Replacing The Power Switch; Replacing The Battery; Replacing Hard Disc - Bosch BEA 150 Repair Instructions

10.29 Replacing the power switch

Procedure:
1. Remove transformer connection cable 2 (rd,1) from the fuse
and transformer connection cable 5 (gn,2) from the power
switch.
2. Remove the earthing cable (3) from the earthing connector
on the power switch.
3. Press the upper and lower locating springs (4) on the power
switch (5) together and pull the power switch backwards and
out.
4. Insert the new power switch and press it in until the locating
springs click into place.
5. Push the earthing cable onto the tab of the earthing connec-
tor on the power switch.
6. Re-connect all transformer connection cables to the power
switch.
7. Perform a function test (Sec. 10.1 u. 10.2).

10.32 Replacing the battery

i The battery is located on the control module PCB. As a
precaution, the battery should be replaced every three years.
The battery provides back-up energy for the date and time
and - in the case of BEA's without a hard disk - the fault
memory.
Procedure:
1. Unsolder the old battery (1).
2. Solder the new battery in place. Take care to ensure the
correct polarity.
3. Check the date and time (Sec. 5.12).
10.33 Replacing the hard disk
i The hard drive 1 687 022 809 will no longer be available as
of March 2005 as it has been replaced by the Silicon-Disc
1 687 370 291.
! In devices with a release date of 10/2000 or later, this hard
drive must be replaced with the Siliocon-Disc 1 687 370 293
in the course of repair work. Before doing so, it is essential
to read the 1 689 978 495 installation guide included.
In devices with a release date of 10/2000 or earlier, the
1 688 400 322 printed circuit board must also be re-
placed with a 1 682 666 118 printed circuit board with a
release date of 10/2000 or later.
i The procedure described below only refers to replacing and
unsolder the 1 687 022 809 hard drive.
Procedure:
1. Disconnect the power supply cables (1) and the data line (2).
2. Remove the four fastening screws (3) of the hard-disk holder.
3. Remove the hard disk from the holder.
4. Take out the faulty disk drive completely.
5. Insert the new hard disk and secure with the four fixing bolts
(3) at the side.
6. Perform a function test of the drive (Sec. 5.8).
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2
1
4
5
1
2
3
1
3
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