LG LHS-26-SGS, LHS-26-SHS, LHS-26-SQS, LHT-2660, LHT-2645 Service manual

DVD/CD RECEIVER

SERVICE MANUAL

MODELS : LH-T2645(X)/LH-TK2645(X)/LH-T2665(X)/LH-TK2665(X)/LH-T2660(X)/LH-TK2660(X)

SERVICE MANUAL

P/NO : AFN31220002 AUGUST, 2006

MODELS : LH-T2645(X)/LH-TK2645(X)/LHS-26SGS/26SGW

LH-T2665(X)/LH-TK2665(X)/LHS-26SQS/26SQW
LH-T2660(X)/LH-TK2660(X)/LHS-26SHS/26SHW

LH-T2645(X)/LH-TK2645(X)
LH-T2665(X)/LH-TK2665(X)

LH-T2660(X)/LH-TK2660(X)

1-1

[CONTENTS]

SECTION 1. GENERAL

• SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

• ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

• SERVICE INFORMATION FOR EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

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

SECTION 2. AUDIO PART

• AUDIO TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

• WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

• BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

• CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

SECTION 3. DVD & AMP PART

• ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

• DVD & AMP CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22

• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

SECTION 4. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

SECTION 5. SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

SECTION 6. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

1-2

SERVICING PRECAUTIONS

NOTES REGARDING HANDLING OF THE PICK-UP

1. Notes for transport and storage

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

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

2. Repair notes

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

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

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

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

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

6) Never attempt to disassemble the pick-up.
Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

Storage in conductive bag

Drop impact

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

Magnet

How to hold the pick-up

Conductive Sheet

Cotton swab

Pressure

Pressure

SECTION 1. GENERAL

1-3

NOTES REGARDING COMPACT DISC PLAYER REPAIRS

1. Preparations

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

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

2. Notes for repair

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

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

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

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

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

6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent
static electricity changes in the clothing to escape from the armband.

7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.

Resistor
(1 Mohm)

Conductive
Sheet

Resistor
(1 Mohm)

Armband

1-4

ESD PRECAUTIONS

Electrostatically Sensitive Devices (ESD)

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

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off

any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface

such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

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

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

generate electrical charges sufficient to damage ESD devices.

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

devices.

6. Do not remove a replacement ESD device from its protective package until immediately before you are

ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).

7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the

protective material to the chassis or circuit assembly into which the device will by installed.

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

SAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion

such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can gener­ate static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

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

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

1-5

SERVICE INFORMATION FOR EEPROM

POWER ON

DVD LOGO Status (NO Disk status)

Remotecontrol
Pause key-->1-->4-->7-->2 in order.

Press number 0~9, Press charater
A~F (1~6 for a while)

Use arrow key ( ) to
move to approprite position and
make changes

Press pause key once

Change will be applied when power

OFF-->ON.

* OPTION

• NTSC model doesn’t have VCR option and use DVD option B~F as VCR option. (only DVD exist)

• PAL model has another separate VCR option. (Both VCR and DVD exist)

NAME HEX

OPT 1 55
OPT 2 41
OPT 3 40
OPT 4 FF
OPT 5 52
OPT 6 05
OPT 7 F8
OPT 8 31
OPT 9 0C
OPT A 00
OPT B 00
OPT C 00
OPT D 00
OPT E 00
OPT F 00
OPT G 00

DETECT NEW EEPROM
(OPTION EDIT SCREEN)

* Refer to page 6-1.

1-6

SPECIFICATIONS

GENERAL

Power supply Refer to main label
Power consumption Refer to main label
Net Weight 3.9 kg
External dimensions (W x H x D) 430 x 57 x 295 mm
Operating conditions Temperature: 5°C to 35°C, Operation status: Horizontal
Operating humidity 5% to 85%

CD/DVD

Laser Semiconductor laser, wavelength 650 nm
Signal system PAL 625/50, NTSC 525/60
Frequency response (audio) 150 Hz to 18 kHz
Signal-to-noise ratio (audio) More than 75 dB (1 kHz, NOP -6 dB, 20 kHz LPF/A-Filter)
Dynamic range (audio) More than 70 dB
Harmonic distortion (audio) 0.5 % (1 kHz, at 1W position) (20 kHz LPF)

