Sony Betacam SX DNW-A22, Руководство по обслуживанию

Страница: 107 / 286

4-31
DNW-A22/A22P
4-2. TAPE Maintenance Mode (M0)
4-2-4. BETACAM PB CHECK Mode (C3)
To finish the check
(5) Stop the tape playback operation and eject the cassette.
(6) Press the MENU button once.
. The white square disappears.
The time data display area displays the former “C30-
CHANNEL COND”.
(7) To exit the menu, press the MENU button once again.
Example of display and operation
(1) 0
[SET]
(2)
(3)
Insert a recorded tape
[PLAY]
0
0
(4)
(5)
(6)
Check
[STOP]
[EJECT]
[MENU]
0
0
0
0
BETACAM PB CHECK MODE
C30:CHANNEL CONDITION
Grn Yel Red
ENV Y
ENV C
BETACAM PB CHECK MODE
C30:CHANNEL CONDITION
Grn Yel Red
ENV Y
ENV C
BETACAM PB CHECK MODE
C30:CHANNEL CONDITION
Grn Yel Red
ENV Y >>>
ENV C >>>
For Condition NG (C30)
Recheck according to the procedures below.
(1) Change the playback portion on the tape.
(2) Recheck in the menu C30.
When no abnormality is found, the recheck is completed.
(3) Clean the drum for five seconds using a cleaning tape
according to Section 5-2-1.
(4) Recheck in the menu C30.
When no abnormality is found, the recheck is completed.
(5) Clean the drum for fifteen seconds using the cleaning
tape again.
(6) Recheck in the menu C30.
When no abnormality is found, the recheck is completed.
(7) Clean the drum (video heads) with a cleaning cloth
according to Sections 5-2-2 and 5-2-3
(8) Recheck in the menu C30.
When no abnormality is found, the recheck is completed.
If the condition is not improved in the way mentioned
above, the possible cause below are considered.
Abnormality on PB tape
.
The tape is damaged.
. The tape cannot be recorded properly.
Abnormality in this unit
.
Analog Betacam PB system adjustment defect
8 Readjust the analog Betacam PB system (A3 :
BETACAM PB ADJUST)
Perform the same adjustments at the replacement of
the DM-89 board. (Refer to Section 6-3.)
. In the tape transport system, adjustment defect or
component part installation defect
8 Readjust the tape transport system or reinstall the part.
(Refer to the maintenance manual part 2, volume-1.)
. Worm PB head
8 After checking the hours meter (H02 : DRUM
RUNNING HOURS), replace the upper drum
assembly as required.
(Refer to the maintenance manual part 2, volume-1.)
. Drum assembly defect
. EQ-56 board defect