Read Sony DSC-P71 / DSC-P71M (serv.man2) Service Manual online
5-35
DSC-P71/P71M
3. Backlight Current Adjustment (PK-064 Board)
Adjust electric current value of backlight in two modes.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 6 of CN903 (BL-L2)
Pin 1 of CN903 (BL-L1)
Pin 1 of CN903 (BL-L1)
Measuring Instrument
Digital voltmeter
Adjustment Page
A
Adjustment Address
80, 81
Specified Value
L = 0.408
± 0.004 Vp-p
H = 0.748
± 0.004 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
80
Change the data and set the
voltage (L) to the specified
value.
voltage (L) to the specified
value.
3
A
80
Press PAUSE button.
4
A
81
Change the data and set the
voltage (H) to the specified
value.
voltage (H) to the specified
value.
5
A
81
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
0
01
00
4. VCO Adjustment (PK-064 Board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 7 of CN903 (HSY)
Measuring Instrument
Frequency counter
Adjustment Page
A
Adjustment Address
82 (NTSC)
83 (PAL)
83 (PAL)
Specified Value
T = 15734
± 30 Hz (NTSC)
T = 15625
± 30 Hz (PAL)
Menu setting:
1) VIDEO OUT of SET UP setting
1) VIDEO OUT of SET UP setting
.................................. NTSC (NTSC mode)
(This adjustment must be performed in NTSC mode, so don’t
set the menu setting to “PAL” )
set the menu setting to “PAL” )
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
13
(NTSC)
3
4
1D
82
(PAL)
Change the data and set the
4
A
82
frequency (f) to the
NTSC specified value.
NTSC specified value.
5
A
82
Press PAUSE button.
Change the data and set the
6
A
83
frequency (f) to the
PAL specified value.
PAL specified value.
7
A
83
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
4
F1
00
(NTSC)
2
4
1D
80
(PAL)
3
0
01
00
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