Agilent Technologies 83640B - Page 75

ILT.3075
Either the front panel SMI (A2) or the ribbon cable
(W10) is faulty. Inspect the ribbon cable. Replace
the A2 assembly or W10, as required, and go to the
Troubleshooting Foldout, block 1 (located just prior to the
\Special Cases" tab).
ILT.3080
Using either an oscilloscope or a voltmeter, check the
following voltages at the rear panel SMI connector.
Location Measurement
Pin 7 +5.2 Vdc
Pin 5 +15.0 Vdc
Pin 10, 18, 19, 20 TTL High
Did all voltages pass?
Go To A19.9000 Continue
ILT.3081
Perform the following setup:
1. Press 4
PRESET
5 .
2. Press 4
SWEEP TIME
54
10
54
SEC
5 .
Using an oscilloscope or a voltmeter, check the following
voltages on the rear panel SMI connector. Note that pin
12 is a sweep ramp.To change the sweep ramp, change
the sweep time (using an oscilloscope, try a sweep time of
approximately 100 ms).
Agilent 8360 Instrument Level Troubleshooting 1a-63