ARMY TM 9-6115-671-14 AIR FORCE TO 35C2-3-446-32 MARINE CORPS TM 09249A/09246A-14 4-28 TABLE 4-4.  UNIT TROUBLESHOOTING (CONTINUED)    OK   Not OK   Not OK   OK      OK   OK   Not OK CIM DISPLAY SCREEN BATTERY AMPS INDICATOR SHOWS   NO CHARGE WHEN BATTERIES ARE LOW OR DISCHARGED CIM display screen BATTERY AMPS indicator shows no charge when batteries are low or discharged. Inspect fan belt   (see para. 4.10.9). Adjust or replace fan belt (see para. 4.10.9). Test Battery Current Transducer (see para. 4.13.5). Replace Battery Current Transducer (see para. 4.13.5). Test alternator. Refer to TM 9-2815-259-24. Replace alternator. Refer to TM 9-2815-259-24. Not OK Check for breaks or loose connections or corroded terminals in charging circuit. Refer to Schematic, FO-1 Repair charging circuit. Refer to Schematic, FO-1. Is HEARTBEAT LED on I/O interface module blinking? See para. 4.8.25. Replace I/O interface module (see para. 4.8.25). No Notify next higher level of maintenance. Yes