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Page Title:
Table 5-1. Troubleshooting-continued |
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 TM 11-6625-3024-14/EE641-AC-MMA-011/E154 SYSEX/TO 33AA50-5-1-1
Table 5-1. Troubleshooting (Continued)
Symptom
Remedy
Probable Cause
12. Insert error not
Error insert circuit.
Replace Circuit Card 6.
functional.
Errors may only be
inserted while data is
being written on tape.
13. Constant read
Data written or
Replace Circuit Card 6.
errors.
recovered incorrectly.
Note
Attempt to write data
all zero with the Parity
bit set to Pattern.
Then attempt All Pattern
to confirm fault.
14. No sync pulse.
Bad sync driver.
Replace Circuit Card 6.
15. Unit does not
Replace Circuit Card 6.
Bad start circuit.
respond to
Input to EXT. START
Motion Control
connector must be
commands.
open or greater than
2.25V. The processor
will wait for this
condition in Block Mode.
16. Hard errors greater
Replace Circuit Card 6.
Error flip-flop circuit.
than Soft errors.
Note
LRC errors will allow
this condition.
17. Errors will not reset.
Bad indicator circuits.
Replace Circuit Card 6.
18. Blower fan does
Attached blower
a. Blower connector
not operate.
is disconnected.
connector (See Figure
Replace blower (see
b. Faulty blower.
Replace main fuse
19. No power to
a. Main fuse (1A1A3F1)
(See paragraph 5-23.)
Exerciser circuits.
is blown.
b. Defective power
Replace power supply.
supply.
5-4
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