Samsung GE87W Service Manual page 20

6-1 Electrical Malfunction(continued)
Oven does not operate.
Is Fuse OK?
Is the magnetron
temperature switch
normal?
Is L.V.T normal?
Is the IC01
output of PCB
normal?
Checking high voltage
circuits
Caution
1.Be careful of high voltage circuits.
2. Discharge high voltage capacitor. .
Is Primary
interlock switch
normal?
Is Power Relay
normal?
Replace switch
Replace L.V.T.
Replace PCB.
Is high voltage
diode normal?
Is high voltage
capacitor normal?
Is magnetron
norma?
- 17 -
Inspection method
Make sure to inspect the power
relay after replacing primary
interlock switch, secondary interlock
switch and door sensing switch.
Primary interlock switch
Secondary interlock switch
Door sensing switch
Latch switch assembly
Replace Relay
Check a fan motor after replacing switch
Check PCB after replacing L.V.T.
Power Point Check Point
In case any of high voltage parts is
damaged, check all parts related to
high votlage.