Replacing the Engine Board
1. Place the Engine Board in position and install the six screws to secure the board to the
support brackets.
2. Connect the at ribbon cable from the Interface Board to J7 on the Engine Board. Be sure to
reinstall the cable locking clip.
3. Connect the stranded and shielded wire cables in the following order:
J11, J31, J14, J26, and J23.
4. Be sure the cables are properly routed and bundled. If the service you performed required
cutting tie wraps, apply new tie wraps.
The Interface Board
The Interface Board is mounted on the rear panel plate secured to the CUP2 back panel. When
installed, the Interface Board sits perpendicular to the back panel. The hardware that secures
the rear panel plate and Interface Board to the back panel is accessible when the back panel is
in the open position.
The following two procedures describe disconnecting and removing the Interface Board. The
rst procedure, which immediately follows, describes disconnecting the cables. The second
procedure describes removing the Interface Board and the rear panel plate as an assembly from
the CUP2, then removing the Interface Board from the rear panel plate.
ScanPortJ1 Control PanelJ7J4 TrebleJ5 Bass
J24
115V
230V
Power
Switch
DC Power Out
J25
DC Power In
J17
Audio I/O
MIDI
J3
Pedals
J16
Phones
J11
J10
USB Cntl.
USB Data
J13
Audio In
J14
Slider to
Audio
J8
J15
Xfmr Primary
Interface
Board
11
1
1
1
1
1
1
J23
Figure 4-4 Interface Board connector locations
Disconnecting the Interface Board
1. Following Steps 2N4, disconnect the cables listed in Table 4-2.
Disassembly/Assembly
Cabinet Electronics
4-5
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