Service manual

41
VL-FD1U
12. SIGNAL FLOW DIAGRAMS
12-1. EE MODE FLOW (VIDEO)
WAVEFORM DIAGRAM
(DURING COLOR BAR RECORDING)
WAVEFORM DIAGRAM
(DURING COLOR BAR RECORDING)
12-2. FLOW IN REC MODE (VIDEO)
IC452 117pin Rec GATE Output
IC452 116pin Rec DATA Output
CH1=1V
DC P*10
5ms/d
1
CH1=1V
DC P*10
5ms/d
1
IC452
REC/PB ENGINE
CDY
CDC
HEAD AMP
REC DATA
REC GATE
SC3301
B TO B
34
38
4239
48
117
116
29
31
IC4401
VIO ENGINE
ZYP
ZCP
140
131 137
127
130
121
124
174
164
168
182175
184
192
187
189
IC4401 170pin ZYP3 InPut
IC4401 254pin C Output
IC4401 184pin ZCP3 InPut
IC4401 249pin Y/YC Output
IC4401 134pin CDC3 Output
IC4401 124pin CDY3 Output
1
CH1=500mV
DC P*10
1
5ms/d
5ms/d
1
1
1
1
CH1=1V
DC P*10
5ms/d
5ms/d
CH1=1V
DC P*10
CH1=500mV
DC P*10
5ms/d
CH1=1V
DC P*10
CH1=1V
DC P*10
20µs/d
20µs/d
5ms/d
VIO ENGINE
IC1401
IC2800
VIDEO I/O
R
Y
C
G
B
VR VG
VB
LCD Panel
SEP-Y IN/OUT
SEP-C IN/OUT
VIDEO IN/OUT
48
9
12
14
19
1
43
168
249
254
175 182
184
187
189
192
53
22
24
20
7
6
8
164
ZYP
ZCP
174
IC4401
IC201
CAM ENGINE
83
88
93
94
97
104
128
137
ADIN