2500_Users_Manual- - 第237页

2310-1 PRINT DRIVE MOTOR SCREW (1 of 4) Repair and Replacement Procedures Replacing the Print Drive Motor Follow the steps below to replace the print drive motor. 1. Turn off the 2500 and remove the power cord. 2. Unplug…

Repair

and

Replacement

Procedures

10.

Follow

the

same

procedure

to

remove

the

left

orbital

alignment

block.

11.

Support

the

assembly

with

one

hand

while

you

remove

the

two

7/64-

inch

hex

retaining

screws

(with

the

white

plastic

standoff)

on

the

tube

clamp

support

braces.

12.

Carefully

slide

the

back

end

of

the

orbital

assembly

off

the

orbital

cam

spindle.

Be

careful

that

the

white

bushing

between

these

two

is

not

lost

or

damaged.

13.

When

the

assembly

is

off

the

spindle,

slide

the

entire

assembly

toward

the

back

of

the

2500

until

it

is

free

from

the

two

front

support

braces.

Let

the

assembly

dangle

from

the

cables.

14.

Remove

the

orbital

cam

from

the

motor

shaft.

Now

you

are

ready

to

remove

the

output

orbital

motor.

15.

From

below

the

main

plate,

remove

the

four

1/16-inch

hex

screws

that

holds

the

output

orbital

motor

to

the

main

plate.

16.

Lower

the

main

plate

and

remove

the

output

orbital

motor.

17.

Place

the

new

output

orbital

motor

in

position

on

the

main

plate.

Make

sure

the

power

cable

is

oriented

to

the

right

side

of

the

new

output

orbital

motor.

18.

Guide

the

motor

cable

through

the

hole

in

the

main

plate.

19.

Insert

the

four

motor

wires

into

the

white

plastic

Molex

connector.

Be

sure

to

insert

the

wires

in

the

same

order

(and

orientation)

as

shown

in

Figure

7-9.

20.

The

output

orbital

motor

shaft

has

a

flat

edge

on

one

side.

Turn

the

shaft

until

the

flat

edge

faces

the

front

of

the

2500.

21.

The

orbital

cam

has

a

small

hole

on

its

outer

edge.

Position

the

cam

on

the

motor

shaft

so

this

small

hole

is

positioned

on

the

right

side

(input

side)

of

the

shaft.

CAUTION:

When

you

re

加

sta

〃仍

e

orbital

assembly,

make

sure

the

white

bushing

that

fits

over

the

spindle

stays

加

position.

22.

Reinstall

the

assembly

(in

reverse

order

from

the

procedure

in

steps

11-13

above).

23.

Reinstall

the

left

and

right

alignment

blocks

and

the

optic

block.

24.

Rotate

the

orbital

cam

to

make

sure

it

spins

freely

and

does

not

rub

against

the

underside

of

the

main

plate.

If

you

feel

or

hear

the

cam

rubbing

against

something,

grasp

the

outer

edge

of

the

cam

and

gently

pull

it

approximately

3/32

of

an

inch

away

from

the

underside

of

the

main

plate

and

recheck

it

again.

25.

Install

the

collar

over

the

cam

spindle.

The

slit

in

the

collar

must

be

aligned

with

the

slit

in

the

spindle

(see

Figure

7-10).

26.

Turn

the

orbital

cam

one

final

time

to

check

for

smooth

rotation

with

no

rubbing.

7-12

ProMaster

2500

User

Manual

2310-1

PRINT DRIVE

MOTOR

SCREW (1 of 4)

Repair

and

Replacement

Procedures

Replacing

the

Print

Drive

Motor

Follow

the

steps

below

to

replace

the

print

drive

motor.

1.

Turn

off

the

2500

and

remove

the

power

cord.

2.

Unplug

the

motor

cable

from

the

motor

power

supply.

3.

Push

down

on

the

belt

tension

wheel

and

remove

the

drive

belt.

4.

Loosen

the

5/64-labeler

knob

set

screw

(two

screws

are

used

on

the

thermal

printer)

and

pull

the

knob

off

the

motor

shaft.

5.

Remove

the

four

3/32-inch

hex

screws

that

hold

the

motor

to

the

labeler

plate

and

remove

the

motor.

See

Figure

7-11.

6.

Install

the

new

motor

and

reinstall

all

the

components

you

removed.

Figure

7-11

Removing

the

Print

Drive

Motor

(Dot

Matrix

Printer

shown;

Thermal

Printer

similar)

Replacing

the

Dot

Matrix

Print

Head

Follow

the

steps

below

to

replace

the

print

head.

If

you

need

to

adjust

the

gap

between

the

platen

and

the

print

head,

refer

to

the

“Adjusting

the

Print

Head

Gap”

procedure

on

page

5-24.

The

impact

print

head

is

mounted

on

a

small

printed

circuit

board

(PCB).

Do

not

attempt

to

remove

the

print

head

from

the

PCB.

The

new

print

head

is

mounted

on

a

new

board,

which

should

be

installed

as

one

assembly.

1.

Turn

off

the

2500

and

remove

the

power

cord.

2.

Use

a

3/32-inch

hex

wrench

to

remove

the

two

hex

screws

that

hold

the

print

head

to

the

print

head

mounting

blocks.

3.

Remove

the

two

cables

(J-22

and

J-23)

from

the

cable

connectors

on

the

print

head

PCB.

ProMaster

2500

User

Manual

Note:

Identify

and

mark

the

polarity

of

the

cables

before

you

remove

them.

4.

Install

the

new

print

head

assembly.

7-13

2390-1

PRINT HEAD

SCREW (1 of 2)

MOUNTING

BLOCK (1 of 2)

Repair

and

Replacement

Procedures

Figure

7-12

Removing

the

Print

Head

Replacing

the

Thermal

Print

Head

The

thermal

print

head

is

mounted

on

a

small

printed

circuit

board

(PCB).

Do

not

attempt

to

remove

the

print

head

from

the

PCB.

The

new

print

head

is

mounted

on

a

new

board,

which

should

be

installed

as

one

assembly.

1.

Turn

off

the

2500

and

remove

the

power

cord.

2.

Use

a

3/32-inch

hex

wrench

to

remove

the

hex

screw

that

holds

the

print

head

to

the

print

head

mounting

block.

Note:

In

the

older

style

thermal

printer,

there

are

two

print

head

mounting

screws

and

limited

clearance

for

a

full-size

hex

wrench

to

reach

the

inside

print

head

mounting

screw.

Use

an

L-shaped

3/32-inch

hex

wrench

that

has

been

modified

by

grinding

down

the

extension

end

so

让

is

between

1/4

-inch

and

5/1

6-inch

long.

Use

a

7/64-inch

hex

wrench

to

remove

the

hex

screw

that

holds

the

ribbon

cable

clamp.

3.

Pull

out

the

print

head

assembly

and

unplug

the

ribbon

cable

(J-27)

from

the

print

head

PCB

cable

connector.

4.

Install

the

new

print

head

assembly.

7-14

ProMaster

2500

User

Manual