Samsung FER710DRS Service Manual page 44

4. Troubleshooting
SYMPTOM
Check whether Convection fan
relay (Ry08) on sub PCB and
connector(CN01) is in normal.
Convection fan is
Make sure whether harness between
not rotated.
connector(CN04, CN05) on sub PCB
and connector(CN04, CN05) on main
PCB has been connected normally.
It has smell or
smoke when oven
This is in normal state.
has been started
initially.
LED display
is a little bit
*
dim partially or
invisible entirely.
There is not
buzzer beep Check the state of buzzer on main PCB
sound when and whether PCB pattern have a short
keypad is being circuit or has been open.
worked.
DIAGNOSIS
LED display is inferior.
* Replace or repair Relay.
* Replace or repair connector.
* Replace or repair harness.
* Replace or repair connector.
* Replace sub PCB.
* It has smell or smoke with burning dirt in
oven or a foreign substance when oven has
been working initially.
* Ventilate after getting self cleaning mode to
work.
* Replace main PCB.
* Replace or repair main PCB.
44
REMEDY