO≤40V 10.62/10.62

2(B) VCEO≤25V 11.18/11.17

3(C) VEBO≤6V 0.53/0.52

Q903 SPN3414 NPN

1(E) VDSO≤20V 0.12/0.12

2(B) VGSO≤20V 0.6/0.6

3(C) VGDO≤4.5V 0.08/0.08

Q904 A1267 PNP

1(E) VCBO≥-50V 0.71/0.71

2(B) VCEO≥-50V 0.72/0.72

3(C) VEBO≥-5V 0.01/0.01

Q906 C3205 NPN

1(E) VCBO≤30V 0.66/0.66

2(B) VCEO≤30V 0.70/0.70

3(C) VEBO≤5V 0.04/0.04

Q907 3906 PNP

1(E) VCBO≤40V 0.766/0.765

2(B) VCEO≤40V 0.632/0.632

3(C) VEBO≤5V 0.74/0.74

IC908 WL431(regulator IC)

1(E) REF:2.44~2.55V 2.45/2.45

2(B) GND:0V 0/0

3(C) VZ:-0~37V 20.72/20.68

IC909 WL431(regulator IC)

1 REF:2.44~2.55V 2.45/2.45

2 GND:0V 0/0

3 VZ:-0~37V 4.3/4.3

3-39 3-40

3. DIODES

5. CONNECTORS

NO Type

Positive (+) Negative (-) Positive (+) Negative (-)

80 V / 60 Hz 288 V / 50 Hz

D901 UF4007 117.6V 198.2V 390.4V 409.1V

D902 FR107 0V 12.41V 0V 12.26V

D905 UF4007 118.3V 192.4V 387.8V 494.5V

D906 RF107 0V 12.73 0V 12.51V

D907 FR107 0V 7.01V 0V 6.9V

D908 SR360 0V 7.29V 0V 7.18V

D909 UF5404 0V 14.4V 0V 14.05V

D910 FR107 0V 3.23V 0V 3.3V

D911 RF107 -22.17V 0V -22.38V 0V

D912 RF107 12.09V 0V -11.98V 0V

D913 UF5404 0V 18.6V 0V 18.6V

D914 UF5404 0V 18.6V 0V 18.6V

D915 SR360 0V 7.45V 0V 4.25V

ZD901 15V 0.58V 0V 0.68V 0V

ZD902 3V -2.96V 0V -2.96V 0V

ZD903 18V 0V 12.82V 0V 12.81V

ZD905 15V 0.58V 0V 0.48V 0V

4. CAPACITORS

Location No. Value (uF) Voltage_Spec. Positive (+)

Input Voltage: 288 V /50 Hz

MPEG

C171 1000uF 10V 3.247 V

C174 100uF 16V 4.97 V

C182 47uF 25V 1.18 V

C183 100uF 16V 3.26 V

C184 100uF 16V 4.96 V

C185 100uF 16V 3.26 V

C186 100uF 16V 3.26 V

C187 100uF 16V 7.25 V

C188 470uF 10V 3.94 V

C189 470uF 10V 3.23 V

C190 100uF 16V 3.15 V

C197 470uF 10V 3.27 V

C1A4 47uF 25V 4.07 V

C1B10 100uF 16V 4.89 V

C1B5 100uF 16V 4.97 V

C1C1 100uF 16V 12.03 V

C1C2 100uF 16V -11.77 V

C405 470uF 10V 4.96 V

C439 100uF 16V 3.15 V

C708 470uF 35V 20.94 V

C755 10uF 50V 6.04 V

SPEC

≤1000V(Reverse)

≤1000V(Reverse)

≤1000V(Reverse)

≤1000V(Reverse)

≤1000V(Reverse)

≤60V(Reverse)

≤200V(Reverse)

≤1000V(Reverse)

≤1000V(Reverse)

≤1000V(Reverse)

≤200V(Reverse)

≤200V(Reverse)

≤60V(Reverse)

≤15V/0.5W

≤3V/0.5W

≤18V/0.5W

≤15V/0.5W

Location No. Value (uF) Voltage_Spec. Positive (+)

Input Voltage: 288 V /50 Hz

C756 10uF 50V -5.98 V

C757 47uF 25V -11.44 V

C758 47uF 25V 11.81 V

C759 4.7uF 50V 2.47 V

C760 4.7uF 50V 2.47 V

C761 10uF 50V 2.46 V

C762 47uF 25V 4.95 V

C763 47uF 25V 3.13 V

C782 100uF 16V 5.13 V

C783 100uF 16V 7.24 V

C807 100uF 16V 3.31 V

C808 100uF 16V 4.91 V

C829 220uF 16V 1.66 V

C830 220uF 16V 4.92 V

C834 3.3uF 50V 1.67 V

C835 100uF 16V 3.32 V

C836 100uF 16V 3.31 V

C837 47uF 25V 3.26 V

C838 100uF 16V 1.94 V

C839 220uF 16V 4.93 V

EC115 100uF 16V 12.03 V

SMPS

C909 47uF 50V 12.69 V

C910 1000uF 16V 7.25 V

C911 470uF 16V 7.58 V

C912 470uF 16V 4.99 V

C913 1000uF 25V 14.34 V

C914 470uF 16V 12.06 V

C915 1000uF 16V 4.25 V

C916 1000uF 35V 18.6 V

C918 1000uF 35V 18.6 V

C921 470uF 16V 3.28 V

C923 22uF 25V 10.2 V

C925 100uF 450V 399.3 V

C926 10uF 50V 12.57 V

C927 100uF 50V -21.54 V

C929 470uF 25V 3.28 V

C930 2.2uF 50V 6.95 V

C932 47uF 50V 15.52 V

Connector No. Pin NO. SPEC Value (V)

