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  TM 11-5820-765-34
10. RESISTOR R3
REMOVE
Remove top panel (para 2-10).
Remove nuts, washers.
Tag and disconnect leads.
Remove
resistor.
REPLACE
Install new resistor.
Connect leads.
Replace
nuts,
washers.
Replace top panel.
REMOVE
Remove top panel (para 2-10).
Unbolt rear panel.
Disconnect
leads
and
tag:
W6 from diode heatsink
W8 from TB3-2
W134 from TB3-1
POS wire from TB1 POS terminal
NEG wire from TB1 NEG terminal
L1, L2 from TB1 terminal L2 (PP-4763)
Ll, L2 from TB1 terminal L2 (PP-4763A)
DC output terminal leads W136
from TB2-4.
Remove mounting nut, washer.
Remove diode.
REPLACE
Apply thermal compound (Item No. 3
of heatsink.
Install new SCR.
Torque
to
120
inch/pounds
with
torque
wrench.
Connect
gate
lead
of
SCR
to
TB3.
Connect cathode lead of SCR to TB3.
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