TOSHIBA SD-K530SU Service Manual

Page 1
SERVICE MANUAL
DOCUMENT CREATED IN JAPAN, Mar., 2004
FILE NO. 810-200409
DVD VIDEO
PLAYER &
VIDEO CASSETTE RECORDER
SD-K530SU
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3-20 3-21
BLOCK DIAGRAMS
1. POWER(SMPS) BLOCK DIAGRAM
BD101
T101
TRANS
R101
+
BR BL
(BK)(WH)
C103
!
!
!
!
!
!
FUSE
(F101)
NOISE FILTER
BLOCK
(C101,L102,
C102)
PHOTO COUPLER
(IC102)
ERROR
AMP
(IC103)
SNUBBER
BLOCK (D101,C105 C106,R104)
DRIVE & S/W BLOCK
(IC101, D102, R105,
C104, C109 , C135)
Y-CAP
C111
Y-CAP
C110
FEED-BACK
BLOCK R112,R113, C133,R114.
R115,R116
R117)
RECTIFIER &
SMOOTING BLOCK
(D110,C123,C163,
R133,L122,C126)
RECTIFIER &
SMOOTING BLOCK
(D118,D112,C129,
C131,L124,L125)
RECTIFIER &
SMOOTING BLOCK
(D111,C127,L123,
C128)
RECTIFIER &
SMOOTING BLOCK
(D113,C132,R119)
CAP VCC
D115
D117
DRUM VCC
12V
8V
5.3VA
5V
3.3V
33V
12V REG BLOCK
(Q156,ZD103,C151,
R150,R153,C152)
8V REG BLOCK
(D114,IC151,R170,
C154,C159)
5V S/W BLOCK
(Q160,C155,D121,
R157,R158,R159,R160)
3.3V REG BLOCK
(IC152,C153,R156)
33V S/W BLOCK
(Q161,R154,R155,
R177)
5V S/W BLOCK
(Q163,C162,R173,
Q164)
PWR CTL'H'
SW5V
9V
9V REG BLOCK
(Q165,ZD171,C171,
R174,R175,R176)
PWR CTL BLOCK
(Q162,C161,R164,
R163)
657 8
2
31
COMBI NTSC
Page 76
3-22 3-23
2. TU/IF BLOCK DIAGRAM
A.IN
CH S/W
REG 5V
CONTROL
V.IN
RF AGC
NC
ENABLE
CLOCK
DATA
AFT
A.OUT
SIF
TU 30V
NC
V.OUT
999 GND
100AFT
732TU.V.OUT
875 MOD A.IN
61 MOD CTL
107 5V
26 VCR 'H'
971 MOD VEDIO
71 IIC CLK
72 IIC DATA
781 SIF OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
COMBI NTSC
15833V
Page 77
3-24 3-25
3. Y/C BLOCK DIAGRAM
+
+
28
51
49
53
98
73 6574
80
85
86
87
899190
83
IC301
HA118725
76 77
10
67 69
29
30
3640383733 34
31
32
57 45 43 42 46
55
EP CH1
EP CH2
V. OUT
(TO u-COM)
D-V SYNC
(FROM u-COM)
System
System
Y-CCD
C-CCD
CLOCK Drive
LPF
REC-AMP
SP CH2
REC-AMP
SP CH1
REC-AMP
EP CH2
REC-AMP
EP CH1
DATA
(FROM u-COM)
System
CLOCK
(FROM u-COM)
System
V.H/SW30
(FROM u-COM)
V.ENV
(TO u-COM)
System
SP CH1
SP CH2
Serial Cont
interface
X-tal
VCO/OSC
TRAP
629K
FM AGC P.EQ G.EQ D LIM Y LPF
Main
De-Empf
DEMO
S LPF
2M LPF
ACC
CTL Trap
fh Trap
HIFI Trap
C LPF DEALY
MIX
AMP
6dB
AMP
C-
SQUELCH
SQUEL CH
CLEAR
SYNC
CLAMP
CLAMP
Sharpness
CONTROL
YNR NC
SYNC SEP
C-SYNC
(TO u-COM)
System
NL
De-eMPH
VCA
C.K
LPF
BDBPF
CCD LPF
APC/ACC
DET
L- DET
Main
Conv2
Main
Conv1
FBC
Video ALC
(PB Mode)
+
+
++++
28
29
51
49
53
55
46
19
15 17 18 36 40 38 37 23 26 31 14 9 8 11
LINE 2 VIDEO IN
LINE 1 VIDEO IN
TV VIDEO IN
57
45 7365 74 6967
80
85
86
87
+
12
DVD VIDEO IN
89
91
90
ATT
-10dB VIDEO
AGC
CLEAR
SYNC
V. OUT
(TO u-COM)
D-V SYNC
(TO u-COM)
System
System
System
Y-CCD
C-CCD
CLOCK Drive
6dB
AMP
FBC
Video ALC
SQUEL CH
ATT
-10dB
C-SYNC
(TO u-COM)
ATT
-10dB
LPF
AGC DET
CLAMP
YNR
CLAMP
SYNC
SEP
D.E.
