Black Limit Adjustment (Pd-125 Board); Bright Adjustment (Pd-125 Board) - Sony DSR-50P Service Manual

2. Black Limit Adjustment (PD-125 Board)

Mode E-E
Signal Arbitrary
Measurement Point Pin 2 of CN505 on FR-157 board
(PSIG)
Measuring Instrument Oscilloscope
Adjustment Page E
Adjustment Address 82 (WIDE mode), 87 (NORMAL
mode)
Specified Value WIDE mode: A = 8.00 ± 0.05 Vp-p
NORMAL mode: B = 5.00 ± 0.05
Vp-p
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 9, address: 0F, set data: 01, and press the PAUSE
button.
3) Check that the LCD screen change to wide mode.
4) Select page: E, address: 82, change the data and adjust PSIG
signal (A) to the specified value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 9, address: 0F, set data: 00, and press the PAUSE
button.
7) Check that the LCD screen change to normal mode.
8) Select page: E, address: 87, change the data and adjust PSIG
signal (B) to the specified value.
9) Press the PAUSE button of the adjustment remote commander.
10) Select page: 0, address: 01, and set data: 00.
WIDE mode
A
V
NORMAL mode
B
Fig. 5-3-50

3. Bright 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: 08, and press the PAUSE
button.
4) Select page: E, address: 8A, change the data and adjust the
voltage (A) between the reversed waveform black level and
non-reversed waveform black level 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
Black level
5-87
E-E
Arbitrary
Pin 5 of CN505 on FR-157 board
(VG)
Oscilloscope
E
8A
A = 5.75 ± 0.05 Vp-p
Black level
2H
Fig. 5-3-51