LG HDR-1000, HDR-899 Service manual

DVB-T/HDD/DVD RECORDER

SERVICE MANUAL

MODELS : HDR899/1000

CAUTION

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

MODELS : HDR899/1000

SERVICE MANUAL

Website http://biz.lgservice.com

Internal Use Only

CONTENTS

SECTION 1.........SUMMARY

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

SECTION 3.........ELECTRICAL

SECTION 4.........RS-06A LOADER PART

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

LGE Internal Use Only

SECTION 1

SUMMARY

CONTENTS

NEW FUNCTIONS OF HDD/DVD RECORDER .................................................................................1-3

PRODUCT SAFETY SERVICING GUIDELINES FOR HDD/DVD RECORDER PRODUCTS

SERVICING PRECAUTIONS....................................................................................................................1-5

• GENERAL SERVICING PRECAUTIONS

• INSULATION CHECKING PRODEDURE

• ELECTROSTATICALLY SENSITIVE (ES) DEVICES

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

UPGRADE THE MAIN & LOADER PROGRAM.................................................................................1-7

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

..............1-4

LGE Internal Use Only

1-2

Only for training and service purposes

NEW FUNCTIONS OF HDD/DVD RECORDER

• HDMI

HDMI IS THE SPECIFICATION FOR THE HIGH-DEFINITION MULTIMEDIA INTERFACE. HDMI IS PROVIDED FOR TRANSMITTING DIGITAL TELEVISION AUDIOVISUAL SIGALS FROM HDD-DVD RECODER TO TELEVISION SETS, OTHER VIDEO DISPLAYS. HDMI CAN CARRY HIGH QUALITY MULTI-CHANNEL AUDIO DATA AND CAN CARRY ALL STANDARD AND HIGH DEFINITION CONSUMER ELECTRONICS VIDEO FORMATS. CONTENT PROTECTION TECHNOLOGY IS AVAILABLE. HDMI CAN ALSO CARRY CONTROL AND STATUS INFORMATION IN BOTH DIRECTIONS.

<< OPERATING >>

AUDIO, VIDEO AND AUXILIARY DATA IS TRANSMITTED ACROSS THE THREE TMDS DATA CHANNELS. THE VIDEO PIXEL CLOCK IS TRANSMITTED ON THE TMDS CLOCK CHANNEL AND USED BY THE RECEIVER AS A FREQUENCY REFERENCE FOR DATA RECOVERY ON THE THREE TMDS DATA CHANNELS. VIDEO DATA IS CARRIED AS A SERIES OF 24-BIT PIXELS ON THE THREE TMDS DATA CHANNELS. TMDS ENCODING CONVERTS THE 8BIT PER CHANNEL INTO THE 10BIT DC-BALANCED. VIDEO PIXEL RATES CAN RANGE FROM 25MHz TO 165MHz. THE VIDEO PIXELS CAN BE ENCODED IN EITHER RGB, YCbCr 4:4:4 OR YCbCr 4:2:2 FORAMTS. IN ALL THREE CASES, UP TP 24 BITS PER PIXEL CAN BE TRANSFERRED.

FAST DUBBING

DUBBING MEANS A COPYING FUNCTION BETWEEN HDD TO DVD DISCS. COPYING BETWEEN HDD TO DVD IS A COMPLETELY DIGITAL PROCESS AND THEREFORE INVOLVES NO LOSS OF QUALITY IN THE AUDIO OR VIDEO. SO THIS MEANS THAT COPYING CAN BE CARRIED OUT AT THE MAXIMUM SPEED POSSIBLE.

<< DUBBING SPEED RATE >>

NORMAL DUBBING : SPEED RATE MAX X1 FAST DUBBING : SPEED RATE MAX X4

WHEN FAST DUBBING FROM HDD TO DVD, THE SPEED OF COPYING DEPENDS ON THE RECODING MODE AND THE KIND OF USING THE DVD DISC, AND THIS MODE IS NOT AVAILABLE FOR EDITED VIDEO TITLE IN HDD. WHEN FAST DUBBING FROM DVD TO HDD, ONLY AVAILABLE WHEN COPYING VR MODE DISC(DVD-RW) TO HDD, AND ONLY NORMAL DUBBING AVAILABLE WHEN COPYING VIDEO MODE DISC(DVD+RW/RW, DVD-R) TO HDD.

