Panasonic NE-1878BPQ Service Manual Download Page 1

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Order Number MOD1806497CE

Microwave Oven

Model No.

NE-1878BPQ

Destination : United Kingdom

TABLE OF CONTENTS

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1 Safety Precautions

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2 Specifications

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3 Location of Controls and Components

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4 Operating Instructions

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5 Service Mode

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6 Troubleshooting Guide

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7 Disassembly and Assembly Instructions

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8 Measurements and Adjustments

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9 Dimensions

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10 Block Diagram

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11 Wiring Connection Diagram

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12 Exploded View and Replacement Parts List

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Summary of Contents for NE-1878BPQ

Page 1: ...om TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions 2 2 Specifications 3 3 Location of Controls and Components 4 4 Operating Instructions 5 5 Service Mode 17 6 Troubleshooting Guide 21 7 Disassembly and Assembly Instructions 31 8 Measurements and Adjustments 37 9 Dimensions 38 10 Block Diagram 39 11 Wiring Connection Diagram 40 12 Exploded View and Replacement Parts List 42 ...

Page 2: ...2 1 Safety Precautions ...

Page 3: ...LOW P3 P2 30 25 DEFROST P1 340 W OFF P0 0 HEAT FROM TOP DOWN PU1 PU2 50 25 HEAT FROM BOTTOM PL1 PL2 50 25 Frequency 2 450 MHZ Outside Dimensions W D H 422 mm 476 mm 337 mm Cavity Dimensions W D H 330 mm 310 mm 175 mm Net Weight 17 5 kg Timer Maximum programmable time for single stage heating P1 and P0 30 minutes P10 P2 PU1 PL2 15 minutes Specifications subject to change without notice ...

Page 4: ...4 3 Location of Controls and Components 3 1 Outline diagram ...

Page 5: ...5 4 Operating Instructions 4 1 Operation procedure ...

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Page 17: ...ts the oven from operating even if any part is replaced and it remains displayed until the stored failure code is erased Erase the code before conducting an oper ation test If F 97 or FE 7 code failure occurs until a second time you are taken back to the initial display screen If the failure occurs a third time this failure code is displayed If F 98 or FE 8 code failure occurs until a third time y...

Page 18: ...ng of H V Inverter Fan Motor fan motor drive circuit F92 FE2 Magnetron failure Detection of A K short circuit Press Stop Reset button Magnetron F95 FE5 Inverter actuation signal failure At startup of inverter an actuation signal has not been input Press Stop Reset button Inverter connector disconnection Latch adjustment failure F96 FE6 Inverter actuation signal failure During non actuation of inve...

Page 19: ...cel the FILt sign 5 4 How to cancel rFL sign in the display rFL is displayed if the ceiling plate is removed Place the ceiling plate securely The oven is inoperative without it Procedure Display Remarks 1 Door open 0 2 Press Start key and 8 at the same time to display self diag nosis Example F33 0000 is displayed if any error have not been occurred yet 3 While the display is shown press Pause Canc...

Page 20: ...tion for 1 minute CHEC is displayed 2 Door open Initial display condition 3 Press Start key and 4 at the same time Example Number of times of using magnetron is dis played When the number of times of use is 100 or below the display rounds down the number 4 Press Pause Cancel key within 3 seconds CHEC display is canceled Reset the number of times of use 5 Display returns to the initial screen in 3 ...

Page 21: ...arging high voltage capacitor When the confirmation of power on is performed always discharge the capacitor as shown below 6 3 1 Method of discharging the high voltage capacitor Be sure to unplug the AC cord leave it for 30 sec and then unplug the connector of magnetron Short circuit the chassis lower plate oven etc and inverter terminal of the high voltage lead wire then heater terminals of the m...

Page 22: ...22 6 4 Power cannot be turned on Power cannot be turned on Opening the door does not indicate 0 Keys do not work ...

Page 23: ...23 6 5 10A FUSE blow out 1 Power cannot be turned on Opening the door does not indicate 0 Keys do not work ...

Page 24: ...24 6 6 10A FUSE blow out 2 In several seconds after starting cooking operation stops by displaying FE 7 ...

Page 25: ...several 10s seconds after starting cooking operation stops by displaying FE 5 F 95 FE 7 FE 8 F 98 6 7 1 F 95 F 97 F 98 are displayed Check the circuit for upper magnetron In the case of FUSE 1 10A FUSE upper side blow out defect power cannot be supplied ...

