800A External BOSE amplifier: Diagnosis/troubleshooting
DIAGNOSIS/TROUBLESHOOTING (800A EXTERNAL BOSE AMPLIFIER)
| Work instruction | Display OK | If not OK | ||
|---|---|---|---|---|
| 1 | Check wiring harness to the microphone |
|
< 0.5 Step 9 |
Step 2 |
| 2 | Check wire between amplifier and microphone |
|
< 0.5 Step 3 |
Open circuit in the wire/short circuit to ground. Repair wiring harness -> End |
| 3 | Check wire between amplifier and microphone |
|
< 0.5 Step 4 |
Open circuit in the wire/short circuit to ground. Repair wiring harness -> End |
| 4 | Check line for short circuit to ground |
|
0.5 Step 5 |
Open circuit in the wire/short circuit to ground. Repair wiring harness -> End |
| 5 | Check line for short circuit to ground |
|
0.5 Step 6 |
Open circuit in the wire/short circuit to ground. Repair wiring harness -> End |
| 6 | Check line for short circuit to B+ |
|
0 V Step 7 |
Open circuit in the wire/short circuit to ground. Repair wiring harness -> End |
| 7 | Check line for short circuit to B+ |
|
0 V Step 8 |
Open circuit in the wire/short circuit to ground. Repair wiring harness -> End |
| 8 | Replace microphone | Replace microphone | -> End | |
| 9 | Replace BOSE amplifier control module | Replace BOSE amplifier control module | -> End | |