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MODEL: MCV1306 (MCV1306, MCS1306F/S/W)SERVICE MANUAL

Internal Use Only

Website http://biz.lgservice.com

Mini Hi-Fi System

SERVICE MANUAL

P/NO : AFN74972291 AUGUST, 2011

MODEL:

CAUTION

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

MCV1306

(MCV1306, MCS1306F/S/W)

Page 2

CONTENTS

SECTION 1 ........ GENERAL

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

SECTION 3 ........ ELECTRICAL

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

1-1

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SECTION 1

SUMMARY

CONTENTS

SERVICING PRECAUTIONS ................................................................................................................... 1-3

ESD PRECAUTIONS .................................................................................................................................. 1-5

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

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

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

1-2

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SERVICING PRECAUTIONS

NOTES REGARDING HANDLING OF THE PICK-UP

1. Notes for transport and storage

1) The pick-up should always be left in its conductive bag until immediately prior to use.

2) The pick-up should never be subjected to external pressure or impact.

Storage in conductive bag

Drop impact

2. Repair notes

1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.

2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board.

3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched.

4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.

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

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

Pressure

Magnet

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

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NOTES REGARDING COMPACT DISC PLAYER REPAIRS

1. Preparations

1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care.

2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnetism is present, or where there is excessive dust.

2. Notes for repair

1) Before replacing a component part, first disconnect the power supply lead wire from the unit

2) All equipment, measuring instruments and tools must be grounded.

3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.)

4) To prevent AC leakage, the metal part of the soldering iron should be grounded.

5) Workers should be grounded by an armband (1 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)

Conductive Sheet

1-4

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ESD PRECAUTIONS

Electrostatically Sensitive Devices (ESD)

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can

generate electrical charges sufficient to damage ESD devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices.

6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials).

7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed.

CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER

SAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

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

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

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SERVICE INFORMATION FOR EEPROM

POWER ON

FLD no disc status

Remote control ‘ ’ + Front ‘STOP’

push same timing during 5s

FLD ‘OP-0….

Move to appropriate position and

make changes with remote control.

( , , /■ , REPEAT )

Press STOP key

FLD ‘write ok’

DETECT NEW EEPROM (OPTION EDIT SCREEN)

NAME

OP0 OP1 OP2 OP3 OP4 OP5 OP6 OP7 OP8 OP9

HEX

05 00 00 00 00 69 90 07

Remote control ‘ ’ +

Front ‘STOP’ push same timing

FLD ‘E2P CLR’

Completed

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PROGRAM DOWNLOAD GUIDE

1. AUDIO PROGRAM

Download program file name must be MCV1306_YYMMDDX.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.

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2. CD PROGRAM

Download program file name must be HD003_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

↓

FINISH

↓

UPDATED

↓

POWER OFF AUTOMATICALLY

←

When completed, remove usb device

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3. BEAT BOX PROGRAM

Download program file name must be BEAT_BIN_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

↓

FINISH

↓

UPDATED

↓

POWER OFF AUTOMATICALLY

←

When completed, remove usb device

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SPECIFICATIONS

• GENERAL

Power requirements Refer to main label Power consumption Refer to main label Dimensions (W x H x D) 285 x 388 x 351 mm without foot Net Weight (Approx.) 7.2 kg Operating temperature 5 °C to 35 °C (41 °F to 95 °F) Operating humidity 5 % to 90 % Bus Power Supply USB DC 5 V 500 mA iPod DC 5 V 1 A

• INPUTS/ OUTPUTS

ANALOG AUDIO IN 1.2 Vrms (1 kHz), 600 Ω, RCA jack (L, R) x 1 PORT. IN 0.5 Vrms (3.5 mm stereo jack) ANALOG AUDIO OUT 800 mVrms (1 kHz), 600 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

• AMPLIFI ER

Stereo mode 270 W + 270 W (4 Ω at 1 kHz) Surround mode Front 270 W + 270 W (4 Ω at 1 kHz, THD 10 %) Rear 150 W + 150 W (8 Ω at 1 kHz, THD 10 %) Subwoofer1 270 W (4 Ω at 60 Hz, THD 10 %) Subwoofer2 270 W (4 Ω at 60 Hz, THD 10 %)

• CD

Frequency Response 40 to 20 000 Hz Signal-to-noise ratio 75 dB Dynamic range 80 dB

• SPEAKERS

Front speaker

Type 2 Way 2 speaker Impedance 4 Ω Rated Input Power 270 W Max. Input power 540 W Net Dimensions (W x H x D) 263 x 460 x 358 mm Net Weight 7.3 kg

Rear speaker

Type 2 Way 2 speaker Impedance 8 Ω Rated Input Power 150 W Max. Input power 300 W Net Dimensions (W x H x D) 198 x 338 x 258 mm Net Weight 3.1 kg

Passive subwoofer 1/ 2

Type 1 Way 1 speaker Impedance 4 Ω Rated Input Power 270 W Max. Input power 540 W Net Dimensions (W x H x D) 347 x 457 x 355 mm Net Weight 8.4 kg

• Design and specifications are subject to change without notice.

1-10

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SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803) ........................ 2-2

1. ORDER OF DISASSEMBLY FOR MECHANISM DECK .......................................................................... 2-2

2. ORDER OF ASSEMBLY FOR MECHANISM DECK ................................................................................ 2-6

EXPLODED VIEWS ................................................................................................................................... 2-11

1. CABINET AND MAIN FRAME SECTION (MCV1306) ............................................................................ 2-11

2. MECHANISM DECK SECTION (CDM-H1803) ....................................................................................... 2-13

3. PACKING ACCESSORY SECTION ....................................................................................................... 2-15

4. SPEAKER SECTION .............................................................................................................................. 2-16

2-1

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DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803)

1. ORDER OF DISASSEMBLY FOR MECHANISM DECK

1) Disassemble the Cover Guide Disc.

Figure 1

2) Disassemble the Loading FFC from the Main PCB Assy. Turn the Gear in OPEN direction as shown in Figure 2 to take out the Tray Loading Assy in 3 direction.

Figure 2

3) Pull up the Holder 1 to completely disassemble the Tray Loading Assy from the Base Main Assy.

Figure 3

2-2

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ORDER OF DISASSEMBLY FOR MECHANISM DECK

4) Loosen the screw to pull up and disassemble the

Figure 4

Tray Disc.

5) Loosen the screw to pull up and disassemble the Gear Tray CAM.

Figure 5

Figure 6

6) Disassemble the Gear Tray, Tray Motor Assy and Loading PCB Assy from the Tray Loading.

2-3

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ORDER OF DISASSEMBLY FOR MECHANISM DECK

Figure 7

Disassemble the Harness Cable from the Base Main.

Disassemble the Base Sled Assy from the Base Main by referring to Figure.

Figure 8

8) Disassemble each gear part, Clamp Disc, Clamp

Magnet and Cover Plate from the Base Main. Disassemble the Loading Motor Assy by being careful of the hook on the surface of the Base Main.

Figure 9

9) Push the Guide UD in direction 1 to disassemble it from the Base Main.

2-4

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ORDER OF DISASSEMBLY FOR MECHANISM DECK

10) Use a solder to remove the Motor Jump Wire from the Main PCB Assy and then disassemble the FFC Cable. Loosen the screw to disassemble the Main PCB Assy.

Figure 10

2-5

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2. ORDER OF ASSEMBLY FOR MECHANISM DECK

1) Assemble the Loading Motor Assy to the Base Main. (When assembling the Motor Assy, use the hook on the surface of the Base Main to preassemble, and then tighten the screws.)

Figure 1

2) Set the Guide UD on the Base Main. After setting the part, push it in direction 3.

Figure 2

2-6

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ORDER OF ASSEMBLY FOR MECHANISM DECK

3) Set the Gear Loading 1 and Gear Pulley 2 on the

Figure 3

Base Main. Hang the belt between the Gear Pulley and Motor Pulley. Assemble the Clamp Disc, Clamp Magnet and Cover Plate to the Base Main.

4) After setting the Gear Main 2, Gear Pu Up 3 and Gear Pu Down 4 on the Base Main, tighten the screws. After assembling the Gear Main, align the location as shown in Figure.

