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NUMBER
(hex/dec)
1/1
3/3
4/4
5/5
7/7
8/8
Troubleshooting and Diagnostics
7936 and 7937
Table 8-2. List of DERROR/TERROR's (1 of 25)
INTER-
FACE
HP-IB
HP-IB
HP-IB
HP-IB
HP-IB
HP-IB
ERROR
DESCRIPTION
END OF VOLUME. (Status
On ly ). The host attempted to
access data across a volume
boundary.
SERVO TIMEOUT. (Event;
FRU
=
servo).
The servo
system did not respond to a
command before the expira-
tion of the watchdog timer.
INV ALID
CONTROLLER
EVENT. (Fau 1 t;
FRU
=
controller).
An invalid
executive program event value
was detected during the execu-
tion of a controller program
task.
CHANNEL
TIMEOUT.
(Fault; FRU
=
controll-
e r ) .
The channel program
has aborted a transaction be-
cause the channel byte timer
has expired.
MARGINAL DATA. (Status
On ly ) .
The requested data
was read from the disc with
some difficulty (at least one
read retry).
UNRECOVERABLE
DATA.
(Fault).
Data
was
un-
recovera ble at the specified
block address.
SUSPECT
ASSEMBLY
I. Host hard/software 2.
Ca bling
3.
Controller
PCA-A6
1. Servo PCA-A
1
2. Controller PCA-A6
1. Controller PCA-A6
1. Controller PCA-A6
Refer
to
data
error
troubleshooting hints in
paragraph 8-19.
Refer
to
data
error
troubleshooting hints in
pa ragraph 8-19.
8-15
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