Yamaha EMX3000 Service Manual page 16

EMX3000
7. Power transformer (Manhour requirement: 10 min.)
7-1. Remove the panel assembly and the bottom
assembly. (See Procedure 1.)
7-2. Remove the hexagonal bolt. The power transformer
can then be removed. (Fig. 3)
(See Fig.3 for drawing direction of wiring assembly.)
8. PWR2 2/3 Circuit Board (Manhour requirement:
15 min.)
8-1. Remove the panel assembly and the bottom
assembly. (See Procedure 1.)
8-2. Remove the five (5) special hexagonal nuts and one
(1) screw marked [R30] from the rear panel. The
PWR2 2/3 circuit board can then be remove. (Fig. 4)
9. PWR2 1/3 Circuit Board (Manhour requirement:
15 min.)
9-1. Remove the panel assembly and the bottom
assembly. (See Procedure 1.)
9-2. Remove the two (2) screws marked [R60], PSW
knob, PSW escussion and the 2 screws marked
[R20]. The PWR2 1/3 circuit board can then be
removed.
[R60]
16
[B130]
[B60]
[B50]
PSW1
[B60]
[B50]
[B130]
[B60]
DC fan
[B50]:Bind Head Screw SP 3.0 X 8 MFZN2Y (FG330290)
Fig.3
[B60]:Pan Head Screw SPK 3.0 X 12 MFZN2Y (VJ470900)
[B75]:Bind Head Tapping Screw-B 3.0 X 6 MFZN2BL (EP600230)
[B100]:Bind Head Tapping Screw-B 4.0 X 8 MFZN2BL (EG340190)
[B130]:Bind Head Tapping Screw-B 4.0 X 8 MFZN2BL (EG340190)
[R30]
Hexagonal nut
PWR2
PSW escussion
PWR2
[R20] PSW knob [R20]
Fig.4
[B130]
Power transformer
[B60]
[B60]
[B130]
DSP
PCB support
[B100]
2/3
1/3
[R20]:Bind Head Screw 3.0 X 8 MFZN2BL (VB659000)
[R30]:Bonding Screw-B 3.0 X 8 MFZN2BL (EG413300)
[R60]:Bind Head Tapping Screw-B 4.0 X 8 MFZN2BL (EG340190)
[B75]
PWR2 3/3