Sony Handycam DCR-TRV11, Service Manual

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5-39
6. White Balance Adjustment (PD-123 board)
Correct the white balance.
If deviated, the reproduction of the LCD screen may degenerate.
Mode Camera
Subject Arbitrary
Measurement Point Check on LCD screen
Measuring Instrument
Adjustment Page D
Adjustment Address A8, A9
Specified Value The LCD screen should not be colored.
Note:
Check the white balance only when replacing the following parts. If
necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC2104
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: A8 and A9, set the data to the initial
value.
Note: To write in the non-volatile memory (EEPROM), press the
PAUSE button of the adjustment remote commander each time
to set the data.
3) Check that the LCD screen is not colored. If colored, change
the data of page: D, address: A8 and A9 so that the LCD screen
is not colored.
Note:
To write in the non-volatile memory (EEPROM), press the
PAUSE button of the adjustment remote commander each time
to set the data.
When address: A8 or A9 is selected, the white balance
adjustment mode is set up automatically.
4) Select page: 0, address: 01, and set data: 00.
1-5-2. LCD SYSTEM ADJUSTMENT
(DCR-TRV6/TRV6E/TRV20E)
1. VCO Adjustment (PD-124 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode VTR stop
Signal No signal
Measurement Point Pin
9
of CN009 (H START) of
VC-240/241 board
Measuring Instrument Frequency counter
Adjustment Page D
Adjustment Address A2, A3
Specified Value f = 15734 ± 30Hz (NTSC)
f = 15625 ± 30Hz (PAL)
Note:
NTSC: DCR-TRV6
PAL: DCR-TRV6E/TRV20E
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: A2, change the data and set the VCO
frequency (f) to the specified value.
Note: The VCO adjustment mode is set up automatically, so the LCD
screen falls into the disorder.
3) Press the PAUSE button of the adjustment remote commander.
4) Select page: D, address: A2, read the data, and this data is named
D
A2
.
5) Convert D
A2
to decimal notation, and obtain D
A2
'. (Refer to
Table 5-4-1. Hexadecimal-decimal Conversion Table.)
6) Calculate D
A3
' using following equations (Decimal calculation),
convert it to a hexadecimal number, and input to address: A3.
DCR-TRV6:
D
A3
' = D
A2
' + 38
DCR-TRV6E:
D
A3
' = D
A2
' - 38
DCR-TRV20E:
D
A3
' = D
A2
' - 11
7) Press the PAUSE button.
8) Select page: 0, address: 01, and set data: 00.
Address
Data
A8
7F
A9
87