TM 1-1520-238-T-6
9–151
9–12.
AC ELECTRICAL POWER GENERATION – MAINTENANCE OPERATIONAL CHECK (cont)
9–12
If GENERATOR 2 CONTROL NO–GO PLT ELEC
PWR CNTR appears on HOD and no fault is found,
then replace generator 2 control (TM 1-1520-238-23).
2. Perform maintenance operational check as follows:
Task
Result
a. On pilot caution/warning panel (fig. 9–100),
check that APU ON indicator is lighted.
If APU ON indicator is not lighted, replace lamp
(TM 1-1520-238-23). If lamp still does not light, refer
to TM 1-1520-238-T-8 to troubleshoot APU.
M69-056
OIL PSI
MAIN
XMSN 2
INDICATOR
GEN 2
INDICATOR
RECT 2
INDICATOR
HOT RECT 2
INDICATOR
APU ON
INDICATOR
APU FAIL
INDICATOR
HOT RECT 1
INDICATOR
RECT 1
INDICATOR
GEN 1
INDICATOR
OIL PSI
MAIN
XMSN 1
INDICATOR
Figure 9–100.
Pilot Caution/Warning Panel
b. On pilot caution/warning panel, check that
OIL PSI MAIN XMSN 1, and OIL PSI MAIN
XMSN 2 indicators are not lighted.
If OIL PSI MAIN XMSN 1 or OIL PSI MAIN XMSN 2
indicators are lighted, refer to TM 1-1520-238-T-4 to
troubleshoot drive system.
c. On pilot ELEC PWR panel (fig. 9–99), set
BATT/EXT PWR switch to EXT PWR and
GEN 1 and GEN 2 switches to OFF/RESET.
