6
( )
Attach and solder three 16" pieces of #24 (light) gauge hookup to each
of the three switch-terminals on the roller cam microswitch located on
the right hand side of the printer mechanism. On the opposite end of
the upper lug's wire, attach a male pin. Attach a female pin to the
unconnected end of, the remaining two lug wires. Solder.
( )
Insert each of the pins into the specified pin location of a six pin
Molex male plug using the table below. The pins must be installed from
the back or numbered side of the connector:
ROLLER CAM SWITCH LUG
CONNECTOR PIN #
upper 3
middle 1
lower 2
( )
Complete wiring steps 1 thru 4 of the wiring table if you will be
operating the printer on 120 VAC. For 240 VAC, 50 Hz operation, skip
wiring steps 2 and 3 and instead connect together and insulate
transformer T1's brown and black-red wires. Then connect T1's remaining
black and brown-white wires just as described in the wiring table steps
1 and 4.
( )
Complete wiring steps 5 thru 10 of the wiring table and then snap fuse
Fl into place.
( )
Complete wiring steps 11 thru 34 of the wiring table. A female
connector pin will be attached to one end of each of the wires. Make
absolutely sure each pin is installed correctly into the specified hole
of the correct connector block, since the pins cannot be removed after
installation. The pins must be installed from the back or numbered side
of the connector. Take note that J1 on the PR40B board is a 15 pin male
connector block while J1 on the PR40A board is a 12 pin male connector
block.
( )
Check to make sure that all electrical connections have been soldered.
Cut off any extra length of the tabs on C4 if necessary.
( )
Snap the two PC boards into the chassis. The larger PR40A board should
be oriented so the upright transistors are adjacent the power
transformer, while the smaller PR40B board should be oriented so the 15
pin connector is near the power transformer.
( )
Plug each of the J1 connectors onto their respective mates.
( )
Set the printer chassis upside down (components exposed) and set the
print mechanism itself right next to it. Connect the connector from the
print mechanism's motor wires to the PR40B's J2 connector block.
( )
Attach the connector from the print mechanism's roller cam microswitch
wires to the PR40A's J3 connector block.
Installing the Ribbon and Paper Roll
The paper roll is installed by pressing the plastic roll holder thru the
center of the paper and placing the spool on the printer so the paper pulls from
the inside back of the printer. This allows the paper to contact the paper guides
at all times thus centering the paper for printing. Feed the paper thru the
guides adjacent the paper roll and advance the platten.
The ribbon is installed by first orienting the spools so the ribbon is fed
and spooled from the outside of the spools and then snapping the spools into