TM 11-6130-392-34
socket pins is bad, disconnect testing. Forward bat-
TIME switch.
tery charger to next higher maintenance level.
(1) If display module that was bad, now reads
h. Insert removed display module into display
good, go to step f.
module socket.
(2) If display module, that was bad, still reads
i. Set POWER switch to ON.
bad; set POWER switch to OFF, replace this display
module (Section IV, para 3-17). Go to section V.
tive lead to negative terminal of capacitor C1 (fig.
3 - 3 ) . With positive lead of multimeter, measure
voltage at pins 1, 27 and 28 of A12 timing circuit as-
g. Remove display module that reads wrong. Us-
sembly (fig. 3-6).
ing multimeter, check continuity between each pin
(1) If the meter reading is 9.0 volts or greater
of display module socket and appropriate pin on A12
for each pin, go to step k.
timing circuit. Refer to table 3-4 and figure 3-7.
(1) If continuity for each pin on the display
(2) If the meter reading is less than 9.0 volts
f o r any pin; d i s c o n t i n u e testing, send battery
module socket is good, go to step h.
charger to next higher maintenance level.
(2) If continuity for any of the display module
Table 3-4. Connections Between Display Module Sockets and A12 Timing Circuit Assembly.
Figure 3-7. Test Point Locations, Display Module Sockets
3-11
