Tectrix Climbmax 150 - No Speed Control and no Error Message Is Displayed; Speed Control Is Jerky or Varies Speed

Tectrix Climbmax 150

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21.

No

Speed

Control

And

No

Error

Message

Is

Displayed

21.1

Description

If

there

is

no

pedal

resistance

and

the

speed

display

doesn't

report

climbing

speed,

the

RPM

sensor

is

not

functioning

orthe

signal

is

not

reaching

the

display

board.

As

you

press

the

up

arrow

key

in

the

manual

mode

a

single

flashing

LED

goes

up

and

stays

at

the

speed

you

have

selected.

This

is

the

command

speed

LED.

The

LED's

that

fill

in

below

the

command

LED

are

the

actual

speed

indicators.

If

you

start

climbing

after

the

command

LED

is

set

and

the

speed

indicators

don't

light

and

speed

is

not

controlled,

then

the

microproces-

sor

does

not

see

the

RPM

signal.

Note:

Sometimes

it

is

possible

to

get

a

'NO

SLACK'

or

'NO

BRAKE'

error

when

climbing

with

this

problem.

21.2

Primary

RPM

Test

Enter

Test

Mode

(see

section

3)

and

check

the

LED's

next

to

"TIME

REMAINING"

and

"ELAPSED

TIME."

When

you

step

on

the

pedal

they

should

flash

on

and

off.

This

is

the

raw

input

from

the

RPM

sensor.

If

those

LED's

are

not

flashing

make

sure

that

the

RPM

disk

is

turning

and

aligned

with

the

RPM

sensor

(see

section

32)

then

replace

and

test

these

parts

in

the

following

order

(also

see

section

21.3):

1.

RPM

sensor

(see

section

32),

2.

power

board

assembly

(see

section

29),

3.

display

ribbon

cable

(see

section

31),

4.

display

board

(see

section

30).

21.3

Secondary

RPM

Test

The

ClimbMaJC

has

an

oscilloscope-like

viewing

function

of

the

RPM

output.

Enter

the

Test

Mode

(see

section

3)

and

press

the

DISPLAY

SHIFT

key.

Step

on

a

pedal

and

watch

the

INTERVAL

display.

It

should

fill

up

one

level

at

a

time

as

the

flywheel

slows.

If

there

are

holes

or

peaks

in

the

display

that

repeat,

check

that

the

RPM

disk

and

sensor

are

clean

and

that

the

disk

is

not

wobbly,

scratched

or

damaged.

Also

verify

that

the

RPM

Sensor

is

adjusted

properly

(see

section

28).

If

both

the

disk

and

sensor

appear

to

be

all

right,

test

by

replacement

in

the

following

order:

1.

power

board

assembly

(see

section

29),

2.

display

ribbon

cable

(see

section

31),

3.

display

board

(see

section

30).

22.

Speed

Control

Is

Jerky

Or

Varies

Speed

22.1

Friction

Belt

&

Flywheel

Remove

the

cover

(see

section

25).

Remove

and

inspectthe

friction

belt

for

wear

and

the

flywheel

surface

for

belt

residue

(see

section

28).

If

there

is

considerable

wear

and

residue,

replace

or

reverse

the

belt

end

for

end

and

use

Scotch

Brite

or

sandpaper

to

remove

the

residue,

then

retest

the

ClimbMaJC.

Page

22

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