Toshiba SD-V55HTSC, SD-V55HTSU Circuit Diagrams

FILE NO. 810-200425
CIRCUIT DIAGRAMS
DVD/VCR
Home Theater System
SD-V55HTSU
SD-V55HTSC
DOCUMENT CREATED IN JAPAN, May, 2004
SECTION 3
ELECTRICAL
CONTENTS
OVERALL WIRING DIAGRAM .............................3-2
DVD & AMP PART
VCR PART
ELECTRICAL TROUBLESHOOTING
GUIDE ..........................................................................3-54
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. OSD CIRCUIT .........................................................3-9
5. Y/C CIRCUIT.........................................................3-10
6. TUNER/IF CIRCUIT ..............................................3-14
7. Hi-Fi CIRCUIT.......................................................3-16
BLOCK DIAGRAMS ...............................................3-18
1. POWER(SMPS) BLOCK DIAGRAM 1 .................3-18
2. POWER(SMPS) BLOCK DIAGRAM 2 .................3-20
3. Y/C BLOCK DIAGRAM ........................................3-22
4. NORMAL AUDIO BLOCK DIAGRAM ..................3-24
5. Hi-Fi BLOCK DIAGRAM ......................................3-26
6. SYSTEM BLOCK DIAGRAM ...............................3-28
CIRCUIT DIAGRAMS .............................................3-30
1. POWER(SMPS) CIRCUIT DIAGRAM 1 ...............3-30
2. POWER(SMPS) CIRCUIT DIAGRAM 2 ...............3-32
3. JACK/TUNER CIRCUIT DIAGRAM .....................3-34
4. A/V CIRCUIT DIAGRAM.......................................3-36
5. Hi-Fi CIRCUIT DIAGRAM ....................................3-38
6. SYSTEM CIRCUIT DIAGRAM..............................3-40
7. KEY CIRCUIT DIAGRAM .....................................3-42
• WAVEFORMS.........................................................3-44
• CIRCUIT VOLTAGE CHART ..................................3-46
PRINTED CIRCUIT DIAGRAMS ........................3-48
1. MAIN P.C.BOARD ................................................3-48
2. POWER P.C.BOARD ............................................3-50
3. KEY 1(LEFT) P.C.BOARD....................................3-52
4. KEY 2(RIGHT) P.C.BOARD..................................3-52
1. SYSTEM OPERATION FLOW..............................3-54
2. TEST & DEBUG FLOW........................................3-55
3. AUDIO µ-COM CIRCUIT(DVD & AMP)................3-63
DETAILS AND WAVEFORMS ON
SYSTEM TEST AND DEBUGGING ..................3-62
1. SYSTEM 27MHZ CLOCK,
RESET, FLASH R/W SIGNAL ..............................3-62
2. SDRAM CLOCK ...................................................3-64
3. TRAY OPEN/CLOSE SIGNAL..............................3-64
4. SLED CONTROL RELATED SIGNAL
(NO DISC CONDITION)........................................3-66
5. LENS CONTROL RELATED SIGNAL
(NO DISC CONDITION)........................................3-66
6. LASER POWER CONTROL RELATED
SIGNAL(NO DISC CONDITION) ..........................3-67
7. DISC TYPE JUDGEMENT WAVEFORMS ...........3-67
8. FOCUS ON WAVEFORMS ...................................3-69
9. SPINDLE CONTROL WAVEFORMS
(NO DISC CONDITION)........................................3-70
10. TRACKING CONTROL RELATED
SIGNAL(SYSTEM CHECKING) .........................3-71
11. RF WAVEFORM..................................................3-72
12. MT1379 VIDEO OUTPUT WAVEFORMS...........3-72
13. AUDIO OUTPUT FROM AUDIO DAC ................3-74
14. DVD & AMP WAVEFORMS................................3-75
BLOCK DIAGRAMS ...............................................3-76
1. OVERALL BLOCK DIAGRAM .............................3-76
2. SERVO BLOCK DIAGRAM..................................3-77
3. MPEG & MEMORY BLOCK DIAGRAM...............3-78
4. VIDEO & AUDIO BLOCK DIAGRAM...................3-79
5. DVD & AMP BLOCK DIAGRAM ..........................3-80
CIRCUIT DIAGRAMS .............................................3-81
1. MPEG CIRCUIT DIAGRAM..................................3-81
2. RF & SERVO CIRCUIT DIAGRAM ......................3-83
3. AUDIO, µ-COM
CIRCUIT DIAGRAM(DVD & AMP) .......................3-85
4. DIGITAL AMP CIRCUIT
DIAGRAM (DVD & AMP)......................................3-87
5. PWM & CODEIC
CIRCUIT DIAGRAM (DVD & AMP)......................3-89
6. INTERFACE
CIRCUIT DIAGRAM (DVD & AMP)......................3-91
• CIRCUIT VOLTAGE CHART ..................................3-93
PRINTED CIRCUIT DIAGRAMS ........................3-97
1. DVD & AMP P.C.BOARD .....................................3-97
3-1
P3D01
SP PB A
SP REC
SP PB B
EP PB B
EP REC
EP PB A
HiFi PB A
HiFi REC
HiFi PB B
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
P3D02
CTL(+)
CTL(-)
A/E(+)
A/E(-)
A.REC
A.PB
1
2
3
4
5
6
1
2
3
4
5
6
1
2
PSV01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
SMPS
BOARD
GND
GND
5.3VA
5.3VA
GND
3.8VA
3.8VA
GND
13VA
GND
33VA
GND
-29VA
FD(-)
FD(+)
DECK
1
2
3
4
5
6
7
8
9
10
11
12
PMC01
1
CFG
2
CAP Vcc
3
5.2VA
4
CAP REV’H’
5
V-limit
6
MOTOR GND
7
S.GND
8 DRUM(L/M)Vcc
9
CAP CTL
10 L/M CONTROL
11
DPG/FG
12
DRUM CTL
P3D03
GND
FULL ERASE
1
2
PVS01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
10
VCR
PSW01
32VA
32VA
32VA
32VA GND
32VA GND
32VA GND
NC
GND
NC
PWR SENSE
1
2
3
4
5
6
7
8
9
10
PVD01
PDV02
5.3VA
1
2
NC(-9V)
3
REG 8V(M)
GND(M)
4
REG 9V(+9V) 5
6
A. GND
REG 3.3V
7
5V
8
D. GND
9
10
REG 3.3V
A.GND
11
D.GND
12
1
2
3
4
5
6
7
8
9
10
11
12
MPEG/AMP
BOARD
PVD02
PDV02
DVD V.IN
1
GND
2
3
DVD A.L IN
4
GND
DVD A.R IN
5
GND
6
VCR A.L OUT 7
VCR A.R OUT 8
GND
9
Pb/B
10
11
Y/G
Pr/R
12
1
2
3
4
5
6
7
8
9
10
11
12
PVD02
PDV02
1
DVD ENA
1
2
GND
2
3 DVD DATA OUT 3
4
DVD DATA IN 4
5
DVD CLOCK 5
6
DVD RESET 6
7
AMP DATA IN 7
8
AMP CLOCK 8
9
9
GND
10
AMP ENA
10
11 AMP DATA OUT 11
12 AMP RESET 12
PV602
P6M02
1
REMOCON
1
2
GND
2
3
FLD CLOCK
3
4
FLD DATA
4
5
FLD ENA
5
6 VOLUME DOWN 6
7
VOLUME UP 7
1
2
3
4
5
6
7
8
9
10
11
PDM03
SPM SPM +
FM FM +
LM LM +
SW(OPEN)
SW(CLOSE)
GND
SW(LOADIN)
GND
1
2
3
4
5
6
7
8
9
10
11
PV601
P6M01
1 KEY RETURN 1 1
2 KEY RETURN 2 2
3
5.3VA
3
4
VIDEO IN
4
5
GND
5
6
AUDIO ’L’ IN 6
7
GND
7
8
AUDIO ’R’ IN 8
9
9
GND
10
10
FD(-)
11
-27VA
11
12
FD(+)
12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
PDM01
H FM_VCC
RF_VCC
LD_DVD
MD_DVD
VR_DVD
GND_PD
VRBF
VC
F
B
A
D
C
B
FOCUS+
TRACKINGTRACKING+
FOCUSSW_PDIC
GND_LCD
LD_CD
MD_CD
VR_CD
KEY BOARD
TIMER
BOARD
MD
P6603
P6602
GND(D)
1
KEY RTN 1
2
GND(A)
3
F.A.R.IN
4
GND(A)
5
F.A.L.IN
6
GDN(D)
7
VIDEO IN
8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
2
3
4
5
6
7
8
3-2
OVERALL WIRING DIAGRAM
VCR PART
ELECTRICAL ADJUSTMENT PROCEDURES
1. Servo Adjustment
1) PG Adjustment
• Test Equipment
a) OSCILLOSCOPE
b) NTSC MODEL : NTSC SP TEST TAPE
• Adjustment And Specification
MODE
MEASUREMENT POINT
ADJUSTMENT POINT
SPECIFICATION
PLAY
V.Out
H/SW(W373, W374)
R/C TRK JIG KEY
6.5 ± 0.5H
• Adjustment Procedure
a) Insert the SP Test Tape and play.
b) Press the “O” key on the Remote controller and the “PLAY” key on the Front Panel the same time, the
unit then goes in to Tracking initial mode.
c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(W373, W374), and then check the distance (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 (412µs, 1H=63µs).
Note - Press FRONT CH UP KEY and FRONT PLAY KEY on Deck playback, and it goes in to ATR PRESET. after the SP Test Tape is inserted.
• PG Adjustment Method
a-1) Playback the SP standard tape
b-2) Press the “O” key on the Remote controller and the “PLAY” key on the Front Panel the same time,
Tracking initial mode.
c-3) Repeat the above step(No.b-2), the unit will then finish the PG adjusting automatically.
d-4) Stop the playback, the unit then exits PG adjusting mode after saving the PG data.
• CONNECTION
V.Out
OSCILLOSCOPE
H/SW(W373, W374)
CH1 CH2
R/C KEY
H/SW V.out
(W373, W374)
• WAVEFORM
H/SW
6.5H(412µs)
Composite
VIDEO
3-3
ELECTRICAL TROUBLESHOOTING GUIDE
1. Power(SMPS) CIRCUIT
(1) No 5.3VA (SYS/Hi-Fi/TUNER)
(2) No 12VA (TO CAP, DRUM MOTOR)
NO 5.3VA.
NO 12VA.
YES
Is the F101 normal?
YES
NO
Is the Vcc(13V) supplied NO
to (+) terminal in D126?
Replace the F101.
(Use the same Fuse)
YES
Is the BD101
normal?
Check or Replace
the D126.
YES
NO
Replace the
BD101.
Check or Replace
the Motor Vcc.
YES
Is the TH101
normal?
NO
Replace the TH101.
YES
Is Vcc(8.5~21V) supplied to IC104 Pin3?
NO
Is the D105
normal?
NO
YES
Check or Replace
the D105.
(3) No 5.0V (SYS/Hi-Fi/TUNER)
Is the D129
normal?
