Johnson T8000 User manual

Brand: Johnson

Model: T8000

Category: Treadmills

Type: User manual

Johnson T8000 is a treadmill that comes with a state-of-art design and manufacturing. It is intended for home use only and is warranted against defects in workmanship and materials. The warranty provided is one and a half years, starting from the date of production. Should you come across any defects during the warranty period due to workmanship or materials undertaken by JHT, you will receive a free replacement.

The treadmill has a 180/400 KPH: speed range and a 0 incline grade. It has an 18-volt direct current supply necessary for the operation of the MCB circuitry. In addition, it features a regulated 11-volt direct current supply necessary for the operation of the PCB.

Make by JearyCheng,

KevinChang

Aug.25.2004

JOHNSON T8000

Treadmill

Service Manual

Make by JearyCheng,

KevinChang

Aug.25.2004

TABLE OF CONTENTS

 SECTION 1: LIMITED WARRANTY……………………………………..1-1

 SECTION 2: EXPLODED DIAGRAM…………………………………….2-1

 SECTION 3: WIRING DIAGRAM…………………………………………3-1

 SECTION 4: TROUBLE SHLOOTING…………………………………...4-1

 SECTION 5: PARTS REPLACEMENT……………………………………5-1

 SECTION 6: PREVENTIVE MAINTENANCE…………………………...6-1

 APPENDIX : RECOMMENDED TOOLS

1-1

SECTION 1

LIMITED WARRANTY

 Comments and Questions………...………..……....………...1-2

 Scope of Warranty…………………….…...........…………1-2

 Intended Use………………………..........……..….……….1-2

 Warranty Period………..……….........…………….1-3

 Defects Replacement…………………………...………….1-3

 Safety Stock of Warranty Parts……………………….......1-3

 Warranty Procedure……………….........………………..1-3

 Technical Support....................................................................1-4

1-2

Limited Warranty

Johnson Health Technology Company and its employees are committed to

providing our customers with the state-of-art designed and manufactured fitness

equipment. This Limited Warranty and Service Procedure states JHT’s warranty

policy and warranty procedures.

We welcome comments and questions regarding our products. Please contact us at

Customer Service

Johnson Health Technology Company

P.O.BOX 22-100

Taichung, Taiwan, R.O.C

Telephone: 886-4-25667100

Facsimile: 886-4-25683456

E-mail: [email protected]

All JHT products are warranted against defects in workmanship and materials.

Any repairs to the parts itself, especially the electronics parts, will then void the

warranty unless the rework is authorized in a written format by JHT in advance.

This warranty will also not cover any damage, failure or loss caused by accident,

misuse, neglect, abuse, improper assembly, or failure to follow instructions or

warning in the owner’s manual.

JHT products may be warranted for just home use only, all distributors are

advised to consult the owner’s manual for the limitations of the application.

1-3

Generally, if not otherwise specified, JHT provides one and a half year warranty

for all JHT products starting from the date of production. Warranty coverage for

each product will be detailed in the respective product owner’s manual.

The distributor should send out the replacement parts without charge within 24

hours for any customer’s warranty claim due to defects of JHT workmanship or

materials and the defects occurs during the warranty period. The distributor

should also send out the replacement with charge within 24 hours for the service

claims due to accident, abuse, neglect, or for the claims with the warranty expired.

All the importers and distributors are required to keep an inventory of spare parts

especially for those of which are recommended by JHT to service their customers

in time. Distributors are advised to purchase the spare parts at 2%~3% of the total

value of each shipment along with the shipment order or to always keep in their

stock at least 2 to 5 pieces of each spare parts, especially the electronics parts, of

the different model. If there is any importer or distributor failed to do so and wish

that JHT send the replacement parts by express, it will be within JHT’s discretion

how to charge the distributor for both the replacement parts and shipment cost. A

list of recommended spare parts could be provided with the shipment sales

confirmation as long as the request is made to your JHT sales representative and is

contained in the service manual as well. Please refer to the parts list to fill out the

Parts Order Form and send it to your sales representative to order the parts as

required.

