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

1 2

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