7-20
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) Proper temperature measurement is not obtained.
4) The buzzer does not sound or continues to sound.
5) 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.
8) Some of the indicators do no flicker light up.
9) The clock does not keep time properly.
Summary of Contents for MV-1525B
Page 37: ...8 1 EXPLODED VIEW DOOR PARTS 1000 1008 1002 1001 1006 1005 1007 1004 1003 W105 ...
Page 38: ...8 2 CONTROLLER PARTS 2000 2005 2001 2003 2002 2004 2007 W083 2010 ...
Page 40: ...8 4 LATCH BOARD PARTS 4001 4002 4001 4003 4000 W030 ...
Page 44: ...8 15 SCHEMATIC DIAGRAM OF P C B ...
Page 45: ...8 16 PRINTED CIRCUIT BOARD ...
