DCR-TRV738E, DCR-TRV740, DCR-TRV740E, DCR-TRV840 (serv.man4) - Sony Movie Service Manual (repair manual). Page 7

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— 9 —
DCR-TRV738E/TRV740/TRV740E/TRV840
Page
5-37
5-38
5-39
Before change
After change
  
: 
Added portion.  
: 
Changed portion.
3. RGB AMP Adjustment (PD-160 board)
Mode
VTR stop
Specified Value
NTSC 2.5 LCD:
A = 7.68 
±
 0.05V
NTSC 3.5 LCD:
A = 7.48 
±
 0.05V
PAL 2.5 LCD:
A = 7.62 
±
 0.05V
Note1:
NTSC model: DCR-TRV740/TRV840
PAL model: DCR-TRV740E
Note2:
The data of page: 0, address: 10 must be “00”.
3. RGB AMP Adjustment (PD-160 board)
Mode
VTR stop
Specified Value
NTSC 2.5 LCD:
A = 7.68 
±
 0.05V
NTSC 3.5 LCD:
A = 7.48 
±
 0.05V
PAL 2.5 LCD:(61k)
A = 7.62 
±
 0.05V
PAL 2.5 LCD:(123k)
A = 7.44 
±
 0.05V
Note:
Refer to “1-5-1. LCD type check” for the discrimination of the
LCD type. (Page 8)
5. Contrast Adjustment (PD-160 board)
Mode
VTR stop
Specified Value
NTSC 2.5 LCD:
A = 2.72 
±
 0.05V
NTSC 3.5 LCD:
A = 2.60 
±
 0.05V
PAL 2.5 LCD:
A = 3.19 
±
 0.05V
Note1:
NTSC model: DCR-TRV740/TRV840
PAL model: DCR-TRV740E
Note2:
The data of page: 0, address: 10 must be “00”.
5. Contrast Adjustment (PD-160 board)
Mode
VTR stop
Specified Value
NTSC 2.5 LCD:
A = 2.72 
±
 0.05V
NTSC 3.5 LCD:
A = 2.60 
±
 0.05V
PAL 2.5 LCD:(61k)
A = 2.71 
±
 0.05V
PAL 2.5 LCD:(123k)
A = 2.40 
±
 0.05V
Note:
Refer to “1-5-1. LCD type check” for the discrimination of the
LCD type. (Page 8)
8. White Balance Adjustment (PD-160 board)
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
67
Set the following data, and
press PAUSE button.
7E (NTSC 2.5 LCD)
7E (NTSC 3.5 LCD)
81 (PAL 2.5 LCD)
3
C
68
Set the following data, and
press PAUSE button.
6C (NTSC 2.5 LCD)
78 (NTSC 3.5 LCD)
6F (PAL 2.5 LCD)
4
C
68
Check that the LCD screen is
not colored. If not colored,
proceed to step 10.
8. White Balance Adjustment (PD-160 board)
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
67
Set the following data, and
press PAUSE button.
7E (NTSC 2.5 LCD)
7E (NTSC 3.5 LCD)
81 (PAL 2.5 LCD (61k))
82 (PAL 2.5 LCD (123k))
3
C
68
Set the following data, and
press PAUSE button.
6C (NTSC 2.5 LCD)
78 (NTSC 3.5 LCD)
6F (PAL 2.5 LCD (61k))
6B (PAL 2.5 LCD (123k))
4
C
68
Check that the LCD screen is
not colored. If not colored,
proceed to step 10.
Note3:
Refer to “1-5-1. LCD type check” for the discrimination of
the LCD type. (Page 8)

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