Ps16X Circuit Board - Yamaha MG 166CX-USB Service Manual

MG166CX-USB/MG166CX
3. PS16X Circuit Board (Time required: 18 min.)
3-1 Remove the top cover. (See procedure 1.)
3-2 Remove the MIX16X circuit board, DSP circuit board
and JACK16X circuit board. (See procedure 2.)
3-3 Remove the three (3) screws marked [190], three (3)
screws marked [200] and three (3) screws marked [220].
The inner chassis with heatsink assembly and USB as-
sembly (MG166CX-USB only) can be removed. (Fig. 4)
3-4 Disconnect the three (3) connectors.
3-5 Remove the four (4) screws marked [80] and screw marked
[70]. Then remove the heatsink assembly. (Fig. 5)
3-6 Remove the three (3) screws marked [40] and six (6)
screws marked [50] and separate the PS16X circuit
board from the heatsink. (Fig. 5)
[200]
Inner chassis with heatsink assembly and USB assembly
(MG166CX-USB only)
[190]
[190]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400)
[200]: Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300)
[220]: PW Head Tapping Screw-B 3x8 MFZN2W3 (WF002600)
(Fig. 4)
[220]
[200]
[190] [190]
Priority Screw
MG166CX-USB/MG166CX/MG166C-USB/MG166C
[40]
[50]
Heatsink
Priority Screw
[80]
[40]: Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300)
[50]: Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300)
[70]: Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400)
[80]: Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300)
(Fig. 5)
Heatsink assembly
[50]
[40]
PS16X
[70]
[80]
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