Bright Adjustment (Vf-110 Board); Contrast Adjustment (Vf-110 Board) - Sony Handycam CCD-TR86 Service Manual

19-4.

BRIGHT adjustment (VF-110 board)

Purpose :
Adjust brightness of EVF screen (appearance)
Adjustment error : The EVF picture will be close to saturated
picture (white washing) or black compression.
Mode Playback
Signal Signal
CN702 pin 3 (G OUT) on
Measurement Point
VF-110 board
Measuring Equipment Oscilloscope
Adjustment Page F
Adjustment Address CC
Specification A=7.0 ± 0.1Vp-p
Connection
Connect CN702 pin 3 and pin 2 (EVF GND) using a 3300
1)
resistor (1-249-423-11).
Adjustment Procedure:
Order Page Address
1 6 00
2 F CC
3
4 6 00
Related adjustment items
[White Balance Adjustment]
19-5.

CONTRAST adjustment (VF-110 board)

Purpose :
Adjust contrast of the EVF screen.
Adjustment error : The EVF picture becomes dull (white washing)
or close to saturated image.
Mode Playback
Signal Signal
CN702 pin 3 (G OUT) on
Measurement Point
VF-110 board
Measuring Equipment Oscilloscope
Adjustment Page F
Adjustment Address D1
Specification A=2.0 ± 0.1Vp-p (NTSC)
A=2.0 ± 0.1Vp-p (PAL)
Connection
Connect CN702 pin 3 and pin 2 (EVF GND) using a 3300
1)
resistor (1-249-423-11).
Adjustment Procedure:
Order Page Address
1 6 00
2 F 4B
3
4 6 00
Data
01 Set the data. (Preparation)
Change the data until the voltage difference (A) between the inverted waveform's pedestal
and the non-inverted waveform's pedestal satisfies the specification.
Press the PAUSE button.
00 Set the data. (End)
Data
01 Set the data. (Preparation)
Change the data until the voltage difference (A) between the 50% all white signal and the
pedestal satisfies the specification.
Press the PAUSE button.
00 Set the data. (End)
Procedure
Procedure
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