TM-9-1040-267-20-P
LAUNCHER, GRENADE, SMOKE: SCREENING, RP, M243; RP, M257; RP, M259
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
FEBRUARY 1984
TM-9-1040-267-20-P - Page 20 of 108
2-6
TM 9-1040-267-20&P
Table 2-2. TROUBLESHOOTING PROCEDURES
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
DISCHARGER
1. DISCHARGER WON’T FIRE.
Step 1.
Position discharger with nameplate down. Inspect electrical
receptacle connector (1) for broken shell and broken, bent or
missing pins.
a. If no damage, go to step 2.
b. If pins are bent, straighten, then go to step 2.
c. If shell or pins are broken or pins are missing, replace
electrical receptacle connector. Remove and install
(p 2-29), then go to step 2.
NOTE
Check key on electrical receptacle connector to locate position of pins A, B,
and C.
Do not let multimeter probe prod touch electrical receptacle connector shell.
This will cause wrong meter reading.
Insure good contact by multimeter probe prod on test point. Poor contact will
cause false meter reading.
Step 2.
Set range switch on RX1 and zero multimeter. Touch red probe prod on pin A of electrical
receptacle connector (1). Touch black probe prod on pin of electrical contact (2) in each
discharger tube (3).
a. If meter reads from 13 to 18 on OHMS scale for all four checks, no fault.
Go to step 3.
b. If meter reads below 13 or above 18 on OHMS scale for any of four checks,
resistor is faulty.
Replace resistor. Remove and install (p 2-21), then go to step 3.
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