R-870B
11
Fuse 15A blows when power cord is plugged into wall outlet.
Fuse M10A blows when the door is opened.
Home fuse blows when power cord is plugged into wall outlet.
"SHARP MICRO- OVEN" does not appear in display when power cord is
plugged into wall outlet.
Display does not operate properly when STOP/CLEAR pad is pressed.
Oven does not start when the INSTANT COOK/ START pad is pressed.
(Display operates.)
Oven lamp does not light. (Turntable motor operates.)
Fan motor does not operate. (Oven lamp lights.)
Turntable motor does not operate. (Oven lamp lights.)
Oven or electrical parts does not stop when cooking time is 0 or
STOP/CLEAR pad is pressed.
Oven goes into cook cycle but shuts down before end of cooking cycle.
Oven seems to be operating but little or no heat is produced in oven load.
Oven does not operating properly during variable cooking condition
except 100% cooking condition.
Top heaters do not operate.
Bottom heater does not operate.
Oven seems to be operating but little or no heat is produced in oven load.
(Microwave power does not seem to be generated properly.)
Top heaters do not operate.
Bottom heater does not operate.
Temperature is lower or higher than preset.
Convection motor does not operate.
Oven stops after 4 minutes 15 sec..
Oven is in sensor cooking condition but AH sensor does not end 1st.
stage or does not stop cooking cycle or the oven stops soon.
CONDITION
PROBLEM
MAGNETRON
HIGH VOLTAGE TRANSFORMER
H.V. RECTIFIER ASSEMBLY
HIGH VOLTAGE CAPACITOR
1ST. LATCH SWITCH
MONITOR SWITCH
2ND. INTERLOCK RELAY CONTROL SWITCH
THERMAL CUT-OUT 125˚C
THERMAL CUT-OUT 170˚C
FUSE M10A
FUSE 15A
NOISE FILTER
FAN MOTOR
TURNTABLE MOTOR
CONVECTION MOTOR
TOP HEATERS
BOTTOM HEATER
THERMISTOR
HIGH VOLTAGE FUSE
TOUCH CONTROL PANEL
KEY UNIT
RELAY RY1
RELAY RY2
RELAY RY3
RELAY RY4
RELAY RY5
RELAY RY6
FOIL PATTERN ON P.W.B.
AH SENSOR
POWER SUPPLY CORD
OVEN LAMP
SHORTED WIRE HARNESS
OPENED WIRE HARNESS
MIS-ADJUSTMENT OF SWITCHES
A
B
C
D
E
E
E
F
F
G
H
I
J
J
J
K
K
L
M
N
O
P
P
P
P
P
P
Q
R
MIX
COOKING
CONDITION
CONVECTION
COOKING
CONDITION
AH. SENSOR
OFF
CONDITION
COOKING
CONDITION
(COMMON MODE)
MICROWAVE
COOKING
CONDITION
GRILL
COOKING
CONDITION
POSSIBLE CASE
AND
DEFECTIVE PARTS
Summary of Contents for R-870B
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