Vco Adjustment (Pd-92/93 Board); D Range Adjustment (Pd-92/93 Board) - Sony Handycam CCD-TRV3E Service Manual

2. VCO Adjustment (PD-92/93 board)

Set the VCO freerun frequency. If deviated, the LCD screen will be
blurred.
Mode VTR stop
Signal No signal
Pin 2 of CN5501/4501 (VCO
Measurement point
VOLTAGE) of PD-92/93 board
Measuring instrument Oscilloscope
Adjustment page E
Adjustment address D6 (NTSC)
D6, BF (PAL)
A = 2.75 ± 0.02V
Specified value
(LCD TYPE S model)
A = 1.70 ± 0.02V
(LCD TYPE C model)
Note1: NTSC model: CCD-TRV75/TRV75PK/TRV715
PAL model: CCD-TRV3E/TRV13E/TRV23E/TRV45E/
TRV55E/TRV65E/TRV69E
Note2 : LCD TYPE S model : CCD-TRV23E/TRV45E/
LCD TYPE C model : CCD-TRV3E/TRV13E
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 55, and press the PAUSE
button of the adjusting remote commander.
3) Select page: 2, address: 7D, and set data: 00.
4) Select page: E, address: D6, change the data and set the VCO
VOLTAGE (A) to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
7) Only for PAL model, select page: E, address: D6, and read the
data (D ).
D6
8) Only for PAL model, calculate the adjustment data
(hexadecimal) from the following equations (hexadecimal
calculation), and input to address: BF. (Refer to Table 5-1-2.
Hexadecimal-Decimal conversion Table.)
CCD-TRV23E/TRV65E/TRV69E :
D = D
BF D6
CCD-TRV45E/TRV55E :
When D 10
D6
D = D
BF
When D < 10
D6
D = 00
BF
CCD-TRV3E/TRV13E :
When D 55
D6
D = D
BF
When D < 55
D6
D = 00
BF
Note2: After setting data, be sure to press the PAUSE button.
9) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
10) Select page: 0, address: 01, and set data: 00.
H
A
Fig. 5-1-18.
TRV55E/TRV65E/TRV69E/
TRV75/TRV75PK/TRV715
- 10
D6
- 55
D6
GND level
(0 Vdc)

3. D range Adjustment (PD-92/93 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
Note1 : Press the DISPLAY button and erase the screen indictors
on the LCD screen.
Note2 : LCD TYPE S model : CCD-TRV23E/TRV45E/
LCD TYPE C model : CCD-TRV3E/TRV13E
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 55, and press the PAUSE
button of the adjusting remote commander.
3) Select page: 2, address: 7D, and set data: 00.
4) Select page: E, address: D4, change the data and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
7) Select page: 0, address: 01, and set data: 00.
2H
5-27
VTR stop
No signal
Pin 3 of CN5501/4501 (VG) of PD-
92/93 board
External trigger : Pin 4 of CN5501/
CN4501 (PANEL COM)
Oscilloscope
E
D4
A = 3.62 ± 0.05V
(LCD TYPE S model)
A = 2.98 ±0.05V
(LCD TYPE C model)
TRV55E/TRV65E/TRV69E/
TRV75/TRV75PK/TRV715
Fig. 5-1-19.
A