Service manual

36 TTPM3 - Service Manual March 2009
5.4 Solenoids
Solenoids create a linear movement that the TTPM uses to engage and disengage ticket
feed. A solenoid consists of a coil with a hole in it, and a plunger. When voltage is applied
to the coil, the plunger is pulled into the hole by the magnetic field generated. Solenoids
are strongest when the plunger is close to its bottom position. So to get the most pull-
force on the ticket material, the solenoid adjustment must be checked after the printer has
been disassembled / reassembled.
5.4.1 Adjusting input solenoids
Printers where the upper input is for hand-fed tickets have one solenoid others have two.
No ticket should be inserted!
1) Loosen the two screws holding the solenoid coil
2) Press and hold down the plunger
3) Move the coil towards the plunger using the screwdriver, and tighten the screw.
4) Repeat steps 1 - 3 for the other entry if applicable
Press on
plunger
Press screwdriver
back and tighten
Press on
plunger
Press screwdriver
back and tighten
Upper input Lower input
5.4.2 Verifying adjustment of input solenoids
1) Insert a ticket in the entry you want to check
2) Press on the plunger for that entry and verify that the ticket is hard to pull/push.
Release the plunger and check that the ticket moves freely.
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Press on
plunger
Pull to check
that ticket is
held by roller
Press on
plunger
Upper input Lower input