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If the Test Set Fails to Power-up
1. Is the Test Set plugged in? Listen for fan operation. If you don't hear it, check
Figure 2-3
Fuse
2. If there is no image on the display, remove the Test Set's covers and check the
3. Check the LEDs on the Controller assembly, see
o A SAVE/RECALL register named POWERON was saved to automatically
power-up the Test Set in a different state. Press the Preset key before
proceeding; this will restore the Test Set to the factory power-up condition.
o The Autostart Test Procedure on Power-Up: field (of the
"TESTS [Execution Conditions]" screen) is set to On to automatically run a
loaded program. Press the Shift key, then press the Cancel key to stop the
program. Press the Preset key to restore the Test Set to the factory power-up
condition.
To turn the autostart function off, press the
Execution Cond (under the SET UP TEST SET: heading). The
autostart function is at the bottom of the screen; turn it Off .
the line fuse, see
figure
CSD2 SERIAL
EXT REF
16X CHIP
INPUT
OUTPUT
10 MHz
OUTPUT
Line Fuse
Spare Fuse
power supply LEDs: +5V, −12V, +12V (see
out, the power supply or regulator board is faulty. If no LEDs are lit, confirm
that the Test Set is connected to the main power source. (Also, see step 5.)
LEDs should all light up immediately on power-up, and then go off several
seconds after a beep is heard. If the LEDs do not light when the Test Set is
powered-up, either the Controller or the Memory/SBRC assembly is faulty.
Tests
2-3.
S1 SERIAL PORT
HP-IB
figure 2-5 on page
Troubleshooting
Self-Test Diagnostics
key, then select
fuse2.eps
51). If one is
figure 2-5 on page
51. The
49
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Table of Contents
Troubleshooting