C-LPF 2
SPFACC
HPF
C-LPF 1
NL Emph
REC FILTER
LPF
VCA
629K
TRAP
FBC
ALC
Main
Conv2
Main
Conv2
APC/ACC
DET
Main
Emph
FM
MOD
REC
Trap
REC-AMP
SP CH2
REC-AMP
SP CH1
REC-AMP
EP CH2
REC-AMP
EP CH1
MIX
ATT
B.E
C.K
CCD
LPF
L-DET
JCA
(-4dB)
f0=1.68M
f/0DEV
Adjst
X-tal
VCO/OSC
Serial Cont
interface
DATA
(FROM u-COM)
System
CLOCK
(FROM u-COM)
System
V.H/SW30
(FROM u-COM)
System
SP CH1
SP CH2
EP CH1
EP CH2
IC301
HA118725
32
30
COMBI NTSC
(REC Mode)
Page 78
3-26 3-27
4. NORMAL AUDIO BLOCK DIAGRAM
IC301
HA118725NF
SIF
A_IN
RF_MOD
IC801
LA72670BM
TUNER
TU701
10
76
DET
NORMAL
AUDIO
OUT
LINE AUDIO(R) IN
LINE AUDIO(L) IN
REAR JACK
REAR Jack
A. OUT (L)
ALC
SIF
DE MOD
INPUT
SELECT
OUTPUT
SELECT
4
6
13
1
57
9
2
71
117312
74
80
78
A. OUT (R)
DVD AUDIO
(System)
IC801
LA72670BM
IC301
HA118725NF
AMP
EQ
AMP
78
410
A. OUT (R)
MOD. OUT
DATA
CLOCK
R/P HEAD
N.A.IN
53
ENA
55 54
5
4
6
From u-COM
80
A. OUT (L)
2
OUTPUT
SELECTOR
EQ
3
2
SIF
DE MOD
INPUT
SELECT
OUTPUT
SELECT
IC301
LA71206M
SIF
IC801
LA72670BM
TUNER
TU701
10
76
DET
NORMAL
AUDIO
OUT
LINE AUDIO(R) IN
LINE AUDIO(L) IN
REAR Jack
A. OUT (L)
REC
AMP
4
6
13 57
RF MOD.
