Advanced Instruments 3900, Руководство по обслуживанию

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Symptom Check Suggested Action
Troubleshooting Table
29
The Advanced ® Model 3900 Service Manual
1. Power availability. Temporarily
unplug the power cord from its wall
outlet and replace it with a known
workable lamp or small appliance.
2. Power connection.
3. Unplug the power cord from the
power cord socket. Use a small
screwdriver to pry out the voltage
selector/fuse holder. Visually check
the two 5 mm x 20 mm time delay
(T) fuses mounted on it. Use a
continuity checker or replacement
fuse to check continuity if there is
any doubt.
Check the values marked on the
fuses. For 100-130V operation, they
should be 2-Amp fuses; for 200-
250V operation, they should be 1-
Amp fuses.
a. Have the power restored.
b. Make sure the power cord is
firmly plugged into both the wall
outlet and the socket on the back
of the instrument.
c. Replace the fuses if blown or if
incorrect value.
Reinstall the fuse holder into the
back of the instrument with the
correct arrowheads matching.
If the fuses were blown and the
replacement fuses blow also,
contact Advanced Instruments for
Hot-Line
®
Technical Service.
Abrupt loss of power
(no display)
“ Block Probe Failure ” Switch the instrument off, then on.
Check the sample probe by running
the A/D Test .
If the error message persists, contact
Advanced Instruments for Hot-
Line
®
Technical Service.
“ Block Probe Open? ” Switch the instrument off, then on.
Check the sample probe by running
the A/D Test.
If the error message persists, contact
Advanced Instruments for Hot-
Line
®
Technical Service.
Procedure, technique. “ Calibration Out of
Range; Repeat Calib ”
Repeat calibration.
“ Calibrator Out
of Range ”
Wrong calibrator? See User’s Guide,
Chapter 4. Repeat calibration.
“ Cassette Index Error ”
“ Cassette Pusher
Not Back ”
Visually check for a cassette in
the wrong position or other visible
mechanical cause. a. Clear the cause of the problem,
if visible, and properly realign
all remaining cassettes before
continuing.
b. Press STOP to reset the
instrument.
c. Press START to continue testing.
If the error message persists,
contact Advanced Instruments for
Hot-Line
®
Technical Service.