Figure 4

2-7

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ORDER OF ASSEMBLY FOR MECHANISM DECK

Figure 5

5) After setting the Main PCB Assy on the Base Main,

tighten the screw. (Set the part accurately on the hook) Solder the Motor Jump Wire on the PCB set on the Base Main.

Figure 6

6) Set the Base Sled Assy on the Base Main. (When setting the part, assemble with the CAM part of the Guide UD inserted in two locations of the Boss of Frame UD) Align the FFC to the Guide and connect the Harness Cable.

2-8

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ORDER OF ASSEMBLY FOR MECHANISM DECK

Figure 7

7) After setting the Gear Tray, Tray Motor Assy and Load-

ing PCB Assy on the Tray Loading, tighten the screw.

Figure 8

8) Assemble the Gear Tray CAM on the Tray Loading and set the Tray Disc. (When assembling, check the location of the Gear Tray CAM and Tray Disc as shown in the Figure)

2-9

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ORDER OF ASSEMBLY FOR MECHANISM DECK

Figure 9 Figure 10

9) Assemble the Tray Loading Assy on the Base Main

Assy as shown in the Figure. After assembling, insert the Loading FFC to the 5 Pin Wafer of Main PCB Assy.

10) After setting the Cover Guide Disc, tighten the screw.

2-10

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EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION (MCV1306)

268

464

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.

A49

CABLE1

A42

iPod

464

264

VOLUME

A43

CABLE7

464

463

CABLE6

464

VFD

464

269

270

464

463

269

464

A26

SMPS

492

A47

251

255B

255A

255C

A45

USB

CABLE2

463

265

266A

267

464

A44

464

463

464

266

MAIN

464

A46

CN102

CN101

271

274

465

272

300

274

464

2-11 2-12

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2. MECHANISM DECK SECTION (CDM-H1803)

MEMO

A26

153

443

159

173

153A

443

416

151

443

416

155

156

422

182

177

001

166

167

164

417

162

163

172

165

422

175

440

421

012

002

003

180

137

421

012

012B

012A

A02

A01

010

421

012

012B

421

012

2-13 2-14

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3. PACKING ACCESSORY SECTION

801 Owner’s Manual

808 Battery

910 Cover

900 Remote Control

803 Packing

804 Bag

824 AM Loop Antenna

825 FM Wire Antenna

802 Box

2-15

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4. SPEAKER SECTION

4-1. FRONT SPEAKER (MCS1306F)

A60L A60R

2-16

Page 26

4-2. REAR SPEAKER (MCS1306S)

A80L A80R

2-17

Page 27

4-3. PASSIVE SUBWOOFER (MCS1306W)

A90

2-18

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SECTION 3 ELECTRICAL

CONTENTS

TRAINING MASTER ................................................................................................................................... 3-2

1. NO SOUND FROM SPEAKERS ............................................................................................................ 3-2

2. NO SOUND IN AUX FUNCTION ............................................................................................................ 3-3

3. NO SOUND IN PORT. IN FUNCTION ................................................................................................... 3-4

4. NO SOUND IN IPOD FUNCTION .......................................................................................................... 3-5

5. NO SOUND IN AM/FM FUNCTION ....................................................................................................... 3-6

6. NO SOUND IN CD FUNCTION .............................................................................................................. 3-7

7. NO SOUND IN USB FUNCTION ............................................................................................................ 3-9

8. NO POWER .......................................................................................................................................... 3-10

ONE POINT REPAIR GUIDE ................................................................................................................. 3-11

1. NO POWER .......................................................................................................................................... 3-11

2. NO BOOTING WHEN POWER ON THE SET ..................................................................................... 3-13

3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET ................................................................... 3-14

4. NO OPERATION OF MD ..................................................................................................................... 3-15

5. NO SOUND .......................................................................................................................................... 3-21

ELECTRICAL TROUBLESHOOTING GUIDE .................................................................................. 3-29

1. POWER SUPPLY ON SMPS BOARD ................................................................................................. 3-29

2. SYSTEM PART .................................................................................................................................... 3-33

3. NO AUDIO PART ................................................................................................................................. 3-34

4. DIGITAL AUDIO AMP CHECK ............................................................................................................. 3-39

WAVEFORMS ............................................................................................................................................. 3-40

WIRING DIAGRAM ................................................................................................................................... 3-43

BLOCK DIAGRAMS ................................................................................................................................. 3-45

1. OVERALL BLOCK DIAGRAM .............................................................................................................. 3-45

2. SMPS BLOCK DIAGRAM..................................................................................................................... 3-47

3. POWER BLOCK DIAGRAM ................................................................................................................. 3-49

CIRCUIT DIAGRAMS ............................................................................................................................... 3-51

1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-51

2. MICOM CIRCUIT DIAGRAM ................................................................................................................ 3-53

3. PWM CIRCUIT DIAGRAM .................................................................................................................... 3-55

4. AMP CIRCUIT DIAGRAM ..................................................................................................................... 3-57

5. DSP CIRCUIT DIAGRAM ..................................................................................................................... 3-59

6. RF SERVO CIRCUIT DIAGRAM .......................................................................................................... 3-61

7. ADC CIRCUIT DIAGRAM ..................................................................................................................... 3-63

8. BEAT BOX CIRCUIT DIAGRAM .......................................................................................................... 3-65

9. VFD CIRCUIT DIAGRAM ..................................................................................................................... 3-67

10. VOLUME CIRCUIT DIAGRAM ............................................................................................................. 3-69

11. USB CIRCUIT DIAGRAM ..................................................................................................................... 3-71

12. IPOD CIRCUIT DIAGRAM .................................................................................................................... 3-73

13. MIC CIRCUIT DIAGRAM (OPTIONAL PART) ..................................................................................... 3-75

CIRCUIT VOLTAGE CHART ................................................................................................................. 3-77

PRINTED CIRCUIT BOARD DIAGRAMS ......................................................................................... 3-81

1. MAIN P.C.BOARD ................................................................................................................................ 3-81

2. SMPS P.C.BOARD ............................................................................................................................... 3-85

3. VFD P.C.BOARD .................................................................................................................................. 3-87

4. VOLUME P.C.BOARD .......................................................................................................................... 3-89

5. USB P.C.BOARD .................................................................................................................................. 3-91

6. IPOD P.C.BOARD ................................................................................................................................ 3-91

7. MIC P.C.BOARD (OPTIONAL PART) .................................................................................................. 3-91

3-1

Page 29

TRAINING MASTER

1. NO SOUND FROM SPEAKERS

Are the speaker cables connected correctly

between the speaker terminals on the unit

and the speakers?

YES

Does the customer select correctly

the input function he or she wants to listen to?

YES

After pressing FUNCTION,

is “CD, USB, AUX, IPOD, AM or FM” displayed?

YES

Turn the master volume clockwise

for the volume up.

YES

Make sure to connect the cables to each specified

connector tightly on the unit.

Connect the woofer cables to the WOOF SYSTEM

connectors on the rear panel.

Make sure to connect some cables like A/V cables

and FM/AM antenna cables.

Make sure to select the desired input function

pressing FUCTION button.

The volume level LEDs around the master volume

will be turned on more and more

while turning it clockwise for the volume up.

Is there any sound from the selected input source?

(AUX IN, USB, TUNER or CD Disc)

YES

Are the sound spectrum level LEDs

on the left and right side of the front panel

being changed up and down

according to the sound input gain?

YES

The sound is output from the speakers.

YES

Sound OK

Refer to a device’s instruction manual

and then check if there is sound output from it

connecting another audio system.

The sound spectrum level LEDs will be turned on/off

repeatedly at regular intervals. The speakers cables

might be short-circuited with the chassis ground.

Be careful not to be shorted each other.

3-2

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TRAINING MASTER

2. NO SOUND IN AUX FUNCTION

Does the customer select correctly

the AUX function he or her wants to listen to?

YES

After pressing the FUNCTION,

is “AUX” displayed on VFD?

YES

Turn the master volume clockwise

for the volume up.

YES

Is there any sound

from the selected input source?

YES

Make sure to connect some cables

between the AUX IN jacks of the unit

and the Audio output jacks of a external Audio device.

Make sure to select the AUX IN function

pressing the AUX/IPOD/PORT. IN button.

The volume level LEDs around the master volume

will be turned on more and more

while turning it clockwise for the volume up.

