Sony CCD-TRV15, Service Manual, Page: 118 / 253

5-31
4. Bright Adjustment (PD-92/93 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
Note1 : LCD TYPE S model : CCD-TRV35/ TRV35E/ TRV65/
TRV65PK/ TRV93/ TRV615
LCD TYPE C model : CCD-TRV15/ TRV15PK/ TRV15E/
TRV15EP/ TRV25/ TRV25PK/
TRV85/ TRV215/ TRV815
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 55, and press the PAUSE
button of the adjusting remote commander.
3) Select page: 2, address: 7D, and set data: 40.
4) Select page: E, address: CF, change the data and set the voltage
(A) between the pedestal and white to the specified value. (The
data of address: CF should be “41” to “BF”.)
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
7) Select page: 2, address: 7D, and set data: 00.
8) Select page: 0, address: 01, and set data: 00.
Mode VTR stop
Signal No signal
Measurement point Pin
3
of CN5501/4501 (VG) of PD-
92/93 board
External trigger : Pin
4
of CN5501/
CN4501 (PANEL COM)
Measuring instrument Oscilloscope
Adjustment page E
Adjustment address CF
Specified value A = 1.94
±
0.05V
(LCD TYPE S model)
A = 1.34
±
0.05V
(LCD TYPE C model)
Fig. 5-1-24.
A
2H
White
Pedestal
5. Contrast Adjustment (PD-92/93 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode VTR stop
Signal No signal
Measurement point Pin
3
of CN5501/4501 (VG) of PD-
92/93 board
External trigger : Pin
4
of CN5501/
CN4501 (PANEL COM)
Measuring instrument Oscilloscope
Adjustment page E
Adjustment address D3
Specified value A = 3.52
±
0.07V
(LCD TYPE S model)
A = 2.54
±
0.07V
(LCD TYPE C model)
Note1 : LCD TYPE S model : CCD-TRV35/ TRV35E/ TRV65/
TRV65PK/ TRV93/ TRV615
LCD TYPE C model : CCD-TRV15/ TRV15PK/ TRV15E/
TRV15EP/ TRV25/ TRV25PK/
TRV85/ TRV215/ TRV815
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 55, and press the PAUSE
button of the adjusting remote commander.
3) Select page: 2, address: 7D, and set data: 00.
4) Select page: E, address: D3, change the data and set the voltage
(A) between the pedestal (0 IRE) and 100 IRE to the specified
value.
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
7) Select page: 0, address: 01, and set data: 00.
Fig. 5-1-25.
100 IRE
0 IRE
A
2H