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RAM Self Test ....................................................
6B-5
ROM Self Test ....................................................
6B-6
Disk Drive Self Test ...............................................
6B-6
Cycle Through Tests ...............................................
6B-7
Section 6C:
Troubleshooting
Introduction.........................................................6C-
1
Safety ..............................................................
6C-1
Trouble Isolation Flowcharts
.........................................
.6C-1
Power Supply Voltages Check ........................................
6C-12
CRT Monitor Signals Check ......................................
.6C-13
KeyboardSignalsCheck...........................................6C-l
4
Disk Drive Voltages Check ........................................
6C-15
Troubleshooting
Auxiliary Power .....................................
.6C-16
Section 6D:
Assembly
Removal
and Replacement
Introduction
........................................................
.6D-1
Removal and Replacement
of the Rear Panel Assembly
..................
.6D-3
Removal and Replacement
of the Disk Drive
...........................
.6D-4
Removal and Replacement
of the Power Supply Assembly ................
.6D-5
Removal and Replacement
of the Oscilloscope Assembly .................
.6D-5
Removal and Replacement
of the Attenuators
...........................
6D-7
Removal and Replacement
of the Keyboard Assembly
...................
.6D-8
Disassembling the Keyboard Assembly ...............................
6D-9
Removal and Replacement
of the Fan .................................
.6D-10
Removal and Replacement
of the Main Assembly
......................
.6D-10
Removal and Replacement
of the CRT Monitor Assembly
...............
.6D-11
Removal and Replacement
of the Feet/Tilt Stand .......................
.6D-12
Contents-4
HP 1652B/1653B
Service Manual
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