1-3

LGE Internal Use Only

PRODUCT SAFETY SERVICING GUIDELINES FOR HDD/DVD RECORDER PRODUCTS

IMPORTANT SAFETY NOTICE

This manual was prepared for use only by properly trained audio-video service technicians. When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.

Special components are also used to prevent x-radiation, shock and fire hazard. These components are indicated by the letter “x” included in their component designators and are required to maintain safe performance. No deviations are allowed without prior approval by LG Corporation. Circuit diagrams 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.

CAUTION

tomized installations without manufacturer’s approval. Unauthorized modifications will not only void the warranty, but may lead to property damage or user injury.

Service work should be performed only after you are thoroughly familiar with these safety checks and servicing guidelines.

: Do not attempt to modify this product in any way. Never perform cus-

GRAPHIC SYMBOLS

The exclamation point within an equilateral triangle is intended to alert the service personnel to important safety information in the service literature. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the service personnel to the presence of noninsulated “dangerous voltage” that may be of sufficient magnitude to constitute a risk of electric shock. The pictorial representation of a fuse and its rating within an equilateral triangle is intended to convey to the service personnel the following fuse replacement caution notice: CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKED NEAR EACH FUSE.

SERVICE INFORMATION

While servicing, use an isolation transformer for protection from AC line shock. After the original service problem has been corrected, make a check of the following:

FIRE AND SHOCK HAZARD

1. Be sure that all components are positioned to avoid a possibility of adjacent component shorts. This is especially important on items trans-ported to and from the repair shop.

2. Verify that all protective devices such as insulators, barriers, covers, shields, strain reliefs, power supply cords, and other hardware have been reinstalled per the original design. Be sure that the safety purpose of the polarized line plug has not been defeated.

3. Soldering must be inspected to discover possible cold solder joints, solder splashes, or sharp solder points. Be certain to remove all loose foreign particles.

4. Check for physical evidence of damage or deterioration to parts and components, for frayed leads or damaged insulation (including the AC cord), and replace if necessary.

5. No lead or component should touch a high current device or a resistor rated at 1 watt or more. Lead tension around protruding metal surfaces must be avoided.

6. After reassembly of the set, always perform an AC leakage test on all exposed metallic parts of the cabinet (the channel selector knobs, antenna terminals, handle and screws) to be sure that set is safe to operate without danger of electrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by a .15 mfd 150V AC type capacitor between a known good earth ground water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC voltage across the combination of 1500 ohm resistor and .15 mfd capacitor. Reverse the AC plug by using a non-polarized adaptor and repeat AC voltage measurements for each exposed metallic part. Voltage measured must not exceed 0.75 volts RMS. This corresponds to 0.5 milliamp AC. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.

TIPS ON PROPER INSTALLATION

1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelf space over, or close to, a heat duct, or in the path of heated air flow.

2. Avoid conditions of high humidity such as: outdoor patio installations where dew is a factor, near steam radiators where steam leakage is a factor, etc.

3. Avoid placement where draperies may obstruct venting. The customer should also avoid the use of decorative scarves or other coverings that might obstruct ventilation.

4. Wall- and shelf-mounted installations using a commercial mounting kit must follow the factory-approved mounting instructions. A product mounted to a shelf or platform must retain its original feet (or the equivalent thickness in spacers) to provide adequate air flow across the bottom. Bolts or screws used for fasteners must not touch any parts or wiring. Perform leakage tests on customized installations.

5. Caution customers against mounting a product on a sloping shelf or in a tilted position, unless the receiver is properly secured.

6. A product on a roll-about cart should be stable in its mounting to the cart. Caution the customer on the hazards of trying to roll a cart with small casters across thresholds or deep pile carpets.

7. Caution customers against using extension cords. Explain that a forest of extensions, sprouting from a single outlet, can lead to disastrous consequences to home and family.

LGE Internal Use Only

1-4

Only for training and service purposes

SERVICING PRECAUTIONS

CAUTION: Before servicing the HDD / DVD RECORDER covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE: if unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions in this publications, always follow the safety precautions. Remember Safety First :

General Servicing Precautions

1. Always unplug the HDD / DVD RECORDER AC power cord from the AC power source before: (1) Removing or reinstalling any component, circuit board,

module, or any other assembly.

