CIRCLE FITNESS M-7 SERIES E TYPE User manual

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 2 of 25
2
Table of Contents
1. Error Signal Check Steps And Solutions
1.1 Error Signal:『LS』----- Page 3~7
1.2 Error Signal:『E1』----- Page 8
1.3 Error Signal:『E2』----- Page 8~9
2. Information For Components
2.1. Interface PCB -----Page 10~15
2.2. Console Wire -----Page 16
2.3. Speed Sensor -----Page 17
2.4. Inverter -----Page 18
2.5. Incline Motor -----Page 18~19
2.6. Membrane Key -----Page 20
3. Engineering Mode
3.1. Engineering Mode 1: Factory Settings ----- Page 21~22
3.2. Engineering Mode 2: Used Information Management ----- Page 22
3.3. Engineering Mode 3: Real Speed and Incline Parameter ----- Page 22
4. Other Information
4.1. Real Speed Do Not To Fit In With Display Speed ----- Page 23
4.2. No Any Display on Console (No Power) ----- Page 23
4.3. Abnormal Display on Console ----- Page 24
4.4. Can Not Decrease Speed ----- Page 24
4.5. Membrane Key Lose Function ----- Page 25

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 3 of 25
3
1. Error Signal Check Steps And Solutions
1.1. 【LS】:Can not receive signal from speed sensor over 8 seconds while workout, all
windows display will off, all output will stop, and shows 【LS】on TIME window.
※If this is a all new product that just finished assemble, there are more possibly in assemble
problems, maybe connect wire not well or wire damaged while assemble.
1.1.1. Steps illustrate:
Step
illustrate
Auxiliary Photo
1
Shows【LS】on TIME window.
2
OFF the AC power source and wait 10
seconds then ON the AC power.
3
Press START.
4
Do the running belt moved?
A:Moved then shows【LS】:Execute step 5~8
B:Did not move then shows【LS】:Execute
step 9~12
C:Moved but no any error signal at all:
Execute step 13~14
？
OFF
ON

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 4 of 25
4
Step
illustrate
Auxiliary Photo
5
Press STOP then press START and FAST
simultaneously immediately, to leave you
hand from keys till dot-matrix window shows
WELCOME.
6
LED display windows will do the scan mode
after shows WELCOME.
After scan mode, to press ENTER till incline
window shows 『15』then press START to
begin calibrate mode.

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 5 of 25
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Step
illustrate
Auxiliary Photo
7
Do it can be calibrating normally or shows
LS on TIME window?
If calibrate normally and return to idle mode,
please check the SPEED parameter on
CALORIES window when calibrate speed at
max speed 20km/h (±0.1).
In normal condition, the SPEED parameter
shall be between 340~350.
8
If calibrate abnormal, open motor cover and
check speed sensor connected well.
If speed sensor connected well, please
replace the sensor and check again.
Refer to 2.3『Speed Sensor』
If still shows error signal, have to check the
console wire, damage or connect terminal
problem.
If console wire check ok, please replace the
console wire then back to execute step 2,
check the error signal disappear or not.
Refer to 2.2『Console Wire』
If still shows error signal after replace the
console wire, please replace the console
PCB then back to execute step 2, check the
error signal disappear or not.
Calibrate abnormal, show 【LS】
Calibrate normal, return to idle mode

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 6 of 25
6
Step
illustrate
Auxiliary Photo
9
Open the motor cover then ON the AC power,
press START to begin and check the pilot
lamp on interface PCB.
1. Is the LED7 light up before shows 【LS】?
2. Is the LED6 flash before shows【LS】?
LED7 or LED6 not light or flash: Execute step
12~13.
LED7 light up and LED6 flash: Execute step
10~11.
10
If LED6 & LED7 normal, have to check the
inverter first, if inverter check normal, please
replace the interface PCB then back to
execute step 2.
Refer to 2.4『Inverter』
11
Check the console wire, damage or connect
terminal problem.
After check or reconnect or replace the wire,
back to execute step 2.
Refer to 2.2『Console Wire』
12
After check or reconnect or replace the wire
but still shows error signal, please replace
the console PCB then back to execute step
2.
LED7
LED6

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 7 of 25
7
Step
illustrate
Auxiliary Photo
13
If all function are normal and no error signal
after reset power, it maybe cause by power
core, maybe power core connect not well,
please check the power core.
14
If all function are normal and no error signal
after reset power, maybe the loading is too
heavy and inverter to start the over current
protect mode. If loading is too heavy the
motor noise will more louder over 12km/h
and running belt speed will decreased or
slippery while loading. Please maintenance
or replace the running belt and running deck.
On the AC power and check the fan where on
the inverter operate normal, otherwise the
inverter will over heating and to start protect.
Refer to 2.4『Inverter』

