LG RH7XXX User Manual

CONTENTS

SECTION 1 . . . .SUMMARY

SECTION 2 . . . .CABINET & MAIN CHASSIS

SECTION 3 . . . .ELECTRICAL

SECTION 4 . . . .REPLACEMENT PARTS LIST

1-2

SECTION 1

SUMMARY

CONTENTS

NEW FUNCTIONS OF HDD/DVD-RECORDER ................................................................. 1-2

PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS.............. 1-3

SERVICING PRECAUTIONS .................................................................................................. 1-4

• General Servicing Precautions

• Insulation Checking Prodedure

• Electrostatically Sensitive Devices

SERVICE INFORMATION FOR EEPROM IC SETTING ................................................. 1-5

SPECIFICATIONS ...................................................................................................................... 1-6

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 SIGNALS FROM HDD-DVD RECORDER 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 IS 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 FORMATS. 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 RECORDING
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(DVD­RW) TO HDD , AND ONLY NORMAL DUBBING AVAILABLE WHEN COPYING VIDEO MODE DISC

(DVD+R/RW, DVD-R) TO HDD

1-4

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 Electronics
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 Electronics 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.

PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS

A.C. Voltmeter

Good Earth Ground
such as the Water
Pipe, Conduit, etc.

0.15uF

1500 OHM

10 WATT

Place this probe
on each exposed
metal part.

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.

Remembers 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) Disconnection or reconnecting any internal electrical

plug or other electrical connection.

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

trolytic 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 solid-state
device heat sinks are cerrectly installed.

6. Always connect test instrument ground lead to the
appropriate ground before connection 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 including 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 grouned-tip soldering iron to solder or unsolder
ES devices.

4. Use only an anti-static solder removal device. Some
solder removal devices not classified a “anti-static” can
generate electrical charges sufficient to damage ES
devices.

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

6. Do not remove a replacement ES device from its protec
tive 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

MICOM START

EEPROM ID CHECK
2 BYTE(B3,248,249)

MODEL NAME HEX BINARY
RH7500OPT1D800000000

OPT2 80 00000000
OPT3 03 00000000
OPT4 1000000000 (reserved)
OPT5 0B 00000000 (reserved)
OPT6 AC 00000000 (reserved)
OPT7 07 00000000 (reserved)
OPT8 02 00000000 (reserved)

RH7800 OPT1D800000000

OPT2 8000000000
OPT3 03 00000000
OPT4 20 00000000 (reserved)
OPT5 0B 00000000 (reserved)
OPT6 AC 00000000 (reserved)
OPT7 07 00000000 (reserved)
OPT8 02 00000000 (reserved)

WRITE:OK EXIT:MENU,MP
MOVE:< > EDIT : __
OPTION WRITE : OK (OK KEY IN)
MASK : R00 , EEP : R00 , (D10)
(Each mask ,eeprom, It shows a development
release version.)

DETECT NEW EEPROM (OPTION EDIT SCREEN)

*** EEPROM INITIAL ***

- SETUP is displayed in the field if pressing the Front ch- & ch+ Key with the Remocon number "clear"
key pressed in the status of powering on.

- AUTO SEARCH is done since the initial screen of ACMS is serviced if powering on.

OPTION DATA READ

5TIME & COMPARE

MICOM NORMAL

OPERATION START

Press the "CLEAR" key on the
Remote controller and the "CH - "
key one the Front Panel the same
time, then it goes in to Tracking
initial mode.

OPTION CONFIRMATION MODE

ID OK?

No

No

Yes

Yes

Yes

1-7

SPECIFICATIONS

• GENERAL

Power requirements AC 110-240V, 50/60 Hz
Power consumption 45W
Dimensions (approx.) 430 X 49 X 350 mm (w x h x d) without foot
Mass (approx.) 4.6 kg
Operating temperature 5˚C to 35˚C
Operating humidity 5 % to 90 %

Recording format PAL

• RECORDING

Recording format DVD Video Recording, DVD-VIDEO
Recordable media HDD (80GB), DVD-ReWritable,

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

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

4 hours (LQ mode), 6 hours (EQ mode)

DVD+R DL (8.5GB): Approx. 3 hour (HQ mode),

3 hours 40 minutes (SQ mode),
7 hours 10 minutes (LQ mode),
11 hours 30 minutes (EQ mode)