NO
NO 5.0VA.
Replace the D129.
YES
YES
Is there about 2.5V NO
at the IC106 Vref?
NO
Is 5.3VA put into
the Q167 Emitter?
Replace the IC106.
5.3VA Line Check.
YES
YES
Is the Q169 Base
“H”?
Check the Main PCB
5.3VA/5.0V Line short?
NO
Check the Power
Control.
YES
Is about 5V put into NO
the Q167 Base?
YES
Check or Replace
the Q167/Q169.
3-4
Check or Replace the
Q169, R175, R176, R177.
(4) No 5V (TO DVD)
(5) No 33V (TUNER)
NO 5V.
No 33V.
YES
YES
NO
Is 5.3VA put into
the Q168 Emitter?
5.3VA Line Check.
Is Q163 Base “H”?
YES
Is the Q169 Base
“H”?
YES
NO
Check the Power
Control.
Check or Replace
Q163, R168, R169.
YES
Is about 5V put into NO
the Q168 Base?
Check or Replace the
Q169, R175, R176, R177.
YES
Check or Replace
the Q168/Q169
(6) No 8V(TO DVD)
NO 8V.
YES
Is Vcc(13V) supplied to NO
(+) terminal in D126?
Check or Replace
the D126.
YES
Is Vcc(12V) supplied NO
to IC160 Pin1?
Check or Replace
the D163.
YES
Check or Replace
IC161, C163.
3-5
NO
Check the Power
Control.
2. SYSTEM/KEY CIRCUIT
(1) AUTO STOP
Auto Stop
YES
Does the SW30 waveform
appear at the IC501
Pin18?
NO
Check the Drum Motor
signal.
YES
NO
Do the T-UP Reel Pulses
appear at the IC501 Pin80?
YES
Do T/UP Reel Pulses
appear at the point
between R556 and R536?
YES
NO
Replace the T/UP Reel
Sensor (RS501).
Replace the IC501.
Does 5V appear at the
RS501?
YES
NO
Check the Q160 Power
Circuit.
(2) The unstable loading of a Cassette tape
The unstable loading of a
Cassette tape
YES
Is 12V applied to the
PMC01 Pin8?
NO
Refer to “SMPS DRUM
12 Volt Trouble Shooting”.
NO
Is 5V applied to the
R531 ?
YES
Does the “H” signal appear
at the IC501 Pin58 during
inserting the CST ?
YES
YES
Does the “L” signal appear
at the IC501 Pin60 during
inserting the CST?
Check the CST SW and
the peripheral circuitry.
NO
Refer to SMPS 5.3VA
troubleshooting.
NO
YES
Check the Deck
Mechanism.
Check the IC501
Pins22, 23, 24, 25.
Caution : Auto stop can occur because Grease or Oil has dried up
3-6
3. SERVO CIRCUIT
(1) Unstable Video in PB MODE
Unstable Video in
PB Mode.
YES
Does the Noise level of the
screen change
periodically?
YES
Do the CTL pulses appear
at the IC501 Pin97?
NO
Is adjusting the height of
the CTL Head accurate?
NO
YES
Does the CFG waveform
appear at the IC501
Pin87?
YES
On tracking do the CTL
pulses move?
Readjust the height of the
CTL Head.
NO
Replace the IC501.
YES
Does the Video Envelope
waveform appear at the
IC501 Pin9?
YES
NO
Refer to “(2)
No 12VA of Power section”
Replace the IC501.
(2) When the Drum Motor
(2) doesn’t run.
Do the Drum PWM Pulses
appear at the IC501
Pin76?
YES
When the Drum Motor
doesn’t run,
Does 12V appear at the
PMC01 Pin8?
YES
Check the connector
(PMC01) and the Drum
Motor Ass’y.
NO
YES
Aren’t the foil patterns and
the Components between
IC501 Pin76 and PMC01
Pin12 short?
Do the DFG Pulses appear
at the PMC01 Pin11?
NO
Replace the Cap M.
NO
YES
Does 2.8V appear at the
PMC01 Pin12?
Refer to “When the Y signal
doesn’t appear on the
screen in PB Mode”.
Do the DFG Pulses appear
at the IC501 Pin90?
NO
NO
YES
Do the Drum PWM Pulses
appear at the IC501
Pin76?
NO
Aren’t the foil patterns and
the Components between
IC501 Pin 90 and PMC01
Pin11 short?
Replace the IC501.
YES
Aren’t the connecting patterns and the Components
between IC501 Pin76 and PMC01 Pin12 short?
3-7
2. SERVO CIRCUIT
(3) When the Capstan Motor doesn’t run,
When the Capstan Motor doesn’t run,
Does 12VA appear at the PMC01?
NO
Refer to “SMPS(CAPSTAN/12Volt)
Trouble Shooting”.
YES
Is “DRUM CTL” 2.8V appear at the
PMC01?
YES
NO
Check the PMC01 and the Capstan
Motor Ass’y.
Does the PWM signal appear at the
IC501 Pin77?
YES
NO
Aren’t the foil patterns and Components
between IC501 Pin77 and PMC01
Pin9 short?
Does the CFG signal appear at the
PMC01 Pin1?
YES
NO
Does the CFG signal come into the
IC501 Pin87?
YES
Check the Capstan Motor Ass’y.
NO
Aren’t the foil patterns and component
between IC501 Pin87 and PMC01
Pin1 short?
Does the Capstan PWM signal appear at
the IC501 Pin77?
YES
NO
Aren’t the foil patterns and Components
between IC501 Pin77 and PMC01
Pin9 short?
Replace the IC501.
3-8
2. SERVO CIRCUIT
(4) KEY doesn’t working
KEY doesn’t working.
Is 5V applied to the IC501
Pin2, 3?
NO
Refer to “SMPS 5.3VA
Trouble Shooting”.
NO
Replace the defective
switches.
NO
Refer to “SMPS 5.3VA
Trouble Shooting”.
NO
Check or Replace the pheripheral Circurity.(L511,
R598, C596, C595)
YES
Does LED or FLD change
when a function button is
pressed?
4. OSD CIRCUIT
(1) No OSD display.
No OSD or F.OSD display.
Is 5.3V applied to the
IC501 Pin53?
YES
Does oscillation occur at
the IC501 Pins44, 45?
YES
Replace the IC501.
(2) I2C BUS CHECK
The I2C waves don’t
come out.
Does Power appear at the
Pull up impedence
(R569, R507)?
NO
Refer to “SMPS 5.3VA
Trouble Shooting”.
YES
Replace the IC501.
3-9
5. Y/C CIRCUIT
(1) No Video in EE Mode,
No Video in EE Mode
Does the Video signal
appear at the IC301
Pins28, 30, 32?
NO
Does the Video signal
appear at the IC302
Pins1, 5?
NO
Check DVD Video Input
(IC602, Pin4), Tuner Video
Input (TU701 Pin16), Line
Video Input (JK601),
respectively.
NO
Check the System Circuit.
(Refer to ‘SYSTEM I2C BUS
CHECK Trouble Shooting’)
YES
YES
Is there 5V at the IC302
Pin6?
YES
Replace the IC302.
Is REG 5.0V applied to the
IC301Pins23, 44, 45, 52, 68,
77?
NO
Check the REG 5V Line.
(Power Circuit)
NO
Is I2C BUS signal applied to
the IC301 Pins53, 54, 55?
YES
Does the Video signal
appear at the IC301 Pin26?
YES
Does the Video signal
appear at the IC501 Pin52?
YES
NO
Check the path of the signal between the IC301 Pin
26 and IC501 Pins50, 52.
NO
Is there 5V on the plus
terminal of the C614?
Replace the IC301.
YES
Does the Video signal
appear at the IC602 Pin7?
YES
Replace the IC602.
3-10
NO
Check the REG 5V Line.
(Power Circuit)
3. Y/C CIRCUIT
(2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode,
Is 5V applied to the IC301
Pins23, 44, 45, 52, 68, 77?
NO
Check the line of the REG
5V Line. (Power Circuit)
NO
Refer to ‘SYSTEM Y/C
BUS CHECK Trouble
Shooting’.
YES
Is the Y/C Bus siganl
applied to the IC301
Pins53, 54, 55?
YES
Does the normal RF signal NO
appear at the IC301 Pin 14?
NO
Is the V.H.S/W signal
applied to the IC301 Pin57?
Check the System Circuit.
(IC501 Pin18)
YES
Does the Rectangular
waveform(5V) appear at
the IC301 Pin57(V.H.S/W)
YES
YES
Clean the Drum.
Does the Y(Luminance)
signal appear at the IC301
Pin20?
NO
Check the R328, R347,
C322, C323.
YES
Is the Y(Luminance) Video NO
waveform showed up at the
IC301 Pin22?
Check the C324.
YES
Replace the IC301.
3-11
NO
Check the V.H.S/W level.
3. Y/C CIRCUIT
(3) When the C(Color) signal doesn’t appear on the screen in PB Mode,
Is 5V applied to the IC301
Pins23, 44, 45, 52, 68, 77?
NO
Check the line of the REG
5V Line. (Power Circuit)
YES
Does the fsc signal appear
at the IC301 Pins41, 50?
YES
NO
Is normal the X301
(3.58MHZ) of oscillation
Frequency?
NO
Does the Color signal
appear at the IC301 Pin48?
NO
YES
Replace the IC301.
Replace the IC301.
3-12
Replace the X301.
Check the C342, C341,
R333.
3. Y/C CIRCUIT
(4) When the Video signal doesn’t appear on the screen in REC Mode,
REC mode
YES
Is EE mode normal?
YES
Is brightness normal?
NO
Check the EE mode
YES
YES
Is color normal?
Does signal appear at
IC301 Pins41, 50?
Is 5V supplied to IC301
Pins23, 44, 45, 68, 77?
Check X301 oscillation
frequency.
NO
Check the 5V power
YES
YES
Check the REG 5V power
YES
NO
YES
Check the power of Pins23,
44, 45, 52, 68, 77.
A
NO
YES
Is the brightness signal sup- NO
plied to IC301 Pins18?
YES
Is Y/C Bus applied to
IC301 Pins53, 54, 55?
NO
Check system part
YES
Do X301 and X-TAL
oscillate?
NO
Check X301.
A
YES
Is V.H SW supplied to
IC301 Pin57?
NO
Check system part
(V.H/SW)
YES
Does the FM signal appear
at IC301 Pins73(SP)/
66(EP)?
NO
Check the drum
YES
Replace the IC301.
3-13
*OPTION
Pins72, 73, 74(SP)
Pins65, 66, 67(EP)
6. Tuner/IF CIRCUIT
(1) No Picture on the TV screen
No picture on the TV
screen
YES
Does the Video signal at
the TU701 Pin16.
NO
Is +33V applied to TU701
Pin14?
NO
Check 33V line.
YES
YES
Is +5V applied to TU701
Pin3?
NO
Check 5V line.
YES
Does the Clock signal
appear at TU701 Pin9?
NO
Check the lIC Clock Signal
of µ-COM Pin71.
NO
Check the lIC Data Signal
of µ-COM Pin72.
