HP 7942 Service Manual page 10

CONTENTS (continued)
Cable Connections ..
Signal Distribution
Power Distribution
Signal Notation
Block Diagram ..
Power Supply A4
HDC PCA-AS ... .
Self Test .... .
Self-Test Controls
Tape Drive FAULT Indicator
Tape Drive BUSY Indicator
Disc Drive FAULT/ON LINE Indicator
Se
1
f T est Sw i t c h ....
Self-Test Display
DISPLAY RESULTS Switch
Internal Diagnostics
Sel f Test . . . . . . . . . . . .
Self-Test Subtests
Self-Test Error Reporting
Fault/On Line Indicator
Self-Test Display ... .
Request Status ..... .
Request Status Example
Run Time Error and Fault Reporting
External Exerciser ........ .
Amigo Clear (AMCLEAR)
Cancel Transaction (CANCEL)
Test HP-IB Channel (CHANNEL)
Channel Independent Clear (CICLEAR)
Clear Logs (CLEAR LOGS) . . . . . . . . .
Describe Selected Unit (DESCRIBE) .
Perform Internal Diagnostics (DIAG)
Output Error Rate Test Log (ERT LOG)
Exit Program (EXIT) ....... .
Output Fault Log (FAULT LOG) .
Output Help Information (HELP)
Initialize Media (INIT MEDIA)
Update Device Logs (PRESET)
Request Status (REQSTAT) ....
Perform Read-Only Error Rate Test (RO ERT)
Output Run Log (RUN LOG) ..... .
Spare Sector (SPARE) . . . . . . . . .
Output Spare Table (SPARE TABLE)
Output Device Table (TABLES)
Perform Servo Test (SERVO)
Set Unit Number (UNIT) ...... .
Perform Write-Then-Read Error Rate Test (WRT ERT)
Troubleshooting
Disc Drive Maintenance
Tape Drive Maintenance .
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