LG HDR776 Service Manual

HDD/DVD RECORDER

SERVICE MANUAL

MODEL : RH265/RH266/HDR776

CAUTION

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

MODEL : RH265/RH266/HDR776

SERVICE MANUAL

P/NO : AFN31701932 JANUARY, 2007

http://biz.lgservice.com

CONTENTS

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

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

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

SECTION 4.........RS-02A LOADER PART

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

1-2

SECTION 1

SUMMARY

CONTENTS

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

PRODUCT SAFETY SERVICING GUIDELINES FOR HDD/DVD RECORDER PRODUCTS

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

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

• GENERAL SERVICING PRECAUTIONS

• INSULATION CHECKING PRODEDURE

• ELECTROSTATICALLY SENSITIVE (ES) DEVICES

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

SPECIFICATIONS ........................................................................................................................................1-7

1-3

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.

1-4

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

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

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.

1-5

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

electrolytic 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.

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.

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.

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.)

1-6

SERVICE INFORMATION FOR EEPROM IC SETTING

1. Press the CLEAR button on the remocon together with C PROGP on the front panel about 6 sec.

The picture on OSD will be as bellow :

Model : RH2'S

2. To MOVE from OP1 (Option 1) to another option, press button on the remote control or front pane.

3. To CHANGE the option code, press button on the remote control.

4. To APPLY the option code, after change the option press OK/ENTER button on remote control.

5. To INITIALIZE the system, press CLEAR button on the RMC together with C PROGP on the front panel

about 6 sec.

Note : This process will only clear the mapping channel and not delete on HDD.

6. To exit from the option code menu without initialize the system, just turn off the power and then turn on again.

OP1 : 00 00000000 OP2 : 00 00000000 OP3 : 00 00000000 OP4 : 00 00000000 OP5 : 00 00000000 Write : OK OP6 : 00 00000000 E x i t : MP OP7 : 00 00000000 Move : < > OP8 : 00 00000000 E d i t :

MASK 00. EEP : FF(OR). D55

1-7

SPECIFICATIONS

• GENERAL

Power requirements AC 200-240V, 50/60Hz Power consumption 30W Dimensions (approx.) 430 X 54 X 275mm (w x h x d) without foot Net weight (approx.) 4kg Operating temperature 5°C to 35°C Operating humidity 5% to 90% Television system PAL I, B/G, I/I, SECAM D/K, K1, SECAM L color system Recording format PAL

• RECORDING

Recording format DVD Video Recording, DVD-VIDEO Recordable media HDD (160GB), DVD-ReWritable, DVD-Recordable, DVD+ReWritable,

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

Recordable time DVD (4.7GB) : Approx. 1hour (XP mode), 2hours (SP mode),

4hours (LP mode), 6hours (EP mode), 11hours (MLP mode)

DVD+R DL (8.5GB) : Approx. 1.8hour (XP mode),

3.6hours (SP mode), 7.3hours (LP mode), 11hours (EP/ MLP mode)

HDD (160GB, MPEG2 Recording) :

Approx. 66hours (XP mode), 84hours (SP mode), 164hours (LP mode), 233hours (EP mode), 477hours (MLP mode)

Video recording format

Sampling frequency 27MHz Compression format MPEG2 or MPEG4 (HDD only)

Audio recording format

Sampling frequency 48kHz Compression format Dolby Digital

• PLAYBACK

Frequency response DVD (PCM 48 kHz) : 8Hz to 22kHz, CD : 8Hz to 20kHz

DVD (PCM 96 kHz) : 8Hz to 44kHz Signal-to-noise ratio More than 100dB (AUDIO OUT connector) Harmonic distortion Less than 0.008% (AUDIO OUT connector) Dynamic range More than 95dB (AUDIO OUT connector)

• INPUTS

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

• OUTPUTS

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

(Pb)/(Pr) 0.7V (p-p), 75Ω, RCA jack x 2 HDMI video/audio output 19pin (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) 2.0Vrms (1KHz, 0dB), 600Ω, RCA jack (L, R) x 1 / SCART x 2

2-1

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

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

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

2. DECK MECHANISM SECTION (RS-02A).................................................................................................2-3

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

SVC purchase order caution

Key board is array coming timer board. Purchase order board separately supply incomprehensible. Supply is possible in Location No A50 state in exploded views.