YES
Does the data signal
appear at TU701 Pin10?
YES
Replace Tuner.
Does the video signal
appear at IC302 Pin7.
NO
Check the signal flow from
IC501 Pin27.(Pin27 is ‘L’
state in Tuner Mode)
NO
Check the signal from IC301
Pin26 to IC501 Pin50.
NO
Check the signal from IC501 Pin52 to IC602 Pin1 and IC602 Pin2.
(IC602 Pin2 is ‘L’ state in VHS mode)
YES
Does the Video signal at
the IC501 Pin 52.
YES
Does the Video signal at
the IC602 Pin 7.
YES
Check the signal flow from IC602
Pin7 to JK601 Pin Video out.
3-14
(2) No Sound
No Sound.
YES
Check the Vcc of TU701 Pins3, 14.
NO
Check 5.2V, 33V Line.
YES
Check the Tuner SiF signal at IC801
Pin57.
NO
Check the Tuner SIF of TU701 Pin13.
YES
Check the Audio of IC801 Pins78, 80.
NO
YES
Check the Signal flow from IC801 Pins78,
80 to JK601 Audio out(L), (R)
3-15
1. Check the Vcc(5.3VA, 9V) of IC801
Pins3, 5, 36, 54.
2. Check the IIC Clock and Data at IC801
Pins37, 38.
7. Hi-Fi Circuit
A.
Hi-Fi Playback.
YES
No sound
Check the Vcc of IC801.
(Pins 3, 15, 32, 46)
NO
YES
Check the Hi-Fi Selection
Switch and the Tape quality.
Check power.
YES
Is the RF waveform at
IC801 Pin 23 over 3V
Vp-p?
YES
NO
NO
Is Pin 30 of IC801 over
3.5V ?
Check REC start “H” signal
of µ-COM.
YES
Is the Head switching signal
IC801 Pin 39 O.K?
YES
Check the connection at
P3D01 if good then
Replace IC801.
Check IC801 Pin 37(Data),
Pin 38(Clock).
YES
NO
Is IC801 Pin 49(A.Mute)
“High”?
Check Ports of µ-COM.
YES
Do Audio signals appear at
IC801 Pin 80(L-CH),
78 (R-CH)?
YES
Check the Contact point
of Audio Output.
Check A.MUTE port of
µ-COM (Pin High of
IC501).
NO
Replace IC801.
3-16
NO
Check IC501 Pin 19.
(Audio Swich 30)
B.
Hi-Fi REC.
It is impossible to record and playback
Hi-Fi Audio signal.
YES
Check Vcc of IC801. (Pins 3, 15, 32, 46)
YES
NO
Check IC801 Pin 37(Data),Pin 38(CLOCK).
YES
Check Power.
NO
Is IC501 Pin 84(A.Mute) “High”?
YES
Check ports of µ-COM.
NO
Are Audio signals present at IC801
Pins 78, 80?
YES
Check the Port of µ-COM.
NO
Do FM Audio signals appear at IC801
Pin 26?
YES
Check Audio Input signal Line
(9, 11, 12, 71, 73, 74), Tuner(57).
NO
Is IC801 Pin 17(REC “H”) “High”?
YES
Replace IC801.
NO
Check the Contact Points of Drum
Connector if good then Replace the Drum.
Check the Port of u-COM.
3-17
BLOCK DIAGRAMS
1. POWER(SMPS) BLOCK DIAGRAM 1
PSW01
!
BD101
T101
32VA
BD101
NC
RECTIFER & SMOOTHING
BLOCK
C103
NC
PWR SENSE
( D122, C131, R131,
C132, C133, C135, L122 )
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)
FEED-BACK
BLOCK
PWR SENSE
BLOCK
( R122, R121, C136,
R123, R124, R125,
R126 )
! IC102
( R184, R185 )
IC103
LINE FILTER
BLOCK
!
( C101, C102,
L101, L102 )
PSV01
T102
F102
SNUBBER
BLOCK
(D123, C130, ZD121, R127)
( R110, C115,
D104, C117 )
-29VA
( D124, C137, R128 )
33VA
13VA
3.8VA
( D125, R129, C138 )
RECTIFIER & SMOOTHING
BLOCK
( R107, R108, C121, R105,
C120, C119, ZD1103, D105,
R111, BC102 )
V101
FD(-)
RECTIFIER & SMOOTHING
BLOCK
RECTIFIER &
SMOOTHING
BLOCK
DRIVE & S/W BLOCK
SOFT-START BLOCK
!
FD(+)
RECTIFIER &
SMOOTHING
BLOCK
5.3VA
( D126, C140, L122, C141 )
!
F101
RECTIFIER & SMOOTHING
BLOCK
( D127, C142, L123, C146 )
C114
!
C113
RECTIFIER & SMOOTHING
BLOCK
!
( D129, C144, L124, C147 )
PW101
FEED-BACK
BLOCK
C122
!
!
( R132, R133, C148,
R134, R135, R136,
R137 )
! IC105
BR BL
(BK) (WH)
NOTES)
Symbol denotes AC ground.
NOTES)
Symbol denotes DC chassis ground.
IC106
TOSHIBA
SD-V55HTSU/SC
3-18
3-19
2. POWER(SMPS) BLOCK DIAGRAM 2
TO SYS
FD(+)
TO SYS
FD(-)
TO SYS
-29VA
3.3V BLOCK
(IC161, C164)
33VT BLOCK
TO TU
33V
(Q163, R168,
R169, R170)
PVD01
8V BLOCK
FD(+)
15
FD(-)
14
-29VA
13
GND
12
33VA
11
GND
10
13VA
9
(IC160, D163,
C163, R161)
9V BLOCK
(Q162, R171, ZD163)
3.3V BLOCK
5V BLOCK
(IC163, C177)
1
5.3VA
2
5.0V
3
8V
4
GND (M)
5
9V
6
GND (A)
7
3.3V
GND
8
3.8VA
7
3.8VA
6
3.5V BLOCK
10
3.5V
GND
5
(IC162, D165, C172)
11
A.GND
5.3VA
4
12
D.GND
5.3VA
3
GND
2
GND
1
(Q168, R178, R179,
R180, C169)
5.2V BLOCK
8
5V
9
GND
(Q167, C168, R175,
R176, R177)
TO SYS
5.3VA
PVS01
PWR CTL BLOCK
(Q169, C170, R181,
R182, R183)
REG 5V
TO TU/SYS/ Hi-Fi
5.2V
FROM µ-COM
PWR CTL 'H'
TO AVCP
REG 5V
(Q166, C166, C167,
R174, ZD161)
TOSHIBA
SD-V55HTSU/SC
3-20
3-21
3. Y/C BLOCK DIAGRAM
59
ENV
DET
58
57
55 54 53
Y/C ENA
Y/C DATA
Y/C CLOCK
57
55 54 53
X-TAL
3.58MHZ
V. H/SW
(REC Mode)
Y/C ENA
Y/C DATA
Y/C CLOCK
(PB Mode)
51 50 49 48 47
SERIAL
DECODER
AUDIO C-ROT
MUTE RF-SW
HA SW IN
OUT
VX01
320FH
VCO
SLD
OUT
38
REC
APC
REC
AFC
CCD
CCD
CLAMP
DET
65
67
CLAMP
72
P
C-LPF
69
3.58M
BPF1
ACC
DET
SUB
CONV
70
MAIN
CONV
4.21M
BPF
SUB
CONV
YNR
COMB
CLAMP
SP REC
Y
LPF
34
CLAMP
73
R
B-UP
AMP
32
ACC
AMP
3.58M
BPF1
ACC
DET
VIDEO
AGC
30
YNR
COMB
DETAIL
ENH
CLAMP
NL
EMPHA
MAIN
EMPHA
Y
LPF
28
TU/LINE1
DVD
LINE2
FM
MOD
Y/C
MIX
74
R
34
MAIN
CONV
4.21M
BPF
66
BGA
3.58M
BPF2
ACC
AMP
SP PB 'A'
EP REC
VCA
VCA
P
C-LPF
SP PB 'B'
36
37
36
P
CNC
EP PB 'B'
IN
P
DOUBLE
LIM
FM
DEM
SUB
LPF
6dB
26
V.OUT
V.OUT
26
REC
FM-EQ
MAIN
DE-EM
22
FM
AGC
PB
FM-EQ
4.7K
EP PB 'A'
37
CLAMP
IN
64 ACC
39
39
22
B
21
B
21
20
TOSHIBA
SD-V55HTSU/SC
3-22
3-23
IC302
SW
BLOCK
3-24
5
6
3-25
1
LINE AUDIO(L) IN
LINE AUDIO(R) IN
A_IN
RF MOD.