HDD (80GB): Approx. 20 hour (HQ mode), 40 hours (SQ mode),

74 hours (LQ mode), 111 hours (EQ mode)

Video recording format

Sampling frequency 27MHz
Compression format MPEG 2 (VBR support)

Audio recording format

Sampling frequency 48kHz
Compression format Dolby Digital

• PLAYBACK

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

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

• INPUTS

AERIAL IN Aerial input, 75 ohms
VIDEO IN 1.0 Vp-p 75 ohms, sync negative, RCA jack x 2 / SCART x 2
AUDIO IN 0 dBm more than 47 kohms, RCA jack (L, R) x 2 / SCART x 2
DV IN 4 pin (IEEE 1394 standard)

• OUTPUTS

VIDEO OUT 1 Vp-p 75 Ω, sync negative, RCA jack x 1 / SCART x 2
COMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 Ω, negative sync, RCA jack x 1

(Pb)/(Pr) 0.7 V (p-p), 75 Ω, RCA jack x 2
Audio output (digital audio) 0.5 V (p-p), 75 Ω, RCA jack x 1
Audio output (optical audio) 3 V (p-p), 75 Ω, Optical connector x 1
Audio output (analog audio) 2.0 Vrms (1 KHz, 0 dB), 600 Ω, 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(RL-05S) ........................................................................................2-3

3. Packing Accessory Section ...................................................................................................2-4

