Roland Advanced Jet AJ-1000 Service Notes page 142

Move the Belt Holder by hand to the position of the screw
13
hole for fixing the carriage.
Fix the Belt Holder with the Head Carriage with the
screws.
Tighten the Adjustment Screw to have tension on the
14
Belt.
In this case, do not tighten the Screw too hard.
Connect the Flexible Cable to the HEAD 2 and HEAD 3.
15
Fix the Encoder Scale and the Encoder Module if you
have removed them.
Turn on the Sub Power SW while pressing the Left, Right
16
and Down keys to enter the Service Mode.
Screw
Belt Holder
Adjustment Screw
[ ], [
MENU
SERVICE MENU
3-57
Flexible Cable
], [ ] + POWER ON
[MENU] key