Power Supply Unit - Yamaha CS1D Service Manual

43. CS DRL Circuit Board
43-1 Remove the CANNON assembly. (See Procedure 42.)
43-2 Remove the two (2) screws marked [C50]. The CS DRL
circuit board can then be removed. (Fig. 13)
44. CS MT1, CS MT2, CS MT3 Circuit Board
44-1 Remove the rear panel (A), (B) and (C). (See Procedure 38.)
44-2 Remove the two (2) screws marked [140]. The CS MT1
circuit board can then be removed. (Fig. 13)
44-3 Remove the three (3) screws marked [40]. The CS MT2
circuit board can then be removed. (Fig. 13)
44-4 Remove the three (3) screws marked [80]. The CS MT3
circuit board can then be removed. (Fig. 13)
45. CARD Assembly (Rear Panel A)
45-1 Remove the rear panel (A). (See Procedure 38.)
45-2 Remove the following screws, each assembly can then be
removed. (Fig. 14)
Assembly
MIO-CARD
CIO-CARD
STI-CARD
AEI-CARD
STO-CARD
AD2-CARD
MO12-CARD
MO22-CARD
AD2-CARD Assembly
[ 660 ]x2
MO22-CARD Assembly
MO12-CARD Assembly
[ 640 ]x2
46.

Power Supply Unit

46-1 Remove the rear panel (B). (See Procedure 38.)
46-2 Remove the four (4) screws marked [806]. The Sub Panel
can then be removed. (Fig. 15)
46-3 Remove the Lower LCD escutcheon cover.
(See Procedure 31-1.)
46-4 Remove the FAN assembly 2. (See Procedure 39-3.)
46-5 Remove the five (5) screws marked [795]. The power
supply unit can then be removed.
Ref. No.
540 Bonding Head Screw 4.0x8 MFZN2BL (VS154500)
560 Bonding Head Screw 4.0x8 MFZN2BL (VS154500)
A Bonding Head Screw 4.0x8 MFZN2BL (VS154500)
B Bonding Head Screw 4.0x8 MFZN2BL (VS154500)
C Bonding Head Screw 4.0x8 MFZN2BL (VS154500)
626 Bonding Head Screw 4.0x8 MFZN2BL (VS154500)
640 Bonding Head Screw 4.0x8 MFZN2BL (VS154500)
660 Bonding Head Screw 4.0x8 MFZN2BL (VS154500)
AEI-CARD Assembly
[ C ]
[ C ]
[ 626 ]x2
STO-CARD Assembly
Fig. 14
Screw
CIO-CARD Assembly
[ A ]x2
[ 540 ]x8
[ B ]x2 [ 560 ]x4
STI-CARD Assembly
CS1D
QTY
8
4
2
2
4
2
2
2
MIO-CARD Assembly
27