1 FEATURE CHART
5
2 CONTROL PANEL
5
3 SCHEMATIC DIAGRAM
6
3.1.
NN-GT370M KTE/PTE
6
3.2.
NN-GT370M 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) & Membrane switch 11
6.3.
Low voltage transformer and/or power relays (RY1)
12
6.4.
Fan motor
13
6.5.
Door assembly
13
6.6.
Turntable motor
15
6.7.
Quartz heater
15
6.8.
H.V. Inverter Power Supply
16
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.
Inverter power supply (U)
18
7.5.
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 (F606YM300BP)
25
10 EXPLODED VIEW AND PARTS LIST
26
10.1. EXPLODED VIEW
26
10.2. PARTS LIST
27
10.3. DOOR ASSEMBLY
29
10.4. ESCUTCHEON BASE ASSEMBLY
30
10.5. WIRING MATERIALS
31
10.6. PACKING AND ACCESSORIES
32
11 DIGITAL PROGRAMMER CIRCUIT
33
11.1. SCHEMATIC DIAGRAM
33
11.2. PARTS LIST
35
CONTENTS
Page
Page
4
NN-GT370M
Summary of Contents for NN-GT370M
Page 2: ...2 NN GT370M ...
Page 3: ...3 NN GT370M ...
Page 5: ...1 FEATURE CHART 2 CONTROL PANEL 5 NN GT370M ...
Page 6: ...3 SCHEMATIC DIAGRAM 3 1 NN GT370M KTE PTE 6 NN GT370M ...
Page 7: ...3 2 NN GT370M ZPE 7 NN GT370M ...
Page 26: ...10 EXPLODED VIEW AND PARTS LIST 10 1 EXPLODED VIEW 26 NN GT370M ...
Page 33: ...11 DIGITAL PROGRAMMER CIRCUIT 11 1 SCHEMATIC DIAGRAM 33 NN GT370M ...
Page 34: ...34 NN GT370M ...