VIDEO

Video input 1.0 V (p-p), 75 Ω, negative sync., RCAjack x 1
Video output 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1/ SCART (TO TV)

TUNER
FM

Tuning Range 87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHz
Intermediate Frequency 10.7 MHz
Signal-to Noise Ratio 60 dB (Mono)
Frequency Response 140 - 8,000 Hz

AM [MW]

Tuning Range 522 - 1,620 kHz or 520 - 1,720 kHz
Intermediate Frequency 450 kHz

AMPLIFIER(LH-T26’s)

Stereo mode Front: 30 W + 30 W (THD 10 %)

Centre*: 30 W
Surround*: 30 W + 30 W (6Ω at 1 kHz, THD 10 %)

Subwoofer*: 70 W (8Ω at 30 Hz, THD 10 %)
Input AUX IN, MIC
Outputs MONITOR, PHONES: (32 Ω, 1.0 V)

SPEAKERS(LHS-26SG)

Satellite Speaker Passive Subwoofer
Type 1 Way 1 Speaker 1 Way 1 Speaker
Impedance 6 Ω 8 Ω
Frequency Response 130 - 20,000 Hz 50 - 1,500 Hz
Sound Pressure Level 83 dB/W (1m) 82 dB/W (1m)
Rated Input Power 30W 70W
Max. Input Power 60W 140W
Net Dimensions 88 x 100 x 95 mm 160 x 350 x 325 mm
Net Weight 0.54 kg 4.12 kg

(* Depending on the sound mode

settings and the source, there may
be no sound output.)

1-7

SPEAKERS(LHS-26SH)

Satellite Speaker Passive Subwoofer
Type 1 Way 1Speakers 1 Way 1Speaker
Impedance 6 Ω 8 Ω
Frequency Response 130 - 20,000 Hz 50 - 1,500 Hz
Sound Pressure Level 130 - 20,000 Hz 50 - 1,500 Hz
Rated Input Power 30W 70W
Max Input Power 60W 140W
Net Dimensions 88 x 100 x 95 mm 160 x 350 x 325 mm
Net Weight 0.54 kg 4.12 kg

SPEAKERS(LHS-26SQ)

Satellite Speaker Passive Subwoofer
Type 1 Way 1 Speaker 1 Way 1 Speaker
Impedance 6 Ω 8 Ω
Frequency Response 130 - 20,000 Hz 50 - 1,500 Hz
Sound Pressure Level 83 dB/W (1m) 82 dB/W (1m)
Rated Input Power 30W 70W
Max. Input Power 60W 140W
Net Dimensions 88 x 100 x 95 mm 160 x 350 x 325 mm
Net Weight 0.54 kg 4.12 kg

2-1

SECTION 2. AUDIO PART

AUDIO TROUBLESHOOTING GUIDE

1. POWER SUPPLY CIRCUIT

2-2

2. FRONT CIRCUIT (1/2)

THE P1301 IS OK?

CHECK IF

CHECK IF

THE DIS301 IS OK?

P1301

Short 1pin of CN901 with 4pin of CN901 in SMPS part.

PIN1
PIN2
PIN3
PIN12

: -41 VKK
: -22 FL+
: -26.5 FL-

: +5.0

2-3

3. FRONT CIRCUIT (2/2)

CHECK IF

R345 ~ R350, R154

OK.

REPLACE
R345 ~ R350, R154.

Check if

the Remocon

waceform of the

P3101 pin 10

is OK

Check if

the RM301

voltage is OK(5V)

Resoldering or
Replace RM301

2-4 2-5

WIRING DIAGRAM

2-6 2-7

BLOCK DIAGRAM

2-8 2-9

CIRCUIT DIAGRAMS

1. SMPS(POWER) CIRCUIT DIAGRAM

NOTES) Symbol denotes AC ground.

NOTES) Symbol denotes DC chassis ground.

NOTE) Warning

NOTE) Parts that are shaded are critical
NOTE) With respect to risk of fire or
NOTE) electricial shock.

