Datasheet LH-CX245X, LH-CX246X, LH-CX247X, LH-CX640 Service manual (LG)

DVD/VCR COMBI RECEIVER
Combi Receiver System

SERVICE MANUAL

MODELS : LH-CX245(LH-CX245X)/LH-CX246(LH-CX246X)

LH-CX247(LH-CX247X)/LH-CX640(LH-CX640X)

CAUTION

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

LH-CX640(LH-CX640X) LH-CX245(LH-CX245X)

LH-CX247(LH-CX247X)

LH-CX246(LH-CX246X)

MODELS : LH-CX245(LH-CX245X)/LH-CX246(LH-CX246X)/LH-CX247(LH-CX247X)/LH-CX640(LH-CX640X)

SERVICE MANUAL

P/NO : 3829RGP015N DECEMBER, 2004

PROG./
PRESET

PROG.

CONTENTS

SECTION 1 . . . . SUMMARY

SECTION 2 . . . . CABINET & MAIN CHASSIS

SECTION 3 . . . . ELECTRICAL

SECTION 4 . . . . MECHANISM OF VCR PART

SECTION 5 . . . . MECHANISM OF DVD PART

SECTION 6 . . . . REPLACEMENT PARTS LIST

1-2

SECTION 1

SUMMARY

CONTENTS

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(VCR) .......................................1-5

SERVICE INFORMATION FOR EEPROM (DVD) ...............................................................1-6

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

1-3

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.

1-4

SERVICING PRECAUTIONS

CAUTION: Before servicing the HOME THEATER COMBI
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 HOME THEATER COMBI 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 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 HOME THEATER

COMBI 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 HOME THEATER COMBI

and/or any of its electrical assemblies unless all solid-state
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.)

1-5

SERVICE INFORMATION FOR EEPROM IC SETTING(VCR)

MODEL NAME HEX BINARY

LH-CX246 OPT1 38 00000000

OPT2 ED 00000000
OPT3 20 00000000
OPT4 8A 00000000
OPT5 41 00000000
OPT6 AF 00000000

LH-CX245 OPT1 38 00000000

OPT2 ED 00000000
OPT3 20 00000000
OPT4 8A 00000000
OPT5 41 00000000
OPT6 AF 00000000

LH-CX247 OPT1 38 00000000

OPT2 ED 00000000
OPT3 20 00000000
OPT4 8A 00000000
OPT5 41 00000000
OPT6 AF 00000000

LH-CX640 OPT1 38 00000000

OPT2 ED 00000000
OPT3 A0 00000000
OPT4 8A 00000000
OPT5 61 00000000
OPT6 AF 00000000

WR : OK I : EXIT MOVE :

F G

EDIT : DE

1. DETECT NEW EEPROM (OPTION EDIT
SCREEN)

- Eeprom EDIT screen automatically appears if

replacing Eeprom.

- Setup option data using the cursor Up/Down key

of a remote control.
(Setup upon BOM depending on OPT1~OPT6
model)

• Since an initial remote control is set to LG for LG

model, appropriately set optiona data using the
cursor Up/Down key.

2. EEPROM WRITED COMPLETE SCREEN

- Writes data on EEPROM by using REMOCON

"OK".

- If completing the option data screen with a menu

key, Powering Off is automatically done and the
option edit screen is arranged.

3. PG ADJUST

- Plays PAL SP TAPE for adjusting the AUTO PG.

- A 0:00:00 is played in the field if pressing the

front play with Remocon number "1" key played
during PAL SP.

- The 0:00:00 in the field represents position of the

TRACKING PRESET.

- "OFF" is displayed in the field if pressing the front

play key with the remocon number "1" in the sta­tus of the tracking preset pressed, and "ON" is
displayed in the field if AUTO PG operation is
automatically performed and completed.

- DECK STOP > plays if above operation is com-

pleted. Set operation is performed depending on
changed PG values. These values are stored in
the EEPROM area.

4. EEPROM INITIAL

- SETUP is displayed in the field if pressing the

FRONT REC KEY with the remocon number
"CLEAR" key pressed in the status of powering
Off.

- AUTO SEARCH is done since the initial screen

of ACMS is serviced if powering On.

- Check basic operation (PLAY/RECORD...)

EEPROM option code No. setting EEPROM option code No. setting procedure

NAME HEX BINARY
OPT1 00 00000000

OPT2 00 00000000
OPT3 00 00000000
OPT4 00 00000000
OPT5 00 00000000
OPT6 00 00000000

WR : OK I : EXIT MOVE : F G

EDIT : DE

MASKROM : R00
EEPROM : R00 LG CODE

1-6

SERVICE INFORMATION FOR EEPROM (DVD)

* 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)

MODEL

NAME

LH-CX245
LH-CX246
LH-CX247
LH-CX640

00 F7 87 05 FC 22 00 00 00 0A 00 00 00 00 00 00
00 F7 87 05 FC 22 00 00 00 0A 00 00 00 00 00 00
00 F7 87 05 FC 22 00 00 00 0A 00 00 00 00 00 00
00F78705FCA200000000000000000000

OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT OPT

123456789ABCDEFG

DETECT NEW EEPROM (OPTION EDIT SCREEN)

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 (

F D G E

) to move
to approprite position and make
changes

Press pause key once

Change will be applied when power

OFF-->ON.

1-7

SPECIFICATIONS

General

Power requirements Refer to main label
Power consumption Refer to main label
Dimensions (approx.) 430 X 81 X 360 mm (w/h/d)
Mass (approx.) 5.8 kg
Operating temperature 5˚C to 40˚C (41˚F to 95˚F)
Operating humidity 5 % to 90 %
Timer 24 hours display tape

DVD Section

Laser Semiconductor laser, wavelength 650 nm
Signal system PAL/NTSC
Frequency response DVD (PCM 96 kHz): 8 Hz to 44 kHz

DVD (PCM 48 kHz): 8 Hz to 20 kHz

CD: 8 Hz to 20 kHz
Signal-to-noise ratio More than 70 dB (analog out connectors only)
Harmonic distortion Less than 1.0%
Dynamic range More than 60 dB (DVD, CD)

Outputs

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

(C) 0.3 V (p-p) 75 ohms

VCR Section

Tape speed PAL/MESECAM; 23.39 mm/s (SP), 16.69 mm/s (LP)

NTSC (Playback only); 35.35 mm/s (SP), 16.67 mm/s (LP),

11.12 mm/s (EP)
Maximum recording time SP: 4 h (E-240 tape), LP: 8 h (E-240 tape)
Rewind time About 180 min (E-180 tape)
Input level VIDEO:1.0 V(p-p), 75 ohms, unbalanced

AUDIO: -6.0 dBm, more than 10 kohms (SCART)

-6.0 dBm, more than 47 kohms (RCA)
Output level VIDEO:1.0 V(p-p), 75 ohms, unbalanced
Signal-to-noise ratio VIDEO: More than 43 dB

AUDIO: More than 72 dB (Hi-Fi)

More than 42 dB (Mono)

Dynamic range AUDIO: More than 85 dB

Tuner Section

Tuning range FM: 87.5 - 108.0 MHz

AM: 522 - 1611 kHz

Intermediate frequency FM: 10.7 MHz

AM: 450 kHz

Amplifier(LH-CX245/LH-CX247)

Stereo mode 25W + 25W (6 ohm at 1 kHz, THD 10%)
Surround mode Front: 25W + 25W (THD 10%)

Centre: 25W
Surround: 25W + 25W (6 ohm at 1 kHz, THD 10%)
Subwoofer: 60W (8 ohm at 30 Hz, THD 10%)

Speaker Section(LH-CX245/LH-CX247)

Satellite Speaker (LHS-CX245T/LHS-CX247T) Passive Speaker (LHS-CX245W/LHS-CX247W)

Type 1 Way 1 Speaker 1 Way 1 Speaker
Impedance 8 Ω 8 Ω
Frequency Response 130 - 20,000 Hz 50 - 1,500 Hz
Sound Pressure Level 85 dB/W (1m) 82 dB/W (1m)
Rated Input Power 25W 60W
Max Input Power 50W 120W
Net Dimensions (W x H x D) 90 x 138.5 x 100 mm 160 x 350 x 345 mm
Net Weight 0.9 kg 4.5 kg

1-8

Amplifier(LH-CX246)

Stereo mode 25W + 25W (6 ohm at 1 kHz, THD 10%)
Surround mode Front: 25W + 25W (THD 10%)

Centre: 25W
Surround: 25W + 25W (6 ohm at 1 kHz, THD 10%)
Subwoofer: 60W (8 ohm at 30 Hz, THD 10%)

Speaker Section(LH-CX246)

Satellite Speaker (LHS-CX246T) Passive Speaker (LHS-CX246W)

Type 1 Way 1 Speaker 1 Way 1 Speaker
Impedance 8 Ω 8 Ω
Frequency Response 130 - 20,000 Hz 50 - 1,500 Hz
Sound Pressure Level 85 dB/W (1m) 82 dB/W (1m)
Rated Input Power 25W 60W
Max Input Power 50W 120W
Net Dimensions (W x H x D) 89 x 130 x 114 mm 160 x 350 x 333 mm
Net Weight 0.54 kg 4.5 kg

Amplifier(LH-CX640)

Stereo mode 90W + 90W (6 ohm at 1 kHz, THD 10%)
Surround mode Front: 90W + 90W (THD 10%)

Centre: 90W
Surround: 90W + 90W (6 ohm at 1 kHz, THD 10%)
Subwoofer: 150W (4 ohm at 30 Hz, THD 10%)

Speaker Section(LH-CX640)

Satellite Speaker Centre speaker Passive Subwoofer
(LHS-CX640T) (LHS-CX640C) (LHS-CX640W)

Type 2 Way 2 Speaker 2 Way 2 Speaker 1 Way 1 Speaker
Impedance 6 Ω 6 Ω 4 Ω

Frequency Response 120 - 20,000 Hz 120 - 20,000 Hz 40 - 1,500 Hz
Sound Pressure Level 82 dB/W (1m) 82 dB/W (1m) 83 dB/W (1m)
Rated Input Power 90W 90W 150W
Max Input Power 180W 180W 300W
Net Dimensions (W x H x D) 104 x 233 x 120 mm 220 x 114 x 110 mm 195 x 380 x 419 mm
Net Weight 1.0 kg 1.0 kg 6.6 kg

• Design and specifications are subject to change without notice.

Manufactured under license from Dolby Laboratories. “Dolby” and the double-D symbol are trademarks of Dolby

Laboratories. Confidential unpublished works. Copyright 1992-1997 Dolby Laboratories. All rights reserved.

“DTS” and “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc.

2-1

SECTION 2

CABINET & MAIN CHASSIS

CONTENTS

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

1. Cabinet and Main Frame Section ...........................................................................................2-2

2. Woofer Speaker Section (LHS-CX245W/LHS-CX247W) .......................................................2-3

3. Woofer Speaker Section (LHS-CX246W) ..............................................................................2-4

4. Woofer Speaker Section (LHS-CX640W) ..............................................................................2-5

5. Setellite & Center Speaker Section (LHS-CX245T/LHS-CX247T) ........................................2-6

6. Setellite & Center Speaker Section (LHS-CX246T)...............................................................2-7

7. Setellite Speaker Section (LHS-CX640T)...............................................................................2-8

8. Center Speaker Section (LHS-CX640C).................................................................................2-9

9. Packing Accessory Section ..................................................................................................2-10

2-2

EXPLODED VIEWS

1. Cabinet and Main Frame Section

A

5

4

3

2

1

BCD

467

251

467

300

OPTIONAL PARTS

252

A47

264

A44

262

266

261A

250

468

467

471

470

469

469

323

470

453

462

260

1
26

262

452

330

452

261A

452

261A

A46

275

A00

457

457

A26

276

322

274

A41

285

276B

467

289

280

A50

A43

284

283

286

277

287

288

2-3

LOCA. NO. PART NO. DESCRIPTION SPECIFICATION

951 3720RMF085A PANEL,FRONT SPK LHS-D6245W MOLD STANDARD
952 4766RM0097A FELT INSIDE 65 MM, OUTSIDE 85MM,THI
953 3091RMW099A CABINET ASSEMBLY SPK LHS-D6245W STANDARD FINE
954 5208RM0056A DUCT SPK LHS-D6245W OTHER PAPER PIP
955 6400WTTJ03A SPEAKER,WOOFER F65C-D365 TOPTONE WOOFER LHS-6
956 3701RM0104A NET ASSEMBLY SPK LHS-D6245W SP-8505
957 4766RM0005A FELT Audio WF,FE-3500SW,470X7X1T BL
959 353M050C SCREW,DRAWING BH 3.5X16 FBK
960 3610RM0046A FOOT SPK LHS-D6245W OTHER FOOT RUBB
961 6871RU9271F PWB(PCB) ASSEMBLY,SUBSET(AUDIO LHS-D6230W SUB WOOFER 2.5M, OR

2. Woofer Speaker Section (LHS-CX245W/LHS-CX247W)

956

959

959

955

957

958

961

952

954

952

951

2-4

LOCA.NO. PART NO DESCRIPTION SPECIFICATION REMARKS

951 3720RMF081A PANEL,FRONT SPK LHS-D6240W MOLD FRONT PANE
952 4766RM0084A FELT 1T BLACK EVA
953 3091RMW094D CABINET ASSEMBLY SPK LHS-D6240W CABINET ASSY
955 6400WTTJ03A SPEAKER,WOOFER CW-165B40L SAMMI WOOFER LHS-D6
956 4766RM0005A FELT Audio WF,FE-3500SW,470X7X1T BL
959 353M050C SCREW,DRAWING BH 3.5X16 FBK
960 3610RM0024A FOOT SPK LMS-230/530 OTHER (EVA) PH
961 6871RU9271F PWB(PCB) ASSEMBLY,SUBSET(AUDIO LHS-D6230W SUB WOOFER 2.5M, OR

3. Woofer Speaker Section (LHS-CX246W)

956

959

955

959

953

961

952

960

951

2-5

4. Woofer Speaker Section (LHS-CX640W)

952

953

955

951

954

A900

956

950

A900 6401RM0160A SPEAKER ASSEMBLY CW-210B150L-1 SAMMI LHS-C640W

950 5208RM0059A DUCT SPK LHS-T6540W MOLD CHROME PLA
951 3720RMM013A PANEL,AUDIO SPK LHS-T6540W MOLD FRONT (SIL
952 3701RM0110A NET ASSEMBLY SPK LHS-T6540W NET ASSY
953 6400WSMK03A SPEAKER,WOOFER CW-210B150L-1 SAMMI WOOFER 4 O
954 3091RMW107A CABINET ASSEMBLY SPK LHS-T6540W CABINET ASSY
955 4766RM0110A FELT 63*115*2T BLACK DUCT EV
956 6871RU9251A PWB(PCB) ASSEMBLY,SUBSET(AUDIO ASSY FE-5 000WE ROUND 2P TERMIN
957 3610RM0009A FOOT LXS-330, EVA(BLACK) PHI15X1T,

A

2-6

5. Setellite & Center Speaker Section (LHS-CX245T/LHS-CX247T)

861

850

862

851

852

862

860

854

861

853

LOCA. NO. PART NO. DESCRIPTION SPECIFICATION

850 3701RM0103A NET ASSEMBLY SPK LHS-D6245T SP 8505
851 6400WTTC04A SPEAKER,FULLRANGE F30C-D366-2 TOPTONE W OOFER 6OH
852 4930RM0025A HOLDER AIR CO
853 3110RMP044A CASE LHS-D6245T MOLD STAND
854 6871RU4116B PWB(PCB) ASSEMBLY,SUBSET(AUDIO FE-3620TE 2P NEW TERMINAL 150M
860 353M025C SCREW,DRAWING TAPTITE, 3X10 FBK
861 353M025W SCREW,DRAWING + 2 D3.0 L14.0 MSWR3/FZB
862 353M025V SCREW,DRAWING + 2 D3.0 L6.0 MSWR3/FZB

VER LH-6230TE

ARD

2-7

6. Setellite & Center Speaker Section (LHS-CX246T)

852

860

851

861

854

853

850

LOCA.NO. PART NO DESCRIPTION SPECIFICATION REMARKS

850 3701RM0093A NET ASSEMBLY SPK LHS-D6240T SP-8505
851 6400WTTC04A SPEAKER,WOOFER MSF-80SB20L-1 SAMMI WOOFER 6OH
852 4930RM0046A HOLDER
853 3110RMP042A CASE LHS-D6240T MOLD REAR CASE
854 6871RU4116B PWB(PCB) ASSEMBLY,SUBSET(AUDIO FE-3620TE 2P NEW
860 353M025G SCREW,DRAWING TAPTITE, 3X10 FZMY
861 353M025H SCREW,DRAWING TAPTITE, 3X16 FZMY

