TM
11-5835-243-34/EE641-AA-MMl-010/E154
MTT/TO
31S3-4-110-1
EL4RD044
Figure 3-1. Tape Transport Test Setup.
Verify that tape transport is rewinding by listening
NOTE
Ignore all indicators except as specified in
or observing tape. Tape should be rewound to BOT
each step of test procedure. If tape trans-
as indicated when BOT indicators light.
port fails to perform as specified in
(3) Close tape transport door.
procedure, refer to tape transport
(4) Set the exerciser SELECT switches 2,3 and
troubleshooting chart (table 3-2). After a
4, in turn, depressing exerciser RUN FORWARD
fault has been isolated and repaired,
switch and then STOP switches for each address
repeat entire functional test.
selected. Ensure only one exerciser SELECT switch
is set at a time. For each SELECT switch verify:
3-10. Status and Control Test
SELECTED, READY and BOT indicators on
exerciser are off and that tape transport does not
a. ON/OFF Switch and PWR ON Indicator.
(1) Set ADDRESS switch on tape transport to
respond to a RUN command from the exerciser.
2.
(5) Repeat step (4) for each combination of
(2) Set tape transport power ON/OFF switch to
exerciser and tape transport SELECT and AD-
ON.
DRESS switch settings listed below, verify: the
(3) Observe that PWR ON indicator lights.
SELECTED, READY and BOT indicators on the
exerciser are off, the BOT Indicator on the tape
b. Select Acknowledge.
transport is on, and that the tape transport does not
NOTE
respond to a RUN command from the exerciser.
During test, tape transport access door
Exerciser SELECT
Tape Transport ADDRESS
may be open to provide access to AD-
1
2,3 and 4
DRESS switch provided door interlock
2
l,3and4
switch is hand engaged.
3
l,2and4
(1) Set tape transport ADDRESS switch to
4
l,2and3
c. Run/Stop Line.
position 1 and verify that SELECTED light on
(1) Remove tape cartridge. Mark end of capstan
exerciser is on.
shaft with strip of tape. Reinstall tape cartridge.
(2) If BOT indicators on tape transport and
Close and lock access door.
exerciser are not on, depress REWIND on exerciser.
3-3
