Sony CCD-TRV66E / CCD-TRV77E Service Manual ▷ View online
5-23
1-4-6. Vertical Amplitude Adjustment (VF-129 board)
Mode
Playback
Signal
Alignment tape :
For checking operation
For checking operation
(WR5-5CSP)
Monoscope section
Adjusting Element
RV903
Specified Value
10 ± 3%
Adjusting method:
1)
1)
Adjust RV903 so that the vertical direction over scan becomes
10 ± 3% (Top and bottom totals).
10 ± 3% (Top and bottom totals).
1-4-7. Brightness Adjustment (VF-129 board)
Mode
Playback
Signal
Alignment tape :
For checking operation
(WR5-5CSP)
Monoscope section
For checking operation
(WR5-5CSP)
Monoscope section
Adjusting Element
RV904
Adjusting method:
1)
1)
Rotate RV904, and adjust so that the bright/dark sections of
gray scale are displayed correctly. (The bright section should
be unsatisfactory till the cross hatch appears vague in the
monoscope circle. The dark section should be unsatisfactory
till the darkest section of the gray scale cannot be differentiate.)
gray scale are displayed correctly. (The bright section should
be unsatisfactory till the cross hatch appears vague in the
monoscope circle. The dark section should be unsatisfactory
till the darkest section of the gray scale cannot be differentiate.)
1-4-8. Horizontal Amplitude, Vertical Amplitude,
Focus Check
“1-4-5. Horizontal Amplitude Adjustment” and “1-4-6. Vertical
Amplitude Adjustment” should be both satisfy the specified values.
If not, perform the adjustments from the beginning again. In this
case, perform “1-4-7. Brightness Adjustment” again.
Moreover, check the focus, and if it found to be vague, perform “1-
4-3. Focus Adjustment” and “1-4-4. Aberration Adjustment”.
Amplitude Adjustment” should be both satisfy the specified values.
If not, perform the adjustments from the beginning again. In this
case, perform “1-4-7. Brightness Adjustment” again.
Moreover, check the focus, and if it found to be vague, perform “1-
4-3. Focus Adjustment” and “1-4-4. Aberration Adjustment”.
100%
16.5%
16.5%
5%
5%
Fig. 5-1-16.
5-24
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.
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.
caused by static electricity.
Note 3:
Set the LCD BRIGHT to the center.
Set the LCD COLOR (Menu display) to the center.
Set the LCD COLOR (Menu display) to the center.
[Adjusting connector]
Most of the measuring points for adjusting the LCD display are
concentrated in the following connector.
concentrated in the following connector.
CN5501 of the PD-105 board
Connect the Measuring Instruments via the multi CPC jig (J-6082-
311-A).
The following table shows the Pin No. and signal name of the
connector.
311-A).
The following table shows the Pin No. and signal name of the
connector.
1. LCD Initial Data Input
Mode
VTR stop
Signal
Arbitrary
Adjustment Page
E
Adjustment Address
AD to AF, B3 to BC, C2 to C4,
D1 to DF
D1 to DF
Adjusting method:
1)
1)
Select page: 0, address:01, and set data: 01.
2)
Select page: E, and input the data in the following table.
Note:
To write in the non-volatile memory (EEPROM), press the
PAUSE button of the adjustment remote commander each time
to set the data.
PAUSE button of the adjustment remote commander each time
to set the data.
3)
Select page: 0, address:01, and set data: 00.
Address
AD
AE
AF
B3
B4
B5
B6
B7
B8
B9
BA
BB
BC
C2
C3
C4
D1
D2
D3
D4
D5
D6
D7
D8
D9
DA
DB
DC
DD
DE
DF
Data
67
91
78
3F
C8
1F
1F
00
00
F0
4E
08
00
80
B3
E0
84
77
98
7B
DC
80
89
70
80
80
77
80
52
99
99
Remark
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
VCO adj.
Fixed data
Fixed data
Bright adj.
Color adj.
White balance adj.
White balance adj.
Contrast adj.
D range adj.
V-COM level adj.
VCO adj.
V-COM adj.
Fixed data
Color adj.
Fixed data
Fixed data
Fixed data
Fixed data
Pin No.
1
3
5
7
9
Signal Name
VB
VG
VR
SYNC
GND
Pin No.
2
4
6
8
10
Signal Name
VCO VOLTAGE.
PANEL COM
N.C.