Refer to a device’s instruction manual

and then check if there is sound output

from it connecting another audio system

Are the sound spectrum level LED’s

on the left and right side of the front panel

being changed up and down

according to the sound input gain?

YES

Are the speaker cables connected correctly

between the speaker terminals on the unit

and the speakers?

YES

The sound is output

from the speakers.

YES

Sound OK

The sound spectrum level LED’s will be turned on/off

repeatedly at regular intervals. A speaker cable

might be short-circuited with the chassis ground.

Be careful not to be shorted each other.

Make sure to connect the cables to each specified

connector tightly on the unit.

3-3

Page 31

TRAINING MASTER

3. NO SOUND IN PORT. IN FUNCTION

Does the customer select correctly

the PORT. IN function he or her wants to listen to?

YES

Is “PORT. IN” displayed on VFD?

YES

Turn the master volume clockwise

for the volume up.

YES

Is there any sound

from the selected input source?

YES

Make sure to connect a cable

between the PORT. IN jack of the unit and the Audio

output jack of a portable device like a MP3 player.

Make sure to select the PORT. IN function

pressing the AUX/IPOD/PORT. IN button.

The volume level LEDs around the master volume

will be turned on more and more

while turning it clockwise for the volume up.

Refer to a portable device’s instruction manual

and then check if there is sound output

from it connecting another audio system.

Are the sound spectrum level LED’s

on the left and right side of the front panel

being changed up and down

according to the sound input gain?

YES

Are the speaker cables connected correctly

between the speaker terminals on the unit

and the speakers?

YES

The sound is output

from the speakers.

YES

Sound OK

The sound spectrum level LED’s will be turned on/off

repeatedly at regular intervals. A speaker cable

might be short-circuited with the chassis ground.

Be careful not to be shorted each other.

Make sure to connect the cables to each specified

connector tightly on the unit.

3-4

Page 32

TRAINING MASTER

4. NO SOUND IN IPOD FUNCTION

Does the customer select correctly

the iPod function he or she wants to listen to?

YES

Does the customer use the compatible iPod?

YES

After displaying “Loading”,

is “IPOD” displayed on VFD?

YES

After selecting desired songs

using the user interface of a iPod or a iPhone,

press PALY button and turn the master volume

clockwise for the volume up.

YES

Make sure to put a iPod or a iPhone

on the docking system on the top of the unit.

Make sure that The unit supports the models

as follows/iPod nano 1 G, 2 G, 3 G, 4 G, 5 G, 6 G/

iPod classic/ iPod 4 G, 5 G/

iPod touch 2 G, 3 G, 4 G/ iPhone 3 G, 4 G/.

If “ERROR”message is displayed, make sure firmly to put a iPod or a iPhone on the docking system on the top of the unit. When the battery of a iPod or a iPhone is fully discharged, the

unit can not detect IPOD function, Please wait for a moment

and then it will work after charging a little.

The volume level LEDs around the master volume

will be turned on more and more

while turning it clockwise for the volume up.

Refer to a device’s instruction manual

and then check if there is sound output

from it connecting another audio system.

Is there any sound from iPod or iPhone?

YES

Are the sound spectrum level LED’s

on the left and right side of the front panel

being changed up and down

according to the sound input gain?

The sound spectrum level LED’s will be turned on/off

repeatedly at regular intervals. A speaker cable might

be short-circuited with the chassis ground.

Be careful not to be shorted each other.

YES

Are the speaker cables connected correctly

between the speaker terminals on the unit

and the speakers?

Make sure to connect the cables

to each specified connector tightly on the unit.

YES

The sound is output from the speakers. Sound OK

YES

3-5

Page 33

TRAINING MASTER

5. NO SOUND IN AM/FM FUNCTION

Does the customer select correctly

the AM/FM function he or she wants to listen to?

Make sure to connect AM/FM antennas

on the rear panel of the unit.

YES

Is “AM or FM” displayed on VFD?

Make sure to select AM or FM function

pressing the FUNC button.

YES

After tuning a desired channel

using the TUNING± button,

is the sound quality good to listen to the music?

To prevent noise pickup, keep the AM Loop

antenna away from the unit and other components.

Be sure to fully extend the FM wire antenna. After

connecting the FM wire antenna, keep it horizontal.

YES

Is the signal strength of the radio station too week? Make sure to tune the station manually.

YES

Are the sound spectrum level LED’s

on the left and right side of the front panel

being changed up and down

according to the sound input gain?

YES

Are the speaker cables connected correctly

between the speaker terminals on the unit

and the speakers?

YES

The sound is output

from the speakers.

YES

Sound OK

The sound spectrum level LED’s will be turned on/off

repeatedly at regular intervals. A speaker cable might

be short-circuited with the chassis ground.

Be careful not to be shorted each other.

Make sure to connect the cables to each specified

connector tightly on the unit.

3-6

Page 34

TRAINING MASTER

6. NO SOUND IN CD FUNCTION

Does the customer select correctly

the CD function he or she wants to listen to?

Make sure to put on a CD disc on the tray.

YES

Is a CD disc put on the tray correctly? Make sure to insert the CD disc upside down.

YES

Does the unit display “NO DISC” on VFD

when a disc is inserted on the tray?

Place the disc with the label

or printed side facing upwards.

YES

Does the customer use

the supported mp3 or WMA music files on the disc?

Check the playable disc.

Make sure that the file extensions

are “.mp3” or “.wma”.

YES

When the unit searches music files in a CD disc,

are the following messages displayed on VFD?

“SELECTED”  “TRACKING #” and “TIME”

YES

After selecting a track number using the SCAN or

DISC# button, press PLAY button and turn the master

volume clockwise for the volume up.

YES

Is the sound quality good to listen to the music?

YES

Are the sound spectrum level LED’s

on the left and right side of the front panel

changed up and down

according to the sound input gain?

YES

Make sure to check

the supported MP3/WMA music file on the CD disc.

Refer to the owner’s manual.

The volume level LEDs around the master volume

will be turned on more and more

while turning it clockwise for the volume up.

Make sure to clean CD discs with a commercially

available cleaner. If the surface of the disc is polluted

or scratched, the sound quality can become bad

or the customer can not listen to the music.

The sound spectrum level LED’s will be turned on/off

repeatedly at regular intervals. A speaker cable

might be short-circuited with the chassis ground.

Be careful not to be shorted each other.

3-7

Page 35

YES

TRAINING MASTER

Are the speaker cables connected correctly

between the speaker terminals on the unit

and the speakers?

YES

The sound is output from the speakers. Sound OK

Make sure to connect the cables

to each specified connector tightly on the unit.

3-8

Page 36

TRAINING MASTER

7. NO SOUND IN USB FUNCTION

Does the customer select correctly

the USB function he or she wants to listen to?

YES

Is “USB” displayed on VFD?

YES

Does the unit display “SELECTED” on VFD

when a USB is inserted into the USB port?

YES

Does the customer use the supported

mp3 or WMA music files on the disc?

YES

Make sure to insert a USB on the USB ports

on the bottom of the unit.

Make sure to select the USB function

pressing the CD/USB button.

When “No USB” is displayed,

make sure that the customer uses the recommended

USB which support USB2.0 or USB1.1.

Check if it is the playable disc or not.

Make sure that the file extensions are

“.mp3”or “.wma”.

When the unit searches music files in a USB,

are the following messages displayed on VFD?

“SELECTED”  “TRACKING #” and “TIME”

YES

After selecting a track number using the SCAN button,

press PLAY button and turn the master volume

clockwise for the volume up.

YES

Are the sound spectrum level

on the left and right side of the front panel

being changed up and down

according to the sound input gain?

YES

Are the speaker cables connected correctly

between the speaker terminals on the unit

and the speakers?

YES

Make sure to check the compatible USB device

and the supported MP3/WMA music file requirement.

Refer to the owner’s manual.

The volume level LEDs around the master volume

will be turned on more and more

while turning it clockwise for the volume up.

The sound spectrum level will be turned on/off

repeatedly at regular intervals. A speaker cable

might be short-circuited with the chassis ground.

Be careful not to be shorted each other.

Make sure to connect the cables

to each specified connector tightly on the unit.

3-9

Page 37

YES

TRAINING MASTER

The sound is output from the speakers. Sound OK

8. NO POWER

Is the power cord plugged

into a electrical outlet?

Does the Standby LED light

YES

in red color?