2-2

EXPLODED VIEWS

1. Cabinet and Main Frame Section

A

5

4

3

2

1

BCD

250

463

463

463

A46

300

468

468

468

463

270

468

465

8

265

26

467

468

A52

267

OPTIONAL PART

A44

260

320

261

A47

463

463

272

A60

100

457

102

103

273

468

261

261

A53

410

104

A26

275

103

A54

102

457

463

103

102

410

A48

274

102

103

101

452

275

A50

280

452

275

A43

283

2-3

2. DECK MECHANISM SECTION(RL-05S)

1434

1026

1435

1015

1005

1016

1001

1003

1013

1014

A001

1002

1434

1012

1019

1011

1009

1038

1024

1432

1029

1019

1025

1027

1020

1433

1437

1029

1432

1033

1021

A60

A000

1030

1025

1027

1432

1032

1432

1017

A004

1436

1018

1018A

1018B

1018C

1018E

1018D

1042

1434

1006

1041

A002

1434

2-4

808 Battery

Cable, Coaxial

Plug Ass’y, 1Way

Plug Ass’y, 2Way

Bag

Packing

Remote Control

Instruction Ass’y

Packing

Box

806

804

803

811

812

FLAT CABLE

822

801

900

802

803

810

CABLE ASS’Y

821

SCART CABLE

OPTIONAL PART

3. Packing Accessory Section

3-1

SECTION 3

ELECTRICAL

CONTENTS

HDR PART

ELECTRICAL TROUBLESHOOTING GUIDE

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

1. SMPS I/O PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

2. SMPS DVD/HDD PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

3. SYSTEM CIRCUIT PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

4. DISC NOT RECOGNIZED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

5. WHEN PLAYING DISC, NO AUDIO OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9

6. NO OPTICAL/DIGITAL OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

7. NO TUNER AUDIO OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11

8. NO EXTERNAL INPUT AUDIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12

9. NO RGB/COMPONENT VIDEO SIGNAL WHEN PLAY DISC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13

10. NO COMPOSITE/S-VIDEO SIGNAL WHEN PLAY DISC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13

11. NO TV, EXTERNAL INPUT VIDEO SIGNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

12. NO DV(IEEE 1394)INPUT(VIDEO/AUDIO) SIGNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15

BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16

1. OVERALL BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16

2. LAYOUT CONNECTION BLOCK DIAGRAM_1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-18

3. LAYOUT CONNECTION BLOCK DIAGRAM_2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20

4. SMPS BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22

5. POWER : MAIN BOARD BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-24

6. POWER : I/O BOARD BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26

7. IN/OUT BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-28

8. VIDEO BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-30

9. VIDEO SW PATH BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-32

10. AUDIO BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34

11. AUDIO SW PATH BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-36

12. AUDIO IN / OUT BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-38

13. FLD / µ-COM / TUNER BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-40

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

1. POWER CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-42

2. E5 BGA, POWER, UART2 CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-44

3. DDR SDRAM, FLASH CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-46

4. RST, CONTROL/STATUS REG, ADDRESS LATCH CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-48

5. HDMI TX / IEEE1394 CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-50

6. VIDEO IN/OUT CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-52

7. MEMORY, ATAPI, I/O CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-54

8. I/O MICOM CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-56

9. TUNER, MPX, ADC, DAC, JACK CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-58

10. JACK CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-60

11. KEY CIRCUIT DIAGRAM ( 5 TOOL ONLY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-62

12. KEY CIRCUIT DIAGRAM ( 6 TOOL ONLY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-64

13. KEY CIRCUIT DIAGRAM ( 8 TOOL ONLY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-66

14. KEY CIRCUIT DIAGRAM ( 9 TOOL ONLY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-68

15. TIMER CIRCUIT DIAGRAM ( 5 TOOL ONLY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-70

16. TIMER CIRCUIT DIAGRAM ( 6 TOOL ONLY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-72

17. TIMER CIRCUIT DIAGRAM ( 8 TOOL ONLY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-74

18. TIMER CIRCUIT DIAGRAM ( 9 TOOL ONLY ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-76

•

WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-78

•

CIRCUIT VOLTAGE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-80

PRINTED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-86

1. MAIN P.C.BOARD(TOP SIDE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-86

2. MAIN P.C.BOARD(BOTTOM SIDE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-88

3. I/O P.C.BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-90

4. JACK P.C.BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-90

5. HDD P.C.BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-92

6. POWER P.C.BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-93

7. KEY P.C.BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-94

8. TIMER(LED) P.C.BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-95

3-2

ELECTRICAL TROUBLESHOOTING GUIDE

HDR PART

Replace the BD101

Replace the F101
(Use the same Fuse)

No 5.3VA

Is the F101 Normal?

Is the R101 Normal?

Is the Vcc (10V - 17V)
supplied to IC101 Pin2?

Is the BD101 Normal?

Is the D121 normal?

Is there about 2.5V at the
IC103 Pin1?

Is the D126 normal?

Is the D130 Normal?

Is the D127 Normal?

Is the D128 Normal?

Power Line of I/O PCB
is short

NO

NO

NO

YES

YES

YES

YES

YESYES

YES

YES

YES

YES

YES

YES

Replace the R101

NO

NO

NO

Is the D102 normal?

Check or Replace the
D102

Replace the D121

Replace the IC103

NO

Replace the D126

NO

Replace the D130

NO

Replace the D127

NO

Replace the D128

1. SMPS I/O PART 1. SMPS I/O PART

3-3

No 12V

Is there about 3.8V
at the IC153 pin1?

Check or Replace
the D126

Is there about 3.3V~
5V at the IC153 pin4?

Check the ‘PWR CTL
“H”’ signal from µ-com

Check the IC153
and Replace

YES

YES

YES

No 5VT

Check or Replace

the D126

Is the Vcc(14V) sup­plied to Q124 Emittor?

Check or Replace
the D124

Is the Vcc(33V) sup­plied to Q124 Base?

NO

NO

Check the ‘TIMER “H”’
signal from µ-com

NO

Check the 33V Line

YES

YES

YES

No 5VD

Check or Replace
the D126

Check the ‘Power CTL
“H”’ signal from µ-com

Is the Vcc(14V) sup­plied to Q120 Emittor?

Is the Q120 Base
‘H’?

Check or Replace
the Q124

NO

NO

YES

YES

YES

No 12VA /12VT

Check or Replace
the D126

Is there about 14V
at the IC156 pin1?

Is there about 3.3V~
5V at the IC156 pin4?

NO NO

Check the ‘TIMER “H”’
signal from µ-com

NO NO

YES

YES

Check the IC156
and Replace

YES

3-4

NO VFD

Check or Replace
the R107

Is the R107
Normal?

Is the D128
Normal?

NO

NO

Check or Replace
the D128

NO

Check or Replace
the ZD151

YES

YES

YES

Is the ZD151
Normal?

Check or Replace
the D127

YES

No 33V

Check or Replace

the D130

Check the ‘PWR CTL
“H”’ signal from µ-com

Is the Vcc(33V) sup­plied to Q123 Emittor?

Is the Q123 Base
‘H’?

