SERVICE MANUAL
http://biz.lgservice.com
MODEL : HT552TH SH52TH-C, SH52TH-S, SH52TH-W
DVD/CD RECEIVER
SERVICE MANUAL
P/NO : AFN31640733 DECEMBER, 2006
MODEL : HT552TH
SH52TH-C, SH52TH-S,
SH52TH-W
1-1
[CONTENTS]
SECTION 1. GENERAL
• SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
• ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
• SERVICE INFORMATION FOR EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
• SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
SECTION 2. AUDIO PART
• AUDIO TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
• WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
• BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
• CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
SECTION 3. DVD & AMP PART
• ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
• DVD & AMP CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22
• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
SECTION 4. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
SECTION 5. SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
SECTION 6. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
1-2
SERVICING PRECAUTIONS
NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort this.
6) Never attempt to disassemble the pick-up.
Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
Storage in conductive bag
Drop impact
NEVER look directly at the laser beam, and don’t let
contact fingers or other exposed skin.
Magnet
How to hold the pick-up
Conductive Sheet
Cotton swab
Pressure
Pressure
SECTION 1. GENERAL
1-3
NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components
can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must be
taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1M Ω)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent
static electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Resistor
(1 Mohm)
Conductive
Sheet
Resistor
(1 Mohm)
Armband
1-4
ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface
such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER
SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion
such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS
INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.
SERVICE INFORMATION FOR EEPROM(DVD PART)
POWER ON
*Refer to page 6-1.
DETECT NEW EEPROM
DVD LOGO Status (NO Disk status)
Remotecontrol
Pause key-->1-->4-->7-->2 in order.
Press number 0~9, Press charater
A~F (1~6 for a while)
Use arrow key ( ) to
move to approprite position and
make changes
Press pause key once
(OPTION EDIT SCREEN)
NAME HEX
OPT 1 00
OPT 2 00
OPT 3 00
OPT 4 00
OPT 5 00
OPT 6 00
OPT 7 00
OPT 8 00
OPT 9 00
OPT A 00
OPT B 00
OPT C 00
OPT D 00
OPT E 00
OPT F 00
OPT G 00
Change will be applied when power
OFF-->ON.
1-5
SERVICE INFORMATION FOR EEPROM (AMP PART)
POWER ON
FLD no disc status
Remotecontrol ‘2’ + Front ‘STOP’
push same timing during 5s
DETECT NEW EEPROM
(OPTION EDIT SCREEN)
FLD ‘00….
Use arrow key ( ) move
to appropriate position and make
changes
Press ENTER key once
FLD ‘write ok’ or ‘up ok’
Remotecontrol ‘2’ + Front ‘STOP’
push same timing
NAME HEX
00 86
01 FA
02 23
03 00
04 00
FLD display E2P CLR or EP CLR
Auto power off
1-6
1-7
SPECIFICATIONS
GENERAL
Power supply Refer to main label.
Power consumption Refer to main label.
Net Weight 3.6 kg
External dimensions (W x H x D) 430 x 70 x 311 mm
Operating conditions Temperature: 5°C to 35°C, Operation status: Horizontal
Operating humidity 5% to 85%
Laser Semiconductor laser, wavelength 650 nm
CD/DVD
Signal system PAL 625/50, NTSC 525/60
Frequency response (audio) 200 Hz to 18 kHz
Signal-to-noise ratio (audio) More than 75 dB (1 kHz, NOP -6 dB, 20 kHz LPF/A-Filter)
Dynamic range (audio) More than 70 dB
Harmonic distortion (audio) 0.5 % (1 kHz, at 1W position) (20 kHz LPF)
VIDEO
Video input 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1
Video output 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1/ SCART (TO TV)
COMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 ohms, negative sync, RCA jack x 1
(PB)/(PR) 0.7 V (p-p), 75 ohms, RCA jack x 1
TUNER
FM
Tuning Range 87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHz
Intermediate Frequency 10.7 MHz
Signal-to Noise Ratio 60 dB (Mono)
Frequency Response 140 - 8,000 Hz
AM [MW]
Tuning Range 522 - 1,620 kHz or 520 - 1,720 kHz
Intermediate Frequency 450 kHz
AMPLIFIER
Stereo mode 70 W + 70 W (4Ω at 1 kHz, THD 10 %)
Surround mode Front: 70 W + 70 W (THD 10 %)
Center*: 70 W
Surround*: 70 W + 70 W (4Ω at 1 kHz, THD 10 %)
Subwoofer*: 150 W (3Ω at 30 Hz, THD 10 %)
Inputs AUDIO IN, OPTICAL IN
Outputs MONITOR OUT, EURO AV (TO TV) OUT
COMPONENT VIDEO OUT
SPEAKERS
Front/Rear Speaker Center speaker Passive Subwoofer
(SH52TH-S) (SH52TH-C) (SH52TH-W)
Type 2 Way 3 Speaker 2 Way 3 Speaker 1 Way 1 Speaker
Impedance 4 Ω 4 Ω 3 Ω
Frequency Response 100 - 20000 Hz 150 - 20000 Hz 40 - 1500 Hz
Sound Pressure Level 82 dB/W (1m) 82 dB/W (1m) 80 dB/W (1m)
Rated Input Power 70 W 70 W 150 W
Max. Input Power 140 W 140 W 300 W
Net Dimensions (W x H x D) 260 x 1100 x 260 mm 330 x 86 x 121 mm 212 x 395 x 341 mm
Net Weight 3.0 kg 1.15 kg 6.0 kg
(* Depending on the sound mode
settings and the source, there may
be no sound output.)
