Tektronix 1502C User Manual page 103

Appendix C: Operator Troubleshooting
Operator Troubleshooting
(with cases on)
YES
power source a
Using VOM, check for
near zero Ohms in
fuse.
Is
YES
fuse
OK?
NO
Replace fuse.
C–2
Preset front panel and
power on.
Is the NO
greed display?
battery?
NO
Check line voltage switch for correct setting
and change if necessary. With VOM, check
wall outlet voltage and plug in somewhere
else if no voltage. Check fuse and power
cord for near zero Ohms.
DO NOT USE INSTRUMENT.
Serious problems need repair. Refer
to 1502C Service Manual
Troubleshooting procedures.
Refer to Option Port
and Accessories Troubleshooting
procedure.
If no accessories, then OK to use
instrument.
turn the
Is
YES
there a
"Initializing"
message appear
NO
Turn instrument off
immediately to avoid
possible damage to
LCD display.
Did
YES
on LCD?
If error
message(s)
appear, follow
the displayed
instructions.
Is
waveform
YES
missing, erratic or
badly
distorted?
NO
Perform initial
operator
performance
verification checks.
NO
Did instrument pass
checks?
YES
1502C MTDR User Manual