SPK LHS-D6240T MOLD PREVENTION

TERMINAL 150M

2-8

7. Setellite Speaker Section (LHS-CX640T)

852

853

A800

855

854

851

850

856

857

A800 6401RM0158A SPEAKER ASSEMBLY MSF-90SB90L SAMMI LHS-C640T SV

850 3530RMP044A GRILLE LHS-E6740T PRESS BK 0.6T
851 3720RMM015A PANEL,AUDIO SPK LHS-E6740T/C MOLD FRONT
852 6400DSMX02A SPEAKER,TWEETER DT-11ND-1 SAMMI TWEETER(DOME)
853 6400WSMC05A SPEAKER,WOOFER MSF-90SB90L SAMMI WOOFER 6 OHM
854 3110RMP073A CASE LHS-E6740T MOLD REAR
855 6871RU0038A PWB(PCB) ASSEMBLY,SUBSET(AUDIO LHS-C640/T6745/E740 STANDARD 2
856 3040RMP037A BASE LHS-E6740T MOLD BOTTOM STAND
857 3610RM0044A FOOT SPK LHS-T6540T/C OTHER EVA PHI

2-9

8. Center Speaker Section (LHS-CX640C)

A700

755

750

752

751

754

753

756

756

A700 6401RM0159A SPEAKER ASSEMBLY MSF-90SB90L SAMMI LHS-C640C SV

750 3530RMP044B GRILLE LHS-E6740C PRESS BK 0.6T
751 3720RMM015A PANEL,AUDIO SPK LHS-E6740T/C MOLD FRONT
752 6400DSMX02A SPEAKER,TWEETER DT-11ND-1 SAMMI TWEETER(DOME)
753 6400WSMC05A SPEAKER,WOOFER MSF-90SB90L SAMMI WOOFER 6 OHM
754 3110RMP072A CASE LHS-E6740C MOLD REAR
755 6871RU0038A PWB(PCB) ASSEMBLY,SUBSET(AUDIO LHS-C640/T6745/E740 STANDARD 2
756 3040RMP036A BASE LHS-E6740C MOLD BOTTOM STAND
757 3610RM0044A FOOT SPK LHS-T6540T/C OTHER EVA PHI

2-10

BATTERY

CABLE, COAXIAL

CABLE SET ASS’Y, RF

OPTIONAL PARTS

INSTRUCTION ASSEMBLY

BOX

REMOCON

BAG

PACKING

PLUG ASS’Y 1WAY(YELLOW)

ANTENNA LOOP(AM)

ANTENNA (FM)

PLUG ASS’Y 2WAY

PACKING, CASING

PACKING, CASING

PACKING, CASING

810

811

812

824

825

826

801

802

806

CABLE, COAXIAL

822

808

900

804

803

803A
803B

803C

FILTER

9. Packing Accessory Section

3-1

SECTION 3

ELECTRICAL

CONTENTS

OVERALL WIRING DIAGRAM .............................3-2

VCR PART

ELECTRICAL ADJUSTMENT
PROCEDURES

...........................................................3-3

ELECTRICAL TROUBLESHOOTING
GUIDE

............................................................................3-4

1. POWER(SMPS) CIRCUIT.......................................3-4

2. SYSTEM/KEY CIRCUIT..........................................3-6

3. SERVO CIRCUIT ....................................................3-7

4. Y/C CIRCUIT.........................................................3-10

5. Hi-Fi CIRCUIT.......................................................3-14

6. TUNER/IF CIRCUIT ..............................................3-17

BLOCK DIAGRAMS ...............................................3-19

1. POWER(SMPS) BLOCK DIAGRAM 1 .................3-19

2. POWER(SMPS) BLOCK DIAGRAM 2 .................3-21

3. TU/IF, NICAM & A2 BLOCK DIAGRAM ..............3-23

4. VPS BLOCK DIAGRAM .......................................3-24

5. Y/C BLOCK DIAGRAM ........................................3-25

6. Hi-Fi BLOCK DIAGRAM ......................................3-27

7. SYSTEM BLOCK DIAGRAM ...............................3-29

CIRCUIT DIAGRAMS .............................................3-31

1. POWER(SMPS) CIRCUIT DIAGRAM 1_200W....3-31

2. POWER(SMPS) CIRCUIT DIAGRAM 1_400W....3-33

3. POWER(SMPS) CIRCUIT DIAGRAM 2 ...............3-35

4. TU/IF, NICAM & A2 CIRCUIT DIAGRAM.............3-37

5. A/V CIRCUIT DIAGRAM.......................................3-39

6. HI-FI CIRCUIT DIAGRAM ....................................3-41

7. SCART(JACK) CIRCUIT DIAGRAM....................3-43

8. SYSTEM CIRCUIT DIAGRAM..............................3-45

9. TIMER CIRCUIT DIAGRAM_0TOOL ...................3-47

10. TIMER CIRCUIT DIAGRAM_5TOOL / 7TOOL ..3-49

11. TIMER CIRCUIT DIAGRAM_6TOOL..................3-51

• WAVEFORM & VOLTAGE SHEET ........................3-53

• CIRCUIT VOLTAGE CHART ..................................3-55

PRINTED CIRCUIT DIAGRAMS ........................3-59

1. MAIN P.C.BOARD ................................................3-59

2. KEY(LEFT) P.C.BOARD ......................................3-61

3. KEY(RIGHT) P.C.BOARD.....................................3-63

4. SMPS P.C.BOARD ..............................................3-65

DVD PART

ELECTRICAL TROUBLESHOOTING
GUIDE

..........................................................................3-67

1. SYSTEM OPERATION FLOW..............................3-67

2. SYSTEM TEST FLOW..........................................3-68

DETAILS AND WAVEFORMS ON SYSTEM

TEST AND DEBUGGING......................................3-74

1. SYSTEM 27MHZ CLOCK, RESET,

FLASH R/W SIGNAL............................................3-74

2. SDRAM CLOCK ...................................................3-76

3. TRAY OPEN/CLOSE SIGNAL..............................3-76

4. SLED CONTROL RELATED SIGNAL

(NO DISC CONDITION)........................................3-77

5. LENS CONTROL RELATED SIGNAL

(NO DISC CONDITION)........................................3-77

6. LASER POWER CONTROL RELATED

SIGNAL(NO DISC CONDITION) ..........................3-78

7. DISC TYPE JUDGEMENT WAVEFORM..............3-78

8. FOCUS ON WAVEFORM .....................................3-80

9. SPINDLE CONTROL WAVEFORM

(NO DISC CONDITION)........................................3-81

10. TRACKING CONTROL RELATED

SIGNAL(SYSTEM CHECKING) .........................3-82

11. MT1389 AUDIO OPTICAL AND COAXIAL

OUTPUT(SPDIF).................................................3-83

12. MT1389 VIDEO OUTPUT WAVEFORM .............3-83

13. MT1389 AUDIO OUTPUT TO AUDIO DAC .......3-84

14. AUDIO OUTPUT FROM AUDIO DAC ................3-85

15. DVD & AMP WAVEFORMS................................3-86

BLOCK DIAGRAMS ...............................................3-87

1. OVERALL BLOCK DIAGRAM_200W ..................3-87

2. OVERALL BLOCK DIAGRAM_400W ..................3-88

3. SERVO BLOCK DIAGRAM ..................................3-89

4. MPEG & MEMORY BLOCK DIAGRAM...............3-90

5. VIDEO & AUDIO BLOCK DIAGRAM...................3-91

6. DVD & AMP BLOCK DIAGRAM ..........................3-92

CIRCUIT DIAGRAMS .............................................3-93

1. MPEG CIRCUIT DIAGRAM..................................3-93

2. RF & SERVO CIRCUIT DIAGRAM ......................3-95

3. AUDIO, µ_COM

CIRCUIT DIAGRAM(DVD & AMP) .......................3-97

4. DIGITAL AMP CIRCUIT DIAGRAM

(DVD & AMP)_200W ............................................3-99

5. DIGITAL AMP CIRCUIT DIAGRAM

(DVD & AMP)_400W ..........................................3-101

6. PWM & CODEIC CIRCUIT DIAGRAM

(DVD & AMP)_200W ..........................................3-103

7. PWM & CODEIC CIRCUIT DIAGRAM

(DVD & AMP)_400W ..........................................3-105

8. INTERFACE CIRCUIT DIAGRAM

(DVD & AMP)_200W ..........................................3-107

9. INTERFACE CIRCUIT DIAGRAM

(DVD & AMP)_400W ..........................................3-109

• CIRCUIT VOLTAGE CHART_200W .....................3-111

• CIRCUIT VOLTAGE CHART_200W.....................3-115

PRINTED CIRCUIT DIAGRAMS.......................3-119

1. DVD & AMP P.C.BOARD_200W ........................3-119

2. DVD & AMP P.C.BOARD_400W........................3-121

3-2

OVERALL WIRING DIAGRAM

123456789

101112

KEY RTN 0

KEY RTN 1

5.3VA
VIDEO IN

GND

AUDIO "L" IN

GND

AUDIO "R" IN

GND

FD(-)

-29VA

FD(+)

123456789

101112

P6M01 PM601

123456789

101112

DVD VIDEO

A.GND

DVD A, 'L'

A.GND

DVD A, 'R'

A.GND

AUDIO 'L'

AUDIO 'R'

A.GND

DVD B

DVD G

DVD R

123456789

101112

PMD02 PDM02

123456789

10111213141516171819202122

23

VCC(HF)

RF

DVD-LD

DVD-PD

VOL(DVD)

GND

VC-INPUT

VCC

F

E

A

D

C

B

F(+)

T(-)

T(+)

F(-)

PICK-SEL

GND

CD-LD

CD-PD

VOL(CD)

123456789

10111213141516171819202122

23

PMD02

123456789

10

11

SPM+

SPM-

FM(+)

FM(-)

LM(-)

LM(+)

SW(OPEN)

SW(CLOSE)

GND

SW(LEAD IN)

GND

123456789

10

11

PMD03

123456789

10

32VA

32VA

GND

GND

5VA

GNDNCGND

NC

PWR SENSE

123456789

10

PSW01 PN901

1

2

3

4

5

6

7

8

9

10

11

12

CFG

12VA(CAP)

5.2VA

CAP REV 'H'

I-LIMIT

MOTOR GND

GND

12VA(DRUM)

CAP CTL

L/M CTL

DFG/PG

DRUM CTL

1

2

3

4

5

6

7

8

9

10

11

12

PMC01

1

2

3

4

5

6

7

8

9

SP A PB

SP REC

SP B PB

LP R PB

LP REC

LP A PB

Hi-Fi A PB

Hi-Fi REC

Hi-Fi B PB

1

2

3

4

5

6

7

8

9

P3D01

1

2

3

4

5

6

7

8

GND

KEY RTN 1

GND

F.A.R.IN

GND

F.A.L.IN

GND

VIDEO IN

1

2

3

4

5

6

7

8

P6603 P6602

1

2

3

4

5

6

7

8

9

10

11

12

GND

SPDIF

GND

5.2VA

AMP-CLK

AMP-ENA

M-RESET

AMP-DATA 0

AMP DATA 1

A-MUTE

GND

OPTICAL IN

1

2

3

4

5

6

7

8

9

10

11

12

CN901 PVD04

1

2

3

4

5

6

7

8

9

10

11

12

13

TUNED

STEREO

12VA

L-OUT

AGND

R-OUT

PLL-CE

PLL-DI

PLL-CLK

PLL-D0

DGND

RDS-CLK

RDS-DATA

1

2

3

4

5

6

7

8

9

10

11

12

13

PN101 PVD04

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

GND

GND

5.3VA

5.3VA

GND

3.8VA

3.8VA

GND

13VA

GND

33VA

GND

-29VA

FD(-)

FD(+)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

PSV01 PVS01

1

2

3

4

5

6

7

8

9

10

11

12

DVD ENA(M-REC)

A.GND

DVD DATA OUT(RXDO)

DVD DATA IN(TXDO)

DVD CLK(SCKO)

DVD RESET(M-RESET)

AMP DATA IN

AMP CLK

GND

AMP ENA

AMP DATA OUT

A-MUTE 'H'

1

2

3

4

5

6

7

8

9

10

11

12

PMD01 PDM01

1

2

3

4

5

6

CTL(+)

CTL(-)

A/E(+)

A/E(-)

A.REC

A.PB

1

2

3

4

5

6

P3D02

12GND

FULL ERASE

1

2

P3D03

1234567

REMOCON

GND

FLD CLK

FLD DATA

FLD ENV

VOLUMN DOWN

VOLUMN UP

1234567

P6M02 PM602

VCR

DECK

VCR MAIN

KEY BOARD

TIMER

BOARD

SMPS BOARD AMP BOARD

MD

AM/FM

TUNER

OPTION

MPEG BOARD

3-3

ELECTRICAL ADJUSTMENT PROCEDURES

1. Servo Adjustment

1) PG Adjustment

• Test Equipment

• Adjustment And Specification

a) OSCILLOSCOPE b) PAL MODEL : PAL SP TEST TAPE

MODE

PLAY

• Adjustment Procedure

a) Insert the SP Test Tape and play.

Note - Adjust the distance of X, pressing the Tracking(+) or Tracking(-) when the “ATR” is blink after the

SP Test Tape is inserted.
b) Connect the CH1 of the oscilloscope to the H/SW(W373, W374) and CH2 to the Video Out for the VCR.
c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(W373, W374), and then check the dis-

tance (time difference), which is from the selected A(B) Head point of the H/SW(W373, W374) signal to
the starting point of the vertical synchronized signal, to 6.5H ± 0.5H (416µs, 1H=64µs).

• PG Adjustment Method

a-1) Payback the SP standard tape
b-2) Press the “OK” key on the Remote controller and the “REC” key on the Front Panel the same time,

then it goes in to Tracking initial mode.
c-3) Repeat the above step(No.b-2), then it finishes the PG adjusting automatically.
d-4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data.

• CONNECTION

• WAVEFORM

V.Out

H/SW(W373, W374)

6.5 ± 0.5H

MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION

V.Out

H/SW

W373

W374

OSCILLOSCOPE

CH1CH2

V.out

H/SW

(W373, W374)

H/SW

Composite

VIDEO

6.5H(416us)

VCR PART

3-4

ELECTRICAL TROUBLESHOOTING GUIDE

1. Power(SMPS) CIRCUIT

NO 5.3VA.

Replace the F101.

(Use the same Fuse)

Is the F101 normal?

Is the TH101
normal?

Is the BD101
normal?

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

Replace the
BD101.

Replace the TH101.

Is the D105
normal?

Check or Replace
the D105.

Replace the D129.

Replace the IC106.

Replace the D127.

Replace the D126.

Replace the D125.

Replace the D124.

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

Is Vcc(12~28V) sup­plied to IC104 Pin3?

Is the D129 nor-

mal?

Is there about 2.5V
at the IC106 Vref?

Is the D127
normal?

Is the D126
normal?

Is the D125
normal?

Is the D124
normal?

Check the Main PCB
Power supply Line short?

(1) No 5.3VA (SYS/Hi-Fi/TUNER)

NO 5.0VA.

Check or Replace
the D129.

Is there about 5.3V
at the Q168 Emitter?

Does the “H” signal
appear at the Q162?

Check or Replace
the Q162.

NO

Check the µ-com
PWRCTL ‘H’

NO

YES

YES

YES

(2) No 5.0VA

NO 3.3VA.

Check or Replace
the D127.

Is there about 3.8V
at the IC162 Pin1?

Check or Replace
the IC162.

NO

YES

YES

(3) No 3.3VA

NO 12VA.

Check or Replace
the D126.

Is there about 13V
at the Q161 C?

Check or Replace
the Q161.

NO

YES

YES

(4) No 12VA

NO

NO

NO

NO

NO

3-5

NO 32VA.

Replace the F101.
(use the same Fuse)

Is the F101 normal?

Is the TH101
normal?

Is the BD101
normal?

NO

NO

NO

Replace the BD101.

Replace the TH101.

NO

NO

NO

Is the D108
normal?

Check or Replace
the D108.

Replace the D122.

Replace the IC103.

YES

YES

YES

YES

YES

YES

YES

Is Vcc(12~23V) sup­plied to IC101 Pin3?

Is the D122
normal?

Is there about 2.5V
at the IC103?

Check the Woofer Main PCB
Power supply Line short or not?

