Incom 1 Demodulation/Output Level Adjustments - Sony HDC1000 Maintenance Manual

3-9-3. INCOM 1 Demodulation/Output Level
Adjustments
Preparation
1. Set S701-8 to ON on the DPR-263 board in HDFX100.
n
A 1-kHz sine wave is output from the test signal
generator in HDFX100.
HDFX100
DPR-263 board
S701
INCOM 1 Demodulation Adjustment
2. Measuring equipment:
Oscilloscope
Input mode: DC
Test point: TP203 (GND: E4)/TR-136 board
Adjusting point: 1LV203/TR-136 board
A = 5.00 ± 0.05 V dc
Specification:
3. Change the input mode of the oscilloscope to AC.
3-34
4. Measuring equipment:
Test point:
Adjusting point: 1LV204/TR-136 board
Specification:
5. Repeat steps 2 to 4 to meet the specifications A and B.
INCOM 1 Output Level Adjustment
6. Measuring equipment:
Test point:
Adjusting point: 1RV201/TR-136 board
Specification:
7. Re-set S701-8 to OFF on the DPR-263 board in
HDFX100.
A
GND
A
S1
RV761
1
RV601
RV602
TP801
2
3
TR-136 BOARD (SIDE A)
Oscilloscope
Input mode: AC
TP204 (GND: E4)/TR-136 board
B = minimum
Oscilloscope
Input mode: AC
TP204 (GND: E4)/TR-136 board
C = 200 ± 5 mV p-p
B C
LV102
E2
TP605
RV102
TP604
LV103
RV103
LV105
RV801
RV105
TP401
TP106
E200
TP201
RV721
LV104
TP721 RV104
E1
TP602
TP603 TP601
B
C
D
RV204
LV210
LV209
TP210
TP209
RV203
LV208
LV207
TP208
TP207
RV201
LV204
LV203
TP204
TP203
RV202
LV206
LV205
TP206
TP205
LV202
TP202
E4
LV101
HDC1000/V1(E)