YES

Make sure to plug the power cord of the unit

into a electrical outlet.

If the customer can not see the red light

on the front panel, the SMPS might have any problem.

Please solve the problem

referring to the service manual.

Is the Standby LED turned off

after pressing the Power button

on the remote control?

YES

Are the messages displayed

in the following order on VFD?

“HELLOW”  “VOLUME 15”  “FUNCTION”

YES

Is there any sound

from the speakers each input function?

YES

Power & Sound OK

Replace the batteries with new ones

if the remote control doesn’t work.

The SMPS might be not able to supply the power

to drive the VFD.

Refer to the service manual to fix it.

Make sure to connect speaker cables.

3-10

Page 38

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, TH903 on SMPS board.

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

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

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

3) Check if the NTC thermistor TH901 and TH902 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, TH903 >

If TH901 or TH902 is open,

replace it with a new one.

3-11

Page 39

ONE POINT REPAIR GUIDE

NO POWER

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

1-2. D951, ZD951

1-2-1. Solution

Please check and replace D951, ZD951 on SMPS board.

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

1) Check the Anode-Cathod Voltage of D951 with a digital multi-meter, it is normally 0.2 ~ 0.3 V.  If it doesn’t have any voltage, it’s destroyed. Replace it with a new one.

2) Check if ZD951 is short-circuit.  If it is short-circuit, and then replace it with a new one.

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

< SMPS schematic diagram >

3-12

Page 40

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 IC101 on MAIN board.

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

1) Check the 3.7VA to CN102, CN103, and CN104 in standby mode.  If there is no 3.7 VA, check the SMPS.

2) Check 5.6 V, 12 VA, FL+, FL- and 32 V 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 the IC101 with a new one on the main board.

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

w~yj{ys

OyX[`P

rlX

OX[P

XWW

O`UZ_ZWto¡P

XWX

OZYU^]_ro¡P

< Signal check point >

3-13

Page 41

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 DIG301 on FRONT board.

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

1) Check if 32 V, FL+ and FL- are output from SMPS to VFD via the MAIN board.

2) Check if the IC101 outputs VFD_RST, VFD_CLK, VFD_STB, and VFD_STB to the FRONT board.

3) Check if the VFD grid current amplifier circuit (Q301, Q303, Q304) on the FRONT board. Check the drive signal to the transistor’s base.

 If the control signals from VFD (TP302, TP303, TP304) isn’t output, replace VFD with a new one.  If the transistor doesn’t work, replace it.

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

kpn ZWXG} mk

{w ZWYSG {w ZWZSG

{wZW[

xZWX xZW[xZWZ

yZY^O{w ZW[P xZWXGl

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

j GGGGU

< Waveform of the grid current driver >

G

ZW} T

3-14

Page 42

ONE POINT REPAIR GUIDE

4. NO OPERATION OF MD

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

4-1. SPinDLE MOTOR

4-1-1. Solution

Please check and replace IC407, IC408 on MAIN board.

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

1) Check the SPDO signal from Pin16 of IC407.  If no signal, check 3.3V(RF) and X402.

2) Check the SP- & SP+ from IC408 to CN405 for driving SPinDLE motor. It is about 3.6 Vp-p.  If no signal, check +1.8 V and +5 V for IC408.

3) Check if the FFC cable is solidly connected between CN405 and MD.

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

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

G ZU]} T

zwTGju[W\

z wRG Gju[W\

< Waveform of SP- & SP+

for driving SPinDLE motor >

zwR

YGGju[W\

zwT

XGGju[W\

< Signal check point >

pj[W_

3-15

Page 43

ONE POINT REPAIR GUIDE

NO OPERATION OF MD

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

4-2. SLED MOTOR

4-2-1. Solution

Please check and replace IC407, IC408 on MAIN board.

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

1) Check the SLDO signal from Pin15 of IC407.  If no signal, check 3.3V(RF) and X402.

2) Check the SLED+ & SLED-from IC408 to CN405 for driving SPinDLE motor. It is about 2.9 Vp-p.  If no signal, check +1.8V and +5V for IC408.

3) Check if the FFC cable is solidly connected between CN405 and MD.

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

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

hG YU`} T

zsTGju[W\

zwT G ju[W\

z sRGGju[W\

zwRGGju[W\

< Waveform of SLED- & SLED+

for driving SLED motor >

zsR

[GGju[W\

zsT

ZGGju[W\

< Signal check point >

pj[W_

3-16

Page 44

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 MOTOR among them.

4-3. TRAY MOTOR

4-3-1. Solution

Please check and replace IC407, IC408 on MAIN board.

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

1) Check TUR+ & TUR-signals from Pin56 & 57 of IC501 to IC406.  If no signal, check +5 V to IC406.

2) Check TUR_M+ & TUR_M- from IC406 to CN405 for driving TRAY motor. It is about 3.8 Vp-p.  If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one.

3) Check if the FFC cable is solidly connected between CN405 and MD.

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

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

hG ZU_} T

{| ytRGGju[W\

{| ytTGju[W\

< Waveform of TUR_M± for driving TRAY motor >

{|ytT

_GGju[W\

{|ytR

^GGju[W\

< Signal check point >

pj[W_

3-17

Page 45

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.

4-4. TRAY OPEN / CLOSE MOTOR

4-4-1. Solution

Please check and replace IC407, IC408 on MAIN board.

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

1) Check MOT_OPEN & MOT_CLOSE signals from Pin104 & 105 of IC501 to IC408.  If no signal, check +1.8 V & + 5 V to IC408.

2) Check LOAD± from IC406 to CN405 for driving the tray open / close motor. It is about 3.85 Vp-p.  If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one.

3) Check if the FFC cable is solidly connected between CN405 and MD.

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

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

hG ZU_\} T

tv{ vwlu

tv{ jsvzl svT Gju[W[ svRGGju[W[

< Waveform

for driving TRAY open / close motor >

ju[W\

svR

XZGGju[W\

tv{vwlu

^GGpj[W_

tv{jsvzl

]GGpj[W_

svT

XYGGju[W\

< Signal check point >

pj[W_

3-18

Page 46

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.

4-5. LASER TRACKING ACTUATOR

4-5-1. Solution

Please check and replace IC407, IC408 on MAIN board.

4-5-2. 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 IC407.  If no signal, check 3.3 V(RF) and X402.

2) Check T- & T+ from IC408 to CN404 for driving the tracking actuator.  If no signal, check +1.8 V and +5 V for IC408.

3) Check if the FFC cable is solidly connected between CN404 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.

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

{TGju[W[ {RGGju[W[

< Waveform of T±

for driving TRACKING actuator >

ju[W[

ZG Gju[W[

YG Gju[W[

< Signal check point >

3-19

Page 47

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.

4-6. LASER FOCUSING ACTUATOR

4-6-1. Solution

Please check and replace IC407, IC408 on MAIN board.

4-6-2. 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 IC407.  If no signal, check 3.3 V(RF) and X402.

2) Check F- & F+ from IC408 to CN404 for driving the focusing actuator.  If no signal, check +1.8 V and +5 V for IC408.

3) Check if the FFC cable is solidly connected between CN404 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.

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

mRGGju[W[

mT Gju[W[

< Waveform of TR±

for driving FOCUSING actuator >

ju[W[

[G Gju[W[

XG Gju[W[

< Signal check point >

3-20

Page 48

ONE POINT REPAIR GUIDE

5. NO SOUND

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

5-1. IN THE CD FUNCTION

5-1-1. Solution

Please check and replace IC501, IC602, IC801 on MAIN board.

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

1) Check CD_BCK, CD_LRCK, & CD_DATA signals from IC407 to IC501.  If no signal, check if the RF & servo signals from MD is entered to IC407. Refer to the “No operation of MD” guide on Item 4.

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

- DAC_BCK: IC501_87Pin --> IC507_16Pin --> IC602_4Pin

- DAC_LRCK : IC501_88Pin --> IC507_5Pin --> IC602_4Pin (44.1 kHz)

- DAC_DATA : IC501_83Pin --> R817 next to IC01 --> IC602_6/9Pin

- DAC_MCLK : IC501_86Pin --> R818 next to IC801  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)

IC407

BU9543KV

IC501

MLC9800

BEAT_ DATA DAC_MCLK

IC801

FS502B

BEAT BOX

DAC_BCK

DAC_LRCK

IC602

PS9850

PWM

< I2S Signal Flow >

AMP IC

TAS5631

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

< Waveform of I2S audio interface signals >

3-21

Page 49

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, IC703 on MAIN board.

