Yamaha 01x Service Manual page 16

O1X
c. Fix the contact to the circuit board with 2 screws marked
[60]. (Fig. 2-4)
d. Fix the contact with manual soldering at 2 points. (Fig. 2-4)
Use special care so that the contact is fixed securely.
[60]: Bind Head Tapping Screw-P 2.0 x 6
4. AN Circuit Board
(Time required : About 5 minutes.)
4-1. Pull out the nine (9) knobs and the nine (9) VR knob
bushings from the control panel. (Fig. 1)
4-2. Remove the side panel L and R. (See procedure 1)
4-3. Remove the bottom cover. (See procedure 2)
4-4. Remove the DM circuit board and MLN2 circuit board.
(See procedure 3)
4-5. Remove the three (3) screws marked [102]. The DM
shield plate can then be removed. (Fig. 2)
4-6. Remove the three (3) screws marked [63]. The three (3)
contacts can then be removed. (Fig. 3)
4-7. Remove the ten (10) screws marked [62]. The AN circuit
board can then be removed. (Fig. 3)
* When installing the AN circuit board, tighten the screws
"1 and 2" of those marked [62] of the rear panel first.
4-8. Pull out the nine (9) knob spacers from the AN circuit
board.
5. MF Circuit Board
(Time required : About 3 min.)
5-1. Pull out the nine (9) slider knobs from the control panel.
(Fig. 1)
5-2. Remove the side panel L and R. (See procedure 1)
5-3. Remove the bottom cover. (See procedure 2)
5-4. Remove the nine (9) screws marked [74]. The MF circuit
board can then be removed. (Fig. 4)
* When installing the MF circuit board, tighten the screws
"1 and 2" of those marked [74] of the bottom cover first.
* After replacing the circuit board or fader of MF, please
calibrate the faders. (See page 58.)
16
[60]
MFZN2BL (VG893800)
(Fig. 2-4)