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Block Diagrams; Overall Block Diagram - Hitachi VK-S274R Service Manual

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4. Block Diagrams

4-1 Overall Block Diagram

G
IC1001
PG1001
PG1241
IMAGE
Q1001
(1/2)
(1/2)
SENSOR
BUF.
7
7
7
H1,H2,
V1,V2
RG
V3,V4
44-46
44-46
IC1002
13,14,
13,14,
37-41
37-41
SENSOR
F
DRIVE
3,5,
7-10,
XV1,XV2,XV3,XV4
17,18
12-14
XSG1,XSG2,XSUB
SP
(1/2)
E
Q1352,
PG1302
Q1353
8
IRIS
IRIS
M
DRIVE
MOTOR
D
12
HALL
10
DEVICE
11
9
C
4
ZOOM
M
1
MOTOR
3
2
20
FOCUS
M
17
MOTOR
B
19
18
6
ZOOM
SENSOR
5
ZOOM
LED
FOCUS
15
SENSOR
A
14
FOCUS
LED
1
2
3
CAMERA DSP
IC1101
CDS/AGC & A/D CONV
10
27
2-11
136-144
CDS
AGC
A/D
AUTO
FOCUS
DET.
17-19
43-45
16
SP1,
DATA,
ADCK
SP2,
134
CLOCK,
OBP
CS
PULSE
146-148,151,
GEN.
152,154
155-159,
161,163
6,9,
175,176
HD,EP3,
8
2,4,5
FV,FP
RESET
FV
38,72,
75,78
HD,EP3
FV,FP
96-98
DATA,
CLOCK,
CS
IC1351
F.DET/IRIS DRIVE
9
7
28
IRIS PWM
22
21
23
IC1201
CAMERA µP
24
6
43
HAL-ADJ1
19
10
52
F.DET
18
16
F.DET
69
11
17
HALL-G
Q1351
44
15
12
BIAS
HAL-ADJ0
BIAS
DRIVE
IC1301
ZOOM MOTOR DRIVE
26
ZD-RESET
14
5
DRIVE
10
16
1
ZDCK
DECORD
9
20
8
ZDOEB
DRIVE
23
11
34
ZDCW
IC1302
FOCUS MOTOR DRIVE
27
RD-RESET
5
14
DRIVE
16
1
9
RDCK
DECORD
20
9
7
RDOEB
DRIVE
23
11
35
RDCW
41
ZOM-SENS
39
FUS-SENS
30
ZOOM-LED
Q1201
LED
DRIVE
33
FCUS-LED
3
4
5
IC1121
IC1122
DRAM
Y/CHROMA
DIGITAL
PROCESS
PG1241
PG1001
[S274R/S274ER]
(2/2)
(2/2)
Q1153
BUF.
CHROMA
27
27
65
D/A
66
22
22
Y
Q1152
BUF.
174
33 33
C,SYNC
FV
171
19
19
166 23
3
LL. OSC
IC1173
INV.
FSC
4
2
31
31
1
LD-DSP
CP1171
MCK2
36
36
83-85
(9.5MHz)
DATA,
CLOCK
XCCDI
25
65
EXTAL
IC1204-1206,
IC1251
24
RESET
59
SYS-REST
PULSE
GEN.
IC1174
29,30
4
7.2V
CLOCK
GEN
16
2
X1172
S274R/K274R: 28.6MHz
13
S274ER/K274ER: 28.5MHz
35
35
LINE-SW
5V
76
SD(232C)
77
28
28
RD(232C)
3V
48
+B_DET
20
20
IC1202
EEPROM
2V
2-4
DATA
CLOCK
1
99
CS-EE(1)
CS
IC1203
EEPROM
2-4
DATA
CLOCK
1
100
CS-EE(2)
CS
95
17 17
STBY_5V
49
D1201
TEMP-ADJ
PC
4
5
- 10 -
6
7
S274R
S274ER
K274R
K274ER
L1603
Provided
C1617
Not Provided
BPF
3.58MHz 4.43MHz
IC1601
Y/C MIX &
[S274R/S274ER]
VIDEO AMP
Q1605
L1603,
PG1002
PG1501
BUF.
C1617
16
16
7
12
BPF
15
15
2
11
Q1607,Q1609,
Q1610,Q1611
27 27
C.CLIP
IC1603
VCO/PHASE COMPA.
Q1602
Q1601
3
6
6
14
INT.FV
EXT.FV
SW
SW
PHASE
13
COMPA.
VCO
OUT
26
26
9
10
VCO
Q1603
IC1604
BUF.
INT-LL
25
25
FV
PULSE
GEN.
IC1602
LEVEL SHIFT
SD
25
18
18
12
11
24
13
13
8
9
RD
IC1502
29,30
19,20
19,20
1,2
7.2V
REG
16
2
2
CP1601
Q1501
IC1501
10
10
PWM
5V
SW
5V
44
5V
1,36,
PWM
Q1502
42,43
22
22
VCC1-4
3V
SW
3V
3V
35
12
3V
VCC
PWM
Q1503
9
9
18
2V
STBY4
SW
19
2
2V
STBY3
PWM
20
STBY2
PWM
21
STBY
41
CAM
Q1504
SW
D1501
T1501
8
8
15V
23
23
-7.5V
D1503
Q1506
SHORT
PROTECT
3 3
SP
CSR
(2/2)
6
7
8
G
PG1601
OUTPUT
6
VIDEO
F
8
EX-FV
E
2
SD(232C)
1
RD(232C)
D
F1601
4
B+
5
GND
C
B
A
8

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