Braillo 200, Instruction Manual

Page: 42 / 62

BRAILLO
M
NORWAY AS B 200
38
3.8 How to Replace Short Pivot Arms
See figures on page 39.
If for some reason the short pivot arms need replacement, (worn or broken) this is the procedure to
follow:
Short pivot arm situated on the upper unit:
1. Remove the magnet rack (the one in front of the defect short pivot arms) as described on page 33.
2. Take off the short pivot arm fastener (1). Pull the short pivot arms straight out of its slot, and the
shaft will come out as well. The short pivot arms shaft consists of two parts, each containing 21
short pivot arms.
3. Put the new short pivot arms back in place, be sure to have the shafts all the way into its slot.
4. Fasten the magnet rack back on place.
Short pivot arm situated on the lower unit:
This procedure will take some more effort to do. This is due to the fact that the printing pin will fall down
if the lower short pivot arms are taken out, and then you cannot get the new short pivot arm back in place.
The procedure here is to take the beam with the short pivot arms out of the Printer before replacing the
short pivot arm. Do as described below:
1. Remove the two upper magnet racks (A and B).
2. Remove the paperfeed tractor assembly (15). Leave the unit on the printer’s frame without
disconnecting the cables.
3. Remove the input paper guide (2).
4. Remove the output paper guide (14).
5. Loosen the belt tightening wheel (3), and remove the belt (4).
6. Loosen the four big bolts (5) on top of the frame (6). Take this bolts all the way out.
7. Now the top part of the frame (6) with the upper shaft must be lifted upwards and placed aside.
Note that the top part of the frame (6) is precisely aligned with the two columns, and could be a
little tricky to lift upwards. The best way is to pull it all the way in one “snap”. If this cannot be
done, it should be wriggled carefully upwards, one side at the time, repeatedly until the unit can
be lifted off.
8. Then, lift the upper beam (7) carefully upwards and place aside. Note that the adiprene pressure
springs (8) are now loose and may fall out. There are eight adiprene springs on the upper unit.
Also take care if there are some steel shims under the adiprene springs, they can easily fall out and
disappear.
9. Lift out the upper paper shoe (9), take out the two blue springs (10), and the two green springs
(11).
10. Lift out the lower paper shoe (12), again take care of the adiprene springs, and eventually the steel
shims.
11. Lift the lower beam (13) out, and the short pivot arm can be replaced like described for the upper
unit above.
12. Assemble in reverse order. To be able to get the belt on correct, see chapter 3.10 “Eccentrics,
Adjustment”.