(2) Disconnecting or reconnecting any internal electrical

plug or other electrical connection.

(3) Connecting a test substitute in parallel with an electrolyt-

ic capacitor. Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard.

2. Do not spray chemicals on or near this HDD / DVD RECORDER or any of its assemblies.

3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication of contacts is not required.

4. Do not defeat any plug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped.

5. Do not apply AC power to this HDD / DVD RECORDER and / or any of its electrical assemblies unless all solidstate device heat sinks are correctly installed.

6. Always connect the test instrument ground lead to an appropriate ground before connecting the test instrument positive lead. Always remove the test instrument ground lead last.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES 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 ES 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 ES 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 ES devices.

5. Do not use freon-propelled chemicals. These can generate an electrical charge sufficient to damage ES devices.

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

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

Insulation Checking Procedure

Disconnect the attachment plug from the AC outlet and turn the power on. Connect an insulation resistance meter (500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive parts (Note 1) should be more than 1Mohm. Note 1 : Accessible Conductive Parts include Metal panels, Input terminals, Earphone jacks,etc.

Caution: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Normally 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 ES device.)

1-5

LGE Internal Use Only

SERVICE INFORMATION FOR EEPROM IC SETTING

1. Please the CLEAR button on the remocon together with OPEN the Front Panel about 6 sec.

The picture on OSD will be bellow ;

Model :

Disc Read Time

DVD 018 Sec OK CD 021 Sec NG

OP1 : 00 00000000 M : 10.013 OP2 : 00 00000000 E : FF(OR) OP3 : 00 00000000 OP4 : 00 00000000 OP5 : 00 00000000 OP6 : 00 00000000 OP7 : 00 00000000 Write : OK OP8 : 00 00000000 E x i t : MP OP9 : 00 00000000 Move : < > OPA : 00 00000000 E d i t :

2. To MOVE from OP! to another option. Please button on the remote control.

3. To CHANGE the Option Code. Please button on the remote control.

4. To APPLY the Option Code. After change the option press ENTER button on remote control.

5. To INITIALIZE the system. Press CLEAR button on the remotecontrol together with OPEN on the Front panel about 2sec.

6. To exit from the Option Code menu without Initialize the system. Just turn off the power and turn on again.

LGE Internal Use Only

1-6

Only for training and service purposes

UPGRADE THE MAIN & LOADER PROGRAM

1. MAKING UPGRADE DISC

1) Do Physical format as ISO9660 or JOLIET file system

2) Don’t care about the CD Volume label

3) Write RH300 B_E & LOADER file on Root

4) Write I_O file on Root

Note) You can’t write steps 3 and 4 on the same disc.

Use the different disc to write another step.

* OPTIONAL PARTS

1) B_E LG_RH300_UPDATE_PAL.ROM

2) LOADER DvdS617.rs6, Yas617.din

3) I_O io_micom_update.hex

2. UPGRADE FLASH (MAIN & LOADER) and I_O

1) Put Upgrde DISC on the Set

2) After Disc Reading, You can see below screen

3) Press ENTER (or OK) KEY. You can see both current and upgrade version.

4) Press PLAY KEY. Start upgrading.

5) After upgrading, Automatically open tray. Eject the Disc. Reboot the Set

6) Put I_O update disc and repeat 1) ~ 5)

* OPTIONAL PARTS

1) MAIN ONLY B_E UPGRADE

2) LOADER ONLY LOADER UPGRADE

3) ALL B_E & LOADER UPGRADE

1-7

LGE Internal Use Only

SPECIFICATIONS

• GENERAL

Power requirements AC 200-240V, 50/60 Hz Power consumption 30W Dimensions (approx.) 430 X 49 X 275mm (w x h x d) without foot Net weight (approx.) 4kg Operating temperature 5°C to 35°C Operating humidity 5% to 65% Television system PAL I, B/G, I/I, SECAM D/K, K1 color system Recording format PAL

