Test 1A - Fault Messages
Battery must be fully charged before proceeding. Fault messages displayed will fit 2 categories: DRB-II fault messages and bus fault messages. Connect DRB-II to data link connector to get fault message. See FAULT MESSAGES table and proceed to appropriate test number.
FAULT MESSAGES
| Fault Messages | Test No. | |||
|---|---|---|---|---|
| DRB-II Fault Messages | ||||
| Blank Screen On DRB-II (1) | 2A | |||
| RAM TEST FAILURE | 3A | |||
| CARTRIDGE ERROR | 4A | |||
| KEY PAD TEST FAILURE | 5A | |||
| LOW OR HIGH BATTERY | 6A | |||
| Bus Fault Messages | ||||
| SHORT TO BATTERY | 7A | |||
| SHORT TO 5 VOLTS | 8A | |||
| SHORT TO GROUND | 9A | |||
| BUS (+) & BUS (-) SHORTED TOGETHER | 10A | |||
| NO TERMINATION | 11E | |||
| BUS BIAS LEVEL TOO LOW | 12E | |||
| BUS BIAS LEVEL TOO HIGH | 12E | |||
| NO BUS BIAS | 13E | |||
| BUS (+) OPEN | 12E | |||
| BUS (-) OPEN | 12E | |||
| BUS (+) & (-) OPEN | 12E | |||
| NOT RECEIVING BUS MESSAGES CORRECTLY | 14A | |||
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