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-10 2-11

2. POWER INTERFACE CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-12 2-13

3. µ-COM(MAIN) CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-14 2-15

4. SERVO CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-16 2-17

5. I/O CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-18 2-19

6. MIC CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-20 2-21

7. USB CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-22 2-23

8. MIC & USB CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-24 2-25

9. HDMI CIRCUIT DIAGRAM(OPTIONAL PART)

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-26 2-27

10. FRONT CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

2-28 2-29

PRINTED CIRCUIT BOARD DIAGRAMS

1. MAIN P.C. BOARD DIAGRAM ( TOP VIEW )

2-30 2-31

2. MAIN P.C. BOARD DIAGRAM ( BOTTOM VIEW )

2-32 2-33

3. SMPS P.C. BOARD

2-34 2-35

4. KEY P.C. BOARD

5. TIMER P.C. BOARD

( BOTTOM VIEW )

( TOP VIEW )

( TOP VIEW )

( BOTTOM VIEW )

3-1

ELECTRICAL TROUBLESHOOTING GUIDE

1. System operation flow

SECTION 3. DVD & AMP PART

Power On

1. 8082 initializes SERVO, DSP & RISC registers

2. Write RISC code to SDRAM

3. Reset RISC

Show LOGO

Yes

Tray Close to Closed position

SLED Moves to Inner Position

1. Judge whether have disc and disc type

2. Jump to related disc reading procedure

Tray Closed?

No

SLED at Inner

Side?

No

Recieve

OPEN/ CLOSE

Key?

Yes

No

1. Execute Pressed Key & IR Key

2. Systemoperati on Routi ne Loop

1. Stop Playback & Open Tray

2. Display tray open message & LOGO

No

Receive

CLOSE Key?

Yes

3-2

2. Test & debug flow

TEST

Check the

AC Vol tage

Power PCBA (110V

or 220V)

Yes

Switch on the Power PCBA

Is the

DC Voltage

outputs OK? (-41V, -22V,

-26.5V, ±12V, 5.6V, 3.3V,
5V, 7V, 32.5V)

Yes

Are 3.3V and 5V DC

outputs normal on main

PCBA?

Yes

Update
FLASH

successfully?

No

No

No

No

Check the POWER PART

Check the POWER PART

Check the regulators or diode.

1. Check 27MHz system clock.

2. Check systemreset circuit.

3. Check FLASH R/Wenable signal PRD,
RWR.

4. Check FLASH Memory related circuit.

Yes

Replace FLASH

A

3-3

A

ES8381

Check connection lines between
SDRAM(IC502) & ES8381 and
the SDRAM is damaged.

ES8381

VIDEO outputs

properly?

Normal
OPEN_SW,
CLOSE_SW

signal?

Check the related circuit of ES8381
IC501 Pins133, 134, 137, 138, 139, 140

Check the Tray control IO pins on
ES8381.

Check the Tray control amplifyung
circuit IC401.

3-4

B

Motor

Driver DRV_MUTE

pin is High?

Motor

Driver DRV_MUTE

pin is High?

SLED+ and

SLED- output

properly?

Check the connection line of
DRV_MUTE

Check the related circuit of
SLEGN

Check Focus connection on
ES8381 and motor driver.

3-5

C

Check the laser power circuit on
ES8381 and connecting to
power transistor.(Q405, Q406)

Collector
voltage of power
transistor is OK?

(Q405, Q406)

Proper

RF signal on ES8381

Check the RF connection
between IP9009 and ES8381.

Proper

SPINDLE signal on

ES8381

SPNP

SPNN output

properly?

Check the related circuit on
ES8381 RF signal.

ES8381.

3-6

D

Proper

signals on A, B, C,

D of ES8381

Proper

CD-DVDCT signal

on ES8381

Check CD_DVDCT connection
between IP9009 and ES8381

Proper

CD-DVDCT signal

on ES8381

Proper

TRACK signal

on ES8381

Check connections between
ES8381 and pick-up head.

Check the related circuit on
ES8381 CD-DVDCT

Check the related circuit on
ES8381.

Check the TRACK connection
on ES8381 and motor driver.

TR+ & TR-

output properly?

3-7

E

PWM IC

received correct data

stream?

Normal

PWM IC out?(IC601)

Check Digital Amp circuit
(IC701, IC702, IC703, IC704)

Check connection between
IC601 BCK, LRCK, ADATAO

Check the related circuit of
PWM.(Check Audio out
Pins54, 55, 58, 59, 61, 62,
67, 68, 70, 71, 74, 75

3-8

3. AUDIO µ-COM Circuit(DVD & AMP)

YES

Does CD/DVD appear
at FLD?

