White Balance Check; Angular Velocity Sensor Sensitivity Adjustment - Sony DCR-TRV8 Service Manual

14. White Balance Check

Subject Clear chart (Color reproduction
adjustment frame)
Filter Filter C14 for color temperature
correction
ND filter 1.0 and 0.4 and 0.1
Measurement Point Video output terminal
Measuring Instrument Vectorscope
Specified Value Fig. 5-1-12. A to C
Switch setting:
1) NIGHT SHOT .................................................................. OFF
Checking method:
1) Check that the lens is not covered with either filter.
2) Select page: 6, address: 01, set data: 0F, and press the PAUSE
button of the adjustment remote commander.
3) Check that the center of the white luminance point is within
the circle shown Fig. 5-1-12. (A).
4) Select page: 6, address: 01, set data: 23, and press the PAUSE
button.
5) Place the C14 filter on the lens.
6) Check that the center of the white luminance point settles in
the circle shown Fig. 5-1-12. (B).
7) Remove the C14 filter, and place the ND filter 1.5 (1.0 + 0.4 +
0.1) on the lens.
8) Check that the white luminance point stopped moving, and then
remove the ND filter 1.5.
9) Check that the center of the white luminance point settles within
the circle shown Fig. 5-1-12. (C).
Processing after Completing Adjustments:
1) Select page: 6, address: 01, set data: 00, and press the PAUSE
button.
2mm
Fig. 5-1-12. (A)
1.5mm
3mm
Fig. 5-1-12. (B)
3mm
1.5mm
Fig. 5-1-12. (C)
R-Y 2mm
B-Y
R-Y
B-Y
3mm
R-Y
3mm
3.5mm
B-Y

15. Angular Velocity Sensor Sensitivity Adjustment

• This adjustment is performed only when replacing the angular
velocity sensor.
Although this adjustment need not be performed when the circuit
is damaged, etc., check the operations.
• Note down the sensitivity displayed on the angular velocity sensor
of the repair parts. At this time, note down also to which board it
was attached to.
Be sure to check because if attached incorrectly, the screen will
vibrate up and down or left and right during hand-shake correction
operations.
Precautions on the Parts Replacement
There are two types of repair parts.
Type A: ENC03JA
Type B: ENC03JB
Replace the broken sensor with a same type sensor. If replace with
other type parts, the image will vibrate up and down or left and
right during hand-shake correction operations. After replacing, re-
adjust according to the adjusting method after replacement.
Precautions on Angular Velocity Sensor
The sensor incorporates a precision oscillator. Handle it with care
as if it dropped, the balance of the oscillator will be disrupted and
operations will not be performed properly.
Adjustment Page
Adjustment Address
Note 1: The sensor sensitivity of SE451 and SE450 of the JK-170 board is
written only on the repair parts.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Read the sensor sensitivity written on SE451 (PITCH sensor)
of the JK-170 board, and take this as S
3) Read the sensor sensitivity written on SE450 (YAW sensor) of
the JK-170 board, and take this as S
4) Calculate D ' and D
41
calculation).
NTSC model
D ' = 92 / S
41 451
D ' = 108 / S
42
PAL model
D ' = 148 / S
41
D ' = 128 / S
42
5) Convert D ' and D
41
and D . (Round off decimal points)
42
6) Select page: F, address: 41, set data: D
button of the adjustment remote commander.
7) Select page: F, address: 42, set data: D
button of the adjustment remote commander.
Processing after Completing Adjustments
1) Select page: 0, address: 01, and set data: 00.
2) Check that the steady shot operations have been performed
normally.
5-27
F
41, 42
.
451
.
450
' using the following equation (decimal
42
450
451
450
' into hexadecimal digits, to obtain D
42
, and press the PAUSE
41
, and press the PAUSE
42
41