What was found
DEN - EES - DURING 8 DAY RIGHT SQUIB, ON FIRE CONTROL PANEL, WOULD NOT TEST IN EITHER POSITION 1 OR 2. MAINTENANCE REMOVED AND REPLACED ENGINE AND FIRE CONTROL MODULE, P/N 69-37307-145, S/N D01215, IAW BOEING 737-300 MM 26-21-51. OPERATIONAL TESTS GOOD. UNIT WAS FOUND TO HAVE WORN LAMPS AND INDICATORS L1, L3 AND L11 DAMAGED BY EXTERNAL CONTAMINATION. UNIT WAS REPAIRED AND TESTED IAW BOEING OHM 26-10-48 REV 38. NOT AN SDR REPORTABLE EVENT.