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SERVICE MANUAL MODELS : HT502PH/HT552PH SH52PH-C,SH52PH-F,SH52PH-S,SH52PH-W
DVD RECEIVER SERVICE MANUAL
MODELS : HT502PH/HT552PH SH52PH-C,SH52PH-F, SH52PH-S,SH52PH-W
P/NO : AFN33723308
MARCH, 2007
[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
1-1
SECTION 1. GENERAL
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.
Storage in conductive bag
Drop impact
2. Repair notes
1) The pick-up incorporates a strong magnet, and 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.
NEVER look directly at the laser beam, and don't allow contact with fingers or other exposed skin.
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 lens.
Pressure Magnet
Pressure
How to hold the pick-up Cotton swab
Conductive Sheet
6) Never attempt to disassemble the pick-up. Spring has 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.
1-2
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 or 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 ) 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. Armband
Resistor (1 Mohm) Resistor (1 Mohm) Conductive Sheet
1-3
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.
1-4
SERVICE INFORMATION FOR EEPROM(DVD PART)
POWER ON
DVD LOGO Status (NO Disk status)
DETECT NEW EEPROM (OPTION EDIT SCREEN) NAME HEX LGEMK 48 55 23 FF 22 05 FC 31 0B 00 00 00 00 00 00 00 HEX LGEBN 4E 4C 30 F7 2E 05 F8 31 0B 00 00 00 00 00 00 00
Remote control Pause key-->1-->4-->7-->2 in order.
Press number 0~9, Press character A~F (1~6 for a while)
Use arrow key ( ) to move to appropriate position and make changes
Press pause key once
OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 OPT 7 OPT 8 OPT 9 OPT A OPT B OPT C OPT D OPT E OPT F OPT G
Change will be applied when power OFF-->ON.
1-5
SERVICE INFORMATION FOR EEPROM (AMP PART)
POWER ON
FLD no disc status
*Refer to page 6-1.
Remote control `2' + Front `STOP' push same timing during 5s
DETECT NEW EEPROM (OPTION EDIT SCREEN) NAME HEX HT502PH 86 EA 25 00 00 HEX HT552PH 86 FA 25 00 00
FLD `OP-0....
Use arrow key ( ) move to appropriate position and make changes
00 01 02 03 04
Press ENTER key once
FLD `write ok' or `up ok'
Remote control `2' + Front `STOP' push same timing
FLD display E2P CLR or EP CLR
Auto power off
1-6
SPECIFICATIONS
GENERAL Power supply Power consumption Net Weight External dimensions (W x H x D) Operating conditions Operating humidity Laser CD/DVD Signal system Frequency response (audio) Signal-to-noise ratio (audio) Dynamic range (audio) Harmonic distortion (audio) VIDEO Video input Video output COMPONENT VIDEO OUT TUNER FM Tuning Range Intermediate Frequency Signal-to Noise Ratio Frequency Response AM [MW] Tuning Range Intermediate Frequency AMPLIFIER Stereo mode Surround mode
(* Depending on the sound mode settings and the source, there may be no sound output.)
Refer to main label. Refer to main label. 3.6 kg 430 x 70 x 311 mm Temperature: 5°C to 35°C, Operation status: Horizontal 5% to 85% Semiconductor laser, wavelength 650 nm PAL 625/50, NTSC 525/60 200 Hz to 18 kHz More than 75 dB (1 kHz, NOP -6 dB, 20 kHz LPF/A-Filter) More than 70 dB 0.5 % (1 kHz, at 1W position) (20 kHz LPF) 1.0 V (p-p), 75 , negative sync., RCA jack x 1 1.0 V (p-p), 75 , negative sync., RCA jack x 1/ SCART (TO TV) (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
87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHz 10.7 MHz 60 dB (Mono) 140 - 8,000 Hz 522 - 1,620 kHz or 520 - 1,720 kHz 450 kHz
Inputs Outputs SPEAKERS
70 W + 70 W (4 at 1 kHz, THD 10 %) Front: 70 W + 70 W (THD 10 %) Center*: 70 W Surround*: 70 W + 70 W (4 at 1 kHz, THD 10 %) Subwoofer*: 150 W (3 at 30 Hz, THD 10 %) AUDIO IN, OPTICAL IN MONITOR OUT, EURO AV (TO TV) OUT COMPONENT VIDEO OUT
Type Impedance Frequency Response Sound Pressure Level Rated Input Power Max. Input Power Net Dimensions (W x H x D) Net Weight
Front Speaker (SH52PH-F) 2 Way 3 Speaker 4 100 - 20000 Hz 82 dB/W (1m) 70 W 140 W 260 x 1100 x 260 mm 3.0 kg
Center speaker (SH52PH-C) 2 Way 3 Speaker 4 150 - 20000 Hz 82 dB/W (1m) 70 W 140 W 330 x 86 x 121 mm 1.15 kg 1-7
Rear Speaker (SH52PH-S) 1 Way 1 Speaker 4 130 - 20000 Hz 82 dB/W (1m) 70 W 140 W 114 x 208.5 x 83 mm 0.55 kg
Passive Subwoofer (SH52PH-W) 1 Way 1 Speaker 3 40 - 1500 Hz 80 dB/W (1m) 150 W 300 W 212 x 395 x 341 mm 6.0 kg
SECTION 2. AUDIO PART
AUDIO TROUBLESHOOTING GUIDE
1. POWER SUPPLY CIRCUIT
Insert power cord
YES NO
Is the Digitron on correctly?