Does AV1, TV Audio, AV1 opt.
and FM 87.5 appear at FLD

OK

Does Loading appear
at FLD?

POWER ON

YES NO

YES

Does no Disc or Time
appear at FLD?

NO YES

NO

NO

NO

NO

NO

NO

Does it appear DVD Error
at FLD?

Refer to SMPS.

Refer to oscillator Circuit.

Check IC101 Reset
Waveform.

Check 3.3V line.

Check Power section
Circuit.

NO

Check power part of Main
B/D.

Check oscillator of X101.

Check if IC101 Pin41
is high.

Check if IC101 Pin15, 16,
47 are high(5V).

Check if IC101 Pin1
is high.

Replace IC101.

NO

NO

Check if DVD an Audio
Micom Insert is OK.

Check Power.

YES

Check DVD Module.

YES

Check SMPS.

YES YES

YES

YES

YES

YES

YES

3-9

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL

1) ES8381 main clock is at 27MHz(X501)

3.8V, 27MHz

FIG 1-1

2) ES8381 reset is high active.

PWR_CTL(SYSTEM µ-COM)
(IC101 PIN2)

5.2VA

Power Cord in

DVD_RESET(IC101 PIN 41)

MRST#(IC501 PIN 251)

FIG 1-2

3-10

2. SDRAM CLOCK

1) ES8381 main clock is at 27MHz(X501)

(IC502 PIN 38)

DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V

FIG 2-1

3) Flash R/W enable signal during download(Downloading)

FRD(IC503 PIN 28)

FWR(IC503 PIN 11)

FIG 1-4

3-11

3. TRAY OPEN/CLOSE SIGNAL

1) Tray open/close waveform

OPENSW(P4402 PIN3)

CLOSESW(P4402 PIN4)
OPEN(IC401 PIN 1)

CLOSE(IC401 PIN 2)

FIG 3-1

2) Tray close waveform

OPENSW(P4402 PIN3)
CLOSESW(P4402 PIN4)

OPEN(IC401 PIN 1)

CLOSE(IC401 PIN 2)

FIG 3-2

3-12

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

SLO(2.0V/1.4V/1.0V)
(IC501 PIN 209)

DRV_MUTE(5V) – (IC401 PIN 21)

SLED+(4.7V/3.6V/1.9V)
(IC401 PIN 17)

SLED-(5.3V/3.7V/2.5V)
(IC401 PIN 18)

FIG 4-1

3) Tray open waveform

OPENSW(P4402 PIN3)

CLOSESW(P4402 PIN4)
OPEN(IC401 PIN 1)

CLOSE(IC401 PIN 2)

FIG 3-3

3-13

5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)

FOO(1.5V/1.4V/1.3V)
(IC501 PIN 208)

F+(4.0V/3.6V/3.2V)
(IC401 PIN 13)

F-(4.0V/3.6V/3.2V)
(IC401 PIN 14)

FIG 5-1

6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)

DVD MDI(0V/180mV)
(IC501 PIN 188)

DVDLDO501(5.0V//3.5V)
(IC501 PIN 185)

CDLDO(5.0V/3.6V)
(IC501 PIN 186)

FIG 6-1

3-14

F+(IC401 PIN 13)

CD_DVDCT(IC501 PIN 169)

RF(IC501 PIN 196)

FIG 7-2 (DVD)

7. DISC TYPE JUDGEMENT WAVEFORMS

F+(IC401 PIN 13)

CD_DVDCT(IC501 PIN 169)

RF(IC501 PIN 196)

FIG 7-1 (DVD)

3-15

F+(IC401 PIN 13)

CD_DVDCT(IC501 PIN 169)

RF(IC501 PIN 196)

FIG 7-3 (CD)

F+(IC401 PIN 13)

CD_DVDCT(IC501 PIN 169)

RF(IC501 PIN 196)

FIG 7-4 (CD)

3-16

CD_DVDCT(IC501 PIN 169)

FOO(IC501 PIN208)

F+(IC401 PIN 13)

F-(IC401 PIN 14)

FIG 8-2 (CD)

8. FOCUS ON WAVEFORMS

CD_DVDCT(IC501 PIN 169)

FOO(IC501 PIN208)
F+(IC401 PIN 13)

F-(IC401 PIN 14)

FIG 8-1 (DVD)

3-17

9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)

