Sharp R-1501 ユーザーズマニュアル

12

CK = Check / RE = Replace

POSSIBLE CASE AND 
DEFECTIVE PARTS

PROBLEM

TEST PROCEDURE

CONDITION

OFF

CONDITION

IDLE

CONDITION

MICROWAVE

COOKING

CONDITION

Home fuse blows when power cord is plugged into wall receptacle.

Monitor fuse blows when power cord is plugged into wall receptacle.

Display does not illuminate when power cord is first plugged into wall 

receptacle.

Display does not operate properly when STOP/CLEAR button is touched. 

(The time of day should appear on the display with beep sound during 

normal condition.)

Oven lamp does not light with door is opened.

Hood fan motor operates when power cord is first plugged into wall 

receptacle.

Temperature of oven base seems more than 140˚F (60˚C) because of 

operation of the range below. But hood fan motor does not turn on 

automatically. (Normally, food fan motor should be operating at low 

speed.)

Hood lights do not turn on when LIGHT HI/LO button is pressed.

Hood fan motor does not rotate at all with touched FAN HI/LO button.

Speed of the hood fan motor does not change when the FAN HI/LO button 

is touched for this function.

Oven lamp does not light in cook cycle. (But it does light when door is 

opened.)

Fan motor does not operate. (Oven lamp and turntable motor operate.)

Turntable motor does not operate (Oven lamp lights and fan motor 

operate.)

Oven does not go into cook cycle when START button is touched

Oven seems to be operating but little or no heat is produced in oven load. 

(Food incompletely cooked or not cooked at all at end of cook cycle.)

Oven goes into a cook cycle but extremely uneven heating is produced in 

oven load (food).

Variable cooking does not operate properly except Cooking Power 10 (P-

HI) mode.

Function of DEFROST CENTER does not operate properly.

Oven goes into DEFROST CENTER but food is not defrosted well.

CK LOW VOLTAGE

CK NO POWER AT OUTLET

RE SHORT IN POWER CORD

CK OPENED OR SHORTED WIRING

CK HOOD MOTOR CAPACITOR

RE HOOD LAMP OR SOCKET

RE TURNTABLE MOTOR

RE FAN MOTOR

RE OVEN LAMP OR SOCKET

P

FOIL PATERN ON P.W.B.

O

DEFROST   CENTER

N

RELAYS (RY-5), (TY6)

N

RELAY (RY-4)

N

RELAY (RY-3)

N

RELAY (RY-2)

N

RELAY (RY-1)

M

KEY UNIT

L

CONTROL UNIT

K

HOOD FAN MOTOR 

J

HOOD HERMAL CUT-OUT 

I

MONITOR FUSE 

H

MONITOR SWITCH

G

SECONDARY INTERLOCK SYSTEM

F

PRIMARY INTERLOCK  SWITCH

E

TEMPERATURE FUSE OR THERMAL CUT-OUT

D

HIGH VOLTAGE CAPACITOR

C

H.V. RECTIFIER 

B

POWER TRANSFORMER

A

MAGNETRON