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NUMBER
(hex/dec)
7D/125
7F/127
80/128
81/129
82/130
Troubleshooting and Diagnostics
7936 and 7937
Table 8-2. List of DERROR/TERROR's (15 of 25)
INTER-
FACE
HP-IB
HP-IB
HP-IB
HP-IB
HP-IB
ERROR
DESCRIPTION
TRACK
FOLLOW
IN
GUARD
BAND
FAULT.
{Event;
FRU
=
servo}.
Servo was unable to track fol-
low in the guard band area of
the disc, or no guard band was
detected.
GUARD
BAND
FAULT.
{Event;
FRU
=
servo}.
Servo system was unable to
complete guard band verifica-
tion, or no guard band was
detected.
SERVO
FAULT
STATUS
PENDING.
{Event;
FRU
=
s e
rv
0 } •
The requested seek
command was not processed
because of pending servo fault
status.
SECTOR
TIMING
HIGH.
(Event;
FRU
=
servo) •
The servo system reported the
Sector Timing Mark rate ex-
ceeded
the
upper
specified
limit while track following.
The read/write system was idle.
SECTOR
TIMING
LOW.
{Event;
FRU
=
servo}.
The servo system reported the
Sector Timing Mark rate ex-
ceeded
the
lower specified
limit while track following.
The read/write system was idle.
SUSPECT
ASSEMBLY
1. Servo PCA-AI
1. Servo PCA-AI
1. Servo PCA-Al
1. Servo PCA-AI
1. Servo PCA-AI
8-29
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