5
( )
Attach transformer T1 to the chassis using four #8-32 X 3/8" screws,
flatwashers and nuts. Run the screws thru the outside of the chassis,
place a flatwasher between the inside of the chassis and the
transformer leg, place another flatwasher on the top of the leg and
secure with a #8-32 nut and lockwasher. Orient the transformer so the
side with the green secondary leads is toward the inside of the
chassis.
( )
Snap the eight PC board standoffs into their respective holes from the
inside of the chassis.
( )
Attach the two large capacitor clamps to the chassis using #6-32 X 1/4"
finishing screws, lockwashers and nuts. Orient the clamps as shown in
the wiring diagrams.
( )
Snap PR40B's electrolytic capacitor C4 into place in the two capacitor
clamps on the front of the chassis. Be sure to orient the capacitor as
shown in the wiring diagrams. The negative terminal of the capacitor
must be nearer the bottom of the chassis.
( )
Attach toggle switch S1 to the chassis using the supplied finishing
washer and nut. Orient the switch as shown in the wiring diagram.
( )
Crimp the strain relief onto the line cord at a point about six inches
from the end of the cord using a pair of pliers. While compressing the
strain relief insert the short end of the line cord and the strain
relief into the hole provided on the back of the chassis and release.
Attaching Connectors to the Print Mechanism
The print mechanism is supplied with two connectors installed, one for the
print head and one for the printer motor. The connector for the print head is a
fifteen pin AMP connector and will mate to a connector located on the PR-40A
board. The connector for the printer motor is a nine pin AMP connector and must
be cut off right at the connector so that another connector may be installed in
its place.
( )
Cut off the nine pin motor connector for the print mechanism right at
the connector.
( )
You should note that the print mechanism motor is divided into two
distinctive halves. The inner half has one black and one white wire
coming out of it and the outer half also has one black and one white
wire coming out of it. Attach and solder a female connector pin to the
end of each of the four wires. Insert the wires into the respective
pins of a six pin Molex male connector as listed below:
MOTOR WIRE
CONNECTOR PIN #
inside white
1
outside white
3
outside black
4
inside black
6
The word inside refers to being nearest the body of the printer while
outside is farthest away. The wires are each electrically dependent and
must be connected exactly as listed in the preceding table for the
printer motor to run correctly.