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 and Rx100)
• 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.: 0.2 ~ 0.4 ohm
Approx.: 60 ~ 90 ohm
Less than: 1 ohm
Normal: Infinite
Normal: Infinite
Normal: Less than 1 ohm
Normal: Infinite
FILAMENT
WINDING
PRIMARY
TERMINAL
COMPONENT TEST PROCEDURE
Содержание MB-319ML
Страница 9: ...SCHEMATIC DIAGRAM 4 3 ...
Страница 28: ...6 2 13213A 13552A 13536A 14026A 14970A 13581A 15006A 14890A 13720D DOOR PARTS ...
Страница 31: ...6 5 43501A WSZ085 466001 466003 466001 43500A LATCH BOARD PARTS ...
Страница 33: ...6 7 63302L 63303L 56170D 63302R 948503 WSZ002 WTT021 63303R WTT028 647781 368771 BASE PLATE PARTS ...
Страница 36: ...8 1 SCHEMATIC DIAGRAM OF P C B ...
Страница 37: ...8 2 PRINTED CIRCUIT BOARD ...
Страница 40: ...P NO 3828W5S1726 Aug 2002 Printed in Korea ...