6
2-2. SERVO-LOGIC CIRCUIT ADJUSTMENT METHOD
1. VIDEO HEAD SWITCHING POSITION
1) Play back the test tape.
2) Set the oscilloscope in the CHOP mode connect the CH1 to SW pulse PT01 2 PIN the CH2 to TP396 with CH1 triggering.
3) Adjust RV501 for the positive trigger until 6.5H
¡
0.5H cycles before the vertical SYNC pulse.
2-3. VIDEO CIRCUIT ADJUSTMENT METHOD
1. E E VIDEO LEVEL
1) Feed the color bar signal to the line input terminal. And set for the stop (EE) mode.
2) Connect the oscilloscope to TP395 and trigger the scope with a composite SYNC signal at TP313 .(COMP.SYNC.)
3) Adjust the oscilloscope so that it can display a waveform of approx. 2H.
4) Adjust RV395 to obtain 0.5
¡
0.02 Vp-p between SYNC TIP and 100% white level.
Adj. Location
Checking Point
Measuring Equipment
Mode
Test Tape
RV501
PT01 3 PIN
Oscilloscope
Play
DP-1
TP396
Adj. Location
Checking Point
Measuring Equipment
Mode
Test Tape
RV395
TP395
Oscilloscope
EE
ƒ¡
0.5
¡
0.02Vp-p
Содержание DVR-1181D
Страница 13: ...3 1 CONNECTION DIAGRAM 11 SECTION 3 CIRCUIT DIAGRAM...
Страница 14: ...3 2 POWER CIRCUIT 12...
Страница 15: ...3 3 SERVO SYSCON CIRCUIT 13...
Страница 16: ...3 4 VIDEO CIRCUIT 14...
Страница 17: ...3 5 PRE AMP CIRCUIT 15...
Страница 18: ...3 6 AUDIO CIRCUIT 16...
Страница 19: ...3 7 LOGIC SW CITRCUIT DVR 1181 SERIES 17...
Страница 20: ...3 8 LOGIC SW CITRCUIT DVR 1383 SERIES 18...
Страница 21: ...3 9 LOGIC SW CITRCUIT DVR 1989 SERIES 19...
Страница 30: ...5 2 PCB FRONT AS DVR 1181 SERIES FRONT PCB DVR 1383 SERIES FRONT PCB DVR 1989 SERIES FRONT PCB 28...