Sony DSC-F717 - VCO Adjustment (PD-179 Board); D Range Adjustment (PD-179 Board)

DSC-F717
6-40
3. VCO Adjustment (PD-179 Board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode PLAY
Signal Arbitrary
Measurement Point Pin 7 of CN305 on FR-194
board (PANEL_HSY)
Measuring Instrument Frequency counter
Adjustment Page A
Adjustment Address 82 (NTSC mode)
83 (PAL mode)
Specified Value f = 15734 ± 100 Hz (NTSC mode)
f = 15625 ± 100 Hz (PAL mode)
Menu 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” )
Adjusting method:
Order Page Address Data Procedure
1 0 01 01
2 A 02 13 Press PAUSE button.
34 F113
4A 82
Change the data and set the
frequency (f) to the NTSC
specified value.
5 A 82 Press PAUSE button.
64 1D82
7A 83
Change the data and set the
frequency (f) to the PAL
specified value.
8 A 83 Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data Procedure
1 A 02 00 Press PAUSE button.
24 F100
34 1D80
4 0 01 00
4. D Range Adjustment (PD-179 Board)
Set the D Range of the RGB decoder for driving the LCD to the
specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode PLAY
Signal Arbitrary
Measurement Point Pin 9 of CN305 on FR-194
board (PANEL_VG)
External trigger: Pin 8 of
CN305 on FR-194 board
(PANEL_COM)
Measuring Instrument Oscilloscope
Adjustment Page A
Adjustment Address 85
Specified Value A = 2.95 ± 0.05 Vp-p
Adjusting method:
Order Page Address Data Procedure
1 0 01 01
2 A 02 13 Press PAUSE button.
34 F103
4A 85
Change the data and set the
voltage (A) to the specified
value.
5 A 85 Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data Procedure
1 A 02 00 Press PAUSE button.
24 F100
3 0 01 00
A
2H
Pedestal
Pedestal
A: Pedestal level difference between 1H period and
previous 1H period.
Fig. 6-1-19