HP 7936 Support Manual page 140

Troubleshooting and Diagnostics
7936 and 7937
Table 8-2. List of DERROR/TERROR's
(4
of 25)
8-18
NUMBER
(hex/dec)
19/25
lA/26
IB/27
ID/29
IF/31
INTER-
FACE
HP-IB
HP-IB
HP-IB
HP-IB
HP-IB
ERROR
DESCRIPTION
SER VO RECALIBRA TE
TIMEOUT. (Event;
FRU
=
servo) .
The controller
watchdog timer monitoring a
servo recalibration command
expired prior to response from
the servo system.
SERVO RECALIBRATE
FAULT. (Event; FRU
=
servo). Too many error
events occurred during at-
tempts to recalibrate the servo,
or insufficient channel time
was available to start servo
recalibration.
SERVO RESYNC TIMEOUT.
(Fault; FRU
=
servo).
The servo system did not
respond after attempting to
resynchronize the ser-
vo/controller communication
interface.
DATA PATH CONTROL
INTERFACE FAULT.
(Fault; FRU
=
read/wr i te) .
During diag-
nostic functional testing, the
data path control bus interface
between the read/write and
controller showed a data
miscompare.
WRITE FAILURE
(Fau 1
t;
FRU
=
read/write).
During diagnostic functional
testing, a disc write was not
successfully completed on a
reserved self test data track.
SUSPECT
ASSEMBLY
1. Servo PCA-AI
2. Read/Write PCA-A2
3. HDA A3
1. Shipping Latch
2. Servo PCA-AI
3. Read/write PCA-A2
4.
HDA A3
1. Servo PCA-A I
2. Controller PCA-A6
1. Read/Write PCA-A2
2. Controller PCA-A6
1. Read/Write PCA-A2
2. Controller PCA-A6
3. HDA A3