Sharp VL-WD250S Service Manual page 41

11-3. FLOW IN PB MODE (VIDEO)
HEAD AMP
PB_DATA
B TO B
PB_DATA
EQ/PLL
PB-CK
REC/PB ENGINE
40
CDY
161 163 164 169
CAM ENGINE
68 72 75
ZYP
IC4401 to VIO ENGINE
same as in EE system
11-4. FLOW IN REC MODE (AUDIO)
TELE-MIC
2 47
MIC AMP
MIC R
AUDIO I/O IC601
AUD-R ADIN
16Bit ADC/DAC IC1602
IC452
REC/PB ENGINE
REC DATA
44
SC3301
44
39
IC3401
13 32
2
IC3403
17
4
IC3404
2 1 1 2 A/D
3 10
ADIN
229 236
227
IC452
50 57
47
CDC
173 180 183 187 190
IC202
77 84 85 87 92
ZCP
IC6601
46 INT-MIC-L
INT-MIC-R
3
17 32
MIC L
27 30
20 21
AUD-L ADIN
3 6
12
AIDAT
13
243 244
REC GATE
same as in
REC system
WAVEFORM DIAGRAM
(DURING COLOR BAR PLAYBACK)
IC3401 39pin PBDATA Input
CH1=500mV
DC P*10
IC3401 44pin Input
CH1=1V
DC P*10
IC3401 1pin Output
CH1=500mV
DC P*10
WAVEFORM DIAGRAM (1.6 kHz SINE WAVE)
CH1=1V
DC P*10
41
VL-WD250S/H/E
VL-WD450S/H/E
IC3401 32pin Output
5ms/d
5ms/d
CH1=500mV
DC P*10
1
5ms/d
1
5ms/d
1
IC1602 12 Input
10µs/d
1
1