13
55
ENA
54
71
9
2
From u-COM
78
A. OUT (R)
80
OUTPUT
SELECT
INPUT
SELECT
SIF
DE MOD
IC801
LA72670M
DATA
4
A. OUT (L)
CLOCK
57
53
10
78
A. OUT (R)
80
OUTPUT
SELECT
INPUT
SELECT
SIF
DE MOD
A. OUT (L)
AMP
74
12
73
11
71
9
2
57
6
4
6
ALC
10
76
OUTPUT
SELECTOR
IC801
LA72670M
10
76
NORMAL
AUDIO
OUT
(System)
4
NORMAL
AUDIO
OUT
2
78
80
ALC
REC
AMP
DET
9
MOD. OUT
A. OUT (R)
A. OUT (L)
IC301
LA71206M
DET
IC301
LA71206M
2) PB Mode
SIF
TUNER
TU701
EQ
AMP
REAR Jack
2
3
EQ 4
N.A.IN
LA71206M
IC301
DVD AUDIO
REAR JACK
LINE AUDIO(L) IN
LINE AUDIO(R) IN
1
13
IC801
LA72670M
1) EE Mode
R/P HEAD
REAR Jack
A_IN
RF_MOD
SIF
TUNER
TU701
4. NORMAL AUDIO BLOCK DIAGRAM
3) REC Mode
TOSHIBA
SD-V55HTSU/SC
5. Hi-Fi BLOCK DIAGRAM
A
DVD AUDIO
REAR JACK
FRONT
57
DVD A.IN 'L'
12
DVD A.IN 'R'
74
AV1 A.IN 'L'
11
AV1 A.IN 'R'
73
AV2 A.IN 'L'
9
AV2 A.IN 'R'
71
DEMO
DULATE
26
27
Hi-Fi PB 'A'
SIF
24
Hi-Fi REC
AUDIO INPUT
BLOCK
Hi-Fi PB 'B'
Hi-Fi/
REC
B
FM MODU
DE MODU
80
78
INPUT
SELECT
A.OUT 'L'
A.OUT 'R'
A.OUT
To JACK
OUTPUT
SELECT
3
IC801
LA72670M
6
MODULATOR
A.OUT
(To Tu)
4
NORMAL AUDIO
OUT(To AVCP)
NORMAL AUDIO
IN(From AVCP)
TOSHIBA
SD-V55HTSU/SC
3-26
3-27
6. SYSTEM BLOCK DIAGRAM
TO/FROM DECK
TO/FROM AVCP
5.3VA
23 MODE S3
CV IN
50
SQPB
H.A.SW
D.V.Sync
V. ENV
V.H.SW30
9 18 13 16 59
60
LD CTL
DPG
CFG
90 87 12
CAP. REV 'H'
24 MODE S2
76 95 94
CTL -
77
I-Limit
25 MODE S1
CTL +
11
GND
MODE S1
MODE S2
MODE S3
MODE S4
CAP. PWM
MS501
DRUM PWM
MODE S/W
COMP IN
17
REC 'H' 74
C.ROT 15
A.MUTE'H' 84
22 MODE S4
S clk
S in
S out
R/C
67
66
PM6001
65
14
IC601
FLD DRIVE IC
P6M01
FLD
X502
14MHz
38 X in
OSC
5V
TAPE TOP
R550
X501
ES501
32.768KHz
A. ENV
A. H.SW
A. MUTE 'H'
REC 'H'
39 X out
35 Xc in
OSC
IC501
M37760
36 Xc out
ES502
R535
LD501
DECK IR LED
R553
C534
R537
TAPE
END
RS501
OSD
80 T/U REEL
R536
T-UP REEL
TO/ FROM TU/IF
PLL CLK 71
PLL DATA 72
VCR 'H' 26
C535
R556
TO Hi-Fi ONLY
CV OUT 52
AFT 100
20 END Sensor
R564
TO/FROM AUDIO(Hi-Fi)
74
2
I C CLK 71
2
I C DATA 72
21 TOP Sensor
R557
8
19
68
(X2) CLK 64
(X2) DATA 63
TO DIGEST
(X2) DATA 50
CVIN FROM A/V
R555
RS502
R538
Vss (AMP)
Vss (OSD)
Vss (SYSCON)
Vcc (A/D)
Vcc (OSD)
Vcc
(SERVO)
Vcc
(SYSCON)
R558
OSC out 2
SUP REEL
44
45
88
49
40
99
53
98
C582
58 CST IN
POWER FAIL 78
OSC in 2
79 SUP Reel
37
CST.SW/REC TAP
5.3VA
C500
R531
CS501
R544
R5C6
IC504
34
3
RESET
L511
R598
C595
C596
GND
2
1
Q503
+
+
Vcc
GND
2
1
L512
C592
+
+
3
R583
R529
IC505
5.3VA
R541
Q501
OSC
C552
Vcc
5V
C503
C561
L501
TOSHIBA
SD-V55HTSU/SC
3-28
3-29
CIRCUIT DIAGRAMS
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE TOSHIBA ELECTRONICS CORPORATION.
ALL COMPONENTS SHOULD BE REPLACED ONLY
WITH TYPES IDENTICAL TO THOSE IN THE ORIGI-
1. POWER(SMPS) CIRCUIT DIAGRAM 1
No power.
BD101, TH101 are defective.
Switching Error.
IC101 is defective.
No 32VA.
D122 is defective.
Digitron Error.
D123, F102, ZD121, D124 are defective.
No 33VA.
D125 is defective.
Switching Error.
IC104 is defective.
No 13VA.
D126 is defective.
No 3.8VA.
D127 is defective.
No 5.3VA.
D127 is defective.
No Power.
F101 is defective.
Switching Error.
IC105, 106 are defective.
NOTES)
Symbol denotes AC ground.
NOTES)
Symbol denotes DC chassis ground.
NOTE)
NOTE)
NOTE)
NOTE)
Warning
Parts that are shaded are critical
With respect to risk of fire or
electricial shock.
3-30
3-31
NAL CIRCUIT. SPECIAL COMPONENTS ARE SHADED NOTE :
ON THE SCHEMATIC FOR EASY IDENTIFICATION.
1. Shaded( ) parts are critical for safety. Replace only
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFwith specified part number.
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
2. Voltages are DC-measured with a digital voltmeter
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.
2. POWER(SMPS) CIRCUIT DIAGRAM 2
3-32
3-33
3. JACK, TUNER CIRCUIT DIAGRAM
3-34
3-35
4. A/V CIRCUIT DIAGRAM
IC301 Pins 53, 54, 55 are defective.
IC301 doesn’t operate.
6
X301 is defective.
PB COLOR Signal disappear.
IC301 Pin 57 is defective.
PB COLOR Signal disappear.
3
IC301 Pin 59 is defective.
Auto Tracking is failed.
9
2
8
5
4
1
1
7
1
PB Y+C
REC Y+C
WAVEFORM
FL301, Q304, Q305 are defective.
Normal Audio Signal is not recorded.
3-36
3-37
Q306, Q307 are defective.
EE, PB Screen doesn’t appear.
5. Hi-Fi CIRCUIT DIAGRAM
IC801 Pins37, 38 aredefective.
No Audio
23 Pin is defective.
No Hi-Fi Audio
REC
PB
3-38
3-39
6. SYSTEM CIRCUIT DIAGRAM
4 5
7
6
8
2
3
1
OSD will not operate.
µ-COM will not operate.
X501, X502 are defective.
L511, R598, C595,
C596 are defective.
OSD is unstable.
R597, C590, C589 are defective.
Deck will not operate.
R575, R576, R577,
R578 are defective.
µ-COM is unstable.
Q501, Q503 are defective.
Auto stop occures.
RS501, RS502 are
defective.
WAVEFORM
Tape mode not working.
(Tape remaining on reels)
Auto Rew will not start.
ES501, ES502, LD501 are
defective.
3-40
3-41
7. KEY CIRCUIT DIAGRAM
3-42
3-43
• WAVEFORMS
* IC301 Waveform
* IC501 Waveform
280 Acqs
Tek Stop : 10.0KS/s
299 Acqs
T
Tek Stop : 250KS/s
T
18 Acqs
Tek Stop : 10.0KS/s
T
Trigger Position: 12%
27 Acqs
Tek Stop : 10.0KS/s
T
T
T
T
1
T
1
1
Ch1
IC301 Pins 20, 21, 22
100mV/10msec DIV
VV/EE
20 Main DE Emphasis Filter
21 Main DE Emphasis out
22 Clamp in
IC301 Pin 32
200mV/10msec DIV
EE
(VIDEO IN)
IC301 Pin 41
100mV/0.2msec DIV
REC/PB
(2fsc)
IC301 Pin 25
1.0V/20msec DIV
VV/EE
(C-SYNC OUT)
1.00 V
M5.00ms
Ch1
3.04 V
IC501 Pin 18
REC/PB
1.00 V
M 200µs
Ch1
1.00 V
IC301 Pin 14
100mV/5msec DIV
PB
(PB RF out)
IC301 Pin 73
500mV/2msec DIV
SP REC
(REC RF)
(DPG)
IC501 Pin 94
REC
IC301 Pin 66
500mV/2msec DIV
EP REC
(REC RF)
3-44
3-45
Ch1
3.04 V
Ch1
1.00 V
IC501 Pin 87
REC/PB
3.04 V
Trigger Level: 340mv
2 Acqs
T
1
Ch1
M5.00ms
Ch1
T
1
1.00 V
M5.00ms
Tek Stop : 5.00KS/s
(DFG)
Ch1
1.00 V
IC501 Pin 95
REC
T
1
1
3.04 V
Ch1
T
IC301 Pin 49
100mV/0.2msec DIV
PB/REC
(3.58MHz X-TAL IN)
Ch1
IC501 Pin 13
QUE/REV
T
IC301 Pin 26
500mV/10msec DIV
EE
(VIDEO OUT)
M 5.00ms
120 Acqs
Tek Stop : 50.0KS/s
T
Ch1
3.04 V
IC501 Pin 13
QUE/REV
35 Acqs
Tek Stop : 10.0KS/s
Ch1
M1.00ms
Ch1
500mV
M 10.00ms Ch1
3.04 V
IC501 Pin 90
REC/PB
(DPG/DFG)
IC501 Pin 97
PB
(CTL OUT)
340V
• CIRCUIT VOLTAGE CHART
MODE
PIN NO.
EE
PLAY
IC301
MODE
PIN NO.
EE
PLAY
MODE
PIN NO.
EE
PLAY
MODE
PIN NO.
EE
PLAY
MODE
PIN NO.
EE
PLAY
MODE
PIN NO.
EE
PLAY
Location
No.