2-1
SECTION 2. AUDIO PART
AUDIO TROUBLESHOOTING GUIDE
1. POWER SUPPLY CIRCUIT
Insert power cord
YES
YES
YES
YES
YES
YES
YES
Turn power on.
NO
Check power plug and power supply circuit.
NO
Check power supply circuit.
NO
Check laser circuit.
Check focus circuit.
Check disc.
NO
NO
Check tracking servo circuit.
Check audio circuit.
Does red power led turn on?
Is power on?
Does initial read work?
Does it play?
Does it output audio?
OK
2-2
2. FRONT CIRCUIT (1/2)
YES
YES YES
YES
YES
YES
YES
NO NO
Reconnect it.
(Refer to notice *1)
Tuner off the red led? Check if the PN301 is ok?
NO
NO
NO
Refer to smps part.
Check pattern and
resoldering
Is digitron on normally?
Check if all buttons
are ok?
Check if the front
power is ok?(*2)
Check if the DIS301
is ok?
NO
1
Check if the
remotecontrol is ok?
NO
2
Power on.
Front b/d ok.
*1 : When it is needed to reconnected FFC cable into PN301
Short 1pin of PN103 with 18pin of CN901 in amp part
*2 : PN603 Pins.
PIN1 : -35 VKK
PIN2 : -30 FL+
PIN3 : -33 FLPIN7 : +5V
PIN13 : +5VA
2-3
3. FRONT CIRCUIT (2/2)
YES
YES
YES
NO
Reffer to power(SMPS).
NO
Replack R345 ~ R350, R154.
Check if the power part of the front is ok?
Check if R345~R350, R150 ok?
Refer to micom circuit.
1
YES
YES
YES
NO
Reffer to power(SMPS).
NO
Reffer to micom circuit.
NO
Check rm circuit
Check if the power part of the front is ok?
Check if the remotecontrol waveform of the
PN301 pin11 is ok?
Check if the RC2 voltage is ok(5V)?
YES
Resoldering or replace RC2.
2
2-4 2-5
WIRING DIAGRAM
CABLE4 EAD35201302
HDMI
JACK
SCART JACK AV JACK
COMPONENT S/W
MAIN PCB
561-711O
PN206
6630XE00123
P4401
23PIN
PN203
6630XE00120
PN202
6630XE01224
CABLE3 EAD35201502
15PIN
EAD35219501
PN602
6630XE001206630XE00124
PN601
OPTICAL IN
TUNER
6630XE00118
PN103
CN902CN901
EAD35214501
CN602
561-715N
14PIN
EAD35214501
SPEAKER TERMINAL
AMP PCB
SMPS PCB
HEAT SINK
FAN
DC
ACK
PN603
561-661B
KEY PCB
CABLE2 EAD35632101
CN301
EAD35219301
MD
PN204
PN202 6630R-FB05K
11PIN
MIC1
3PIN
6630XE00111
USB
MIC2
STEREO
9PIN
P4402
CABLE1 EAD35201101
6630XE00109
EAD35219501
561-711C
PN302
PN301
6630R-FB05R
VFD
FRONT PCB
VOLUME
2-6 2-7
BLOCK DIAGRAM
IC508
IC601
DVD_DI
DVD_CLK
DVD_CE
DVD_DO
BLE
PORTA
TAS5152
TAS5152
TAS5152
TAS5152
FL
FR
WF
C
RL
RR
IC501
IC203
NJM4580
OPAMP
IC204
AK5358
ADC
IP9009A
2-8 2-9
CIRCUIT DIAGRAMS
1. SMPS(POWER) CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
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.
