Sharp R-4P58 Service Manual page 13

Microwave oven with grill and bottom heater
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°C
)
POSSIBLE
CAUSE
AND
DEFECTIVE
PARTS
GH
VOLTAGE
GAPACITOR
iSE
T160mA
(F1)
GRILL
HEATING
ELEMENT
S(TOP)
|__|
BOTTOM
HEATING
ELEMENT
FCIL
PATTERN
ON P.W.B.
THERMAL
CUT-OUT
125°C
TURNTABLE
MOTOR
KE
Y UNIT
FAN
MOTOR
| | RELAY
RY4
TY
RELAY
RY2 ||
RELAY
RY3 P|
RELAY
RY4
|_|
RELAY
RY5
a
a;
PROBLEM
CONDITION
Fuse F2 15A blows when power
cord is plugged into wall outlet.
=
oO
ra
ke
WW
Zz
O
x
2
Fuse 1160MA
blows when the f
| | POWER
SUPPLY
CORD
|
E TC UGH
CONTROL
PANEL
Ot
|_|
OVEN
LAMP
OR SOCKET
|_|
THERMAL
CUT-OUT
150
|
a
os FUSE
15A (F2
|
| FUSE
F8A
(F3)
cil
ALT
HE
aE
HE
~
|
Ot
— MIS-ADJUSTMENT
OF SWITCHES
[|
SHV.
RECTIFIER
ASSEMBLY
aes
ee
| C |_|
PRIMARY
LATCH
SWITCH
| © |_|
MONITOR
SWITCH
|_|
© | SHORTED
WIRE
HARNESS
O [|_|
OPENED
WIRE
HARNESS
Rom
rae
is:
door is opened.
Oven lamp does not light when door
is opened. (Display operates.)
Home fuse blows when power cord
is plugged into wall outlet.
"PRESS STOP" does not appear in
display when power cord is plugged
into wall outlet.
:
Oven does not start when the
START button is pressed. (Display
operates.)
Oven lamp does not light. (Turnta-
ble motor operates.)
Fan motor does not operate. (Oven
lamp lights.)
Oven or electrical parts does not
stop when cooking time is 0 or
STOP button is pressed.
Oven seems to be operating but lit-
tle or no heat is produced in oven
load.
MICROWAVE
COOKING
CONDITION
Oven does not cperating properly
during variable cooking condition
except 100% cooking condition.
CONDITION
Bottam heating element does eal
ate.
Oven seems to be operating but lit-
tle or no heat is produced in oven
load. (Microwave power does not
seem to be generated properly.)
Grill heating element (top) does ap-
erate.
aie.
Oven goes into cook cycle but shuts
down before end of cooking cycle.
Grill heating element (top) does op-
erate.
R-4P53a(
R-4P58(B
4
R-4P58
;

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