Allen&Heath GL2 - Manual (Page 3)

GL2 SYS-LINK EXPANDER OPTION SHEET AP0204 3 ALLEN & HEATH
4a. FIT THE SYS-LINK CIRCUIT ASSEMBLY GL2 DIAGRAM 1
Unplug and remove the existing console IDC ribbon harness.
Cut out a section of the earth busbar between stereo channels 11/12 and 13/14 leaving about 3mm
at each end.
Remove the 4x screwlocks from the front of the SYS-LINK D-connectors. Keep these to secure
the connectors after the base is refitted.
Remove the 2x M3x6mm screws from the end of the SYS-LINK assembly spacers.
Position the SYS-LINK assembly between the stereo channels 11/12 and 13/14. Solder the free ends
of the green earth wires to the cut ends of the console earth busbar.
Now mount the SYS-LINK assembly to stereo channel 11/12 using the M3x2mm screws previously
removed through the stereo board holes into the spacers.
4b. FIT THE SYS-LINK CIRCUIT ASSEMBLY GL2-S DIAGRAM 1
Unplug and remove the existing console IDC ribbon harness.
Cut out a section of the earth busbar between stereo channels 15/16 and 17/18 leaving about 3mm
at each end.
Remove the 4x screwlocks from the front of the SYS-LINK D-connectors. Keep these to secure
the connectors after the base is refitted.
Remove the 2x M3x6mm screws from the end of the SYS-LINK assembly spacers.
Position the SYS-LINK assembly between the stereo channels 15/16 and 17/18. Solder the free ends
of the green earth wires to the cut ends of the console earth busbar.
Now mount the SYS-LINK assembly to stereo channel 15/16 using the M3x2mm screws previously
removed through the stereo board holes into the spacers.
5a. SOLDER ON THE SYS-LINK WIRE HARNESS GL2 DIAGRAM 2
Lay the harness above the faders positioning each branch in place against the Group and Master
circuit assemblies.
Solder the prepared ends of the harness wires to their corresponding square solder pads on the Group
assemblies. This may be done with the assemblies in place by carefully using a fine-tipped
soldering iron. Make sure the wiring pads are tinned with fresh solder first for good joints. The
suggested order is :
Group Assembly 1 Pink wire, then Blue, Red, Yellow
Group Assembly 2 Pink, Blue, Red, Yellow
Lift the Master Assembly slightly from the panel to gain access to the wiring pads. Do this by
removing the master control knobs, potentiometer nuts and chrome jack socket nut. Desolder the
earth busbar from the Master assembly.
Solder the harness wires to the wiring pads on the Master Assembly as illustrated. the suggested
order is :
Master Assembly Pink, Blue, Red, Yellow, Brown, Grey
Refit the Master assembly. Make sure that the jack washers, potentiometers and meter LEDs are
correctly positioned in the panel cutouts. Replace the control nuts and knobs.
Resolder the earth busbar to the Master Assembly.