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT. 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.
2-10 2-11
2. POWER INTERFACE CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-12 2-13
3. µ-COM(MAIN) CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-14 2-15
4. SERVO CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-16 2-17
5. I/O CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-18 2-19
6. MIC & USB & PTB CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-20 2-21
7. POWER KEY CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-22 2-23
8. TIMER CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
2-24 2-25
9. HDMI CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C. BOARD DIAGRAM ( TOP VIEW )
2-26 2-27
2-28 2-29
2. MAIN P.C. BOARD DIAGRAM ( BOTTOM VIEW )
3. SMPS P.C. BOARD
2-30 2-31
NOTES) Warning
NOTES) Parts that are shaded are critical
NOTES) with respect to risk of fire or
NOTES) electricial shock.
2-32 2-33
4. KEY P.C. BOARD
5. TIMER P.C. BOARD
2-34 2-35
6. USB P.C. BOARD
3-1
ELECTRICAL TROUBLESHOOTING GUIDE
SECTION 3. DVD & AMP PART
1. AMP PROTECTION
"PROTECTION" appears on the FLD.
After unplug power cord, connect again.
Power on.
appears continuously on the FLD.
Is the Q703, Q704 and 705 normal?
"PROTECTION"
Yes
Is the IC101 pin64
"LOW" signal(0V)?
Yes
Yes
Replace TI AMP IC(IC701~704).
No
No
No
OK.
Replace IC101.
Replace the Q703, Q704 and Q705.
3-2
2. SYSTEM OPERATION FLOW
Power On
1. IC101 initializes SERVO, DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC
Show LOGO
Yes
SLED Moves to Inner Position
1. Judge whether have disc and disc type
2. Jump to related disc reading procedure
Tray Closed?
No
Tray Close to Closed position
SLED at Inner
Side?
No
Recieve
OPEN/ CLOSE
Key?
Yes
No
1. Execute Pressed Key & IR Key
2. Systemoperati on Routi ne Loop
1. Stop Playback & Open Tray
2. Display tray open message & LOGO
No
Receive
CLOSE Key?
Yes
3-3
3. TEST & DEBUG FLOW
TEST
Check the
AC Vol tage
Power PCBA (110V
or 220V)
Yes
Switch on the Power PCBA
Is the
DC Voltage outputs
OK? (-35V, -30V, -33V, ±12V,
3.5V, 5.6V, 5V, ±12V, 5.6V,
3.3V, 5V, 7V,
32.5V)
Yes
Are 3.3V and 5V DC
outputs normal on main
PCBA?
Yes
Update
FLASH
successfully?
No
No
No
No
Check the POWER PART
Check the POWER PART
Check the regulators or diode.
1. Check 27MHz system clock.
2. Check systemreset circuit.
3. Check FLASH R/Wenable signal PRD,
RWR.
4. Check FLASH Memory related circuit.
Yes
Replace FLASH
A
3-4
A
ES8381
Check connection lines between
SDRAM(IC502) & ES8381 and
the SDRAM is damaged.
ES8381
VIDEO outputs
properly?
Normal
OPEN_SW,
CLOSE_SW
signal?
Check the related circuit of ES8381
IC501 Pins133, 134, 137, 138, 139, 140
Check the Tray control IO pins on
ES8381.
Check the Tray control amplifyung
circuit IC401.
3-5
B
Motor
Driver DRV_MUTE
pin is High?
Motor
Driver DRV_MUTE
pin is High?
SLED+ and
SLED- output
properly?
Check the connection line of
DRV_MUTE
Check the related circuit of
SLEGN
Check Focus connection on
ES8381 and motor driver.
3-6
C
Check the laser power circuit on
ES8381 and connecting to
power transistor.(Q405, Q406)
Collector
voltage of power
transistor is OK?
(Q405, Q406)
Proper
RF signal on ES8381
Check the RF connection
between IP9009 and ES8381.
Proper
SPINDLE signal on
ES8381
SPNP
SPNN output
properly?
Check the related circuit on
ES8381 RF signal.
ES8381.
3-7
D
Proper
signals on A, B, C,
D of ES8381
Proper
CD-DVDCT signal
on ES8381
Check CD_DVDCT connection
between IP9009 and ES8381
Proper
CD-DVDCT signal
on ES8381
Proper
TRACK signal
on ES8381
Check connections between
ES8381 and pick-up head.
