5-8
CAUTIONS
1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE
OUTER CASE FROM THE UNIT. PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH
VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE
HIGH VOLTAGE TRANSFORMER. (SEE PAGE 2-1)
2. ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD (1 LITER
OF WATER IN CONTAINER) IN THE OVEN.
COMPONENTS
TEST PROCEDURE
RESULTS
HIGH VOLTAGE
TRANSFORMER
(Wire leads removed)
MAGNETRON
(Wire leads removed)
1. Measure the resistance.
(Ohm-meter scale: Rx1)
• Primary winding
• Secondary winding
• Filament winding
2. Measure the resistance.
(Ohm-meter scale: Rx1000)
• Primary winding to ground
• Filament winding to ground
1. Measure the resistance.
(Ohm-meter scale: Rx1)
• Filament terminal
2. Measure the resistance.
(Ohm-meter scale: Rx1000)
• Filament to chassis
Approx.: 1.4 ohm
Approx.: 90 ohm
Less than: 1 ohm
Normal: Infinite
Normal: Infinite
Normal: Less than 1 ohm
Normal: Infinite
COMPONENT TEST PROCEDURE
PRIMARY
TERMINAL
SECONDARY
WINDING
FILAMENT
WINDING
TERMINAL
Summary of Contents for NN-CT641M
Page 9: ...4 3 SCHEMATIC DIAGRAM 15A Ry 1 Ry 2 Ry 3 Ry 4 Ry 5 RY3 RY4 RY5 RY1 RY2 ...
Page 31: ...6 2 DOOR PARTS 1 2 3 5 6 7 8 9 4 ...
Page 32: ...6 3 CONTROL PANEL PARTS 10 11 12 13 ...
Page 33: ...INTERIOR PARTS 6 4 18 19 20 21 22 23 24 25 26 31 32 33 28 30 71 72 65 64 29 27 ...
Page 34: ...6 5 36 LATCH BOARD PARTS 41 34 35 42 37 37 38 39 ...
Page 35: ...6 6 OVEN CAVITY PARTS 44 45 46 47 48 49 50 51 52 R00 43 ...
Page 36: ...6 7 BASE PLATE PARTS 53 54 55 56 57 59 60 61 ...
