Electrolux T3900 - Page 33

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21. Controls
Service
manual
21
Contents
Control locations:
User module circuit board Standard door . . . . . . . . . . . . . . . . . . . . . 21.3
User module circuit board Sliding Door. . . . . . . . . . . . . . . . . . . . . . . 21.4
Control unit with main circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . 21.5
Control unit with main circuit board Sliding Door. . . . . . . . . . . . . . . . 21.6
Sliding Door troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.7
Replacement of main circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.9
Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.10
Circuit boards MUST be protected
from static electricity!
Remember!
• Always use an earthed wrist strap.
• Without the antistatic wrapping, the board is unprotected.
• Keep all items that can cause static discharge (such as plastic bags,
fabric, and the like) away from the circuit board.
• Items like plastic, foam plastic, nylon, or cellophane wrapping are all big
generators of static electricity.
• Static electricity can not be felt, heard or seen till the voltage reaches
2500V.
• Board components can be damaged by static electricity under 100V.