1 SCHEMATIC DIAGRAM
5
2 DESCRIPTION OF OPERATING SEQUENCE
6
2.1.
Variable power cooking control
6
2.2.
Inverter power supply circuit
6
2.3.
Turbo defrost, Auto cook
6
2.4.
Grill cooking control
6
2.5.
Sensor cooking
6
2.6.
Steam sensor and digital programmer circuit
7
3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING 8
3.1.
Check the grounding
8
3.2.
Inverter warnings
8
3.3.
Part replacement.
9
3.4.
When the 10A fuse is blown due to the malfunction of the
short switch:
9
3.5.
Avoid inserting nails, wire etc. through any holes in the
unit during operation.
9
3.6.
Verification after repair
9
3.7.
Sharp edges
9
4 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 10
4.1.
Magnetron
10
4.2.
Digital programmer circuit (D.P.C)
10
4.3.
Low voltage transformer and/or power relays (RY1, RY2)
11
4.4.
Fan motor
11
4.5.
Door assembly
11
4.6.
Turntable motor
13
4.7.
Quartz heater
13
4.8.
Steam sensor
14
4.9.
Inverter power supply
15
5 COMPONENT TEST PROCEDURE
16
5.1.
Primary, Secondary Latch Switch interlocks & Power
Relay RY1
16
5.2.
Short Switch
16
5.3.
Magnetron
16
5.4.
key board membrane (Membrane switch assembly)
16
5.5.
Inverter power supply (U)
17
5.6.
Temperature thermistor
17
6 MEASUREMENTS AND ADJUSTMENTS
18
6.1.
Adjustment of primary latch switch, secondary latch switch
and short switch.
18
6.2.
Measurement of microwave output
18
7 TROUBLESHOOTING GUIDE
19
7.1.
(Troubleshooting) Oven stops operation during cooking 19
7.2.
(Troubleshooting) Other problems
20
7.3.
Troubleshooting of inverter circuit (U) and magnetron 21
7.4.
Simple way of H.V. Inverter/magnetron troubleshooting 22
7.5.
How to check the semiconductors using an OHM meter
22
7.6.
H.V. INVERTER MAIN PARTS LIST (Z606YBA00QP) 23
8 EXPLODED VIEW AND PARTS LIST
24
8.1.
EXPLODED VIEW
24
8.2.
PARTS LIST
25
8.3.
ESCUTCHEON BASE ASSEMBLY
26
8.4.
DOOR ASSEMBLY
28
8.5.
WIRING MATERIALS
29
8.6.
PACKING AND ACCESSORIES
30
9 DIGITAL PROGRAMMER CIRCUIT
31
9.1.
SCHEMATIC DIAGRAM (NN-GD462M, GD452W)
31
9.2.
SCHEMATIC DIAGRAM (NN-GT462M)
33
CONTENTS
Page
Page
4
NN-GD462M / NN-GD452W / NN-GT462M
Summary of Contents for NN-GD452W
Page 2: ...2 NN GD462M NN GD452W NN GT462M ...
Page 3: ...3 NN GD462M NN GD452W NN GT462M ...
Page 5: ...1 SCHEMATIC DIAGRAM 5 NN GD462M NN GD452W NN GT462M ...
Page 24: ...8 EXPLODED VIEW AND PARTS LIST 8 1 EXPLODED VIEW 24 NN GD462M NN GD452W NN GT462M ...
Page 32: ...32 NN GD462M NN GD452W NN GT462M ...
Page 33: ...9 2 SCHEMATIC DIAGRAM NN GT462M 33 NN GD462M NN GD452W NN GT462M ...
Page 34: ...34 NN GD462M NN GD452W NN GT462M 02 12 S 9X7 S 9X8 Printed in China ...