A_IN
1 2
9
71
80
78
A. OUT (R)
COMBI NTSC
ALC
9
(EE Mode) (PB Mode) (REC Mode)
Page 79
3-28 3-29
5. Hi-Fi BLOCK DIAGRAM
A
B
Hi-Fi/
REC
IC801 LA72670BM
A.OUT
To JACK
MODULATOR
A.OUT (To Tu)
24
Hi-Fi PB 'B'
Hi-Fi PB 'A'
Hi-Fi REC
57
12
74
11
73
9
71
6 4
26 27
80
A.OUT 'L'
A.OUT 'R'
78
3
AUDIO INPUT
BLOCK
NORMAL AUDIO
OUT(To AVCP)
NORMAL AUDIO
IN(From AVCP)
SIF
DVD A.IN 'L'
DVD AUDIO
DVD A.IN 'R'
AV1 A.IN 'L'
AV1 A.IN 'R'
AV2 A.IN 'L'
AV2 A.IN 'R'
COMBI NTSC
REAR JACK
FRONT
FM MODU
DE MODU
DEMO
DULATE
INPUT
SELECT
OUTPUT
SELECT
Page 80
3-30 3-31
6. SYSTEM BLOCK DIAGRAM
GND
MODE S1 MODE S2 MODE S3 MODE S4
MODE S/W
TO/FROM AVCP
T-UP REEL
T-UP END
SUP REEL
CST.SW/REC TAP
5V
CS501
5.3VA
5.3VA
ES501
R550
LD501 DECK IR LED
R553
R555
RS501
RS502
R556
R558 C582
R538
R535
R537
R536
C534
R544
C552
R5C6
C500 C517
R541
R529
R583
L512
MS501
X502
14MHz
32.768KHz
OSC
OSC
X501
1
2
RESET
GND
Vcc
3
5.3VA
5V
IC504
+
+ +
C592
+
C503
L501
R557
SUP END
ES502
C535
R564
R531
OSC
R/C
RC601
L511 R598 C595  C596
+
C561
TO/FROM DECK
Q503
Q501
CV IN
25
24
23
22
21
79
58
80
88
49
40
37
98
34
IC501
M37760
MODE S1
I-Limit
MODE S2
MODE S3
MODE S4
T-UP Sensor
T-UP Reel
SUP Reel
CST IN
Vss (AMP)
Vss (OSD)
Vss (SYSCON)
Vcc
(SYSCON)
Vcc
(SERVO)
CAP. PWM
CTL +
CTL -
CFG
CAP. REV 'H'
LD CTL
V. ENV
V.H.SW30
DPG
D.V.Sync
38
39
X out
Xc in Xc out
X in
35
36
44
OSC in 2
95
94
87
12
60
9
18
76
90
13
H.A.SW
SQPB
16
59
56
77
11
DRUM PWM
53
Vcc (OSD)
20
SUP Sensor
45
OSC out 2
14
99
Vcc (A/D)
TO/FROM AUDIO(Hi-Fi)
TO/FROM DVD
TO/ FROM TU/IF
72
100
26 61
VCR 'H'
MODU CTL
PLL DATA
PLL CLK
CV OUT
AFT
71
52
POWER FAIL
78
A. MUTE 'H'
A. ENV
A. H.SW
REC 'H'
74
68
71 72
CLK
DATA
74
50
COMP IN
17
REC 'H'
15
C.ROT
84
A.MUTE'H'
S clk
S in
S out
DVD DATA OUT
DVD DATA IN
DVD CLK
DVD RESET
DVD ENA
8
19
67 66 65
65 66 67 82 85
Hi-Fi ONLY
2
GND
Vcc
3
IC505
1
IC5F1
OSC
DISPLAY
COMBI NTSC
Page 81
3-32 3-33
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.
SR14370A
(DVW-7000 Without)
(DVW-7000 Without)
CIRCUIT DIAGRAMS
1. POWER(SMPS) CIRCUIT DIAGRAM 1
Switching Error. IC101 is defective.
Switching Error. IC103, 102 are defective.
2.5V, 3.3V no power. D111 is defective.
No Power. F101 is defective.
5.3VA no power. D112 is defective.
33V no power. D113 is defective.
No power. BD101, R101 are defective.
12VA no power. D110 is defective.
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-
NAL 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 UNTILTHE 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.
