Replacing The Internal Printer; Replacing The Printing Mechanism; Replacing The Controller Pcb - Bosch BEA 150 Repair Instructions

10.21 Replacing the internal printer

i In order to remove the internal printer without problem, you
must first remove the exhaust-gas analyzer module. Take out
the printer paper before removing the printer.
Procedure:
1. Remove the cables for the power supply (1) and data
transmission (2) from the controller PCB of the printer.
2. Remove the four fixing nuts (3) of the printer using a size 7
socket wrench.
3. Take out the faulty printer and insert the new one.
4. Secure the new printer with the four fixing nuts.
5. Plug the power supply and data transmission cables into the
printer controller PCB.
6. Perform a function test of the printer (Sec. 5.10).
7. Re-install the exhaust-gas analyzer module.

10.21.1 Replacing the printing mechanism

Procedure:
1. Remove the printer (see Sec. 10.21).
Remove the plastic cover (1) of the printing mechanism.
2. Carefully pull the foil cable (2) out of receptacle J 10 on the
controller PCB.
3. Unscrew the fixing bolt (3) for the printing mechanism (under
the foil cable).
4. Pull the printing mechanism downwards and out.
5. Insert the new printing mechanism. On installing take care to
ensure that the two lugs (4) of the printing-mechanism holder
are in the recess of the mechanism. Take care not to damage
the foil cable (2) when screwing in the fixing bolt (3).
6. Route the foil cable through the aperture (5) in the plastic
panel.
7. Plug the foil cable into receptacle J 10 on the controller PCB.
8. Push in the cover for the printing mechanism from beneath
and secure with the bolt.
9. Re-install the printer.
10. Perform a function test of the printer (Sec. 5.10).

10.21.2 Replacing the controller PCB

Procedure:
1. Remove the printer (see Sec. 10.21).
2. Remove the power supply cables (1), the data line (2) and the
foil cable (3) from the controller PCB.
3. Unscrew the fixing bolts (4).
4. Insert the foil cable in receptacle J 10 of the new controller PCB.
5. Secure the new controller PCB with the bolts (4).
6. Plug the power supply cables and the data line into the
controller PCB.
7. Re-install the printer.
8. Perform a function test of the printer (Sec. 5.10).
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