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

1) Check FL±, FR±, RL±, RR±, SW1±, & SW2± signals from IC602 to IC701, 702 & 703 each input function.  If no signal, check if I2S audio signals are entered to IC602. Refer to “I2S audio signal interface” on Item 5-1.

2) Check PVDD_48V.  If 48 V is abnormal, check the SMPS.

3) Check +12 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 a ferrite bead among FB703, FB707 and FB713 one by one. When removed a ferrite bead, 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 SPK+ & GND and SPK- & 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.

Comments !!

If a AMP IC among three is damaged, “AMP_PDN” to R103 changes HIGH to LOW at regular intervals. The sound is not output by AMP power down function.

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

pj^WX pj^WY pj^WZ

ilh k

< Signal check point >

yXWZOhtwwkuP

khjkh{h

pjXWX

3-22

Page 50

ONE POINT REPAIR GUIDE

NO SOUND

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

5-3. IN THE USB FUNCTION

5-3-1. Solution

Please check and replace IC501, IC504 on MAIN board & IC3U01 on USB board.

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

1) Check +5VU to USB board.  If the USB LEDs are turned on, the voltage is okay, if so not, check +5.6 V to Pin8 of CN602.

2) Check USB D± from main board to USB board. a. Check USB_HUB_DN/DP signals to IC501(Pin116, 117) b. Check USB1/2_DN/DP signals from IC504 to CN602 (Pin10, 11, 13, & 14)  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)

IC504

USB2512B

ADC_D ATADAC_MCLK

IC501

MLC9800

DAC_DAT A DAC_MCLK

IC801

FS502B

BEAT BOX

< USB function signal ﬂ ow >

USB_D

DAC_BCK

DAC_L RCK

BEAT_ DATA

USB

Board

IC602

PS9850

USB

AMP IC

TAS5631

PWM

kT  G XWG Gju]WY

kRGGGXXGGju]WY

< Waveform of USB D± signal >

3-23

Page 51

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 IC202 on MAIN board.

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

1) Check AUX_L/R signals to IC202 (Pin7, 8).

2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.

3) Check if ADC_DATA is entered from IC202 to IC501.  If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.

4) Check the following I2S signal flow from IC501 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)

IC202

CS5346

ADC_D ATADAC_MCLK

IC501

MLC9800

DAC_DAT A DAC_MCLK

IC801

FS502B

BEAT BOX

< AUX function signal ﬂ ow >

AUX_ L/R

DAC_BC K

DAC_L RCK

BEAT_ DATA

AUX

IC602

PS9850

PWM

AMP IC

TAS5631

pjYWY

h kj k h{hGG GyYX\

hkjijrGGyYX]

kRGGGXXGGju]WY

< Signal check point >

h| sGGyYWYh|yGGyYWZ

hkjtjsrGGyYYX

hkjsyjrGGyYX`

3-24

Page 52

ONE POINT REPAIR GUIDE

NO SOUND

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

5-5. IN THE IPOD FUNCTION

5-5-1. Solution

Please check and replace IC201, IC202, IC203 on MAIN board.

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

1) Check USB VBUS_+5V to Pin3 of CN201 after inserting the iPod to IPOD Docking System.  If no power, check if IPOD_P_CTRL to Pin3 of IC203 change Low to High.

2) Check if IPOD Audio L/R signals are entered from Pin11 & 12 of CN201 to Pin10 & 6 of IC201.

3) Check if the IPOD Audio L/R that some noise is removed to IC201 are output from Pin1 & 5 of IC201.  If no signal, replace the IC with a new one.

4) Check IPOD_L/R signals from 1 & 5 of IC201 to IC202(Pin26, 27).

5) Check if ADC_BCK, ADC_LRCK & DAC_MCLK are entered from IC501 to IC202.

6) Check if ADC_DATA is entered from IC202 to IC501.  If there is no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.

7) Check the following I2S signal flow from IC501 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.

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

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

IC202

CS5346

IC501

MLC9800

DAC_DAT A DAC_MCLK

IC801

FS502B

BEAT BOX

IPOD_ L/R

ADC_D ATADAC_MCLK

DAC_BC K

DAC_L RCK

BEAT_ DATA

iPod

IC602

PS9850

PWM

< iPod function signal ﬂ ow >

AMP IC

TAS5631

hkjtjsrGGyYYX

pjYWY

hkjs GyYX

pw vksGGy YY]X hkjijrGGy

< Signal check point >

3-25

Page 53

ONE POINT REPAIR GUIDE

NO SOUND

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

5-6. IN THE PORT. IN FUNCTION

5-6-1. Solution

Please check and replace IC202 on MAIN board.

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

1) Check PT_L/R signal from Main board to USB board.

2) Check if PT_LR is entered from Pin1 & 3 of CN3U01 to Pin1 & 3 to CN502.

3) Check POT_L/R signals to IC202(Pin21, 22).

4) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.

5) Check if ADC_DATA is entered from IC202 to IC501.  If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.

6) Check the following I2S signal flow from IC501 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.

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

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

IC202

CS5346

IC501

MLC9800

DAC_DAT A DAC_MCLK

IC801

FS502B

BEAT BOX

< PORT. IN function signal ﬂ ow >

ADC_D ATADAC_MCLK

POT_L/R

DAC_BC K

DAC_L RCK

BEAT_ DATA

USB

Board

IC602

PS9850

PWM

POT . IN

AMP IC

TAS5631

w{sGGYX

w{yGGYY

kRGGGXXGGju]WY

h| sGGyYWY

hkjtjsrGGyYYX

pjYWY

h kj k h{hGG GyYX\

hkjijrGGyYX]

hkjsyjrGGyYX`

< Signal check point >

3-26

Page 54

ONE POINT REPAIR GUIDE

NO SOUND

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

5-7. IN THE TUNER FUNCTION

5-7-1. Solution

Please check and replace IC202, TU101 on MAIN board.

5-7-2. How to troubleshoot (Countermeasure)

1) Check if TUNER_LR is entered from Pin1 & 3 of T1U01 to IC202(Pin23, 24).

 If no signals, Check +3.3 V for Tuner power.  Check if the Tuner control signals (CLK, DAT, CE, RST, GPO2) are entered from IC101 to TU101.

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

2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.

3) Check if ADC_DATA is entered from IC202 to IC501.  If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.

4) Check the following I2S audio signal flow from IC501 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.

5-7-3. Service hint (Any picture / Remark)

IC202

CS5346

IC501

MLC9800

DAC_DAT A DAC_MCLK

IC801

FS502B

BEAT BOX

< TUNER function signal ﬂ ow >

ADC_D ATADAC_MCLK

TUNER _L/ R

DAC_BC K

DAC_L RCK

BEAT_ DATA

IC602

PS9850

PWM

TUNER

AMP IC

TAS5631

{|ulysG

GYZ

{|ulyyG

GY[

h kj k h{hGG GyYX\

hkjijrGGyYX]

kRGGGXXGGju]WY

< Signal check point >

h| sGGyYWY

hkjtjsrGGyYYX

pjYWY

hkjsyjrGGyYX`

3-27

Page 55

ONE POINT REPAIR GUIDE

NO SOUND

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

5-8. IN THE MIC IN FUNCTION

5-8-1. Solution

Please check and replace IC603, IC605 on MAIN board.

5-8-2. How to troubleshoot (Countermeasure)

1) Check MIC_SIG signal to Pin 27 of CN104.  If no signal, Check the signal to Pin 3 of CN301 on the FRONT board. Check if the signal is entered from Pin3 of CN301 to MAIN board.

2) Check if MIC_SIG is entered from Pin27 of CN104 to Pin3 to IC605 (MIC AMP).

3) Check if the amplified signal is entered from Pin4 of IC605.  If no signal output, check +12 V for IC605, replace IC605 with a new one if it has a problem.

4) Check if MIC_BCK & MIC_LRCK is entered from IC507 to IC603 and DAC_MLCK from IC501 to IC603. Check if MIC_DATA is entered from Pin 9 of IC603I to Pin 7 of IC602.  If no signal, check +5 V & +3.3 V for IC603. If it is abnormal, change replace it a new one.