Page 82
3-34 3-35
2. POWER(SMPS) CIRCUIT DIAGRAM 2
Page 83
3-36 3-37
3. TU/IF CIRCUIT DIAGRAM
PB
REC
Page 84
3-38 3-39
4. A/V CIRCUIT DIAGRAM
1
2
4
7
3
6
3
3
9
12
13
8
5
9
10
11
WAVEFORM
Y. (REC) C. (REC) Y(PB)
Y/PB
C/PB
Y+C (PB)
C(PB)
Y+C (REC)
R333, C350, C349 are defective.
No Color.
H/SW Level is defective.
Video Noise.
L307,C349 are defective.
No Color.
C323 is defective.
Video output level unstable
R322, R323, R324, C320 are defective.
VIDEO Distortion
Page 85
3-40 3-41
5. Hi-Fi CIRCUIT DIAGRAM
PB
REC
23 Pin is defective. Hi-Fi Audio is not appear.
IC801 Pins37, 38 aredefective.
All Audio is not appear.
Page 86
3-42 3-43
6. JACK CIRCUIT DIAGRAM
Page 87
3-44 3-45
7. SYSTEM CIRCUIT DIAGRAM
1
3
48 5 6
7
2
WAVEFORM
3854R14302B
Q501, Q503 are defective.
µ-COM is unstable.
IC505 is defective.
VCR will not operate.
X501 is defective.
CLOCK SETTING will not operate.
X502 is defective.
µ-COM will not operate.
ES501, ES502, LD501 are defective.
Auto Rew will not working.
RS501,RS502 are defective.
Auto stop occures.
R575, R576, R577, R578 are defective.
Deck will not operate.
Page 88
3-46 3-47
8. TIMER CIRCUIT DIAGRAM
Page 89
3-48 3-49
* IC501 Waveform
Tek Stop : 10.0KS/s
280 Acqs
M5.00ms Ch1Ch1 3.04 V1.00 V
T
T
1
Tek Stop : 250KS/s
299 Acqs
M 200µs Ch1Ch1 3.04 V1.00 V
T
T
1
Tek Stop : 10.0KS/s
18 Acqs
M 5.00ms
Ch1
Ch1
3.04 V
Trigger Position: 12%
1.00 V
T
1
T
Tek Stop : 10.0KS/s
27 Acqs
M5.00ms Ch1Ch1 3.04 V1.00 V
T
T
1
Tek Stop : 10.0KS/s
35 Acqs
M5.00ms Ch1
Ch1
3.04 V1.00 V
T
T
1
Tek Stop : 50.0KS/s
120 Acqs
M1.00ms Ch1Ch1 3.04 V1.00 V
T
T
1
T
Tek Stop : 5.00KS/s
2 Acqs
M 10.00ms
Ch1
Ch1
340V
Trigger Level: 340mv
500mV
T
1
IC501 Pin 18 REC/PB
IC501 Pin 13 QUE/REV
IC501 Pin 13 QUE/REV
IC501 Pin 95 REC
IC501 Pin 87 REC/PB
IC501 Pin 90 REC/PB (DPG/DFG)
(DPG)
(DFG)
IC501 Pin 97 PB (CTL OUT)
IC501 Pin 94 REC
• WAVEFORMS
* IC301 Waveform
IC301 Pin 9 100mV/10msec DIV VV/EE (Main De-Emphasis out)
IC301 Pin 12 100mV/10msec DIV PB (Main De-Emphais
Peacking)
IC301 Pins 33, 36, 37 100mV/10msec DIV VV/EE Clamp Drive IN Pin 33 Y-out(to 1H CCD) Pin 36 Y-out(from 1H CCD) Pin 37
IC301 Pin 15 200mV/10msec DIV EE (VIDEO IN)
IC301 53 Pin 100mV/0.2msec DIV REC/PB (2fsc)
IC301 31 Pin
1.0V/20msec DIV VV/EE (C-SYNC OUT)
IC301 29 Pin 500mV/10msecDIV VV/EE (VIDEO OUT)
IC301 Pin 43 200mV/20msec DIV PB (C.OUT)
IC301 Pins 46, 57 200mV/20msec DIV VV/EE from 1H CCD Pin 46 to 1H CCD Pin 57
IC301 Pin 67 100mV/0.2msec DIV PB/REC (3.58MHz X-TAL IN)
IC301 Pin 77 100mV/5msec DIV PB (PB RF out)
IC301 Pin 86 500mV/2msec DIV SP REC (REC RF)
IC301 Pin 90 500mV/2msec DIV EP REC (REC RF)
Page 90
3-50 3-51
• CIRCUIT VOLTAGE CHART
EE PLAY
MODE
PIN NO.
