Panasonic NE 17521 17523 17723 1772 1752 Service Manual Repair Guide

© Panasonic Corporation 2012 Unauthorized copy- ing and distribution is a violation of law. Order Number MOD1206355CE Commercial Microwave Oven Model No. NE-1252 Model No. NE-1752 Model No. NE-1772 Model No. NE-2152 Model No. NE-12521 Model No. NE-12523 Model No. NE-17521 Model No. NE-17523 Model No. NE-17723 Model No. NE-21521 Model No. NE-21523 TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions ----------------------------------------------- 2 2 Specifications ----------------------------------------------------- 3 3 Technical Descriptions ----------------------------------------- 4 4 Location of Controls and Components ------------------- 5 5 Installation Instructions ---------------------------------------- 6 6 Operating Instructions------------------------------------------ 7 7 Test Mode ----------------------------------------------------------12 8 Troubleshooting Guide --------------------------------------- 14 9 Disassembly and Assembly Instructions --------------- 17 10 Measurements and Adjustments -------------------------- 22 11 Schematic Diagram -------------------------------------------- 25 12 Exploded View and Replacement Parts List ----------- 29

2 1 Safety Precautions

3 2 Specifications Models: NE-12521 NE-12523 NE-1252 NE-17521 NE-17523 NE-17723 NE-1752 NE-1772 NE-21521 NE-21523 NE-2152 Power Source: 120 V AC Single Phase 60 Hz 208/230 V AC Single Phase 60 Hz Power Requirement: 1990 W, (17.3A) 1970 W, (17.1A) 2650 W, (13.6A) 208 V 2610 W, (13.5A) 208 V 3160 W, (16.3A) 208 V 3120 W, (16.1A) 208 V 2650 W, (12.2A) 230 V 2610 W, (12.2A) 230 V 3160 W, (14.9A) 230 V 3120 W, (14.7A) 230 V *High frequency Output: HIGH (P10) 1200 W 1700 W 2100 W MED (P5, P4) Approx. 55%~45% Approx. 55%~45% Approx. 55%~45% DEFROST (P1) 340 W 340 W 340 W Microwave Frequency: 2,450MHZ Timer: Maximum programmable time for single stage heating P10-P2 power = 15 min. P1 (DEF) = 30 min. Outside Dimensions: 16 5/8 inch (W) X 20 inch (D) X 13 1/4 inch (H) 422 mm (W) X 508 mm (D) X 337 mm (H) Inside Dimensions: 13 inch (W) X 12 7/32 inch (D) X 6 7/8 inch (H) 330 mm (W) X 310 mm (D) X 175 mm (H) Weight: 56 lbs/25.5 kg 60 lbs/27.5 kg 66 lbs/29.5 kg *Output power: IEC705-88 Test procedure Specifications subject to change without notice.

4 3 Technical Descriptions 3.1. Description of operating sequence Variable power cooking control The coil of power relays are energized intermittently by the digital programmer circuit, when the oven is set to MEDIUM or DEFROST power position. The digital programmer circuit controls the ON-OFF time of each power relay contacts in order to vary the output power of the microwave oven. One complete ON and OFF cycle of the power relay is 44 seconds. The relation between indications on the control panel and the output power of the microwave oven is as shown in Figure.

5 4 Location of Controls and Components 4.1. Outline diagram

6 5 Installation Instructions 5.1. 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-12521/NE-12523/NE-1252 The oven must be on a SEPARATE, 20 Amp, 60 Hz-120V GROUNDED CIRCUIT. 2. For Model NE-1752/NE-1772/NE-17521/NE-17523/NE- 17723 This oven must be on a separate, 60 Hz GROUNDED CIRCUIT-minimum 15 amps. 3. For Model NE-21521/NE-21523/NE-2152 This oven must be on a separate, 60 Hz GROUNDED CIRCUIT-minimum 20 amps. Power Source Voltage Adjustment For 208V/230V models The microwave oven automatically detects 208 V and 230 V-240 V. Insert the plug, and if the Digital Display Window goes blank 10 seconds after use, unplug and insert the plug again.

7 6 Operating Instructions 6.1. Operation procedure 1. Manual heating for single stage 2. Manual heating for 2nd or 3rd stage NOTE: For a 3rd stage heating cycle, select a further power level and time between steps 3 and 4 above.

8 3. Memory setting for single stage TO PROGRAM MEMORY AREA B: Follow steps 1 above. Touch the Memory Shift pad twice and a small [B] will appear beneath the flashing [PROG]. Touch the memory pad you wish to program, and the previ- ously selected time and power level will appear in the display window. NOTE: Once the Memory area B has been selected it cannot be changed back to Memory area A. If you do not require Memory area B, cancel it by touching the cancel pad and begin again. 4. Memory setting for 2nd or 3rd stage NOTE: For a 3rd stage heating cycle, select a further power level and dial in a time, between steps 3 and 4 above.

9 5. Memory pad heating NOTE: When program is locked, heating can be started automatically by tapping memory pad. 6. Programming Double or Treble Quantity Pad

10 7. Memory Pad Heating for Double or Treble Quantity Heat- ing 8. To Read the Cycle Counter NOTE: Total cumulative number includes programming memory heating and manual heating number of times has been used. Cooking times over 99,999 times will be back 0. 9. To Activate Program Lock

Panasonic NE 17521 17523 17723 1772 1752 Service Manual Repair Guide

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