(5) No 32VA

YES

3-6

2. SYSTEM/KEY CIRCUIT

(1) AUTO STOP

(2) The unstable loading of a Cassette tape

Auto Stop

Does the SW25 waveform
appear at the IC501
Pin105?

Do the T-UP Reel Pulses
appear at the IC501 Pin49?

Is 12V applied to the

PMC01 Pin8?

Check the Drum Motor
signal.

Does 5.2V appear at the
RS501?

Check the Power Circuit.

Check the Power.

Is 5.3V applied to the
R544 ?

Refer to SMPS 5.3VA
troubleshooting.

Check the IC501
Pins68, 69, 70, 71.

Do T/UP Reel Pulses
appear at the Q514
Base terminal ?

Replace the T/UP Reel
Sensor (RS501).

Check the CST SW and
the peripheral circuitry.

Replace the IC501.

The unstable loading of a

Cassette tape

Does the “H” signal appear
at the IC501 Pin30 during
inserting the CST ?

Does the “L” signal appear
at the IC501 Pin72 during
inserting the CST?

Check the Deck
Mechanism.

Caution :

Auto stop can occur because Grease or Oil is dried up

YES

YES

YES

NO

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO NO

YES

YES YES

3-7

3. SERVO CIRCUIT

(1) Unstable Video in PB MODE

Unstable Video in
PB Mode.

Does the Noise level of the
screen change
periodically?

Do the CTL pulses appear
at the IC501 Pin8?

Is adjusting the height of
the CTL Head accurate?

Readjust the height of the
CTL Head.

Replace the IC501.

Refer to “When the Y signal
doesn’t appear on the
screen in PB Mode”.

Does the CFG waveform
appear at the IC501
Pin9?

On tracking do the CTL
pulses move?

Does the Video Envelope
waveform appear at the
IC501 Pin24?

Replace the IC501.

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

(2) When the Drum Motor

(2) doesn’t run.

Do the DFG Pulses appear
at the PMC01 Pin11?

Replace the Cap M.

Aren’t the foil patterns and
the Components between
IC501 Pin104 and PMC01
Pin11 short?

Replace the IC501.

Refer to “(2)
No 12VA of Power section”

Do the Drum PWM Pulses
appear at the IC501
Pin107?

Aren’t the foil patterns and

the Components between
IC501 Pin107 and PMC01
Pin12 short?

Do the DFG Pulses appear

at the IC501 Pin104?

Do the Drum PWM Pulses
appear at the IC501
Pin107?

Aren’t the connecting patterns and the Components
between IC501 Pin107 and PMC01 Pin12 short?

When the Drum Motor
doesn’t run,

Does 12V appear at the
PMC01 Pin8?

Does 2.8V appear at the
PMC01 Pin12?

Check the connector
(PMC01) and the Drum
Motor Ass’y.

NO

YES

YES

YES

NO

NO

NO

NO

NO

YES

YES

YES

3-8

Does the CFG signal appear at the
PMC01 Pin1?

Does the PWM signal appear at the
IC501 Pin108?

Does 2.8V appear at the PMC01?

Check the PMC01 and the Capstan
Motor Ass’y.

Does the Capstan PWM signal appear at
the IC501 Pin108?

Aren’t the foil patterns and Components
between IC501 Pin108 and PMC01
Pin9 short?

Does the CFG signal come into the
IC501 Pin9?

Aren’t the foil patterns and Components
between IC501 Pin108 and PMC01
Pin9 short?

2. SERVO CIRCUIT

(3) When the Capstan Motor doesn’t run,

NO

NO

NO

YES

YES

YES

When the Capstan Motor doesn’t run,

Does 12VA appear at the PMC01?

YES

Replace the IC501.

YES

NO

NO

YES

Refer to “SMPS(CAPSTAN/12Volt)
Trouble Shooting”.

Aren’t the foil patterns and component

between IC501 Pin9 and PMC01
Pin1 short?

Check the Capstan Motor Ass’y.

NO

3-9

2. SERVO CIRCUIT

(4) KEY doesn’t working

KEY doesn’t working.

Is 5V applied to the IC501
Pin36?

Does LED or FLD change
when a function button is
pressed?

Refer to “SMPS 5.3VA
Trouble Shooting”.

Replace the defective
switches.

YES

NO

NO

3-10

4. Y/C CIRCUIT

(1) No Video in EE Mode,

No Video in EE Mode

Check the 24Pin of Tuner.

Does the Video signal
appear at the IC301 Pin48?

Is 5V applied to the IC301
Pins18, 24, 42, 55, 72, 91?

Does the Video signal
appear at the IC301 Pin65?

Does the Video signal
appear at the IC501 Pin19?

Does the Video signal
appear at the Emitter termi­nal of the Q307, Q308?

Check the 5.2VT, 5.3VA
Line. (Power Circuit)

Is I2C BUS signal applied to
the IC301 Pins68, 69?

Check C316. (AGC)

Chck the path of the signal
between the IC301 Pin65
and IC501 Pin17.

Replace the IC301.

Does the 12VT, 5.3VA
appear at the Emitter termi­nal of the Q804, Q308.

Replace the Q804, Q308.

Check the 12VT, 5.3VA
Line. (Power Circuit)

Check the System Circuit.
(Refer to ‘SYSTEM I2C BUS
CHECK Trouble Shooting’)

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

3-11

3. Y/C CIRCUIT

(2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode,

Is 5.2VT, 5.3VA applied to the
IC301 Pins24, 42, 55, 72, 91?

Is the I2C Bus siganl applied

to the IC301 Pins68, 69 ?

Does the normal RF signal
appear at the IC301 Pin78?

Check the line of the 5.2VT,

5.3VA Line. (Power Circuit)

Check the System Circuit.
(IC501 Pin105)

Check the V.H.S/W level.
(Check R303, R304)

Replace the IC301.

Refer to ‘SYSTEM I2C BUS
CHECK Trouble Shooting’.

Is the V.H.S/W signal
applied to the IC301 Pin70?

Is V.H.S/W “H” about 3.4V
at the IC301 Pin70?

Clean the Drum.

Check the path of the
Y(Luminance) RF signal.
(Check C327)

Check the path of the
Y(Luminance) RF signal.
(Check the C312)

Does the Y(Luminance) RF
signal appear at the IC301
Pin76?

Is the Y(Luminance) Video
waveform showed up at
theIC301 Pin43?

Replace the IC301.

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

YES

3-12

3. Y/C CIRCUIT

(3) When the C(Color) signal doesn’t appear on the screen in PB Mode,

Is 5.2VT/5.3VA applied to the
IC301 Pins24, 42, 55, 72, 91.

Is the Color Rotary signal
applied to the IC301
Pin70?

Check the line of the 5.2VT/

5.3VA Line. (Power Circuit)

Replace the X301.

Check the Color Pass.

Check the Color Rotary

Circuit. (IC501 Pin99 )

Check the Color Rotary
level. (Check the R303)

Does the X301(4.43MHZ)
oscillate?

Replace the IC301.

Does the Color signal
appear at the IC301 Pin21?

Is Color Rotary “H”
about 3.4V?

Replace the IC301.

NO

NO

NO

YES

YES

YES

YES

NO

NO

NO

YES

Does the Color signal
appear at the IC301
Pin25 ?

3-13

3. Y/C CIRCUIT

(4) When the Video signal doesn’t appear on the screen in REC Mode,

Is the EE signal normal?

Is 5.2VT/5.3VA applied to the
IC301 Pins24,42,55,72,91?

Does the RF signal appear
at the IC301 Pin78?

Check EE Mode.

Check the System of REC
‘H’. (the IC501 Pin47
/ the D301)

Replace the IC301.

Check the line of the 5.2VT/

5.3VA Line.(Power Circuit)

Check PB Mode.

Is the REC ‘H’ signal
(about 4V) applied to the
IC301 Pin80?

Check the circuit of the
IC301 Pins85, 86.

Check REC Luminance
Pass & Color Pass.

Does PB Mdoe operate
normally?

Does the REC RF signal
appear at the IC301
Pins88,89,94,95?

Check the Drum &
Drum Connector

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

YES

YES

YES

3-14

5. Hi-Fi CIRCUIT

(A) No Sound(EE Mode)

YES

No Sound.

Check the TU Audio of IC801
Pins1, 3.

Check the DVD Audio of IC801
Pins4, 5.

Check the AV1 Audio of IC801
Pins6, 7.

Check the AV2 Audio of IC801
Pins8, 9.

Check the AV3 Audio of IC801
Pins10, 11.

Check the Vcc of IC801 Pins34, 40,
IC802 Pin4.

YES

Check the IIC Clock and DATA at
IC801 Pins42, 43, IC802 Pins32, 33.

YES

Check the Audio of IC801 Pins16, 17.

YES

Check the Audio of IC802 Pins22, 26.

YES

Check the JK801.

Check the IC751 Pins30, 31.

NO

Check the DVD MODULE.
(P8D01 Pins3, 5).

NO

Check the Scart1 Jack.
(SC901 Scart1 Audio in Pins2, 6).

NO

Check the front Jack.
(PM602 Pins3, 5).

Check the Scart2 Jack.
(SC901 Scart2 Audio in Pins2, 6).

NO

NO

Check the Power 5.2V, 12VT.

YES

NO

Check the IC501 Pins59, 60.

NO

Replace IC801.

Replace IC802.

NO

NO

3-15

3. Y/C CIRCUIT

(B) Hi-Fi Playback

YES

YES

YES

YES

PB mode

No Sound.

Check the Vcc of IC801
(Pins34, 40)

Check the Hi-Fi Selection switch.
(IC801 Pin41) and the Tape quality.

Is the RF Envelope at
IC801 Pin44 over 2Vp-p?

YES

Check IC801 Pin42(Data),
Pin43(Clock)

YES

Do Audio Signals appear at
IC801 Pin16(L-CH), 17(R-CH)?

YES

Do Audio Signals appear at
IC802 Pin10(L-CH), 16(R-CH)?

YES

YES YES

Do Audio Signals appear at
IC802 Pins22, 26?

Do Audio Signals appear at
JK801?

Check Power 5.2V, 12VT.

NO

Check IC501 Pin25
(A.H/SW)

NO

NO

Check the parts of µ-COM
(IC501 Pins59, 60)

NO

Check the Connection at
P3D01 Pins7, 9.

NO

Check the A.IN line of
IC802(C808, C809)

NO

Check the Vcc of IC802
Pin4.

Replace IC802.

Check the Jack(JK801)

NO

NO

Check Power.

NO

3-16

(C)

Hi-Fi REC.

It is impossible to record Hi-Fi Audio
signal.

Check Vcc of IC801.(Pins34, 40)

YES

YES

Check IC801 Pin42(Data), Pin43(CLOCK).

YES

Do Audio signals appear at IC801
Pins16, 17?

YES

Do FM Audio signals appear at IC801
Pin36?

YES

Check the Contact Point of Drum
Connector if good then Replace the Drum.

YES

Check Power 5V, 12VT.

NO

Check ports of µ-COM.

Check Audio input signal of IC801
Pins2, 3(TU.A.), 4, 5(DVD.A.),
6, 7(AVI.A.), 8, 9(AV2.A.), 10, 11(AV3.A.).

NO

Replace IC801.

NO

NO

3-17

6. Tuner/IF CIRCUIT

(A) No Picture on the TV screen

No picture on the TV
screen

Does the Video signal at
the TU701 Pin19.

YES

YES

YES

Is +33VT applied to TU701
Pin7?

YES

Is +5VT applied to TU701
Pin4?

NO

Does Sync appear at
IC501 Pin111.

NO

Does the Video signal at
the IC501 Pin19.

YES

NO

Does the Video signal at
the IC301 Pin61.

YES

NO

NO

Does the Video signal at
the IC802 Pin30.

Check the signal flow from IC802
Pin30 to SC901 Pin19.

YES

Check 33VT line.

NO

Check 5VT line.

NO

YES

Does the Clock signal
appear at TU701 Pin5?

Check the lIC Clock Signal
of µ-COM Pin59.

NO

YES

Does the data signal
appear at TU701 Pin3?

Replace Tuner.

Check the signal flow from
TU701 Pin19 to IC301 Pin48.

Check the signal from IC301
Pin65 to IC501 Pin17.

Check the signal from IC501
Pin19 to IC301 Pin56.

Check the signal from IC501
Pin61 to IC802 Pin1.

Check the lIC Data Signal
of µ-COM Pin60.

NO

3-18

(B) No Sound

No Sound.

Check the Vcc of IC751 Pins1, 11, 19,
22, 33.

YES

Check 5.2V Line.

NO

Check the Tuner SiF signal at IC751
Pin2.

YES

Check the oscillator of IC751 Pins5, 6.

YES

Check the Audio of IC751 Pins30, 31.

YES

Check the Audio of IC801 Pins2, 3.

YES

Check the Audio of IC801 Pins16, 17.

YES

Check the Audio of IC802 Pins22, 26.

YES

Check the Signal flow from IC802
Pins22, 26, SC901 Pins1, 3.

YES

Check the Tuner SIF of TU701 Pin22.

NO

Replace X751

NO

Check the IIC Clock and Data at IC751
Pins12, 13.

NO

Check the signal flow from IC751
Pins30, 31 to IC801 Pins2, 3.

NO

Check the IIC Clock and Data at IC801
Pins42, 43.

NO

Check the signal flow from IC801
Pins16, 17 to IC802 Pins10, 16.

NO

3-19 3-20

BLOCK DIAGRAMS

1. POWER(SMPS) BLOCK DIAGRAM 1

BD101

LINE FILTER

BLOCK

( C101, C102,

L101, L102 )

!

V101

!

F101

BD101

C103

DRIVE & S/W BLOCK

QUASI-RESONANT BLOCK

( IC101, R114, R115, C123, C107,

BC101, D108, R101, D102, R102,

D103, R106, ZD102, Z101, C108,

R104, C109, C110)

DRIVE & S/W BLOCK
SOFT-START BLOCK

( R107, R108, C121, R105,

C120, C119, ZD1103, D105,

R111, BC102 )

SNUBBER

BLOCK

( R110, C115,

D104, C117 )

!

IC102

!

T101

IC103

T102

RECTIFER & SMOOTHING

FEED-BACK

BLOCK

( R122, R121, C136,

R123, R124, R125,

!

R126 )

RECTIFIER &

F102

SMOOTHING

(D123, C130, ZD121, R127)

RECTIFIER &
SMOOTHING

( D125, R129, C138 )

RECTIFIER & SMOOTHING

BLOCK

( D127, C142, L123, C146 )

BLOCK

( D122, C131, C132,

C133, C135, L121 )

BLOCK

BLOCK

RECTIFIER & SMOOTHING

BLOCK

( D124, C137, R128 )

RECTIFIER & SMOOTHING

BLOCK

( D126, C140, L123, C146 )

PSW01

32VA

PWR SENSE

PWR SENSE

BLOCK

( R184, R185 )

PSM01

FD(+)

FD(-)

-29VA
33VA
13VA

3.8VA

5.3VA

PW101

!

BR

(BK)

BL

(WH)

C113C114

!!

C122

RECTIFIER & SMOOTHING

BLOCK

( D129, C144, L124, C147 )

FEED-BACK

BLOCK

!

!

