TM 10-4610-241-24
TO 40W4-13-42
Table 3-1. Direct Support Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ROWPU ASSEMBLY - continued
4.
PANEL LAMP FAILS TO LIGHT.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
WARNING
High voltages in this equipment can cause serious injury or death. When applying power
during a test, take proper measures to ensure safety of personnel. Never work on
electrical equipment unless there is another person nearby who is familiar with the
operation and hazards of the equipment.
Perform lamp test by pushing light switch S11 momentarily to the “all up” position.
If all lamps, except panel lamp, illuminate, go to step 4.
Check if 208 VAC, three phase power is supplied by power source.
If 208 VAC, 3 phase power is not supplied by power source, refer to power source manual.
Disconnect power cable at power inputjack, J1 (Models WPES-10, H-9518-1, WPES-30, and H-9518-3) or
J10 (Models WPES-20 and H-9518-2) and check for 208 VAC between pins A-B, A-C, and B-C on cable.
If power is not measured in all three tests, replace generator cable assembly. Refer to Paragraph 3-28.
Disassemble panel light assembly (Paragraph 2-74) and check for 115 VAC at terminals removed from
light assembly.
If 115 VAC is measured, repair panel light assembly. Refer to Paragraph 2-74.
Perform a point-to-point continuity test of light circuit from J1 (C) to DS10 (2) (Models WPES-10, H-
9518-1, WPES-30, and H-9518-3) and from DS10 (1) to J1(N). On models WPES-20 and H-9518-2, check
between J10(C) and DS10(2) and from DS10(1) to J10(N) and J1(N).
a.
b.
d.
c.
If light switch, S11 is open (in ON position), replace S11. Refer to Paragraph 3-49.
If cable assembly, W52 is open, repair it. Refer to Paragraph or 3-27.
If circuit breaker CB9 is open (CB9 ON) replace it. Refer to Paragraph 3-53.
If continuity is not measured through wiring, tighten loose connections or replace defective wire.
3-10 Change 1