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Page 27: ...27 6 7 2 Displays FE 5 FE 7 FE 8 Check the circuit for lower magnetron ...

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Page 29: ...29 6 7 3 How to check the magnetron when indicating F 92 or FE 2 When F 92 FE 2 is indicated inspect by using the following procedure ...

Page 30: ...inverter Mainly use failure diagnosis of F97 FE7 F98 FE8 Caution Polarity of a tester is shown below Use the tester as shown for measurement Otherwise misjudgment may occur 6 7 4 2 How to check an IGBT 6 7 4 3 How to check a diode bridge 6 7 4 4 How to check a high voltage diode 6 7 4 5 How to check a magnetron Use failure diagnosis mainly by F97 FE7 F98 FE8 particularly by F92 and FE2 ...

Page 31: ...el White arrow 11 screws 7 2 Magnetron 1 Remove the cabinet and back panel Refer to 7 1 Cabinet back panel 7 2 1 Exhaust guide 1 Remove the connector CN16 of thermistor BU 2 Unhook the lead wire from the hook and holder 3 Remove the exhaust guide C Black arrow 4 screws 7 2 2 Magnetron upper 1 Remove the high voltage lead wire of the magnetron upper High voltage lead wire 2 places before and behind...

Page 32: ...re harness cut the lead wire of exhaust thermistor at the thermistor side bundle 3 In the lead wire harness cut the lead wire of exhaust thermistor at the connector side bundle 4 Remove the exhaust thermistor Black arrow 2 screws Leave the remaining lead wire of the exhaust thermistor in the lead wire harness as they are bundled When installing bundle the lead wire of the exhaust thermis tor with ...

Page 33: ...lock upper Black arrow 5 screws 4 Remove the inverter lead wire and high voltage lead wire from each hook and holder 5 Remove the cover White arrow 1 hook 6 Remove connectors CN701 CN702 CN703 7 Remove the H V inverter Black arrow 2 screws white arrow 3 hooks 7 5 2 H V inverter lower 1 Remove the inverter lead wire and high voltage lead wire from each hook and holder 2 Remove the high voltage lead...

Page 34: ... It will be used for attachment 4 Remove the washer Tilted arrow 1 screw 5 Remove the escutcheon base U Black arrow 3 screws bottom side circle 3 hooks 7 6 1 Membrane switch 1 Remove the escutcheon base U Refer to 7 6 Operation unit Escutcheon base U 2 Remove escutcheon A B and D Flatten the securing hook of escutcheon A and remove it from the escutcheon base U 3 Separate the membrane switch from ...

Page 35: ...d right sides of the ceiling plate toward inside until disengaged When installing align the 3 protrusions on the back and then engage the hooks on both sides 7 9 Shelf 1 Remove the cabinet Refer to 7 1 Cabinet back panel 2 Remove the shelf In the screw driver insertion hole located at the left of the oven insert a screw driver and press down the handle to lift up the shelf Hole diameter approx 8mm...

Page 36: ... AU and door C and remove door C by disengaging the hook of door C Note Door C is held on door EU by using hooks When the hook is broken replace the door C 2 Remove the handle Black arrow 2 screws 3 Remove the door AU Black arrow 8 hooks Disengage the hooks of door AU engaged with door EU ...

Page 37: ...surement of microwave output The output power of magnetron can be determined by perform ing IEC standard test procedures However due to the com plexity of IEC test procedures it is recommended to test the magnetron using the simple method outlined below Necessary Equipmet 1 liter beaker Glass thermometer Wrist watch or stopwatch NOTE Check the line voltage under load Low voltage will lower the mag...

Page 38: ...38 9 Dimensions ...

Page 39: ...39 10 Block Diagram Upper Lower correspond to the upper and lower magnetron ...

Page 40: ...40 11 Wiring Connection Diagram 11 1 Wiring Connection Diagram ...

Page 41: ...or Signal Switch Open OFF ON OFF Close ON OFF ON Relay Operation Relay 2 RL2 Fan motor stirer motor ON OFF Relay 3 RL3 Inverter upper input 230 240V ON OFF ON when cooking is set Relay 4 RL4 Inverter upper input 230 240V ON OFF ON when cooking is set Door condition Oven lamp Open ON Close OFF Condition Rotation on or off During cooking Rotation After cooking 20 sec when use frequency was low to 1 ...