IC105

IC106

( R132, R133, C148,

R134, R135, R136,

R137 )

3-21 3-22

2. POWER(SMPS) BLOCK DIAGRAM 2

TO SYS

FD(+)

TO SYS

FD(-)

TO SYS

-29VA

TO SYS

TIMER 'H'

FD(+)

FD(-)

-29VA
GND

33VA

GND

13VA

GND

3.8VA

3.8VA
GND

5.3VA

5.3VA
GND
GND

PMS01

15
14
13
12
11
10

33VT BLOCK

(Q163, Q164,

R168, R169,

R170)

8V BLOCK

(IC160, D163,

C163, R161)

9V BLOCK

(Q162,R171,

ZD163,C175)

9
8
7
6
5
4
3
2
1

5V BLOCK

(IC163, C177)

3.5V BLOCK

(IC161, D164, C173)

3.3V BLOCK

(IC162, R172, C165)

5V BLOCK

(Q168, R178, R179,

R180, C169)

5.2V BLOCK

(Q167, C168, R175,

R176, R177)

TO TU

1
2
3
4
5
6
7
8

9
10
11
12

TO SYS

33VT

PMD03

5.3VA

5.0VA
8V

GND

9V

A.GND

3.5VA
5V

GND

3.3V

A.GND

GND

5.3VA

TO TU/SYS/ Hi-Fi

5.2V

FROM µ-COM

PWR CTL 'H'

TO AVCP
REG 5VT

REG 5V

(Q166, C166, C167,

R174, ZD161)

PWR CTL BLOCK

(Q169, C170, R181,

R182, R183)

3-23 3-24

4. VPS BLOCK DIAGRAM

14 11 10 9 8

1 4 5 6

DATA/SYNV

SLICER

CLOCK PLL

DATA

AQUISITION

IIC BUS

INTERFACE

TIMING

VPS BLOCK

IC7V1

SDA5650

151 5.2VA

358 VPS V.out

59 CLK

60 DATA

55 DAV

VSUP

CVBS

Iref

VC01

VCS

CSO

SDA

SCL

GND

PD1

EHBDA VIN

T1

PD2/

VC02

2 3 7

13 12

3. Tu/IF, NICAM & A2 BLOCK DIAGRAM

(From Power)

159

27

731

60

59

93

94

158

872

160

871

151 5.3VA

5.2VT

MOD V.IN

MSP3417

3-25 3-26

5. Y/C BLOCK DIAGRAM

(PB MODE)

90

93

96

84V.ENV

87

70

V.H.SW

C.ROTARY

DATA

CLOCK

C.SYNC

V.OUT

(MICOM)

S2 V.OUT

S1 V.OUT

SYNC IN

69 68 67

C-Delay

(1H/2H)

BPF

MAIN

CONV

ACCC LPF

CCD

LPF

ACC

DET

CNC

2521

IC201

LA70100M

IC301

LA71750M

29

18 14

PB FM EQ FM OEM

PB FM

AGC

MAIN

DE EMP

Y-LPF

YNR

SUB LPF

60dB AMP

Y/C MIX

65 63 61

46

43

Y-Delay

79 78

(REC MODE)

80

REC'H'

V.H.SW

C.ROTARY

DATA

CLOCK

C SYNC

V.OUT

MICOM

V.IN4

FRONT

V.IN3

DEC

79 78 76 75 70 69 68 67 65 59 58 54 52

50 V.IN2 S1

V.IN1 TUNER

48

46

43

33

32

31

CLK-IN

2928

4.43MHz

2721

95

94

89

88

Killer C-LPF ACC

BPF

Main

Conv

Main

Conv

DETAIL

ENH

NL

EMPHA

W/D

CLIP

IC301

LA71750M

UP REC

SP REC

(To Drum)

(To Drum)

W/D

CLIP

REC

FM EQ

Y-LPF FBC

AGC

SW

Y-DELAY

KILL DEC

REC APC

VX02 VX02

COMP

AMP

1H/2H

DELAY

YNR

29 16

2 12

IC201 LA70100M

3-27 3-28

6. Hi-Fi BLOCK DIAGRAM

IC802

A
B

Hi-Fi/

REC

10 22

16

6

12829

12 20 24

26

IC801

A.OUT

To JACK

37

Hi-Fi PB 'B'

Hi-Fi PB 'A'

Hi-Fi REC

1
2
3
4
5
6
7

10
11

21 22

36 35

16

A.OUT 'L'

A.OUT 'R'

17

AUDIO INPUT

BLOCK

VIDEO INPUT

BLOCK

AUDIO INPUT BLOCK

OSD V. IN

TU V. IN

DVD/R V. IN

DVD A.IN 'L'

DVD A.IN 'R'

TU A.IN 'R'

TU A.IN 'L'

NORMAL AUDIO

OUT(T o A VCP)

NORMAL AUDIO

IN(From AVCP)

Tu A.IN 'L'

Tu A.IN 'R'

DVD A.IN 'L'

DVD A.IN 'R'

AV1 A.IN 'L'

AV1 A.IN 'R'

AV2 A.IN 'L'

AV2 A.IN 'R'

MODULATOR

A.OUT
(To Tu)

3-29 3-30

7. SYSTEM BLOCK DIAGRAM

2fsc
R524, R514, R518,

R516, R589, C577,
C576, L501, Q504

LD(+)
LD(-)

L/M CONTROL
R525, R526

IC501

HD6432197A

DVD

VCR DATA IN

VCR DATA OUT

DVD CLK

DAV

OTPB LED 'H'

R/C IN(2W)

NC

CST SW

A.ENV

CANAL DET 'H'

3-31 3-32

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

CIRCUIT DIAGRAMS

1. POWER(SMPS) CIRCUIT DIAGRAM 1_200W

Switching Error.
IC101 is defective.

Switching Error.
IC104 is defective.

Switching Error.
IC105, 106 are defective.

No Power.
F101 is defective.

No 5.3VA.
D127 is defective.

No 3.8VA.
D127 is defective.

No 13VA.
D126 is defective.

No 33VA.
D125 is defective.

No 32VA.
D122 is defective.

Digitron Error.
D123, ZD121, D124 are defective.

No power.
BD101, TH101 are defective.

IMPORTANT SAFETY NOTICE

WHEN SERVICING THIS CHASSIS, UNDER NO CIR­CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG ELECTRONICS CORPORATION. ALL
COMPONENTS SHOULD BE REPLACED ONLY WITH
TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR-

CUIT. SPECIAL COMPONENTS ARE SHADED ON THE
SCHEMATIC FOR EASY IDENTIFICATION.

THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF­FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.

NOTE :

1. Shaded( ) parts are critical for safety. Replace only
with specified part number.

2. Voltages are DC-measured with a digital voltmeter
during Play mode.

3-33 3-34

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

2. POWER(SMPS) CIRCUIT DIAGRAM 1_400W

Switching Error.
IC101 is defective.

Switching Error.
IC104 is defective.

Switching Error.
IC105, 106 are defective.

No Power.
F101 is defective.

No 5.3VA.
D127 is defective.

No 3.8VA.
D127 is defective.

No 13VA.
D126 is defective.

No 33VA.
D125 is defective.

No 32VA.
D122 is defective.

Digitron Error.
D123, ZD121, D124 are defective.

No power.
BD101, TH101 are defective.

IMPORTANT SAFETY NOTICE

WHEN SERVICING THIS CHASSIS, UNDER NO CIR­CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG ELECTRONICS CORPORATION. ALL
COMPONENTS SHOULD BE REPLACED ONLY WITH
TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR-

CUIT. SPECIAL COMPONENTS ARE SHADED ON THE
SCHEMATIC FOR EASY IDENTIFICATION.

THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF­FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.

NOTE :

1. Shaded( ) parts are critical for safety. Replace only
with specified part number.

2. Voltages are DC-measured with a digital voltmeter
during Play mode.

3-35 3-36

3. POWER(SMPS) CIRCUIT DIAGRAM 2

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

3-37 3-38

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

EE MODE(VIDEO)
TU MODE (AUDIO)

4. TU/IF, NICAM & A2 CIRCUIT DIAGRAM

3-39 3-40

5. A/V CIRCUIT DIAGRAM

1

4

5

2

7

8

13

11

12

2

39

10

6

2

14

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

PB SECAM COLOR

REC AUDIO

PB Y+C
PB Y
PB C

REC Y+C
REC Y
REC C

REC SECAM COLOR

PB AUDIO(MONO)

WAVEFORM

Audio Tracking is failed.

IC301 Pin 84 is defective.

EE, PB Screen doesn’t appear.

Q305 is defective.

PB COLOR Signal disappear.

IC301 Pin70 is defective.

PB COLOR Signal disappear.

X301 is defective.

D301or IC301 Pin 80

REC is defective.

PB and Recording is failed.

(IC301 doesn’t operate.)

IC301 Pin 69, 68 are defective.

Normal Audio signal is not recorded.

FL301, Q301, Q306 are defective.

No mono Audio Signal

in PB MODE.

Q302, Q303, Q314

are defective.

3-41 3-42

6. Hi-Fi CIRCUIT DIAGRAM

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

PB
REC

44 Pin is defective.
Hi-Fi Audio is not appear.

IC801 Pins42, 43 aredefective.
All Audio is not appear.

3-43 3-44

7. SCART(JACK) CIRCUIT DIAGRAM

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

3-45 3-46

8. SYSTEM CIRCUIT DIAGRAM

8

76

3

4

5
5

1

2

9

WAVEFORM

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

Q501, Q503 are defective.

µ-COM is unstable.

IC505 is defective.

VCR will not operate.

X501 is defective.

CLOCK SETTING will not operate.

X502 is defective.

µ-COM will not operate.

ES501, ES502, LD501 are
defective.

Auto Rew will not working.

RS501,RS502,Q514,
Q515 are defective.

Auto stop occures.

R575, R576, R577,
R578 are defective.

Deck will not operate.

IC504 is defective.

Reset is defective.

Set dead.

3-47 3-48

9. TIMER CIRCUIT DIAGRAM_0TOOL

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

3-49 3-50

10. TIMER CIRCUIT DIAGRAM_5TOOL / 7TOOL

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

3-51 3-52

11. TIMER CIRCUIT DIAGRAM_6TOOL

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

3-53 3-54

WAVEFORM & VOLTAGE SHEET

IC301 Pin 20

PB mode
500mvp-p

IC301 Pins 38,32,31

38, 38

Video in 1Vp-p

IC301 Pin 28
PB/REC mode

4.0Vp-p

IC301 Pin 7
REC mode

1.1Vp-p

IC301 Pin 6
REC mode

2.0Vp-p

IC301 Pin 29
PB mode

2.02Vp-p

IC301 Pin 41
PB mode
400mVp-p

IC301 Pin 64
PB mode
400mVp-p

IC301 Pin 23
PB/REC mode
5Vp-p

IC301 Pin 24
PB/REC mode
5Vp-p

IC301 Pins 71 72
REC mode
340mVp-p

IC301 Pins 51 54
PB mode
300mVp-p

IC301 Pin 63
PB mode
400mVp-p

IC301 Pin 11
PB mode

3.6Vp-p

__

IC301 Oscilloscope Waveform

* IC501 Waveform Photographs

V.HSW
(IC501 Pin 105)
1V/10mS
REC/PB MODE

DV.SYNC
(IC501 PIN 109)
1V/100uS
QUE/REV MODE

CTL(+)
(IC501 Pin 3)
1V/10mS

CTL(-)
(IC501 Pin4)
1V/10mS

DFG/FG
(IC501 PIN 103,104)
1V/10mS
REC/PB MODE

CFG
(IC501 Pin9)
1V/10mS

V.IN
(IC501 Pin 17)
500mV/20uS

V.OUT
(IC501 Pin 19)
500mV/20uS
EE/PB MODE

C.SYNC
(IC501 Pin 111)

1.0V/100uS
EE/PB MODE

3-55 3-56

• CIRCUIT VOLTAGE CHART

EE PB REC

MODE

PIN NO.

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

1

2

3

4

5

6

7

8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

2.4

2.3

3.4

2.5
0

0.5
0
0

2.9

2.4

2.1

3.1
4

2.4

3.0

3.2
0
0

2.2

2.1

1.9
0

4.8

4.8

2.3

2.3

2.9

0.1

0.19
2

4.9
0

2.2

pulse

2.1

2.2

2.1

2.1

2.1

2.2

2.2
0

2.1
0

2.1

4.9

2.1

4.9

4.0
0

3.1

2.7

2.7

2.4

2.4

3.4

2.4
0

3.7
0
0

2.9

2.4

2.4

1.8
4

2.4

1.8

3.1
4

3.3

2.2

2.5

2.3
0

4.8

4.8

2.2

2.2

2.7

0.18

0.3
2

4.9
0

2.2

pulse

2.1

2.1

2.1

2.1

2.1

2.1

2.2
0

2.1
0

2.1

0.1

2.1

4.9

3.8
0

1.8

2.6

2.6

2.4

2.4

3.4

2.4
0

0.5
0
0

2.9

2.4

2.4

2.3
3
4

2.4

3.2
0

0.12

2.2

2.3

2.3
0

4.8

4.8

1.5

2.4

2.9

0.18

3.8
2

1

0.8

2.3

0.6

2.3

2.2

2.2

2.2

2.9

2.2

2.2
0

2.2
1

2.2

4.8

2.2

4.9

2.8
0
2

3.4

3.4

IC201

IC301

EE PB REC

MODE

PIN NO.

24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78

4.9

0.1

1.5
2
4

2.6
0

4.5

4.4

2.9
0

1.8

2.9

1.8
2
9
0
0

4.9

2.4
0

2.4

2.6
4

4.2

2.9

1.9
0

1.9

2.3

1.9

5.2

2.2

1.9

3.6

2.8

1.5

1.8
0

1.8
0

1.7
0

0.2

4.8

4.7
0

3.3

4.9
2

2.4

2.3

2.3

1.5

2.5

4.9

3.3

2.2

2.0
4

2.6
0

4.4

4.4
2
0

1.8

3.5

1.8
2
9
0
0

4.9

2.2

3.9

2.4

2.5
4

4.2

3.6

1.9
0

1.9

2.2

1.9

5.2

2.0

2.3

1.3

2.8

1.5

1.3
0

1.3
0

1.1
0

3.7

4.9

4.8

pulse

0

4.8

3.3

1.6

0.6

0.7

1.5

3.3

4.9

0.12

1.2
2
4

2.6
0

4.5

4.5

1.9

1.8

1.8

3.6

1.8
2
9
0
0

4.9

2.3

2.8

2.5

2.6
4

4.2
3

1.95
0

1.95

2.3

2.2

5.2
2

1.6

2.2

2.8

1.4

1.3
0

1.6
0

1.1
0

0.4

4.8

4.8

2.6
0

4.8

2.2

2.3

2.3

2.3

1.5

2.5

EE PB REC

MODE

PIN NO.

79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

100

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

1.8

0.9

1.0
0

pulse

0.5
0

0.27

0.7

0.7

0.7

0.7

4.9
0

1.7

1.7

1.7

1.7
0

2.2

2.2

2.2

0

2.6

2.6

2.6

2.6

2.6

2.7

2.58

4.52

5.2

1.8

1.8

2.0

0.26

0.27

1.9

2.47

4.93

2.26
0

2.3

2.3
0

0.52

0.078

5.2

4.5
0
0
0
0
0

1.7

0.9
1
0
0

2.6
0

0.3

0.7

0.7

0.7

0.7

4.9
0

1.7

1.7

1.7

1.7
0

2.2

2.2

2.2

0

2.6

2.6

2.6

2.6

2.6

2.7

2.5

2.2

5.2

1.8

1.8

2.1

3.9

pulse

1.9

1.4
0
0
0
0

2.3
0

2.6

3.1
0

4.5

5.2
0
0
0
0

2.5

4.6
1
0
0
0

1.3
2

0.7

0.7

0.7

0.7

4.8
0
4
4
4
4
0

2.2

2.2

2.2

0

2.6

3.5

1.3

2.6

2.6

2.7

2.5

2.2

5.2

1.7
0
2

0.4

0.16

1.8

2.4

4.8

1.7
0

2.3

2.2
0
0

0.16

5.2

4.5

5.2
0
0
0
0

EE PB REC

MODE

PIN NO.

33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87

0.18

0.26

5.2

5.2

4.8

4.8

0.21

5.18

3.1
0
0
0
0
0
0
0
0
0
0

pulse
pulse

5.2

pulse

5.2
0
0

4.9

4.7

5.1

5.1
5

3.58

2.8

5.1
0
0
0

5.2

5.2
0

0.3
0
0

1.36
0
0
0
0

3.3

5.2
0
0
0

pulse

0

0.18
0

5.2

5.2
0

4.8
0
0
0
0

4.8
0
0
0
0
0

pulse

0
0
0
0
0
0

5.2
0
0
0
0

5.1

0.2
5

3.5

pulse

5.1
0

5.2

5.2

5.2
0
0

5.1
0
0

1.3
0
0
0

0.15

3.3

5.2

2.5

2.7

3.5

pulse
pulse

0.16

0.16

5.2

5.2
0

4.8

2.3
0
0
0

4.8
0
0
0

5.1
0
0

0.1

0.1

0.26

0.26

5.1
0
0
0
0
0

4.7

5.1

5.1
5

3.6
0

0.2

5.1
0

5.2

5.2

5.2
0

5.1
0

1.6

1.3
0

2.5
0
0

3.3
0

2.5

2.7

3.6

2.8

3.1

EE PB REC

MODE

PIN NO.

