Exchange The Main Board - Roland VS-1680 Service Notes

VS-1680

EXCHANGE THE MAIN BOARD

1.Remove the knobs from the front panel: (a), (b) (13 slider
knobs and 10 round knobs).
Remove the top panel A(c): slide in a flat blade tool e.g. tip
of a screwdriver below the top panel and then carefully lift
the panel.
Notes: 1) Main board cannot be removed before the top
panel A(c) is removed.
2) Once the panel is removed, keep adhesive
surfaces away from dusts.
3) Replacement top panel A(c) available from
Roland service representative.
2.Turn over the body (d) and remove the bottom cover (f) by
removing 16 screws.
3.Remove CN2 and CN3 and MIDI board by removing
corresponding 4 screws.
4.Remove screws: 2 from main board, 6 from rear panel, 2 (g
and h) from switching regulator. Remove the rear panel (i)
together with the switching regulator, fan, main board,
digital I/O board. To do this, slightly shift the main board to
disengage it from notches (marked * in the figure).
5.Remove screws (j) and (l) and then the air guide (k) and
MIDI board (m) from the rear panel.
6.Remove screws (n), (o) and (p) and then main board (q)
from the rear panel (r).
7.Install the repaired or new main board by first engage it
with notches (*). Repeat steps 1 to 6 in the reverse order.
After attaching the top panel A(c), evenly depress the
surface using soft cloth for tight adhesion.
14
Sep, 1998