TM 11-5840-281-12-1
4-32. TROUBLESHOOTING PROCEDURES. (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3.
Check cables W3007, W3003, and W3004 for continuity.
Replace defective cable. If problem still persists, refer to a higher ategory of
maintenance.
2.
Blank crt on either control-indicator.
Step 1.
Check fuse F1907 on rear of control-indicator.
If fuse is blown, momentarily turn off power and replace fuse. If new use blows,
refer to a higher category of maintenance.
Step 2.
Place BITE-AZ TILT meter select switch to BITE position.
Place BITE SELECT
switch to + 300V position and observe indication on AZ TILT/BITE meter.
a. If meter indicates in green zone, proceed to step 3.
b. If no meter indication is obtained, refer to a higher category of maintenance.
c.
If meter indicates other than green zone, adjust rotating coil amplifier by
adjusting R1632 + 300V ADJ until meter indicates in green zone. If
adjustment above cannot be accomplished, refer to a higher category of
maintenance.
Step 3.
Place BITE SELECT switch to + 35V position and observe indication on AZ
TILT/BITE meter.
a. If meter indicates in green zone, proceed to step 4.
b. If no meter indication is obtained, replace + 35V voltage regulator card (para
c.
If meter indicates other than green zone, adjust 35V voltage regulator card
as indicated in I through 3 below:
1. Set up multimeter to measure + 40 v.
2. Connect positive lead of multimeter to J615 BITE MON and connect
negative lead to J616 DC RET.
3. Adjust R3427 + 35V ADJ on 35V voltage regulator card for + 35V
indication on multimeter.
4-107
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