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6-3. DM-89 Board Replacement
(7) OXIDE C adjustment
Playback the 75% color-bar signal portion (0:00 to 3:00) of the alignment tape CR5-2A or CR5-2A
PS, and perform the adjustment. (DNW-A22: CR5-2A, DNW-A22P: CR5-2A PS)
Adjustment point: 1RV407/DM-89(C-5)
C = 400 ± 40 mV p-p
Specification:
(8) Stop the playback of the alignment tape CR5-2A/CR5-2A PS.
(9) Change the connection of the oscilloscope as follows:
CH-1: TP3/DM-89(E-1), GND: E702/DM-89(D-1)
Trigger: TP4/DM-89(E-1), GND: E702/DM-89(D-1)
(10) OXIDE Y adjustment
Playback the 75% color-bar signal portion (0:00 to 3:00) of the alignment tape CR5-2A or CR5-2A
PS, and perform the adjustment. (DNW-A22: CR5-2A, DNW-A22P: CR5-2A PS)
Adjustment point: 1RV212/DM-89(G-6)
D = 400 ± 40 mV p-p
Specification:
(11) Stop the playback of the alignment tape CR5-2A/
CR5-2A PS or eject it.
n
It is not necessary to eject the alignment tape when
perform subsequent "6. OMC Carrier Balance
Adjustment".
6-42
C
D
A
B
RV704
D902
ON
E303
S901
OFF
E901
RV702
RV701
RV301
RV302
RV303
RV304
S301
TEST
E302
TEST
NOR
TP303
TP302
TP300
E301
C
D
DM-89
E
OFF
ON
RV703
TP8
TP6
S501
TP2
TP1
RV503
E702
TP7
TP5
TP4 TP3
TP705
TP505
TP704
TP503
TP504
E701
TP502
TP703
E501
TP702
RV501
RV502
TP701
RV507
RV506
TP500
TP305
TP700
TP306
TP506
TP208
RV401
RV305
RV102
RV104
RV402
RV306
RV407
S302
RV406
RV307
RV101
RV103
NOR
RV308
E102
TP103
TP304
RV405
S101
TP102
TEST
NOR
TP403
E103
TP404
TP100
E101
DM-89 Board (Side A)
F
G
RV504
E105
A No.
LOTNO,
S NO,
1
2
3
TP501
TP105
TP106
4
RV105
RV106
RV107
RV202
5
RV201
RV108
E104
TP104
S102
TEST
NOR
RV212
RV211
6
TP202
RV205
TP204
TP203
7
E902
DNW-A22/A22P
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