6) Check the following I2S signal flow from IC603 to IC602.  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 5-2.  If AMP is damaged, replace it with a new one.

5-8-3. Service hint (Any picture / Remark)

IC603

AK5358

MLC9800

DAC_DAT A DAC_MCLK

BEAT BOX

MIG_SIG

MIC_DATADAC_MCLK

IC501

IC801

FS502B

< MIC IN function signal ﬂ ow >

IC605 S4308

DAC_BC K

DAC_L RCK

BEAT_ DATA

Board

IC602

PS9850

PWM

MIC

AMP IC

TAS5631

MIC IN

zkv|{X

 Gy][\

tpjsyjrGGy][[

< Signal check point >

tpjz pnGGGXMYG

hkjtjsrGGy]_Y

tpjijrGGy][Z

3-28

Page 56

ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER SUPPLY ON SMPS BOARD

No output 3.7 / 5.6 VA

F901 normal?

YES

BD901 normal?

YES

D904 normal?

YES

IC934 normal?

YES

D933, D937 normal?

YES

Replace F901 (same fuse).

Replace BD901.

Replace D904.

Replace IC934.

Replace D933, D937.

Power line of MAIN PCB is short.

3-29

Page 57

ELECTRICAL TROUBLESHOOTING GUIDE

No output 12 V

F901 normal?

YES

BD901 normal?

YES

D904 normal?

YES

D934, D935 normal?

YES

IC931 normal?

YES

Replace F901 (same fuse).

Replace BD901.

Replace D904.

Replace D934, D935.

Replace IC931.

Power Line of Main PCB is short.

3-30

Page 58

ELECTRICAL TROUBLESHOOTING GUIDE

No output FL+/FL-

P-CTRL OK?

YES

D931, D932

OK?

YES

ZD931 OK?

YES

FR931 short?

YES

Check soldering of PN901.

Check 3.3 V Output & P-CTRL.

Replace D931, D932.

Replace ZD931.

Replace FR931.

3-31

Page 59

ELECTRICAL TROUBLESHOOTING GUIDE

No AMP Output

Is the

VCC supplied to

IC911 Pin7?

YES

ZD912, ZD913

OK ?

YES

D951, D952

OK ?

YES

P-CTRL OK?

YES

Q901,D904

OK?

YES

Replace ZD912, ZD913.

Replace D951, D952.

Check 3.3V & P-CTRL.

Replace D914/ Q900/ PC901.

Check soldering of CN902.

3-32

Page 60

ELECTRICAL TROUBLESHOOTING GUIDE

2. SYSTEM PART

Power on.

“HELO”

Display on FLD

OK?

YES

Volume LED

(LD302~LD322)

Turn on?

CN301

cable connection

OK?

YES

CN301

Pin27, 28, 29 power

OK?

YES

CN301

Pin20, 21, 22 data signal

OK?

YES

Q301, 303, 304

grid voltage OK?

CN301 Pin18

+12 V OK?

Check FFC cable (Pin29).

Check SMPS board.

Check MAIN board.

Replace DIG301.

Check SMPS board.

YES

When turn

the volume, count is

change?

YES

FRONT board OK.

YES

CN301 Pin7, 9, 12

I2C data OK?

YES

Replace LED

(LD302 ~ LD322).

CN301 Pin13, 14

signal OK?

YES

Check MAIN board.

3-33

Check MAIN board.

Check FFC cable.

Page 61

ELECTRICAL TROUBLESHOOTING GUIDE

3. NO AUDIO PART

CD FUNCTION

Can

disc insert?

YES

Disc reading OK?

YES

IC501

Pin100,101,102 I2S input

signal OK?

LOAD +- ok ?

YES

Is motor impedance

about 12 Ω?

OPU driving

(Focusing & Tracking) OK?

Check OPU.

(Pick-up module)

Is motor_open/ close OK?

(IC408 Pin9,10)

YES

Check IC301.

Check Loading motor.

Check IC408.

Focusing/

Tracking/ Sled Signal

OK?

YES

PD(CN404 Pin5)

about 180 mV?

YES

IC407

Pin34,35,36 I2S output

signal OK?

YES

IC501

Pin100,101,102 I2S input

signal OK?

YES

IC407

RF & Servo signal

OK?

YES

Check IC501.

3-34

Check FFC cable

to CN404, CN405.

Page 62

ELECTRICAL TROUBLESHOOTING GUIDE

USB play

Pin116,117 USB_D output

IC501

signal OK?

YES

When insert

USB,IC502 Pin1,2,3,4 USB_D

signal OK?

YES

AUX

Check IC501.

IC3U01

USB power +5 V

OK?

YES

Replace IC3U01.

Pin7,8 AUX input signal

IC202

OK?

YES

IC202

Pin42,43,44 I2S input signal

OK?

YES

IC202

Pin41 ADC data output signal

OK?

YES

Check audio cable.

Check IC501.

Replace IC202.

3-35

Page 63

ELECTRICAL TROUBLESHOOTING GUIDE

POT. IN

Pin21,22 POT. IN input signal

IC202

OK?

YES

IC202

Pin42,43,44 I2S input signal

OK?

YES

IC202

Pin41 ADC data output signal

OK?

YES

iPod

Check USB board.

Check IC501.

Replace IC202.

Pin25,26 iPod input signal

IC202

OK?

YES

IC202

Pin42,43,44 I2S input signal

OK?

YES

IC202

Pin41 ADC data output

signal OK?

YES

Pin4 USB_VBUS 5 V

IC203

OK?

YES

Check IC501.

Replace IC202.

3-36

Check USB_VBUS of IC203.

Page 64

ELECTRICAL TROUBLESHOOTING GUIDE

TUNER

Pin21,22 TUNER_L/R input

IC202

signal OK?

YES

IC202

Pin42,43,44 I2S input

signal OK?

YES

IC202

Pin41 ADC data output

signal OK?

YES

TU101

TUNER_L/R output

signal OK?

YES

Check IC501.

Replace IC202.

Check +3.3 V of TU101.

3-37

Page 65

ELECTRICAL TROUBLESHOOTING GUIDE

Pin83,87,88 I2S data output

IC501

signal OK?

YES

IC507

Pin2,17 DAC_BCK/LRCK input

signal OK?

YES

IC507

Pin7,14 BEAT_LRCK/BCK output

signal OK?

YES

IC501

Pin83 BEAT_DAC_DATA output

signal OK?

YES

IC501

Pin83 BEAT_DAC_DATA output

signal OK?

YES

Replace IC501.

Check IC507.

Replace IC507.

Check IC501.

IC801

I2S input signal

OK?

YES

IC801

BEAT_DATA output signal

OK?

YES

Check IC501.

Check IC801.

3-38

Page 66

ELECTRICAL TROUBLESHOOTING GUIDE

4. DIGITAL AUDIO AMP CHECK

IC602

I2S input signal

OK?

YES

IC602

PWM data output signal

OK?

YES

IC701

FL±/FR± input signal

OK?

YES

+12 VA, +48 V

Power voltage OK?

NO NO

Check IC602.

Check IC801 & IC501.

Replace IC602.

IC702

SW1±/SW2± input signal

OK?

YES

Check SMPS.

Check IC602.

RL±/RR± input signal

IC703

OK?

YES

SPK_FL±/FR± output

Check L701, L702, L704, L705. Check L708, L709, L710. Check L711, L714, L715, L717.

IC701

OK?

YES YES YES

Replace IC701. Replace IC702. Replace IC703.

NO NO

IC702

SPK_SW output

OK?

SPK_RL±/RR± output

IC703

OK?

YES YES YES

Check speaker cable connection.

