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DZ-MV230A - Camcorder
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Ic Block Diagrams - Hitachi DZ-MV230A Service Manual
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Instruction manual
(115 pages)
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Contents
Table of Contents
Troubleshooting
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Table of Contents
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1
2
IC BLOCK DIAGRAMS
IC0501(1/2)
MB3881
SW REG PWM
CONTROL
PWM
COMP.1-1
FB1
47
ERROR
AMP.1
-IN1
46
1.25V
PWM
VB1
COMP.1-2
SCP
COMP.1
1.0V
DTC1
48
PWM
COMP.2-1
FB2
44
ERROR
AMP.2
-IN2
43
PWM
1.25V
VB2
COMP.2-2
SCP
COMP.2
1.0V
DTC2
45
PWM
COMP.3
FB3
41
ERROR
AMP.3
-IN3
40
1.25V
SCP
COMP.3
1.0V
DTC3
42
PWM
COMP.4
FB4
38
ERROR
AMP.4
-IN4
37
1.25V
SCP
COMP.4
1.0V
DTC4
39
1
2
3
4
58
VCC(O)-1
<CH1>
FB5
20
ERROR
AMP.5
DRIVE
50
OUT1-1
-IN5
21
1-1
49
VSS(O)-1
SCP
COMP.5
52
VDD(O)
0.6V
-IN5(C)
23
DRIVE
51
OUT1-2
+IN5
22
1-2
DTC5
19
FB6
14
ERROR
AMP.6
<CH2>
-IN6
15
OVP
18
DRIVE
SCP
53
OUT2-1
2-1
COMP.6
0.6V
-IN6(C)
17
+IN6
16
DTC6
13
DRIVE
54
OUT2-2
2-2
FB7
10
ERROR
AMP.7
-IN7
11
+IN7
12
1.25V
SCP
<CH3>
COMP.7
1.0V
DRIVE
56 OUT3
3
DTC7
9
FB8
4
ERROR
AMP.8
-IN8
5
+IN8
6
SCP
COMP.8
-IN8(C)
7
+IN8(C)
8
DTC8
3
<CH4>
DRIVE
57 OUT4
4
CTL
1,3,4
CTL-2
29
CS CTL
LOGIC
CTL-3
30
CTL-4
31
BUFF
BUFF
55 GND(O)-1
CS
32
VB
36
2V
35
SYNC
3
4
5
IC0501(2/2)
MB3881
SW REG PWM
CONTROL
59
VCC(O)-2
<CH5>
PWM
COMP.1-5
DRIVE
60
OUT5
5
63
VSS(O)-2
<CH6>
PWM
COMP.6
DRIVE
61 OUT6
6
<CH7>
PWM
COMP.7
DRIVE
62 OUT7
7
<CH8>
PWM
COMP.8
DRIVE
64
OUT8
8
2
RB8
1 GND(O)2
CT1
1.73V
1.0V
CT2
1.73V
1.0V
CT
0.8V
0.3V
27
VCC
UVLO
POWER
REF
ON/OFF
28
CTL-1
SCP
OSC
CTL
H:ON(POWER/CH1,3,4,8)
L:OFF(STAND-BY MODE)
2.5V
33
34
26
24
25
RT
CT
CSCP
VREF
GND
5
6
7
IC6101
LA74206W
AUDIO PROCESS
48
47
46
45
44
43
42
41
40
39
38
LOGIC
MUTE
CTL
49
+9dB
+9dB
50
-5dB
BUZZER
51
MUTE
SHUTTER
R-CH
52
CENTER 0dB
MAX +12dB
+5dB
53
EVR
EVR
54
FADE
MATRIX
55
PB&
46PIN
LPF
MUTE
(3rd)
56
REC
57
SHUTTER
ON
LPF
R-CH
58
ON
(1st)
+6dB
OFF
FADE
VCCL
SERIAL
ALC
59
-6dB
MUTE
+13dB
OFF
60
INT
61
+6dB
R-CH
62
+14dB
63
MIC
VREFL
64
VCC
1
2
3
4
5
6
7
8
9
10
11
IC3801
MCVVQ111
B&W EVF DECODE
ANALOG
SEL
VDD
VBAT
VBAT
PDR
VDDH
HODL
CAP
44
43
42
39
40
37
32
SLEEP
1
VOLTAGE
VBG
33
REGULATOR
BAND GAP
PDR
REFERENCE
AGND
4
NTSC/PAL
10
OK
35
TIMING
PLL
GENERATOR
384Fh
PLL FILTER
7
H
V
V SYNC
46
H SYNC
45
SYNC
SEPARATOR
VH SEL
47
SYF
9
DC
VIDEO IN
5
RESTORE
CLAMP
6
BLKG
OSD LEVEL
OSD
3
DETECT
WHITE
BLK LEVEL &
VIDEO
AGND
12
GAIN ADJ.
AMPS
TEST
41
8
30
36
GAIN BLK GAMMA
BIAS
6
7
8
37
36
35
34
33
POWER
32
VREFH
MUTE
SERIAL
31
MUTE
+11dB
C
30
E
29
28
+11dB
SERIAL
27
MUTE
26
SERIAL
25
MUTE
+13dB
24
DET
23
ALC
LINE
MIC +17dB
MIC
LINE +4dB
VCCL
22
D
+6dB
21
EXT
ON
HPF
20
OFF
19
18
+6dB
17
INT
EXT
12
13
14
15
16
C
38
48
REF GND
20
VDD
19
VEE
18
VCOM
22
VREF
21
VSS
26
RENO
25
RENE
24
HCK
23
HPL
B
17
HODL
16
VPL
15
VCK
13
PDR
2
HODL SEL
Q
D
11
DGND
27
VIDL
28
VIDLC
29
VIDHC
14
VIDH
A
34
31
6 - 9
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