3
TABLE OF CONTENTS
1.
CONTROL PANELS .................................................................................................................................................................. 4
2.
OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE ........................................................................ 5
3.
SCHEMATIC DIAGRAM............................................................................................................................................................ 7
4.
DESCRIPTION OF OPERATING SEQUENCE ......................................................................................................................... 8
4.1
Variable power cooking control ......................................................................................................................................... 8
4.2
Autoweight defrost, autoweight cook................................................................................................................................. 8
4.3
Auto Sensor cook ............................................................................................................................................................. 9
5.
CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING............................................................................................ 10
5.1
Check the grounding ....................................................................................................................................................... 10
5.2
Inverter Warnings ........................................................................................................................................................... 10
5.3
When parts must be replaced, remove the power plug from the outlet........................................................................... 11
5.4
When the 10A fuse is blown due to the operation of short switch:.................................................................................. 11
5.5
Avoid inserting nails, wire, etc. through any holes in the unit during operation............................................ ................... 11
5.6
Confirm after repair ......................................................................................................................................................... 11
5.7
Sharp edges .................................................................................................................................................................... 11
6.
DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE ............................................................................................. 12
6.1
Magnetron ....................................................................................................................................................................... 12
6.2
Inverter Power Supply(U) ............................................................................................................................................... 12
6.3
Digital Programmer Circuit (DPC) and membrane key board. ........................................................................................ 13
6.4
Low voltage transformer and/or power relays (RY1)....................................................................................................... 13
6.5
Fan Motor ........................................................................................................................................................................ 13
6.6
Door disassembly............................................................................................................................................................ 14
6.7
Turntable motor ............................................................................................................................................................... 14
6.8
Steam Sensor NN-T589WB ............................................................................................................................................ 14
7.
COMPONENT TEST PROCEDURE........................................................................................................................................ 15
7.1
Primary Latch Switch, Secondary (Secondary Latch Switch and Power Relay B) Interlocks. ........................................ 15
7.2
Short Switch & Monitor Circuit ........................................................................................................................................ 15
7.3
Magnetron ....................................................................................................................................................................... 15
7.4
Push button key board .................................................................................................................................................... 15
7.5
Inverter Power Supply (U) ............................................................................................................................................... 16
7.6
Inverter Power supply (U) ............................................................................................................................................... 16
7.7
Steam Sensor and digital programmer circuit ................................................................................................................. 16
8.
MEASUREMENTS AND ADJUSTMENTS .............................................................................................................................. 17
8.1
Installation of Primary latch switch, Secondary latch switch and Short switch............................................... ................. 17
8.2
Measurement of microwave output ................................................................................................................................. 17
9.
TROUBLESHOOTING GUIDE ............................................................................................................................................... 18
10. EXPLODED VIEW AND PARTS LIST..................................................................................................................................... 22
11. PARTS LISTS .......................................................................................................................................................................... 23
12. DOOR ASSEMBLY.................................................................................................................................................................. 24
13. ESCUTCHEON BASE ASSEMBLY ........................................................................................................................................ 25
14. PACKING AND ACCESSORIES............................................................................................................................................. 26
15. TRIM KIT PARTS LIST............................................................................................................................................................ 27
16. DIGITAL PROGRAMMER CIRCUIT........................................................................................................................................ 28
17. DIGITAL PROGRAMMER CIRCUIT - PARTS LIST ............................................................................................................... 30
FEATURE CHART
FEATURES
NN-T559
NN-T589
Microwave
6
6
Weight Defrost
3
3
Stage Cooking
3 stage
3 stage
Delay Stand
Yes
Yes
Clock
12 Hrs
12 Hrs
Word Prompt
English
English
Weight Reheat
2
-
Weight Cook
4
-
Sensor Reheat
-
2
Sensor Cook
-
14
Summary of Contents for NN-T559WB
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