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NN-ST452W
Panasonic NN-ST452W Service Manual
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©
Panasonic
Appliances
Microwave
Oven
(Shanghai)
Co.,
Ltd.
2012.
NN-SD452W
NN-ST462M
NN-ST452W
BPQ
(U.K.)
EPG
(Continen
tal
Europe)
Micro
w
av
e
Ov
en
ORDER
NO.PAPMOSH
1201015CE
2
Table of Contents
Table of Contents
4
Schematic Diagram
5
Description of Operating Sequence
6
Variable Power Cooking Control
6
Inverter Power Supply Circuit
6
Turbo Defrost, Auto Cook
6
Sensor Cooking
6
Steam Sensor and Digital Programmer Circuit
7
Cautions to be Observed When Troubleshooting
8
Check the Grounding
8
Inverter Warnings
8
Part Replacement
9
When the 10A Fuse Is Blown Due to the Malfunction of the
9
Short Switch
9
Verification after Repair
9
Sharp Edges
9
Disassembly and Parts Replacement Procedure
10
Magnetron
10
Digital Programmer Circuit (D.P.C)
10
Low Voltage Transformer And/Or Power Relays (RY1, RY2)
11
Fan Motor
11
Door Assembly
11
Turntable Motor
13
Steam Sensor
13
Inverter Power Supply
14
Component Test Procedure
15
Primary, Secondary Latch Switch Interlocks & Power Relay RY1
15
Short Switch
15
Magnetron
15
Key Board Membrane (Membrane Switch Assembly)
15
Inverter Power Supply (U)
16
Temperature Thermistor
16
Measurements and Adjustments
17
Adjustment of Primary Latch Switch, Secondary Latch Switch and Short Switch
17
Measurement of Microwave Output
17
Troubleshooting Guide
18
Troubleshooting) Oven Stops Operation During Cooking
18
Troubleshooting) Other Problems
19
Troubleshooting of Inverter Circuit (U) and Magnetron
20
Simple Way of H.V. Inverter/Magnetron Troubleshooting
21
How to Check the Semiconductors Using an OHM Meter
21
Inverter Main Parts List (Z606Yba00Qp)
22
Exploded View and Parts List
23
Exploded View
23
Parts List
24
Escutcheon Base Assembly
25
Door Assembly
27
Wiring Materials
28
Packing and Accessories
29
Digital Programmer Circuit
30
Schematic Diagram (Nn-Sd452W)
30
Schematic Diagram (Nn-St462M, St452W)
32
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Operating Instructions
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Panasonic NN-ST452W Specifications
General
Type
Microwave Oven
Power Output
900 W
Control Type
Electronic
Turntable
Yes
Color
White
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