Sony Glasstron PLM-A35 Service Manual page 21

OPTICS BLOCK
• To adjust the optics block, connect a pattern generator as shown
below. (For details, see page 3-1)
Pattern generator
A/V IN jack (J402)
• Set the picture control standard. (See page 3-4)
• Make the following adjustment in the given order.
[V.COM R Adjustment]
• Make this adjustment through a visual check.
Note: Before this adjustment, the Contrast Adjustment must be finished.
Condition:
Input signal Monoscope signal
Measurement point Right LCD screen
Measuring equipment Visual check
Adjustment page D
Adjustment address 28
Adjustment Procedure:
(1) Set (or confirm) data: 01 to page: 1, address: 00.
(Cancel D page protect)
(2) On page: D, address: 28, change data with the PLAY and
STOP buttons and press the PAUSE button to write data so
that horizontal streaks do not wobble on the display when
looking into the right finder.
[V.COM L Adjustment]
• Make this adjustment through a visual check.
Note: Before this adjustment, the Contrast Adjustment must be finished.
Condition:
Input signal Monoscope signal
Measurement point Left LCD screen
Measuring equipment Visual check
Adjustment page D
Adjustment address 29
Adjustment Procedure:
(1) Set (or confirm) data: 01 to page: 1, address: 00.
(Cancel D page protect)
(2) On page: D, address: 29, change data with the PLAY and
STOP buttons and press the PAUSE button to write data so
that horizontal streaks do not wobble on the display when
looking into the left finder.
[LED Back Light Brightness Balance Adjustment]
• Make this adjustment through a visual check.
Condition:
Input signal
Measurement point
Measuring equipment
Adjustment page
Set
Adjustment address
Adjustment Procedure:
(1) Set (or confirm) data: 01 to page: 1, address: 00.
(2) Page: D, address: 2A (right) or 2B (left)
[White Balance Adjustment]
• Make this adjustment through a visual check.
Condition:
Input signal
Measurement point
Measuring equipment
Adjustment page
Adjustment address
Adjustment Procedure:
(1) Set (or confirm) data: 01 to page: 1, address: 00.
(2) Page: D, address: 15, 16
3-11
White: 100% signal
LCD screen
Visual check
D
2A (right) or 2B (left)
Change the address data of higher brightness with the PLAY
and STOP buttons and press the PAUSE button to write data
so that the brightness becomes same as the lower LED back
light brightness when looking into the left and right finders.
White: 50% signal
LCD screen
Visual check
D
15, 16
(Cancel D page protect)
Change data at these two addresses with the PLAY and STOP
buttons and press the PAUSE button to write data so that the
display achromatic gray gradation (not colored in blue or red)
when looking into the left and right finders.