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
Summary of Contents for MC-8083MLR
Page 9: ...SCHEMATIC DIAGRAM 4 3 ...
Page 30: ...6 2 15006A 13581A 14970A WTP027 14026A 13552A 13536A 13213A 14890A 13720D 13650A DOOR PARTS ...
Page 31: ...6 3 24781M 249401 250202 250201 268712 268711 23572A 23790D WTP004 WTP015 CONTROL PANEL PARTS ...
Page 35: ...6 7 63303A 56170D 63302A 65006B WTT021 WSZ002 BASE PLATE PARTS ...
Page 36: ...8 1 SCHEMATIC DIAGRAM OF P C B ...
Page 37: ...8 2 PRINTED CIRCUIT BOARD ...
