(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.
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Summary of Contents for 721.62222300
Page 8: ...6 OVERALL CIRCUIT DIAGRAM A I SCHEMATIC DIAGRAM Check the Model No 7...
Page 9: ...8 A II SCHEMATIC DIAGRAM Check the Model No ADD Noise filter...
Page 10: ...9 B MATRIX CIRCUIT FOR TOUCH KEY BOARD Figure 4...
Page 34: ...33 1003 1001 1000 1006 1007 1004 1005 1013 1002 EV DOOR PARTS...
Page 35: ...34 2000 2002 2001 2381 2006 W106 2003 2005 2007 2004 2010 EV CONTROL PANEL PARTS...
Page 37: ...36 4003 4000 4002 4002 W102 EV LATCH BOARD PARTS...
Page 40: ...39 W101 6002 W109 W108 5008 6000 6001 9001 EV BASE PLATE PARTS...
