FO-1
tween 2.5 and 3.5 see, adjust R7 for 3Sec. If specification
cannot be met, go to troubleshooting Table 4-7 (Fault
No. 6).
n. Timer Logic Tests Circuit.
(1) Disconnect all test equipment from test set, ex-
cept DC power supply as shown in Figure 4-2.
(2) Set TRIP TIME -START switch to DOWN and
TEST SELECT to AØ UV position. Jumper J1 pins, a, b,
g, and set TRIP TIME-START switch to UP.
(3) TRIP-TEST IN PROG indicator and TRIP
TIME-EARLY TRIP indicator will light. TRIP-TEST IN
PROG indicator will go OFF and TRIP TIME-TEST
COMPL indicator will light. If not, see troubleshooting
Table 4-8 (Faults No. 7, 8, & 11).
(4) Remove jumper from J1 pin a and set TRIP
TIME START stitch to DOWN. TRIP TIME lamps will
TM 55-4920-410-13&P
go OFF. If not, see troubleshooting Table 4-8 (Fault No.
l0).
(5) Set TRIP TIME-START switch to UP. TRIP
TIME TEST IN PROG indicator will light. TRIP TIME-
TEST COMPL indicator and TRIP TIME-L, ATE TRIP
indicator will light and TRIP TIME-TEST IN PROG in-
dicator will go off. If not, see troubleshooting Table 4-8
(Faults No. 7, 10, & 11).
(6) Set TRIP TIME-START switch to DOWN and
set TEST SELECT switch to 3Ø OVB and jumper pin a
to b and g. Set TRIP TIME-START switch to UP. “
(7) TRIP-TEST IN PROG indicator will light and
TRIP TIME-ACCEPT indicator will also light when
TRIP TIME-START switch is placed to UP. TRIP TIME-
TEST IN PROG indicator will go off. TRIP TIME-TEST
COMP indicator will light. If not, see troubleshooting Ta-
ble 4-8 (Faults No. 7,9, & 11). Set TRIP TIME-START
switch to DOWN.
Troubleshooting Table 4-7. Analyzer Test Set Circuits
4-11