Base
Emitter
EE
PB
EE
PB
Collector
EE
PB
55
0.68
0.93
20
0
0
75
0
0
5
5.19
5.19
60
3.86
0.23
Q301
4.26
4.26
4.97
4.96
4.907
4.91
1
2.3
2.31
56
0
0
21
0.11
0.11
76
0
1.79
6
1.91
2.07
61
3.15
0.24
Q302
0.758
1.74
0
0
0
0
2
2.29
2.28
57
0
2.56
22
5.17
5.17
77
0
2.72
7
0
0
62
4.02
0
Q303
0.734
0.72
0
0
0
0
3
2.29
2.28
58
0
1.61
23
]5.17
5.17
78
0
4.76
8
0.29
1.31
63
3.83
0
Q304
0
0
0
0
0
0
4
2.29
2.28
59
0
2.9
24
5.17
5.17
79
0
0
9
0
0
64
2.45
0
Q305
4.92
4.92
4.94
4.93
0
0
5
2.31
2.29
60
4.91
0.94
25
0
0
80
0
0
10
0
0
65
3.87
0.32
Q306
1.828
1.86
2.45
2.5
0
0
6
2.3
2.31
61
2.92
1.94
26
5.13
5.13
81
0
0
11
0
0
66
4.09
0.32
Q307
1.843
2.05
2.51
2.62
0
0
7
0
2.31
62
0
0
27
5.13
5.17
82
4.94
4.94
12
2.5
2.5
67
3.88
0.31
Q308
5.19
5.19
4.87
4.91
4.93
4.92
8
2.31
2.32
63
3.96
3.98
28
5.13
5.13
83
5.03
4.98
13
1.91
2.44
68
3.94
0.31
Q309
0
0
0
0
4.91
4.97
9
2.31
2.31
64
1.76
1.72
29
0
0
84
0
0
14
2.49
2.49
69
0
0
Q501
0.68
0.68
0
0
0
0
10
2.25
2.27
65
1.84
1.85
30
0
0
85
2.69
2.67
15
5.06
5.05
70
0
0
Q503
5.17
5.17
4.48
4.48
5.15
5.15
11
4.93
4.93
66
1.84
1.86
31
0
0
86
0.58
0.68
16
2.51
2.51
71
0
0
Q504
2.82
2.94
2.18
2.27
4.95
4.95
12
1
1
67
1.84
1.86
32
0
0
87
0.17
2.36
17
0
0
72
3.86
0.31
Q505
1.58
1.58
1.03
2.24
4.96
4.96
13
0.97
0.97
68
4.93
4.93
33
0
0
88
0
0
18
0
0.86
73
0
0
Q506
5.07
0
0
0
0
3.29
14
1.92
1.89
69
0.18
0
34
5.15
5.15
89
0.54
0
19
2.51
2.44
74
2.5
2.5
Q507
2.8
2.6
0
3.23
0
0
15
1.55
1.53
70
0.15
0
35
1.52
1.51
90
0.1
1.36
20
2.52
2.45
75
3.87
0.4
Q805
2.56
2.56
2.08
2.08
5.06
5.05
0.22
16
0
0
71
0
0
36
1.43
1.44
91
2.53
2.54
21
2.52
2.43
76
3.17
17
2.37
2.55
72
1.82
0.71
37
5.15
5.15
92
2.54
2.53
22
2.51
2.42
77
0
0
18
2.39
1.45
73
1.82
0.71
38
2.19
2.18
93
0.21
0
23
0.19
3.66
78
4.42
4.3
19
0
0
74
1.82
0.71
39
2.28
2.27
94
2.5
2.49
24
2.25
2.3
79
0
0
20
2.46
2.49
75
0
0
40
0
0
95
2.5
2.49
25
0
0
80
4.4
4.3
21
1.73
1.79
76
2.3
2.3
41
0.51
0.55
96
2.52
2.52
26
2.24
2.3
22
3.07
2.29
77
4.96
4.96
42
0.26
0.55
97
2.52
2.52
27
2.25
2.3
23
4.96
4.95
78
2.3
2.3
43
0.26
0
98
5.08
5.08
28
0
0
24
0
0
79
0
0
44
2.35
2.34
99
5.17
5.17
29
2.48
0.11
25
0.36
0.35
80
2.3
2.3
45
2.41
2.41
100
2.64
1.95
30
0
1.34
26
1.83
1.87
46
0
0
31
2.51
3.79
27
1.47
1.6
1
2.96
2.96
47
1.29
0
1
5.19
5.19
32
5.02
5.01
28
2.25
2.56
2
0
0
48
0
0
2
0
0
33
2.64
2.65
29
2.32
2.31
3
3.01
3
49
0
0
3
5.14
5.14
34
2.64
2.64
30
2.25
2.26
4
5.12
5.12
50
1.88
1.99
35
0
0
31
4.08
4.08
5
2.95
2.95
51
0.53
0.57
1
5.19
36
5.06
5.05
32
2.25
2.26
6
4.97
4.97
52
1.88
1.98
2
0
0
37
5.17
5.05
33
3.62
2.8
7
2.2
2.2
53
4.96
4.95
3
4.7
4.7
38
5.17
5.17
34
2.97
2.93
8
0
0
54
2.03
2.03
39
0
2.57
35
3.13
3.14
55
2.6
1.92
1
1.93
1.93
40
0.19
0
36
2.37
2.37
1
0.97
0
56
1.96
2.05
2
2.01
2.01
41
2.52
2.45
37
2.35
2.29
2
5.17
5.17
57
0
0
3
5.05
5.05
42
2.51
2.43
38
0
0
3
5.17
5.16
58
0
0
4
1.7
1.7
43
2.52
2.45
39
1.82
1.87
4
0
0
59
0
0
5
0
0
44
2.52
2.45
40
0
0
5
0.5
0.54
60
2.57
2.58
6
5.05
5.05
45
0
0.25
41
0.83
0.83
6
0
0
61
0
4.28
46
5.06
5.05
42
2.34
2.37
7
0.4
0.42
62
0
0
1
2.51
2
47
2.49
2.49
43
0
0
8
0.19
4.06
63
0
0
2
0
0
48
1.9
2.42
44
4.92
4.92
9
0.29
3.91
64
0
0
3
2.27
2.35
49
0
0
45
4.95
4.95
10
0.68
0.99
65
0.97
0.86
4
0
0
50
0
0
46
2.27
3.17
11
0
3.42
66
2.38
0
5
0
0
51
2.05
2.06
47
3.31
3.31
12
0
0
67
5.07
5.07
6
5.06
5.06
52
1.22
0
48
3.32
3.32
13
0
0
68
4.7
4.45
7
2.53
2.04
53
3.86
0.25
49
3.94
3.94
14
4.78
4.78
69
5.02
4.97
8
0
0
54
9.2
9.19
50
2.54
2.55
15
0
2.57
70
4.75
4.61
55
6.26
0.28
51
2.12
2.09
16
0
0
71
5.17
5.17
1
0
0
56
1.96
0.29
52
4.95
4.95
17
0.68
0.43
72
5.17
5.17
2
2.56
2.54
57
2.2
2.15
53
4.75
4.62
18
2.56
2.57
73
0
0
3
9.21
9.18
58
4.56
0
54
4.7
4.52
19
2.57
2.57
74
0
0
4
2.48
2.48
59
2.52
2.35
IC302
IC501
IC504
IC505
5.19
IC601
IC602
IC801
3-46
3-47
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD
LOCATION GUIDE
3-48
3-49
2. POWER P.C.BOARD
LOCATION GUIDE
3-50
3-51
3. KEY 1(LEFT) P.C.BOARD
LOCATION GUIDE
4. KEY 2(RIGHT) P.C.BOARD
LOCATION GUIDE
3-52
3-53
DVD & AMP PART
ELECTRICAL TROUBLESHOOTING GUIDE
1. System operation flow
Power On
1. 8032 initializes SERVO, DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC
Show LOGO
Yes
Tray Closed?
No
Tray Close to Closed position
SLED at Inner
Side?
Yes
No
SLED Moves to Inner Position
Judge whether have disc and disc type
2. Jump to related disc reading procedure
OPEN/ CLOSE
Key?
No
1. Execute Pressed Key & IR Key
1. Stop Playback & Open Tray
2. Display tray open message & LOGO
No
Receive
CLOSE Key?
Yes
3-54
2. Test & debug flow
TEST
Check the
AC Vol tage
Power PCBA (110V
or 220V)
No
Check the POWER PART
Yes
Switch on the Power PCBA
Is
the DC Voltage
outputs OK?
(5V, 3.3V, 8V, 12V)
No
Check the POWER PART
Yes
Is 3.3V and 2.5V DC
outputs normal on main
PCBA?
No
Check the regulators or diode(D501).
Yes
Communication between
VCR & DVD is normally?
No
Check the cable connection.
(PDV03)
Yes
Connect to PC RS232 Cable and
update the FLASH memory code.
Update
FLASH(IC5A1)
successfully?
No
1. Check 27MHz system clock.
2. Check systemreset circuit.
3. Check FLASH R/Wenable signal PRD,
RWR.
4. Check RS232 SIGNALS.
5. Check FLASH Memory related circui t.
Yes
Replace FLASH( IC5A1)
A
3-55
A
RESET or Power On.
Show LOGO?
NO
Flash
Memory operates
properly?
NO
Check connection lines between FLASH
& MT1379 and the FLASH access time
whether is suitable or not.
NO
Check connection lines between
SDRAM(IC502,IC503) & MT1379 and the
SDRAM is damaged.
YES
YES
SDRAM
works properl y?
YES
MT1379
VIDEO outputs
properly?
NO
Check the related circuit of MT1379.
(IC501 PIN 161,166, 168 check)
YES
Have
TV signal output?
NO
Check the filtering and amp circuit of
TV signal .(IC507)
YES
Check AV cable
connection to TV set .
Does
Tray move inside
when it is not at
closed position?
YES
NO
Normal
TROUT & TRIN
signals?
NO
Check the load OPEN &
CLOSE switch
NO
Check the Tray control IO pins
on MT1376 & MT1379.
NO
Check the Tray control amplifying
circuit on Motor driver.(IC402)
YES
Normal
TRCLOSE &
TROPEN signal?
YES
Normal
LOAD+ & LOADsignal ?
YES
B
Check the cable connection between
main PCBA and loader. (MECHA)
3-56
B
Does
the SLED move
No
to inner side when it is at
outer position?
Yes
No
Motor Driver STBY
Pin is High?
Check the connection line of
STBY signal .
OK
Yes
Motor Driver STBY
Pin is High?
No
Check the related circuit of
FMSO.
No
Check the amp circuit on
motor driver.
Yes
SL+ and SL- output
properly?
Yes
Do not put in disc and tray
close.
Optical
Lens has movements
for searching
Focus?
Yes
Check the cable connection
with MECHA.
No
Proper FOSO outputs
to motor driver?
No
Check FOSO connection on
MT1379 and motor driver.
No
Check the amp circuit on
motor driver.
Yes
Proper F+
& F- outputs?
Yes
C
Check cable connect of the
pick-up head.
3-57
C
Laser turns on when
reading disc?
No
Yes
LD01 or LD02 output
properly?
No
Check the laser power circuit
on MT1336 and connecting to
power transistor. (Q404, Q405)
No
Check the related circuit on
laser power transistor
Yes
Collector
voltage of power
transistor is OK?
(Q404, Q405)
Yes
Check cable connection between
transistor output and pick-up head.
Disc ID is correct?
No
Proper RFL signal
on MT1336?
No
Check the related circuit
on MT1336 RFL signal .
Yes
Yes
Check the RFL connection
between MT1336 and MT1379.
Does spindle rotate?
Yes
No
Proper
DMSO signal on
MT1379
No
Check DMSO related
circuit on MT1379.
No
Check the spindle control
amp circuit of motor driver.
Yes
SP+ & SP- output
properly?
Yes
Check the cable connection
between spindle and main PCBA.
D
3-58
D
Yes
Focus ON OK?
No
Proper
signals on A, B, C,
D of MT1336
No
Check connections between
MT1336 and pick-up head.
No
Check the related circuit
on MT1336 FEO signal .
Yes
Yes
Proper FEO signal
on MT1336?
Yes
Check FEO connection
between MT1336 and MT1379
Track On OK?
No
Proper FEO signal
on MT1336?
No
Check the related
circuit on MT1336
Yes
Yes
Properly TRSO signal
on MT1379?
No
Check the TRSO connection
on MT1379 and motor driver.
Yes
T+ & T- output
properly?
No
Yes
Check cable connection on
pick-up head.
Disc play?
No
Check RF signal waveform.
Yes
OK
3-59
Check the tracking control
amp circuit on motor driver.
E
Normal
Audio output
when disc playback?
YES
NO
Audio
DAC received
correct data stream?
NO
Check connection between MT1379
& Audio DAC. (Check ARCK, ALRCK
ACKL, ASDAT3)
NO
Check the related circuit of
Audio DAC. (Check Audio
out Pins 8, 5)
YES
Normal
Audio DAC
out? (IC206)
YES
Check Audio filter, amplify, mute
circuit. (IC205 Application circuit)?
TEST END
3-60
3. AUDIO µ-COM Circuit(DVD & AMP)
POWER ON
Does CD/DVD appear
at FLT?
NO
Does CD/DVD appear
at FLT?
YES
Does Loading appear
at FLD?
YES
NO
NO
YES
Check power part of Main
B/D.
YES
YES
Check DVD Module.
Check Connector (DVV01)
if is normally.
NO
Reconnet it.
YES
Check if DVD an Audio
Micom Insert is OK.
Check Power.
NO
YES
YES
Does no Dise or Time
appear at FLD?
Does it appear DVD Error
at FLD?
NO
Refer to SMPS.
YES
NO
Check oscillator of X101.
NO
Refer to oscillator Circuit.
YES
Check if PN102 is high.