Page 42: ...42 12 Exploded View and Replacement Parts List 12 1 Exploded view and parts list ...

Page 43: ...K3E20P6 ANTENNA U 1 UPPER 28 A202V 3B10 ANTENNA BU 1 LOWER 29 A3020 3853 DOOR HOOK A 1 30 A3136 3470 HOOK SPACER A 1 31 A31373F90BP HOOK SPACER B 1 32 A3138 3470 HOOK SPACER C 1 33 ANE32398U0AP SPRING 1 34 ANE32628U1AP SPRING B 3 35 A393C 3B10 DOOR HOOK U 1 36 A400B 3280 AIR FILTER FRAME 1 37 A4026 3B10 AIR GUIDE B 1 38 A402N3J90BP EXHAUST GUIDE AU 1 39 A4114 3J00 EXHAUST GUIDE C 1 40 A4091 3290 S...

Page 44: ...CTION SWITCH XTT4 8RDN SCREW 2 4x8 FOR EXHAUST GUIDE F WASHER XTWANE4 8BN SCREW 7 4x8 FOR EXHAUST GUIDE AU FAN MOTOR PCB OVEN LAMP DETECTION SWITCH BRACKET DETECTION SWITCH XTW4 8QJ SCREW 2 4x8 FOR H V INVERTER XTWA4 8SJ SCREW 9 4x8 FOR AIR GUIDE B THERMISTOR BU BRACKET EARTH LEAD WIRE HAR NESS EARTH XTC4 10BC SCREW 7 4x10 FOR CABINET BODY BASE XTN4 F10BJ SCREW 1 4x10 FOR RELAY PCB XTW4 10TJ SCREW...

Page 45: ...65202AP DOOR KEY B 1 LOWER D5 A301A3J90BP DOOR AU 1 D6 A301H 3850 DOOR KEY LEVER BU 1 D7 A301Q3J90BP DOOR EU 1 D8 A2011 3E10S DOOR KEY SPRING 1 D9 ANE30562Q0AP HANDLE PIN A 2 D10 A30703170GP HANDLE PIECE A 1 D11 ANE3081P60AP DOOR HINGE SPACER 1 D12 ANE30858U0AP DOOR C 1 D13 ANE31348U0AP HANDLE PIECE B 1 D14 A31863J90BP DOOR PANEL 1 D15 A390L3J90BP DOOR U 1 ...

Page 46: ...escription Pcs set Remarks T1 A603M 3J00 PC BOARD B U 1 T2 A630Y3J90BP MEMBRANE SWITCH 1 T3 ANE80018U0AP ESCUTCHEON A 1 T4 A80023E20P6 ESCUTCHEON B 1 T5 A80063E20P6 ESCUTCHEON D 1 T6 A8016 3B10 SPACER 1 T7 A800L3J90BP ESCUTCHEON BASE U 1 ...

Page 47: ...CASE PAPER 1 P2 A0104 3J00 UPPER FILLER 1 P3 A0105 3J00 LOWER FILLER 1 P4 A01065202AP VINYL COVER 1 P5 ANE01072Q0AP DOOR SHEET 1 P6 A01083J90BP TRAY PACKING 1 P7 A01453E20P6 DOOR SHEET B 1 P8 A2011 3E10S CEILING PLATE 1 P9 A04203J90BP OPERATING GUIDE 1 P10 A00033J90BP INSTRUCTION BOOK 1 ...

Page 48: ... MAGNETRON UPPER L4 A030F 3J00 LEAD WIRE HARNESS B 1 FOR H V INVERTER L5 A0352 3E10 LEAD WIRE 1 FOR ANTENNA MOTOR LOWER L6 A6590 3E20 FLAT CABLE 1 FOR PC BOARD B U AND D P CIRCUIT U L7 A8311 3B10 SPACER B 2 L8 ANE9071 3M0 LEAD WIRE HOLDER B 1 L9 ANE9071 730 LEAD WIRE HOLDER B 5 L10 ANE9071 740 LEAD WIRE HOLDER B 1 L11 ANE9072 400 LEAD WIRE HOLDER C 2 L12 ANE90828U0AP CLIP BLACK 1 L13 ANE91658V0AP ...

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