• RECORDING

Recording format DVD Video Recording, DVD-VIDEO Recordable media HDD (320GB), DVD-RW, DVD-R, DVD+RW,

DVD+R, DVD+R (Double Layer), DVD-RAM

Recordable time DVD (4.7GB): Approx. 1 hour (XP mode),

2 hours (SP mode), 4 hours (LP mode), 6 hours (EP mode), 14 hours (MLP mode)

DVD+R DL (8.5GB): Approx. 3hours (XP mode),

3.8 hours (SP mode), 7.3 hours (LP mode),

9.1 hours (EP mode), 21 hours (MLP mode)

HDD (320GB, MPEG2 Recording):

Approx. 85 hours (XP mode), 165 hours (SP mode), 323 hours (LP mode), 456 hours (EP mode), 935 hours (MLP mode)

Video recording format

Sampling frequency 27MHz Compression format MPEG2 (VBR supported)

Audio recording format

Sampling frequency 48kHz Compression format Dolby Digital

• PLAYBACK

Frequency response DVD (PCM 48kHz): 8Hz to 22kHz,

CD: 8Hz to 20kHz

DVD (PCM 96kHz): 8Hz to 44kHz Signal-to-noise ratio More than 90dB (AUDIO OUT connector) Harmonic distortion Less than 0.02% (AUDIO OUT connector)

• INPUTS

Dynamic range More than 95dB (AUDIO OUT connector) ANTENNA IN Antenna input, 75ohms VIDEO IN 1.0 Vp-p 75ohms, sync negative, RCA jack x 1 / SCART x 2 AUDIO IN 2.0 Vrms more than 47kohms, RCA jack (L, R) x 1 / SCART x 2 DV IN 4 pin (IEEE 1394 standard) USB IN 4 pin (USB 1.1 standard)

• OUTPUTS

VIDEO OUT 1Vp-p 75Ω, sync negative, SCART x 2 S-VIDEO OUT (Y) 1.0V (p-p), 75Ω, sync negative,

Mini DIN 4-pin x 1(C) 0.3V (p-p) 75Ω COMPONENT VIDEO OUT (Y) 1.0V (p-p), 75Ω, sync negative,

RCA jack x 1, (PB)/(PR) 0.7V (p-p), 75Ω, RCA jack x 2 HDMI video/audio output 19 pin (HDMI standard, Type A) Audio output (digital audio) 0.5V (p-p), 75Ω, RCA jack x 1 Audio output (optical audio) 3V (p-p), Optical connector x 1 Audio output (analog audio) 2Vrms (1kHz, 0dB), 600Ω, RCA jack (L, R) x 2 / SCART x 2

LGE Internal Use Only

1-8

Only for training and service purposes

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

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

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

2. DECK MECHANISM SECTION (RS-06A).................................................................................................2-3

3. PACKING ACCESSORY SECTION...........................................................................................................2-4

2-1

LGE Internal Use Only

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION

462

OPTIONAL PARTS

8

250

46

A52

G

465 5 46

300

465

70 4

A44

261

0 26

462

A54

468

CABLE7

CABLE10

261

A26

104

A54A

HDMI

468

BOARD

253

468

I/O BOARD

261

320

A

8

1

46

26

A47

SMPS

468

C

8 46

G

E

A53

F

468

F

101

ABLE11 C

A

CABLE6

8 46

261

471

261

410

46 A

ABLE5 C

468

452

275

CABLE1

264

452

A43A

275

285

TIMER

CABLE2

286

73 2

4 27

50 A

D

281

E

MAIN

BOARD

D

B

452

B

452

KEY

A43

280

LGE Internal Use Only

2-2

Only for training and service purposes

2. DECK MECHANISM SECTION (RS-06A)

1431

1001

RS-06A(DR-11H)

1003

1026

1433

1016

1017

1002

1013

A001

A006

1041

1437

1432

1011

1020

1030

1033

1032

1025

1432

1434

1034

1437

1038

1432

1036

1015

1012

1019

1018

A

0

5

1047

1043

1045

2-3

1046

A46A

M

a

in

C

.

B

.

A

1439

LGE Internal Use Only

3. PACKING ACCESSORY SECTION

OPTIONAL PARTS

810 Accessory Assembly

808 Battery

900 Remote Control

Instruction Ass'y

801

803 Packing

806 RCA Plug(Black)

Plug Ass'y 1way

811

812

Plug Ass'y 2way

821 SCART Cable

804 Bag

803 Packing

Box

802

LGE Internal Use Only

2-4

Only for training and service purposes

SECTION 3

ELECTRICAL

CONTENTS

ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER SUPPLY ON SMPS BOARD .............3-2

2. POWER SUPPLY ON I/O BOARD ...................3-4

3. SYSTEM CIRCUIT PART ..................................3-9

4. DISC NOT RECOGNIZED.................................3-9

5.

WHEN PLAYING DISC, NO AUDIO OUTPUT

6. NO OPTICAL/DIGITAL OUTPUT ....................3-11

7. NO TUNER AUDIO OUTPUT .........................3-12

8. NO EXTERNAL AUDIO INPUT .......................3-13

9. NO RGB/COMPONENT VIDEO SIGNAL

WHEN PLAY DISC ...........................................3-14

10. NO COMPOSITE/S-VIDEO SIGNAL

WHEN PLAY DISC............................................3-15

11. NO TV, EXTERNAL INPUT VIDEO

SIGNAL..............................................................3-16

12. NO DV (IEEE1394)

INPUT (VIDEO/AUDIO) SIGNAL.....................3-17

...........3-2

..........3-10

WAVEFORMS..........................................................3-18

1. SMPS BLOCK ..................................................3-18

2. SYSTEM BLOCK .............................................3-20

3. VIDEO BLOCK (COLOR BAR INPUT)...........3-23

4. AUDIO BLOCK (1kHz SINEWAVE INPUT)....3-24

5. SERIAL INTERFACE BLOCK

(BETWEEN MAIN AND I/O)............................3-25

6. TUNER BLOCK ................................................3-26

7. HDMI BLOCK ...................................................3-27

WIRING CONNECTION DIAGRAM...............3-28

1. WIRING CONNECTION DIAGRAM 1 ............3-28

2. WIRING CONNECTION DIAGRAM 2 ............3-29

3. WIRING CONNECTION DIAGRAM 3 ............3-30

BLOCK DIAGRAMS.............................................3-31

1. VERALL BLOCK DIAGRAM............................3-31

2. SMPS BLOCK DIAGRAM ...............................3-32

3. POWER MAIN BLOCK DIAGRAM .................3-33

4. POWER I/O BLOCK DIAGRAM......................3-34

5. A/V BLOCK DIAGRAM ....................................3-35

6. AUDIO OUT BLOCK DIAGRAM .....................3-36

7. HDMI BLOCK DIAGRAM ................................3-37

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

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

2. SMPS 2 CIRCUIT DIAGRAM..........................3-41

3. MPEG CIRCUIT DIAGRAM.............................3-43

4. FLASH/DDR/DV CIRCUIT DIAGRAM............3-45

5. ATAPI, HDMI & USB CIRCUIT DIAGRAM.....3-47

6. I/O, µ-COM CIRCUIT DIAGRAM ....................3-49

7. DECODER & MIC CIRCUIT DIAGRAM.........3-51

8. SCART/RCA CIRCUIT DIAGRAM..................3-53

9. HDMI CIRCUIT DIAGRAM ..............................3-55

10. TIMER CIRCUIT DIAGRAM

11. KEY CIRCUIT DIAGRAM (8 & 9 TOOLS) ......3-59

(8 & 9 TOOLS)

...3-57

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

PRINTED CIRCUIT BOARD DIAGRAMS...3-65

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

2. I/O P.C.BOARD.................................................3-67

3. POWER P.C.BOARD .......................................3-71

4. TIMER & KEY P.C.BOARD..............................3-73

5. HDMI P.C.BOARD ............................................3-75

3-1

LGE Internal Use Only

ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER SUPPLY ON SMPS BOARD

No 5.3VA

YES

Is the F101 normal? Replace the F101 (Use the same fuse)

YES

Is the BD101 normal? Replace the BD101

YES

Is the TH01 normal? Replace the TH01

YES

NO

Is the Vcc

(10V - 17V) supplied to

NO

Is the D102 normal?

IC101 Pin 6?