YES
Check power plug and power supply circuit.
Turn power on.
YES NO
Is power on?
YES NO
Check power supply circuit.
Does initial read work?
YES
Check laser circuit.
Check focus circuit.
Check disc.
NO
Does it play?
YES NO
Check tracking servo circuit.
Does it output audio?
YES
Check audio circuit.
OK
2-1
2. FRONT CIRCUIT (1/2)
Power on.
YES NO NO
Red LED turn off?
YES NO
Check if P301 is ok?
YES NO
Reconnect it. (Refer to notice *1) Refer to SMPS part.
Is the Digitron on correctly?
YES NO
Check if the front power is ok?(*2)
YES
Check if all buttons are ok?
YES
1
Check if the remote control is ok?
YES
NO
2
Front B/D ok.
NO
Check if DIS301 is ok?
Check pattern and resoldering
*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
2-2
3. FRONT CIRCUIT (2/2)
1
YES NO
Check if the power part of the front is ok?
YES NO
Refer to power(SMPS).
Check if R345~R350, R150 ok?
YES
Replack R345 ~ R350, R150.
Refer to MICOM circuit.
2
YES NO
Check if the power part of the front is ok?
YES NO
Refer to power(SMPS).
Check if the remote control waveform of PN301 pin11 is ok?
YES
Refer to MICOM circuit.
NO
Check if RC2 voltage is ok(5V)?
YES
Check RM circuit
Resolder or replace RC2.
2-3
WIRING DIAGRAM
CABLE4 EAD35201302 HDMI JACK SCART JACK AV JACK 6630XE01224 6630XE00120 6630XE00124 6630XE00120 SPEAKER TERMINAL FAN DC ACK
PN203
PN602
TUNER
COMPONENT S/W
OPTICAL IN
AMP PCB
561-715N CN602
PN601
PN202
MAIN PCB
561-711O PN206 6630XE00123 P4401
HEAT SINK
6630XE00118 PN103
CABLE3 EAD35201502
23PIN EAD35214501 CN902
14PIN EAD35214501
15PIN EAD35219501
SMPS PCB
EAD35219501
MD
PN204 6630XE00111 P4402 9PIN 6630XE00109
CABLE2 EAD35632101
11PIN CABLE1 EAD35201101
PN202 EAD35219301 KEY PCB CN301
6630R-FB05K STEREO
CN901
561-711C PN302
MIC1
MIC2
USB
VFD FRONT PCB
VOLUME
PN301 6630R-FB05R
3PIN
2-4
2-5
561-661B
PN603
BLOCK DIAGRAM
FL
IC508
TAS5152
FR WF C
IC601
TAS5152
TAS5152 RL TAS5152 RR
PORTA BLE
IC203 NJM4580 OPAMP
IC204 AK5358 ADC
DVD_DI DVD_CLK DVD_CE DVD_DO
IC501
IP9009A
2-6
2-7
CIRCUIT DIAGRAMS
1. SMPS(POWER) CIRCUIT DIAGRAM
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 NOTE : 1. Shaded( ) parts are critical for safety. Replace only FOR EASY IDENTIFICATION. THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFwith specified part number. 2. Voltages are DC-measured with a digital voltmeter FER FROM THE ACTUAL CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED.
