Video System Level Adjustment (When Using The Setup Menu); White Shading Adjustment - Sony HDC-900 Maintenance Manual

Adjustment Procedures
1. VA OUT R level adjustment
Measuring point : TP21/EX-738 board
Adjusting point : 1RV200/VA-196 board
A = 1000 ± 10 mV
Specification :
2. VA OUT G level adjustme→nt
Measuring point : TP13/EX-738 board
Adjusting point : 1RV201/VA-196 board
A = 1000 ± 10 mV
Specification :
3. VA OUT B level adjustment
Measuring point : TP5/EX-738 board
Adjusting point : 1RV202/VA-196 board
A = 1000 ± 10 mV
Specification :
A
200mV
Setting After Adjustment
. After the adjustment, return the switches to their original
settings.
6 5
A
VA
B
C
RV200
R
D
E
RV201
F
G
RV202
G
B
H
VA-196 board (A side)
HDC-900/950 MM
B 5us
W
L
4 3 2 1

6-5. Video System Level Adjustment (When using the Setup Menu)

6-5. Video System Level Adjustment
(When using the Setup Menu)
m
. This section describes the adjusting procedure using the
setup menu.
Refer to Section 6-6 when adjusting using MSU-700A/
750.
. Perform the following adjustments (Sections 6-5-1 to 6-
5-12) at the request of the customer.

6-5-1. White Shading Adjustment

Equipment: Waveform monitor (R, G, B)
Test Point: MONITOR OUT connector
Object: Full white pattern
Note
When performing the white shading adjustment, make sure
the following conditions are proper. If not, adjustment can
not be complete.
. White pattern is not uneven.
. Luminance is correctly adjusted.
. Iris and zoom control of the lens are correctly adjusted.
Preparations
. Menu setting:
MENU: PAINT
PAGE: SW STATUS
KNEE → OFF
ITEM:
. Shoot the fully occupied white area of the white pattern
on the underscanned monitor frame.
. Iris of the lens: A = 600 ± 20 mV (at F4 to F5.6)
(If a lens aperture is greater than F5.6, adjust the light
amounts with shutter.)
A
. Lens Focus: ∞
. Lens Extender/Shrinker: x2, x0.8 → OFF
6-4. VA-196 Board Adjustment
6-11 (E)