Shimano Ultegra ST-6870 Dealer's Manual page 57

ADJUSTMENT
Adjustment of the front derailleur
Top position electrical adjustment
Set the rear derailleur to the largest
sprocket.
1
Press the button at the junction (A) until
the red LED illuminates in order to
switch to adjustment mode.
2
Operate the shifting switch (X) or the
shifting switch (Y).
3
To be continued on next page
(A) (B)
(C)
(D)
Button (push)
Turned off
(red)
(E)
57
(A)
Largest sprocket
(B)
Largest chainring
(C)
LED window for button
(D)
Junction (A)
CAUTION
Note that if you keep pressing the button
after the red LED has illuminated, protection
recovery operation will begin.
(E)
Shifting switch (X)
(F)
Shifting switch (Y)
The adjustable range is 25 steps.
(12 steps inward and 12 steps outward from
(F)
the initial position)