12
11
10
9
8
7
6
5
4
3
2
NOTES) NOTES) NOTE) NOTE) NOTE) NOTE)
Symbol denotes AC ground. Symbol denotes DC chassis ground. Warning Parts that are shaded are critical With respect to risk of fire or electricial shock.
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-8
2-9
2. POWER INTERFACE CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-10
2-11
3. µ-COM(MAIN) CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-12
2-13
4. SERVO CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-14
2-15
5. I/O CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-16
2-17
6. MIC & USB & PTB CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-18
2-19
7. POWER KEY CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-20
2-21
8. TIMER CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-22
2-23
9. HDMI CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
2-24
2-25
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C. BOARD DIAGRAM ( TOP VIEW )
2-26
2-27
2. MAIN P.C. BOARD DIAGRAM ( BOTTOM VIEW )
2-28
2-29
3. SMPS P.C. BOARD
NOTES) NOTES) NOTES) NOTES)
Warning Parts that are shaded are critical with respect to risk of fire or electricial shock.
2-30
2-31
4. KEY P.C. BOARD
5. TIMER P.C. BOARD
2-32
2-33
6. USB P.C. BOARD
2-34
2-35
SECTION 3. DVD & AMP PART
ELECTRICAL TROUBLESHOOTING GUIDE
1. AMP PROTECTION
"PROTECTION" appears on the FLD.
After unplug power cord, connect again.
Power on.
"PROTECTION" appears continuously on the FLD. Yes Is the IC101 pin64 "LOW" signal(0V)? Yes
No
OK.
No
Replace IC101.
Is the Q703, Q704 and Q705 normal? Yes Replace TI AMP IC(IC701~704).
No
Replace the Q703, Q704 and Q705.
3-1
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
Tray Closed? No Tray close to closed.
SLED at Inner Side? No
Yes
SLED Moves to Inner Position
1. Judge whether have disc and disc type 2. Jump to related disc reading procedure
Recieve OPEN/ CLOSE Key? No 1. Execute Pressed Key & IR Key 2. System operation Routine Loop
1. Stop Playback & Open Tray 2. Display tray open message & LOGO
No
Receive CLOSE Key?
Yes
3-2
3. TEST & DEBUG FLOW
TEST
Check the AC Voltage Power PCBA (110V or 220V) Yes
No
Check the POWER PART
Switch on the Power PCBA
Are the DC Voltage outputs OK? (-35V, -30V, -33V, ±12V, 3.5V, 5.6V, 5V, ±12V, 5.6V, 3.3V, 5V, 7V, 32.5V) Yes
No
Check the POWER PART
Are 3.3V and 5V DC outputs normal on main PCBA? Yes
No Check the regulators or diode.
Update FLASH successfully? Yes
No
1. Check 27MHz system clock. 2. Check system reset circuit. 3. Check FLASH R/W enable signal PRD, RWR. 4. Check FLASH Memory related circuit.
Replace FLASH A
3-3
A
ES8381
Check connection lines between SDRAM(IC502) & ES8381 and the SDRAM is damaged.
ES8381 VIDEO outputs properly?
Check the related circuit of ES8381 IC501 Pins133, 134, 137, 138, 139, 140
Normal OPEN_SW, CLOSE_SW signal?
Check the Tray control IO pins on ES8381.
Check the Tray control SERVO circuit IC401.
3-4
B
Motor Driver DRV_MUTE pin is High?
Check the connection line of DRV_MUTE
Motor Driver DRV_MUTE pin is High?
Check the related circuit of SLEGN
SLED+ and SLED- output properly?
Check Focus connection on ES8381 and motor driver.
3-5
C
Check the laser power circuit on ES8381 and connecting to power transistor.(Q405, Q406)
Collector voltage of power transistor is OK? (Q405, Q406)
Check cable connection between transitor output and pick-up head.
Proper RF signal on ES8381
Check the related circuit on ES8381 RF signal.
Check the RF connection between IP9009 and ES8381.
Proper SPINDLE signal on ES8381
ES8381.
SPNP SPNN output properly?
3-6
D
Proper signals on A, B, C, D of ES8381
Check connections between ES8381 and pick-up head.
