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R-8580
TEST PROCEDURES
(CONT'O)
PROCEDURE
LETTER
COMPONENT
TEST
N
RELAY
UNIT
TEST
The relay unit consists
of circuits
including
the shut-off
relays, buzzer, transformer,
etc.
Plug power cord into wall receptacle
"88:88"
will be flashing
in the display.
Remove the outer case and check voltage
between
Pin Nos. 1 and 3 of the 6-pin connector
(A)
on the relay unit with an A.C. voltmeter.
The meter should
indicate
240 volts, if not check oven circuit.
Shut-off,
Cook and Heater
Relay Test
These relays are operated
by D.C. voltage.
Check voltage at the relay coil with a D.C. voltmeter
during the microwave
or convection
cooking
operation.
DC. voltage
indicated
.,........ Defective
relay.
DC. voltage
not indicated
. . . . . . ..Check diode which
is connected
to the relay coil. If diode is
good, control
unit is defective.
I
RELAY
SYMBOL
I
OPERATIONAL
CONNECTED
COMPONENTS
VOLTAGE
I
RYl (COOK)
Approx.
14 V. D. C.
RY2
Approx.
14 V.D.C.
RY3
Approx.
14 V.D.C.
RY4 (HEATER)
Approx.
14 V.D.C.
RY5
Approx.
14 V. D. C.
RY6
Aoorox.
14 V.D.C.
Power transformer
Oven lamp/Turntable
motor
Convection
motor
Heating element
Cooling fan motor
DamDer motor
(RD82R02U)
18
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