NO
Check DVD Reset
Waveform.
NO
Check IC101 Reset
Waveform.
YES
Check SMPS.
Check if IC101 Pin53
is high.
YES
Check if IC101 Pin9, 36,
59 is high(5V).
NO
Check 3.3V line.
YES
Check if IC101 Pin49
is high.
NO
YES
Replace IC101.
3-61
Check Power dection
Circuit.
NO
OK
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK,RESET,FLASH R/W SIGNAL
1) MT1379 main clock is at 27MHz(X501)
3.8V, 27MHz
FIG 1-1
2) MT1379 & MT1336 reset is high active.
Power Cord in
5.2VA
PWR_CTL(SYSTEM µ-COM)
IC501 PIN83)
M_RESET(PDV03 PIN6)
URST(IC501 PIN 188)
FIG 1-2
3-62
3) RS232 waveform during procedure(Downloading)
TXD(J501 PIN3)
RXD(J501 PIN 2)
FIG 1-3
4) Flash R/W enable signal during download(Downloading)
FRD(IC5A1 PIN 28)
FWR(IC5A1 PIN 11)
FIG 1-4
3-63
2. SDRAM CLOCK
1) MT1379 main clock is at 27MHz(X501)
DCLK = 93MHz, Vp-p=2.2, Vmax=2.7V
(IC502,IC503 PIN 35)
FIG 2-1
3. TRAY OPEN/CLOSE SIGNAL
1) Tray open/close waveform
OPEN((PDM03 PIN7)
CLOSE(PDM03 PIN8)
TROPEN(IC402 PIN 1)
TRCLOSE(IC402 PIN 2)
FIG 3-1
3-64
2) Tray close waveform
OPEN((PDM03 PIN7)
CLOSE(PDM03 PIN8)
TROPEN(IC402 PIN 1)
TRCLOSE(IC402 PIN 2)
FIG 3-2
3) Tray open waveform
OPEN(PDM03 PIN7)
CLOSE(PDM03 PIN8)
TROPEN(IC402 PIN 1)
TRCLOSE(IC402 PIN 2)
FIG 3-3
3-65
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)
FMSO(2.0V/1.4V/1.0V)
(IC501 PIN 19)
STBY(5V) – (IC401 PIN 50)
SL+(4.7V/3.6V/1.9V)
(IC402 PIN 12)
SL-(5.3V/3.7V/2.5V)
(IC402 PIN 13)
FIG 4-1
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FOSO(1.5V/1.4V/1.3V)
(IC501 PIN 12)
F+(4.0V/3.6V/3.2V)
(IC402 PIN 9)
F-(4.0V/3.6V/3.2V)
(IC402 PIN 8)
FIG 5-1
3-66
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
MDI1(0V/180mV)
(IC401 PIN 124)
LD01(5.0V//3.5V)
IC401 PIN 125)
LD02(5.0V/3.6V)
(IC401 PIN 126)
FIG 6-1
7. DISC TYPE JUDGEMENT WAVEFORMS
F+(IC402 PIN 9)
FE(IC401 PIN 18)
RFL(IC401 PIN 19)
FIG 7-1 (DVD)
3-67
F+(IC402 PIN 9)
FE(IC401 PIN 18)
RFL(IC401 PIN 19)
FIG 7-2 (DVD)
F+(IC402 PIN 9)
FE(IC401 PIN 18)
RFL(IC401 PIN 19)
FIG 7-3 (CD)
3-68
F+(IC402 PIN 9)
FE(IC401 PIN 18)
RFL(IC401 PIN 19)
FIG 7-4 (CD)
8. FOCUS ON WAVEFORMS
FE(IC401 PIN 18)
FOSO(IC501 PIN12)
F+(IC402 PIN 9)
F-(IC402 PIN 8)
FIG 8-1 (DVD)
3-69
FE(IC401 PIN 18)
FOSO(IC501 PIN12)
F+(IC402 PIN 9)
F-(IC402 PIN 8)
FIG 8-2 (CD)
9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)
DMSO(1.4V/1.8V)
(IC501 PIN 18)
SP-(3.6V/2.4V)
(IC402 PIN 10)
SP+(3.6V/4.8V)
(IC402 PIN 11)
FIG 9-1
3-70
10. TRACKING CONTROL RELATED SIGNAL(System checking)
TE(IC401 PIN 21)
TRSO(IC501 PIN 13)
T-(IC402 PIN 7)
T+(IC402 PIN 6)
FIG 10-1(DVD)
TE(IC401 PIN 21)
TRSO(IC501 PIN 13)
T-(IC402 PIN 7)
T+(IC402 PIN 6)
FIG 10-2(CD)
3-71
11. RF WAVEFORM
RFOP(2.3V/1.1V)
(IC401 PIN 6)
RFON(0.8V/2.0V)
(IC401 PIN 7)
FIG 11-1
12. MT1379 VIDEO OUTPUT WAVEFORMS
1) Full colorbar signal(CVBS)
(IC507 PIN 23)
FIG 12-1
3-72
2) Y
(IC507 PIN 21)
FIG 12-2
3) C
(IC507 PIN 26)
FIG 12-3
3-73
13. AUDIO OUTPUT FROM AUDIO DAC
1) Audio L/R
(IC206 PIN 8,5)
FIG 13-1
2) Audio related Signal
ASDATA3
ASDAT3(IC501 PIN 157)
ABCK(IC501 PIN 148)
ALRCK(IC501 PIN 149)
FIG 13-2
3-74
14. DVD & AMP WAVEFORMS
1)
2)
• R311 → FRONT L
3)
• R303 → FRONT R
4)
• R309 → SURROUND L
5)
• R301 → SURROUND R
6)
• R307 → CENTER
• R305 → WOOFER
3-75
M
LOAD+,LOAD-
3-76
LIMIT
F+,F-,T+,T°‹
RVCC
+P8V
12V
DV33
VCC
V25
3V3M
AV33
+12V
AVCC
DVD_ESET
KEY Input
VCR
DVD_DATA_OUT
RVCC
VCC
PWRCTL
DVD_ENA
DVD_CLK
DVD_DATA_IN
SYS
RC601
REMOCON
RECEIVER
IC505
RESET IC
27MHz
X-TAL
IC501
MT1379EEC
DSP/MPEG
R/Pr G/Y
B/Pb
IC507
MM1623XFBE
VIDEO BUFFER
VCC
DQM[0:1]
5V
5V2A
-27VA
SCLK,SDEN,SDATA
PWMOUT2
MA[00:10]
BA0
DCLK
DCKE
CS#
RAS#
CAS#
WE#
DQ[00:15]
VF-
VF+
IC401
MT1336E
RF
RFON,RFOP,FEO,RFL,CSO
TEO,BDO,RFRP,HTRC,V2P8
AV33/DV33/V25
A[00:19]
PCE#
AD[0:7]
PRD#
PWR#
IC506
IS42S16400A
64M
5Banks
16BIT
SDRAM
SD33
Y[1:6]
POWER
BOARD
ADIN
TROPEN,TRSO,FOSO,DMSO,FMSO
V1P4
STBY,TRCLOSE
APC
DVD:RF0,A,B,C,D
CD:RF0,A,B,C,D,E,F
MDI1
LD01,LD02, IOA, V2.0
TROUT,TRIN
PICK
UP
IC5A1
29LV160TE
2M
16BIT
FLASH ROM
DV33
MA11,BA1
AC 90V~240V
50HZ/60Hz
VCC/+8V
IC402
LA6560
MOTOR
DRIVER
M
SL+,SL-
M
SLED
LOADING
(FEEDING)
MOTOR
MOTOR
SPINDLE
MOTOR
DISC
Y
C
TXD
ASDAT3
ACLK
ABCLK
ALRCK
SDA
SCL
RXD
L/R
IC205
NJM4580
OP-AMP
L/R
+9V
IC206
CS4334(2DAC)
REG_5VA
IC505
KS24C021CS
EEPROM
DV33
DV33
J501
RS232
BLOCK DIAGRAMS
1. Overall Block Diagram
ASPECT
CVBS
SP+,SP-
DECK MECHANISM
TOSHIBA
SD-V55HTSU/SC
M/D
PICK
UP
3-77
LOAD+, LOAD-
SL+, SL-
SP+, SP-
F+, F-, T+, T-
LIMIT,TRIN,TROUT
DVD: A,B,C,D, RFO
CD: A,B,C,D, E, F,RFO
V20
LD0 1, LDO 2, IOA
MDI 1
ALPC
IC402
LA6560
Motor Driver
TRCLOSE
STBY,V1P4
IC401
MT1336E
RF Signal
Processor
FOSO,TRSO,FMSO
DMSO,,TROPEN
ADIN
FEO,TEO,RFL,RFRP
BDO,CSO,HTRC,V2P8
RFOP,RFON
SDEN, SDATA,
SCLK,PWMOUT2
IC501
MT1379EEC
DVDPLAYER
COMBO
CHIP
27MHz
X-TAL
X501
RXD, TXD
SCL, SDA
PRD#, PWR#
PCE#
A[0:19]
AD[0:7]
RS232C(MTK)
EEP
ROM
FLASH
ROM
2. SERVO Block Diagram
TOSHIBA
SD-V55HTSU/SC
RF IC
Interface
FEO,CSO,TEO,ADIN,BDO
SDATA,SDEN,SCLK,URST
FMSO,DMSO
V1P4,V2P8
TROPEN,TRSO,FOSO
3-78
DVD_RESET
DVD_DATA
VCR SYSTEM
MICOM
ENTERFACE
X501
27MHz
IC501 (MPEG + DSP)
MT1379EEC
DVD_ENA
DVD_CLK
DVD_DATA_IN
RFOP,RFON,HTRC,RFRP,RFL
A[0:19]
PWR,PCE,PRD
IC5A1
FLASH MEMORY
(2 M )
AD[0:7]
ASDTA[0:3]
ACLK,ALRCK,ABCK
Y4(Y),Y5(Cb),Y6(Cr)
ASPECT(16:9)
Y2(Y),Y3(Color)
IC505
EEPROM
AUDIO
Interface
VIDEO
Interface
3. MPEG & MEMORY Block Diagram
TOSHIBA
SD-V55HTSU/SC
MPEG
MPEG
3-79
ADATA3
ALRCK
ABCK
ACLK
(Y/C)
(R.G.B) / (Y.Pb.Pr )
IC301
PS9818
AUDIO DAC
IC507
VIDEO 6dB
Amp
IC205 (OP Amp)
LPF&Buffer
SUPER VIDEO (Y/C)
AUDIO ‘R’
AUDIO ‘L ’
COMPONENT (R.G.B) / (Y.Pb.Pr )
CVBS
INTERFACE
4. VIDEO & AUDIO Block Diagram
TOSHIBA
SD-V55HTSU/SC
SPDIF IN : AK4586
Analog L/R : MM1231
WOOFER
CENTER
2,3,8,9/
10,11,
16,17
IC770
STA505
31/32
29/30
31/32
CS493264 PS9706
AK4586 NJM4560M
speaker
DVD L/R
40V 3.5A
DMOS output stage
50+50W :
THD=10%_30V(8ohm)
80W :
THD=10%_36V(8ohm)
2,3/8,9
IC750
STA505
10,11/16,17
FRONT L+-
SURROUND L+-
2,3/8,9
IC730
STA505
SURROUND R+-
FRONT R+-
Speaker jack
10,11/16,17
29/30
31,32/
29.30
32V
REAR R
S/WOOFER
CENTER
REAR L
FRONT L
Digital Audio Processor
3
only AD Mode
IC501
MT1379
92
80
79
181
180
183
184
19
20
36
7
2.5V
I/O control register (8bit) : SPI , I2C
data(16 or 24bit)
60/61 internal system clock : 98.304MHz
external : 12.288MHz (8 PLL)
6CH PCM
PWM
63/64 (24Bit,192kHz)
67/68
70/71
53/54
56/57
ABCK
FRONT R
AMCLK
31/32
ALRCK
2,3/8,9
3.3V
30
31
10
9
7
8
32 43
25
22
60
26
19
42 41 23 52
18 17 16 14
15
4.5~5.5V
34
VFD driver
SIO
8- bit 4 ch AD C
64K/48K-byte ROM
or 128K-byte flash ROM
or 1536/4096-byte RAM
Analog_L
SPDIF
11 4
9 14
S/W IC
IC203
MM1231
Analog_L
Analog_R
7
1231_CTRL
5V
Tuner or radio tuner
33
32
41
43
44
33
Analog_R
8BIT micom
100ns(min bus cycle time)
IC101
LC875700B
Multi CH audio CODEC
ADC 2CH (Dual bit_wide dinamic range)
DAC 6CH (Multy bit ..)
