Tbc-23A Board - Sony DNW-A75 Maintenance Manual

1-10-4. TBC-23A Board

n
Never change the settings of the factory use switches.
A
ON
OFF
1 Y MUTE
2 C MUTE
3
4
Switches
Ref. No. Bit Name
S1 1 Y MUTE
2 C MUTE
3 —————
4 —————
5 COMB
6 TBC TEST
7 —————
8 VIDEO PHASE
S500 1 —————
|
4
DNW-A75/A75P
B C D TBC-23A
[1] [2] [3] [4] [5] [6] [7] [8] [1] [2] [3] [4]
S1 S500
5 COMB
6 TEST
7
8 VIDEO PHASE
LOTNO, S NO,
TBC-23A Board (Side A)
Description
OFF (OPEN) : Normal mode
ON (CLOSE) : Muting luminance signal
OFF (OPEN) : Normal mode
ON (CLOSE) : Muting color difference signal
Factory use
Factory use
Selection whether to select a comb filter when the
color difference signal has significant line crawl
which cannot be corrected by LCC or not.
OFF (OPEN) : Comb filter OFF
ON (CLOSE) : Comb filter ON
Selection whether to enable the TBC-23A and -24
boards self diagnostics or not.
OFF (OPEN) : Normal mode
ON (CLOSE) : Test (self diagnostics) mode
Factory use
Selection whether to use VIDEO PHASE VR or not.
OFF (OPEN) : VIDEO PHASE VR (RV202) disabled
ON (CLOSE) : VIDEO PHASE VR (RV202) enabled
Factory use
1-10. Switch and Shorting Plug Settings on PC Boards
E F G
RV202
1
2
A No.
3
4
5
6
7
n
Refer to Section 2-13 for remov-
ing/reattaching the plug-in board.
< Top View >
Factory setting
OFF (OPEN)
OFF (OPEN)
OFF (OPEN)
OFF (OPEN)
OFF (OPEN)
OFF (OPEN)
OFF (OPEN)
OFF (OPEN)
OFF (OPEN)
1-21