Block Diagram - Main Section - Sony HCD-GNZ55D Service Manual

Q Q
3 7 6 3 1 5 1 5 0
6-3. BLOCK DIAGRAM — MAIN SECTION —
VIDEO
B
SECTION
DOWNMIX L
(Page 28)
TU901
LCH 5
RCH 3 R–CH
FM 75Ω
+9V 4 ST A+9V
COAXIAL
DIN
DO 8
DOUT
ANTENNA
DI 6
CLK
CL 7
AM
CE
CE 9
TUNED
TUNED 1
MIC AMP
IC1401 (1/2)
J1400
MIC
RV1400
MIC
LEVLE
T E
L 1 3 9 4 2 2 9 6 5 1 3
(DECK A)
HP901
PB
HEAD
R-CH
(DECK B)
REC/PB
Q113,114
HEAD
R-CH
HRPE901
T101
Q154,
BIAS OSC
155
ERASE
Q112
HEAD
TAPE
MECHANISM
MUTE CONTROL
DECK R-CH
Q107–109
BLOCK
B SHUT
A SHUT
A HALF
B HALF
REC(REV)
REC(FWD)
CAP CONTROL
CAP M+
B TRG CONTROL
B TRGM+
A TRG CONTROL
A TRGM+
w w w
HCD-GNZ55D
FRONT L
MUTE MUTE
Q238 Q237
57 FRONT
4
3
59
75
76
17
34
35
37
39
38
36
40
MIC AMP
IC1401 (2/2)
DVD/CD MUTE
CONTROL 34
Q307,308
83
84
23
BIAS+9V
MUTE
MUTE
Q166
Q175
MUTE CONTROL MUTE CONTROL
Q110,111 Q301,302
90
89
63
91
Q120,121
7
20
Q118,119
21
18
Q122,123
19
17
INIT
12
AUDIO
C
NSP MUTE
9
SECTION
SOFT MUTE 10
(Page 30)
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REC/PB AMP,
SOUND CONTROL
IC101
DVD/CD
TU–LCH
FRONT L 28
FRONT R 37 R–CH
MIC
DBFB
F/B 26 FEED BACK
PB A
Q101
PB B
REC
CLK
DATA
L+R LIGHTING 53
DIN
DOUT
CLK ST
CE
TUNED
DVD A MUTE
DATA
VACS IN 88
CLK
Q Q
3 7 6
MIC DETECT
SYSTEM
CONTROL
IC401 (3/4)
DATA
IO EXP DATA OUT 66
RST
IO EXP RST 68
CLK
IO EXP CLK 69
LAT
IO EXP LAT 70
VIDEO
SECTION
B SHUT
(Page 28)
A SHUT
A HALF
VIDEO MUTE 21
B HALF
SIGNAL IN/OUT CONTROL
IC403
REC MUTE
REC BIAS
ADC RESET 22
TC REALY
RST
CAMP CNT
RESET 2
CLK
B TRIG
CLK 3
LAT
A TRIG
LATCH 4
DATA
SM INIT
D1 26
SM NSP MUTING
SM SOFT MUTING
u 1 6 3
29 29
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2 4
8 9 9
FRONT L
D
ADC RESET
DBFB FEED BACK
J506
D–LIGHT
SYNC OUT
3 1 5 1 5 0 8 9 2
VIDEO SIGNAL SELECT
IC1800
OUT
2
A
V 4 IN
SAG 3
PC
1
m
c o
.
HCD-GNZ55D
2
8 9 9
AUDIO
SECTION
(Page 30)
• Signal Path
4 9 8 2 9 9
: AUDIO
: TUNER
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
: VIDEO
• R-CH is omitted due to same as L-CH.
J1900
VIDEO
OUT