Roland VersaUV LEJ-640 Service Notes page 144

Disconnect the Cables from the following boards and remove
2
the boards together
with the Stays.
Step Drive Board
Servo Board
Main Board
Head Board
UV Junction Board
TU Junction Board
Disconnect all the cables which are connected to the SW
3
Power Supply.
Remove the 4 screws as shown in the fi gure and replace the
4
new SW Power Supply (27V).
Connect all the Cables.
5
Step
Drive
Board
Main Board
Servo Board
3-70
TU Junction Board
Head Board
UV Junction
Board