Table Of Contents - Panasonic NN-CF770M CPH Service Manual

NN-CF770M
CONTENTS
1 FEATURE CHART
2 CONTROL PANEL
3 SCHEMATIC DIAGRAM
3.1. CPH
3.2. RPH
4 DESCRIPTION OF OPERATING SEQUENCE
4.1. Variable power cooking control
4.2. Inverter power supply circuit
4.3. Auto Menu cooking
4.4. Grill cooking control
4.5. Combination Cooking
4.6. Convection cooking control
5 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 10
5.1. Check the grounding
5.2. Inverter warnings
5.3. Part replacement.
5.4. When the 20A fuse is blown due to the malfunction of the
monitor interlock switch:
5.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation.
5.6. Verification after repair
5.7. Sharp edges
6 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 12
6.1. Inverter power supply
6.2. Magnetron
6.3. Digital programmer circuit (D.P.C) & Membrane Sheet
6.4. Low voltage transformer and/or power relays (RY1, RY2,
RY4, RY5, RY6, RY7)
6.5. Fan motor
6.6. Quartz heater
6.7. Door assembly
6.8. Stirrer motor
6.9. Convection fan motor and convection heater
7 COMPONENT TEST PROCEDURE
7.1. Primary, Secondary Latch Switch interlocks & Power
Relay RY1
Page
5 7.2. Monitor Interlock Switch
5 7.3. Magnetron
6 7.4. Inverter power supply (U)
6 7.5. Temperature thermistor
7 8 MEASUREMENTS AND ADJUSTMENTS
8 8.1. Adjustment of primary latch switch, secondary latch switch
8 and monitor interlock switch.
8 8.2. Measurement of microwave output
8 9 PROCEDURE FOR MEASURING MICROWAVE ENERGY
8 LEAKAGE
8 9.1. Equipment
9 9.2. Procedure for measuring radiation leakage
9.3. Record keeping and notification after measurement
10 9.4. At least once a year, have the radiation monitor checked
10 for calibration by its manufacturer.
11 10 TROUBLESHOOTING GUIDE
10.1. (Troubleshooting) Oven stops operation during cooking 26
11 10.2. (Troubleshooting) Other problems
10.3. Troubleshooting of inverter circuit (U) and magnetron
11 10.4. Trouble related to Digital Programmer Circuit
11 10.5. SIMPLE WAY OF H.V. INVERTER/MAGNETRON
11 TROUBLESHOOTING
10.6. H.V.INVERTER BOARD MAIN PARTS LIST
12 (F606Y8X00AP)
13 10.7. How to check the semiconductors using an OHM meter 31
13 11 EXPLODED VIEW AND PARTS LIST
11.1. EXPLODED VIEW
11.2. PARTS LIST
15
15 11.3. ESCUTCHEON BASE ASSEMBLY
16 11.4. DOOR ASSEMBLY
16 11.5. WIRING MATERIALS
17 11.6. PACKING AND ACCESSORIES
17 12 DIGITAL PROGRAMMER CIRCUIT
20 12.1. SCHEMATIC DIAGRAM
12.2. PARTS LIST
20
4
Page
20
20
21
21
22
22
22
23
23
23
23
24
25
27
28
29
30
30
32
32
33
35
36
37
38
39
39
41