NO

YES

Is the D128 normal? Replace the D128

YES

Is there about 2.5V at the

NO

Check or replace the D102

Replace the IC103

IC103 Pin 1?

YES

Is the D121 normal? Replace the D121

YES

Is the D122 normal? Replace the D122

YES

Is the D125 normal? Replace the D125

YES

Is the D124 normal? Replace the D124

NO

Is the D127 normal?

Is the D126 normal? Replace the D126

Power line of I/O PCB is short

LGE Internal Use Only

YES

NO

3-2

Replace the D127

Only for training and service purposes

No 5V for HDD & DVD drive

YES

Is there about 5.5V at

the IC156 Pin 1?

YES

Is there about 4V ~ 5V at

the IC156 Pin 4?

YES

Check the IC156 and replace

No 12V for HDD & DVD drive

YES

Is there about 13.5V at

the IC155 Pin 1?

NO

Check D125 and replace

Check the “PWR CTL‘H’”

signal from µ-COM

Check D124 and replace

YES

Is there about 4V ~ 5V at

the IC155 Pin 4?

YES

Check the IC155 and replace

NO

3-3

Check the “PWR CTL ‘H’”

signal from µ-COM

LGE Internal Use Only

2. POWER SUPPLY ON I/O BOARD

No 12VT

YES

Is the Vcc (14V) supplied to

Q164 collector?

YES

Is there about 12.5V at

ZD151 & Q164 base?

YES

Is the Vcc (33V) supplied

to Q162 emiter?

YES

Is there about 0V at

Q162 base?

YES

NO

Check D124 on SMPS

board and replace

Check Q164 and replace

Check D126 on SMPS

board and replace

Check Q162 and replace

Is there about 5V at R170

and 0.7V at Q156 base?

Check Q156 and replace

LGE Internal Use Only

YES

NO

3-4

Check the “TIMER_H”

signal from µ-COM

Only for training and service purposes

No 5VT

YES

Is the Vcc (5.3V)

supplied to Q155 emiter?

YES

Is there about 0V

at D152 and

Q152 vollector?

YES

Is there about 5V

at R180 and 0.7V

at Q152 base?

YES

Check Q152 and replace

No 33VT

NO

Check 5.3VA on SMPS board

Check Q155 and replace

Check the “TIMER H”

signal from µ-COM

YES

Is the Vcc (33V)

supplied to Q161 emiter?

YES

Is there about 0V at

Q152 collector?

YES

Is there about 5V

at R180 and 0.7V

at Q152 base?

YES

Check Q152 and replace

NO

3-5

Check D126 on SMPS

board and replace

Check Q161 and replace

Check the “TIMER H”

signal from µ-COM

LGE Internal Use Only

No 5.0VD

YES

Is there about 5.3V at

the IC153 Pin 1?

YES

Is there about 4V ~ 5V at

the IC153 Pin 4?

YES

Check the IC153 and replace

No 2.5V

YES

Is there about 3V ~ 3.8V

at the IC151 Pin 1?

YES

Is there about 4V ~ 5V at

the IC151 Pin 4?

NO

Check 5.3VA on SMPS board

Check the “PWR CTL H”

signal from µ-COM

Check D154 and

D127 on SMPS board

Check the “PWR CTL H”

signal from µ-COM

Check the IC151 and replace

Is there about 3.8V at

the IC152 Pin 1?

Is there about 4V ~ 5V at

the IC152 Pin 4?

Check the IC152 and replace

LGE Internal Use Only

YES

No 3.3V

YES

NO

3-6

Check D127 on SMPS

board and replace

Check the “PWR CTL H”

signal from µ-COM

Only for training and service purposes

No SW_5.3VA

YES

Is the Vcc (5.3V)

supplied to Q158 emiter?

YES

Is there about 0V

at R179 and R156?

YES

Check Q158 and replace

No SW_FD(+)

YES

Is the Vcc (FD+) supplied

to Q163 collector?

YES

Is there about 5.3V at

R184 and Q153 collector?

NO

Check 5.3VA on SMPS board

Check the “STANBY H”

signal from µ-COM

Check D121 on SMPS

board and replace

Check Q163 and replace

YES

Is the VCC (5.3V)

supplied to Q153 emiter?