Defective electronics: To receive a credit accordingly, the distributor must collect

the defective electronics, attach a label or tag on the defective part to identify the

following information as a minimum requirements which contain the production

serial number, symptom of failure and the warranty claim number. Send the

1-4

defective electronics back to JHT in a routine basis (monthly is preferred). Fill out

the warranty claim form and send it to JHT.

Defective motors: The distributor may choose by himself the disposition of the

failed motors under warranty. You can either send the motors to your local motor

manufacturer’s authorized dealer for repair or you can remove the name plate,

attaching a label on it to identify the failure symptom and send it back to JHT on a

routine basis (monthly is preferred).

Defective Mechanical Components/Accessories: To receive a credit or the free

replacement parts for the defective mechanical component under warranty,

simply fill out a warranty claim form attached with the photo, graph or other

media that could show us the outlook of the failure. Send all the information to

JHT for approval.

Defect Return:

After finishing the above processes with each kind of component,

the distributors are then required to contact JHT for a returned authorization

and shipping arrangement (This may not be required for the mechanical defects).

Once it is authorized by JHT, the distributor should pack the parts in the most

appropriate way and send the package by the way as advised by JHT.

Issuing Credit: It is within JHT’s discretion to issue a credit or send parts with

no charge to the distributors after the returned parts have been verified to be

really defective. If the parts returned has been verified to be non defective and is

good enough to be used, it will be sent back to the distributor. The distributor

will be responsible for all the shipping cost incurred. No credits will be issued on

the defective returns that can be proved to fail due to misuse, neglect or abuse.

If you have any trouble in troubleshooting the failures or if you wish to complain

for a mass failure to JHT, you can fill out the Field Failure Report to JHT. JHT

will respond to your report within one day. You may call JHT customer service

department directly as well if you wish, but before doing this it is preferred for

you to send out the forms in advance.

SECTION 1

WIRING DIAGRAM INSTRUCTION

WIRING DIAGRAM (MCB-220V)…T8000

¾ T1-----Motor wire (black)

¾ T2-----Motor wire (red)

¾ T3----- CE (N3 of Capacitor)

Non CE (D1 of on/off switch)

¾ T4-----CE (N4 of Capacitor)

Non CE (D3 of on/off switch)

¾ T5-----8-pin console cable

¾ T6-----6-pin console cable

¾ T7----- Elevation cable

T8-----Speed sensor cable

SECTION 2

CONSOLE ENGINEERING MODE GUIDE

Engineering mode (T8000)

1.Hold both incline “↑” and speed “+” at the same time about 3sec to get into the

engineering mode. The display will show “ENGINEERING MODE”

Hold UP&FAST

Key 3's

PO : LOW SPEED LEARN MODE

P1 : HIGH SPEED LEARN MODE

P2 : MIDDLE SPEED LEARN MODE

P4 : LOW ELEVATION LEARN MODE

P5 : HIGE ELEVATION LEARN MODE

P6 : UNIT

P7 : LIMIT TIME

P8 : USER TIME

P9 : SET WEIGHT

P10 : MACHINE

P11 : TOTAL TIME

P12 : TOTAL DIST

P13 : VERSINO

P14 : LANGUAGE

revious Parameter

to rear Parameter

DOW

Parameter increase

FAST

Parameter decrease

SLOW

Safe the Parameter

STAR

Decide the Parameter

SELE

in the Parameter

NUMBER KEY

ort the Parameter

ENTE

cancel the Parameter

RESE

DOWN & SLOW 3'S reset the accumulate

iddi

RESET

HOLD STOP 3'S

Press safe key

Model

Unit

Min Speed Max speed

KPH 0.8K 20.0K

T8000 MPH 0.5M 12.0M

Address Description Default Value Min Value Max Value

P0 low speed learn mode 77

P1 hige speed learn mode 600

P2 middle speed learn mode 300

P4 low elevation learn mode 55

P5 hige elevation learn mode 200

P6 unit KPH

P7 limit time 90:00 10:00 90:00

P8 user time 20:00 10:00 90:00

P9 set weight KPH:80/MPH:150 KPH:22/MPH:50 KPH:180/MPH:400

P10 machine T8000

P11 total time

P12 total dist

P13 version

P14 language English

Notice! Press ENTER/SELCET will store displayed value

Press Elevation UP/DOWN will increase/decrease address Px

Press Speed UP/DOWN will increase/decrease displayed value.

