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Troubleshooting and Diagnostics
7936 and 7937
Table 8-2. List of DERROR/TERROR's (16 of 25)
NUMBER
(hex/dec)
84/132
85/133
86/134
88/136
89/137
8C/140
8-30
INTER-
FACE
HP-IB
HP-IB
HP-IB
HP-IB
HP-IB
HP-IB
ERROR
DESCRIPTION
SPINDLE FAULT.
(Fault;
F RU
=
se rvo). Disc spindle
is not spinning. or not spinning
at correct speed.
SECTOR WINDOW FAULT.
(Event;
FRU
=
servo).
The sector timing counter in
the controller timed out while
attempting to synchronize the
controller
with
the
sector
timing mark.
MISSING
HEADER
AVAILABLE. (Event;
FRU
=
controller).
The
Header Available status bit in
the controller
was
not set
during a position verify.
DATA
ERROR
QUEUE
FULL. (Event).
The queue
for the data error correction
was full, preventing the start of
a disc read. A rotational laten-
cy has been induced.
CONTROLLER
COUNTER
FAULT. (Event;
FRU
=
controller).
The diagnos-
tic
which
tests
the
sector
timing mark counter in the
controller failed.
DATA
ERROR
QUEUE
OVERFLOW. (Event).
A
disc read has been shut off be-
cause the data error buffer
queue has filled. A rotational
latency has been induced.
SUSPECT
ASSEMBLY
1. Servo PCA-A 1
1. Servo PCA-A I
1. Controller PCA-A6
Undetermined or parts
not required.
1. Controller PCA-A6
Undetermined or parts
not required.
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