Sharp R-320HQ Operation- User Manual
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Table of Contents:
- Page 2 – performed on each oven prior to release to the owner.; BEFORE SERVICING; . The owner of the unit should be instructed not to use the unit
- Page 3 – WARNING TO SERVICE PERSONNEL; Before Servicing; Disconnect the power supply cord , and then remove; After repairing; Reconnect all leads removed from components during
- Page 4 – MICROWAVE MEASUREMENT PROCEDURE; should not exceed 1mW/cm
- Page 5 – SHARP ELECTRONICS CORPORATION; SERVICE MANUAL; MICROWAVE OVEN; DANGER
- Page 6 – SPECIFICATION; GROUNDING INSTRUCTIONS
- Page 7 – CAUTION: DO NOT UNDER ANY CIRCUMSTANCES CUT OR RE-; OVEN DIAGRAM; Door opening button; The oven will not operate unless the door is securely closed.; Removable turntable; It will light when oven is operating door is open.; TOUCH CONTROL PANEL
- Page 8 – OPERATION; DESCRIPTION OF OPERATING SEQUENCE; OFF CONDITION
- Page 11 – DESCRIPTION AND FUNCTION OF COMPONENTS; DOOR OPEN MECHANISM; As the door goes to a closed position, the monitor switch; NOTE: C / T F U S E A N D M O N I T O R S W I T C H A R E; TURNTABLE MOTOR; If the wire harness or electrical components are short-
- Page 12 – TROUBLESHOOTING GUIDE
- Page 13 – PROBLEM; POSSIBLE CAUSE; TEST PROCEDURE
- Page 14 – MAGNETRON ASSEMBLY TEST; TEST PROCEDURES; PROCEDURE; the magnetron filament leads should indicate less than 1 ohm.; POWER TRANSFORMER TEST
- Page 16 – MONITOR SWITCH TEST; turntable and oven light will be activated by RY1.
- Page 17 – The following symptoms indicate a defective key unit.; TOUCH CONTROL PANEL ASSEMBLY TEST
- Page 18 – If the Key unit or the Control unit is defective.; KEY UNIT TEST
- Page 19 – ) Make a visual inspection of the varistor. Check for burned; FOIL PATTERN ON THE PRINTED WIRING BOARD TEST
- Page 20 – STEPS; AH SENSOR TEST
- Page 21 – touch the number pads 1 once and the number pad 4 once.
- Page 22 – OUTLINE OF TOUCH CONTROL PANEL; The touch control section consists of the following units.; ) Power Source Circuit; A switch to “tell” the LSI if the door is open or closed.; ) Back Light Circuit; Signal
- Page 25 – OUT; (1) Structure of Absolute Humidity Sensor; ABSOLUTE HUMIDITY SENSOR CIRCUIT; ) Absolute humidity sensor circuit; ventilation opening for sensing
- Page 26 – TOUCH CONTROL PANEL SERVICING
- Page 27 – OUTER CASE REMOVAL; WARNING AGAINST HIGH VOLTAGE:
- Page 28 – NOTE: When replacing the outer case, the 2 special; POWER TRANSFORMER REMOVAL
- Page 29 – POSITIVE LOCK; connector; CONTROL PANEL ASSEMBLY REMOVAL
- Page 30 – COOLING FAN MOTOR REMOVAL; Make sure that the axis of the shaft is not slanted.; TURNTABLE MOTOR REMOVAL; Shaft
- Page 31 – NOTE: When carrying out any repair to the door, do not; DOOR REPLACEMENT
- Page 32 – SEALER FILM
- Page 33 – HIGH VOLTAGE COMPONENTS
- Page 34 – LIQUID CRYSTAL DISPLAY
- Page 35 – Figure S-3. Printed Wiring Board of Power Unit
- Page 36 – PARTS LIST; DESCRIPTION
- Page 37 – HOW TO ORDER REPLACEMENT PARTS; MISCELLANEOUS
- Page 38 – OVEN AND CABINET PARTS
- Page 40 – Not replaceable items.
39
R - 32 0 H K
R - 320HQ
R-320HW
In the interest of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.
WARNING TO SERVICE PERSONNEL: Microwave ovens con-
tain circuitry capable of producing very high voltage and
current, contact with following parts may result in a severe,
possibly fatal, electrical shock. (High Voltage Capacitor, High
Voltage Power Transformer, Magnetron, High Voltage Recti-
fier Assembly, High Voltage Harness etc..)
TABLE OF CONTENTS
Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO
AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ................... INSIDE FRONT COVER
BEFORE SERVICING ...................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL ................................................................................................................ 1
MICROWAVE MEASUREMENT PROCEDURE ................................................................................................... 2
FOREWORD AND WARNING ............................................................................................................................... 3
PRODUCT SPECIFICATIONS .............................................................................................................................. 4
GENERAL INFORMATION ................................................................................................................................... 4
OPERATION .......................................................................................................................................................... 6
TROUBLESHOOTING GUIDE ............................................................................................................................ 10
TEST PROCEDURE ............................................................................................................................................ 11
TOUCH CONTROL PANEL ................................................................................................................................. 20
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 25
PICTORIAL DIAGRAM ........................................................................................................................................ 31
CONTROL UNIT CIRCUIT .................................................................................................................................. 32
PRINTED WIRING BOARD ................................................................................................................................. 33
PARTS LIST ........................................................................................................................................................ 34
PACKING AND ACCESSORIES ......................................................................................................................... 38
S4309R320HPW/
R - 3 2 0 H K
R-320HQ
R-320HW
MICROWAVE OVEN
MODELS
SERVICE MANUAL
SHARP CORPORATION
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Summary
40 R - 3 2 0 H KR - 32 0 H QR - 320HW PRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVEENERGY (a) Do not operate or allow the oven to be operated with the door open.(b) Make the following safety checks on all ovens to be serviced before activating...
1 R - 32 0 H KR - 320HQR-320HW WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowing parts may result in a severe, possiblyfatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Trans-former, M...
2 R - 3 2 0 H KR - 32 0 H QR - 320HW MICROWAVE MEASUREMENT PROCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm 2 at any point 5cm or more from the external surface of the oven, meas...
