Technical data

Chapter 4

Troubleshooting

This chapter provides the following:

• A description of the self-diagnostic and troubleshooting capabilities designed into the

TSZ07 Tape Drive

• An explanation of how tape processing errors and tape drive faults are reported and how

to use the diagnostic aids (referred to as service aids) resident in the TSZ07 ﬁrmware

• A list of error recovery procedures

External diagnostics should be run on all systems where the TSZ07 is connected to a

KZQSA. For information on running MicroVAX Diagnostic Monitor (MDM) and other external

diagnostics, refer to the TSZ07 Tape Drive Installation Manual.

4.1 Power-on Diagnostics

The power-on diagnostics are ROM-resident tests that verify the integrity of the TSZ07

hardware and ﬁrmware at power-up. If the diagnostics detect a fault, a Fault Symptom

Code (FSC) appears in the alphanumeric display (display) located on the control panel.

The power-on diagnostics are initialized when power is applied to the drive using the AC

Power Switch or the ON/OFF Switch. When initialized, the power-on diagnostics begin by

illuminating the front panel indicators and display segments for several seconds. Then the

message TESTING ﬂashes in the display throughout the remainder of the tests. Once the

power-on diagnostics complete successfully, the UNLOAD indicator lights and the message

TESTPASS appears for several seconds in the display.

Normally, the power-on diagnostics are run with the front panel door closed. If the drive

is powered-on with the door open, the message DOOR AJAR appears. Pressing the LOAD

/REWIND and the DENSITY SELECT switches simultaneously, after the DOOR AJAR

message appears, allows the power-on diagnostics to be completed.

Troubleshooting 4–1