CCD-TRV128 (serv.man2) - Sony Movie Service Manual (repair manual). Page 18

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CCD-TRV128
6-16
5. Optical Axis Adjustment
Correct a deviation of optical axis between the lens and the CCD
imager.
If deviated, the screen center will be shifted when the lens is
zoomed from TELE end to WIDE end.
Subject
Siemens Star
Measurement Point
Check operation on monitor TV
Measuring Instrument
Adjustment Page
F
Adjustment Address
5A
Note 1:
Check that the data of page: 0, address: 10 is “00”.
Note 2:
“Flange Back Adjustment” must be already finished.
Switch setting:
1) DIGITAL ZOOM (Menu setting) .................................... OFF
2) STEADYSHOT (Menu setting)
(CCD-TRV328/TRV428/TRV428E only) ....................... OFF
3) DISPLAY (Menu setting) ................................................ LCD
Preparation for adjustment:
1) Play a monoscope portion of the System Check tape (WR5-
5NSP (NTSC) or WR5-5CSP (PAL)).
2) Stick the optical axis deviation specification frame to the moni-
tor screen so that the center of monoscope coincides with the
center of specification frame.
3) Select the CAMERA mode.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: F, address: 5A, and set data: 00, then press the
PAUSE button on the adjusting remote commander.
3) Place the Siemens Star at 2 m position away from the lens.
4) Shoot the Siemens Star with the zoom at TELE end.
5) Change the lens direction so that the center of Siemens Star
coincides with the center of optical axis deviation specifica-
tion frame.
6) Shoot the Siemens Star with the zoom at WIDE end.
7) Check on the monitor TV which area the center of Siemens
Star exists of the optical axis deviation specification frame.
At this time, measure the amount of deviation “L1” (distance
from the center of Siemens Star to the center of optical axis
deviation specification frame).
8) From the following table, read correction data according to
the area.
0
180
90
67.5
22.5
337.5
292.5
247.5
202.5
157.5
112.5
8
4
5
7
1
6
2
3
270
Fig. 6-1-7
Area
1
2
3
4
5
6
7
8
Deviation Phase
22.6
° to 67.5°
67.6
° to 112.5°
112.6
° to 157.5°
157.6
° to 202.5°
202.6
° to 247.5°
247.6
° to 292.5°
292.6
° to 337.5°
337.6
° to 22.5°
Correction Data
01
02
03
04
05
06
07
08
9) Select page: F, address: 5A, and set correction data, then press
the PAUSE button on the adjusting remote commander.
10) Shoot the Siemens Star with the zoom at TELE end.
11) Change the lens direction so that the center of Siemens Star
coincides with the center of optical axis deviation specifica-
tion frame.
12) Shoot the Siemens Star with the zoom at WIDE end.
13) Measure the amount of deviation “L2” (distance from the cen-
ter of Siemens Star to the center of optical axis deviation speci-
fication frame).
14) Compare L1 and L2, and make sure that the L2 is smaller than
L1.
If large, select page: F, address: 5A, and set data: 00, then
press the PAUSE button on the adjusting remote commander.
Processing after completion of adjustment:
1) Select page: 0, address: 01, and set data: 00.
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