Table of Contents
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s
Power Requirement
Power Output
Microwave Frequency
Magnetron
Timer
Outside Dimensions
Cavity Dimensions
Net Weight
Shipping weight
Specifications subject to change without notice.
2
7L
White/Silver
India
230 Volts AC 50 Hz
(7.0 A)
Microwave 1450W
Grill
(
6 0
.
A)
14
00
W
(10.4 A)
Convection 2400W
Single phase, 3 wire grounded
900 Watts full microwave power (IEC60705)
2,450 MHz
2M319M
0 ~ 90 min.
513
W) x
306
(H) x 4
71
D) mm
(
(
(W) x
(H) x 348(D) mm
330
239
17.2 kg (approx.)
1
9. kg (approx.)
7
© Panasonic Corporation 2011 Unauthorized
copying and distribution is a violation of law
Order No. MOD111034 8
Microwave Oven
Model No.
NN-CT641M
NN-CT651M
CE
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Table of Contents
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Summarization of Contents
SAFETY PRECAUTIONS
MICROWAVE ENERGY EXPOSURE PRECAUTIONS
Essential safety measures to prevent hazardous exposure to microwave energy during servicing.
POWER LEVEL & ACCESSORIES
ACCESSORIES LIST
Details on included accessories such as glass tray, roller ring, and wire rack.
INSTALLATIONS
INSTALLING THE OVEN
Instructions for proper placement and setup of the microwave oven.
EARTHING INSTRUCTIONS
Critical guidelines for ensuring the microwave oven is properly earthed for safety.
OPERATING INSTRUCTIONS
PRODUCT FEATURES OVERVIEW
Description of the main physical components and features of the microwave oven.
CONTROL PANEL FUNCTIONS
Detailed explanation of the buttons and display on the control panel.
OPERATING SEQUENCE GUIDE
Step-by-step description of how to use various cooking functions.
SCHEMATIC DIAGRAM
HIGH VOLTAGE CAPACITOR SAFETY NOTE
Important warning regarding the discharge of high voltage capacitors before servicing.
CIRCUIT DESCRIPTION
GENERAL CIRCUIT DETAILS
Basic explanation of the low voltage transformer and initial power supply.
FUNCTIONAL OPERATION DESCRIPTIONS
Explanation of how the oven operates when various functions are activated.
SERVICE INFORMATION
TOOLS AND MEASURING INSTRUMENTS
List of necessary tools and instruments for servicing the microwave oven.
MICROWAVE LEAKAGE TESTING
Procedures and precautions for testing microwave radiation leakage.
MEASUREMENT OF MICROWAVE POWER OUTPUT
WATER LOAD TESTING PROCEDURE
Method for measuring the microwave oven's power output using a water load.
DISASSEMBLY AND ADJUSTMENT
OUTER CASE REMOVAL
Steps for safely removing the outer casing of the microwave oven.
MAGNETRON REMOVAL AND REPLACEMENT
Procedure for removing and replacing the magnetron component.
INTERLOCK SYSTEM SERVICE
Information on servicing the door interlock mechanism and switches.
INTERLOCK CONTINUITY TEST
PRIMARY INTERLOCK SWITCH TEST
Procedure to test the primary interlock switch continuity.
SECONDARY INTERLOCK SWITCH TEST
Procedure to test the secondary interlock switch continuity.
MONITOR SWITCH TEST
Procedure to test the monitor switch continuity.
COMPONENT TEST PROCEDURE
HIGH VOLTAGE TRANSFORMER AND MAGNETRON TESTS
Testing procedures for the high voltage transformer and magnetron.
HIGH VOLTAGE CAPACITOR AND DIODE TESTS
Testing procedures for the high voltage capacitor and diode.
FUSE, HEATER ELEMENT, AND THERMOSTAT TESTS
Testing procedures for fuses, heater elements, and thermostats.
PCB AND MOTOR COMPONENT TESTS
Testing procedures for PCB components, fan motor, and turntable motor.
TROUBLE SHOOTING
TROUBLE 1: CONTROL CIRCUIT FAULTS
Troubleshooting guide for issues related to the control circuit and display.
TROUBLE 2: OVEN NON-OPERATION
Troubleshooting steps when the oven does not operate or accept input.
TROUBLE 3: OVEN DELAYED START
Troubleshooting steps when the oven does not start cooking after setting time.
TROUBLE 4: LOW OUTPUT POWER
Troubleshooting steps when the oven operates but output power is low.
TROUBLE 5: NO OSCILLATION
Troubleshooting steps when the oven operates but produces no microwave oscillation.
TROUBLE 6: IMPROPER POWER SETTING
Troubleshooting steps when the oven does not cook properly at lower power levels.
TROUBLE 7: GRILL HEATER FAULTS
Troubleshooting steps for issues with the grill heater not operating.
TROUBLE 8: CONVECTION HEATER FAULTS
Troubleshooting steps for issues with the convection heater not operating.
EXPLODED VIEW DIAGRAMS
DOOR ASSEMBLY PARTS
Exploded view illustration of the microwave oven's door components.
CONTROL PANEL ASSEMBLY PARTS
Exploded view illustration of the microwave oven's control panel components.
INTERIOR ASSEMBLY PARTS
Exploded view illustration of the microwave oven's internal components.
LATCH BOARD ASSEMBLY PARTS
Exploded view illustration of the microwave oven's latch board components.
OVEN CAVITY ASSEMBLY PARTS
Exploded view illustration of the microwave oven's main cavity components.
BASE PLATE ASSEMBLY PARTS
Exploded view illustration of the microwave oven's base plate components.
REPLACEMENT PARTS LISTS
PARTS LIST FOR MODEL NN-CT641M
Comprehensive list of replacement parts for the NN-CT641M model.
PARTS LIST FOR MODEL NN-CT651M
Comprehensive list of replacement parts for the NN-CT651M model.
SCHEMATIC DIAGRAM OF P.C.B
PRINTED CIRCUIT BOARD LAYOUT
Detailed schematic diagram of the microwave oven's printed circuit board.
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