Repair work at the outer door
6.3
Replacing the triangle instrument box
CAUTION!
Danger of damaging the electronic.
Circuit boards might be damaged by handling malpractices and touching of its components.
Prior to work at electronic components the technician must take appropriate protective
measures against electrostatic discharge. Wearing ESD shoes and a grounding bracelet
have shown to be useful.
CAUTION!
Danger of mechanical damages.
∅
Never let mechanical components hang at electric cables. Electric cables are not appropriate to hold
bigger components and will be damaged if you do so.
6.3.1
Dismantling the instrument box
Necessary tools Crosstip screwdriver (magnetic), size 2
1.
Disconnect the unit from the power supply.
2.
Remove the covers (C) of the screws (D).
3.
Hold on to the instrument box at its housing (K) and unscrew the screws (D) with a magnetic
screwdriver. Take care that the three screws will not fall into the door frame!*
Hint: To prevent the screws from falling into the door frame, you can apply some bonding agent
etc. on the top of the screwdriver.
4.
Disconnect the plug of the controller cable (G) from the socket on the controller display (F).
Disconnect the grounding cable and the connection from the controller display (F).
5.
Remove the complete instrument box (K).
6.
Install the instrument box by following steps 1 to 5 in reverse order.
7.
If necessary fix the insulating material in the door frame with aluminum tape.
* In spite of all care it may happen that the fixing screws (D) fall into the door frame.
To access them, you need to demount the interior side of the door (chap. 6.2.3).
Service Manual KBF (E5.2) 04-2015
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