Sony DCR-TRV230 Service Manual page 237

LCD Type
LCD Type SH for TRV230/TRV330
1-5. LCD SYSTEM ADJUSTMENT
Note 1: The back light (fluorescent tube) is driven by a high voltage
AC power supply. Therefore, do not touch the back light holder
to avoid electrical shock.
Note 2: When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
Note 3: Set the LCD BRIGHT (Menu display) to the center.
Set the LCD COLOR (Menu display) to the center.
Note 4: PD-138 board: DCR-TRV230/TRV330
PD-139 board: DCR-TRV530
[LCD Type Check]
By measuring the resistor value between Pin 6 of CN5502
and GND, the type of LCD can be discriminated.
Resistor value
1.0kΩ
LCD type
2.5 LCD TYPE SH
(61k)
PD board PD-138
5-29
DCR-
TRV230/TRV330
[Adjusting Procedure]
DCR-TRV230/TRV330:
1. VCO adjustment
2. RGB AMP adjustment
3. Contrast adjustment
4. COM AMP adjustment
5. V-COM adjustment
6. White balance adjustment
DCR-TRV530:
1. VCO adjustment
2. RGB AMP adjustment
3. Black limit adjustment
4. Contrast adjustment
5. Center level adjustment
6. V-COM adjustment
7. White balance adjustment
47kΩ
3.5 LCD TYPE SO
(123k)
PD-139
TRV530
Table 5-1-12.
: Added portion.
LCD Type SO for TRV230/TRV330
1-5. LCD SYSTEM ADJUSTMENT
Note 4: PD-138 board: DCR-TRV230/TRV330 (LCD TYPE SH)
PD-139 board: DCR-TRV230/TRV330 (LCD TYPE SO)
[LCD Type Check]
By measuring the resistor value between Pin 6 of CN5502
and GND, the type of LCD can be discriminated.
Resistor value
1.0kΩ
LCD type
2.5 LCD
TYPE SH (61k)
PD board PD-138
DCR-
TRV230/TRV330
[Adjusting Procedure]
LCD TYPE SH:
1. VCO adjustment
2. RGB AMP adjustment
3. Contrast adjustment
4. COM AMP adjustment
5. V-COM adjustment
6. White balance adjustment
LCD TYPE SO:
1. VCO adjustment
2. RGB AMP adjustment
3. Black limit adjustment
4. Contrast adjustment
5. Center level adjustment
6. V-COM adjustment
7. White balance adjustment Changed
— 6 —
: Changed portion.
DCR-TRV530 (LCD TYPE SO)
22kΩ 47kΩ
2.5 LCD 3.5 LCD
TYPE SO (61k) TYPE SO (123k)
PD-139 PD-139
TRV230/TRV330 TRV530
Table 5-1-12.