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.: 1.9 ohm
Approx.: 90 ohm
Less than: 1 ohm
Normal: Infinite
Normal: Infinite
Normal: Less than 1 ohm
Normal: Infinite
FILAMENT
WINDING
TERMINAL
PRIMARY
TERMINAL
SECONDARY
TERMINAL
COMPONENT TEST PROCEDURE
Содержание MS-304W
Страница 9: ...SCHEMATIC DIAGRAM 4 3 ...
Страница 28: ...6 2 13536A 13581A 14970A 14026A 13552A 13213A 14890A 13720D 15006A DOOR PARTS ...
Страница 29: ...6 3 WTP015 WTP004 23506A 23572A 24781M 268711 CONTROL PANEL PARTS ...
Страница 30: ...6 4 33052A 34960A 33390G 35889A 34370T 36549S WTP013 WTT010 WTT021 33112U OVEN CAVITY PARTS ...
Страница 31: ...6 5 466001 43500A 44510A 466001 43501A WSZ085 466003 LATCH BOARD PARTS ...
Страница 33: ...6 7 WTT021 63302A 63303A 56170D WSZ002 WTT030 647781 948503 BASE PLATE PARTS ...
Страница 42: ...8 1 SCHEMATIC DIAGRAM OF P C B ...
Страница 43: ...8 2 PRINTED CIRCUIT BOARD ...
Страница 47: ...P NO 3828W5S2207 May 2002 Printed in Korea ...