0.06
0.06
0.02
5.10
2.10
0.00
2.84
1.85
1.85
2.39
2.64
1.69
0.01
2.78
0.01
0.31
2.80
1.95
2.80
0.02
2.80
5.10
2.32
0.52
2.13
3.01
0.51
0.03
2.47
2.79
0.37
2.39
2.10
1.83
3.05
2.31
3.04
0.00
2.49
2.09
2.49
2.13
2.13
0.01
3.12
3.12
5.05
4.92
3.28
5.05
2.03
5.05
2.61
0.01
0.00
0.06
0.01
5.15
2.61
2.54
2.84
1.35
1.34
1.90
3.04
0.01
0.01
2.40
0.01
1.92
2.80
1.89
2.80
0.01
2.80
5.14
2.34
0.88
2.13
2.81
0.92
0.03
2.38
2.89
0.23
2.82
2.15
3.14
2.54
2.39
3.13
2.18
1.45
2.12
2.66
2.14
2.14
0.01
3.15
0.00
0.00
4.97
3.33
5.10
2.11
5.10
2.63
0.01
EE PLAY
MODE
PIN NO.
1.99
0.01
2.18
2.30
4.95
4.95
0.03
1.19
2.35
2.61
2.26
2.61
1.39
1.28
1.98
2.30
1.60
2.50
5.25
5.25
5.25
2.17
2.17
2.84
0.03
0.01
0.01
0.01
2.50
5.05
2.29
2.29
2.47
0.01
5.02
0.03
0.03
5.06
2.05
2.55
2.53
2.53
0.02
2.27
0.01
2.57
0.97
5.17
5.17
0
0.5
0
0.4
0.19
2.02
0.01
2.18
1.91
4.99
5.00
0.03
1.19
2.35
2.61
2.26
2.61
1.39
1.28
1.98
2.30
1.60
2.50
5.25
5.25
5.25
5.25
2.17
2.17
0.03
0.01
0.01
0.01
2.50
5.05
2.29
2.29
2.29
0.01
2.28
2.28
2.28
5.11
2.54
2.54
2.52
2.50
0.01
2.55
0.01
2.54
0
5.17
5.16
0
0.54
0
0.42
4.06
IC501
EE PLAY
MODE
PIN NO.
0.29
0.68
0
0
0
4.78
0
0
0.68
2.56
2.57
0
0.11
5.17
]5.17
5.17
0
5.13
5.13
5.13
0
0
0
0
0
5.15
1.52
1.43
5.15
2.19
2.28
0
0.51
0.26
0.26
2.35
2.41
0
1.29
0
0
1.88
0.53
1.88
4.96
2.03
2.6
1.96
0
0
0
2.57
0
0
0
3.91
0.99
3.42
0
0
4.78
2.57
0
0.43
2.57
2.57
0
0.11
5.17
5.17
5.17
0
5.13
5.17
5.13
0
0
0
0
0
5.15
1.51
1.44
5.15
2.18
2.27
0
0.55
0.55
0
2.34
2.41
0
0
0
0
1.99
0.57
1.98
4.95
2.03
1.92
2.05
0
0
0
2.58
4.28
0
0
EE PLAY
MODE
PIN NO.
