41. OPTIONAL MODULES SECTION
This section can be selected and installed according to the user's
requirements. Open the cover and connect the module to connector
CN6. The optional modules are: SMP-R, SMP-S, & Bluetooth-2.1.
The signal for module playback can be assigned to Main Mix by 2TK
routing. When using SMP-R recording function, the Cn12 needs to be
connected. The signal comes from the Main Mix.