Samsung NE59J7630SS Service Manual page 36

4. Troubleshooting
SYMPTOM
*
*
*
*
Oven not
operating
(No power,
No display)
*
*
*
- IC02 : 7812(DC 12V)
- IC03 : 7805(DC 5V)
*
Oven temperature
*
is risen slowly.
*
DIAGNOSIS
Measure an input voltage.
Measure an input voltage of terminal
block.
Make sure that the relay on Main
PCB is being worked normally.
Make sure whether harness between
connector (CNS302,CNS303) on
main PCB has been loosen or
disconnected.
Measure resistance both ends of
terminal on thermostat.
(normal : 0 ohms)
Check whether harness is connected
terminal on thermostat has been
loosen or disconnected.
Measure voltage regulator
(IC02,IC03) on main PCB.
Make sure whether harness is
connected with Broil, Bake and
convection heater has been loosen
or disconnected.
Make sure whether Broil, Bake,
and convection heater has been
disconnected.
Make sure that heater relay and
pattern on Main PCB.
* Check circuit breaker.
* Make sure that the state of wire is
connected with Terminal block.
* Replace Main PCB if relay has been
damaged or there is any cracking on the
Main PCB.
* Repair harness is connected main PCB.
*
inserted into relay on Main PCB or not, take
action follow as;
- Replace or repair harness.
- Replace or repair main PCB.
* Replace the thermostat.
* Replace or repair harness.
*
of working of main PCB.
* Repair and replace harness.
* After taking out terminal from each heater,
measure resistance of heater and then
replace that if it is not a normal resistance
value.
* Replace or repair relay.
* Replace or repair Main PCB.
36
REMEDY