YES

Is there about 0V

at Q153 base?

YES

Check Q153 and replace

NO

3-7

Check 5.3VA on SMPS board

Check the “STANBY H”

signal from µ-COM

LGE Internal Use Only

No 1.8V

YES

Is the Vcc (3.3V)

supplied to Pin 3 IC155?

YES

There is 1,8V at IC155 Pin 2, 4

No 1.25V

YES

Is there about 5.3V at

the IC154 Pin 2?

YES

Is there about 4V ~ 5V at

the IC154 Pin 5?

NO

Check 3.3V power supply

IC155 defect

Check 5.3VA on SMPS board

Check the “PWR CTL H”

signal from µ-COM

Check the IC154 and replace

LGE Internal Use Only

YES

3-8

Only for training and service purposes

3. SYSTEM CIRCUIT PART

“Please wait” displayed

continue at power on

YES

IC1306 Pin 5 : ?

(/HOST-RESET)

YES

X1101 : Clock oscillated?

(13.5MHz)

YES

AR1105 Pin 3 : ?

IC1201 Pin 32 : ?

YES

R1173, R1174 : ?

4. DISC NOT RECOGNIZED

NO

Check PVM02 Pin 25 IC 701 Pin 19

Replace X1101

Check IC1201 (Flash memory) & IC1101

IC1101 defect

DISC not recognized

Check driver power?

5V, 12V

YES

Check ATAPI connector

YES

Check loader

NO

3-9

Check SMPS

Change MEDIA TEST

LGE Internal Use Only

5. WHEN PLAYING DISC, NO AUDIO OUTPUT

When playing DISC, no Audio output

IC904 Pin 14, 15 :

Is there a signal?

YES

NO NO

Check

IC904 Pin 5, 6,

7, 8 : .

Pin 3, 4 (Host CLK

& DATA) :

YES

IC1101 defect

Check

Q808, Q809, Q810, Q801

Check

IC902 Pin 8

(12VT)

YES

Replace IC902

NO

IC904 Pin 1, 16

(Z_MUTE R/L) : .

IC701 Pin 24

(A_MUTE_L) :

NO

IC902 Pin 1, 7 : Is there a signal

IC801 Pin 34, 35,

37, 38 : Is there

a signal?

YES

Check

IC904 Pin 11 (5VD)

YES

Replace IC904

Check

NO NO

IC801 Pin 14

(12V) Pin 30 (5, 3V)

Pin31, 32

(SCL, SDA) :

Replace

IC801

LGE Internal Use Only

L804, L808,

L820, L821 :

Is there a signal?

YES

Check

cable connections &

TV audio mute.

3-10

Only for training and service purposes

6. NO OPTICAL/DIGITAL OUTPUT

R1107 : .

Is there a signal?

PVM02 Pin 1 (SPDIF_OUT) : .

YES

Check

YES

R832 : .

Is there a signal?

YES YES

Check JK803 Pin 2 (5V)

YES YES

Check JK803 &

optical cable connection

C839 : .

Is there a signal?

BD803 : .

Is there a signal?

Check JK802 &

RCA cable connection

3-11

LGE Internal Use Only

7. NO TUNER AUDIO OUTPUT

TU701 Pin 16 (SIF) :

Is there a signal?

YES

IC901 Pin 106, 107

Is there a signal?

YES

IC801 Pin 40, 41 :

Is there a signal?

NO

Pin 30 (5, 3V) Pin 31, 32

Check

IC801 Pin 14 (12V)

(SCL, SDA) :

NO

Replace IC801

YES

IC901 Pin 98,

99, 100, 95 (Ain_D0,

AIN_SCLK, AIN_FSYNC,

AIN_MCLK) : Is there

a signal?

YES

When playing DISC,

no audio output

NO

YES

Check Pin 51/

RST_SAA7138

YES

X901 (24.576MHz)

oscillated?

YES

R906, R909

(SCL/SDA)

YES

IC901 defect

NO

Check IC1302

reset circuit

Change X901

Check IC901 power

3.3V & 1.8V

LGE Internal Use Only

3-12

Only for training and service purposes

8. NO EXTERNAL AUDIO INPUT

< AV3 > < AV1/AV2>

C9F3, C9F4 :

Is there a signal?

