Ic Block Diagrams - Hitachi DZMV238EAU Service Manual

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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-MPB
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
+5dB MAX +12dB
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
MCVVQ111FB
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
Q D 2 HODL SEL
11 DGND
27 VIDL
28 VIDLC
29 VIDHC
14 VIDH
A
34 31
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