Samsung RB2155SW Dokumentacja Pobierz pdf (Strona 49)

49

Appendix

ⅠⅠ

(Reference for circuit diagnostics)

Note) C → Common, NO → Normal open, NC → Normal close

3. When it operates as above, it is normal and

when it does not operate, repair the

corresponding relay.

1. Measure the coil bisection of the relay and

check whether it works.

2. Measure the apex bisection for open circuit.

* Disconnect the wire connector from the main

PCB CN70, 71 and measure the following

items.

3-contact

terminal Relay

DC 12V(Operation)

DC 0V(Standstill)

DC 12V(Operation)

DC 0V(Standstill)

C-NO:SHORT

C-NC:OPEN

C-NO:OPEN

C-NO:SHORT

SHORT

OPEN

Category Voltage of coil

terminal

Judge

2-contact

terminal Relay

Ref.1) Wire connector on the cabinet door.

Ref. 2) How to check relay failure

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