 |
|||
|
|
|||
|
Page Title:
Table 3-2. Troubleshooting Guide |
|
||
| ||||||||||
|
|
 TM 9-4910-736-14&P
Troubleshooting Guide
Step
no.
Probable cause
Symptom
Action
1
Test set does not work
a. Battery leads
a. Replace or repair
in COND, OHM or COIL
defective.
battery leads.
position. PILOT light
b. Power supply pro-
b. Refer to tables 3-3
off.
tection defective.
and 3-4.
2
Ql3 or A2 defective.
No indication during
Refer to table 3-5.
condenser leakage
test. PILOT light on.
A21 or Q4 defective.
Test set does not work
Refer to table 3-4,
3
in OHM and SERIES RES
steps 2 through 5.
positions. PILOT light
on.
SERIES RES position
4
problems:
4.1
With test leads short-
One of the following
Refer to table 3-6,
ed, meter cannot be
steps 4 through 9.
ICS is defective:
set to SERIES RES SET
A15, A18, A13, A14,
LINE by ZERO ADJ
A16, A17, or A19.
control.
Refer to table 3-6,
4.2
A19 defective.
Meter swings sharply
to left (below 0 KV)
step 11.
mark when test leads
are open.
4.3
IC All or A12
a. Refer to table 3-6,
Meter indication re-
steps 2 and 3.
mains constant
defective. One of
b. Refer to table 3-7,
whether test leads
the following
transistors is
steps 2 through 5.
are shorted or open.
defective:
Q9, Ql0,
Q11 or Q12.
Refer to table 3-8.
A3 defective.
capacitance Test:
5
Meter indication is
independent of
capacity connected
to test leads.
Refer to table 3-4,
A21 or Q4 defective.
6
Ohmmeter Test: With
steps 1 through 5.
test leads shorted,
neter cannot be set
to zero ohms with
ZERO ADJ control. (In
both 0-15 and 0-100K
positions of the OHM
METER RANGE switch.)
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals