Samsung FTQ387LWGX Service Manual page 41

4. Troubleshooting
SYMPTOM
Make sure that Radiant element
*
or In nite switch corresponded
RR(Right Rear), RF(Right Front),
LR(Left Rear), LF(Left Front).
Check whether harness is
*
connected with radiant element or
In nite switch has been loosen or
Cooktop is not
disconnected.
working or being
occurred a
Check whether there is any crack or
*
abnormal working.
the area of being disconnected of
harness.
Measure whether RC(Rear Center)
*
Heater has been connected with
warming center relay(Ry07) on sub
PCB normally or not.
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
LED display is inferior.
*
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
41
REMEDY
Replace In nite switch or Radiant element.
*
Replace or repair harness
*
Replace or repair Warming Center.
*
relay(Ry07)
Replace or repair Warming Ry-source relay.
*
Replace sub PCB.
*
Replace or repair if harness has been
*
loosen or disconnected.
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.
*