Main Board Replacing Procedure - Roland Vs-880EX Service Notes

VS-880EX
HARD DISK DRIVE UNIT
One IDE-type hard disk (2.5 inch size) can be installed inside the VS-
880EX, and up to 7 disk drives can be connected to the SCSI connector.
Checking the performance of the optional IDE drive using the
demonstration song.
The VS-880EX demonstration song also can be used to check the
performance of the IDE type hard disk drive (2.5 inch type) that can be
installed into the VS-880EX using as an HDP88-DL.
First, install the 2.5 inch type IDE hard drive that you want to check the
performance into the VS-880EX with HDP88-DL. Then recover the
demonstration song to the VS-880EX.
After you finish the recover operation, play back the demonstration
song.
If the following condition occurs, the hard disk drive in the VS-880EX
can not be used for the VS-880EX.
1. VS-880EX will not be able to playback the demonstration song.
2. A message "Disk Too Slow !" will be displayed.
3. MIDI/DISK indicator will always light while playing back the
demonstration song.
If you can playback the demonstration song on the VS-880EX without
occurring the above condition, you will be able to use that hard disk
drive installed into the VS-880EX. However, you may get a message
of "Disk Too Slow !" in some cases, and correct playback will not be
possible concerning the condition of the speed of writing to or reading
from the disk drive, number of playback tracks at a time, ...etc.
RJA only checks the detailed performance of the hard disk drive that
has the playing back performance of the demonstration song of the
VS-880EX normally. Contact RJA staffs, then send the hard disk drive
with its specification sheet to RJA.
10
(SER. Label describes as follows.)
2100 ←  Capacity
9802-10501
↑ ↑ ↑
  
SER. NO.
 
not used

Feb. 98

MAIN BOARD REPLACING PROCEDURE

MAIN BOARD replacing procedure
1. Remove the knobs from the front panel:(a),(b)
(9 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 dust.
3) Top panel A(c) for replacement is available from Roland service
representative.
2. Turn over the body (d) and remove the bottom cover (e) by removing 17
screws.
3. Remove CN2 from power supply unit, and remove CN3, CN6, CN4, CN9
and CN1 from main board.
4. Remove screws: 6 from main board (f), 2 from rear panel (g).
Remove the rear panel together with main board and digital I/O board.(h)
To do this, slightly shift the main board to disengage it from notches
(marked * in the figure).
5. Remove screws (i),(j) and then main board(l) from rear panel(k).
6. Install the repaired or new main board by fittng the notches (*).
Repeat steps 1 to 5 in the reverse order.
After attaching the top panel A(c), evenly depress the surface using soft
cloth for tight adhesion.
Sep, 1998