Block Diagrams & Circuit Diagrams; Overall Block; Circuit Waveforms; Sensor Board Circuit - Sanyo VCB-3385P Service Manual

BLOCK DIAGRAMS & CIRCUIT DIAGRAMS
K

OVERALL BLOCK

J
VL
15V SENSOR BOARD MAIN BOARD
12
9 U101
VDD PT Q001
I 8 22,23
CCD
EF AGC
OUT
Q002
CCD
27 IRIS
CLP
H
12
VL101,
IRIS
X101 D119
DRIVER
OSC PLL
IRIS
TO LENS
U102 42 39 CCD DRIVER
6,3,4,2,7
SYNC SEP
V DRIVER
V1,V2,V3,V4,SUB
TG/
G
SG
45,46,48
H DRIVER
H1,H2,RG
F

CIRCUIT WAVEFORMS

E
TEST POINT TEST POINT
WAVEFORM
LOCATION LOCATION
U102
U102
PIN 6 PIN45,46
V1 H1,H2
5V/div
5V/div
50µs/div 100ns/div
D
U102
U102
PIN 3 PIN 36
V2
HD
5V/div
5V/div
50µs/div 20µs/div
C
U102
U102
PIN 4
PIN 25
V3
SYNC
5V/div
2V/div
50µs/div
50µs/div
U102
B
PIN 2
V4
5V/div
50µs/div
A
1 2 3 4
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CAMERA PROCESS
32
DRIVE VIDEO OUT
ADD
GAMMA
SYNC
8,9
7
11
GAMMA
U105
38
SYNC SEP EXT SYNC
SYNC
LL
37
WAVE FORM
AC_LINE
EVD
U112(A~C)
U115
L73R2_BLK
WAVEFORM
U101 BLOCK (CXA1310)
WF-L73R
5 6 7 8
SENSOR BOARD
(CCIR)
CONNECTOR
TO MAIN BOARD P103
P001
CCD
TO Q001
1 2 CCD
VL
1 2
CCD 3 4
+15V
3 4
+15V 5 6 VL
V2
5 6
V1
7 8
V4
7 8
V3
V1 9 10 V2
9 10
SUB
V3 11 12 V4
H1
11 12
SUB 13 14
RG
13 14
RG 15 16 H1
15 16
H2
H2 17 18
17 18
GND
CM\FH12-18S-0.5SV
VOLTAGE: POWER ON
U102 BLOCK (CXD2463)
39 37 38 34 33
NO SIGNAL SYNC
DISCRIMINATION
DETECTION
CIRCUIT
CIRCUIT
LCIN 40
VD DETECTION
CIRCUIT SYNC
SEP
41
LCOUT
VD HD
HV-PLL SELECTOR RESET
GEN
HV-PLL SELECTOR
CKI 42
1/2 1/606
1/525
1/910
CCD 28 1/625
1/908 IHD
AV 47
SS
IVD
H1 45
EIA
H2 46
AV DD 44
GATE
TG/SSG
RG 48
SHP 31
SHD 30
V1 6
V2 3
UP/DOWN ADDER
V3 4
V4 2
CXA1310
VL 8
VM 1
SUB 7
5 25 26 23 24 15 17 18 14 12 13
9 10 11 12
C3

SENSOR BOARD CIRCUIT

TO P001
R001
9.5
10
+15V
Q002
R003
D001
ICX409AL
100K
MA111
CCD
D002
C004
1u 35VA C005
SUB
0.1u MA111
TO P001
R004
100K
TO P001
C006
1000p
U103 BLOCK (MB3776)
35 36 27 19 43 16 32 22
V
CC
TEST CIRCUIT
3
29
RST
0.6 V
Reference
CTL 2
GATE
voltage
IRIS/SHUTTER
0.1 V
CK GEN
1.25 V
21 ESHUT1
Internal bias &
COUNTER reference voltage
20 ESHUT2
Error Amp.
—IN 1 —
36 kΩ
SELECTOR
X 100
+
DECODE 0.5 V
FB 8
CXD2463
11 10 9
13 14 15 16
K
+15V
TO P001
R002
100
J
Q001 C001
2SC2714 0.1u
CCD I
TO P001
R005
5.6K
H
+15V
TO P001
+ C007
10u 25V
G
C003
R006
0.1u
1M
F
VL
TO P001
C008
C002
1u 25V
0.1u
E
D
OSC
7
I I
S B
Saw—tooth
I
s
waveform C
0.1 V
30 kΩ
5 OUT
P. W. M. Comp
—
Output drive
+ 4 I
B
control
+
470 Ω
B
D. T. C. ( 0.6 V)
MB3776
6
GND
A
17 18 19