WV-CLR920A, WV-CLR924AE - Panasonic Video Monitoring Service Manual Simplified (repair manual). Page 9

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4-1
SCHEMATIC DIAGRAM OF MAIN BOARD (3/3)
C452
0.1
R452
11
K
R1023
0
R1036
0
R464
1M
C429
0.1
R470
47K
R471
47K
0
R1035
0
R1034
D403
TP405
TP403
LP
FVD
R472
100K
C475
1
C430
33P
C431
33P
TP402
TP401
R451
MI-COM
NT/P
AL
NT/PAL
RESET
FCK
0
R1014
C816
C815
0.1
OPEN
0
L406
2.2
R473
0
R477
7.5K
R474
7.5K
LLDET2
EXT BW
ALARM
LLDET1
RS485EN
2W/4W
R475
2.4K
R476
2.4K
CN404
CN403
C813
OPEN
R586
0
R511
OPEN
R465
OPEN
R589
OPEN
R594
0
R518
1K
R1013
300K
R1012
100K
C449
0.01
C1509
OPEN
C1510
100P
C1700
R1200
1K
OPEN
R595
0
C808
R400
0
C477
15/6.3
C81
1
OPEN
0.1
L403
2.2
C810
OPEN
C481
15/6.3
L407
2.2
C807
OPEN
0.1
C480
10/10
C812
L404
2.2
C809
OPEN
C482
10/10
L408
2.2
C806
C814
0.1
OPEN
X401
R588
OPEN
R466
OPEN
IC1003
IC406
C428
0.1
R456 10K
R453
10K
R449
10K
R450
30K
IC419
TP404
C483
10/10
CN402
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
1
2
3
4
5
6
7
8
1
2
3
5
1
2
3
4
1
2
3
4
5
6
7
8
1
IN
2
OUT
3
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
SD1
SD2
SCLK
BEND
D7
D6
D5
D4
D3
D2
D1
D0
LD
ROMCS
NRE
NWE
ALE
RS485DET
A11
A14
A13
A12
CGCS
LP
(AUDIO VR)
BUSY
VIDEO
(FMFREQ)
(LPFO)
(LPFI)
RS485DET
RS485SD
RS485RD
RS485EN
S-G/L
VIDEO
UP
DOWN
RIGHT
LEFT
SET
BUSY
ROMCS
SCLK
SD1
SD2
ALC SW
S-DATA
+5V
+10.5V
+5V
+1.8V(1)
+1.8V
+1.8V(2)
+2.7V(1)
+2.7V(2)
+3.3V(1)
+3.3V
+3.3V(1)
+3.3V
RD/BSY
VCC
CS
SK
R
GND
DO
DI
+2.7V
+2.7V
RS+6.2V
LP
LLDET
RSGND
GND
+5V
+3.3V
+10.5V
WAIT
/RE
/WE
P63
P50(UP)
P51(DOWN)
P52(RIGHT)
P53(LEFT)
P54(SET)
P55(NT/PAL)
ALE
/WORD
SBT2(CLK2)
SBI2(RXD2)
SBO2(TXD2)
P23(RS485DET)
VDD
XI,PB1
BOSC,PB0
XO,PB2
VSS
VDD
OSCI
OSCO
MODE
VDD
A8
P26
P25
P24 (ALARM)
VSS
P10(ROM1 CS)
P1
1(DAC LD)
P12(TG CS)
P13(LENS CS)
P14(FRICKERLESS)
P15(SER
VO CS)
P16
P17(ROM2 CS)
A9
A10
A1
1
P27 (EXT
 BW)
AD7
AD6
A12
A13
AD0
AD1
AD2
AD3
AD4
AD5
SBO1(TXD1)
/NMI
IRQ0(LP)
IRQ1(VD)
IRQ2(BEND)
IRQ3(PCK)
IRQ(TCK)
PA
5
/RST
VDD
P_UP
P_UP
SBI1(RXD1)
SBT1(CLK1)
SBO0(TXD0)
SBI0(RXD0)
SBT0(CLK0)
VPP
P97 (IR-ENA)
P96 (IR-IN1)
P95 (IR-IN2)
P94(MANUAL IRIS)
VSS
P93
P92(FIELD)
P91(TG SUPPRESS)
P90(ROM WP)
(RS485SD)SBO4
(RS485RD)SBI4
VREFH
SBT4
SBO3
SBI3
SBT3
P81,DAC1
P80,DAC0
P47 (CG CS)
VREFL
P43 (LLDET1)
P42 (EVR 
TEST)
P41 (2W/4W)
P40 (RS485EN)
A14
A15
P46 (BUSY)
P45 (ALCSW)
P44 (LLDET2)
+5V
VIDEO
IR-IN2
GND
 
UP
DOWN
RIGHT
LEFT
SET
REF
DUMP
DRIVE
VIDEO GND
+2.7V
IR-ENA
+1.8V
+3.3V
SD
RD
ACTS
9
ALARM/AP
10 G/L•FLICKERLESS
11 EXT BW
12 2W/4W
GND
RSGND
TXDET
GND
RS+6.2V
IR-IN1
REF
DUMP
DRIVE
UP
DOWN
RIGHT
LEFT
SET
FLICKERLESS
(16MHz)
FLICKERLESS
IC411
IC410
R532
2.4K
R536
7.5K
R528
2.4K
R534
7.5K
R512
0
C443
0.1
C450
0.1
C1508
OPEN
R516
0
R520
OPEN
R504
200
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
CHD
CVD
CHARA
WCHARA
SCLK
CGCS
SD1
RESET
CLK
/CS
DATA
/PCL
VDD
/CKD
OSCO
OSCI
TEST
GND
/HS
/VS
VB
VG
VR
VBLK
VC2
BLK2
VC1
BLK1
CK
D
QB
GND
VC
PR
CR
Q
+3.3V(1)
+2.7V(2)
+3.3V(1)
+5V
+2.7V
+2.7V(1)
+1.8V(1)
+1.8V(2)
+10.5V
+3.3V(1)
+5V
+2.7V(1)
+3.3V
–
+
–
+
–
+
–
+
–
+
TO
POWER
BOARD
CN101
TO
I/F
BOARD
CN1
TO
I/F
BOARD
CN8
IC408
MICROCOMPUTER
EEPROM
RESET
VOLTAGE
DETECTOR
COUNTER
CHARACTER
GENERATOR
<INDEX>
MAIN BOARD (3/3)
IC406
C13,D13
IC408
A14,A15,A16,
B14,B15,B16
IC410
D15
IC411
C15,C16,
D15,D16
IC419
D14
IC1003
A17
D403
B16
TO
MAIN
BOARD
(2/3)
(Page 4-3)
TO
MAIN
BOARD
(2/3)
(Page 4-3)
TO
MAIN
BOARD
(1/3)
(Page 4-2)
TO
MAIN
BOARD
(1/3)
(Page 4-2)
            marked parts are
different from the
Original Service Manual.
MAIN BOARD (3/3)
A
13
B
C
D
14
15
16
17
18
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