Playback Y Level Adjustment (Jc-21 Board); Playback C Level Adjustment (Jc-21 Board) - Sony DSR-25 Service Manual

10. Playback Y level Adjustment (JC-21 Board)

Mode E-E
Signal No signal
Measuring Point Pin qd of CN1101 (CL1122)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 25
Specified value Y level: A = 1.00 ± 0.01 Vp-p
SYNC level: B = 0.286 ± 0.01 Vp-p
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 02, and press the PAUSE
button of the adjustment remote commander.
3) Select page: C, address: 25, change the data and adjust the Y
signal level (A) to the specified value.
4) Press the PAUSE button of the adjustment remote commander.
5) Check that the SYNC signal level (B) is specified value.
6) Select page: 3, address: 0C, and set data: 00, and press the
PAUSE button.
7) Select page: 0, address: 01, and set data: 00.
B
H
Fig. 5-3-6

11. Playback C level Adjustment (JC-21 Board)

Mode
Signal
Measuring Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified value
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 02, and press the PAUSE
button of the adjustment remote commander.
3) Select page: C, address: 26, change the data and adjust the CR
signal level (A) to the specified value.
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: C, address: 27, change the data and adjust the CB
signal level (B) to the specified value.
6) Press the PAUSE button of the adjustment remote commander.
7) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button.
8) Select page: 0, address: 01, and set data: 00.
A
0.28 µsec (NTSC)
0.23 µsec (PAL)
5-55
E-E
No signal
Pin qg of CN1101 (CL1124)
Oscilloscope
C
26, 27
CR level: A = 0.714 ± 0.01 Vp-p
CB level: B = 0.714 ± 0.01 Vp-p
H
A
B
0.28 µsec (NTSC)
0.23 µsec (PAL)
Fig. 5-3-7
DSR-25
C