Check the related circuit on
ES8381 CD-DVDCT
Check the related circuit on
ES8381.
Check the TRACK connection
on ES8381 and motor driver.
TR+ & TR-
output properly?
3-8
E
PWM IC
received correct data
stream?
Normal
PWM IC out?(IC601)
Check Digital Amp circuit
(IC701, IC702, IC703, IC704)
Check connection between
IC601 BCK, LRCK, ADATAO
Check the related circuit of
PWM.(Check Audio out
Pins54, 55, 58, 59, 61, 62,
67, 68, 70, 71, 74, 75
3-9
4. AUDIO µ-COM CIRCUIT(DVD & AMP)
YES
Does CD/DVD appear
at FLD?
Does AV1, TV Audio, AV1 opt.
and FM 87.5 appear at FLD
OK
Does Loading appear
at FLD?
POWER ON
YES NO
YES
Does no Disc or Time
appear at FLD?
NO YES
NO
NO
NO
NO
NO
NO
Does it appear DVD Error
at FLD?
Refer to SMPS.
Refer to oscillator Circuit.
Check IC101 Reset
Waveform.
Check 3.3V line.
Check Power section
Circuit.
NO
Check power part of Main
B/D.
Check oscillator of X101.
Check if IC101 Pin41
is high.
Check if IC101 Pin15, 16,
47 are high(5V).
Check if IC101 Pin1
is high.
Replace IC101.
NO
NO
Check if DVD an Audio
Micom Insert is OK.
Check Power.
YES
Check DVD Module.
YES
Check SMPS.
YES YES
YES
YES
YES
YES
YES
3-10
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL
1) ES8381 main clock is at 27MHz(X501)
3.8V, 27MHz
FIG 1-1
2) ES8381 reset is high active.
PWR_CTL(SYSTEM µ-COM)
(IC101 PIN2)
5.2VA
Power Cord in
DVD_RESET(IC101 PIN 41)
MRST#(IC501 PIN 251)
FIG 1-2
3-11
2. SDRAM CLOCK
1) ES8381 main clock is at 27MHz(X501)
(IC502 PIN 38)
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V
FIG 2-1
3) Flash R/W enable signal during download(Downloading)
FRD(IC503 PIN 28)
FWR(IC503 PIN 11)
FIG 1-4
3-12
3. TRAY OPEN/CLOSE SIGNAL
1) Tray open/close waveform
OPENSW(P4402 PIN3)
CLOSESW(P4402 PIN4)
OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-1
2) Tray close waveform
OPENSW(P4402 PIN3)
CLOSESW(P4402 PIN4)
OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-2
3-13
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
SLO(2.0V/1.4V/1.0V)
(IC501 PIN 209)
DRV_MUTE(5V) – (IC401 PIN 21)
SLED+(4.7V/3.6V/1.9V)
(IC401 PIN 17)
SLED-(5.3V/3.7V/2.5V)
(IC401 PIN 18)
FIG 4-1
3) Tray open waveform
OPENSW(P4402 PIN3)
CLOSESW(P4402 PIN4)
OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-3
3-14
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FOO(1.5V/1.4V/1.3V)
(IC501 PIN 208)
F+(4.0V/3.6V/3.2V)
(IC401 PIN 13)
F-(4.0V/3.6V/3.2V)
(IC401 PIN 14)
FIG 5-1
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
DVD MDI(0V/180mV)
(IC501 PIN 188)
DVDLDO501(5.0V//3.5V)
(IC501 PIN 185)
CDLDO(5.0V/3.6V)
(IC501 PIN 186)
FIG 6-1
3-15
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 169)
RF(IC501 PIN 196)
FIG 7-2 (DVD)
7. DISC TYPE JUDGEMENT WAVEFORMS
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 169)
RF(IC501 PIN 196)
FIG 7-1 (DVD)
3-16
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 169)
RF(IC501 PIN 196)
FIG 7-3 (CD)
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 169)
