90
8. Reference
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SYMPTOM
DIAGNOSIS
REMEDY
Keypad is not properly
worked
• Make
sure that keypad cable on Display
PCB is in normal state .
• Replace
the keypad in case that it is
loosen or disconnected .
• Make
sure connector (CN201) on Display
PCB or PCB pattern .
• Replace
or repair the keypad in case
cable is loosen or disconnected .
Warming drawer is not
worked
• Check
a relay(RY506) and a
terminal(T508) at warming drawer .
• Replace
the terminal(T508) or relay
(RY506) .
• Replace
a main PCB .
• Measure
whether resistance of warming
drawer heater is in normal extent or not .
•
Replace a warming drawer heater .
Oven lamp is not
worked
• Check
the oven lamp’s relay and
connector (CN501) .
• Replace
or repair if the harness is loosen
or disconnected .
• Replace
oven relay(RY509) .
• Replace
main PCB .
• Measure
the resistance of both ends of
lamp terminal .
• Replace
lamp if it is disconnected .
(120V / 40W)
Smell or smoke is
occurred during the
very first operation.
• This
is in normal state .
• Smell
or smoke from the burning dirt in
the oven might be generated at the very
first operation.
LED display is a little
dim or dark, so it
makes uncomfortable
to see .
• LED
display is inferior .
•
Replace or repair Display PCB .
There is no buzzer
beep sound while
keypad is being
touched .
• Check
the state of buzzer on main PCB
and whether PCB pattern has a short
circuit or has been open .
• Replace
or repair Display PCB .
Cooktop flame with LP
is extraordinary short .
• Check
the cap of regulator .
• Remove
the cap of regulator and mount it
again upside down .
• Replace
the regulator .
Cooktop flame with LP
is extraordinary long
(with yellow flame)
• Check
the injector nozzle .
• Replace
the NG injector nozzle to LP
injector nozzle .
(Basically LN injector nozzles are
mounted at production line)
Convection fan is
not rotated .
• Check
whether Convection fan relay on
main PCB and connector(CN501) is in
normal .
• Replace
or repair Relay .
• Replace
or repair connector .
• Make
sure whether harness between
Connector on main PCB and Connector
(CN501) on main PCB is connected in
normal .
• Replace
or repair harness .
• Replace
or repair connector .
• Replace
main PCB .
Checkpoints before service request (Continued)