Parts/Service for R-930CS

Parts/Service for R-930CS

Brand: SHARP

Category: Home Appliances

Document Type: Parts/Service

Language: EN

Uploaded: Nov. 21, 2025, 7:31 p.m.

Manual Publish Date: 1999-01-01

OFF CONDITION

Closing the door activates sensing switches. The oven lamp turns on when the door is opened.

COOKING CONDITION

Program time and power level using number pads and power level pad. Touch START. The oven uses relays to power various components including the turntable motor, convection motor, and high voltage components for microwave generation.

POWER LEVEL P-0 TO P-90 COOKING

Microwave power is supplied intermittently through relay RY-2, varying the ON/OFF time ratio.

CONVECTION COOKING CONDITION

Program temperature and time. Touch CONVECTION, Temperature pad, and START. The oven lamp, turntable motor, cooling fan motor, and convection motor are energized. The heating element is controlled by RY3.

AUTOMATIC MIX COOKING CONDITION

Touch HIGH MIX/ROAST or LOW MIX/BAKE. Program time. Touch START. The oven operates in a convection cooking mode, alternating between convection heat and microwave energy.

SENSOR COOKING CONDITION

Foods are cooked based on sensed steam. The microprocessor calculates cooking time and power. The oven stops when the sensor detects sufficient steam.

FIRE SENSING FEATURE

Monitors oven cavity temperature. If a fire is detected, relays are switched off, the damper door is closed, and operation stops.

Troubleshooting and error codes

TEST PROCEDURE PROBLEM CONDITION COOKING CONDITION POSSIBLE CAUSE AND DEFECTIVE PARTS
OFF CONDITION (MICROWAVE) (CONVECTION) (SENSOR COOKING)
A Home fuse blows when power cord is plugged into wall receptacle. O MAGNETRON
B Monitor fuse blows when power cord is plugged into wall receptacle O POWER TRANSFORMER
C 88:88 does not appear in display when power cord is first plugged into wall receptacle. O H.V. RECTIFIER ASSEMBLY
D Display does not operate properly when STOP/CLEAR pad is touched. (The time of day should appear on the display with beep sound.) O HIGH VOLTAGE CAPACITOR
E Oven lamp does not light with door opened. O SECONDARY INTERLOCK SWITCH
F Oven lamp does not light in cook cycle. (It light when door is opened). O O PRIMARY INTERLOCK SYSTEM
G Cooking cycle runs 1 minute then shuts down. O O MONITOR SWITCH
H Oven lamp light, but turntable motor does not operate. O MONITOR FUSE
J Turntable motor operates normally but cooling fan motor does not operate. O MAGNETRON TEMPERATURE FUSE
K Oven does not go into a cook cycle, when START pad is touched. O CONV. THERMAL CUT-OUT
L Low or no power is produced during microwave cooking (The food is heated incompletely or not heated at all) O THERMISTOR
M Extremely uneven heating is produced in oven load (food). O DAMPER MOTOR
N Function of variable cooking does not operate properly except HIGH power. O DAMPER SWITCH
P Function of COMPU DEFROST does not operate properly. O TOUCH CONTROL PANEL
Q CONV indicator lights, but oven does not go into cook cycle when START pad is touched. O KEY UNIT
R CONV indicator lights, but heating element does not heat. O RELAY RY-1
R Temperature in the oven cavity is lower or higher than preset. O O RELAY RY-2
R Cooling fan motor runs intermittently or all the time. O O RELAY RY-3
R Convection cycle runs 4 minutes and 15 seconds then shuts down. O RELAY RY-4
R Oven in the sensor cooking condition but AH sensor does not end or AH sensor turns off about max. 30 min. after start. O RELAY RY-5
S RELAY RY-6
T COMP. DEFROST
U FOIL PATERN ON PWB.
Replace OVEN LAMP OR SOCKET O O O AH SENSOR
Replace FAN MOTOR O O
Replace TURNTABLE MOTOR O
Replace CONVECTION MOTOR O O
Check LOOSE WIRING O O O O
Check SHORTED IN POWER CORD O
Check NO POWER AT OUTLET O
Check LOW VOLTAGE O
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