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.
Содержание Expert EXV 1711B
Страница 9: ...5 1 A B C MODEL SCHEMATIC DIAGRAM OVERALL CIRCUIT DIAGRAM ...
Страница 38: ...8 2 CONTROLLER PARTS 24781M 23572A 26638A 24810P 268711 WTP018 07 EV ...
Страница 40: ...8 4 LATCH BOARD PARTS 466001 43501A 43500A 466003 466001 44510A WSZ084 EV ...
Страница 43: ...8 7 INSTALLATION PARTS EV 63300M 63861A 65862D 65862B ...
Страница 44: ...8 14 SCHEMATIC DIAGRAM OF P C B ...
Страница 45: ...8 15 PRINTED CIRCUIT BOARD ...
Страница 46: ......