Sharp R-6R50 - Page 9

|
3-BASO(W)/(B}
R-6R50(
3-6G50(W)/(B}
.
R-6G50{
2-6G52(W)/(B}
t-BR70(W)/(B)
.
,
R-6R70(
PROBLEM
_
POSSIBLE
CAUSE
TEST
PROCEDURE
OR
TEST
PROCEDURES
CORRECTION
:
fee
PROCEDURE
a.
LETTER
COMPONENT
TEST
GRILL
COOKING
CONDITION
(CONT’D)
|
a
F
MONITOR
SWITCH
TEST
|
Disconnect
the
oven
from
the
power
supply.
sae
at
switch
Defective
fan
motor.
Replace
fan
motor.
;
i ‘
RcteEuvetauch
Golan
Procedure
P
Disconnect
the
wire
lead
from
NC
terminal
of
the
monitor
switch. Before
performing
this
test,
make
sure
i
.
the
1st
latch
switch is operating
properly
referring
to
Open or loose wire connection to the | Replace or repair wiring
above
components.
“Switch
Test
Procedure”,
Open
or
loose
wire
connection
to
the
|
Check
and
repair
wiring.
Connect
one
ohmmeter
lead
to
NC
terminal
of
monitor
turntable
motor,
1st
latch
switch
or
moni-
switch,
and
the
other
lead
to
COM
terminal
of
monitor
Defective
heater
thermal
cut-out.
(For
|
Procedure
H.
R-6R50 only)
tor
switch.
switch,
as
shown
figure.
When
the
door
is
opened,
the
meter
should
indicate
a
close
circuit.
When
the
plunger
of
monitor
switch
is
pushed
by
a
screw-driver
a
ey
Defective
1st
latch
switch.
Defective
turntable
motor.
Replace
turntable
motor.
Defective
touch
control
unit
through the latch hook hole on the front plate of the
Defective rotisserie motor assembly. Replace rotisserie motor
assrmbly.
oven cavity with the door opened, the meter should
Defective 1st latch switch.
indicate an open circuit. In case improper operation
Defective . heater thermal cut-out. (For | Procedure H.
R-6R50 only)
is indicated, replace the defective monitor switch. eae] At) ast latch
Defective touch contro! unit Procedure P.
Fan motor does not rotate.
2nd latch
switch
Heater
switch
Turntable motor does not rotate
when MINUTE PLUS/
START pad ts touched.
(Oven lamp lights)
The . rotisserie. motor . assembly
does not oprtate. (For R-GR50,
R-6R70)
After testing the monitor switch, re-connect the wire
lead to NC terminal of the monitor switch.
eed
L SURGE RELAY TEST
Disconnect the connector from the wire harness (main).
Afer stopped the grill cooking, the
fan motor does not rotate for more
than 1 minute. (During cooking,
it rotates)
When MINUTE PLUS/
START pad touched, but grilt
heating element stops it’s operate
soon (after about 10 minutes).
CONTACTS:
With 12 volts D.C. applied to the surge relay coil (1) and (6), a
check of contact with an ohmmeter should indicated (3) and (5)
sy contacts are closed.
} Without 12 volts D.C. applied to the surge relay coil (1) and (6),
tte an ohmmeter should indicate those contacts are opened. If im-
proper operation is indicated, replace the-surge relay. If proper
operation is indicated, check for loase on broken wire connections.
Procedure H.
Check fan blade, fan duct, fan
motor, air intake duct, partt-
tion plate, exhaust duct, and
ventilation openings.
Heater thermal cut-out is opened.
Thy
4 ta -
wre.
7 ny
=
COIL:
A continuity check of the surge relay coil should indicate approxi-
mately 160 ©. If the motor does not imdicate above ohms, replace
the surge relay.
15