Read Sharp R-90GCK (serv.man6) Service Manual online
10
R-90GCK
Home fuse blows when power cord is plugged into wall receptacle.
Fuse 20A blows when power cord is plugged into wall receptacle
PRESS STOP" does not appear in display when power cord is first
plugged into wall receptacle.
Display does not operate properly when STOP/CLEAR key is touched.
(The time of day should appear on the display with beep sound.)
Oven lamp does not light with door opened.
Oven lamp does not light in cook cycle. (It light when door is opened).
Cooking cycle runs 1 minute then shuts down.
Oven lamp light, but turntable motor does not operate.
Turntable motor operates normally but cooling fan motor does not
operate.
Oven does not go into a cook cycle, when START key is touched.
Low or no power is produced during microwave cooking (The food is
heated incompletely or not heated at all)
Extremely uneven heating is produced in oven load (food).
Function of variable cooking does not operate properly except HIGH
power.
Oven does not go into cook cycle when START pad is touched.
Heating elements do not heat.
Temperature in the oven cavity is lower or higher than preset.
Convection cycle runs for 10 minutes then shuts down.
Convection motor does not operate of all or properly.
A
MAGNETRON
B
HIGH VOLTAGE TRANSFORMER
C
H.V. RECTIFIER ASSEMBLY
D
HIGH VOLTAGE CAPACITOR
E
SECONDARY INTERLOCK SWITCH
E
3RD. LATCH SWITCH
E
DOOR SENSING SWITCH
E
MONITOR SWITCH
F
HIGH VOLTAGE FUSE
G
NOISE FILTER
H
FUSE 20A
J
MAGNETRON TEMPERATURE FUSE
K
THERMAL CUT-OUT (TOP)
M
TOP HEATING ELEMENT
O
THERMISTOR
P/U
DAMPER MOTOR
Q
DAMPER SWITCH
V
TOUCH CONTROL PANEL
W
TACT SWITCH
X
RELAY RY-1
X
RELAY RY-2
X
RELAY RY-3
X
RELAY RY-4
X
RELAY RY-5
X
RELAY RY-6
Z
FUSE1 ON PWB.
Y
SOLID-STATE RELAY (TOP)
Y
SOLID-STATE RELAY (SIDE)
Replace
OVEN LAMP
U
FAN MOTOR (MAGNETRON)
U
TURNTABLE MOTOR
S
CONVECTION MOTOR
Check
LOOSE WIRING
Check
SHORTED IN POWER CORD
Check
NO POWER AT OUTLET
Check
LOW VOLTAGE
L
THERMAL CUT OUT (SIDE)
N
SIDE HEATING ELEMENT
U
FAN MOTOR
(HIGH VOLTAGE TRANSFORMER)
Z
T/C TRANSFORMER
I
FUSE F10A
R
CONVECTION MOTOR CAPACITOR
Check
MISADJUSTMENT SWITCH
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
TEST PROCEDURE
CONDITION
COOKING CONDITION
(MICROWAVE)
(CONVECTION/
GRILL/ DUAL)
OFF CONDITION
PROBLEM
Display
