Panasonic NE9051BBQP Service Manual Download Page 28 | Manualshive

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19 Digital programmer Circuit

DPC Schematic 1

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NE-9051BBPQ

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Summary of Contents for NE9051BBQP

Page 1: ... DIAGRAM FOR First Choice Group Blakeney Way Kingswood Lakeside Cannock Staffs WS11 8LD TEL 01543 577778 FAX 01543504141 Email enquires firstchoice cs co uk Web www firstchoice cs co uk Microwave Combi NE9051BBQP ...

Page 2: ... 2001 Matsushita Electric Industrial Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law NE 9051BBPQ Microwave Oven MOP0110037C2 ...

Page 3: ...g 9 8 Parts Replacement Procedure 11 9 Component Test Procedure 14 10 Measurements and Adjustments 16 11 Troubleshooting guide 17 12 Digital Programmer Circuit Troubleshooting Guide 20 13 Main Parts List 21 14 Exploded View 22 15 Door Assembly 23 16 Escutcheon Base 24 17 Packing And Accessories 25 18 Key Board Matrix 26 19 Digital programmer Circuit 27 20 Digital programmer circuit parts list 29 C...

Page 4: ...circuit and becomes very hot 3 Do not attempt to repair the inverter PCB as this can be very dangerous Replace the high voltage inverter circuit as a complete unit 4 Do not adjust or tamper with the pre set volume on the inverter board It is very dangerous to adjust this pre set without proper test equipment 5 Do not operate the microwave oven when the inverter grounding plate and fixing screw is ...

Page 5: ...3 Control Panel 4 E 9051BBPQ ...

Page 6: ...4 Operation And Digital Programmer Test Procedure 4 1 Setting the Clock 4 2 Single Stage Cooking 4 3 2 or 3 Stage Cooking 4 4 Function A Memory Pads 5 NE 9051BBPQ ...

Page 7: ...4 5 Function B Memory Pads Programming 4 6 Function B Operation 4 7 Program Lock 4 8 Auto Weight Defrost 4 9 Double Quantity x 2 Function 6 E 9051BBPQ ...

Page 8: ...5 Schematic And Wiring Diagram 7 NE 9051BBPQ ...

Page 9: ... to cool the oven and its electronic components 6 2 Auto weight defrost When an auto control feature is selected and the start pad pressed 1 The digital programmer circuit determines the power level and the cooking time and indicates the operating state in the display The table shows the corresponding cooking times for each category and its respective weight 2 When the cooking time in the display ...

Page 10: ... U GROUNDING Check the high voltage inverter power supply circuit grounding The high voltage inverter power supply circuit board must have a proper chassis ground the inverter grounding bracket must be connected to the chassis If the inverter board is not grounded it will expose very high voltages and cause extreme DANGER Be sure that the inverter circuit is properly grounded via the inverter eart...

Page 11: ... after repair 1 After repair or replacement of parts make sure that the screws of the oven etc are neither loose nor missing Microwaves might leak if screws are not properly tightened 2 Make sure that all electrical connections are tight before inserting the plug into the wall outlet 3 Check for microwave energy leakage Refer to procedure for measuring microwave energy leakage CAUTION MICROWAVE RA...

Page 12: ...to the magnetron 5 Remove the connector CN701 and CN702 from the inverter PCB 6 Remove the two screws holding the inverter base to the chassis See figure 2 7 Carefully remove the inverter PCB and support base from the oven 8 Remove the air guide E by un clipping the catch hooks 9 Remove the four screws holding the PCB to the inverter support base Caution when replacing the inverter power supply U ...

Page 13: ...tts on DPC contacts 8 5 Fan Motor 1 Remove two screws and remove the tie bar 2 Disconnect the two lead wires from the fan motor terminals 3 Disconnect all lead wires from the noise filter 4 Remove the noise filter 5 Remove the air guide by removing the two screws 6 Remove the two screws holding the orifice assembly 7 Remove the two screws holding the fan motor assembly 8 Detach the orifice assembl...

Page 14: ...able Motor 1 Remove the motor cover by breaking off at the 8 spots indicated by the arrows 2 Disconnect the two lead wires connected to the turntable motor 3 Remove the turntable motor by removing the two screws Note After breaking off the motor cover make sure that cut off portions are properly trimmed off or bent inside so that no sharp edges are exposed Note To secure the motor cover use a 4 x ...

Page 15: ...0Ω Close Secondary Latch switch infinite Ω Open 0Ω Close Power relay B infinite Ω Open infinite Ω Close 9 2 Short Switch and Monitor Circuit 1 Unplug the lead wires from the HV inverter primary terminals 2 Connect the test probes of the ohm meter to these leads 3 Test the continuity of the short switch with the door open and the door closed using the lowest ohm scale Door Open Door Closed Monitor ...

Page 16: ...erter or magnetron See troubleshooting of the inverter circuit and magnetron on P 20 to determine if the inverter power supply is still functioning 9 5 Inverter Power Supply Caution DO NOT try to repair this inverter power supply Replace as a whole H V Inverter Unit Figure 3 Inverter Power Supply Diagram 15 NE 9051BBPQ ...