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 8 of 25
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1.2. 【E1】:When memory device damaged or read or write had program, all window display
will be off and all output will be stop and shows【E1】on TIME window, shows【EEPROM
ERROR】on dot-matrix window.
1.2.1. Solution: Replace the console PCB.
1.3. 【E2】:IF incline had some problems when initial, incline can not reach the right position,
will shows 『ELEVATION ERROR PRESS STOP TO BYPASS』on dot-matrix window, press
STOP to bypass the signal but incline function can not be use, if incline had some
problems when during workout, the INCLINE window will shows 【E2】but other function
are normal to use.
※If this is a all new product that just finished assemble, there are more possibly in
assemble problems, maybe connect wire not well or wire damaged while assemble.
1.3.1. Steps illustrate:
Step
illustrate
Auxiliary Photo
1
Open the motor cover then switch OFF the
AC power source and wait 10 seconds then
ON the AC power.
2
Check the pilot lamps LED4 & LED5 on
interface PCB before shows【E2】.
The LED4 or LED5 light up before show E2?
Yes: Next step.
No: Check console wire is connected well.
Refer to:
2.1『Interface PCB』
2.2『Console Wire』
OFF
ON

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 9 of 25
9
Step
illustrate
Auxiliary Photo
5
Check the console wire, damage or connect
terminal problem.
After check or reconnect or replace the wire,
back to execute step 1 to check.
Refer to 2.2『Console Wire』
6
After check or reconnect or replace the wire
but still shows error signal, please replace
the incline motor or internal variable
resistor(VR) then back to execute step 1 to
check.
Refer to 2.5『Incline Motor』
7
After replace the incline motor or internal
variable resistor but still shows error signal,
please replace the console PCB then back to
execute step 1 to check.

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 10 of 25
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2. Information For Components
2.1. Interface PCB:
2.1.1. Appearance and connector description:
2.1.2. Description of pilot lamps on interface PCB:
LED2: Pilot lamp of console power, normal full light up when power ON.
LED3: Pilot lamp of decrease speed, flash when decreasing speed, switch off while speed
reached.
LED4: Pilot lamp of incline UP, light up when increase grade, switch of while grade reached.
LED5: Pilot lamp of incline DOWN, light up when decrease grade, switch of while grade
reached.
LED6: Pilot lamp of increase speed, flash when increasing speed, switch off while speed
reached.
LED7: Pilot lamp of enable motor, light up while work, switch off while stop.
Console wire
Speed sensor
wire
Inverter control wire
Incline VR wire
AC power
input
90~240Vac
Incline UP
Incline COM
Incline DOWN
Inverter AC power
LED2
LED7
LED6
LED3
LED4
LED5
U5
U2
U1

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 11 of 25
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2.1.3. Interface PCB function check:
2.1.3.1. Check incline function
Step
illustrate
Auxiliary Photo
1
OFF the AC power, to pull out the console
wire and incline motor power wires, then ON
the AC power, measure the terminal UP &
COM or DOWN & COM by multi-meter, there
shall be not have AC voltage(100~240V) at
normal condition.
ON the AC power

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 12 of 25
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Step
illustrate
Auxiliary Photo
2
Connect back the console wire, pull out the
incline motor power wires only, press start to
quick start, short the console wire PINs for
incline UP by metalwork, to measure
terminals UP & COM by multi-meter, it shall
be have AC voltage at normal condition and
pilot lamp LED4 will light up.
3
Connect back the console wire, pull out the
incline motor power wires only, press start to
quick start, short the console wire PINs for
incline DOWN by metalwork, to measure
terminals DOWN & COM by multi-meter, it
shall be have AC voltage at normal condition
and pilot lamp LED5 will light up.
Short the black and orange wire PINs
(PIN 1 and PIN 4)
Short the black and yellow wire PINs
(PIN 1 and PIN 5)

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 13 of 25
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2.1.3.2. Check speed output device
Step
illustrate
Auxiliary Photo
1
Switch ON the AC power, short the enable
motor component by metalwork and keep
on.
Short the motor fast component by
metalwork, then metalwork leave the motor
fast component (open), to do 5~10 times
circulates.(shortopenshortopen…)
Motor shall start to rotate and increase
speed, if you to do more circulate it will be
faster.
If to operate with console but shows LS, but
use this kind of way to operate the motor
and motor worked, it is mean that the
interface PCB is damaged.
Short the enable motor component (U5) by
metalwork
Short the motor fast component(U2) by
metalwork
Metalwork leave the motor fast component
(U2)
Motor shall start to rotate and increase
speed