0
0.97
2.38
5.07
4.7
5.02
4.75
5.17
5.17
0
0
0
0
0
0
0
0
0
4.94
5.03
0
2.69
0.58
0.17
0
0.54
0.1
2.53
2.54
0.21
2.5
2.5
2.52
2.52
5.08
5.17
2.64
5.19
0
5.14
5.19
0
4.7
0
2.56
9.21
2.48
5.19
1.91
0
0.29
0
0
0.86
0
5.07
4.45
4.97
4.61
5.17
5.17
0
0
0
1.79
2.72
4.76
0
0
0
4.94
4.98
0
2.67
0.68
2.36
0
0
1.36
2.54
2.53
0
2.49
2.49
2.52
2.52
5.08
5.17
1.95
5.19
0
5.14
5.19
0
4.7
0
2.54
9.18
2.48
5.19
2.07
0
1.31
0
IC504
IC505
IC801
EE PLAY
MODE
PIN NO.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
0
0
2.5
1.91
2.49
5.06
2.51
0
0
2.51
2.52
2.52
2.51
0.19
2.25
0
2.24
2.25
0
2.48
0
2.51
5.02
2.64
2.64
0
5.06
5.17
5.17
0
0.19
2.52
2.51
2.52
2.52
0
5.06
2.49
1.9
0
0
2.05
1.22
3.86
9.2
6.26
1.96
2.2
4.56
2.52
3.86
3.15
4.02
3.83
2.45
0
0
2.5
2.44
2.49
5.05
2.51
0
0.86
2.44
2.45
2.43
2.42
3.66
2.3
0
2.3
2.3
0
0.11
1.34
3.79
5.01
2.65
2.64
0
5.05
5.05
5.17
2.57
0
2.45
2.43
2.45
2.45
0.25
5.05
2.49
2.42
0
0
2.06
0
0.25
9.19
0.28
0.29
2.15
0
2.35
0.23
0.24
0
0
0
EE PLAY
MODE
PIN NO.
3.87
4.09
3.88
3.94
0
0
0
3.86
0
2.5
3.87
3.17
0
4.42
0
4.4
0.32
0.32
0.31
0.31
0
0
0
0.31
0
2.5
0.4
0.22
0
4.3
0
4.3
IC301
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
1
2
3
1
2
3
1
2
3
4
5
6
7
8
9
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
EE PB EE PB
Base Emitter Collector
PB EE
Location
No.
Q301
Q302
Q303
Q304
Q305
Q306
Q307
Q309
Q501
Q503
Q504
Q505
Q506
Q507
Q805
Q701
Q702
0.25
4.4
0.01
4.7
-28
-28
4.7
0.68
5.17
2.82
1.58
5.07
2.8
2.56
9.02
4.98
0.01
5.1
0.01
pulse
0 0
pulse
2.2
0
0
4.48
2.27
2.24
0
3.23
2.08
9.81
5.7
0.25
5.1
0.02
-28
-0.015
0
4.6
0
5.15
4.95
4.96
0
0
5.06
12.58
5.19
0.2
0.3
5
5
0
0
pulse
0
pulse
5.15
4.95
4.96
3.29
0
5.05
12.99
5.19
0.2
5.2
0.025
4.4
0.7
0.7
0.025
1.5
0.68
5.17
2.94
1.58
0
2.6
2.56
9.24
4.97
-0.01
5.1
4.7
4.7
-24
-24
5.1
0
4.48
2.18
1.03
0
0
2.08
9.82
5.7
Page 91
3-52 3-53
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD
LOCATION GUIDE
Page 92
2. MAIN P.C.BOARD
LOCATION GUIDE
3-54 3-55
Page 93
3-56 3-57
3. POWER P.C.BOARD
LOCATION GUIDE
NOTES) Warning
NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electricial shock.
Page 94
3-58 3-59
4. KEY P.C.BOARD
5. TIMER P.C.BOARD
Page 95
Page 96
Page 97
Page 98
Page 99
Page 100
3-85 3-86
Video signal Y
Video signal Color
Digitron all not display System not working
Program download fail
System not working or screen is abnormal
Video signal not appeared
No Power on
CIRCUIT DIAGRAMS
1. SYSTEM CIRCUIT DIAGRAM
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