CLOCK Troubleshooting CLOCK WILL NOT OPERATE Check to see if fuse is blown. ↓ OK ↓ Check to see if clock adjusting knob is binding in position and has failed to return. ↓ OK ↓ Check to see if battery voltage is over 11V with no load. ↓ OK ↓ Check to see if connector on clock side is loose or rusted. ↓ OK ↓ Check to see if there is voltage at terminal B or connector or clock side. ↓ OK ↓ Check to see if clock ground wire is loose or rusted. ↓ OK ↓ Replace clock. Blown fuse → Locate trouble and repair or replace fuse as necessary. Adjusting knob not returned → Repair if necessary or replace clock. Below 11V → Recharge or replace battery. Loose or rusted → Repair No voltage → Locate cause and repair. Loose or rusted → Repair CLOCK LOSES OR GAINS TIME Check amount of time the clock loses or gains per day or a week against the allowable error table. ↓ Exceeds allowable error ↓ Check to see if there is 11V—15V on terminal B of connector on clock side. ↓ OK ↓ Adjust or replace clock. Below 11V → Locate cause and repair, or recharge battery.