88
89
90
91
92
93
94
95
96
97
98

99
100
101
102
103
104
105
106
107
108
109
110
111
112

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

4.8
0
0

4.95
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

pulse
pulse

0.26

5.2

5.1

1.5

1.5
0

2.4

2.3

0.2
0
0
0

5.1

4.8

4.7

2.5

2.5
0

pulse

0.23

5.14
0

pulse

5.1
0
0
0
0
0
0
0

4.8
0

4.9
0
0
0
0
0
0
0

5.1

2.5
0
0
0

1.4

pulse

2.5

2.5
0
0
0
0
0
0

5.1

1.5

1.5
0

2.4

2.3

pulse

0
0
0

5.1

4.8

4.7

2.5

2.5
0

pulse
pulse

5.1
0

pulse

5.1
0
0
0
0
0
0
0

4.8
0
0
0

pulse

0
0
0
0
0

5.2

2.6
0

0.29
0

1.38

1.39

2.6

2.6
0

2.7
0
0
0
0

5.1

1.5

1.5
0

2.4

2.3

pulse
pulse
pulse

0

5.1

4.8

4.8

pulse
pulse
pulse
pulse
pulse

5.1
0

pulse

5.1
0
0
0
0
0
0
0

EE PB REC

MODE

PIN NO.

30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

2.8

2.8
0

5.1

4.2
0

2.8
0
0
0

2.8

2.8

2.5

2.4
0

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8
0

3.87
0
0
6
6
0
6
6

4.57

3.82

3.86

3.87

3.87

0.8
0

3.84

3.86

0.79

3.87

3.87

3.86
12

0.6

0.63

0.63

0
0

2.8

2.8
0

5.1

4.2
0

2.8
0
0
0

2.8

2.8

2.5

2.4
0

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8
0

3.87
0
0
6
6
0
6
6

4.5

3.8

3.8

3.8

3.8

0.8
0

3.8

3.8

0.7

3.8

3.8

3.8

12

0.6

0.6

0.6
0
0

2.8

2.8
0

5.1

4.2
0

2.8
0
0
0

2.8

2.8

2.6

2.4
0

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8
0

3.8
0
0
6
6
0
6
6

4.5

3.8

3.8

3.8

3.8

0.8
0

3.8

3.8

0.8

3.9

3.9

3.9

12

4.2

4.2

4.2

4.2
0

IC751

IC801

EE PB REC

MODE

PIN NO.

40
41
42
43
44

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

1

2

3

4

5

6

7

8

9
10
11
12
13
14

5
0

4.7

4.8
0

3

12

2.7

12

2.9

5.7

5.7
0

5.1

5.6

11.4

5.7
0

5.6

0.1

5.6
0
0
0

5.7

5.7

5.7

5.6

5.7

5.7

5.7

5.6

5.2

1.4

2.1

3.5

4.7

4.8
0

3.6

0.1

0.8
0

0.7

0.7

0.1

1.4

3.0
0

1.4

0.1

5.2

2.6

5

0.9

4.7

4.6

3.3

3.1
12

2.7
12

2.9

5.7

5.7

5.6

0

5.6

11.4

5.7

0

5.6

0.1

5.6

0
0
0

5.7

5.7

5.7

5.6

5.7

5.7

5.7

5.6

5.2

1.4

2.3

3.5

4.7

4.8

0

3.1

0.1

0.8

0

0.7

0.7

0.1

1.4

2.8

0

1.5

0.1

5.2

2.6

5

0.9

4.8

4.8

0.7

2.9
12

2.7
12

3

5.7

5.7

5.7

0

5.7

11.5

5.7

1.6

2.7

5.7

0
0
0

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.2

2.3

1.8

3.5

3.5

4.8

4.9

0

1.5

2.6

0.85
0

0.85

0.79

2.6

1.5

1.5
0
0

2.6

5.2

1.6

IC802

IC901

IC501

3-57 3-58

EE PB REC

MODE

PIN NO.

15
16

0

1.5

0

1.5

0

1.6

EEE

EE Mode PB Mode REC Mode

CCCBBB

Tran­sistor

Q110
Q111
Q112
Q113
Q114
Q115
Q116
Q117

Q118
Q301
Q302
Q303
Q304
Q305
Q306
Q308
Q309
Q501
Q502
Q503
Q504
Q514
Q515
Q5S1
Q751
Q804

-22

5.23

12.1

5.24

33.6
0

5.24
5
0
0

4.9

0.2

0.13

2.5

4.9

2.6

2.9
0
0

5.2
0
0
0

0.36
0

2.6

-21.8

5.24
12

5.24

33.4

0

5.2

5
0
0

4.9

0
0

2.7

4.9

2.8

3.2

0
0

5.23

0
0
0
0
0

2.8

-22

5.23

12.1

5.24

33.5
0

5.2
5
0
0

4.9

-7.8

-7.8
3

1.9
3

3.5
0
0

5.2
0
0
0

0.5
0

3.1

-22

5.1

13.9

5.18

33.5
0

5.2

5.23
0

4.9
0
0
0
0

4.9
0
0
0

3.7

5.2

3.8

5.2
0

2.52

3.8
0

-21.8

5.1

13.5

5.18

33.2
0

5.2

5.24
0

4.9

4.86
0
0
0

4.9
0
0
0

2.4

5.2

3.8

Pulse
Pulse

2.5

3.8
0

-22
5

13.4

5.17

33.3
0

5.2

5.2
0

1.6

-14.4
0
0
0

4.6
0
0
0

2.4

5.2

3.7

Pulse
Pulse

3

3.7
0

-21
0

12.7

4.46

32.8

0.74

4.48

5.7

0.68
0

4.9
0

-0.13

1.8

4.9

1.9

2.3

0.68

0.23

4.5

0.62
0

4.95
0
0

1.9

-21
0

12.7

4.46

32.4

0.74

4.49

5.7

0.67
0

4.25

0.7

0.7
2

4.9

2.1

2.5

0.68

0.23

4.5

0.6

Pulse
Pulse

0
0
2

-21
0

12.7

4.47

32.5

0.74

4.48

5.7

0.68

0.8

4.9

-14.3

-14.3

2.3

2.2

2.4

2.8

0.67

0.2

4.5

0.6

Pulse
Pulse

0
0

2.4

3-59 3-60

PRINTED CIRCUIT DIAGRAMS

1. MAIN P.C.BOARD

3-61 3-62

2. KEY(LEFT) P.C.BOARD

( 0 TOOL )

( 5 TOOL / 7 TOOL )

( 6 TOOL )

3-63 3-64

3. KEY(RIGHT) P.C.BOARD

( 0 TOOL )

( 5 TOOL / 7 TOOL )

( 6 TOOL )

3-65 3-66

4. POWER P.C.BOARD

( 0 TOOL )

( 5 TOOL / 6 TOOL / 7 TOOL )

LOCATION GUIDE

3-67

ELECTRICAL TROUBLESHOOTING GUIDE

1. System operation flow

Power On

No

Yes

Yes

Yes

No

No

No

Show LOGO

Tray Closed?

Tray Close to Closed position

SLED Moves to Inner Position

Recieve

OPEN/ CLOSE

Key?

Receive

CLOSE Key?

1. Stop Playback & Open Tray

2. Display tray open message & LOGO

1. Execute Pressed Key & IR Key

2. Systemoperati on Routine Loop

1. Judge whether have disc and disc type

2. Jump to related disc reading procedure

SLED at Inner

Side?

1. 8032 initializes SERVO, DSP & RISC registers

2. Write RISC code to SDRAM

3. Reset RISC

DVD PART

3-68

2. SYSTEM Test flow

TEST

Check the AC Voltage

Power PCBA(110V or 220V)

YES

Switch on the Power PCBA

Is the DC Voltage

outputs OK?

(5V,1.8V,3.3V,8V,12V)

YES

Make sure the main PCBA don't

short on VCCs and switch it on.

NO

NO

Replace power PCBA or

AC transformer.

Repair or Replace Power PCBA

Is 3.3V and 1.8V DC

outputs normal on main

PCBA?

YES

Connect to PC RS232 Cable and
update the FLASH memory code.

Update FLASH

successfully?

YES

A

NO

NO

Check the regulators or related diodes.

1. Check 27MHz system clock.

2. Check system reset circuit.

3. Check FLASH R/W enable signal PRD,RWR.

4. Check RS232 SIGNALS.

5. Check FLASH Memory related circuit.

3-69

A

RESET or Power On.

Show LOGO?

YES

NO

Flash Memory operates

properly?

YES

SDRAM works properly?

YES

MT1389 VIDEO outputs

properly?

YES

Have TV signal output?

YES

Check AV cable connection

to TV set.

NO

NO

NO

NO

Check connection lines between FLASH

& MT1389 and the FLASH access time

whether is suitable or not.

Check connection lines between SDRAM

& MT1389 and the SDRAM is damaged.

Check the related circuit of MT1389.

Check the filtering and amp circuit of

TV signal.

Does Tray move

inside when it is not

at closed position?

YES

B

NO NO

Normal TROUT &TRIN

signals?

YES

Normal TRCLOSE &

TROPEN signal?

YES

Normal LOAD+ & LOAD-

signal?

YES

Check the cable connection between

main PCBA and loader.

NO

NO

Check the load OPEN & CLOSE

Check the Tray control IO pins on

Check the Tray control amplifying

switch

MT1389 & IP4504.

circuit on Motor driver.

3-70

B

Does the SLED move

to inner side when it is at

outter position?

YES

Do not put in disc and tray

close.

NO NO

Motor Driver STBY

Pin is High?

YES

Is FMSO DC Level higher

than 1.4V?

YES

SL+ and SL- output

properly?

YES

Check the cable connection with

MECHA.

NO

NO

Check the connection line of

STBY signal.

Check the related circuit of

FMSO.

Check the amp circuit on motor

driver.

Optical Lens has

movements for searching

Focus?

YES

C

NO NO

Proper FOSO outputs

to motor driver?

YES

Proper F+ & F- outputs?

YES

Check cable connect on with

pick-up head.

NO

Check FOSO connection on

MT1389 and motor dirver.

Check the amp circuit on motor

dirver.

3-71

C

Laser turns on when

reading disc?

YES

Put disc in? Laser off

YES

Disc ID is correct?

YES

NO NO

NO

NO NO

LD01 or LD02 output

Collector voltage of

power transistor is OK?

Check cable connection between

transistor ouput and pick-up

Proper RFL signal

properly?

YES

YES

head.

on MT1389?

YES

NO

Check the laser power circuit

on MT1336 and connecting to

power transistor.

Check the related circuit on

laser power transistor

Check the related circuit

on MT1389 RFL signal.

Does spindle rotate?

YES

D

Check LDO1 & LDO2 signal

NO NO

Proper DMSO signal on

MT1389

YES

SP+ & SP- output

properly?

YES

Check the cable connection

between spindle and main PCBA.

NO

Check DMSO related
circuit on MT1389.

Check the spindle control

amp circuit of motor

driver.

3-72

D

YES

Focus ON OK?

YES

Track On OK?

YES

NO

NO

Proper signals on

A,B,C,D of MT1389

YES

Check FEO signal

on MT1389

YES

Check FOSO signal on MT1389

Normal TEO Signal on

MT1389?

YES

Properly TRSO signal

on MT1389?

YES

NO

NO

NO

NO

Check connections between

MT1389 and pick-up head.

Check the FOSO connection on
MT1389 and motor driver.

Check the related
circuit on MT1389

Check the TRSO

connection on MT1389

and motor dirver.

Disc is play ?

YES

E

NO

T+ & T- output

properly?

YES

Check cable connection on

pick-up head.

Check RFO & RFLVL signal waveform.

NO

Check the tracking control

amp circuit on motor

driver.

3-73

E

Normal Audio output
when disc playback?

YES

Normal IR.VFD & Front
pannel key functions?

YES

TEST END

NO

NO

Audio DAC received

correct data stream?

YES

Normal Audio DAC

out?

YES

Check Audio filter,amplify,mute

IR.VFD Front pannel key & MT1389

Check the cable connection on

circuit.

Communications between

is normally?

YES

Front pannel.

NO

NO

NO

Check connection between MT1379

&Audio DAC.

Check the related

circuit of Audio DAC.

Check communication lines on

MT1389.

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

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

1) MT1389 main clock is at 27MHz(X501)

1.0V, 27MHz

FIG 1-1

2) MT1389 reset is low active

PWR_CTL

5.2VA

M_RESET(FRONT)

RESET Time

FIG 1-2

3-74

3-75

3) RS232 waveform during procedure(Downloading)

TXD

RXD

FIG 1-3

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

FRD

FWR

FIG 1-4

3-76

2. SDRAM CLOCK

DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V

FIG 2-1

3. TRAY OPEN/CLOSE SIGNAL

1) Tray open/close waveform

TRIN

TROUT

TROPEN

TRCLOSE

FIG 3-1

3-77

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

FMSO(2.0V/1.4V/1.0V)

STBY(3.3V)

SL+(4.7V/4.0V/2.6V)

SL-(5.3V/4.0V/3.0V)

FIG 4-1

5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)

FOSO(1.5V/1.4V/1.3V)

F+(4.0V/3.6V/3.2V)

F-(4.0V/3.6V/3.2V)

FIG 5-1

3-78

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

MDI1(0V/180mV)

LD01(5.0V//3.5V)

LD02(5.0V/3.6V)

FIG 6-1

7. DISC TYPE JUDGEMENT WAVEFORM

F+

FE

RFL

FIG 7-1 (DVD)

3-79

F+

FE

RFL

FIG 7-2 (DVD)

F+

FE

RFL

FIG 7-3 (CD)

3-80

F+

FE

RFL

FIG 7-4 (CD)

8. FOCUS ON WAVEFORM

FE

FOSO

F+

F-

FIG 8-1 (DVD)

3-81

FE

FOSO

F+

F-

FIG 8-2 (CD)

9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)

DMSO(1.4V/1.8V)

SP-(3.6V/2.4V)

SP+(3.6V/4.8V)

FIG 9-1

3-82

10. TRACKING CONTROL RELATED SIGNAL(System checking)

TE

TRSO

T-

T+

FIG 10-1(DVD)

TE

TRSO

T-

T+

FIG 10-2(CD)

3-83

11. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF)

FIG 11-1

12. MT1389 VIDEO OUTPUT WAVEFORM

1) 100%

FIG 12-1

3-84

13. MT1389 AUDIO OUTPUT TO AUDIO DAC

2) COMPOSITE VIDEO SIGNAL

FIG 12-2

FIG 13-1

3-85

FIG 14-1

14. AUDIO OUTPUT FROM AUDIO DAC

3-86

1)

• R311 → FRONT L

2)

• R303 → FRONT R

3)

• R309 → SURROUND L

4)

• R301 → SURROUND R

5)

• R307 → CENTER

6)

• R305 → WOOFER

15. DVD & AMP WAVEFORMS

3-87

BLOCK DIAGRAMS

1. Overall Block Diagram_200W

TU101

KST-ML001MV0-60L

RADIO TUNER MODULE

AVCC, APC

M

M

PICK

UP

SPINDLE

MOTOR

SLED

MOTOR

M

LOADING

MOTOR

DP-7C

IC402

IP4504A

MOTOR DRIVER

SL+, SL-

LOAD+, LOAD-

SP+, SP-

F+, F-, T+, T-

RVCC2, +P8V

LD01, LD02, IOA,

V2.0, MDI1

CD : RFO, A, B, C, D, E, F

DVD : RFO, A, B, C, D

TROUT, TRIN, ADIN

LIMIT

V1P4

IC501

MT1389DEC

MPEG & DSP

TROPEN, TRCLOSE, TRSO, FOSO, DMSO, FMSO, STBY

IC5A1

A29LV800TA-70

1M, 8BIT

FLASH

DV33

IC506

M12L64164A

64Mb, SDRAM

SD33

AD[0:7]

A[00:21]

PCE#, PRD#, PWR#

MA[00:11]

DQ[00:15]

DQM[0:1]

DCS#, DRAS#, DCAS#,

DWE#

BA[0:1], SDCLK, SDCKE

IC505

KS24C021CS

2Kb,

EEPROM

DV33

SDA

SCL

J501

RS-232

X501

27MHz

TXD

RXD

AV33, DV33

PDV03

CONTROL

SIGNAL

DVD_ENA, CLK, DATAIN

DVD_RESET

URST

DVD_DATAOUT

IC507

MM1623XFBE

VIDEO 6dB AMP

5V

AMP_ENA, CLK, DATAOUT

AMP_DATAIN

PDV02

ANA LOG A/V SIGNAL

AUDIO_L, R

LINE2, LINE3

DVD_L, R

CVBS

Y_OUT, Y_G, P_B, P_R

JK601

S-VIDEO

Y_OUT, C_OUT

Y[1:6]

D2-T1, T2, T3

IC101

LC875700B

AUDIO MICOM

REG_5VA

X101

9.8304MHz

IC730,

IC750

STA508

REG_3.3VA, 32VA

L.P.F

S.L

F.L

C

SW

F.R

S.R

L712

L711

L713

L716

L715

L714

JKS01

SPEAKER TERMINAL

505_FAULT, TH_WAR

505_PDN

IC301

PS9818

8CH. PWM

MODULATO R

REG_3.3VA

SL+/

FL+/

C+/

SW+/

FR+/

SR+/

X201

12.288MHz

PS9818_CLK, RESET, PDN

PS9818_DATA

REG-9V

RDS_CLK, DATA

OPTION

P_CE, P_CLK, P_DO

P_DI

MUTE

PN102

DL JIG

DLCLK, DLCE

DLVDD

DLRST, DLDATA

IC205

OPAMP

A_MUTE

FRONT, REAR, C/SW

DALRCK, DABCK

DN_MIX

IC203

MM1231

AUDIO S/W

IC204

OPAMP

IC206

CS5331A

6Ch. ADC

AMCLK

ADATA

Q607, Q608

REG_5VA

TUN_L, R

AUDIO_L, R

1231_CTRL

REG_9V

R135, R136

DN_MIX+/

JK602

OPT.

