2500_Users_Manual-.pdf - 第227页

Ω Ω 2074-2 MAIN PLATE MAIN PLATE SCREW (1 of 2) HOOD MAIN PLATE SCREW (2 of 2) Repair and Replacement Procedures 5. Insert the fuse holder into its slot with the arrow pointing in the same direction as the arrows on the …

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1243-1

SPARE FUSE FUSE HOLDER

Repair

and

Replacement

Procedures

Fuse

Replacement

The

main

fuse

is

located

behind

the

power

cord

input

assembly.

Perform

the

following

procedure

to

replace

the

main

fuse.

CAUTION:

For

continued

protection

against

the

possibility

of

fire,

replace

the

blown

fuse

only

with

a

fuse

of

the

same

voltage,

current,

and

type.

1.

Turn

off

the

2500

and

remove

the

power

cord.

2.

Use

the

edge

of

a

flat-blade

screwdriver

to

pry

open

the

door

covering

the

fuse

holder,

as

shown

in

Figure

7-1.

Figure

7-1

Opening

the

Power

Input

Assembly

to

Access

the

Fuse

Note:

Only

the

fuse

in

the

fuse

holder

is

connected

to

the

circuitry.

The

fuse

on

the

left

is

a

spare.

3.

Pull

the

fuse

holder

out

of

its

slot,

as

shown

in

Figure

7-2.

Figure

7-2

Removing

the

Fuse

4.

Determine

if

the

fuse

is

intact.

If

it

is

blown,

install

a

new

fuse

of

the

same

size

and

rating

(5

A

SlowBlow

for

100/120V

systems

and

3A

SlowBlow

for

220/240V

systems).

7-2

ProMaster

2500

User

Manual

Ω Ω

2074-2

MAIN PLATE

MAIN PLATE

SCREW (1 of 2)

HOOD

MAIN PLATE

SCREW

(2 of 2)

Repair

and

Replacement

Procedures

5.

Insert

the

fuse

holder

into

its

slot

with

the

arrow

pointing

in

the

same

direction

as

the

arrows

on

the

door

and

snap

the

door

closed.

Programming

Electronics

Assembly

Replacement

Removing

the

PE

Follow

the

steps

below

to

remove

the

PE

assembly

from

the

2500.

The

PE

assembly

is

mounted

on

the

underside

of

the

2500's

main

plate.

You

will

need

to

raise

the

main

plate

and

use

a

7/64-inch

hex

wrench

to

complete

the

removal

procedure.

WARNING:

This

procedure

should

be

performed

by

a

service

technician

trained

on

electromechanical

equipment.

Do

not

attempt

this

procedure

unless

you

are

qualified

to

do

so.

Dangerous

high

voltages

are

generated

under

the

main

plate

that

could

cause

a

harmful

electrical

shock.

Turn

off

the

2500

before

you

begin

this

procedure.

To

help

eliminate

damage

from

ESD,

wear

an

antistatic

wrist

strap

that

contains

a

IM

(minimum)

to

10M

(maximum)

isolating

resistor.

The

wrist

strap

should

be

connected

to

the

grounding

plug.

1.

Turn

off

the

2500

and

remove

the

power

cord.

2.

Remove

the

programming

module,

if

one

is

installed.

3.

Unscrew

the

two

captive

hex

screws

located

at

the

front

corners

of

the

main

plate

(see

Figure

7-3).

4.

Lift

the

main

plate

until

it

stops

in

the

fully

upright

position.

Figure

7-3

Location

of

the

Main

Plate

Screws

ProMaster

2500

User

Manual

7-3

Repair

and

Replacement

Procedures

5.

Disconnect

the

red

and

black

power

cable

from

the

connector

on

the

left

side

of

the

controller

/waveform

board.

(Figure

7-4

shows

the

location

and

polarity

of

this

cable.)

7-4

ProMaster

2500

User

Manual