A54A

A46

104

101

468

410

A53

A60

A50

275

452

A26

A44

A52

253

462/463

250

462/463

OPTIONAL PART

HDMI MODEL ONLY

9 TOOL ONLY

HDMI

BOARD

MAIN

BOARD

I/O BOARD

CABLE7

CABLE11

CABLE5

CABLE2

CABLE3

CABLE1

465

320

264

260

261

470

465

267

268

467

468

465

OPTIONAL PART

274

266

468

A51

280

A43

CABLE10

468

471

468

A47

A54

SMPS

468

273

275

452

CABLE6

463

261

281

282

300

2-2

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION

2-3

2. DECK MECHANISM SECTION (RS-02A)

RS-02A(DR-10H)

1034

1025

1041

1432

1437

1434

1032

1033

1038

1011

1432

1020

1036

1432

Main C.B.A

1001

1431

1003

1002

1026

A001

A60

A002

1016

1433

1017

1013

1015

1012

1439

1047

1046

1014

OPTIONAL PART

1043

1045

1044

1042

005

1018

1019

1018

1019

DR-10 : IN, SH ONLY

DR-10 : PT ONLY

1043

1045

A005

1030

2-4

3. PACKING ACCESSORY SECTION

3-1

SECTION 3

ELECTRICAL

CONTENTS

ELECTRICAL TROUBLESHOOTING GUIDE

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

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

WHEN PLAYING DISC, NO AUDIO OUTPUT

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

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

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

1. SYSTEM BLOCK..............................................3-18

2. VIDEO BLOCK (COLOR BAR INPUT)...........3-21

AUDIO BLOCK (1KHZ SINEWAVE INPUT)

..........3-22

4. SERIAL INTERFACE BLOCK

(BETWEEN MAIN AND I/O) ............................3-23

5. TUNER BLOCK ................................................3-24

6. HDMI BLOCK....................................................3-25

WIRING CONNECTION DIAGRAM...............3-26

1. WIRING CONNECTION DIAGRAM 1 ............3-26

2. WIRING CONNECTION DIAGRAM 2 ............3-27

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

BLOCK DIAGRAMS.............................................3-29

1. OVERALL BLOCK DIAGRAM.........................3-29

2. SMPS BLOCK DIAGRAM ...............................3-30

3. MAIN BLOCK DIAGRAM.................................3-31

4. POWER MAIN BLOCK DIAGRAM .................3-32

5. IN/OUT BLOCK DIAGRAM .............................3-33

6. VIDEO IN BLOCK DIAGRAM..........................3-34

7. VIDEO OUT BLOCK DIAGRAM .....................3-35

8. AUDIO IN BLOCK DIAGRAM..........................3-36

9. AUDIO OUT BLOCK DIAGRAM .....................3-37

10. POWER I/O BLOCK DIAGRAM......................3-38

11. FLD TIMER BLOCK DIAGRAM.......................3-39

12. TIMER BLOCK DIAGRAM...............................3-40

CIRCUIT DIAGRAMS...........................................3-42

1. SMPS 1 CIRCUIT DIAGRAM ..........................3-42

2. SMPS 2 CIRCUIT DIAGRAM..........................3-44

3. MPEG CIRCUIT DIAGRAM.............................3-46

4. FLASH/DDR CIRCUIT DIAGRAM ..................4-48

5. RESET & 1394 CIRCUIT DIAGRAM..............3-50

ATAPI, HDMI & USB CIRCUIT DIAGRAM

............3-52

7. I/O, µ-COM CIRCUIT DIAGRAM ....................3-54

8. DECODER & MIC CIRCUIT DIAGRAM.........3-56

9. SCART/RCA CIRCUIT DIAGRAM ..................3-58

10. HDMI CIRCUIT DIAGRAM ..............................3-60

11.

