Color Adjustment - Sony CCD-TRV32 Service Manual

20-7.

COLOR adjustment

Purpose : Adjusts color for standard level.
Adjustment Error : Color will be too much or too small.
Mode Playback
Signal Color bar signal (with chroma and
burst signals)
CN804 〈CN1804〉 pin 2 (VG)
Measurement point
Measuring equipment Oscilloscope
[External trigger : CN804 〈CN1804〉
pin 4 (HDB) 〈HSY〉]
Adjustment page F
Adjustment address D9
Type 1 : A=–0.20 ± 0.05Vp-p (PAL)
Specification
Type 2 : A=–0.25 ± 0.05Vp-p (PAL)
Type 3 : A=+0.12 ± 0.05Vp-p (NTSC)
Type 4 : A=+0.12 ± 0.05Vp-p (NTSC)
Type 4 : A=–0.20 ± 0.05Vp-p (PAL)
• Green levelwith reference to
white 100% (PAL)
• Green levelwith reference
to white 75% (NTSC)
Adjustment procedure:
Order Page Address
1 6 00
2 F D9
3
4 6 00
Note : To adjust the type 3, 4 machine, increase the data of page :
F, address : DD by 10h before starting adjustment.
To adjust the type 2 machine, decrease the data of page : F,
address : D8 by 12h before starting adjustment.
After adjustment is completed, return the data to the original
value. (Remove the effect of gamma.)
NTSC MODEL
White (75%)
2H
Data
01 After setting the data, press the PAUSE button. (Preparation)
Change data using the PLAY and STOP buttons until the amplitude (A) has the specified
value.
Press the PAUSE button.
00 After setting the data, press the PAUSE button. (End)
Green
A
LCD size
Type 1
2.5 inch (PAL only)
Type 2
Type 3 3.0 inch (NTSC)
Type 4 3.5 inch (NTSC/PAL)
No mark : Type 1, Type 4
〈 〉 : Type 2, Type 3
Note 1 : In the PAL models, perform the BURST CLEAN
adjustment first.
Note 2 : Set the BRIGHT control volume to their mechanical
center during adjustment.
Procedure
PAL MODEL
2H
6-39
LCD board
PD-74/SD-24
PD-75/SD-25
PD-77
PD-76
White (100%)
Green
A