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R -6280
SHARP
SERVICE MANUAL
S3702R6280J//
MICROWAVE
OVEN
In the interests of user-safety
the set should
be restored IO its ongina!
condition
and only parts identical
to those specified
should
be zsm
TABLE
OF CONTENTS
Page
FOREWORD
,....................,............I......................~....................~..............................................................,.....,...
1
CAUTION,
MICROWAVE
RADIATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~...........................................................~........
1
PRODUCT
DESCRIPTION
,..,.,...,,..................................,.~..........~...,...,..,.,...,.......,,.,..................,.........,..,......,,
2
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . ..*............................................................................................................................
3
SERVICING
. . . . . . . . ..~....................~............~.........................~.....................~...........................................................
COMPONENT
REPLACEMENT
AND ADJUSTMENT
PROCEDURES
MICROWAVE
MEASUREMENT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1;
PROCEDURE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PICTORIAL
DIAGRAM
AND SCHEMATIC
DIAGRAM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (..,..,......,...........,..,...,..
17
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................
18
PACKING
AND ACCESSORIES
,..~...........................,..................~.......,,......,,...,.......,........,,..,.....,..~.............
22
SHARPCORPORATION
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Summary of Contents for Sharp R-6280
- Page 1 R -6280 SHARP SERVICE MANUAL S3702R6280J// MICROWAVE OVEN In the interests of user-safety the set should be restored IO its ongina! condition and only parts identical to those specified should be zsm TABLE OF CONTENTS Page FOREWORD ,....,....I......~....~..............,..,........~............~..
- Page 2 R -6280...
- Page 3 R-6280 SERVICE MANUAL SHARP PRODUCT DESCRIPTION MICROWAVE OVEN R-6280 FOREWORD This Manual has been prepared to provide Sharp Corp. Service Personnel with complete Operation and Service Information the SHARP MICROWAVE oven, R-6280. It is recommended that service personnel carefully study...
- Page 4 R -6280 PRODUCTION DESCRIPTION EXPLANATION OF MICROWAVE COOKING The Sharp Microwave Oven uses microwave energy to moisture content, like most foods, will absorb micro- produce heat in the food to be cooked. Unlike con- wave energy. As the microwave energy at a frequency...
- Page 5 R-6280 OPERATION NORMAL COOKING SEQUENCE To start cooking: Note: If the oven door IS opened during the cook cycle, Place the food to be cooked in the oven and close the door oven will go out of the cook cycle (no microwave firmly.
- Page 6 R -6280 0 ‘i3 .- *- c%r” rlu’ $;;s ; %;!9f: PO is’ ,$ p pJ”; ‘G t !I; ? m!& ‘i r”: :,i~~~~~~~~~~~ >= gEu, E 070: k z=g- ; 8’;c= CL I =0 XL 0 .- gzo. ?YEk 1”...
- Page 7 R-6280 DESCRIPTION FUNCTION OF COMPONENTS OVEN TEMP. FUSE As the door goes to a closed position, the monitor The temp. fuse located on the top wall of the oven switch contacts are first opened and then the upper cavity is designed...
- Page 8 R -6280 TIMER OVEN LAMP Timer switch contacts: The oven lamp illuminates the interior of the oven so The timer switch contacts are mechanically opened that food being cooked be examined visually closed by turning the timer knob located on the timer through the door window without...
- Page 9 R-6280 PROBLEM POSSIBLE CAUSE TEST PROCEDURE CORRECTION IDLE CONDITION / Replace oven lamp. 1 Wi;!i;“,; timer set, oven lamp do 1 Defective oven lamp. j Defective timer contacts. I Procedure I Check wiring. / Open or loose wire connection. COOKING...
- Page 10 R-6280 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MAGNETRON ASSEMBLY TEST DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING OVEN COMPO- NENTS OR WIRING. To test for an open fiiament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron...
- Page 11 R-6280 TEST PROCEDURES (CONT’D) PROCEDURE COMPONENT TEST LETTER 3. Water container should be one (1) litre beaker made of Pyrex glass and its diameter approxi- mately 12 cm. 4. Room temperature should be around 20 “C. 5. Power supply voltage...
- Page 12 R -6280 TEST PROCEDURES (CONT’D) PROCEDURE COMPONENT TEST LETTER MONITOR SWITCH TEST Before performing this test, make sure that the cook (lower iatch)switch is operating properly referring to the above Switch Test Procedure. Check the monitor switch operation by using the ohmmeter as follows.
- Page 13 R-6280 TEST PROCEDURES (CONT’D) PROCEDURE LETTER COMPONENT TEST VARI-TIM ER TEST With 240 volts A.C. applid to the vari-motor coil (3) and (4), check for continuty between vari-switch contacts (1 )and (2). When the variable cooking control set at HIGH position,...
- Page 14 R -6280 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING: To avoid possible exposure to microwave There is a broken door hinge or support. energy; The door is bent or warped. Before operating oven There is any defective parts in the latch, oven Make sure that unlatching door slowly is ac-...
- Page 15 UPPER LATCH SWITCH, COOK (LATCH) SWITCH AND MONITOR SWITCH REMOVAL Re-install 1. Disconnect the oven from the power supply and remove the 1. Re-install each outer case. switch in its place. The upper latch switch is in the upper position and the 2.
- Page 16 R-6280 LATCH SWITCH, COOK (LATCH) SWITCH AND MONlTOR SWITCH ADJUSTMENT in case the upper latch switch and cook (latch) switch do not UPPER operate properly due to a misadjustment, the following adjust- LATCH SWITCH ment should be taken. 1. Loosen the two (2) screws holding the latch hook.
- Page 17 R -6280 DOOR REPLACEMENT ADJUSTMENT DOOR ADJUSTMENT DOOR REPLACEMENT When removing and/or loosening hinge such as in the case of a 1. Disconnect the oven from the power supply and remove the door replacement, the foilowing adjustment criteria are taken. outer case.
- Page 18 R -6280 MICRQWAVE MEASUREMENT After the adjustment of the door latch switches, moni- Recommended instruments are: tor switch and door are completed individually or col- NARDA 8100 NAR DA 8200 lectively, the following leakage test must be performed with a survey instrument and it must be confirmed that HOLADAY...
- Page 19 R-6280 0 !. :E I IB...
- Page 20 R-6280 PARTS LIST Note : The voltage supplied to the parts “+” are greater than 250V. / Q’TY 1 CODE DESCRIPTION PART REF. ELECTRIC PARTS Htgh voltage capacrtor QZAO34WREO Rectrfrer DZAOO8WREO DZAOl 2WRE0 Short protector Fuse M6.3 QFS- COO1 9WREO...
- Page 21 R-6280 Note : The voltage supplied to the parts ‘lCN are greater than 250V. DESCRIPTION Q’TY CODE REF. NO. PART NO. GFTA- AOO5WRWO Oven lamp access cover 4-14 4-l 5 PCUSUAO52WRPO Cushion 4-16 LANGTAl4OWRWO Oven supporting angle DOOR PARTS CDORFAl...
- Page 22 R-6280 CABINET PARTS - -I CONTROL PANEL PARTS...
- Page 23 R-6280 WEN PARTS 4-10 (G-g), r ---------w-w- ------_ -&T$ T x4...
- Page 24 R -6280 MISCELLANEOUS DOOR PARTS PACKING AND ACCESSORIES E’ DOOR PROTECTION SHEET X LSPADP0336WREOl F’ TURNTABLE TRAY * Not Replaceable Items ‘87 0 SHARP CORP. (3N0.75E) Printed in Japan...
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