Read Panasonic NN-GD391SZPE / NN-GD371MZPE Service Manual online
1 FEATURE CHART
5
2 CONTROL PANEL
5
3 SCHEMATIC DIAGRAM
6
3.1.
NN-GD371M KTE/PTE
6
3.2.
NN-GD391S ZPE, GD371M ZPE
7
4 DESCRIPTION OF OPERATING SEQUENCE
8
4.1.
Variable power cooking control
8
4.2.
Inverter power supply circuit
8
4.3.
Turbo defrost, Auto cook
8
4.4.
Grill cooking control
8
4.5.
Combination Cooking
8
5 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 9
5.1.
Check the grounding
9
5.2.
Inverter warnings
9
5.3.
Part replacement.
10
5.4.
When the 10A fuse is blown due to the malfunction of the
short switch:
10
5.5.
Avoid inserting nails, wire etc. through any holes in the
unit during operation.
10
5.6.
Verification after repair
10
5.7.
Sharp edges
10
6 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 11
6.1.
Magnetron
11
6.2.
Digital programmer circuit (D.P.C)
11
6.3.
Low voltage transformer and/or power relays (RY1)
12
6.4.
DC fan motor
12
6.5.
Door assembly
13
6.6.
Turntable motor
14
6.7.
Quartz heater
15
6.8.
H.V. Inverter Power Supply
15
7 COMPONENT TEST PROCEDURE
17
7.1.
Primary, Secondary Latch Switch interlocks & Power
Relay RY1
17
7.2.
Short switch & monitor
17
7.3.
Magnetron
17
7.4.
DC fan motor
17
7.5.
Inverter power supply (U)
18
7.6.
Temperature thermistor
18
8 MEASUREMENTS AND ADJUSTMENTS
19
8.1.
Adjustment of Primary latch switch, Secondary latch
switch and Short switch.
19
8.2.
Measurement of microwave output
19
9 TROUBLESHOOTING GUIDE
20
9.1.
(Troubleshooting) Oven stops operation during cooking 20
9.2.
Troubleshooting of inverter circuit (U) and magnetron 22
9.3.
Trouble related to Digital Programmer Circuit
23
9.4.
Simple way of H.V. Inverter/magnetron troubleshooting 24
9.5.
How to check the semiconductors using an OHM meter
24
9.6.
H.V. INVERTER MAIN PARTS LIST (F606YBA00GP) 25
10 EXPLODED VIEW AND PARTS LIST
26
10.1. EXPLODED VIEW
26
10.2. PARTS LIST
27
10.3. ESCUTCHEON BASE ASSEMBLY
29
10.4. DOOR ASSEMBLY
31
10.5. WIRING MATERIALS
32
10.6. PACKING AND ACCESSORIES
33
11 DIGITAL PROGRAMMER CIRCUIT
34
11.1. SCHEMATIC DIAGRAM
34
11.2. PARTS LIST
36
CONTENTS
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Page
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NN-GD391S / NN-GD371M
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