TIMER CIRCUIT DIAGRAM (4, 5 TOOL)

...........3-62

12. TIMER CIRCUIT DIAGRAM (6 TOOL) ...........3-64

13. TIMER CIRCUIT DIAGRAM (7 TOOL) ...........3-66

14. TIMER CIRCUIT DIAGRAM (9 TOOL) ...........3-68

15. TOUCH SENSE CIRCUIT DIAGRAM

(9 TOOL) ............................................................3-70

CIRCUIT VOLTAGE CHART.............................3-72

PRINTED CIRCUIT DIAGRAMS .....................3-80

1. MAIN P.C.BOARD ............................................3-80

2. I/O P.C.BOARD .................................................3-82

3. POWER P.C.BOARD .......................................3-86

4. TIMER P.C.BOARD ..........................................3-88

HDMI P.C.BOARD (OPTIONAL PARTS)

...........3-92

6. TOUCH PAD P.C.BOARD (9 TOOL)...............3-92

7. HDD JUNC P.C.BOARD ..................................3-92

Is the D127 normal?

3-2

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

Is the Vcc

(10V - 17V) supplied to

IC101 Pin 6?

Is the D102 normal?

YES

Check or replace the D102

Is the D128 normal? Replace the D128

YES

Is there about 2.5V at the

IC103 Pin 1?

Replace the IC103

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

YES

Replace the D127

YES

Is the D126 normal? Replace the D126

YES

Power line of I/O PCB is short

3-3

No 5V for HDD & DVD drive

Is there about 5.5V at

the IC156 Pin 1?

Check D125 and replace

YES

Is there about 4V ~ 5V at

the IC156 Pin 4?

Check the “PWR CTL‘H’”

signal from µ-COM

YES

Check the IC156 and replace

No 12V for HDD & DVD drive

Is there about 13.5V at

the IC155 Pin 1?

Check D124 and replace

YES

Is there about 4V ~ 5V at

the IC155 Pin 4?

Check the “PWR CTL ‘H’”

signal from µ-COM

YES

Check the IC155 and replace

3-4

No 12VT

2. POWER SUPPLY ON I/O BOARD

Check D124 on SMPS

board and replace

YES

Is the Vcc (14V) supplied to

Q164 collector?

Check Q164 and replace

YES

Is there about 12.5V at

ZD151 & Q164 base?

Check D126 on SMPS

board and replace

YES

Is the Vcc (33V) supplied

to Q162 emitter?

Check Q162 and replace

YES

Is there about 0V at

Q162 base?

Check the “TIMER_H”

signal from µ-COM

YES

Is there about 5V at R170

and 0.7V at Q165 base?

Check Q156 and replace

3-5

No 5VT

Check Q152 and replace

Is the Vcc (5.3V)

supplied to Q155 emitter?

Check 5.3VA on SMPS board

YES

Is there about 0V

at D152 and

Q152 vollector?

Check Q155 and replace

YES

Is there about 5V

at R180 and 0.7V

at Q152 base?

Check the “TIMER H”

signal from µ-COM

YES

No 33VT

Check Q152 and replace

Is the Vcc (33V)

supplied to Q161 emitter?

Check D126 on SMPS

board and replace

YES

Is there about 0V at

Q152 collector?

Check Q161 and replace

YES

Is there about 5V

at R180 and 0.7V

at Q152 base?

Check the “TIMER H”

signal from µ-COM

YES

3-6

No 5.0VD

Is there about 5.3V at

the IC153 Pin 1?

Check 5.3VA on SMPS board

YES

Is there about 4V ~ 5V at

the IC153 Pin 4?

Check the “PWR CTL H”

signal from µ-COM

YES

Check the IC153 and replace

No 2.5V

Is there about 3V ~ 3.8V

at the IC151 Pin 1?

Check D154 and

D127 on SMPS board

YES

Is there about 4V ~ 5V at

the IC151 Pin 4?

Check the “PWR CTL H”

signal from µ-COM

YES

Check the IC151 and replace

No 3.3V

Is there about 3.8V at

the IC152 Pin 1?