96kHz,24bit DIR
NON-PCM bit stream detect
control : serial interface
dinamic range : ADC_100dB , DAC_106dB
Volume control (AC-3)
IC202
AK4586
505_TH_WAR
505_PDN
12.288MHz
AMCLK
ALRCK
ABCK
ADATA
3
SCL
RESET
SDA
CS
IC710
STA505
CLK
12.288MHz
DI
IC301
PS9818
DO
INT0
INT1
3-80
RST
AMP BLOCK DIAGRAM
max 80W
5. DVD & AMP Block Diagram
TOSHIBA
SD-V55HTSU/SC
ADATA 0, 1, 2
CIRCUIT DIAGRAMS
1. MPEG CIRCUIT DIAGRAM
No Video signal
No Power on
System not working or
screen is abnormal
Video signal Y
Video signal Color
Incomplete Digitron
System not working
3-81
3-82
2. RF & SERVO CIRCUIT DIAGRAM
3-83
3-84
3. AUDIO, µ_COM CIRCUIT DIAGRAM(DVD & AMP)
TUNER_L
TUNER_R
3-85
3-86
4. DIGITAL AMP CIRCUIT DIAGRAM (DVD & AMP)
3-87
3-88
5. PWM & CODEIC CIRCUIT DIAGRAM (DVD & AMP)
3-89
3-90
6. INTERFACE CIRCUIT DIAGRAM (DVD & AMP)
3-91
3-92
• CIRCUIT VOLTAGE CHART
MODE
PIN NO.
STOP
PLAY
IC101
1
5.23
MODE
PIN NO.
STOP
PLAY
MODE
PIN NO.
STOP
PLAY
MODE
PIN NO.
STOP
PLAY
MODE
PIN NO.
STOP
PLAY
MODE
PIN NO.
STOP
PLAY
MODE
PIN NO.
STOP
PLAY
MODE
PIN NO.
STOP
PLAY
MODE
PIN NO.
STOP
PLAY
MODE
PIN NO.
STOP
PLAY
55
2.04
1.96
41
2.44
2.45
51
3.21
318
5
5.11
5.07
61
3.28
0
116
2.06
2.09
5
0
1.51
60
0
0
115
0
0
5.22
56
0
0
42
0
0.01
52
0
0
6
0
1.95
62
0
0
117
0
0
6
1.48
1.47
61
2.59
2.57
116
2.86
3.01
2.54
2
0
0
57
2.36
2.36
43
4.24
4.23
53
1.59
1.58
7
0
0
63
0
0
118
0
0
7
0
1.56
62
2.58
2.58
117
2.86
3
1.75
1.99
58
2.42
2.42
44
4.93
4.93
54
1.59
1.58
8
0
0
64
0
0
119
0
0
8
3.2
1.52
63
0
0
118
0
0
4
0
0
59
4.9
4.91
55
0
0
9
5.11
0
65
0
0
120
5.1
5.05
9
0.12
0.06
64
2.59
2.56
119
0
2.5
5
4.91
4.91
60
2.4
2.4
1
0
0
56
1.59
1.58
10
5.11
5.08
66
0.026
0
121
0.13
0.15
10
0.12
0.06
65
3.29
3.29
120
2.55
2.51
6
NC
NC
61
1.8
1.9
2
0
0
57
1.59
1.58
11
5.11
5.08
67
5.12
5.08
122
0.14
0.15
11
3.25
3.25
66
3.3
3.29
121
3.03
1.4
7
0.54
1.88
62
4.9
4.9
3
3.21
3.18
58
3.21
3.18
12
0
0
68
0
0
123
0
0.18
12
1.41
1.49
67
3.29
3.29
122
3.03
1.4
8
0.54
1.88
63
0
0
4
4.91
4.91
59
0
0
13
5.11
0
69
5.12
0
124
0
0.18
13
1.41
1.41
68
2.57
2.56
123
0.22
1.39
64
5.23
5.22
5
3.21
3.18
60
1.59
1.58
14
5.11
5.08
70
3.21
2.03
125
5.08
5.03
14
0
0
69
5.19
5.18
124
0.22
0.34
6
2.95
2.92
61
1.59
1.58
15
2.84
2.81
71
3.46
2.2
126
5.08
3.16
15
1.42
1.42
70
2.59
2.57
125
0
0
4.93
7
1.72
1.7
62
0
0
16
1.45
1.43
72
2.81
0
127
0.06
2.08
16
3.3
0
71
0.12
0.08
126
3.31
0.98
128
0
0
IC301
9
4.91
4.91
10
0
0
11
4.77
4.77
1
12
0.12
0.12
2
0
0
8
0
0
63
1.59
1.58
17
2.08
2.07
73
0
0
13
4.72
4.72
3
4.93
4.93
9
0
0
64
1.59
1.59
18
1.37
1.42
74
0.21
0.09
14
0
0
IC202(AK4586)
10
0
0
65
3.21
3.18
19
0.69
2.3
75
0.22
15
0
0
1
2.41
2.39
11
0
0
66
0
0
20
2.4
0
76
16
0
0
2
2.04
2.07
12
0
0
67
1.59
1.58
21
2.35
0
17
0
0
3
4.85
4.84
13
0
0
68
1.59
1.58
22
5.11
18
0
0
4
0
0.01
14
0
0
69
0
0
23
19
0
0
5
3.28
3.28
15
3.21
3.18
70
1.59
1.58
20
0
0
6
4.85
0.01
16
0
0
71
1.59
21
0
0
7
1.18
1.15
17
0
0.9
72
3.21
22
3.24
3.22
8
1.65
1.65
18
0
0
73
23
0.91
0.91
9
1.63
1.62
19
0
0
74
24
1.65
1.65
10
1.3
1.25
20
0
0
25
0
0
11
0
1.63
21
0
26
0
0
12
0
1.63
22
27
1.99
1.93
13
0
0.58
28
3.12
3.12
14
0
29
3.26
3.25
15
30
3.12
3.12
31
4.65
32
33
IC102
4.93
17
2.53
2.53
72
2.53
2.52
127
0.26
1.64
IC402 (LA6560)
18
1.42
2.27
73
2.59
2.57
128
3.31
1.53
0
1
0
0
19
1.42
1.39
74
3.29
3.29
129
3.3
1.15
0
0.1
2
0
0
20
0
0
75
2.61
2.61
130
3.3
3.29
77
0.21
0.09
3
8.04
8.01
21
2.61
2.58
76
3.27
3.24
131
3.31
1.49
5.08
78
0.23
0.09
4
0.12
0.06
22
0.75
1.46
77
0
0
132
0.16
0.89
0
0
79
0.21
0.08
5
0
0.06
23
2.83
1
78
0.94
1.04
133
3.3
0
24
2.59
3.2
80
0.23
0.08
6
3.64
3.69
24
1.9
0.89
79
0.78
1.06
134
3.3
1.07
1.58
25
0.19
1.88
81
0.22
0
7
3.62
3.61
25
1.72
0.39
80
0.89
1.15
135
0
0
3.18
26
1.58
0
82
0
0
8
3.64
3.53
26
0.68
0.31
81
0.99
1.34
136
2.86
2.53
0
0
27
2.56
3.13
83
0
0
9
3.6
3.76
27
2.84
3.16
82
2.52
2.52
137
2.86
2.53
0
0
28
2
2.01
84
0.07
0
10
3.62
2.43
28
0
0
83
3.09
1.33
138
0.07
0.86
75
0
0
29
2
2.06
85
0.07
2.27
11
3.63
4.85
29
2.85
0.66
84
0.37
1.16
139
0.09
0.99
0.9
76
3.1
3.09
30
2.96
1.52
86
1.97
0
12
3.62
3.72
30
1.83
0.49
85
3.08
1.1
140
0.07
2.51
1.59
1.6
77
3.21
3.18
31
0
0
87
1.96
1.9
13
3.64
3.57
31
0.91
1.39
86
3.07
1.08
141
0.07
0.94
23
1.63
1.62
78
0
0
32
0.06
2.07
88
1.54
1.71
14
8.04
8.01
32
1.43
1.2
87
0.59
1.04
142
0.09
1.13
0.03
24
3.22
3.18
79
3.22
3.2
33
0.07
2.07
89
0.19
2.22
15
1.45
1.48
33
1.51
1.57
88
1.57
2.53
143
0.07
1.19
0
0.03
25
0
0
80
0
0
34
0
0
90
0.21
0
16
0.27
1.39
34
1.51
1.43
89
3.2
3.13
144
0.09
1.07
16
0.45
0.2
26
0
0.9
81
3.21
3.18
35
0
0
91
0.22
0.06
17
0.29
1.32
35
3.3
3.29
90
2.77
2.53
145
0.09
0
4.65
17
0
0.01
27
0
0
82
3.21
3.18
36
0
0
92
0.22
0
18
1.45
1.43
36
0.81
1.26
91
0.22
1.68
146
0
1.51
NC
NC
18
0
0.02
28
0
0
83
0
0
37
5.13
0
93
0.23
0.06
19
1.45
1.43
37
1.45
1.02
92
0
0
147
0.09
1.25
NC
NC
19
4.93
4.92
29
0
0
84
3.21
3.18
38
0
0
94
0.23
0.06
20
1.45
0.82
38
1.82
1.6
93
3.32
1
148
0.07
1.64
34
NC
NC
20
0
0.02
30
NC
NC
85
0
0
39
0
0
95
2.28
0
21
1.45
1.43
39
1.2
1.5
94
0.16
1.58
149
0.06
0
35
0
0
21
0
0.01
31
NC
NC
86
1.67
1.67
40
0
0
96
2.28
2.25
22
1.45
1.43
40
2
2.06
95
3.31
1.62
150
0
1.65
36
4.91
4.91
22
4.94
4.93
32
3.21
3.18
87
NC
NC
41
0
0
97
2.27
1.23
23
1.47
1.37
41
2.17
1.95
96
3.3
1.08
151
0.07
3.29
37
3.25
3.24
23
4.93
4.93
33
0
0
88
NC
NC
42
5.12
5.09
98
2.27
2.23
24
1.45
1.43
42
2.53
2.52
97
3.3
3.29
152
0
1.6
38
4.91
4.91
24
2.46
2.46
34
NC
NC
89
0
0
43
5.12
5.09
99
2.27
