ZMM Haskovo Joybook R48 Series Service Manual download pdf (Page 14)

PMOR3021S

PMOR3021B

PMOR3021R

CK = Check / RE = Replace

POSSIBLE CASE AND

DEFECTIVE PARTS

PROBLEM

TEST PROCEDURE

CONDITION

OFF

CONDITION

IDLE

CONDITION

MICROWAVE

COOKING

CONDITION

SENSOR

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 key is touched. (The

time of day should appear on the display with beep sound during normal con-

dition.)

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. (Normal-

ly, food fan motor should be operating at low speed.)

Hood lights do not turn on when Light pad is pressed.

Hood fan motor does not rotate at all with touched Fan pad.

Speed of the hood fan motor does not change when the Fan Options pad 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 strrer motor operate.)

Oven does not go into cook cycle when START pad 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 100% mode.

Stirrer motor does not operate. (Other parts operate.)

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

The oven Stops and "ERROR" is displayed or does not end during Sensor

Cooking condition. (Oven does not shut off after a cup of water is boiling by

Sensor Cooking.)

Oven stops at 32 seconds after starting.

P NOISE FILTER

CK LOW VOLTAGE

CK NO POWER AT OUTLET

RE SHORTED IN POWER CORD

CK OPENED OR SHORTED WIRING

CK HOOD MOTOR CAPACITOR

RE HOOD LAMP OR SOCKET

RE STIRRER MOTOR

RE FAN MOTOR

RE OVEN LAMP OR SOCKET

O HUMIDITY SENSOR (R2120J)

N FOIL PATTERN ON P.W.B.

M EASY DEFROST

L RELAY (RY-4)

L RELAY (RY-3)

L RELAY (RY-5, RY-6)

L RELAY (RY-1)

K KEY UNIT

J CONTROL UNIT

I HOOD FAN MOTOR

H HOOD THERMAL CUT-OUT

G MONITOR FUSE

F MONITOR SWITCH

STOP SWITCH

D PRIMARY INTERLOCK SWITCH

D SECONDARY INTERLOCK SWITCH

C OVEN THERMAL CUT-OUT

B INVERTER UNIT

A MAGNETRON

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ZMM Haskovo Joybook R48 Series Service Manual Page 14

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