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.
Inverter defrost
6
2.4.
Sensor cooking
6
2.5.
Sensor reheat
7
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 20A fuse is blown due to the malfunction of the
monitor 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
12
4.7.
Steam sensor
12
4.8.
Inverter power supply
13
5 COMPONENT TEST PROCEDURE
14
5.1.
Primary, Secondary Interlock Switch & Power Relay RY1
14
5.2.
Monitor Switch
14
5.3.
Magnetron
14
5.4.
key board membrane (Membrane switch assembly)
14
5.5.
Inverter power supply (U)
15
5.6.
Temperature thermistor
15
6 MEASUREMENTS AND ADJUSTMENTS
16
6.1.
Adjustment of primary interlock switch, secondary interlock
switch and monitor switch.
16
6.2.
Measurement of microwave output
16
7 PROCEDURE FOR MEASURING MICROWAVE ENERGY
LEAKAGE
17
7.1.
Equipment
17
7.2.
Procedure for measuring radiation leakage
17
7.3.
Record keeping and notification after measurement
17
8 TROUBLESHOOTING GUIDE
18
8.1.
(Troubleshooting) Oven stops operation during cooking 19
8.2.
(Troubleshooting) Other problems
20
8.3.
Troubleshooting of inverter circuit (U) and magnetron 21
8.4.
Trouble related to Digital Programmer Circuit
22
8.5.
SIMPLE WAY OF H.V. INVERTER/MAGNETRON
TROUBLESHOOTING
25
8.6.
H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y8X00AP)
25
8.7.
How to check the semiconductors using an OHM meter
26
9 EXPLODED VIEW AND PARTS LIST
27
9.1.
EXPLODED VIEW
27
9.2.
PARTS LIST
28
9.3.
ESCUTCHEON BASE ASSEMBLY
29
9.4.
DOOR ASSEMBLY
32
9.5.
WIRING MATERIALS
33
9.6.
PACKING AND ACCESSORIES
34
10 DIGITAL PROGRAMMER CIRCUIT
35
10.1. SCHEMATIC DIAGRAM (NN-SE992S)
35
10.2. SCHEMATIC DIAGRAM (NN-SD982S)
37
10.3. SCHEMATIC DIAGRAM (NN-ST962S)
39
10.4. PARTS LIST
41
CONTENTS
Page
Page
4
NN-SE992S / NN-SD982S / NN-ST962S
Summary of Contents for NN-SD982S
Page 2: ...2 NN SE992S NN SD982S NN ST962S ...
Page 3: ...3 NN SE992S NN SD982S NN ST962S ...
Page 5: ...1 SCHEMATIC DIAGRAM 5 NN SE992S NN SD982S NN ST962S ...
Page 22: ...8 7 How to check the semiconductors using an OHM meter 26 NN SE992S NN SD982S NN ST962S ...
Page 23: ...9 EXPLODED VIEW AND PARTS LIST 9 1 EXPLODED VIEW 27 NN SE992S NN SD982S NN ST962S ...
Page 32: ...36 NN SE992S NN SD982S NN ST962S ...
Page 33: ...10 2 SCHEMATIC DIAGRAM NN SD982S 37 NN SE992S NN SD982S NN ST962S ...
Page 34: ...38 NN SE992S NN SD982S NN ST962S ...
Page 35: ...10 3 SCHEMATIC DIAGRAM NN ST962S 39 NN SE992S NN SD982S NN ST962S ...