YES

NO

IC801 pin 2, 3, 5, 6 :

Check

cable connections

& input signal.

IC803 Pin 40, 41 :

AIN_SCLK, AIN_FSYNC,

Is there a signal?

YES

Is there a signal?

YES

IC901

Pin 98, 99,100,

95 (Ain_D0,

AIN_MCLK) :

Is there

a signal?

IC801 Pin 14 (12V)

NO

Pin 30 (5, 3V)

Pin 31, 32

(SCL, SDA) : .

NO

Check Pin 51/

RST_SAA7138

Check

NO

Replace

IC801

Check

IC1302 reset

circuit

YES

When playing DISC,

no audio output

YES

X901

(24.576MHz)

oscillated?

YES

R906, R909

(SCL/SDA)

YES

IC901 defect

NO

Change X901

Check

IC901 power

3.3V & 1.8V

3-13

LGE Internal Use Only

9. NO RGB/COMPONENT VIDEO SIGNAL WHEN PLAY DISC

R1160, R1161, R1162 :

Is there a signal?

YES

PVM01 Pin 13, 14, 16 :

Is there a signal?

YES

IC801 Pin 24, 25, 26 :

Is there a signal ?

YES

NO

Check IC801 Pin 14 (12V)

Pin 30 (5, 3V)

Pin 31, 32 (SCL, SDA) : .

Check condition

RGB_Sel_Out & Ypbpr_Mute_L

YES

Check cable connection Replace IC801

YES

LGE Internal Use Only

3-14

Only for training and service purposes

10. NO COMPOSITE/S-VIDEO SIGNAL WHEN PLAY DISC

R1157, 1158, 1159 :

Is there a signal?

YES

PVM01 Pin 18, 19, 20 :

Is there a signal?

YES

IC801 Pin 27, 29, :

Is there a signal?

YES

Check S-VIDEO

cable connection

(S-VIDEO)

(SCART)

IC801 Pin 36, 39, :

Is there a signal?

YES

Check SCART

cable connection

NO

Check IC801 Pin 14 (12V)

Pin 30 (5, 3V) Pin 31, 32

(SCL, SDA) : .

YES

Replace IC801

3-15

LGE Internal Use Only

11. NO TV, EXTERNAL INPUT VIDEO SIGNAL

No TV, external input

video signal

No video

signal of external

input AV3

(Front

RCA input)

YES

R905 :

Is there a signal?

NO

Check

cable connection &

input signal

When cable

NO

connecting tuner

and rear SCART 1, 2

no TV video signal

(AV1/2)

C843, C863, C864 :

Is there a signal?

IC 801 Pin 42 :

Is there a signal?

YES

IC801 Pin 14

NO

(12V) Pin 30

(5, 3V) Pin 31,

32 (SCL, SDA)

Check

: .

YES

Replace

IC801

Check no RGB / Component / Composite /

LGE Internal Use Only

IC901 Pin (56, 57, 58,

61,62, 63, 64, 65) VIND2-VIND9

is there a signal .

YES

S-VIDEO signal when play DISC

3-16

Check Pin 51

/RST_SAA7138

YES

X901

(24.576MHz)

oscillated?

YES

R906,

R909 (SCL/SDA), L917

(VinCLK)

YES

NONO

NO

Check

IC1302 reset

circuit

Change

X901

Check

IC901 power

3.3V & 1.8V

IC901 defect

Only for training and service purposes

12. NO DV (IEEE1394) INPUT (VIDEO/AUDIO) SIGNAL

Check DV_Jack connection

YES

DV-mode switching?

YES

IC1401 power 3.3V

YES

IC1401 Pin 37 : “High”

& X401 (24.576MHz)

oscillated ?

YES

IC1401 pin 15 : “High” .

Is there a signal?

YES

NO

Change to DV-mode.

using remote control

Check power 3.3V on I/O board

Check IC1302 reset circuit

Check DV cable

IC1401

Pin 1, 27, 28, 29, 30 :

Is there a signal?

YES

IC1401 Pin 2, 3 :

Is there a signal?

NO

IC101 defect

NO

YES

3-17

Replace IC1401

LGE Internal Use Only