Samsung FTQ387LWGX Service Manual page 40

4. Troubleshooting
SYMPTOM
Check whtether temperature is risen
*
over 400 F(202 C) within 10 minutes
in a state of room temperature.
Oven temperature
is risen fast.
Check whether harness has been
*
misconnected or have a short circuit.
Measure resistance values of each
*
heater are within a normal extent or
not.
The self-cleaning
feature will not
operate when
This is in normal state.
*
warming center or
warming drawer
is on.
Make sure that keypad cable on touch
PCB is in normal state.
Keypad is not
worked normally Make sure connector (CN07) on main
in partially or PCB or PCB pattern.
entirely.
Check whether touch control PCB has
been damaged.
Check warmer drawer relay (Ry06)
*
on sub PCB and terminal(T03).
Warmer drawer
heating is not
Measure whether resistance value
*
working.
of warmer drawer heater is in normal
extent or not.
Check the oven lamp relay (Ry09) on
*
sub PCB and connector (CN01).
Oven lamp is not
working.
Measure the resistance value of both
ends of lamp terminal.
DIAGNOSIS
40
REMEDY
Replace or repair it if relay on sub PCB or
*
main have a short circuit.
Replace or repair harness.
*
Replace heater is in a abnormal state.
*
The self-cleaning feature will not operate
*
when warming center or warming drawer
is on.
Replace after con rming whether it has been
loosen or disconnected.
Replace or repair after con rming whether
keypad cable has been loosen or disconnted.
Replace assembly of touch control pcb. ( PCB
+ Glass touch)
* Replace terminal(T03) or relay(Ry06).
* Replace sub PCB.
* Replace warmer drawer heater.
Replace or repair if harness has been
*
loosen or disconnected.
Replace oven lamp relay(Ry09) or Ry-
*
source relay.(Ry01)
Replace Sub PCB.
*
Replace lamp if it has been disconnected.
*
(120V 40W)