7-14
TEST AND CHECKOUT PRECEDURES AND TROUBLESHOOTING
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 LEAD WIRES FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER.
2. ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD (1 LITER OF
WATER IN CONTAINER)IN THE OVEN.
A. TEST PROCEDURES
TRANSFORMER
MAGNETRON
1. Remove wire leads.
2. Measure resistance. (ohm meter scale: Rx1)
• Primary winding High
Low
• Secondary winding
• Filament winding
3. Measure resistance. (ohm meter scale: Rx1000)
• Primary winding to ground
• Filament winding to ground
1. Remove wire leads. Install the magnetron seal in
the correct position. Check that the seal is in
good condition.
2. Measure resistance. (ohm meter scale: Rx1)
• Filament terminal
3. Measure resistance. (ohm meter scale: Rx1000)
• Filament to chassis
Normal: Less than 1 ohm
Normal: Infinite
COMPONENTS
TEST
RESULTS
SECONDARY
WINDING
PRIMARY
WINDING
FILAMENT
WINDING
Approx. 0.2 to 0.5 ohms
Approx. 0.2 to 0.5 ohms
Approx. 50 to 120 ohms
0 ohm
Normal: Infinite
Normal: Infinite
Filament
Antenna
Gasket
Chassis
Summary of Contents for AMV4204AAB
Page 9: ...5 1 OVERALL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM I Check the Model No ...
Page 10: ...5 2 SCHEMATIC DIAGRAM II Check the Model No ADD Noise filter ...
Page 11: ...5 3 MATRIX CIRCUIT FOR TOUCH KEY BOARD 13 12 8 9 10 11 2 1 3 4 5 6 7 KEY MATRIX ...
Page 37: ...8 2 CONTROLLER PARTS 2004 2002 2381 2008 2006 2009 W130 2000 07 Check the Serial No EV ...
Page 39: ...8 4 LATCH BOARD PARTS W111 4004 4003 4002 4002 4001 4000 EV ...
Page 43: ...8 8 INSTALLATION PARTS VINYL BAG 6011 6009 6010 6008 EV ...