3-39

Page 67

WAVEFORMS

zwR

zwT

{|ytT

{|ytR

ZUY}

tv{jsvzl

tv{vwlu

svR

svT

zsR

zsT

1. WAVEFORM OF SP- & SP+ FOR DRIVING SPINDLE MOTOR

2. WAVEFORM OF SL- / SL+ FOR DRIVING SLED MOTOR

3. WAVEFORM OF TUR_M+ & TUR_MFOR DRIVING TRAY MOTOR

4. WAVEFORM OF LO- & LO+ FOR DRIVING PICKUP MODULE UP/DOWN MOTOR

3-40

Page 68

5. WAVEFORM OF RF SERVO

w~yj{ys

ZUZ} Oi lh {P

ilh{ w~y

joXa yZY^O {wZW[P

joYa xZWXGl  

khj t jsr

ilh{ ijr

ilh{kh{h

ilh{ syjr

6. WAVEFORM OF I2S SIGNAL TO BEAT BOX IC (IC801)

7. WAVEFORM OF BEAT BOX IC'S POWER SEQUENCE

8. WAVEFORM OF VFD GRID CURRENT DRIVER

3-41

Page 69

9. WAVEFORM OF USB_D±

3-42

Page 70

WIRING DIAGRAM

/&/'%*#

/&2+%-72

16P

/&59+6%*

18P

+21&+2*10'

%0

%0

%0

%0

670'4

%0

.+0'176

#WFKQ

(. (4 4459 594.

%0

%0

/#+02%$

10P15P

14P

%07

75$2%$

15P

25P

%08

%0

29P

%0

%0

%0

%0

(41062%$ 5/252%$

3-43 3-44

Page 71

BLOCK DIAGRAMS

pwvk

k

jrG

tljohupz

1. OVERALL BLOCK DIAGRAM

P/UP

A,B,C,D,E,F

m·V{y·

SLED

SPINs

LOAD

TUR_Ms

IC408

S3053

Motor

Drive

OPEN/CLOSE/LIMIT/UPDN/D_SENSE

IC502 SDRAM

IC503 FLASH

SPDO/SLDO/FOD/TRD

MOT_MUTE/CLOSE/OPEN

IC406

TUR ·

S8082

DRM_WEN/CAS/RAS/SEL/CLK/CKE

M00_15/A00_16

SF_DI/DO

SF_CS/SCK

MICOM_CS/DO/DI/ CLK/MAIN_RESET

IC407

BU9543KV

RF+ SERVO DSP

CD_RST

CD_DIN_DOUT

SUBSYQ;

IC501

MLC9800

MCS LOGIC

CD_R/W

BUSY; CD_16M

/LRCK/DATA

CD_MCK/BCK

USB_Ds

USB_RESET/SCL/SDA

CP_RESET/SCL/SDA

IPOD_PCTRL/RX/TX/DET/READAY

USB1

USB2

USB HUB

USB2512B

ADC_EDID_PWM_DATA/CLK

DAC_MCLK

ADC_DATA

DAC_BCK/LRCK

TUNER_SCLK/SDIO/RST/GPIO2/SEN

IC504 CP for

IPOD

IC200

CS5346

IPO L/R

POT_L/R

AUX_L/R

TUNER_L/R

iPod

IPO AUDIO L/R

IC251

NJM2794

POT. IN

AUX

TU101

TUNER

VFD

DIG301

MIC

AUDIO OUT

REMOCON/KEY/

IC100

EEPROM

VFD_STB/CLK/DO/RST

CLK/DATA

IC501

S4308

IC101

MICOM

LC87F085

LBT_RX/TX/RST

SPEANA

MIC_SIG

AUDIO OUT_L/R

LBT_DATA

LBT_CLK

IC801

FS503B

BEAT BOX

LBT_DATA

LBT_BCK

/LBT_LRCK

IC603

AK5358

DRV603

SDOUT1

AMP_OTW/SD/CLIP/READY

AMP_PDN

FL·

FR ·

IC602

RL·

PS9850

PWM

RR ·

SW1·

SW2

IC701

AMP IC

TAS5631

IC702

AMP IC

TAS5631

IC702

AMP IC

TAS5631

F/L

F/R

R/L

R/R

SW1

SW2

300Wx2

150Wx2

300Wx2

3-45 3-46

Page 72

2. SMPS BLOCK DIAGRAM

Rectifier Circuit

(Bridge,

CAPACITOR)

STR-A6252 for

Main Power

MAIN

TRANS

}mk

vwhtwVmhu

p w v kGV G|z iGV Gtw lnV Gk j kj

}mk

|Tj 

XY}

\U]}

[U\}

ZU^}h

wTj{ys

}rr

msORVTP

Filter

Section

(Varistor,

Resistor,

Line Filter

Thermistor)

Snubber

AMP Power &

UC3844 for

Main Power

FET

TRANS

MAIN

AMP

[_}

Digital

Power

AMP

3-47 3-48

Page 73

3. POWER BLOCK DIAGRAM

SMPS

+12V

+3.7VA

+5.6V

IC605

MIC AMP

S4308

D102 D104

D101

TJ3965D

IPOD PWR

LM39102D

KIA7027

IC601

LDO

IC505

278P33

IC203

IC201

IPOD AMP

NJM2794

IC100

EEPROM

24CS16

IC102

RESET

+5V

SPEANA

Q601

IC101

U_COM

ADC(MIC)

AK5358A

+3.3V

IC5058

TJ3965D

12VA

IC603

DRV603

IC701/702/703

POW AMP

TAS5631

IC604

TU101 TUNER YST996

+3.3V(CD)

PWR SENS

VCC33

FRONT LED

9EA x 2

IC103

IC602

PWM

PS9850

VOLUME LED

DIG301

VFD

D301

EXTENDERx2

9EA

RMC301

REMOCON

D302

WOOFER

+3.3V(CD)

+3.3V(RF)

+3.3V(USB)

FAN

Q701

IC509

KIA1112F

IC501

MCS

MLC9800

IC502

SDRAM

EM638165

IC506

CP2.0B

Q405

IC407

BU9543KV

Q406

IC504

USB HUB

USB2512A

VCC12

IC503

FLASH

MX25L8005

IC507

74AHC244

IC401

TJ3965D

+1.8V

FL·

+48V

DIG301

IC3U01

USB PWR

LM39102D

IC701/702/703

AUDIO AMP

TAS5631

ADC

IC202

CS5346

IC408

MOTOR

AM3053S

IC406

MOTOR

S8082

+3.3V(ADC)

74AHC244

3-49 3-50

IC806

IC807

+3.3V(BEAT)

IC801

BEAT BOX

FS-503B

IC803

BOOT

FLASH 16MB

IC805

BEAT SOURCE

FLASH 32MB

VCC12A

IC802

TJ3965D

Page 74

CIRCUIT DIAGRAMS

1. SMPS CIRCUIT DIAGRAM

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.

Warning

CAUTION:

Danger if fuse is incorrectly replaced.

Replace only with the type identical to fuse rating

and(or) model name described in main label.

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

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

EBY32630703 Rev 3.1

SMPS

2010.11.09

3-51 3-52

Page 75

2. MICOM CIRCUIT DIAGRAM

EBY60990001(#1) Rev 7.4

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

µ-COM

2011.05.12

3-53 3-54

Page 76

3. PWM CIRCUIT DIAGRAM

EBY60990001(#2) Rev 7.4

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

PWM

2011.05.12

3-55 3-56

Page 77

4. AMP CIRCUIT DIAGRAM

EBY60990001(#3) Rev 7.4

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

AMP

2011.05.12

3-57 3-58

Page 78

5. DSP CIRCUIT DIAGRAM

EBY60990001(#4) Rev 7.4

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

DSP

2011.05.12

3-59 3-60

Page 79

6. RF SERVO CIRCUIT DIAGRAM

EBY60990001(#5) Rev 7.4

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

RF SERVO

2011.05.12

3-61 3-62

Page 80

7. ADC CIRCUIT DIAGRAM

EBY60990001(#6) Rev 7.4

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

ADC

2011.05.12

3-63 3-64

Page 81

8. BEAT BOX CIRCUIT DIAGRAM

EBY60990001(#7) Rev 7.4

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

BEAT BOX

2011.05.12

3-65 3-66

Page 82

9. VFD CIRCUIT DIAGRAM

EBY61172601 Rev 2.1

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

VFD

2011.01.25

3-67 3-68

Page 83

10. VOLUME CIRCUIT DIAGRAM

EBY61172701 Rev 2.1

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

VOLUME

2011.01.25

3-69 3-70

Page 84

11. USB CIRCUIT DIAGRAM

EBY61172801 Rev 2.3

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

USB

2011.01.25

3-71 3-72

Page 85

12. IPOD CIRCUIT DIAGRAM

EBY60990101 Rev 3.2

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

IPOD

2010.11.09

3-73 3-74

Page 86

13. MIC CIRCUIT DIAGRAM (OPTIONAL PART)

EBY60990701 Rev 3.2

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

MIC

2010.11.09

3-75 3-76

Page 87

CIRCUIT VOLTAGE CHART

1. HOW TO CHECK THE VOLTAGE

2. MAJOR ICs

No.

