Shimano SM-EC79 User manual

English 3 – 24
Dutch 25 – 46
German 47 – 68
French 69 – 90
Spanish 91 – 112
Japanese 113 – 134
Italian 135 – 156
Portuguese 157 – 178
Danish 179 – 200
Swedish 201 – 222
Greek 223 – 244
Finnish 245 – 266
Chinese 267 – 288

3
Names of parts
Checker unit
Electric cable checker
Shifting switch checker
(1) Power indicator (orange)
(2) ENTER switch
(3) Judgment indicator
(green)
(4) Judgment indicator (red)
(5) Shifting switch direction
change mode
(6) Checker mode
(7) Mode select switch
(8) Derailleur connector
(9) Lever connector
(10) Cable receptor
Power supply
continuity check
indicator (green) Connect to
junction A
Switch unit
(1) (5)
(6)
(7)
(10)
(9)
(8)
(2)
(3)
(4)
SM-EC79
INDEX
Gear shifting operation • • • • • • • • • • • • • •
4
Installation • • • • • • • • • • • • • • • • • • • • • • • • • • •
5
Adjustment • • • • • • • • • • • • • • • • • • • • • • • • • • •
6
Other lever operation functions • • • • • •
10
Maintenance
• • • • • • • • • • • • • • • • • • • • • • • • •
11
Gear shifting operation • • • • • • • • • • • • • •
4
Installation • • • • • • • • • • • • • • • • • • • • • • • • • • •
5
Adjustment • • • • • • • • • • • • • • • • • • • • • • • • • • •
6
Other lever operation functions • • • • • •
10
Maintenance
• • • • • • • • • • • • • • • • • • • • • • • • •
11
English

Problem location procedure using the checker
4
Using the checker
The two functions of this checker are to
determine locations of problems and to
change the switch directions.
No problem
Problem
NOTE:
This checker may not be possible to
determine the locations of some types of
problem.
Replace the
derailleur.
Replace the
SM-EW79A.
Replace the
ST-7970 lever.
Replace the
electric cable.
Problem with
derailleur operation
Derailleur (front
derailleur or rear
derailleur) does
not operate
Problem with input
(SM-EW79A/ST-7970
lever) operation
Check the
SM-EW79A.
Check the continuity
in the main electric
cable.

5
Problem with front derailleur or rear derailleur continuity
1. First remove the battery from the battery bracket, and then insert the battery into
the checker. The power indicator will illuminate or flash. (If it illuminates, the battery
can be used; if it flashes, recharge the battery.)
* If there is no response from the checker when the battery is inserted into it, there
may be a problem with the battery.
2. Move the mode select switch to the checker
mode position.
Illuminated
Flashing
Not illuminated