Samsung FTQ387LWGX Service Manual page 38

4. Troubleshooting
4-1 Failure Display Codes
* Explain of primary parts of Main PCB
CN06 CN06
CN04,CN05 CN04,CN05
Explatin of the function of primary parts.
This is connector which is connected with Door plunger switch and Door lock switch.
CN01
(COM-NO)
CN02 This is connector which is connected with oven sensor.
This is to stop operating self-cleaning and steam mode if hot indicator lamp on cooktop is
CN03
lighted with being supplied with AC120V(L1, N).
CN04,CN05 This connector is to get all operating of relay on sub PCB to be connected.
This is consisted of 15 pin and take a role of getting a cable on keypad to connect with touch
CN06
PCB.
This is to supply power with primary on Low voltage transformer, and AC120V with main PCB
through harness.
CN08,CN09
It won t be problem even though CN08 and CN09 has been changed when you insert housing.
This is connector which take a role of supplying secondary voltage of Low voltage transformer
CN10
with main PCB.
This is the element to protect main PCB, getting varistor to work if over voltage is supplied with
ZNR1
varistor.
IC02 This is to supply DC12V with main PCB by voltage regulator.
IC03 This is to supply DC5V with main PCB by voltage regulator.
CN02 CN02 CN01 CN01
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IC02 IC02
(7812) (7812)
IC03 IC03
(7805) (7805)
CN10 CN10
ZNR1 ZNR1
(Varistor) (Varistor)
CN03 CN03
CN08, CN09 CN08, CN09