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.: 2.5
Ω
Approx.: 110
Ω
Less than: 0.4
Ω
Normal:
∞
Normal:
∞
Normal: Less than 1
Ω
Normal:
∞
PRIMARY
TERMINAL
SECONDARY
TERMINAL
WINDING
FILAMENT
TERMINAL
COMPONENT TEST PROCEDURE
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Содержание MH-2381NBR
Страница 28: ... 6 1 EXPLODED VIEW INTRODUCTION EV MODEL ...
Страница 29: ... 6 2 13552A 14890A 13213A 14026A 14970A 13581A 13536A 13720D WTT028 13650A DOOR PARTS EV ...
Страница 30: ... 6 3 WTP004 268711 24781S 23572A 23806C 25020M 25020S 243501 249401 WTP013 268712 CONTROL PANEL PARTS EV ...
Страница 32: ... 6 5 466003 466001 43501A 43500A 466001 WSZ085 44510A LATCH BOARD PARTS EV ...
Страница 34: ... 6 7 56170D 63303A WSZ002 WTT021 63302A 65006B BASE PLATE PARTS EV ...
Страница 35: ......