Page 17: ...y tighten the screws holding the door hook assembly to the oven assembly 3 Reconnect the short switch primary switch and secondary latch switches and check the continuity of the monitor circuit and latch switches by following the component test procedures on page 17 10 2 Measurement of microwave output The output power of the magnetron can be determined by performing the IEC standard test However ...

Page 18: ...do otherwise may result in a false reading or damage to your meter When disconnecting a plastic connector from a terminal you must hold the plastic connector and not the lead wire otherwise the lead wire may become open circuit 7 Do not touch any parts of the circuitry on the digital programmer cicruit since static electric discharge may damage this control panel Whilst working on this board ensur...

Page 19: ...er a short time in micropower mode conduct the following test The microwave oven must be set in test mode to activate the self diagnostic failure code system SELF TEST MODE When oven is set in test mode place water load in oven set micropower to high and time to one minute press start H97 H98 appears in display window a short time after start pad is pressed and there is no microwave oscillation 18...

Page 20: ...e in micropower mode conduct the following test The microwave oven must be set in test mode to activate the self diagnostic failure code system SELF TEST MODE When oven is set in test mode place water load in oven set micropower to high and time to one minute press start H97 H98 appears in display window a short time after start pad is pressed and there is no microwave oscillation Troubleshooting ...

Page 21: ...12 Digital Programmer Circuit Troubleshooting Guide How to test the semiconductors Figure 2 20 E 9051BBPQ ...

Page 22: ...TCH SWITCH 1 L 3C2 2 10 E31384830AP HOOK SPACER C 1 11 E31374830AP HOOK SPACER B 1 12 2M236 M42G1 MAGNETRON 1 13 XTWANE4 12B SCREW 4 14 E4008 1640 FAN BLADE 1 15 E400A4760JP FAN MOTOR 1 16 E42094N30BP LOWER ORIFICE 1 17 E610T5D00BP OVEN LAMP UNIT 1 18 E20994N30BP REINFORCEMENT BRACK 1 19 E40254N40GS AIR GUIDE A 1 20 E40474V00BP AIR GUIDE E 1 21 E10014N30BP BASEPLATE 1 22 E030E4N30BP HV LEADWIRE 1 ...

Page 23: ...14 Exploded View 22 E 9051BBPQ ...

Page 24: ...P DOOR E ASSEMBLY 1 D3 E30214000AP DOOR KEY SPRING 1 D4 E30184L00GS DOOR KEY 1 D5 E30854N30BP DOOR C 1 D6 E30064N30BP UPPER HINGE 1 D7 E31454N00BP DOOR SCREEN A 1 D8 E30844V00SBP DOOR EMBLEM 1 NOTE When ordering any Door component also order door C as this part may become damaged during disassembly 23 NE 9051BBPQ ...

Page 25: ...DPC AU 1 E6 E66164L00GS RIBBON CABLE 1 E7 E82564V00SBP DOOR OPENING LEVER 1 E8 E603Y5D20BP DPC DU 1 E9 E83264L10BP DISPLAY SHEET 1 E10 E00075F70BP NAME PLATE 1 E11 E80074L00SGS SPRING 1 E12 E60704V00SBP INSULATION SHEET 1 NOTE Please order the escutcheon base and name plate together NOTE When replacing the stainless escutcheon assembly be sure that the fascia is earthed to the back plate via the e...

Page 26: ...035F70BP COOK BOOK 1 P4 E01695F70BP SERVICE CENTER LIST 1 P5 E01134N30BP TRAY STYROL 1 P6 E01084N30BP TRAY PACKING 1 P7 E01025F70SBP CARTON BOX 1 P8 E01054N30BP LOWER FILLER 1 P9 E01064N70GS VINYL BAG 1 P10 E01076700BP DOOR SHEET 1 P11 E01926430GP PROTECTOR SHEET 1 P12 E01044N30BP UPPER FILLER 1 P13 E00495F70BP OPERATING GUIDE 1 25 NE 9051BBPQ ...

Page 27: ...18 Key Board Matrix 26 E 9051BBPQ ...

Page 28: ...19 Digital programmer Circuit DPC Schematic 1 27 NE 9051BBPQ ...

Page 29: ...DPC Schematic 2 28 E 9051BBPQ ...

Page 30: ...1R0 Carbon resistor 1 E62604V00BP Print Board A 1 20 2 E603Y5D20BP DPC DU Ref No Part No Description Qty Remarks CN5 AEEM19FEBVKN 19 PIN CONNECTOR 1 CN1 AEEMXD05507W 7 PIN CONNECTOR 1 RY1 AEGG5G1A12 RELAY 1 12V RY2 RY3 AEBGG5N1A12 RELAY 2 12V D1 ERZV10D511CS VARISTOR 1 1C25 AEICP25011HL OPTICAL COUPLER 1 D26 AESTS1WBA60B DIODE BRIDGE 1 BZ310 EFBAH20C001 BUZZER 1 2KHz IC10 ETXMJ197X1BG SWITCH POWER...

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