(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.
NOTE:
A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS
SERVICED FOR ANY REASON.
(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.
(5) Wrong figures appear.
(6) The figures of all digits flicker.
(7) Some of the indicators do no light up.
(8) The clock does not keep time properly.
-26-
Summary of Contents for 721.62342200
Page 10: ...9 B MATRIX CIRCUIT FOR TOUCH KEY BOARD Figure 4...
Page 34: ...33 1001 1000 1004 1002 1006 1007 1005 1003 EV DOOR PARTS...
Page 35: ...34 2000 2002 2001 2006 W106 2004 2381 EV CONTROL PANEL PARTS...
Page 36: ...35 3034 3003 W105 3009 3002 3008 3001 W103 W118 EV OVEN CAVITY PARTS...
Page 37: ...36 W102 4003 5015 4002 4002 4000 EV LATCH BOARD PARTS...
Page 40: ...39 W101 W108 6007 5008 6000 6001 9000 EV BASE PLATE PARTS...