Check or Replace
the Q123

NO

NO

YES

YES

YES

3-5

Replace the BD101

Replace the F101
(Use the same Fuse)

No 3.8VA

Is the F101 Normal?

Is the TH01 Normal?

Is Vcc (11V -18V) supplied
to IC101 Pin3?

Is the BD101 Normal?

Are the D122 normal?

Is there about 2.5V at the
IC106 Pin1?

Is the D123 normal?

Is the D124 Normal?

Is the D125 Normal?

Power Line of Main

PCB(VDR) is short

NO

NO

NO

YES

YES

YES

YES

YESYES

YES

YES

YES

YES

YES

Replace the TH01

NO

NO

NO

Is the Q111 normal?

Check or Replace the Q111

Replace the D122

Replace the IC106

NO

Replace the D123

NO

Replace the D124

NO

Replace the D125

2. SMPS DVD/HDD PART

3-6

No 5.0V

Is there about 5.5V
at the IC151 pin1?

Check or Replace
the D124

Is there about 3.3V~ 5V
at the IC151 pin4?

Check the ‘PWR CTL
“H”’signal from µ-com

Check the IC151
and Replace

YES

YES

YES

No 3.3V

Check or Replace

the D122

Check the ‘PWR CTL
“H”’signal from µ-com

Is there about 3.8V at
the IC154 pin1?

Is there about 3.3V~
5V at the IC154 pin4?

Check the IC154
and Replace

NO

NO

YES

YES

YES

No 3.3V

Check or Replace

the D122

Check the ‘PWR CTL
“H”’signal from µ-com

Is there about 3.8V at
the IC154 pin1?

Is there about 3.3V~
5V at the IC154 pin4?

Check the IC154
and Replace

NO

NO

YES

YES

YES

No 2.5V

Check or Replace
the D122

Is there about 3.8V
at the IC152 pin1?

Is there about 3.3V~ 5V
at the IC152 pin4?

NO NO

Check the ‘PWR CTL
“H”’signal from µ-com

NO NO

YES

YES

Check the IC152
and Replace

YES

3-7

No 12V

Check or Replace
the D125

Check the ‘PWR CTL
“H”’signal from µ-com

Is there about 13.5V
at the IC157 pin1?

Is there about 3.3V~ 5V
at the IC157 pin2?

Check the IC157
and Replace

NO

NO

YES

YES

YES

No 1.8V

Check or Replace

the D123

Check the ‘PWR CTL
“H”’signal from µ-com

Is there about 2.3V at
the IC160 pin1?

Is there about 3.3V~ 5V
at the IC160 pin4?

Are the R167,R168
normal?

NO

NO

Check or Replace
the R151,R153

NO

YES

YES

YES

Check the IC160
and Replace

YES

3-8

“Please wait” displayed

Continue at Power On

Check PN802-22
IC 701-19

IC 307-5: ?
(/HOST-RESET)

X101: Clock oscillated?
(27MHz)

NO

Replace X101

NO

Check IC206 & (Flash
MENORY) IC 101

NO

IC 101 DEFECT

NO

YES

YES

R146 : ?
IC 206-26 : ?

YES

R180, R181 : ?

YES

3. SYSTEM Circuit PART

Check DRIVER Power?
5V. 12V

Change MEDIA TEST

Check J601

Check SMPS

NO

NO

YES

4. DISC not recognized

CHECK
IC808- pin2, 4 (VCC) :
pin32,33(SLC/CLK) :

IC 805-pin14,19(z_mute_R/L):
IC701-pin58(A_mute_L) :

CHECK
IC 805-pin1,2,3,4 :
Pin10(reset) :
Pin7,8(I2C) :

3-9

5. When playing DISC, no Audio output

CHECK IC802-pin3, 6,
13(VCC)

Replace IC802

YES

YES

IC805-pin15,18
(Audio_out R/L) : Is
there a signal?

CHECK Q801, 802,
803, 804, 806

C841, C842 on I/O
PCB Is there a signal?

Only “Without SCART model”

IC 808-pin21, 22, 25,
26:Is there a signal?

YES

YES

NO

IC101

DEFECT

NO

NO

C8A3, C8A4 on I/O
PCB Is there a signal?

YES

NO

YES

L821,L836: Is there
a signal?

YES

CHECK Cable connec­tions & TV Audio mute.

