Read Sony CCD-TR555 / CCD-TR555E Service Manual online
6-28
1-3-3. BRIGHT Adjustment (VC-175 board)
Purpose :
Adjust brightness of EVF screen (appearance)
Adjustment error :
The EVF picture will be close to saturated picture
(white washing) or black compression.
(white washing) or black compression.
Mode
Adjustment mode (B)
Singal
All black signal
Measurement Point
CN006 pin @º (EVF VG) on
VC-175 board
VC-175 board
Measuring Equipment
Oscilloscope
Adjustment Page
D
Adjustment Address
48
Specification
A=7.2
±
0.1Vp-p
Connection
1)
Connect CN006 pin @º and pin 7 (REG GND) using a 3300
Ω
resistor (1-249-423-11).
Adjustment Procedure:
Related adjustment items
[White Balance Adjustment]
1-3-4. CONTRAST Adjustment (VC-175 board)
Purpose :
Adjust constrast of the EVF screen.
Adjustment error :
The EVF picture becomes dull (white washing)
or close to saturated image.
or close to saturated image.
Mode
Adjustment mode (A)
Singal
30% all white signal
Measurement Point
CN006 pin @º (EVF VG) on VC-175
board
board
Measuring Equipment
Oscilloscope
Adjustment Page
D
Adjustment Address
4B
Specification
A=1.75
±
0.1Vp-p (NTSC)
A=1.70
±
0.1Vp-p (PAL)
Connection
1)
Connect CN006 pin @º and pin 7 (REG GND) using a 3300
Ω
resistor (1-249-423-11).
Adjustment Procedure:
Order
Page
Address
Data
Procedure
1
Set the adjustment mode (B). (See “Video Signal For Adjustment” on page 6-26.)
2
0
01
01
Set the data. (Preparation)
3
D
48
Change the data until the voltage difference (A) between the inverted waveform's pedestal and
the non-inverted waveform's pedestal satisfies the specification.
the non-inverted waveform's pedestal satisfies the specification.
4
Press the PAUSE button.
5
Exit the adjustment mode (B). (See “Video Signal For Adjustment” on page 6-26.)
6
0
01
00
Set the data. (End)
Order
Page
Address
Data
Procedure
1
Set the adjustment mode (A). (See “Video Signal For Adjustment” on page 6-25.)
2
0
01
01
Set the data. (Preparation)
3
D
4B
Change the data until the voltage difference (A) between the 30% all white signal and the
pedestal satisfies the specification.
pedestal satisfies the specification.
4
Press the PAUSE button.
5
Exit the adjustment mode (A). (See “Video Signal For Adjustment” on page 6-25.)
6
0
01
00
Set the data. (End)
Fig. 6-1-13.
Fig. 6-1-14.
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