Proper CD-DVDCT signal on ES8381
Check the related circuit on ES8381 CD-DVDCT
Check CD_DVDCT connection between IP9009 and ES8381
Proper CD-DVDCT signal on ES8381
Check the related circuit on ES8381.
Proper TRACK signal on ES8381
Check the TRACK connection on ES8381 and motor driver.
TR+ & TRoutput properly?
Disc Playback?
3-7
E
PWM IC received correct data stream?
Check connection between IC601 BCK, LRCK, ADATAO
Normal PWM IC out?(IC601)
Check the related circuit of PWM.(Check Audio out Pins54, 55, 58, 59, 61, 62, 67, 68, 70, 71, 74, 75
Check Digital Amp circuit (IC701, IC702, IC703, IC704)
3-8
4. AUDIO µ-COM CIRCUIT(DVD & AMP)
POWER ON
Does CD/DVD appear at FLD? YES Does Loading appear at FLD? YES Does no Disc or Time appear at FLD? YES Check if DVD an Audio MICOM Insert is OK. YES
NO
Does AV1, TV Audio, AV1 opt. YES and FM 87.5 appear at FLD NO
OK
NO
Does it appear DVD Error at FLD? YES
NO
NO
Check power part of Main B/D. YES
NO Refer to SMPS.
NO Check oscillator of X101. YES NO Check if IC101 Pin41 is high. YES NO Check IC101 Reset Waveform. Refer to oscillator Circuit.
Check Power. YES
Check DVD Module.
Check SMPS.
Check if IC101 Pin15, 16, NO 47 are high(5V). YES Check if IC101 Pin1 is high. YES NO
Check 3.3V line.
Check Power section Circuit.
Replace IC101.
3-9
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL 1) ES8381 main clock is at 27MHz(X501)
3.8V, 27MHz
FIG 1-1
2) ES8381 reset is high active.
Power Cord in
5.2VA
PWR_CTL(SYSTEM µ-COM) (IC101 PIN2) DVD_RESET(IC101 PIN 41)
MRST#(IC501 PIN 251)
FIG 1-2
3-10
3) Flash R/W enable signal during download(Downloading)
FRD(IC503 PIN 28)
FWR(IC503 PIN 11)
FIG 1-4
2. SDRAM CLOCK 1) ES8381 main clock is at 27MHz(X501)
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V
(IC502 PIN 38)
FIG 2-1
3-11
3. TRAY OPEN/CLOSE SIGNAL 1) Tray open/close waveform
OPENSW(P4402 PIN3)
CLOSESW(P4402 PIN4) OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-1
2) Tray close waveform
OPENSW(P4402 PIN3) CLOSESW(P4402 PIN4)
OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-2
3-12
3) Tray open waveform
OPENSW(P4402 PIN3)
CLOSESW(P4402 PIN4) OPEN(IC401 PIN 1)
CLOSE(IC401 PIN 2)
FIG 3-3
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
3-13
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FOO(1.5V/1.4V/1.3V) (IC501 PIN 208)
F+(4.0V/3.6V/3.2V) (IC401 PIN 13)
F-(4.0V/3.6V/3.2V) (IC401 PIN 14)
FIG 5-1
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
DVD MDI(0V/180mV) (IC501 PIN 188) DVDLDO501(5.0V//3.5V) (IC501 PIN 185)
CDLDO(5.0V/3.6V) (IC501 PIN 186)
FIG 6-1
3-14
7. DISC TYPE JUDGEMENT WAVEFORMS
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 169)
RF(IC501 PIN 196)
FIG 7-1 (DVD)
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 169)
RF(IC501 PIN 196)
FIG 7-2 (DVD)
3-15
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 169)
RF(IC501 PIN 196)
FIG 7-3 (CD)
F+(IC401 PIN 13)
CD_DVDCT(IC501 PIN 169)
