-24-
NOTE: A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS
SERVICED FOR ANY REASON.
(3) CHECKOUT PROCEDURES FOR CIRCUIT BOARD
The following symptoms indicate a defective circuit
board.
(1) The start function fails to operate but the high
voltage Systems, the interlock switches, the door
sensing and the relay check good.
(2) The unit with a normal relay continuously operates.
(3) The buzzer does not sound or continues to sound.
(4) Some segments of one or more digits do not light up, or
they continue to light up, or segments light when they
should not.
(6) Wrong figures appear.
(7) The figures of all digits flicker.
(8) Some of the indicators do no light up.
(9) The clock does not keep time properly.
Summary of Contents for 721.66339
Page 9: ...B MATRIX CIRCUIT FOR TOUCH KEY BOARD 8 Figure 4...
Page 32: ...31 DOOR PARTS 1004 1000 1005 1007 1006 1002 1013 1003 1001 EV...
Page 33: ...32 CONTROLLER PARTS 2000 2002 2006 W106 2004 2381 EV...
Page 34: ...33 OVEN CAVITY PARTS 3002 W107 W103 3001 3003 3008 3009 W105 3034 EV...
Page 35: ...34 LATCH BOARD PARTS W102 4002 4003 4002 4004 4000 4001 EV...
Page 37: ...36 BASE PLATE PARTS 5008 W101 W108 6000 6007 6001 EV...