YES

3-10

R101:

CHECK PN802-pin2
(SPDIF_OUT) :

R933 :

CHECK JK803 & RCA
cable connection

NO

YES

YES

YES

CHECK JK805 & Optic
cable connection

IC101 DEFECT

NO

6. No OPTICAL/DIGITAL Output

3-11

7. No TUNER Audio Output

TU801-pin16(SIF):

Is there a signal?

IC812-30,31:
Is there a signal?

IC808-pin20,24,23,27 :
Is there a signal?

Check C920
Is there a signal?

Replace IC808

CHECK

IC808-pin2,4(VCC) :

pin32,33(SLC/CLK) :

YES

YES

IC809-pin7, IC810-pin7:
Is there a signal?

YES

IC802-pin10,12:
Is there a signal?

YES

IC802-pin2,4,7,8 :
Pin9(reset) :

When playing DISC, no
Audio output

YES

YES YES

NO

NO

Check R839,R841:

?

NO

CHECK
IC811 : Power & In/Out PIN

NO

CHECK
IC802-pin3,6,13(VCC)

NO

Replace IC802

YES

3-12

8. No External input Audio

Check R839,R841:

?

CHECK Cable connec­tions & Input signal.

CHECK IC811 :
Power & In/Out PIN

CHECK IC802­pin3, 6, 13(VCC)

Replace IC802

NO

YES

YES

IC809-pin7, IC810­pin7:Is there a signal?

IC808-pin8,10,14,16
: Is there a signal?

IC809,IC810-pin3:
Is there a signal?

IC809,IC810-pin5:
Is there a signal?

IC809,IC810-pin1:
Is there a signal?

< AV1/AV2 > < AV3 > < AV4 >

CHECK Cable connec­tions & Input signal.

NO NO

IC802-pin10,12:
Is there a signal?

IC802-pin2,4,7,8 :
Pin9(reset) :

When playing DISC,
no Audio output

NO NO

NO

NO

YES

NO YES

YES

YES

3-13

9. No RGB/Component Video signal when play DISC

R131,R132,R133:

Is there a signal?

PN801-7,8,9:
Is there a signal?

IC807-pin24,21,18
Is there a signal?

CHECK SW801 statue &
SW801-in2(RGB_SEL”H”)

NO

CHECK IC807­pin1,16(+5.2V)

Replace IC807

YES

YES

YES YES

10. No composite/s-video Signal when play DISC

R128,R129,R130:

Is there a signal?

PN801-2,4,6:
Is there a signal?

IC807-27,30,32:
Is there a signal?

IC808-29.30:
Is there a signal?

NO

CHECK IC807­pin1,16(+5.2V)

NO

Replace IC807

YES

CHECK IC808­pin2,4(+12VA)

YES

YES

YES

Replace IC808

YES

3-14

11. No TV, External input Video signal

CHECK Signal path
on the I/O board

C540 : Is there a
signal?

Check PN802-pin22
IC 701: reset circuit

Replace IC501

YES

YES

C532,C535,C537:
Is there a signal?

C538:Is there a
signal?

No video signal of external
input AV3 (Rear RCA input)

No video signal of external
input AV4 (composite,s-video)

When Cable connecting Tuner and Rear
SCART1,2 No TV video signal(AV1/2)

NO NO NO

NO

NO

YES

YES

NO

YES

YES

YES

NO

CHECK Cable connec­tions & Input signal.

IC501- pin34
(reset”H”) :

IC501- pin40 (VI_CLK) : X501
clock oscillated? (14.318MHz)

YES

CHECK No RGB/ component/com­posite Signal when play DISC

YES

3-15

12. No DV(IEEE 1394)input(Video/Audio) signal

check DV_Jack and CABLE(CN501)

connection

DV-mode switching
?

IC401 power 3.3V

IC 401-37: “High”
&X401 oscillated?(24.576MHz)

NO

CHECK SMPS
+3.3V

NO

Change to DV-mode.
Using Remote Control

NO

CHECK Reset
Circuit

YES

YES

YES

IC401-15
Is there a signal?

YES

IC401-pin1, 27, 28, 29,
30: Is there a signal?

YES

IC401-pin 2, 3 :
Is there a signal?

YES

IC101 DEFECT

YES

Check DV Cable

YES

Replace IC401

YES