SPDIF

RIN, LIN

SBCK, SLRCK

3-88

2. Overall Block Diagram_400W

IC506

SD33

IC5A1

A29LV800TA-70

1M, 8BIT

DV33

FLASH

J501

RS-232

AD[0:7]

A[00:21]

DWE#

DCS#, DRAS#, DCAS#,

BA[0:1], SDCLK, SDCKE

DQ[00:15]

DQM[0:1]

M12L64164A

64Mb, SDRAM

MA[00:11]

PCE#, PRD#, PWR#

AV33, DV33

TXD

IC501

MT1389DEC

KS24C021CS

DV33

EEPROM

RXD

MPEG & DSP

IC505

2Kb,

SCL

27MHz

SDA

X501

PDV03

CONTROL

SIGNAL

DVD_DATAOUT

DVD_ENA, CLK, DATAIN

URST

ADATA

ALRCK, ABCK

AMCLK

IC204

OPAMP

DVD_RESET

AMP_ENA, CLK, DATAOUT

JK602

OPT.

AMP_DATAIN

REG_5VA

DN_MIX

DALRCK, DABCK

FRONT, REAR, C/SW

SPDIF

D2-T1, T2, T3

Y[1:6]

IC202

AK4586

ANA LOG A/V SIGNAL

AUDIO_L, R

LINE2, LINE3

6Ch. CODEC

RIN, LIN

PDV02

DVD_L, R

S-VIDEO

CVBS

Y_OUT, Y_G, P_B, P_R

5V

IC507

MM1623XFBE

VIDEO 6dB AMP

IC205

OPAMP

DN_MIX+/

JK601

Y_OUT, C_OUT

Q607, Q608

A_MUTE

12.288MHz

X201

CD : RFO, A, B, C, D, E, F

DVD : RFO, A, B, C, D

SPINDLE

DP-7C

UP

PICK

M

MOTOR

LD01, LD02, IOA,

LOADING

SLED

V2.0, MDI1

MOTOR

MOTOR

M

M

AVCC, APC

F+, F-, T+, T-

LOAD+, LOAD-

LIMIT

SP+, SP-

SL+, SL-

IC301

C+/

L742

S.L

IC710, 730

L731

L762

C

F.L

PS9818

8CH. PWM

MODULATO R

STA505

IC750, 770

L771,781

SW

JKS01

L722

F.R

FR+/

SR+/

SW+/

L711

S.R

SPEAKER TERMINAL

OVERALL BL OCK DIA GRAM

REG_9V

V1P4

TROUT, TRIN, ADIN

TROPEN, TRCLOSE, TRSO, FOSO, DMSO, FMSO, STBY

IC402

IP4504A

MOTOR DRIVER

RVCC2, +P8V

TUN_L, R

R135, R136

IC203

MM1231

9.8304MHz

AUDIO_L, R

X101

AUDIO S/W

1231_CTRL

REG_5VA

MUTE

PS9818_DATA

PS9818_CLK, RESET, PDN

IC101

LC875700B

AUDIO MICOM

P_DI

TU101

OPTION

RDS_CLK, DATA

P_CE, P_CLK, P_DO

RADIO TUNER MODULE

KST-ML001MV0-60L

DLCLK, DLCE

DLRST, DLDATA

REG-9V

505_PDN

DLVDD

DL JIG

PN102

REG_3.3VA

FL+/

SL+/

REG_3.3VA, 32VA

505_FAULT, TH_WAR

L.P.F

3-89

3. SERVO Block Diagram

ROM

FLASH

AD[0:7]

A[0:20]

X601

27MHz

X-TAL

IC501

EEP

ROM

SCL, SDA

PRD#, PWR#

PCE#

MT1389

ONE CHIP

DVDPLAYER

RS232C(MTK)

RXD, TXD

MA[0:11]

DQM0 ,DQM1

WE#,CAS#,RAS#

CS#,BA0,BA1

SDCLK

SDCKE

IC506

SDRAM

DQ[0:15]

4M x 16bit

ALPC

TRCLOSE

ADIN

IC5A1

IP4504A

STBY,V1P4

FOSO,TRSO,FMSO

DMSO,,TROPEN

Motor Driver

MDI 1

LD0 1, LDO 2, IOA

V20, PICKSEL

DVD: A,B,C,D, RFO

CD: A,B,C,D, E, F,RFO

LIMIT,TRIN,TROUT

F+, F-, T+, T-

SP+, SP-

LOAD+, LOAD-

SL+, SL-

UP

PICK

M/D

3-90

4. MPEG & MEMORY Block Diagram

VIDEO

Interface

IC505

EEPROM

Y2(Y),Y3(Color)

Y4(Y),Y5(Cb),Y6(Cr)

ASPECT(16:9)

SCL,SDA

ACLK,ALRCK,ABCK

MUTE,VSCK,VSDA

AUDIO

Interface

ASTB,SCL,SDA

ASDTA[0:3]

ASPDIF

AD[0:7]

IC506

SDRAM

64M

A[0:20]

IC5A1

PWR,PCE,PRD

(16 M )

FLASH MEMORY

CS,DCKE,MA[0:10]
DCLK,WE,CAS,RAS

DQ[0:15]
DQM0,DQM1

MT1389

IC501 (MPEG + DSP + RF)

X501

27MHz

VCR MICOM

3-91

5. VIDEO & AUDIO Block Diagram

IC507

VIDEO 6dB

Amp

IC206

AUDIO DAC

(2CH)

IC205

(OP Amp)

LPF&Buffer

CVBS

COMPONENT (R.G.B) / (Y.Pb.Pr )

SUPER VIDEO (Y/C)

(R.G.B) / (Y.Pb.Pr )

(Y/C)

INTERFACE

MPEG

MPEG

AUDIO ‘R’

AUDIO ‘R’

ACLK

ABCK

ALRCK

ADATA3

3-92

6. DVD & AMP Block Diagram

FRONT R+-

SURROUND R+ -

FRONT L+-

SURROUND L+-

CENTER

WOOFER

IC710

STA505

IC730

STA505

IC750

STA505

IC770

STA505

IC301

PS9818

IC501

MK1389

IC101

LC875700B

SDA

SCL

RESET

ADATA 0, 1, 2

8BIT micom

100ns(min bus cycle time)

64K/48K-byte ROM

or 128K-byte flash ROM

or 1536/4096-byte RAM

VFD driver

SIO

8- bit 4 ch ADC

Digital Audio Processor

6CH PCM PWM

(24Bit,192kHz)

internal system cl ock : 98.304MHz

external : 12.288MHz (8 PLL)

I/O contr o l r egister (8b i t) : SPI , I2C

data(16 or 24bit)

only AD Mode

Speaker jack

505_PDN

505_TH_WAR

IC202

AK4586

Multi CH audio CODEC

ADC 2CH (Dual bit_wide dinamic range)

DAC 6C H (Multy bit ..)

96kHz,24bit DIR

NON-PCM bit stream detect

control : serial interface

dinamic range : ADC_100 dB , DAC_106dB

Volume control (AC-3)

40V 3.5A

DMOS output stage

50+50W :

THD=10%_30V(8ohm)

80W :

THD=10%_36V(8ohm)

967879

31/32

29/30

2,3/8,9

10,11/16,17

2,3/8,9

10,11/16,17

31/32

29/30

31/32

31,32/

29.30

2,3,8,9/

10,11,

16,17

2,3/8,9

495268

625559

DO

CS

CLK

DI

INT0

INT1

RST

262522

60

32 3443 42 41 23 52

19 1718 16 14 15 44

AMCLK

7

ALRCK

ABCK

ADATA

8

9

10

REAR R

FRONT R

FRONT L

REAR L

CENTER

S/WOOFER

31

30

Analog_L

Analog_R

S/W IC

SPDIF

3

12.288MHz

12.288MHz

AMCLK

ALRCK

ABCK

3

Analog_L

Analog_R

SPDIF IN : AK4586 CS493264 PS9706 speaker

Analog L/R : MM1231 AK4586 NJM4560M DVD L/R

5V

32V

3.3V

1.8V

4.5~5.5V

IC203

MM1231

1231_CTRL

33

11 4 9 14

7

43

41

33

32

215

213

214

209

Tuner or radio tuner

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

3-93 3-84

CIRCUIT DIAGRAMS

1. MPEG CIRCUIT DIAGRAM

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

3-95 3-96

2. RF & SERVO CIRCUIT DIAGRAM

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

3-97 3-98

3. AUDIO, µ_COM CIRCUIT DIAGRAM(DVD & AMP)

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

3-99 3-100

4. DIGITAL AMP CIRCUIT DIAGRAM (DVD & AMP)_200W

4. DIGITAL AMP CIRCUIT DIAGRAM (DVD & AMP)_400W

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

3-101 3-102

5. PWM & CODEIC CIRCUIT DIAGRAM (DVD & AMP)_200W

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

3-103 3-104

5. PWM & CODEIC CIRCUIT DIAGRAM (DVD & AMP)_400W

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

3-105 3-106

6. INTERFACE CIRCUIT DIAGRAM (DVD & AMP)_200W

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

3-107 3-108

6. INTERFACE CIRCUIT DIAGRAM (DVD & AMP)_400W

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

3-109 3-110

3-111 3-112

• CIRCUIT VOLTAGE CHART(200W)

STOP PLAY

MODE

PIN NO.

IC101

(AUDIO. MICOM, LC875700B)

1 5.13 5.13

2 0.00 0.00

3 5.00 5.00

4 0.00 0.00

5 0.00 0.00

6 5.17 5.17

7 3.08 2.78

8 3.05 2.97

9 4.95 4.95

10 0.00 0.00

11 4.95 4.95

12 0.00 0.00

13 0.00 0.00

14 0.00 0.00

15 0.00 0.00

16 0.00 0.00

17 0.00 0.00

18 0.00 0.00

19 4.94 4.94

20 2.50 2.50

21 0.00 0.00

22 2.54 2.54

23 0.00 0.00

24 0.00 4.94

25 2.54 2.42

26 4.94 4.94

27 3.27 3.27

28 2.22 2.22

29 3.27 3.27

30 2.22 2.22

31 4.54 4.54

32 4.94 4.94

33 0.00 4.86

34 4.94 4.94

35 0.00 0.00

36 4.94 4.94

37 4.91 4.91

38 4.94 4.94

39 4.83 4.40

40 3.27 2.97

41 0.00 0.00

42 1.72 0.37

43 0.00 0.00

44 2.51 0.32

45 2.51 0.34

46 4.93 4.93

47 2.53 0.41

48 2.48 0.40

49 4.93 4.93

50 2.50 2.43

51 4.93 4.93

52 0.00 0.00

53 4.91 4.91

54 2.56 2.56

STOP PLAY

MODE

PIN NO.

IC103

(RESET IC, KIA7031)

IC203

(AUDIO SW, MM1231)

IC204

(OP AMP, MC4580)

IC205

(OP AMP, NJM4560)

IC301

(PWM IC, PS9818)

55 2.52 2.52

56 0.00 0.00

57 2.44 2.50

58 2.22 2.21

59 4.94 4.94

60 2.54 2.57

61 2.51 2.62

62 0.00 0.00

63 4.94 4.94

64 5.12 5.12

1 3.79 3.79

2 0.00 0.00

3 4.94 4.94

1 5.07 5.02

2 0.00 0.01

3 4.35 4.34

4 0.00 0.00

5 4.35 4.34

6 4.35 4.34

7 4.35 4.34

8 5.08 5.03

9 5.06 5.02

10 0.00 0.00

11 5.07 5.03

12 4.34 4.34

13 9.10 9.10

14 5.05 5.01

15 0.00 0.00

16 5.05 5.01

1 4.88 4.88

2 4.59 4.59

3 4.59 4.59

4 0.00 0.00

5 4.59 4.59

6 4.59 4.59

7 4.89 4.89

8 9.21 9.21

1 4.30 4.30

2 4.30 4.30

3 4.30 4.30

4 0.00 0.00

5 4.30 4.30

6 4.30 4.30

7 4.30 4.30

8 0.00 0.00

1 0.00 0.00

2 0.00 0.00

3 2.31 2.31

4 4.98 4.98

5 3.18 3.18

STOP PLAY

MODE

PIN NO.

6 2.29 2.29

7 0.48 0.48

8 0.00 0.00

9 0.00 0.00

10 3.18 3.18

11 0.00 0.00

12 0.00 0.00

13 2.31 2.31

14 0.00 0.00

15 0.00 0.00

16 0.00 0.00

17 0.00 0.00

18 0.00 0.00

19 1.62 1.62

20 1.62 1.62

21 0.00 0.00

22 3.18 3.18

23 1.18 1.18

24 0.00 0.00

25 0.00 0.00

26 1.19 1.19

27 0.00 0.00

28 0.00 0.00

29 3.18 3.18

30 1.37 1.37

31 1.52 1.52

32 1.58 1.58

33 0.99 0.99

34 2.33 2.33

35 0.00 0.00

36 1.56 1.56

37 1.56 1.56

38 0.00 0.00

39 3.18 3.18

40 1.56 1.56

41 1.56 1.56

42 2.32 2.32

43 0.00 0.00

44 0.00 0.00

45 1.56 1.56

46 1.56 1.56

47 3.18 3.18

48 1.56 1.56

49 1.56 1.56

50 0.00 0.00

51 1.55 1.55

52 1.54 1.54

53 0.00 0.00

54 1.55 1.55

55 1.55 1.55

56 3.18 3.18

57 0.00 0.00

58 1.54 1.54

59 1.54 1.54

60 0.00 0.00

STOP PLAY

MODE

PIN NO.

IC402

(MD DRIVE, IP4504A)

61 1.54 1.54

62 1.54 1.54

63 0.00 0.00

64 0.00 0.00

65 3.18 3.18

66 2.32 2.32

67 1.54 1.54

68 1.54 1.54

69 0.00 0.00

70 1.52 1.52

71 1.52 1.52

72 3.18 3.18

73 0.00 0.00

74 1.52 1.52

75 1.52 1.52

76 3.14 3.14

77 3.18 3.18

78 2.87 2.87

79 4.16 4.16

80 2.34 2.34

81 0.00 0.00

82 3.19 3.19

83 3.19 3.19

84 0.00 0.00

85 0.00 0.00

86 1.60 1.60

87 3.19 3.19

88 1.54 1.54

89 1.38 1.38

90 0.00 0.00

91 2.33 2.33

92 0.00 0.00

93 1.28 1.28

94 3.19 3.19

95 0.00 0.00

96 4.93 4.93

97 0.07 0.07

98 0.06 0.06

99 0.12 0.12

100 0.20 0.20

1 1.37 1.37

2 2.65 2.65

3 2.64 2.64

4 2.65 2.65

5 2.72 2.72

6 2.69 2.69

7 2.67 2.67

8 0.00 0.00

9 1.35 1.35

10 3.58 3.58

11 0.00 0.00

12 0.00 0.00

13 3.94 3.94

14 3.94 3.94

STOP PLAY

MODE

PIN NO.