2.23
25
1.45
1.43
43
1.96
1.9
98
3.32
1.62
153
0
1.64
39
0
0
25
0
0.02
35
NC
NC
90
3.21
3.18
44
5.12
5.09
100
2.16
2.23
26
0.95
0.9
44
1.79
1.9
99
0.16
1.09
154
0
1.44
40
3.22
3.2
26
2.47
2.47
36
NC
NC
91
0
0
45
5.12
5.09
101
2.08
2.17
27
0
0
45
0.8
1.72
100
3.32
1.27
155
0
0
41
NC
NC
27
2.47
2.47
37
0
0
92
3.25
3.24
46
5.12
5.09
102
2.07
2.17
28
1.45
1.43
46
0.8
1.96
101
3.3
1.32
156
0
0
42
NC
NC
28
2.47
2.47
38
1.6
1.59
93
0
0
47
0
0
103
2.07
2.18
29
5.15
5.11
47
0.8
1.84
102
0
0
157
0
1.63
43
NC
NC
29
2.47
2.47
39
NC
NC
94
0
0
48
5.12
5.09
104
2.08
0
30
1.45
1.43
48
3.3
2.63
103
1.56
1.55
158
0
3.29
44
NC
NC
30
2.47
2.47
40
3.21
3.18
95
0
0
49
5.12
0
105
0.13
0.15
31
1.45
1.43
49
0
0.13
104
0.94
1.25
159
0
3.27
45
NC
NC
31
2.47
2.47
41
0
0
96
0
0
50
5.08
5.06
106
0.14
0.16
32
1.45
1.43
50
0
0.07
105
0.41
0
160
0
1.27
46
4.91
4.9
32
2.47
2.46
42
NC
NC
97
NC
NC
51
5.09
5.07
107
0
0
33
1.46
1.45
51
0
0
106
0.05
0.06
161
0
1.27
47
2.08
2.03
33
2.47
2.46
43
0
0
98
0
0
52
5.1
0
108
1.28
1.28
34
5.08
5.06
52
0
0
107
0
0.06
162
0
2.35
48
2.07
2.07
34
4.93
4.92
44
NC
NC
99
3.21
3.18
53
0
0
109
5.18
5.05
35
5.15
5.11
53
0
0
108
3.27
3.26
163
0
0
49
4.91
4.9
35
1.2
1.2
45
NC
NC
100
0
0
54
5.13
0
110
0.14
0.16
36
0
0
54
0
0
109
0
0
164
0
0.73
IC401(MT1336E)
50
NC
NC
36
0
0.01
46
3.21
3.18
56
1.61
0
111
0.15
0.15
IC402 (LA6560)
55
3.25
3.27
110
0.19
1.74
165
0
3.27
51
5.09
5.08
37
2.44
2.45
47
0
0
1
1.03
2.99
57
0
0
112
0.13
0.16
1
1.22
1.22
56
1.2
1.18
111
3.3
3.29
166
0
0.5
52
0
0
38
0
0.01
48
NC
NC
2
5.11
5.08
58
0
0
113
0.14
0.15
2
0
0
57
0
0
112
0.18
1.62
167
0
0
53
4.91
4.91
39
2.44
2.45
49
NC
NC
3
0
0
59
0
0
114
5.1
5.05
3
0.96
0.9
58
3.29
3.29
113
2.98
2.38
168
0
0.53
54
2.16
2.1
40
0
0.02
50
0
0
4
0
0
60
0
0
115
2.07
2.06
4
2
2.06
59
0
0
114
3.02
1.48
169
0
3.27
3-93
3-94
MODE
PIN NO.
STOP
MODE
PIN NO.
STOP
MODE
PIN NO.
STOP
170
0
0.59
3.29
4
2.83
3.12
10
15.61
171
0
0
IC507(MM1623)
5
0.69
0.26
11
172
3.01
173
0
0.72
1
5.09
5.08
0.72
2
2.43
2.42
6
1.72
0.25
7
1.92
0.9
174
0
0
3
5.09
5.08
8
1.7
175
0
2.73
4
1.45
0
9
176
0
3.13
5
0
0
177
0
3.13
6
1.45
178
179
0
3.25
7
0
0
8
PLAY
MODE
PIN NO.
STOP
MODE
PIN NO.
STOP
8
3.28
15.61
28
3.24
3.23
15.61
15.61
29
1.58
1.57
12
31.59
31.59
30
1.58
1.57
13
0
0
31
1.58
1.57
1.45
14
0
0
32
1.58
1.57
0
0
15
31.59
31.59
33
26.3
26.3
10
0
0
16
15.61
15.61
34
26.3
26.3
1.69
11
3.27
3.29
17
15.61
15.61
35
31.58
31.57
0
0
12
3.56
3.55
18
NC
NC
36
31.58
31.57
2.47
2.46
13
3.29
3.29
19
0
0
PLAY
PLAY
PLAY
PLAY
0
0
9
0
0
14
0
0
20
0.02
0.02
1
0
0
181
2.04
2.64
10
1.14
1.76
15
0.23
0.06
21
5.02
5.02
2
15.6
15.6
182
0
2.52
11
0
0
16
0
0
22
5.02
5.02
3
15.6
15.6
183
0
0
12
2.42
2.42
17
0
0
23
3.25
3.24
4
31.59
31.58
184
0
0.09
13
5.09
5.08
18
0
0.87
24
0
0
5
0
0
185
0
3.26
14
2.43
2.42
19
1.98
2.64
25
3.15
3.15
6
0
0
186
_
_
15
0
0
20
2.28
2.18
26
3.15
3.15
7
31.59
31.58
187
0
0.08
16
2.49
2.47
21
2.13
1.96
27
3.15
3.15
8
15.62
15.62
188
0
0
17
0
0
22
1.67
2.01
28
3.24
3.23
9
15.62
15.62
189
0
0
18
2.48
2.47
23
1.99
1.72
29
1.58
1.57
10
15.61
15.61
190
0
0
19
0
0
24
1.93
2.19
30
1.58
1.57
11
15.61
15.61
191
0.23
0
20
1.18
2.3
25
2.05
1.94
31
1.58
1.57
12
31.59
31.59
192
0
3.29
21
1.76
2.17
26
0
0
32
1.58
1.57
13
0
0
193
0
0
22
0
0
27
0
0
33
26.32
26.31
14
0
0
194
0
0
23
1.76
2.24
28
0
0
34
26.32
26.31
15
31.59
31.59
195
0
0
24
0
0
29
1.49
2.03
35
31.58
31.57
16
15.61
15.61
196
0
0
25
0
0
30
0.16
1.07
36
31.58
31.57
17
15.61
15.61
197
0
1.63
26
0
0
31
1.96
1.25
18
NC
NC
198
0
0
27
0.06
0.05
32
0.16
1.1
1
0
0
19
0
0
199
0
0
28
5.09
0
33
0.99
2.2
2
15.6
15.6
20
0.03
0.03
200
0
2.15
IC510(BUFFER)
34
1.17
1.07
3
15.6
15.6
21
5.06
5.06
201
0
1.44
1
0
0
35
0.79
1.82
4
31.59
31.58
22
5.06
5.06
202
0
1.44
2
2.59
2.55
36
0.15
1.07
5
0
0
23
3.24
3.23
203
0
1.43
3
0
0
37
3.29
3.3
6
0
0
24
0
0
204
0
1.43
4
2.59
2.56
38
1.93
3.09
7
31.59
31.58
25
3.15
3.15
205
0
1.42
5
0
0
39
0.16
1.07
8
15.62
15.62
26
3.15
3.15
206
0
2.1
6
3.24
3.23
40
1.5
2.2
9
15.62
15.62
27
3.15
3.15
207
0
2.07
7
0
0
41
0.16
1.07
10
15.61
15.61
28
3.24
3.23
208
0
1.41
8
0.14
0.08
42
1.21
2.64
11
15.61
15.61
29
1.58
1.57
209
0
1.52
9
0
0
43
0.16
1.08
12
31.59
31.59
30
1.58
1.57
210
0
1.43
10
0
0
44
1.64
1.48
13
0
0
31
1.58
1.57
211
0
2.81
11
0.15
0.09
45
2.05
2.06
14
0
0
32
1.58
1.57
212
0
3.28
12
0
0
46
0
0
15
31.59
31.59
33
26.3
26.3
213
0
0.12
13
0.15
0.08
47
0
0
16
15.61
15.61
34
26.3
26.3
214
0
0.12
14
5.19
5.19
48
0.07
0.13
17
15.61
15.61
35
31.58
31.57
215
1.02
1.43
15
0.14
0.09
18
NC
NC
36
31.58
31.57
216
0
1.43
16
5.25
5.24
1
0
0
19
0
0
IC505(EEPROM)
IC710
17
0.15
0.08
2
15.6
15.6
20
0.02
0.02
1
0
0
18
5.23
5.23
3
15.6
15.6
21
5.02
5.02
2
0
0
19
0
0
4
3.59
31.58
22
5.02
5.02
3
0
0
20
5.25
5.25
5
0
0
23
3.24
3.23
4
0
0
IC5A1(FLASH)
6
0
0
24
0
0
5
3.28
3.29
1
0.08
0.16
7
31.59
31.58
25
3.15
3.15
6
3.28
3.29
2
1.82
0.45
8
15.62
15.62
26
3.15
3.15
7
0
0
3
2.84
0
9
15.62
15.62
27
3.15
3.15
NO
DVD&AMP Q401
Q402
Q403
Q404
Q405
Q407
Q408
Q410
Q411
STOP
3-95
PLAY
B
E
C
B
E
C
5.2
0
5.08
5.01
5.01
0
2.85
5.2
0
5.19
0
0
5.08
5.08
0
0
5.2
0
0
0
0
0
0.44
5.2
0
0
5.2
5.2
0
4.93
4.96
3.32
0
2.83
0
0
5.19
0
0
5.02
4.01
0
0
5.2
0
0
0.22
0
0
1.9
0
0
0
5.19
IC750
180
IC730
SECTION
3-96
PRINTED CIRCUIT DIAGRAMS
1. DVD & AMP P.C.BOARD
LOCATION GUIDE
LOCATION GUIDE
3-97
3-98
TOSHIBA CORPORATION
1-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO 105-8001, JAPAN