Troubleshooting; Section Vi - ADC AD-81 Service Manual

The information provided will help isolate the most probable component(s) associated with the difficulty described.
The experienced technician realizes, however, that a loose connection or broken or shorted wire may be at fault
where electrical components are concerned – not necessarily the suspect component itself.
ELECTRICAL PARTS SHOULD ALWAYS BE CHECKED FOR FAILURE BEFORE BEING
RETURNED TO THE FACTORY.
The information provided should not be misconstrued as a device for use by an untrained person in making
repairs. Only properly licensed technicians should service the equipment.
OBSERVE ALL SAFETY PRECAUTIONS DISPLAYED ON THE EQUIPMENT OR SPECIFIED
IN THIS MANUAL WHILE MAKING REPAIRS.
Refer to "Electrical Troubleshooting" section for a detailed troubleshooting procedure for electrical components.
A. No display on computer...
1. Open circuit breaker switch or blown fuse.
2. Tripped overload on the blower MTR.
3. Bad wiring connection.
4. Faulty microprocessor controller (computer).
B. Computer will not accept keyboard (touch pad) entries...
1. Keyboard (touch pad) ribbon is not plugged into computer securely.
2. Keyboard (touch pad) is defective.
3. Faulty microprocessor controller (computer).
C. Dryer will not start, but computer display indicators are on...
1. Failed contactors.
2. Failed arc suppressor (A.S.) board.
3. Failed microprocessor controller (computer).
4. Failed motors.

SECTION VI

TROUBLESHOOTING

37