RF(IC501 PIN 196)
FIG 7-4 (CD)
3-16
8. FOCUS ON WAVEFORMS
CD_DVDCT(IC501 PIN 169)
FOO(IC501 PIN208) F+(IC401 PIN 13)
F-(IC401 PIN 14)
FIG 8-1 (DVD)
CD_DVDCT(IC501 PIN 169)
FOO(IC501 PIN208) F+(IC401 PIN 13)
F-(IC401 PIN 14)
FIG 8-2 (CD)
3-17
9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)
SPINO(1.4V/1.8V) (IC501 PIN 207) SP-(3.6V/2.4V) (IC501 PIN 192)
SP+(3.6V/4.8V) (IC501 PIN 191)
FIG 9-1
10. TRACKING CONTROL RELATED SIGNAL(System checking)
CD_DVDCT(IC501 PIN 169)
TRO(IC501 PIN 210)
TR-(IC401 PIN 12)
TR+(IC401 PIN 11)
FIG 10-1(DVD)
3-18
CD_DVDCT(IC501 PIN 169)
TRO(IC501 PIN 210)
TR-(IC401 PIN 12)
TR+(IC401 PIN 11)
FIG 10-2(CD)
11. ES8381 VIDEO OUTPUT WAVEFORMS 1) Full colorbar signal(COMPOSIT)
(IC501 PIN 134)
FIG 11-1
3-19
2) Y
(IC501 PIN 140)
FIG 11-2
12. AUDIO OUTPUT FROM PWM IC 1) Audio L/R
(IC602 PIN 1, 7)
FIG 12-1
3-20
2) Audio related Signal
ASDATA3
ADATA0(IC501 PIN 154)
BCK(IC501 PIN 155)
LRCK(IC501 PIN 156)
FIG 12-2
3-21
13. DVD & AMP WAVEFORMS 1) 2)
· R620 TP611 or R621 TP612
· R618 TP609 or R619 TP610
3)
4)
· R612 TP603 or R613 TP604
· R610 TP601 or R611 TP602
5)
6)
· R614 TP605 or R615 TP606
· R616 TP607 or R617 TP608
3-22
DVD & AMP CIRCUIT DIAGRAMS
1. MPEG CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
3-22
3-23
2. DSP CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
3-24
3-25
3. AMP CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
3-26
3-27
PRINTED CIRCUIT BOARD DIAGRAMS
1. AMP P.C. BOARD DIAGRAM_TOP VIEW
3-28
3-29
2. AMP P.C. BOARD DIAGRAM_BOTTOM VIEW
3-30
3-31
SECTION 4. EXPLODED VIEWS
· CABINET AND MAIN FRAME SECTION
NOTES) THE EXCLAMATION POINT WITHIN AN
462 463
F
EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.
OPTIONAL PART
A26 A43 283
465 A50 CN301
G
463
463
250
E
CABLE3 A46 471 MAIN
D
CABLE4 463
462
CABLE1 CABLE2 280
D C F G
CN902
463 AMP
E B
463
279
OPTIONAL
A41
B C
276 469 A44
465
CN901 SMPS 463
A
A45
265 260
A
A47 465
261
300
320
261
261
4-1
4-2
· DECK MECHANISM EXPLODED VIEW(DP-10A)
A26 439 018
001 002 003
A01
014 013
A02
020 017
012
435
015B
015
015A
019 016 440 432 012 030 010
012A
026
439 024 025 036 431 435
012A
A03
021
430
4-3
4-4
· PACKING ACCESSORY SECTION
OPTIONAL PART
835 SPK CABLE ASS'Y
811
PLUG ASS'Y 1WAY(YELLOW)
824 ANTENNA LOOP(AM)
808 BATTERY
825 ANTENNA (FM)
900 REMOCON
801 INSTRUCTION ASSEMBLY
803 PACKING, CASING
804 BAG 803 PACKING, CASING
802 BOX
4-5
SECTION 5. SPEAKER PART
1. SH52PH
· CENTER SPEAKER(SH52PH-C)
A70
754
757A
A70B A70A
757B 751 752 753 755 756 753 753
753
750
751
WIRE70
5-1
· FRONT SPEAKER(SH52PH-F)
A80
853
A80B
A80A
854
856 850
A80C
851 862
852 853
858 859 857
852 853
855 853
860
861
855B 855A
WIRE80 : F.R WIRE81 : F.L
5-2
5-3
4. LHS-96IA
· REAR SPEAKER(SH52PH-S)
653 A60 A60B
A60A
652
655
651
654 650
656
WIRE60 : R.R WIRE61 : R.L
5-4
2. LHS-76IB
· PASSIVE SUBWOOFER(SH52PH-W)
A90 953 952
A90B
A90A
956 950
955 954
957 951 958 952 959 952 959
958
WIRE90
5-5