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6-3. DM-89 Board Replacement
(4) Change the connection of the oscilloscope as follows:
CH-1:
TP705/DM-89(D-2), GND: E701/DM-89(D-3)
For DNW-A22P only, perform steps (5) and (6).
(5) METAL C adjustment
Playback the 100% color-bar signal portion (14:00 to 17:00) of the alignment tape CR5-1B PS, and
perform the adjustment.
Adjustment point: 1RV703/DM-89(C-1)
B = 933 ± 10 mV
Specification:
(6) Eject the alignment tape CR5-1B PS.
(7) C adjustment for DNW-A22
OXIDE C adjustment for DNW-A22P
Playback the 75% color-bar signal portion of the alignment tape CR5-1B or CR5-2A PS, and perform
the adjustment.
[DNW-A22: CR5-1B (14:00 to 17:00), DNW-A22P: CR5-2A PS (0:00 to 3:00) ]
Adjustment point: 1RV704/DM-89(B-1)
C = 700 ± 10 mV
Specification:
(8) For DNW-A22, eject the alignment tape CR5-1B.
For DNW-A22P, stop the playback of the alignment tape CR5-2A PS.
6-50
B
C
DNW-A22/A22P
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