Check D127 on SMPS

board and replace

YES

Is there about 4V ~ 5V at

the IC152 Pin 4?

Check the “PWR CTL H”

signal from µ-COM

YES

Check the IC152 and replace

3-7

No SW_5.3VA

Is the Vcc (5.3V)

supplied to Q158 emitter?

Check 5.3VA on SMPS board

YES

Is there about 0V

at R179 and R156?

Check the “STANBY H”

signal from µ-COM

YES

Check Q158 and replace

No SW_FD(+)

Is the Vcc (FD+) supplied

to Q163 collector?

Check D121 on SMPS

board and replace

YES

Is there about 5.3V at

R184 and Q153 collector?

Check Q163 and replace

YES

Is the VCC (5.3V)

supplied to Q153 emitter?

Check 5.3VA on SMPS board

YES

Is there about 0V

at Q153 base?

Check the “STANBY H”

signal from µ-COM

YES

Check Q153 and replace

3-8

No 1.8V

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

Is the Vcc (3.3V)

supplied to Pin 3 IC155?

Check 3.3V power supply

YES

IC155 defect

No 1.25V

Check the IC154 and replace

Is there about 5.3V at

the IC154 Pin 2?

Check 5.3VA on SMPS board

YES

Is there about 4V ~ 5V at

the IC154 Pin 5?

Check the “PWR CTL H”

signal from µ-COM

YES

3-9

“Please wait” displayed

continue at power on

3. SYSTEM CIRCUIT PART

Check PVM02 Pin 25 IC 701 Pin 19

YES

IC1306 Pin 5 : ?

(/HOST-RESET)

Replace X1101

YES

X1101 : Clock oscillated?

(13.5MHz)

Check IC1201 (Flash memory) & IC1101

YES

AR1105 Pin 3 : ?

IC1201 Pin 32 : ?

IC1101 defect

R1173, R1174 : ?

DISC not recognized

4. DISC NOT RECOGNIZED

Check SMPS

YES

Check driver power?

5V, 12V

Change MEDIA TEST

YES

Check ATAPI connector

Check loader

3-10

When playing DISC, no Audio output

Replace IC905

IC905 Pin 1, 7 :

Is there a signal

Check

IC905 Pin 8

(12VT)

CHECK

IC903 Pin 5, 6,

7, 8 : .

Pin 3, 4 (Host CLK

& DATA) :

NO NO

YES

IC1101 defect

5. WHEN PLAYING DISC, NO AUDIO OUTPUT

IC903 Pin 14, 15 :

Is there a signal?

Check

IC801 Pin 14

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

Pin31, 32

(SCL, SDA) :

NO NO

Replace

IC801

IC803 Pin 34, 35,

37, 38 : Is there

a signal?

YES

L806, L826,

L825, L810 :

Is there a signal?

YES

Check

Q808, Q809, Q810, Q801

Check

cable connections &

TV audio mute.

Check

IC903 Pin 11 (5VD)

YES

Replace IC903

IC903 Pin 1, 16

(Z_MUTE R/L) : .

IC701 Pin 58

(A_MUTE_L) :

3-11

6. NO OPTICAL/DIGITAL OUTPUT

R1107 : .

Is there a signal?

C856 : .

Is there a signal?

R851 : .

Is there a signal?

YES YES

BD817 : .

Is there a signal?

Check JK803 Pin 2 (5V)

YES YES

Check JK802 &

RCA cable connection

Check JK803 &

optic cable connection

YES

Check

PVM02 Pin 24 (SPDIF_OUT) : .

YES

3-12

7. NO TUNER AUDIO OUTPUT

TU701 Pin 16 (SIF) :

Is there a signal?

IC901 Pin 106, 107

Is there a signal?

IC901 defect

When playing DISC,

no audio output

Replace IC801

CHECK

IC801 Pin 14 (12V)

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

(SCL, SDA) :

Change X901

X901 (24.576MHz)

oscillated?

YES

IC801 Pin 40, 41 :

Is there a signal?

