Vco Adjustment (Pd-217 Board); Bright Adjustment (Pd-217 Board) - Sony DCR-VX2100 Adjustment Manual

DCR-VX2100/VX2100E

1. VCO Adjustment (PD-217 board)

Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note1: NTSC: DCR-VX2100
PAL: DCR-VX2100E
Adjusting method:
Order Page Address Data
1 0 01
2 D A2
3 D A2
4 D A2
5
6
7
8 D A3 D
9 0 01
Note2: Refer to "Table 6-4-1. Hexadecimal-decimal Conversion Table".
VTR stop
No signal
Pin 5 of CN2105 (HSY)
Frequency counter
D
A2, A3
f = 15734 ± 30Hz (NTSC)
f = 15625 ± 30Hz (PAL)
Procedure
01 Set the data.
Change the data and set the
VCO frequency (f) to the
specified value.
Press PAUSE button.
Read the data, and this data is
named D .
A2
Convert D to decimal notation,
A2
and obtain D '. (Note2)
A2
Calculate D ' using following
A3
equations (Decimal calculation)
NTSC model:
When D ' 234
A2
D ' = D ' + 21
A3 A2
When D ' > 234
A2
D ' = 255
A3
PAL model:
When D ' 21
A2
D ' = D ' – 21
A3 A2
When D ' < 21
A2
D ' = 00
A3
Convert D ' to a hexadecimal
A3
number, and obtain D . (Note2)
A3
Set the data, and press PAUSE
A3
button.
00 Set the data.

2. Bright Adjustment (PD-217 board)

Set the D range of the RGB decoder used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
Order Page Address Data
1 0 01
2 D A5
3 D A5
4 0 01
A
Pedestal
6-32
VTR stop
No signal
Pin 1 of CN2105 (VG)
Oscilloscope
D
A5
A = 6.80 ± 0.05V
Procedure
01 Set the data.
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
Press PAUSE button.
00 Set the data.
Pedestal
2H
Fig. 6-1-21.