IC501

(MPEG, MTK1389)

15 2.47 2.47

16 5.46 5.46

17 3.72 3.72

18 4.20 4.20

19 8.00 8.00

20 1.37 1.37

21 1.81 1.81

22 1.37 1.37

23 3.23 3.23

24 5.20 5.20

25 2.54 2.54

26 2.73 2.73

27 2.62 2.62

28 2.65 2.65

10 0

2 1.67 1.67

3 1.67 1.67

4 1.67 1.67

5 1.67 1.67

6 1.67 1.67

7 1.67 1.67

8 1.99 1.99

9 2.0 2.0

10 2.0 2.0

11 2.0 2.0

12 1.40 1.40

13 1.47 1.41

14 1.47 1.47

15 1.44 1.44

16 1.53 1.53

17 1.54 1.43

18 1.96 2.10

19 1.96 2.06

20 0.00 0.18

21 1.05

22 3.24 2.34

23 3.24 3.21

24 3.24 3.22

25 1.51 1.55

26 0.71 1.93

27 0.00 0

28 2.70 2.71

29 1.96 1.96

30 1.37 1.37

31 1.40 1.32

32 1.27 1.33

33 1.27 1.33

34 2.96 2.80

35 3.24 2.78

36 3.03 2.34

37 1.37 2.04

38 1.37 1.33

39 0.00 0

40 1.37 1.37

STOP PLAY

MODE

PIN NO.

41 1.37 1.37

42 1.37 1.4

43 0.00 0

44 1.57 1.57

45 1.57 1.57

46 3.28 3.28

47 2.96 2.84

48 3.28 3.28

49 0.00 0.00

50 3.26 3.24

51 0.00 0.00

52 1.80 1.80

53 1.97 2.12

54 2.00 1.89

55 1.92 1.76

56 2.14 1.45

57 2.02 1.72

58 2.04 2.23

59 1.39 1.50

60 1.12 0.02

61 0.00 0.00

62 0.00 0.00

63 1.89 1.96

64 0.00 0.00

65 3.16 3.15

66 3.28 3.27

67 1.35 0.27

68 1.41 0.62

69 1.14 0.65

70 2.59 3.00

71 0.33 1.30

72 2.19 1.80

73 3.28 3.27

74 1.72 1.71

75 1.99 2.51

76 0.00 0.00

77 0.00 0.00

78 2.00 2.08

79 0.00 0.00

80 3.27 3.27

81 1.27 1.53

82 1.58 1.52

83 0.86 1.23

84 0.69 0.96

85 0.00 0.00

86 1.49 1.30

87 1.69 1.68

88 1.40 1.32

89 0.00 0.00

90 1.17 1.17

91 1.43 1.34

92 0.31 0.31

93 2.05 1.88

94 0.00 0.00

95 3.15 2.61

STOP PLAY

MODE

PIN NO.

96 3.25 3.22

97 1.80 1.80

98 2.51 2.51

99 2.51 2.51

100 3.25 3.25

101 3.25 3.25

102 3.27 3.27

103 3.27 3.27

104 2.58 2.50

105 1.30 1.30

106 2.51 2.51

107 3.27 3.27

108 3.27 3.27

109 0.00 0.00

110 5.18 5.18

111 3.35 2.52

112 2.60 2.60

113 2.40 1.93

114 0.00 0.02

115 0.84 1.00

116 0.00 0.00

117 0.68 1.25

118 0.99 1.07

119 0.00 0.00

120 0.93 1.82

121 1.32 2.35

122 1.80 1.80

123 1.35 1.14

124 0.99 1.13

125 1.13 1.27

126 0.68 1.33

127 3.27 3.27

128 1.46 1.30

129 1.25 1.40

130 1.00 1.30

131 1.34 1.20

132 0.80 0.90

133 0.83 0.95

134 0.00 0.00

135 1.00 1.00

136 3.29 3.28

137 2.39 2.00

138 3.19 3.10

139 2.93 2.70

140 3.12 3.10

141 3.27 3.27

142 2.57 2.57

143 1.54 1.54

144 0.00 0.00

145 1.60 1.60

146 0.06 0.06

147 0.60 0.60

148 0.00 0.00

149 2.36 1.95

150 2.24 2.00

STOP PLAY

MODE

PIN NO.

151 1.42 1.46

152 1.80 1.80

153 0.60 0.37

154 1.48 1.48

155 3.27 3.27

156 1.66 1.66

157 1.23 1.70

158 0.00 0.00

159 0.07 0.00

160 0.05 0.00

161 0.00 0.00

162 1.24 1.43

163 0.00 0.00

164 1.38 1.45

165 1.55 1.59

166 1.43 1.43

167 3.27 3.27

168 3.27 3.27

169 0.77 0.77

170 0.00 0.00

171 2.75 2.90

172 2.75 2.90

173 1.80 1.80

174 3.27 3.27

175 0.00 0.00

176 2.90 2.90

177 3.27 3.27

178 0.00 0.00

179 2.89 2.89

180 0.00 0.00

181 0.00 0.00

182 3.28 3.28

183 0.00 0.00

184 0.00 0.00

185 0.00 0.00

186 0.00 0.00

187 0.00 0.00

188 0.00 0.00

189 3.27 3.27

190 1.23 1.23

191 1.23 1.23

192 2.30 2.30

193 0.00 0.00

194 0.48 0.48

195 3.28 3.28

196 0.69 0.69

197 0.00 0.00

198 2.90 2.90

199 3.27 3.27

200 0.50 0.50

201 0.00 0.00

202 0.70 0.71

203 0.62 0.69

204 3.28 3.28

205 2.90 2.90

STOP PLAY

MODE

PIN NO.

IC505

(EEPROM)

206 3.90 4.20

207 2.90 2.90

208 1.48 1.48

209 1.30 1.30

210 1.64 1.64

211 1.58 1.58

212 3.28 3.28

213 1.63 1.63

214 1.63 1.63

215 1.63 1.63

216 0.00 0.00

217 0.00 1.21

218 0.00 1.15

219 0.00 1.20

220 0.00 0.07

221 1.82 1.82

222 0.00 1.20

223 0.00 0.00

224 0.00 0.00

225 1.64 1.64

226 0.00 0.00

227 1.82 1.82

228 0.67 0.67

229 0.83 0.84

230 1.40 1.40

231 1.41 1.41

232 0.00 0.00

233 0.03 0.00

234 3.24 3.24

235 1.81 1.81

236 1.52 1.66

237 1.76 1.66

238 1.56 1.56

239 3.24 3.24

240 1.36 1.36

241 0.00 0.00

242 1.68 1.68

243 1.11 1.11

244 3.24 3.24

245 1.59 1.59

246 1.37 1.37

247 1.51 1.51

248 1.90 1.90

249 0.00 0.00

250 1.39 1.39

251 1.46 1.46

252 1.52 1.52

253 1.47 1.47

254 1.26 1.26

255 0.90 0.90

256 3.24 3.24

1 0.00 0.00

2 0.00 0.00

3 0.00 0.00

STOP PLAY

MODE

PIN NO.

IC506

(67MB DRAM)

4 0.00 0.00

5 3.27 3.27

6 3.27 3.27

7 0.00 0.00

8 3.27 3.27

1 3.26 3.26

2 1.08 1.48

3 3.27 3.27

4 1.01 1.61

5 1.02 1.60

6 0.00 0.00

7 1.33 1.40

8 0.91 1.02

9 3.26 3.26

10 0.98 0.80

11 0.69 0.73

12 0.00 0.00

13 0.82 0.80

14 3.26 3.26

15 2.39 2.38

16 3.19 3.22

17 2.93 2.95

18 3.12 3.17

19 2.78 2.90

20 1.37 2.87

21 1.64 0.96

22 0.07 0.06

23 0.39 0.61

24 2.35 2.04

25 2.35 2.05

26 1.44 1.46

27 3.27 3.26

28 0.00 0.00

29 0.99 1.40

30 1.46 0.60

31 1.63 1.47

32 1.13 1.42

33 0.02 0.00

34 0.03 0.00

35 0.00 0.00

36 0.07 0.00

37 0.67 0.00

38 1.06 1.68

39 2.73 1.91

40 0.10 0.00

41 0.00 0.00

42 1.40 1.09

43 3.26 3.26

44 1.48 0.94

45 1.44 0.80

46 0.00 0.00

47 1.51 1.34

48 1.50 1.07

49 3.27 3.26

3-113 3-114

STOP PLAY

MODE

PIN NO.

IC507

(SW, MN1623)

IC5A1

(16MB FLASH)

50 1.71 1.10

51 2.27 1.26

52 0.00 0.00

53 0.11 1.05

54 0.00 0.00

1 5.18 5.18

2 2.46 2.46

3 5.19 5.19

4 1.31 1.31

5 0.00 0.00

6 1.55 1.55

7 0.00 0.00

8 2.51 2.51

9 0.00 0.00

10 1.55 1.55

11 0.00 0.00

12 2.46 2.46

13 5.19 5.19

14 2.46 2.46

15 0.00 0.00

16 2.52 2.52

17 0.00 0.00

18 2.52 2.52

19 0.00 0.00

20 2.09 2.09

21 2.06 2.06

22 0.00 0.00

23 2.00 2.00

24 0.00 0.00

25 0.00 0.00

26 2.47 2.47

27 0.00 0.00

28 5.19 5.19

1 1.31 0.27

2 1.44 0.7

3 1.25 0.7

4 2.62 3

5 0.46 1.2

6 2.1 1.9

7 1.74 1.82

8 1.96 2.52

900

10 0 0

11 3.27 3.26

12 5.17 5.17

13 3.27 3.27

14 3.27 3.27

15 2.63 2.63

16 0 0

17 1.05 0

18 1.4 1.63

19 2.05 2.25

20 2.04 1.73

STOP PLAY

MODE

PIN NO.

IC730

(AMP, STA505)

21 0.81 1.54

22 0.8 1.75

23 2.36 1.9

24 2.21 2.12

25 1.98 2.09

26 0 0

27 0 0

28 0 0

29 1.45 1.74

30 1.64 1.14

31 0.47 1.48

32 0.85 1.24

33 0.26 0.88

34 1.06 1.08

35 0.7 0.97

36 1.27 1.00

37 3.27 3.26

38 1.49 1.3

39 1.12 1.1

40 1.64 1.72

41 1.18 1.1

42 1.4 1.3

43 1.04 1.17

44 1.42 1.33

45 2.04 1.88

46 0 0

47 0 0

48

1 0.00 0.00

2 17.27 17.27

3 17.27 17.27

4 35.31 35.31

5 0.00 0.00

6 0.00 0.00

7 35.31 35.31

8 17.29 17.29

9 17.29 17.29

10 17.27 17.27

11 17.27 17.27

12 35.31 35.31

13 0.31 0.31

14 0.33 0.33

15 35.31 35.31

16 35.31 35.31

17 35.31 35.31

18 0.00 0.43

19 0.00 0.00

20 0.02 0.00

21 4.98 4.98

22 4.98 4.98

23 3.27 3.27

24 0.00 0.00

25 2.27 2.27

26 2.27 2.27

STOP PLAY

MODE

PIN NO.

27 2.27 2.27

28 3.27 3.27

29 0.30 0.30

30 1.55 1.55

31 1.55 1.55

32 1.55 1.55

33 30.11 30.11

34 30.11 30.11

35 35.31 35.31

36 35.31 35.31

1 0.00 0.00

2 17.27 17.27

3 17.27 17.27

4 35.31 35.31

5 0.00 0.00

6 0.00 0.00

7 35.31 35.31

8 17.29 17.29

9 17.29 17.29

10 17.27 17.27

11 17.27 17.27

12 35.31 35.31

13 0.31 0.31

14 0.33 0.33

15 35.31 35.31

16 35.31 35.31

17 35.31 35.31

18 0.00 0.43

19 0.00 0.00

20 0.02 0.00

21 4.98 4.98

22 4.98 4.98

23 3.27 3.27

24 0.00 0.00

25 2.27 2.27

26 2.27 2.27

27 2.27 2.27

28 3.27 3.27

29 0.30 0.30

30 1.55 1.55

31 1.55 1.55

32 1.55 1.55

33 30.11 30.11

34 30.11 30.11

35 35.31 35.31

36 35.31 35.31

1 0.00 0.00

2 1.80 1.80

3 3.30 3.30

IC750

(AMP, STA505)

IC6V1

(REGULATOR, LD1117A)

3-115 3-116

• CIRCUIT VOLTAGE CHART(400W)

STOP PLAY

MODE

PIN NO.

IC101

(AUDIO. MICOM, LC875700B)

1 5.13 5.13

2 0.00 0.00

3 5.00 5.00

4 0.00 0.00

5 0.00 0.00

6 5.17 5.17

7 3.08 2.78

8 3.05 2.97

9 4.95 4.95

10 0.00 0.00

11 4.95 4.95

12 0.00 0.00

13 0.00 0.00

14 0.00 0.00

15 0.00 0.00

16 0.00 0.00

17 0.00 0.00

18 0.00 0.00

19 4.94 4.94

20 2.50 2.50

21 0.00 0.00

22 2.54 2.54

23 0.00 0.00

24 0.00 4.94

25 2.54 2.42

26 4.94 4.94

27 3.27 3.27

28 2.22 2.22

29 3.27 3.27

30 2.22 2.22

31 4.54 4.54

32 4.94 4.94

33 0.00 4.86

34 4.94 4.94

35 0.00 0.00

36 4.94 4.94

37 4.91 4.91

38 4.94 4.94

39 4.83 4.40

40 3.27 2.97

41 0.00 0.00

42 1.72 0.37

43 0.00 0.00

44 2.51 0.32

45 2.51 0.34

46 4.93 4.93

47 2.53 0.41

48 2.48 0.40

49 4.93 4.93

50 2.50 2.43

51 4.93 4.93

52 0.00 0.00

53 4.91 4.91

54 2.56 2.56

STOP PLAY

MODE

PIN NO.

IC103

(RESET IC, KIA7031)

IC203

(AUDIO SW, MM1231)

IC204

(OP AMP, MC4580)

IC205

(OP AMP, NJM4560)

IC301

(PWM IC, PS9818)

IC202

(CODEC, AK4586VQ)

55 2.52 2.52

56 0.00 0.00

57 2.44 2.50

58 2.22 2.21

59 4.94 4.94

60 2.54 2.57

61 2.51 2.62

62 0.00 0.00

63 4.94 4.94

64 5.12 5.12

1 3.79 3.79

2 0.00 0.00

3 4.94 4.94

1 2.77 2.71

2 1.64 1.64

3 4.94 4.86

4 0.00 0.00

5 3.27 3.27

6 0.00 0.00

7 1.46 1.47

8 0.00 1.63

9 0.00 1.60

10 0.00 1.21

11 2.30 2.41

12 0.00 0.86

13 0.00 0.61

14 0.00 0.00

15 0.00 0.00

16 1.40 0.75

17 0.00 0.00

18 0.00 0.00

19 4.94 4.93

20 0.00 0.00

21 0.00 0.00

22 4.95 4.94

23 4.95 4.94

24 2.47 2.45

25 0.00 0.00

26 2.47 2.41

27 2.49 2.40

28 2.50 2.46

29 2.50 2.46

30 2.50 2.46

31 2.50 2.46

32 2.70 2.46

33 3.16 2.46

34 4.95 4.91

35 0.00 1.19

36 0.00 0.00

37 0.00 2.42

38 0.00 0.00

39 0.00 2.42

40 0.00 0.00

STOP PLAY

MODE

PIN NO.

41 0.00 2.42

42 0.00 0.00

43 0.14 0.14

44 4.94 4.94

1 5.07 5.02

2 0.00 0.01

3 4.35 4.34

4 0.00 0.00

5 4.35 4.34

6 4.35 4.34

7 4.35 4.34

8 5.08 5.03

9 5.06 5.02

10 0.00 0.00

11 5.07 5.03

12 4.34 4.34

13 9.10 9.10

14 5.05 5.01

15 0.00 0.00

16 5.05 5.01

1 4.88 4.88

2 4.59 4.59

3 4.59 4.59

4 0.00 0.00

5 4.59 4.59

6 4.59 4.59

7 4.89 4.89

8 9.21 9.21

1 4.30 4.30

2 4.30 4.30

3 4.30 4.30

4 0.00 0.00

5 4.30 4.30

6 4.30 4.30

7 4.30 4.30

8 0.00 0.00

1 0.00 0.00

2 0.00 0.00

3 2.43 2.43

4 4.94 4.94

5 3.28 3.28

6 2.41 2.41

7 1.08 1.08

8 0.00 0.00

9 0.00 0.00

10 3.28 3.28

11 0.00 0.00

12 0.00 0.00

13 2.43 2.43

14 0.00 0.00

15 0.00 0.00

STOP PLAY

MODE

PIN NO.