LC87F085NC8A

Location /

Description

IC501

MLC9800

IC101

IC100

S-24CS16

IC602

PS9850

IC603

AK5358

IC605

S4308

IC604

DRV603

Turn the SMPS board over with cable connected and check the voltage.

Supply Voltage

Pin No.

13,47,94-VDD12 1.2V 1.08~1.32V 1.18V

30,51,84,113-IO-

VDD33

120-PLL1VDD12 1.2V 1.08~1.32V 1.18V

124-PLL2VDD12 1.2V 1.08~1.32V 1.18V

122-PLL3VDD12 1.2V 1.08~1.32V 1.18V

115-USBVDD33 3.3V 3.0~3.6V 3.26V

14,48,95-VSS12 3.3V 3.0~3.6V 3.26V

3,52,85,109,114-IO-

VSS33

119-PLL1VSS12 3.3V 3.0~3.6V 3.26V

123-PLL2VSS12 1.2V 1.08~1.32V 1.18V

121-PLL3VSS12 1.2V 1.08~1.32V 1.18V

3-AVSS33 3.3V 3.0~3.6V 3.26V

118- USBVSS33 3.3V 3.0~3.6V 3.26V

VDD1,VDD2,

VDD3,VDD4

VCC 3.3V 2.7~5.5V 3.37V

VDD_IO 3.3V 2.97~3.63V 3.31V

VDD_CORE 1.2V 1.08~1.32V 1.25V

VDD_VIN1 3.3V 2.20~3.30V 3.30V

VDD_VIN2 3.3V 2.20~3.30V 3.30V

VDD_A 1.2V 1.08~1.32 1.25V

VA 5V 6.0V MAX 5.11V

VD 3.3V 4.6V MAX 3.31V

VCC 12V 4.5~12V 11.25V

VDD 5V 3~5.5V 5.1V

Source Spec / Rating Measured voltage

3.3V 3.0~3.6V 3.26V

1.2V 1.08~1.32V 1.18V

3.3V 2.8~5.5V 3.37V

No.

Location /

Description

IC701

TAS5631

IC502

EM638165TS-6G

IC503

M25L1605D2I-12G

IC507

TC74VHC244FT

IC506

CP Chip

IC504

USB2512A

IC505

278R33

IC407

BU9543KV

IC408

S3053

IC406

S8082

IC202

CS5346

IC203

LM39102D

IC201

NJM2794RB2

IC204

LM39102D

IC801

FS-503B

IC803

M25L1605D2I-12G

IC806

TC74VHC244FT

IC807

M25L1605D2I-12G

IC807

TC74VHC244FT

IC807

KIA1112F

IC301

BU2090

IC302

BU2090

IC3U01

LM3912D

Supply Voltage

Pin No.

PVDD_X 48V 25~52.5V 47.7V

GVDD_X 12V 10.8~13.2V 11.91V

VDD 12V 10.8~13.2V 11.91V

VDD,VDDQ 3.3V 3.0~3.6V 3.27V

VDD 3.3V 4.6V MAX 3.27V

VCC 3.3V 2.0~5.5V 3.27V

VCC 3.3V 7.0V MAX 3.27V

VDD33 3.3V 3.0~3.6V 3.26V

VOUT 3.3V - 3.28V

VDD 3.3V 2.7~3.6V 3.27V

VCORE 1.5V 1.4~1.65V 1.58V

VCC1, VCC2 5V 4.3~13.2V 5.10V

SVCC, PVCC 5V 4.3~13.2V 5.10V

VA 5V 4.75~5.25V 5.11V

VD 3.3V 3.13~3.47V 3.27V

VLS 3.3V 3.13~3.47V 3.27V

VLC 3.3V 3.13~3.47V 3.27V

VOUT 5V - 5.12V

VCC 12V 4.3~13V 11.93V

VOUT 5V - 5.13V

VDDK 1.2V 1.4V MAX 1.19V

VDDE 3.3V 4.0V MAX 3.27V

VDD 3.3V 4.6V MAX 3.27V

VCC 3.3V 2.0~5.5V 3.27V

VDD 3.3V 4.6V MAX 3.27V

VCC 5V 2.0~5.5V 5.12V

VOUT 1.2V - 1.19V

VDD 3.3V 7.0V MAX 3.66V

VOUT 5V - 5.11V

Source Spec / Rating Measured voltage

3-77 3-78

Page 88

3. CAPACITORS ON MAIN BOARD 4. CAPACITORS ON SMPS BOARD

No. Location Value Capacitor (uF) Voltage Spec. Measured voltage

01 C111 47uF 16V 3.37V

02 C145 2.2uF 16V 3.37V

03 C124 1000uF 6.3V 3.38V

04 C109 1000uF 6.3V 3.38V

05 C808 47uF 16V 1.19V

06 C529 100uF 16V 3.30V

07 C530 470uF 16V 5.66V

08 C531 470uF 16V 5.65V

09 C533 470uF 16V 3.28V

10 C706 10uF 16V 11.92V

11 C746 10u 16V 11.92V

12 C786 10uF 16V 11.92V

13 C713 470uF 100V 47.7V

14 C734 470uF 100V 47.7V

15 C753 470uF 100V 47.7V

16 C774 470uF 100V 47.7V

17 C793 470uF 100V 47.7V

18 C784 470uF 100V 47.7V

19 C527 47uF 16V 1.19V

20 C550 47uF 16V 1.19V

21 C570 10uF 16V 3.27V

22 C525 47uF 16V 3.27V

23 C482 100uF 16V 1.65V

24 C462 47uF 16V 3.27V

25 C467 3.3uF 50V 1.65V

26 C492 47uF 16V 3.27V

27 C405 470u 16V 1.57V

28 C4H6 100uF 6.3V 1.57V

29 C406 100uF 6.3V 3.27V

30 C485 220uF 16V 5.11V

31 C221 100uF 16V 3.28V

32 C235 10uF 16V 5.7V

33 C231 47uF 16V 5.1V

34 C221 100uF 16V 5.1V

35 C210 10uF 16V 2.55V

36 C660 47uF 16V 3.31V

37 C657 47uF 16V 5.12V

38 C655 10uF 16V 2.56V

39 C681 1uF 50V .3V

40 C679 100uF 16V 11.25V

41 C676 22uF 16V 1.96V

42 C122 100uF 16V 3.31V

43 C620 100uF 6.3V 1.25V

44 C621 1000uF 6.3V 3.30V

45 C682 1000uF 6.3V 3.30V

46 C601 100uF 16V 3.31V

47 C3U25 100uF 16V 5.1V

No. Location

01 C903 1000uF 315V 122.3V 190V

02 C904 1000uF 315V 123.9V 180.7V

03 C905 47uF 450V 245.9V 370.1V

04 C912 47uF 50V 18.47V 18.59V

05 C914 47uF 50V 12.68V 13.8V

06 C908 47uF 50V 15.34V 15.33V

07 C931 330uF 16V 4.81V 4.8V

08 C932 100uF 50V 31.96V 31.98V

09 C933 1000uF 16V 5.75V 5.75V

10 C935 1000uF 25V 12.63V 12.62V

11 C942 100uF 16V 11.99V 11.98V

12 C953 2200uF 80V 47.9V 48.1V

Value Capacitor

(uF)

Voltage Spec.

100V-10% 240V/50Hz+10%

Measured voltage Measured voltage

3-79 3-80

Page 89

PRINTED CIRCUIT BOARD DIAGRAMS

1. MAIN P.C.BOARD

(TOP VIEW)

3-81 3-82

Page 90

MAIN P.C.BOARD

(BOTTOM VIEW)

3-83 3-84

Page 91

2. SMPS P.C.BOARD

NOTE) Warning

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

Rev 4.1

3-85 3-86

Page 92

3. VFD P.C.BOARD

(BOTTOM VIEW)

EAX64004201 Rev 2.3

3-87 3-88

Page 93

4. VOLUME P.C.BOARD

3-89 3-90

Page 94

5. USB P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

6. IPOD P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

7. MIC P.C.BOARD (OPTIONAL PART)

3-91 3-92

Page 95

MEMO MEMO

3-93 3-94