H START
GND
5-25
2. VCO Adjustment (PD-105 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 2 of CN5501 (VCO VOLTAGE)
Measuring Instrument
Oscilloscope (DC range)
Adjustment Page
E
Adjustment Address
C2, D8
Specified Value
A = 1.70
+0.03
V
–0.05
Adjusting method:
1)
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 2, address: 01, set data: 55, and press the PAUSE
button of the adjustment remote commander.
button of the adjustment remote commander.
3)
Select page: 6, address: 7D, and set data: 00.
4)
Select page: E, address: D8, change the data and set the VCO
VOLTAGE (A) to the specified value.
VOLTAGE (A) to the specified value.
5)
Press the PAUSE button.
6)
Select page: E, address: D8 and read the data (D
D8
).
7)
Convert D
D8
to decimal notation, and obtain D
D8
'. (Refer to
Table 5-4-1. “Hexadecimal-decimal conversion table” of “5-4.
Service Mode”.)
Service Mode”.)
8)
Calculate D
C2
' using following equation (decimal calculation),
convert it to a hexadecimal number, and input to page : E,
address : C2.
address : C2.
D
C2
' = D
D8
' – 27
9)
Press the PAUSE button.
10) Select page: 2, address: 01, set data: 00, and press the PAUSE
button.
11) Select page: 0, address: 01, and set data: 00.
3. D range Adjustment (PD-105 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).
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 3 of CN5501 (VG)
External trigger : Pin 4 of CN5501
(PANEL COM)
External trigger : Pin 4 of CN5501
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
E
Adjustment Address
D6
Specified Value
A = 3.06 ± 0.05V
Note :
Press the DISPLAY button and erase the screen indictors on the
LCD screen.
LCD screen.
Adjusting method:
1)
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 2, address: 01, set data: 55, and press the PAUSE
button of the adjustment remote commander.
button of the adjustment remote commander.
3)
Select page: 6, address: 7D, and set data: 00.
4)
Select page: E, address: D6, change the data and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
5)
Press the PAUSE button.
6)
Select page: 2, address: 01, set data: 00, and press the PAUSE
button.
button.
7)
Select page: 0, address: 01, and set data: 00.
A
2H
Pedestal
Pedestal
H
A
GND level
(0Vdc)
(0Vdc)
Fig. 5-1-17.
Fig. 5-1-18.
5-26
4. Bright Adjustment (PD-105 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 3 of CN5501 (VG)
External trigger : Pin 4 of CN5501
(PANEL COM)
External trigger : Pin 4 of CN5501
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
E
Adjustment Address
D1
Specified Value
A = 1.34 ± 0.05V
Adjusting method:
1)
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 2, address: 01, set data: 55, and press the PAUSE
button of the adjustment remote commander.
button of the adjustment remote commander.
3)
Select page: 6, address: 7D, and set data: 40.
4)
Select page: E, address: D1, change the data and set the voltage
(A) between the pedestal and white to the specified value. (The
data of address: D1 should be “41” to “BF”.)
(A) between the pedestal and white to the specified value. (The
data of address: D1 should be “41” to “BF”.)
5)
Press the PAUSE button.
6)
Select page: 2, address: 01, set data: 00, and press the PAUSE
button.
button.
7)
Select page: 6, address: 7D, and set data: 00.
8)
Select page: 0, address: 01, and set data: 00.
5. Contrast Adjustment (PD-105 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 3 of CN5501 (VG)
External trigger : Pin 4 of CN5501
(PANEL COM)
External trigger : Pin 4 of CN5501
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
E
Adjustment Address
D5
Specified Value
A = 2.60 ± 0.07V
Adjusting method:
1)
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 2, address: 01, set data: 55, and press the PAUSE
button of the adjustment remote commander.
button of the adjustment remote commander.
3)
Select page: 6, address: 7D, and set data: 00.
4)
Select page: E, address: D5, change the data and set the voltage
(A) between the pedestal (0 IRE) and 100 IRE to the specified
value.
(A) between the pedestal (0 IRE) and 100 IRE to the specified
value.
5)
Press the PAUSE button.
6)
Select page: 2, address: 01, set data: 00, and press the PAUSE
button.
button.
7)
Select page: 0, address: 01, and set data: 00.
A
2H
100 IRE
0 IRE
Pedestal
A
2H
White
Fig. 5-1-19.
Fig. 5-1-20.
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