PRODUCE TEST :

You can go ahend to do the hardware function test right after entering this engineer

mode.

AUTO CHECK :

The console will do the auto calibration including speed and incline .

SECTION 3

MCB LED INSTRUCTIONS

MCB LED Indication

Note:

Use a multi-meter

to test the power

socket.

220v mode:

210v 〜 250v

Note:

For MCB

(Lower-board)

Note: For PCB

(Upper-board)

When we designed the lower control board (MCB) for our

treadmills we placed status lights (LEDs) on it to aid in field

diagnosis and repair. The following is an overview of what

these indicator lights mean and what can be checked with

them in the field.

Light- When lit, this indicates that the MCB has power

applied. If this LED is off, check connections, power

switch position, fuses and circuit breakers. If the AC light

is not lit, the MCB will not operate.

Light- When lit, this indicates the

presence of the unregulated 18 volt direct

current supply necessary for the operation of the MCB

circuitry. If dim the supply voltage may be marginal and if

out, not present or inadequate. If this light is not lit, the

MCB will not operate even if the PCB is operating properly.

If the AC light is lit and the +11V and +18V light are not,

check fuse F1. If the +11V light is lit and the +18V light is

not lit, return the board to JHT.

Light- When lit, this indicates the presence of the

regulated 11 volt direct current supply necessary for the

operation of the PCB. If dim the supply voltage may be

marginal and if out not present or inadequate. If the light

is not lit, the console will not operate. If the AC and +18V

light are lit and the +11V light is not, check for shorted

cabling or a defective upper console. If the AC light is lit

and the +11V and +18V lights are not, check fuse F1.

MTR

+18V

CON

MCB LED Indication

Note:

over 10 Amps when

lit

Note:

a control command

from the PCB to the

MCB

Light- When lit, indicates the High Power Direct Current

supply for the motor (B+) is online. This light will remain

lit for a period of time after power has been removed from

the MCB. While the MTR light remains lit, anyone

handling the MCB should use caution since there is still a

hazardous potential present. When the MTR light is off,

B+ is not present and the motor controller will not operate.

If the MTR and I-limit lights are off, verify motor

connections and proper motor operation. If the MTR light

is off and the I-limit light is on, the MCB shut off due to an

extended current limit condition. In this case, resetting

the PCB or cycling power will eliminate the problem.

However, the treadmill should be thoroughly examined for

wear or damaged components which might have lead to

the extended current limit condition. If this problem

persists, return the board to JHT.

Light- When lit, indicates the current

to the motor has reached the peak

current trip point of 10 Amps. The MCB will limit the

current when the current limit point has been reached. If

the current limit continues for roughly 5 seconds, the MCB

shuts down and the I-Limit light will remain on. To reset

the I-Limit, turn the treadmill off at the power switch wait

about 30 seconds then turn the power back on.

Light- Indicates the control PWM

from the PCB is present. It will blink at

the control frequency used by the PCB when the PCB

commands speed. If the control signal should exceed 95

percent duty cycle, the PWM light shuts off and sets the

MCB to a safe shutdown mode. In the event this should

occur, the power to the treadmill should be removed, the

cabling checked for shorts and the PCB replaced. If this

problem persists, replace the MCB.

MOTOR

I-limit

PWM

MCB LED Indication

Note:

the incline is

being

commanded up

Note:

the incline is

being

commanded

down

Note:

The speed

sensor present

from the MCB to

the PCB

Light- Indicates the PCB is commanding the

incline motor to move up. If the User is

commanding the incline to increase and this light is not lit,

check cabling, verify proper PCB operation and replace it if

either is defective. If the problem persists, replace the MCB.

If the light is lit but the incline is not moving, check and verify

incline motor and its connection to the board; check fuse F4.

If this problem persists replace MCB.

Light- Indicates the PCB is commanding the incline motor

to move down. If the User is commanding the incline to

decrease and this light is not lit, check cabling, verify proper

PCB operation and replace it if either is defective. If the

problem persists, replace the MCB. If the light is lit but the

incline is not moving, check and verify incline motor and its

connection to the board; check fuse F4. If this problem

persists replace MCB.