IC402

(MD DRIVE, IP4504A)

16 0.00 0.00

17 0.00 0.00

18 0.00 0.00

19 1.62 1.62

20 1.61 1.61

21 0.00 0.00

22 3.28 3.28

23 0.00 1.20

24 0.00 0.00

25 0.00 0.59

26 0.00 1.20

27 0.00 0.00

28 0.00 0.00

29 3.28 3.28

30 1.50 1.50

31 1.59 1.59

32 1.62 1.62

33 0.06 0.06

34 2.44 2.44

35 0.00 0.00

36 1.60 1.60

37 1.60 1.60

38 0.00 0.00

39 3.28 3.28

40 1.61 1.61

41 1.61 1.61

42 2.44 2.44

43 0.00 0.00

44 0.00 0.00

45 0.00 0.00

46 0.00 0.00

47 3.28 3.28

48 0.00 0.00

49 0.00 0.00

50 0.00 0.00

51 1.60 1.60

52 1.60 1.60

53 0.00 0.00

54 1.60 1.60

55 3.28 3.28

56 0.00 0.00

57 0.00 0.00

58 1.60 1.60

59 1.60 1.60

60 0.00 0.00

61 1.60 1.60

62 1.60 1.60

63 0.00 0.00

64 0.00 0.00

65 3.28 3.28

66 2.42 2.42

67 1.60 1.60

68 1.60 1.60

69 0.00 0.00

70 1.60 1.60

STOP PLAY

MODE

PIN NO.

IC501

(MPEG, MTK1389)

71 1.60 1.60

72 3.28 3.28

73 0.00 0.00

74 1.60 1.60

75 1.60 1.60

76 3.24 3.24

77 3.28 3.28

78 2.95 2.95

79 4.33 4.33

80 2.42 2.42

81 0.00 0.00

82 3.27 3.27

83 3.27 3.27

84 0.00 0.00

85 0.00 0.00

86 1.64 1.64

87 3.27 3.27

88 1.61 1.61

89 1.55 1.55

90 1.21 1.21

91 2.43 2.43

92 0.00 0.00

93 1.48 1.48

94 3.28 3.28

95 0.00 0.00

96 4.89 4.89

97 0.00 0.00

98 0.00 0.00

99 0.00 0.00

100 0.00 0.00

1 1.37 1.37

2 2.65 2.65

3 2.64 2.64

4 2.65 2.65

5 2.72 2.72

6 2.69 2.69

7 2.67 2.67

8 0.00 0.00

9 1.35 1.35

10 3.58 3.58

11 0.00 0.00

12 0.00 0.00

13 3.94 3.94

14 3.94 3.94

15 2.47 2.47

16 5.46 5.46

17 3.72 3.72

18 4.20 4.20

19 8.00 8.00

20 1.37 1.37

21 1.81 1.81

22 1.37 1.37

23 3.23 3.23

24 5.20 5.20

STOP PLAY

MODE

PIN NO.

25 2.54 2.54

26 2.73 2.73

27 2.62 2.62

28 2.65 2.65

10 0

2 1.67 1.67

3 1.67 1.67

4 1.67 1.67

5 1.67 1.67

6 1.67 1.67

7 1.67 1.67

8 1.99 1.99

9 2.0 2.0

10 2.0 2.0

11 2.0 2.0

12 1.40 1.40

13 1.47 1.41

14 1.47 1.47

15 1.44 1.44

16 1.53 1.53

17 1.54 1.43

18 1.96 2.10

19 1.96 2.06

20 0.00 0.18

21 1.05

22 3.24 2.34

23 3.24 3.21

24 3.24 3.22

25 1.51 1.55

26 0.71 1.93

27 0.00 0

28 2.70 2.71

29 1.96 1.96

30 1.37 1.37

31 1.40 1.32

32 1.27 1.33

33 1.27 1.33

34 2.96 2.80

35 3.24 2.78

36 3.03 2.34

37 1.37 2.04

38 1.37 1.33

39 0.00 0

40 1.37 1.37

41 1.37 1.37

42 1.37 1.4

43 0.00 0

44 1.57 1.57

45 1.57 1.57

46 3.28 3.28

47 2.96 2.84

48 3.28 3.28

49 0.00 0.00

50 3.26 3.24

STOP PLAY

MODE

PIN NO.

51 0.00 0.00

52 1.80 1.80

53 1.97 2.12

54 2.00 1.89

55 1.92 1.76

56 2.14 1.45

57 2.02 1.72

58 2.04 2.23

59 1.39 1.50

60 1.12 0.02

61 0.00 0.00

62 0.00 0.00

63 1.89 1.96

64 0.00 0.00

65 3.16 3.15

66 3.28 3.27

67 1.35 0.27

68 1.41 0.62

69 1.14 0.65

70 2.59 3.00

71 0.33 1.30

72 2.19 1.80

73 3.28 3.27

74 1.72 1.71

75 1.99 2.51

76 0.00 0.00

77 0.00 0.00

78 2.00 2.08

79 0.00 0.00

80 3.27 3.27

81 1.27 1.53

82 1.58 1.52

83 0.86 1.23

84 0.69 0.96

85 0.00 0.00

86 1.49 1.30

87 1.69 1.68

88 1.40 1.32

89 0.00 0.00

90 1.17 1.17

91 1.43 1.34

92 0.31 0.31

93 2.05 1.88

94 0.00 0.00

95 3.15 2.61

96 3.25 3.22

97 1.80 1.80

98 2.51 2.51

99 2.51 2.51

100 3.25 3.25

101 3.25 3.25

102 3.27 3.27

103 3.27 3.27

104 2.58 2.50

105 1.30 1.30

STOP PLAY

MODE

PIN NO.

106 2.51 2.51

107 3.27 3.27

108 3.27 3.27

109 0.00 0.00

110 5.18 5.18

111 3.35 2.52

112 2.60 2.60

113 2.40 1.93

114 0.00 0.02

115 0.84 1.00

116 0.00 0.00

117 0.68 1.25

118 0.99 1.07

119 0.00 0.00

120 0.93 1.82

121 1.32 2.35

122 1.80 1.80

123 1.35 1.14

124 0.99 1.13

125 1.13 1.27

126 0.68 1.33

127 3.27 3.27

128 1.46 1.30

129 1.25 1.40

130 1.00 1.30

131 1.34 1.20

132 0.80 0.90

133 0.83 0.95

134 0.00 0.00

135 1.00 1.00

136 3.29 3.28

137 2.39 2.00

138 3.19 3.10

139 2.93 2.70

140 3.12 3.10

141 3.27 3.27

142 2.57 2.57

143 1.54 1.54

144 0.00 0.00

145 1.60 1.60

146 0.06 0.06

147 0.60 0.60

148 0.00 0.00

149 2.36 1.95

150 2.24 2.00

151 1.42 1.46

152 1.80 1.80

153 0.60 0.37

154 1.48 1.48

155 3.27 3.27

156 1.66 1.66

157 1.23 1.70

158 0.00 0.00

159 0.07 0.00

160 0.05 0.00

STOP PLAY

MODE

PIN NO.

IC505

(EEPROM)

161 0.00 0.00

162 1.24 1.43

163 0.00 0.00

164 1.38 1.45

165 1.55 1.59

166 1.43 1.43

167 3.27 3.27

168 3.27 3.27

169 0.77 0.77

170 0.00 0.00

171 2.75 2.90

172 2.75 2.90

173 1.80 1.80

174 3.27 3.27

175 0.00 0.00

176 2.90 2.90

177 3.27 3.27

178 0.00 0.00

179 2.89 2.89

180 0.00 0.00

181 0.00 0.00

182 3.28 3.28

183 0.00 0.00

184 0.00 0.00

185 0.00 0.00

186 0.00 0.00

187 0.00 0.00

188 0.00 0.00

189 3.27 3.27

190 1.23 1.23

191 1.23 1.23

192 2.30 2.30

193 0.00 0.00

194 0.48 0.48

195 3.28 3.28

196 0.69 0.69

197 0.00 0.00

198 2.90 2.90

199 3.27 3.27

200 0.50 0.50

201 0.00 0.00

202 0.70 0.71

203 0.62 0.69

204 3.28 3.28

205 2.90 2.90

206 3.90 4.20

207 2.90 2.90

208 1.48 1.48

209 1.30 1.30

210 1.64 1.64

211 1.58 1.58

212 3.28 3.28

213 1.63 1.63

214 1.63 1.63

215 1.63 1.63

STOP PLAY

MODE

PIN NO.

IC506

(67MB DRAM)

216 0.00 0.00

217 0.00 1.21

218 0.00 1.15

219 0.00 1.20

220 0.00 0.07

221 1.82 1.82

222 0.00 1.20

223 0.00 0.00

224 0.00 0.00

225 1.64 1.64

226 0.00 0.00

227 1.82 1.82

228 0.67 0.67

229 0.83 0.84

230 1.40 1.40

231 1.41 1.41

232 0.00 0.00

233 0.03 0.00

234 3.24 3.24

235 1.81 1.81

236 1.52 1.66

237 1.76 1.66

238 1.56 1.56

239 3.24 3.24

240 1.36 1.36

241 0.00 0.00

242 1.68 1.68

243 1.11 1.11

244 3.24 3.24

245 1.59 1.59

246 1.37 1.37

247 1.51 1.51

248 1.90 1.90

249 0.00 0.00

250 1.39 1.39

251 1.46 1.46

252 1.52 1.52

253 1.47 1.47

254 1.26 1.26

255 0.90 0.90

256 3.24 3.24

1 0.00 0.00

2 0.00 0.00

3 0.00 0.00

4 0.00 0.00

5 3.27 3.27

6 3.27 3.27

7 0.00 0.00

8 3.27 3.27

1 3.26 3.26

2 1.08 1.48

3 3.27 3.27

4 1.01 1.61

3-117 3-118

STOP PLAY

MODE

PIN NO.

IC507

(SW, MN1623)

IC5A1

(16MB FLASH)

IC710

(AMP, STA508)

5 1.02 1.60

6 0.00 0.00

7 1.33 1.40

8 0.91 1.02

9 3.26 3.26

10 0.98 0.80

11 0.69 0.73

12 0.00 0.00

13 0.82 0.80

14 3.26 3.26

15 2.39 2.38

16 3.19 3.22

17 2.93 2.95

18 3.12 3.17

19 2.78 2.90

20 1.37 2.87

21 1.64 0.96

22 0.07 0.06

23 0.39 0.61

24 2.35 2.04

25 2.35 2.05

26 1.44 1.46

27 3.27 3.26

28 0.00 0.00

29 0.99 1.40

30 1.46 0.60

31 1.63 1.47

32 1.13 1.42

33 0.02 0.00

34 0.03 0.00

35 0.00 0.00

36 0.07 0.00

37 0.67 0.00

38 1.06 1.68

39 2.73 1.91

40 0.10 0.00

41 0.00 0.00

42 1.40 1.09

43 3.26 3.26

44 1.48 0.94

45 1.44 0.80

46 0.00 0.00

47 1.51 1.34

48 1.50 1.07

49 3.27 3.26

50 1.71 1.10

51 2.27 1.26

52 0.00 0.00

53 0.11 1.05

54 0.00 0.00

1 5.18 5.18

2 2.46 2.46

3 5.19 5.19

4 1.31 1.31

STOP PLAY

MODE

PIN NO.

5 0.00 0.00

6 1.55 1.55

7 0.00 0.00

8 2.51 2.51

9 0.00 0.00

10 1.55 1.55

11 0.00 0.00

12 2.46 2.46

13 5.19 5.19

14 2.46 2.46

15 0.00 0.00

16 2.52 2.52

17 0.00 0.00

18 2.52 2.52

19 0.00 0.00

20 2.09 2.09

21 2.06 2.06

22 0.00 0.00

23 2.00 2.00

24 0.00 0.00

25 0.00 0.00

26 2.47 2.47

27 0.00 0.00

28 5.19 5.19

1 1.31 0.27

2 1.44 0.7

3 1.25 0.7

4 2.62 3

5 0.46 1.2

6 2.1 1.9

7 1.74 1.82

8 1.96 2.52

900

10 0 0

11 3.27 3.26

12 5.17 5.17

13 3.27 3.27

14 3.27 3.27

15 2.63 2.63

16 0 0

17 1.05 0

18 1.4 1.63

19 2.05 2.25

20 2.04 1.73

21 0.81 1.54

22 0.8 1.75

23 2.36 1.9

24 2.21 2.12

25 1.98 2.09

26 0 0

27 0 0

28 0 0

29 1.45 1.74

30 1.64 1.14

STOP PLAY

MODE

PIN NO.

31 0.47 1.48

32 0.85 1.24

33 0.26 0.88

34 1.06 1.08

35 0.7 0.97

36 1.27 1.00

37 3.27 3.26

38 1.49 1.3

39 1.12 1.1

40 1.64 1.72

41 1.18 1.1

42 1.4 1.3

43 1.04 1.17

44 1.42 1.33

45 2.04 1.88

46 0 0

47 0 0

48

1 0.00 0.00

2 15.60 15.60

3 15.60 15.60

4 31.59 31.59

5 0.00 0.00

6 0.00 0.00

7 31.59 31.59

8 15.62 15.62

9 15.62 15.62

10 15.62 15.62

11 15.62 15.62

12 31.59 31.59

13 0.00 0.00

14 0.00 0.00

15 31.59 31.59

16 15.61 15.61

17 15.61 15.61

18 NC NC

19 0.00 0.00

20 0.02 0.02

21 5.02 5.02

22 5.02 5.02

23 3.24 3.24

24 0.00 0.00

25 3.15 3.15

26 3.15 3.15

27 3.15 3.15

28 3.24 3.24

29 1.58 1.58

30 1.58 1.58

31 1.58 1.58

32 1.58 1.58

33 26.30 26.30

34 26.30 26.30

35 31.58 31.58

36 31.58 31.58

IC750

(AMP, STA508)

IC730

(AMP, STA508)

STOP PLAY

MODE

PIN NO.

1 0.00 0.00

2 15.60 15.60

3 15.60 15.60

4 31.59 31.59

5 0.00 0.00

6 0.00 0.00

7 31.59 31.59

8 15.62 15.62

9 15.62 15.62

10 15.62 15.62

11 15.62 15.62

12 31.59 31.59

13 0.00 0.00

14 0.00 0.00

15 31.59 31.59

16 15.61 15.61

17 15.61 15.61

18 NC NC

19 0.00 0.00

20 0.02 0.02

21 5.02 5.02

22 5.02 5.02

23 3.24 3.24

24 0.00 0.00

25 3.15 3.15

26 3.15 3.15

27 3.15 3.15

28 3.24 3.24

29 1.58 1.58

30 1.58 1.58

31 1.58 1.58

32 1.58 1.58

33 26.30 26.30

34 26.30 26.30

35 31.58 31.58

36 31.58 31.58

1 0.00 0.00

2 15.60 15.60

3 15.60 15.60

4 31.59 31.59

5 0.00 0.00

6 0.00 0.00

7 31.59 31.59

8 15.62 15.62

9 15.62 15.62

10 15.62 15.62

11 15.62 15.62

12 31.59 31.59

13 0.00 0.00

14 0.00 0.00

15 31.59 31.59

16 15.61 15.61

17 15.61 15.61

STOP PLAY

MODE

PIN NO.

IC770

(AMP, STA508)

STOP PLAY

MODE

PIN NO.

36 31.58 31.58

1 0.00 0.00

2 1.80 1.80

3 3.30 3.30

IC6V1

(REGULATOR, LD1117A)

18 NC NC

19 0.00 0.00

20 0.02 0.02

21 5.02 5.02

22 5.02 5.02

23 3.24 3.24

24 0.00 0.00

25 3.15 3.15

26 3.15 3.15

27 3.15 3.15

28 3.24 3.24

29 1.58 1.58

30 1.58 1.58

31 1.58 1.58

32 1.58 1.58

33 26.30 26.30

34 26.30 26.30

35 31.58 31.58

36 31.58 31.58

1 0.00 0.00

2 15.60 15.60

3 15.60 15.60

4 31.59 31.59

5 0.00 0.00

6 0.00 0.00

7 31.59 31.59

8 15.62 15.62

9 15.62 15.62

10 15.62 15.62

11 15.62 15.62

12 31.59 31.59

13 0.00 0.00

14 0.00 0.00

15 31.59 31.59

16 15.61 15.61

17 15.61 15.61

18 NC NC

19 0.00 0.00

20 0.02 0.02

21 5.02 5.02

22 5.02 5.02

23 3.24 3.24

24 0.00 0.00

25 3.15 3.15

26 3.15 3.15

27 3.15 3.15

28 3.24 3.24

29 1.58 1.58

30 1.58 1.58

31 1.58 1.58

32 1.58 1.58

33 26.30 26.30

34 26.30 26.30

35 31.58 31.58