This thread is now a "sticky thread" on the Technical Repair forum.

Since this is a frequent topic, this thread is a collection of posts and links on threadmill controllers, questions and fixes.

If you are making enquiries on repairing a threadmill controller, please start a new thread.
If you have new information to add, for example, photos of a control board that is not posted here, please start a new thread and we will append the new information to this thread.

Particularly, we are in search of a photo of MC-2100 REV 4 control board and any older versions not shown here.

Many of the summary posts are taken from this Technical Repair thread:
https://forum.allaboutcircuits.com/threads/mc2100-treadmill-motor-control-circuit.100678/

There are other threads on adding external speed control and on data communications which might be of interest to others. Links to these threads will be added later.

 

MC2100 reverse engineered circuit diagram

Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-2#post-1267375 (post #39)






MC-2100 REV B
Reference: https://forum.allaboutcircuits.com/threads/mc2100-rev-b-issues-treadmill-main-board.175114/





MC-2100 REV B





MC-2100 REV 5






MC-2100 REV B

HD2 connector
(top to bottom, see photo below)
8 - BROWN = Ground
7 - WHITE/BROWN = no connection
6 - GREEN = Incline Down 5 VDC
5 - WHITE/BLUE = Incline Up 5 VDC
4 - BLUE = PWM 0-5 VDC
3 - WHITE/GREEN = Tach. pulsing 0-5 VDC
2 - ORANGE = 8-12 VDC
1 - WHITE/ORANGE = Ground

 

MC2100ELS-18W Control Board

Reference: https://forum.allaboutcircuits.com/...ill-motor-control-circuit.100678/#post-912013 (post #9)




MC2100ELS-18W
Reference: https://forum.allaboutcircuits.com/...r-control-circuit.100678/page-10#post-1584218 (post #185)




MC2100ELS-18W
Reference: https://forum.allaboutcircuits.com/...r-control-circuit.100678/page-17#post-1752924 (post #326)







MC2100ELS-18W
Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-9#post-1552898 (post #176)
Reverse Engineered drawings: https://forum.allaboutcircuits.com/attachments/mc2100els-18w_rev_eng_1-pdf.217867/

Reference: https://forum.allaboutcircuits.com/...r-control-circuit.100678/page-13#post-1663986 (post #245)
Corrected drawings: https://forum.allaboutcircuits.com/attachments/mc2100els-18w_rev_eng_2-pdf.247369/
Corrected XCEL components list: https://forum.allaboutcircuits.com/attachments/mc2100els_18w-component-list-ver-3-ro-xls.247370/









Details of MC2100ELS-18W Repair
Error code: LED flashes 8 times
Contributions by AAC members Mach4 and JonnyBeGood
Reference: https://forum.allaboutcircuits.com/...r-control-circuit.100678/page-12#post-1645501 (post #239)
Reference: https://forum.allaboutcircuits.com/...r-control-circuit.100678/page-13#post-1663986 (post #245)

 

MC2100E REV A
Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-4#post-1457698 (post #64)

 

MC2100E REV C
Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-2#post-1077670 (post #24)







Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-4#post-1439622 (post #61)










MC2100E REV C
Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-4#post-1440515 (post #62)




MC2100E REV C
Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-7#post-1500648 (post #127)









MC2100E REV C
Reference: https://forum.allaboutcircuits.com/...r-control-circuit.100678/page-16#post-1729939 (post #306)

 

MC2100E REV D
Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-6#post-1491070 (post #102)




MC2100E REV D ICON 2007
Reference: https://www.electro-tech-online.com/attachments/img_20140219_185419-jpg.84415/

 

MC2100LS-30 Control Board

Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-2#post-1115967 (post #29)




MC2100LS-30 Control Board Repair
R46 = 2 Ω 2 W
Reference: https://forum.allaboutcircuits.com/...r-control-circuit.100678/page-13#post-1702389 (post #253)










MC2100LS-30 NordicTrack Elite 3700
Reference: https://forum.allaboutcircuits.com/...3700-mc2100ls-30-rev-treadmill-repair.204761/ (post #1)

 

place holder #8

MC-2100 REV B

 

MC2100ELS-50W

Reference: https://forum.allaboutcircuits.com/threads/mc2100els-50w-v1-kindly-help.195450/ (post #1)

 

ICON MC5100DTS-50W - Nordic Track X9i

Reference: https://forum.allaboutcircuits.com/...or-control-circuit.100678/page-3#post-1329375 (post #44)




MC5100EDS-50W - Nordictrack X7i

Reference: https://forum.allaboutcircuits.com/...7i-mother-control-board-mc5100eds-50w.209147/

 

DK30-110
Reference: https://forum.allaboutcircuits.com/...controller-speed-control.209008/#post-2012785 (post #20)




DK30-220






Similar control boards

DK30-110
DK30-220
K590-163A
DCMD57
DCMD66
DCMD67
PF-905
PF-906


Reference: https://forum.allaboutcircuits.com/threads/test-board-for-treadmill-dcmdx-2.184554/ (post #7)

 

MC-02 Controller Board





Reference: https://forum.allaboutcircuits.com/threads/mc-02-treadmill-controller.209067/

 

MC-60 Controller Board



Reference: https://webajm.com/2015/03/12/treadmill-repair-mc60-controller/


Reference: https://forum.allaboutcircuits.com/...0-treadmill-motor-controller-schematic.77083/

Other relevant threads: https://forum.allaboutcircuits.com/threads/treadmill-motor-speed-controller-problems.18895/

Scehematics Revised:



Reference: https://forum.allaboutcircuits.com/...motor-controller-schematic.77083/#post-544791 (post #13)





MC-60 Motor Controller Functional Description

 

place holder #14

 

place holder #15

 

place holder #16