Read Sony CCD-TR555 / CCD-TR555E Service Manual online
6-29
1-3-5. Back Light Adjustment (VC-175 board)
Purpose :
Set brightness of the back light (fluorescent
lamp) to a constant level.
lamp) to a constant level.
Adjustment error :
The EVF screen will become too dark or too
bright.
bright.
Mode
Adjustment mode (A)
Singal
30% all white signal
Measurement Point
VC-175 board CN006
(+) probe : pin !ª (EVF UNREG)
(–) probe : pin !¶ (EVF UNREG (–))
(+) probe : pin !ª (EVF UNREG)
(–) probe : pin !¶ (EVF UNREG (–))
Measuring Equipment
Digital voltmeter
Adjustment Page
D
Adjustment Address
50
Specification
21.5
±
1.0mV
Note :
Perform this adjustment after 30 seconds of warm up after
the power is turned ON.
the power is turned ON.
Adjustment Procedure:
1-3-6. White Balance Adjustment
Purpose :
Calibrate the white balance.
Adjustment error :
The color reproduction of the LCD screen
becomes poor.
becomes poor.
Mode
Adjustment mode (A)
Singal
30% all white signal
Measurement Point
Check white balance on the LCD
Measuring Equipment
screen.
Adjustment Page
D
Adjustment Address
49, 4A
Specification
The LCD screen must not have any
colors.
colors.
Adjustment Procedure:
Order
Page
Address
Data
Procedure
1
Confirm that the DC voltage at CN006 pin !ª (EVF UNREG) is 6.0
±
0.1 V DC.
(across CN006 pin 7 (EVF GND))
2
Set the adjustment mode (A). (See “Video Signal For Adjustment” on page 6-25.)
3
0
01
01
Set the data. (Preparation)
4
D
50
Change the data until the voltage difference between CN006 pin !ª and CN006 pin !¶
satisfies the specification.
satisfies the specification.
5
Press the PAUSE button.
6
Exit the adjustment mode (A). (See “Video Signal For Adjustment” on page 6-25.)
7
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
Confirm that the LCD screen has not color at all.
4
D
49, 4A
If the LCD screen has any colors, change the data until the LCD screen has any colors.
5
Press the PAUSE button.
6
Exit the adjustment mode (A). (See “Video Signal For Adjustment” on page 6-25.)
7
0
01
00
Set the data. (End)
Fig. 6-1-15.
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