Panasonic NE-1257CR, NE-1258R, NE-1257R, NE-1757R, NE-1757CR User Manual

ORDER NO. MOD0009238C1

Commercial Microwave Oven

NE-1257R/NE-1257CR NE-1757R/NE-1757CR NE-2157R/NE-2157CR NE-1258R

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NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258R

CONTENTS

Page Page

1 OUTLINE DIAGRAM 4 2 OPERATION PROCEDURE 3 WIRING REQUIREMENTS AND POWER SOURCE VOLTAGE

SELECTION 4 SCHEMATIC DIAGRAM (NE-1257R, NE-1258R) 5 SCHEMATIC DIAGRAM (NE-1257CR) 6 SCHEMATIC DIAGRAM (NE-1757R)

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7 SCHEMATIC DIAGRAM (NE-1757CR) 8 SCHEMATIC DIAGRAM (NE-2157R)

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9 SCHEMATIC DIAGRAM (NE-2157CR) 10 WIRING DIAGRAM (NE-1 257R, NE-1258R) 11 WIRING DIAGRAM (NE-1 257CR) 12 WIRING DIAGRAM (NE-1 757R) 13 WIRING DIAGRAM (NE-1 757CR)

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14 15 16 17 18 19 20

14 WIRING DIAGRAM (NE-2 15 7R) 21 15 WIRING DIAGRAM (NE-2 15 7CR ) 16 DESCRIPT ION OF OPERATING SEQUENCE 17 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 18 DISASSEMBLY AND PARTS REPLACEMENT PROCEDU RE 19 COMPONE NT TEST PROCEDU RE 20 MEASURE MENTS AND ADJUSTMENTS

22 23 24 26 30 32

21 PROCEDU RE FOR MEASURING MICROWAVE ENERGY

LEAKAGE 22 TROUBLE SHOOTING GUIDE 23 EXPLODED VIEW AND PARTS LIST

33 35 36

NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258

24 PARTS LIST 25 DOOR ASSEMBLY 26 ESCUTCH EON BASE ASSEMBLY 27 PACKING AND ACCESSO RIES 28 WIRING MATERIAL 29 REF. NO. 89 L. V. TRANSFO RMER (U) 30 REF. NO. 58 NOISE FILTER (U) 31 REF. NO. E2 P. C. BOARD (U) 32 DIGITAL PROGRAMMER CIRCUIT 33 DIGITAL PROGRAMMER CIRCUIT

37 40 41 42 43 44 44 45 46 48

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NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258R

1 OUTLINE DIAGRAM

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2 OPERATION PROCEDURE

NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258

5

NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258R

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NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258

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NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258R

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NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258

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NE-1257R/NE-1257CR / NE-1757R/NE-1757CR / NE-2157R/NE-2157CR / NE-1258R

3 WIRING REQUIREMENTS AND POWER SOURCE

VOLTAGE SELECTION

Wiring Requirements

No other appliance should share the circuit with the microwave oven. If it does, the branch circuit fuse may overload and either cause the oven to heat slower than expected or blow the fuse.

1. For Mode NE-1257 The oven must be on a SEPARATE, 20 Amp, 60 Hz-120V

GROUNDED CIRCUIT.

2. For Model NE-1757 a. This oven must be on a separate, 60 Hz GROUNDED

CIRCUIT-minimum 15 amps.

b. The microwave ovens are built to operate on 2 different

voltages (230 V or 208 V). Be sure that the voltage selector connector (on the back of the oven) is set for your power supply. Connecting oven to 230 volt line with 208 voltage setting is dangerous and may result in overheating of the electrical components thus shortening their life expectancy or possibly causing a fire or other accident. Connecting oven to 230 volt line with 208 voltage will lower the power output of the oven, resulting in slower heating of the food. Panasonic is NOT responsible for damage resulting from the use of the oven with other than specified voltage.

the oven with other than specified voltage.

Power Source Voltage Selection

The microwave oven Models NE-1757 & NE-2157 are factory set for 208 V operation. For 230 V operation, the following selection MUST be made.

(Step 1) Unscrew the voltage selection panel cover which is located on the back of the oven. Do not remove any other parts from the oven.

(Step 2) Remove the while connector and plug the black connector into the socket.

(Step 3) Store the unused white connector in the rectangular opening.

(Step 4) Reattach the voltage adjustment panel cover to the cabinet.

For 230 V - Use black connector plug. For 208 V - Use white connector plug. To go from 230 V to 208 V circuit follow steps 1-4 above,

except at step 2, plug the white connector plug into the socket and store the black plug in the rectangular opening.

3. For Model NE-2157 a. This oven must be on a separate, 60 Hz GROUNDED

CIRCUIT-minimum 20 amps.

b. The microwave ovens are built to operate on 2 different

voltages (230 V or 208 V). Be sure that the voltage selector connector (on the back of the oven) is set for your power supply. Connecting oven to 230 volt line with 208 voltage setting is dangerous and may result in overheating of the electrical components thus shortening their life expectancy or possibly causing a fire or other accident. Connecting oven to 230 volt line with 208 voltage will lower the power output of the oven, resulting in slower heating of the food. Panasonic is NOT responsible for damage resulting from the use of

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