RF(IC501 PIN 196)
FIG 7-4 (CD)
3-17
CD_DVDCT(IC501 PIN 169)
FOO(IC501 PIN208)
F+(IC401 PIN 13)
F-(IC401 PIN 14)
FIG 8-2 (CD)
8. FOCUS ON WAVEFORMS
CD_DVDCT(IC501 PIN 169)
FOO(IC501 PIN208)
F+(IC401 PIN 13)
F-(IC401 PIN 14)
FIG 8-1 (DVD)
3-18
9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)
SPINO(1.4V/1.8V)
(IC501 PIN 207)
SP-(3.6V/2.4V)
(IC501 PIN 192)
SP+(3.6V/4.8V)
(IC501 PIN 191)
FIG 9-1
10. TRACKING CONTROL RELATED SIGNAL(System checking)
CD_DVDCT(IC501 PIN 169)
TRO(IC501 PIN 210)
TR-(IC401 PIN 12)
TR+(IC401 PIN 11)
FIG 10-1(DVD)
3-19
CD_DVDCT(IC501 PIN 169)
TRO(IC501 PIN 210)
TR-(IC401 PIN 12)
TR+(IC401 PIN 11)
FIG 10-2(CD)
11. ES6698FD VIDEO OUTPUT WAVEFORMS
1) Full colorbar signal(COMPOSIT)
(IC501 PIN 134)
FIG 11-1
3-20
2) Y
(IC501 PIN 140)
FIG 11-2
1) Audio L/R
FIG 12-1
12. AUDIO OUTPUT FROM PWM IC
(IC602 PIN 1, 7)
3-21
BCK(IC501 PIN 155)
LRCK(IC501 PIN 156)
ASDATA3
2) Audio related Signal
ADATA0(IC501 PIN 154)
FIG 12-2
3-22
1)
• R620 → TP611
or
R621 TP612
2)
• R618 → TP609
or
R619 TP610
3)
• R612 → TP603
or
R613 TP604
4)
• R610 → TP601
or
R611 TP602
5)
• R614 → TP605
or
R615 TP606
6)
• R616 → TP607
or
R617 TP608
13. DVD & AMP WAVEFORMS
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
3-22 3-23
DVD & AMP CIRCUIT DIAGRAMS
1. MPEG CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
3-24 3-25
2. DSP CIRCUIT DIAGRAM
3. AMP CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R ST
3-26 3-27
PRINTED CIRCUIT BOARD DIAGRAMS
1. AMP P.C. BOARD DIAGRAM_TOP VIEW
3-28 3-29
3-30 3-31
2. AMP P.C. BOARD DIAGRAM_BOTTOM VIEW
• CABINET AND MAIN FRAME SECTION_HT502’s
4-1 4-2
SECTION 4. EXPLODED VIEWS
A26
463
NOTES) THE EXCLAMATION POINT WITHIN AN
462
F
EQUILATERAL TRIANGLE IS INTENDED
TO ALERT THE SERVICE PERSONNEL
TO THE PRESENCE OF IMPORTANT
SAFETY INFORMATION IN SERVICE
LITERATURE.
OPTIONAL PART
A50
280
279
A43
CN301
A44
465
CABLE1
260
283
E
OPTIONAL
276
471
CABLE2
469
A41
465
A46
D
D
CN902
C
CN901
463
G
463
250
CABLE3
462
MAIN
B
G
SMPS
CABLE4
463
C
F
463
463
AMP
E
B
463
A45
A
265
A47
A
465
261
300
320
261
261
• DECK MECHANISM EXPLODED VIEW(DP-10A)
4-3 4-4
A26
012
019
013
017
439
014
435
015
018
015B
015A
016
012
440
030
001
002
003
432
A01
A02
020
012A
010
026
A03
036
025
439
024
431
435
012A
021
430
4-9
• PACKING ACCESSORY SECTION
808
BATTERY
900
REMOCON
803
PACKING, CASING
824
ANTENNA LOOP(AM)
825
ANTENNA (FM)
INSTRUCTION ASSEMBLY
801
804
BAG
802
BOX
PACKING, CASING
803
5-1
751
751
750
WIRE70
753
753
753
753
752
A70B
755
754
756
SECTION 5. SPEAKER SECTION
A70
A70A
• CENTER SPEAKER(SH52TH-C)
757B
757A
4. LHS-96IA
A80
A80A
A80B
853
853
853
853
853
850
852
852
855
855A
855B
861
860
859
857
858
856
A80C
851
854
• FRONT/REAR SPEAKER(SH52TH-S)
WIRE80 : F.R
WIRE81 : F.L
WIREWIRE82 : R.R
WIRE83 : R.L
5-2
2. LHS-76IB
• PASSIVE SUBWOOFER SPEAKER(SH52TH-W)
5-3
A90
A90A
950
952
951
953
959
A90B
952
957
958
956
955
954
958
952
959
WIRE90
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