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 14 of 25
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Step
illustrate
Auxiliary Photo
2
To continue, do not move out and keep on
short the enable motor component.(Motor in
the rotating condition)
Short the motor slow component by
metalwork, then metalwork leave the motor
fast component (open), to do 5~10 times
circulates.(shortopenshortopen…)
Motor shall decrease speed, if you to do
more circulate it will be slower.
If to operate with console but can not
decrease the speed, but use this kind of way
to decrease the speed and it did work, it is
mean that the interface PCB is damaged.
Do not move out and keep on short the
enable motor component
Motor shall decrease speed
Short the motor slow component(U1) by
metalwork
Metalwork leave the motor fast component
(U1)

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 15 of 25
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2.1.3.3. Check power supply for console
Step
illustrate
Auxiliary Photo
1
Switch ON the AC power, check the pilot
lamp, it shall be full light up in the normal
condition.
It shall not flash or slight light up.
2
To pull out the power supply terminal and
measure the voltage by multi-meter.
It shall be have DC voltage 11~13V.

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 16 of 25
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2.2. Console wire check:
2.2.1. Check all connect certainty and outward completely.
Step
illustrate
Auxiliary Photo
1
To pull out the console wire connector plug.
2
Check connector internal PINs, it shall not be
crooked.
3
Check connector internal PINs, it shall not be
draw back.
4
Check the wires outward; it shall not be
crush injuries or breakage.

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 17 of 25
17
2.3. Speed sensor check:
2.3.1. Check all connect certainty.
Step
illustrate
Auxiliary Photo
1
Check the connector connection with
interface PCB certainly.
2
Check connector internal PINs, it shall not be
draw back.
2.3.2. Check outward completely and function normal.
Step
illustrate
Auxiliary Photo
1
To check the wire, it shall not be crush
injuries or breakage.
2
To turn around the front roller till the magnet
close to the speed sensor, then measure the
wire PINs by multi-meter.
It shall be have low resistance in the normal
condition.(short condition)
3
To turn around the front roller till the magnet
leave away from the speed sensor, then
measure the wire PINs by multi-meter.
It shall be have infinity resistance in the
normal condition.(open condition)

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 18 of 25
18
2.4. Inverter check:
Step
illustrate
Auxiliary Photo
1
Switch ON the AC power and to check the
fan where on the inverter.
It shall be operate when power ON and stop
when power OFF.
2
To execute the 2.1.3.2 step 1 & 2, it shall be
operate normally.
2.5. Incline motor check:
Step
illustrate
Auxiliary Photo
1
Switch OFF the AC power, to pull out the
incline motor power wires. (red/white/black
wire)
2
To pull out the inverter power source
terminal and connect the incline motor wires
white one and red one to inverter power
source terminal.
Switch ON the AC power, the incline motor
shall be operate in the normal condition.

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 19 of 25
19
Step
illustrate
Auxiliary Photo
3
To continue, switch OFF the AC power, to
connect the incline motor wires white one
and black one to inverter power source
terminal.
Switch ON the AC power, the incline motor
shall be operate in the normal condition.
4
Open the incline motor cover, pull out the
connect wires (red/white/black wire) and to
take apart the internal VR.
5
To turning the VR and measure the
resistance(white and black wire connect
terminals), the resistance shall be change
between range 0~10kΩ when turning the VR.
The lowest incline position resistance about
0.83kΩ, the highest incline position about
6.72 kΩ
If you want to replace the incline motor or
VR, you have to connect the new incline
motor all wires to interface PCB and switch
ON the power for correction before fix on the
treadmill. Or to adjust the resistance of VR to
the lowest position value.
Otherwise, it will be jam or break away.

Document: Service Manual
Description: Treadmill
Model: M7 E / M7L E
Page: 20 of 25
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2.6. Membrane key
Step
illustrate
Auxiliary Photo
1.
To pull out the connection from console
PCB.
2.
If mull-function when you are using, please
find the PINs definition for keys terminal as
below.
To measure the PINs by multi-meter then
press the mull-function key and keep on, it
shall be have low resistance in the normal
condition(short condition), if got infinity
resistance, the membrane key is damaged.
For example: SPEED UP key mull-function, to
measure the Pin 4 and Pin 8.
PIN
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P1
INCLINE 9
SPEED 8
INCLINE↑
P2
INCLINE 6
SPEED 6
SELECT
P3
INCLINE 3
SPEED 4
SPEED↓
START
P4
INCLINE 0
SPEED 2
SPEED↑
ENTER
P5
INCLINE12
SPEED 10
INCLINE↓
P6
INCLINE 9
INCLINE 6
INCLINE 3
INCLINE 0
INCLINE12
P7
SPEED 8
SPEED 6
SPEED 4
SPEED 2
SPEED 10
P8
INCLINE↑
SPEED↓
SPEED↑
INCLINE↓
P9
SELECT
START
ENTER
P10
P1
P10