5-8
COMPONENT TEST PROCEDURE
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.
HIGH VOLTAGE
TRANSFORMER
(Wire leads removed)
MAGNETRON
(Wire leads removed)
Approx.: 1.4 ohm
Approx.: 90 ohm
Less than: 1 ohm
Normal: Infinite
Normal: Infinite
Normal: Less than 1 ohm
Normal: Infinite
PRIMARY
TERMINAL
SECONDARY
WINDING
FILAMENT
WINDING
TERMINAL
COMPONENTS TEST
PROCEDURE RESULTS
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
Summary of Contents for NN-J155WB EPG
Page 9: ...SCHEMATIC DIAGRAM 4 3 1 3 5 7 8 ...
Page 29: ...6 2 DOOR PARTS 13552A 13213A 13581A 13720D 14970A 14026A 13536A 14890A EV ...
Page 32: ...6 5 LATCH BOARD PARTS 56912B 948501 466001 466003 WSZ085 466001 43500A EV ...
Page 42: ...8 1 SCHEMATIC DIAGRAM OF P C B ...
Page 43: ...8 2 PRINTED CIRCUIT BOARD ...
