Yamaha i88x Service Manual page 11

4. DM Circuit Board and DMSUB Circuit Board
(Time required:about 9 min.)
4-1. Remove the top cover. (See procedure 1.)
4-2. Remove the front panel assembly. (See procedure 3.)
4-3. Remove the eight (8) knobs marked [330].
(Fig.5, Fig.6)
4-4. Remove the two (2) cap screws marked [F40]. The front
panel can then be removed. (Fig.5)
* The front panel comes off if it tilts the upper part for-
ward.
4-5. Remove the seven (7) hexagonal nuts marked [A].
(Fig.7)
4-6. Remove the four (4) screws marked [F60]. (Fig.7)
4-7. Remove the two (2) screws marked [F60]. (Fig.8)
4-8. Pull the DM circuit board back and remove the DM
and DMSUB circuit boards.
[40]:
[F40]
[30]
[30]:
[F40]: Cap Screw 3.0X8 MFZN2BL (WA260800)
[330]:
(Fig. 6)
[40]
Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
Front Panel
Cap Screw 3.0X8 MFZN2BL (WA260800)
Knob K-BC (V4765800)
Tool
TX000021
(Fig. 4)
[330]
(Fig. 5)
i88X
[F40]
[30]
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