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Troubleshooting and Diagnostics
7936 and 7937
Table 8-2. List of DERROR/TERROR's (24 of 25)
NUMBER
(hex/dec)
B5/181
B7/I83
B8/I84
B9/I85
BA/I86
8-38
INTER-
FACE
HP-IB
HP-IB
HP-IB
HP-IB
HP-IB
ERROR
DESCRIPTION
READ
SECTOR
ADDRESS
FAULT.
(Fau 1 t;
FRU
=
controller).
The controll-
er sector address counter had
the wrong value during a disc
read.
READ
DMA
BUFFER
POINTER FAULT.
(Fau 1 t;
FRU
=
controller).
The
controller DMA RAM address
pointer had the wrong value at
completion of a segment of a
disc read.
WRITE
DMA
BUFFER
POINTER FAULT.
(Fault;
FRU
=
controller).
The
controller DMA RAM address
pointer had the wrong value at
completion of a segment of a
disc write.
SAMPLED
SERVO
GATE
(SSG).
TIMING
ERROR.
( Eve n t ;
F R U
=
s e rv
0) .
Sampled servo gate timing was
outside specified limits during
servo recalibration.
BAD
SERVO
MEASURE
ST A TUS. (
Eve n t ;
F R U
=
servo).
Servo status was bad
at
start
of
seek.
Position
measurement
for
seek
not
done.
SUSPECT
ASSEMBLY
1. Controller PCA-A6
1. Controller PCA-A6
1. Controller PCA-A6
1. Servo PCA-AI
1. Servo PCA-AI
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