Gamma 1 Adjustment (Pd-125 Board); Contrast Adjustment (Pd-125 Board) - Sony DSR-50P Service Manual

4. Gamma 1 Adjustment (PD-125 Board)

Mode E-E
Signal Arbitrary
Measurement Point Pin 5 of CN505 on FR-157 board
(VG)
Measuring Instrument Oscilloscope
Adjustment Page E
Adjustment Address 83
Specified Value A = 0.92 ± 0.05 Vp-p
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 60, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 02, and press the PAUSE
button.
4) Select page: 9, address: 0E, set data: 40, and press the PAUSE
button.
5) Select page: E, address: 83, change the data and adjust the
voltage (A) between the pedestal and GAMMA 1 limiter level
to the specified value.
6) Press the PAUSE button of the adjustment remote commander.
7) Select page: 9, address: 0E, set data: 00, and press the PAUSE
button.
8) Select page: 3, address: 22, set data: 00, and press the PAUSE
button.
9) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button.
10) Select page: 0, address: 01, and set data: 00.
GAMMA 1
limiter level
A
Pedestal
(0 IRE)
Fig. 5-3-52
2H

5. Contrast Adjustment (PD-125 Board)

Mode
Signal
Measurement 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: 60, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 01, and press the PAUSE
button.
4) Select page: E, address: 8C, change the data and adjust the
voltage (A) between the pedestal and 90IRE to the specified
value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 3, address: 22, set data: 00, and press the PAUSE
button.
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
Pedestal
(0 IRE)
5-88
E-E
Arbitrary
Pin 5 of CN505 on FR-157 board
(VG)
Oscilloscope
E
8C
A = 2.00 ± 0.05 Vp-p
90 IRE
2H
Fig. 5-3-53