Samsung FTQ353IWUB Service Manual page 39

4. Troubleshooting
SYMPTOM
*
*
Cooktop is not
working or being
occurred a
*
abnormal working .
*
*
Convection fan is
*
not rotated .
It has smell or
smoke when oven
*
has been started
initially .
LED display
is a little bit
*
dim partially or
invisible entirely .
There is not
*
buzzer beep
sound when
keypad is being
worked .
DIAGNOSIS
Make sure that Radiant element
or Infinite switch corresponded
RR(Right Rear), RF(Right Front),
LR(Left Rear), LF(Left Front) .
Check whether harness is
connected with radiant element or
Infinite switch has been loosen or
disconnected .
Check whether there is any crack or
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 .
Make sure whether harness between
connector(CN04, CN05) on sub PCB
and connector(CN04, CN05) on main
PCB has been connected normally .
This is in normal state .
LED display is inferior .
Check the state of buzzer on main
PCB and whether PCB pattern have
a short circuit or has been open .
* Replace Infinite 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 main 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 .
3
REMEDY