Yamaha EMX5000-12 Service Manual page 17

4. DSP Circuit Board
(Time required: about 12 minutes)
4-1. Remove the panel assembly. (See Procedure 1.)
4-2. Remove the four (4) DSP circuit board fixing screws
marked [P220], disconnect the card wire connected
to the connector. The DSP circuit board can then be
removed. (Fig. 3)
5. MAS Circuit Board
(Time required: about 30 minutes)
5-1. Remove the panel assembly. (See Procedure 1.)
5-2. Remove the DSP circuit board. (See Procedure 4.)
5-3. Disconnect the two (2) harnesses connected to the
connector assembly fixture marked [P240] on the
main shield plate and remove the six (6) screws
marked [B90]. The main shield plate can then be
removed. (Fig. 3)
5-4. Remove the two (2) LAMP holder fixing screws
marked [P70a], two (2) pin connector fixing screws
marked [P70b], twenty-two (22) horn connector fixing
hexagonal nuts, knobs (thirty-three (33) big ones, two
(29 small ones and eight (8) fader knobs) and eleven
(11) hexagon socket head screws marked [P60a] and
three (3) hexagon socket head screws marked
[P38a]. The MAS circuit board can then be removed.
(Fig. 4)
6. IN8/IN16 Circuit Board: CH1-8 / EMX5000-12, CH9-
18 / EMX5000-20 (Time required: about 40 minutes)
6-1. Remove the panel assembly. (See Procedure 1.)
6-2. Remove the DSP circuit board. (See Procedure 4.)
6-3. Remove the main shield plate. (See Procedure 5-3.)
6-4. Remove the sixteen (16) cannon connector fixing
screws marked [P70c], sixteen (16) horn connector
fixing hexagonal nuts, knobs (eighty (80) small ones
and eight (8) fader knobs) and nine (9) hexagon
socket head screws marked [P60b] and three (3)
hexagon socket head screws marked [P38b]. The
IN8/IN16 circuit board can then be removed. (Fig. 4)
7. IN8 Circuit Board: CH1-9 / EMX5000-20
(Time required: about 35 minutes)
7-1. Remove the panel assembly. (See Procedure 1.)
7-2. Remove the sixteen (16) cannon connector fixing
screws marked [P70d], sixteen (16) horn connector
fixing hexagonal nuts, knobs (eighty (80) small ones
and eight (8) fader knobs) and nine (9) hexagon
socket head screws marked [60c] and three (3)
hexagon socket head screws marked [P38c]. The
IN8 circuit board can then be removed. (Fig. 4)
EMX5000-12/20
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