Samsung APH289SEF Service Manual page 34

5-3-8 When Dust Collector does not operate.
1. Causes of Failure
1) HVPS connecting harness cut or poor contact.
2) Reed switch harness cut, wrong wiring, or poor contact.
3) Dust collecting plate short.
4) Poor part of HVPS.
2. Inspection Items
1) Connection of HVPS connecting harness?
2) Connection of reed switch harness?
3. Inspection Procedure
Turn power off and on in 5 seconds.
Power on and Air cleaner on with remote control.
Check MICOM Pin No. #23, "HIGH"?
Check MICOM Pin No. #15, "LOW"?
Inspect and exchange HVPS assembly
✳ You are not able to check the input voltage of HVPS unless Reed switch contacts the magnet.
Samsung Electronics
Check voltage between CN710
No. #1 ↔ #2, DC12V?
Yes
Yes
Yes
Check voltage between
HVPS input edges, DC12V?
Yes
No
Inspect and exchange
Main PCB.
No
Inspect and exchange
MICOM(U101).
No
Inspect and exchange U12.
No
Check if the connecting
harness was cut.
Troubleshooting
33