TM 5-3610-253-14
Table 5-23. DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. ERROR MESSAGE 84 - Cont
Visually check ribbon cable between circuit boards IAR and AR and
Step 5.
check continuity of all pins.
(a) If ribbon cable is defective, replace ribbon cable
(b) If ribbon cable is not defective, proceed to step 6.
Step 6.
Replace circuit board IAR (paragraph 5-40.28).
If malfunction persists, proceed to step 7.
Step 7.
Replace circuit board AR (paragraph 5-40.28).
If malfunction persists, refer to electrical and electronic
schematics for fault isolation.
6. ERROR MESSAGE 85 OR 86.
(85) During cutting cycle, control channel board (KK) registers discre-
pancies more than three times at logic outputs between the cutting
circuit channels (board HK and AR).
(86) Static discrepancy exists between output of both cutting circuit
channels (board HK and board IAR). LED V2 and V3 on KK board are
lit permanently.
Step 1.
Check basic condition of all LEDs on card HK and IAR and note all
errors (Table 5-22.)
(a) Troubleshoot error in accordance with the following flow
chart.
(b) If malfunction is not corrected, proceed to step 2.
