7-18
B. CHECKOUT PROCEDURES
(1) CHECKOUT PROCEDURES FOR FUSE BLOWING
CAUTION:
REPLACE BLOWN FUSE WITH 20 AMPERE FUSE.
NOTES:
• If the fuse is blown by an improper switch operation, replace all switches and the fuse at the same time.
After replacing the defective switches with new ones, make sure that they are correctly connected.
• Check for microwave energy leakage according to INTERLOCK ADJUSTMENT PROCEDURES on page
7-12 when the primary interlock, secondary interlock switches and/or the interlock monitor switches are
adjusted or replaced.
Fuse blows immediately after
the door is closed.
Fuse blows immediately after
the door is opened.
Fuse blows when the door is closed and START
key is touched.
Improper operation of the primary interlock, secondary
interlock switches and/or the interlock monitor switch.
Malfunction of the high voltage transformer; the high
voltage capacitor including the diode, the magnetron,
the blower motor or the circuit board.
PROBLEMS
CAUSES
Summary of Contents for 721.80402400
Page 11: ...5 3 MATRIX CIRCUIT FOR TOUCH KEY BOARD KEY MATRIX...
Page 37: ...8 2 DOOR PARTS II 1005 1000 1002 1006 1011 1007 1009 1004 W109 1381 1008 EV...
Page 38: ...8 4 CONTROLLER PARTS II 2004 2381 2008 2006 W106 MBM2 EV...
Page 40: ...8 6 LATCH BOARD PARTS 4001 W111 W102 4000 4002 4003 4002 4004 EV...
Page 43: ...8 10 INSTALLATION PARTS 6008 W109 6011 6010 VINYL BAG 6009 EV...