Check IC1302

reset circuit

Check Pin 51/

RST_SAA7138

YES

Check IC901 power

3.3V & 1.8V

R606, R612

(SCL/SDA)

YES

IC901 Pin 98,

99, 100, 95 (Ain_D0,

AIN_SCLK, AIN_FSYNC,

AIN_MCLK) : Is there

a signal?

3-13

YES

8. NO EXTERNAL AUDIO INPUT

< AV3 > < AV1/AV2>

IC803 Pin 40, 41 :

Is there a signal?

YES

C9F3, C9F4 :

Is there a signal?

IC801 pin 2, 3, 5, 6 :

Is there a signal?

Check

IC801 Pin 14 (12V)

Pin 30 (5, 3V)

Pin 31, 32

(SCL, SDA) : .

Check

cable connections

& input signal.

IC901 defect

When playing DISC,

no audio output

IC901

Pin 98, 99,100,

95 (Ain_D0,

AIN_SCLK, AIN_FSYNC,

AIN_MCLK) :

Is there

a signal?

Replace

IC801

Check

IC1302 reset

circuit

Check Pin 51/

RST_SAA7138

Change X901

X901

(24.576MHz)

oscillated?

Check

IC901 power

3.3V & 1.8V

R606, R612

(SCL/SDA)

3-14

R1160, R1161, R1162 :

Is there a signal?

PVM01 Pin 6, 8, 10 :

Is there a signal?

Check condition

RGB_Sel_Out & Ypbpr_Mute_L

Check cable connection Replace IC801

9. NO RGB/COMPONENT VIDEO SIGNAL WHEN PLAY DISC

YES

IC801 Pin 24, 25, 26 :

Is there a signal ?

CHECK IC801 Pin 14 (12V)

Pin 30 (5, 3V)

Pin 31, 32 (SCL, SDA) : .

3-15

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

R1157, 1158, 1159 :

Is there a signal?

PVM01 Pin 5, 7, 14 :

Is there a signal?

Check SCART

cable connection

Check IC801 Pin 14 (12V)

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

(SCL, SDA) : .

IC801 Pin 27, 29, :

Is there a signal?

IC801 Pin 36, 39, :

Is there a signal?

YES

Replace IC801

YES

Check S-VIDEO

cable connection

YES

(SCART)

(S-VIDEO)

3-16

No TV, external input

video signal

IC 801 Pin 42 :

Is there a signal?

R605 :

Is there a signal?

Check Pin 51

/RST_SAA7138

IC901 Pin (56, 57, 58,

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

is there a signal .

When cable

connecting tuner

and rear SCART 1, 2

no TV video signal

(AV1/2)

YES

11. NO TV, EXTERNAL INPUT VIDEO SIGNAL

No video

signal of external

input AV3

(Front

RCA input)

NONO

Check

IC801 Pin 14

(12V) Pin 30

(5, 3V) Pin 31,

32 (SCL, SDA)

: .

YES

Check

cable connection &

input signal

C859, C896, C895 :

Is there a signal?

YES

CheckK no RGB / component / composite /

S-VIDEO signal when play DISC

Replace

IC801

Check

IC1302 reset

circuit

X901

(24.576MHz)

oscillated?

YES

Change

X901

R606,

R612 (SCL/SDA), L928

(VinCLK)

IC901 defect

YES

Check

IC901 power

3.3V & 1.8V

3-17

Check DV_Jack connection

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

Change to DV-mode.

using remote control

YES

DV-mode switching?

Check power 3.3V on I/O board

YES

IC1401 power 3.3V

Check IC1302 reset circuit

YES

IC1401 Pin 37 : “High”

& X401 (24.576MHz)

oscillated ?

Check DV cable

YES

IC1401 pin 15 : “High” .

Is there a signal?

Replace IC1401

YES

IC1401

Pin 1, 27, 28, 29, 30 :

Is there a signal?

YES

IC1401 Pin 2, 3 : Is there a signal?

IC101 defect

3-18

WAVEFORMS

1. SYSTEM BLOCK

Main Clock

Frequency=13.5MHz

IC1101

DDR RAM Clock

Frequency=198MHz

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