SPINO(1.4V/1.8V)
(IC501 PIN 207)

SP-(3.6V/2.4V)
(IC501 PIN 192)

SP+(3.6V/4.8V)
(IC501 PIN 191)

FIG 9-1

10. TRACKING CONTROL RELATED SIGNAL(System checking)

CD_DVDCT(IC501 PIN 169)

TRO(IC501 PIN 210)

TR-(IC401 PIN 12)

TR+(IC401 PIN 11)

FIG 10-1(DVD)

3-18

CD_DVDCT(IC501 PIN 169)

TRO(IC501 PIN 210)

TR-(IC401 PIN 12)

TR+(IC401 PIN 11)

FIG 10-2(CD)

11. ES6698FD VIDEO OUTPUT WAVEFORMS

1) Full colorbar signal(COMPOSIT)

(IC501 PIN 134)

FIG 11-1

3-19

2) Y

(IC501 PIN 140)

FIG 11-2

1) Audio L/R

FIG 12-1

12. AUDIO OUTPUT FROM PWM IC

(IC602 PIN 1, 7)

3-20

BCK(IC501 PIN 155)

LRCK(IC501 PIN 156)

ASDATA3

2) Audio related Signal

ADATA0(IC501 PIN 154)

FIG 12-2

3-21

1)

• R620 → TP611
or
R621 TP612

2)

• R618 → TP609
or
R619 TP610

3)

• R612 → TP603
or
R613 TP604

4)

• R610 → TP601
or
R611 TP602

5)

• R614 → TP605
or
R615 TP606

6)

• R616 → TP607
or
R617 TP608

13. DVD & AMP WAVEFORMS

A

1

2

3

4

5

6

7

8

9

10

11

12

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

3-22 3-23

DVD & AMP CIRCUIT DIAGRAMS

1. MPEG CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

3-24 3-25

2. DSP CIRCUIT DIAGRAM

3. AMP CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

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

3-26 3-27

PRINTED CIRCUIT BOARD DIAGRAMS

1. DSP P.C. BOARD DIAGRAM

3-28 3-29

( TOP VIEW ) ( BOTTOM VIEW )

3-30 3-31

2. AMP P.C. BOARD DIAGRAM

( TOP VIEW ) ( BOTTOM VIEW )

• CABINET AND MAIN FRAME SECTION

SECTION 4. EXPLODED VIEWS

4-1 4-2

P3401

P3201

OPTIONAL
PART

A50

MIC

275

465

283

A00

465

275

465

A46

463

MAIN

463

OPTIONAL
PART

473

468

463

CABLE1

AMP

DSP

A48

463

463

463

463

NOTES) THE EXCLAMATION POINT WITHIN AN

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

OPTIONAL PART

463

250

A43

279

A44

261

CABLE2

264

SMPS

330

261

465

465

320

A47

A45

473

300

• DECK MECHANISM EXPLODED VIEW(DP-10T)

4-3 4-4

A00

012

019

013

017

439

014

435

015

018

015B

015A

016

012

440

030

001

002

003

432

A01

A02

020

012A

010

026

A03

036

025

439

024

431

435

012A

021

430

4-5

• Packing Accessory Section

827

MICRO PHONE

826

FILTER(CIRC)

808

BATTERY

900

REMOCON

803

PACKING, CASING

OPTIONAL PART

811

PLUG ASS'Y 1WAY(YELLOW)

HDMI CABLE

823

824

ANTENNA LOOP(AM)

825

ANTENNA (FM)

INSTRUCTION ASSEMBLY

801

828

AC ADAPTOR

PACKING, CASING

803

804

BAG

802

BOX

832

BLANK DISC

832

DISC

5-1

SECTION 5. SPEAKER SECTION

1. LHS-26SG/LHS-26SQ

• SATELLITE SPEAKER(LHS-26SGS/LHS-26SQS)

A80

851

861

852

862

853

850

5-2

• LHS-36SE

• PASSIVE SUBWOOFER SPEAKER(LHS-26SGW/LHS-26SQW)

953

961

A90

954

955

951

5-3

2. LHS-26SH

• SATELLITE SPEAKER(LHS-26SHS)

850

A80

851

852

853

862

861

5-4

• LHS-36SE

• PASSIVE SUBWOOFER SPEAKER(LHS-26SHW)

950

951

953

962

A90

955

961

954

952