TM 9-6115-730-24
0010
TROUBLESHOOTING USING DVR FAULT CODES - Continued
NOTE
The variation (ripple) of exciter field current exceeds the diode monitor trip point (parameter: 19)
for a period of five seconds.
SYMPTOM
4.
Code 603
MALFUNCTION
Rotating Diode Defective.
CORRECTIVE ACTION
STEP 1.
Check DVR parameter 19 in accordance with WP 0083.
STEP 2.
Disconnect wire from DVR A3F1 and check continuity between A3F1 and TB5-2.
If continuity does not exist, repair or replace wiring harness as necessary
STEP 3.
Verify that G1F1 is connected to TB5 terminal 2 and G1F2 is connected to TB5
terminal 1.
STEP 4.
Disconnect wire from DVR A3 terminal F2. Check continuity between A3F2 and
TB1-5 terminal 1. If continuity does not exist, repair or replace wiring harness as
necessary (WP 0088).
STEP 5.
If continuity exists, replace rotating diodes (WP 0094).
STEP 6.
If replacing rotating diodes does not resolve the problem, repair main generator
(G1) (WP 0094).
STEP 7.
If the problem is not resolved, replace the generator (WP 0095).
0010-4
