Sharp R1481 Manual
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Page 31
29 R-1480 R-1481 R-1482 1. Disconnect the power supply cord, remove the oven from wall and remove outer case (Refer to procedure of Removal of Oven from Wall and Outer case Removal.) 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Disconnect the wire leads from the fan motor and the chassis support. 5. Remove one (1) screw holding the hood duct to oven cavity. 6. Release the wire leads from the hole of the hood duct. 7. Lift up the fan motor side of the hood duct. 8. Remove...
Page 32
30 R-1480 R-1481 R-1482 1. Disconnect the power supply cord. 2. Open the door and block it open. 3. Remove the three (3) screws holding the base cover to the oven cavity 4. Remove the base cover from the oven cavity by pulling REMOVAL) 4. Lift the oven lamp cover up. 5. Now, the oven lamp and the socket are found. 6. Screw the oven lamp off from the lamp socket. 7. Now, the oven lamp is free. TURNTABLE MOTOR REMOVAL down and moving to the left slightly. 5. Disconnect the wire leads from the turntable...
Page 33
31 R-1480 R-1481 R-1482 the control panel. 17.Remove the key fixing plate from the control panel. 18.Tear the key unit from the key fixing plate. 19.Now, the key unit is free NOTES FOR KEY UNIT REPLACEMENT 1. Do not reuse the torn key unit because the performance of the adhesive becomes weak. 2. Before attaching a new key unit, wipe off remaining adhesive on the key fixing plate surfaces completely with a soft cloth soaked in alcohol. 3. When attaching the key unit to the key fixing plate, adjust the...
Page 34
32 R-1480 R-1481 R-1482 1. Disconnect the power supply cord and remove the oven from wall and remove outer case. (Refer to procedure of Removal of Oven from Wall and Outer case Removal) 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Remove the control panel assembly, referring to the procedure of CONTROL PANEL ASSEMBLY , CONTROL UNIT AND KEY UNIT REMOVAL. If the door sensing switch, secondary interlock switch and monitor switch do not operate properly due to a misadjustment,...
Page 35
33 R-1480 R-1481 R-1482 latch holes correctly. 6. Re-install the door stopper to the door assembly. 7. Re-install the hood exhaust louver to the oven cavity front face plate. Note: After any service to the door; (A) Make sure that door sensing switch and secondary interlock switch are operating properly. (Refer to chapter Test Procedures.) (B) An approved microwave survey meter should be used to assure compliance with proper microwave radiation emission limitation standards. After any servicing, make...
Page 36
34 R-1480 R-1481 R-1482 6 45 12 3 6 45 12 3 A B C D E F G HA B C D E F G H Figure S-1. Pictorial Diagram HIGH VOLTAGE RECTIFIER HIGH VOLTAGE CAPACITOR HIGH VOLTAGE WIRE A HIGH VOLTAGE COMPONENTS POWER TRANSFORMERPower Supply cord 120V 60Hz 1 2 3 WHT GRNBLK WHT GRNBLK CAVITY THERMAL CUT-OUT MAGNETRON TEMPERATURE FUSE WHTRED BLKREDBLK FAN MOTOR TURNTABLE MOTOR GRYORGWHTORG ORG RED WHT ORG BLK WHTHOOD LAMPS & SOCKETS Blue Marking Blue Marking OVEN LAMP & SOCKET to Chassis Support CN-E...
Page 37
35 R-1480 R-1481 R-1482 6 45 12 3 6 45 12 3 A B C D E F G HA B C D E F G H Figure S-2. Control Panel Circuit + – + – +– + – A 7 VRS1 (J1) D20 R110 R110 47 1/2w C110 0.033µ/250v C110 D25 D26 D27 D28 T1 D1 D1-D4 11ES1 Q20 KRA101M Q24 KRA101M R20 1k 1/2w RY4 RY5 RY1 RY2 NO NCRY3 Q25 KRA101M Q26 KRA101M Q28 KRA101MQ30 KRA101M Q27 KRC243MQ40 KRA101M MOTOR RUN CAPACITOR TURNTABLE MOTOR HOOD LAMP HOOD THERMO HOOD MOTOR COM(H) FAN MOTOR OVEN LAMP STIRRER MOTOR MICROHIGH LOW COMQ4...
Page 38
36 R-1480 R-1481 R-1482 6 45 12 3 6 45 12 3 A B C D E F G HA B C D E F G H Figure S-3. Printed Wiring Board DIP ,BFB 1 R10 C6C10 R4 R1 D4 (ZD2) S1 S2 P (R2)D1 SP40C5 C7 D25 D20 46 4847 RY4 RY5 T1 (470V) VRS1 (CN - A) CN - A AC(N) TTM RY3 AC(H)OL MICRO FM ZD3 ZD1 ZD4 CF1 (J15) R7 R40 27 28 29 30 31 32 (J11) (J10) (R76) (R100) (D70) D71 D72 D73 D74 D75 D76R77 R79 R80 R81 R82 R70 R71 R72 R73 35 3 1 B B B B B E E E E B E E E E E E B B B B B Q30 Q20 Q40 Q3 R83 R78 D77 (IC2) 34 42 C3 4356...
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37 R-1480 R-1481 R-1482 PARTS LIST Note: The parts marked ÒDÓ may cause undue microwave exposure. The parts marked Ò*Ó are used in voltage more than 250V. ¤ MARK: PARTS DELIVERY SECTION ELECTRIC PARTS 1- 1 FH-DZB012MRY0 M High voltage rectifier assembly 1 AK 1- 2 RC-QZA173WRE0 M High voltage capacitor 1 AR 1- 3 QFS-TA013WRE0 M Temperature fuse 150ûC (Magnetron) 1 AG 1- 4 RMOTDA182WRE0 M Turntable motor 1 AQ 1- 5 RMOTDA214WRE0 M Stirrer motor 1 AQ 1- 6 RTHM-B005MRE0 M Thermal cut-out N.O. 60ûC (Hood...
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38 R-1480 R-1481 R-1482 REF. NO. PART NO. ¤ DESCRIPTION QTY CODE IC1 RH-IZA876DRE0 J LSI 1 AW Q3 VSKRA101M//-3 J Transistor (KRA101M) 1 AB Q4 VSDTA123ES/-3 J Transistor (DTA123ES) 1 AA Q20 VSKRA101M//-3 J Transistor (KRA101M) 1 AB Q24-26 VSKRA101M//-3 J Transistor (KRA101M) 3 AB Q27 VSKRC243M//-3 J Transistor (KRC243M) 1 AB Q28 VSKRA101M//-3 J Transistor (KRA101M) 1 AB Q30 VSKRA101M//-3 J Transistor (KRA101M) 1 AB R1 VRD-B12HF432J J Resistor 4.3k ohm 1/2W 1 AH R2 VRD-B12EF152J J Resistor 1.5k...