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Panasonic Manuals
Microwave Oven
NN-H264SFR
Service manual
Panasonic NN-H264SFR Service Manual page 33
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Service manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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Microwave Oven
1
1. FEATURE CHART
5
2. CONTROL PANEL (APH)
6
3. CONTROL PANEL (CPH)
7
4. OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE
8
4.1. To set clock
8
4.2. Time cooking for two stage
9
4.3. Inverter turbo defrost
10
4.4. Inverter auto cooking
10
4.5. Popcorn
11
4.6. Auto reheat
11
4.7. Power level
12
5. SCHEMATIC DIAGRAM (APH)
12
6. SCHEMATIC DIAGRAM (CPH)
13
7. DESCRIPTION OF OPERATING SEQUENCE
14
7.1. Variable power cooking control
14
Variable Power Cooking
14
7.2. Inverter power supply circuit [NEW H.V.]
15
7.3. Inverter turbo defrost
15
Inverter Turbo Defrost
16
8. CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING
16
8.1. Check the grounding
16
8.2. Inverter warnings [NEW H.V.]
16
8.3. When parts must be replaced, remove the power plug from the outlet
. 18
8.4. When the 18 Amp fuse is blown due to the operation of short switch
: 18
8.5. Avoid inserting nails, wire, etc. through any holes in the unit during operation
. 18
8.6. Confirm after repair
19
9. DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE
20
9.1. Magnetron
20
9.2. Digital programmer circuit (DPC) and membrane key board
. 20
9.3. Low voltage transformer and/or power relays (RY1, RY2)
21
9.4. Inverter power supply (U)
22
9.5. Door assembly
24
9.6. Stirrer motor
25
9.7. Blower motor (U)
25
9.8. Fan motor A (for H.V. inverter (U) cooling)
25
9.9. Fan motor B (for magnetron cooling)
26
9.10. Turntable motor
26
10. COMPONENT TEST PROCEDURE
27
10.1. Primary latch switch, secondary (secondary latch switch and power relay B) interlocks
. 27
10.2. Short switch & monitor
27
10.3. Magnetron
28
10.4. Membrane key board (Membrane switch assembly)
28
10.5. Inverter power supply (U)
28
11. MEASUREMENTS AND ADJUSTMENTS
30
11.1. Adjustment of primary latch switch, secondary latch switch and short switch
. 30
11.2. Measurement of microwave output
31
TABLE (1L-1min.test) 31
12. PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE
32
12.1. Equipment
32
12.2. Procedure for measuring radiation leakage
32
I
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Table of Contents
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Order No.simmc 0203005C1 E2 Microwave Oven
33
Table of Contents
Troubleshooting
Inverter Turbo Defrost
49
TROUBLESHOOTING GUIDE
67
Troubleshooting of inverter circuit (U) and magnetron [NEW H.V.]
71
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This manual is also suitable for:
Nn-h275
Nn-s255
Nn-s245
Nn-h264bfr
Nn-h264wfr
Nn-s254sfr
...
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Nn-s254bfr
Nn-s254wfr
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