Sony CCD-TR618 Service Manual page 231

CCD-TR618/TR618E/TR718E/TR728E/TR818/TRV49/TRV49E/TRV58/
TRV58E/TRV59E/TRV68/TRV78/TRV78E/TRV88/TRV98/TRV98E
SECTION 5. ADJUSTMENTS
5-1. CAMERA SECTION ADJUSTMENT
Page
1-6. LCD SYSTEM ADJUSTMENT
(CCD-TRV49/TRV49E/TRV58/TRV58E/
TRV59E/TRV68/TRV78/TRV78E/TRV88/
TRV98/TRV98E)
1. LCD Type Check
By measuring the resistor value between Pin 6 of CN5502 and
GND, the type of LCD can be discriminated.
Resistor
5-30
value
1.0k 2.5 LCD TYPE S (61k)
4.7k 3.0 LCD TYPE S (123k)
5.6k 3.5 LCD TYPE S (123k)
4. Contrast Adjustment (PD-131 board)
Adjustment Address
Specified Value
5. COM AMP Adjustment (PD-131 board)
5-32
Adjustment Address
Specified Value
Before change
LCD type CCD-
TRV49,TRV49E,TRV58,
TRV58E,TRV59E,
TRV68,TRV78,TRV78E
TRV88
TRV98,TRV98E
Table. 5-1-9.
ED
2.5 LCD TYPE S:
A = 3.55 ± 0.07V
3.0/3.5 LCD TYPE S:
A = 3.35 ± 0.07V
ED
2.5 LCD TYPE S:
A = 6.30 ± 0.05V (NTSC)
A = 6.10 ± 0.05V (PAL)
3.0 LCD TYPE S:
A = 6.00 ± 0.05V (NTSC)
3.5 LCD TYPE S:
A = 5.90 ± 0.05V (NTSC)
A = 6.00 ± 0.05V (PAL)
1-6. LCD SYSTEM ADJUSTMENT
(CCD-TRV49/TRV49E/TRV58/TRV58E/
TRV59E/TRV68/TRV78/TRV78E/TRV88/
TRV98/TRV98E)
1. LCD Type Check
By measuring the resistor value between Pin 6 of CN5502 and
GND, the type of LCD can be discriminated.
Resistor
LCD type
value
1.0k 2.5 LCD TYPE S (61k)
1.5k 2.5 LCD TYPE C (61k)
4.7k 3.0 LCD TYPE S (123k)
5.6k 3.5 LCD TYPE S (123k)
4. Contrast Adjustment (PD-131 board)
Adjustment Address
Specified Value
5. COM AMP Adjustment (PD-131 board)
Adjustment Address
Specified Value
— 2 —
: Added portion.
After change
CCD-
TRV49,TRV49E,TRV58,
TRV58E,TRV59E,
TRV68,TRV78,TRV78E
TRV88
TRV98,TRV98E
Table. 5-1-9.
ED
2.5 LCD TYPE S:
A = 3.55 ± 0.07V
2.5 LCD TYPE C:
A = 3.00 ± 0.07V
3.0/3.5 LCD TYPE S:
A = 3.35 ± 0.07V
ED
2.5 LCD TYPE S:
A = 6.30 ± 0.05V (NTSC)
A = 6.10 ± 0.05V (PAL)
2.5 LCD TYPE C:
A = 5.09 ± 0.05V (NTSC)
A = 5.20 ± 0.05V (PAL)
3.0 LCD TYPE S:
A = 6.00 ± 0.05V (NTSC)
3.5 LCD TYPE S:
A = 5.90 ± 0.05V (NTSC)
A = 6.00 ± 0.05V (PAL)