User manual SHARP R-3S56 SERVICE MANUAL

[. . . ] R-3S56 SERVICE MANUAL S9510R3S56PX/ MICROWAVE OVEN MODEL R-3S56 In interests of user-safety the oven should be restored to its original condition and only parts identical to those specified should be used. TABLE OF CONTENTS Page CAUTION, MICROWAVE RADIATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Output to control oscillation input of XOUT. Internal clock oscillation frequency input setting. The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to XIN terminal. Signal is input to reset the LSI to the initial state when power is supplied. Temporarily set to "L" level the moment power is supplied, at this time the LSI is set. Magnetron high-voltage circuit driving signal. In Low operation, the signals holds "L" level during microwave cooking and "H" level while not cooking. In other cooking modes (70%, 50%, 30%, 10%) the signal turns to "L" level and "H" level in repetition according to the power level. Oven lamp, turntable motor and cooling fan motor driving signal. (Square Waveform : 50Hz) To turn on and off the control relay. The pulse signal (50Hz) is delivered to the control relay driving circuit and cook relay control circuit. Refer to the touch control panel circuit about the relation between signals and digits. Normally, one pulse is output in every synchronized signal period, and input to the light emitting diode. Refer to the touch control panel circuit for the relationship between signals and indicators. Normally, one pulse is output in every synchronized signal period, and input to the anode of the light emitting diode. A pulse signal is input to R81-R83 terminal while one of diode D91 line switches on switch matrix is touched. A pulse signal is input to R81-R83 terminal while one of diode D92 line switches on switch matrix is touched. A pulse signal is input to R81-R83 terminal while one of diode D93 line switches on switch matrix is touched. 19 20 R63 INT2 OUT IN Segment data signal. Signal synchronized with commercial source frequency(50Hz). This is basic timing for time processing of LSI. 15 3 RESET IN 4 R70 OUT 5 R71 OUT 6 7 -10 R72 R40 - R43 OUT OUT 11-13 R50 - R52 OUT 14 15 16 VSS R53 R60 IN OUT OUT R-3S56 Pin No. 21 Signal R81 I/O IN Description Signal coming from touch tact switch. [. . . ] LATCH SWITCH NOTE: " CONTROL UNIT CONTROL UNIT RY-1 A1 1ST. LATCH SWITCH OL OL OVEN LAMP Figure O-1 Oven Schematic-OFF Condition Figure O-2 Oven Schematic-ON Condition FM FAN MOTOR TURNTABLE MOTOR " indicates components with potential above 250V. 25 MONITOR RESISTOR 0. 8/20W POWER TRANSFORMER MAGNETRON OVEN LAMP FM FAN MOTOR TURNTABLE MOTOR TTM TTM MONITOR SWITCH MONITOR SWITCH MONITOR RESISTOR 0. 8/20W POWER TRANSFORMER CAPACITOR 0. 94µ AC2000V CAPACITOR 0. 94µ AC2000V H. V. RECTIFIER MAGNETRON R-3S56 F E D C H A B G R-3S56 ORG NC WHT WHT OVEN CAVITY BACK PLATE 1 RED COM BLK FAN MOTOR MONITOR RESISTOR ORG ORG GRY 1ST LATCH SWITCH THERMAL CUT-OUT 95°C BLU NEUTRAL 1 COM GW RH YT POWER SUPPLY CORD W H T MONITOR SWITCH TEMP. FUSE 150°C (OVEN) RED WHT OVEN LAMP & SOCKET SCREW EARTH O R G NO GREEN/YELLOW WIRE 2 2 R E D LIVE B R N RED WHT TOUCH CONTROL PANEL FUSE HOLDER & FUSE M6. 3A 3 3 R E D TEMP. [. . . ]