DCR-TRV320, DCR-TRV320E, DCR-TRV320P, DCR-TRV420E, DCR-TRV520, DCR-TRV520E, DCR-TRV520P, DCR-TRV525, DCR-TRV620E, DCR-TRV720, DCR-TRV720E (serv.man2) - Sony Movie Service Manual (repair manual). Page 7

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DCR-TRV320/TRV320E/TRV320P/TRV420E/TRV520/TRV520E/TRV520P/TRV525
TRV620E/TRV720/TRV720E
1-5.
LCD ELECTRONIC VIEWFINDER SYSTEM
ADJUSTMENTS
(DCR-TRV320E: AEP, UK, EE, NE, RU/
TRV420E: AEP/TRV520E: AEP/TRV525/
TRV620E/TRV720/TRV720E)
2. EVF Initial Data Input (2)
(Service manual page 5-30)
]
6. Backlight Consumption Current Adjustment
(VF-141 board)
(Service manual page 5-32)
8) Select page: D, address: 9E, change the data, and set the votage
difference (A) between Pin 0 of CN1108 (EVF BL 4.6V) and
Pin 9 of CN1108 (EVF BL) to the specified value of NORMAL
mode.
(The data of address: 9D, should be “80” to “9F”)
]
]
Address
Data
Remark
COLOR
B/W
92
80
80
VCO adj.
93
70
70
VCO adj. (PAL model)
Fixed data (NTSC model)
94
26
26
Fixed data
95
A0
A0
RGB AMP adj.
96
0F
0F
Fixed data
97
80
80
White balance adj.
(COLOR LCD EVF model)
98
80
80
Fixed data
(B/W LCD EVF model)
99
30
30
Contrast adj.
9A
80
80
Fixed data
9B
90
90
9C
D0
D0
Backlight consumption
9D
10
10
current adj.
9E
90
90
9F
9F
98
Fixed data
B0
FC
FC
B2
FF
FF
]
;
;
(                                   )
1-6.
LCD SYSTEM ADJUSTMENTS
5. Contrast Adjustment (PD-117/118 board)
(Service manual page 5-35)
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).
Mode
Camera
Subject
Arbitrary
Measurement Point
Pin 3 of CN5502 (VG)
 External trigger : Pin 4 of CN5502
 (PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
AA
Specified Value
A=3.47 ± 0.07 Vp-p
(2.5 LCD TYPE S 61 k model)
A=3.34 ± 0.07 Vp-p
  2.5 LCD TYPE S 123 k model
  3/3.5/4 LCD TYPE S model
A=2.80 ± 0.07 Vp-p
(2.5 LCD TYPE C 61 k model)
A=3.00 ± 0.07 Vp-p
(3.5/4 LCD TYPE C model)
7. V-COM Adjustment (PD-117/118 board)
(Service manual page 5-36)
Set the DC bias of the common electrode drive signal of LCD to the
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.
Mode
Camera
Subject
Arbitrary
Measurement Point
Check on LCD display
Measuring Instrument
Adjustment Page
D
Adjustment Address
A4
Note:
Perform “RGB AMP Adjustment”, “Contrast Adjustment”
and “COM AMP Adjustment” before this adjustment.
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