Eberline ESP-1 - Page 27

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The

next

sequence

on

the

display

(after

Ше

"НУ"

display)

goes

back

to

the

beginning

of

the

sequence,

which

is

the

"ALM

AT"

parameter.

Return

to

the

Rate

Meter

Mode

by

pressing

the

MODE

key.

F.

SIMPLE

TROUBLESHOOTING

Although

detailed

troubleshooting

will

be

given

in

section

V,

two

simple

suggestions

for

troubleshooting

will

be

given

here.

1.

Condition:

Blinking

character

or

letter

on

the

display.

Tf

the

character

in

the

upper

left-hand

corner

of

the

display

is

blinking,

the

batteries

are

low

and

need

replacing.

Remove

the

large

screw

in

the

bottom

of

the

case,

and

carefully

remove

the

case

bottom

while

being

careful

not

to

disconnect

the

grounding

wire

which

is

connected

to

the

bottom

of

the

case.

Replace

the

batteries

while

being

careful

to

orient

the

batteries

according

to

the

diagram

printed

on

the

bottom

surface

of

the

compartment

which

holds

the

batteries.

See

figure

5-2.

Condition:

Display

prints

erratic

numbers

or

figures

("garbage").

If

the

display

shows

characters

or

letters

which

are

not

a

part

of

the

usual

display

mode

(displays

"garbage"),

the

program

in

the

microprocessor

has

lost

its

initialization

(has

become

"scrambled").

To

correct

this

condition

and

reinitialize

the

microprocessor,

perform

one

of

the

following

procedures:

a.

Таке

the

batteries

out

of

the

instrument

and

wait

at

least

30

minutes.

This

will

give

adequate

time

for

a

capacitor

(C1)

to

discharge

and

allow

the

microprocessor

to

reinitialize

itself

when

the

batteries

are

replaced

and

the

instrument

turned

on.

b.

Or,if

you

cannot

wait

30

minutes:

After

removing

the

batteries,

perform

the

following

steps:

(1)

Remove

the

side

door

to

the

instrument.

(2)

Refer

to

figure

3-1.

Look

inside

the

instrument

and

locate

capacitor

C1.

This

capacitor

is

located

on

the

top

electronic

board(in

the

top

half

of

the

area

which

is

visible

after

the

side

door

is

removed).

It

is

round

in

shape

and

is

5/8

inch

in

height

and

5/8

inch

in

diameter

and

it

is

usually

green

or

gray

in

color.

(3)

Discharge

this

capacitor

by

touching

the

end

of

a

small

screwdriver

across

the

two

leads

of

the

capacitor.

A

smali

discharge

noise

may

be

heard.

Hold

the

short

for

30

Seconds.

c.

Replace

the

batteries

in

the

instrument,

while

being

careful

to

orient

them

according

to

the

diagram

printed

on

the

bottom

surface

of

the

compartment

which

holds

the

batteries.

d.

Tum

on

the

instrument

and

determine

if

the

condition

is

corrected.

The

display

should

present

letters

and

numbers

which

are

a

part

of

the

usual

display

modes

and

are

"reasonable."

ESP1.MAN/February

1992

2-15

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