Input Voltage: 240 V / 50 Hz

SMPS

1PIN VFDPWR 0-3.3V 3.19

2PIN MAINPWR 0-3.3V 3.23

3PIN POWER-SENS 0-5V 3

CON902

4PIN +10.5V 6.5±3V 7.22

5PIN GND 0V 0

6PIN VEE -24V±3V -22.16

7PIN F- 0V 0

8PIN F+ 3.2V 3.25

1PIN PVDD 20±0.5V 18.6

2PIN PVDD 20±0.5V 18.6

3PIN PGND 0V 0

4PIN PGND 0V 0

5PIN +3.3V 3.3±0.15V 3.27

6PIN +3.3V 3.3±0.15V 3.27

7PIN +5V 5±0.15V 4.99

CON903

8PIN +5V 5±0.15V 4.99

9PIN GND 0V 0

10PIN +5V 5±0.15V 4.99

11PIN GND 0V 0

12PIN +12V 12±0.5V 12.04

13PIN -12V -12±4V -11.69

14PIN +6.5V 6.5+3/-1V 7.25

15PIN GND 0V 0

3-41 3-42

CONNECTORS

Connector No. Pin NO. SPEC Value (V)

Input Voltage: 240 V / 50 Hz

Main

1PIN IP-DET 0-3.3V 3.25

2PIN A_ACC 0-3.3V 0.01

3PIN IP-TX. 0-3.3V 0

4PIN IP-RX. 0-3.3V 0

5PIN D_ACC 0-3.3V 0

6PIN ACC_P 0-3.3V 0

CON101

CON102

CON103

7PIN GND 0V 0

8PIN +5V 5±0.15V 4.97

9PIN +5V 5±0.15V 4.97

10PIN ip_D- 0-3.3V 2.65

11PIN ip_D+ 0-3.3V 1.97

12PIN GND 0V 0

13PIN GND 0V 0

1PIN USB+5V 5±0.15V 4.97

2PIN DM+ 0-3.3V 0.01

3PIN DM- 0-3.3V 0.01

4PIN GND 0V 0

5PIN PORT_L 0-1.2V 1.06

6PIN GND 0V 0

7PIN PORT_R 0-1.2V 0.01

8PIN PORT_SENS 0-5V 3.19

1PIN PVDD 20±0.5V 18.6

2PIN PVDD 20±0.5V 18.6

3PIN PGND 0V 0

4PIN PGND 0V 0

5PIN +3.3V 3.3±0.15V 3.27

6PIN +3.3V 3.3±0.15V 3.27

7PIN +5V 5±0.15V 4.98

8PIN +5V 5±0.15V 4.98

9PIN GND 0V 0

10PIN +5V 5±0.15V 4.98

11PIN GND 0V 0

12PIN +12V 12±0.5V 12.04

13PIN -12V -12±4V -11.69

14PIN +6.5V 6.5+3/-1V 7.24

15PIN GND 0V 0

Connector No. Pin NO. SPEC Value (V)

Input Voltage: 240 V / 50 Hz

1PIN VFDPWR 0-3.3V 3.09

2PIN MAINPWR 0-3.3V 3.23

3PIN POWER-SENS 0-5V 3

CON104

CON105

CON502

CON700

CON800

CON801

4PIN +5V 5±0.15V 7.22

5PIN GND 0V 0

6PIN VEE -24V -22.16

7PIN F- 0V 0

8PIN F+ 3.2±0.5V 3.24

1PIN GND 0V 0

2PIN VFD_CS 0-3.3V 3.25

3PIN VFD_DA 0-3.3V 3.25

4PIN VFD_WR 0-3.3V 3.25

5PIN REM_IR 0-3.3V 3.15

6PIN AD2 0-3.3V 3.24

7PIN POWER_KEY 0-3.3V 3.25

8PIN FRONT_3V3 3.3±0.15V 3.14

9PIN DISP_3.3V 3.3±0.15V 3.14

10PIN GND 0V 0

11PIN VEE -24V±3V -22.14

12PIN VFD- 0V 0

13PIN VFD+ 3.2±0.5V 3.16

1PIN FAN+12V 6.5-12V 12.04

2PIN FAN-GND 0V 0

1PIN IPOD-L 0-1V 0.03

2PIN GND 0V 0

3PIN IPOD-R 0-1V 0.03

1PIN SP- 0-3V 2.15

2PIN SP+ 0-3V 2.65

3PIN NC 0V 0

4PIN NC 0V 0

5PIN SL- 0-3V 2.28

6PIN SL+ 0-5V 2.41

1PIN LOAD+ 0-5V 2.61

2PIN LOAD- 0-5V 2.62

3PIN CL-SW 0-3V 2.5

4PIN GND 0V 0

5PIN OP-SW 0-3V 0.01

3-43 3-44

PRINTED CIRCUIT BOARD DIAGRAMS

1. SMPS P.C.BOARD

3-45 3-46

2. MAIN P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

3-47 3-48

3. DISPLAY P.C.BOARD

5. IPOD P.C.BOARD

(TOP VIEW)

4. USB P.C.BOARD

(BOTTOM VIEW)

3-49 3-50

MEMO MEMO

3-51 3-52