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 LMV1925SB
Page 9: ...5 1 SCHEMATIC DIAGRAM OVERALL CIRCUIT DIAGRAM ...
Page 10: ...5 2 MATRIX CIRCUIT FOR TOUCH KEY BOARD CUSTOM SET CUSTOM COOK Q DEFROST Ez On ...
Page 38: ...8 2 CONTROL PANEL 24781M 24810P 23572A 07 268711 WTP013 WTT029 23506A EV ...
Page 40: ...8 4 LATCH BOARD 466001 43501A 43500A 466003 466001 44510A WSZ084 EV ...
Page 44: ...8 14 SCHEMATIC DIAGRAM OF P C B ...
Page 45: ...8 15 PRINTED CIRCUIT BOARD ...
