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Panasonic NN-G335WF Service Manual

Panasonic NN-G335WF
56 pages
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ORDER NO.PHAMOS0506022A3
Microwave Oven
NN-G315WF / NN-G335WF / NN-G335MF / NN-G335BF /
HPE(Hong Kong)
LPK(Philippines)
YTE(Others)
KTE(UAE)
PTE( Iran)
ZPE(CIS Countries)
Please file and use this manual together with the service manual for
Model NN-S215/S235 (Order No.PHAMOS0506021C3).
SPECIFICATIONS
1

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Panasonic NN-G335WF Specifications

General IconGeneral
BrandPanasonic
ModelNN-G335WF
CategoryMicrowave Oven
LanguageEnglish

Summary

SPECIFICATIONS

WARNING

CAUTION

1. SCHEMATIC DIAGRAM

1.1. NN-G315

Schematic diagram for the NN-G315 model.

1.2. NN-G335

Schematic diagram for the NN-G335 model.

2. CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING

2.1. Check the grounding

Procedure to ensure proper grounding of the microwave oven before repair.

2.2. Warning about the electric charge in the high voltage capacitor

Safety warning regarding residual charge in the high voltage capacitor.

2.5. Avoid inserting nails, wire, etc. through any holes in the unit during operation.

Precaution against inserting foreign objects into the oven during operation.

2.6. Confirm after repair

Checks to perform after completing repairs on the microwave oven.

3. MEASUREMENTS AND ADJUSTMENTS

3.1. Adjustment of Primary latch switch, Secondary latch switch and Short switch.

Steps for adjusting door latch and short switches for proper operation.

3.2. Measurement of microwave output

Method to test magnetron output power using a simple water heating test.

4. EXPLODED VIEW AND PARTS LIST

4.1. EXPLODED VIEW

Illustrated diagram showing all parts of the microwave oven assembly.

4.2. PARTS LIST

List of all part numbers and descriptions for ordering replacements.

4.3. DOOR ASSEMBLY

Instructions for disassembling and reassembling the microwave oven door.

4.4. PACKING AND ACCESSORIES

Details on how microwave oven units are packed and what accessories are included.

4.5. ESCUTCHEON BASE ASSEMBLY

Procedures for assembling the escutcheon base component.

4.6. WIRING MATERIALS

Identification and listing of wiring materials used in the appliance.

5. DIGITAL PROGRAMMER CIRCUIT(NN-G335WF/MF/BF)

5.1. SCHEMATIC DIAGRAM

Electrical schematic diagram for the digital programmer circuit.

5.2. PARTS LIST

List of parts specific to the digital programmer circuit.

WARNING

CAUTION

2. CONTROL PANEL

NN-S215

Control panel details for the NN-S215 model.

NN-S235WF/M

Control panel details for the NN-S235WF/M model.

3. OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE

3.1. Time Cooking for Two Stage

Procedure for time cooking in two stages.

3.2. Turbo Defrost

Operation steps for the Turbo Defrost function.

3.3. Auto Cook

Operation steps for the Auto Cook function.

3.4. Auto Reheat

Operation steps for the Auto Reheat function.

3.5. To Set Child Satety Lock

Procedure to activate the child safety lock feature.

3.6. To Reset Child Lock

Procedure to deactivate the child safety lock feature.

4. SCHEMATIC DIAGRAM

4.1. NN-S215 (QPQ, ZPE)

Schematic diagram for NN-S215 models in QPQ and ZPE regions.

4.2. NN-S215 (EXCEPT QPQ & ZPE)

Schematic diagram for NN-S215 models except QPQ and ZPE.

4.3. NN-S235

Schematic diagram for NN-S235 models.

5. DESCRIPTION OF OPERATING SEQUENCE

5.1. Variable power cooking control (NN-S235)

Explanation of how variable power cooking works for NN-S235 models.

5.2. Variable power cooking control (NN-S215)

Explanation of how variable power cooking works for NN-S215 models.

6. CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING

6.1. Check the grounding

Importance of checking grounding before troubleshooting microwave ovens.

6.2. Warning about the electric charge in the high voltage capacitor

Safety advisory on discharging the high voltage capacitor before servicing.

6.3. When parts must be replaced, remove the power plug from the outlet.

Essential step to unplug the oven before replacing any parts.

6.4. When the 8 Amp fuse is blown due to the operation of short switch:

Actions required when the 8 Amp fuse blows due to interlock switch issues.

7. DISASSEMBLY AND PARTS REPLACEMENT

7.1. Magnetron

Procedure for safely removing and replacing the magnetron assembly.

7.2. Digital Programmer Circuit (DPC) and membrane key board.

Steps for removing and replacing the DPC and membrane keyboard.

7.3. Low voltage transformer and/or power relays (RY1, RY2)

Procedures for replacing low voltage transformers and power relays.

7.4. Timer

Steps for removing and replacing the timer component.

7.5. Fan motor

Instructions for removing and replacing the fan motor.

7.6. Door assembly

Detailed steps for disassembling and reassembling the oven door.

7.7. Turntable motor

Procedure for removing and replacing the turntable motor.

8. COMPONENT TEST PROCEDURE

8.1. Primary Latch Switch, (Door Switch and Power Relay B) Interlocks.

Testing procedures for interlock switches and power relay B.

8.2. Short Switch & Monitor

Testing the short switch and monitoring its continuity.

8.3. High voltage transformer

Checking the continuity and resistance of the high voltage transformer.

8.4. High voltage capacitor

Testing the continuity and resistance of the high voltage capacitor.

8.5. Magnetron

Procedures for checking the continuity of the magnetron filament and case.

8.6. Variable power controller

Steps to test the functionality of the variable power controller.

8.7. Diode (U)

Testing procedures for the diode (U) and protector diode.

8.8. Membrane key board (Membrane switch assembly)

Checking continuity of switch terminals on the membrane keyboard.

9. MEASUREMENTS AND ADJUSTMENTS

9.1. Adjustment of Primary latch switch, Secondary latch switch and Short switch.

Steps for adjusting door latch and short switches for proper operation.

9.2. Measurement of microwave output

Method to test magnetron output power using a simple water heating test.

10. TROUBLESHOOTING GUIDE

10.2. How To CHECK THE SEMICONDUCTORS USING AN OHM METER

Guide on using an ohmmeter to test semiconductor components like diodes and transistors.

11. EXPLODED VIEW AND PARTS LIST

11.1. EXPLODED VIEW

Illustrated diagram showing all parts of the microwave oven assembly.

11.2. PARTS LIST

List of all part numbers and descriptions for ordering replacements.

11.3. DOOR ASSEMBLY

Instructions for disassembling and reassembling the microwave oven door.

11.4. WIRING MATERIALS

Identification and listing of wiring materials used in the appliance.

11.5. PACKING AND ACCESSORIES

Details on how microwave oven units are packed and what accessories are included.

11.6. ESCUTCHEON BASE ASSEMBLY

Procedures for assembling the escutcheon base component.

12. DIGITAL PROGRAMMER CIRCUIT (NN-S235WF/MF/BF)

12.1. SCHEMATIC DIAGRAM

Electrical schematic diagram for the digital programmer circuit.

12.2. PARTS LIST

List of parts specific to the digital programmer circuit.

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