SPD_SENSR

Light- Indicates the MCB from the speed senson is

present. It will blink at the speed sensor reaction to magnet

when the PCB can check the speed sensor and MOTOR

whether to damage. If the MOTOR to run SPD_SENSR light

is not lit, Please check the speed sensor whether bad or

speed sensor wire not to touch the P1of the MCB .

DOWN

MCB LED Indication

Note:

MOTOR short

circuit of the

MCB bad

MTR_SHRT

Light- Indicates the MOTOR short circuit, If the running belt

not running at the MTR_SHRT LED light, express the MOTOR

short circuit of the MCB bad.

MCB LED-AIDED TROUBLESHOOTING CHART

NO. PROBLEM/RESULT CORRECTIVE ACTION

No operation of MCB or PCB Verify connections, power switch, circuit

breaker and fuse

No operation of MCB or PCB Check fuse F1

PCB will not power up Replace MCB or 6-pin console cable

PCB will power up but the MCB

will not operate

Verify adequate line voltage. If line voltage is

adequate, MCB is damaged and needs to be

returned to manufacturer.

Verify connections to motor and the motor

itself. If the motor and its connections are

good, the MCB should be replace. Return

MCB to manufacture with information on

location. Power level, how it was used when

failure occurred etc.

Will not operate the motor

The motor can be verified by disconnection

the motor; connecting a volt-ohm meter(set to

VCD) to the motor leads; and spinning the

tread and observing a voltage. If no voltage,

Bad motor.

Will not operate the motor

A 5-second current limit time-out has occurred.

Resets console or cycle power to correct.

Check treadmill for excessive wear or

mechanical defects. If problem persists, return

MCB.

MCB in current limit mode

The MCB is experiencing a discontinuous over

current events. Check for mechanical wear

and/or defective motor. If on mechanical wear

and motor good, replace MCB and return

defective MCB to manufacturer.

Will not operate the motor

Check and verify the P3 and P4 cables are

good, replace the PCB. If the problem

persists, replace the MCB.

Incline all the way move up Please replacement the MCB

Incline does not move Verify connections to the P3 & incline motor. If

the connections look good, check F4.

Incline all the way move down Please replacement the MCB

SECTION 4

TROUBLESHOOTINGS

No display on console

Possible causes:

1. Breaker is damaged.

2. ON/OFF switch is damaged.

3. MCB is damaged.

4. 6-pin console cable is damaged.

5. PCB is damaged.

Fix:

1. ( refer to “MCB LED layout & indication”……SECTION 6)

Verify if LED 220vAC(AC) is lit. If this LED is lit, go to step 2.

If LED 220vAC(AC) is not lit, verify the following:

 Inspect the circuit breaker to see

if it has tripped off.

( If it is tripped off….like diagram B,

reset the breaker. And check which

part is short-circuited. Then replace

the short-circuited part.)

2. The switch is turned to the "ON" position.

( If the switch light isn't lit, replace the switch.)

 Verify wire connection AC1 & AC2 on the MCB.

( refer to “wiring diagram”…….page 4-3 )

 Verify the ON/OFF switch, breaker & socket wires are connected.

3. Verify if LED +V_CON & +18v is lit. If one is not lit, replace MCB.

Replace console cable.

5. Replace PCB.

A B

Running speed is not stable

Possible causes:

1. AC power voltage is too low.

2. Tension of poly belt or running belt is too loose.

3. Poor adjustment of MCB.

4. MCB is damaged.

5. Motor is damaged.

Fix:

1. Check the power voltage by using voltage-meter to see if it is within

230V±15%.

 If the power voltage isn't within the range, look for a qualified

electrician for help.

2. Open the motor cover, if the belt has stretched and is slipping across the

rollers when running.

 Adjust the belt tension.

3. Remove the motor cover and run the

machine at low speed, then adjust the R42

of MCB the variable resistance.

 If it hasn't been improved, replace new

MCB.

4. Replace new motor.

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Johnson T8000 User manual

Brand: Johnson

Model: T8000

Category: Treadmills

Type: User manual

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Johnson T8000 User manual

Johnson T8000 User manual

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