Last Modified on ~~LASTMOD~~

1. Fit resistor 201331 to the Dual Engine PCB to location VDD. Fit on the bottom two pads as this is the configuration for the 4161 variant

2. Add resistor 201880 to position R102 if not already fitted ?? (check)

3. Ensure the 2x SMT standoffs are fitted then insert the TX6Q module and screw down to hold in place

Get the modification work peer checked – ensure all wires are securely soldered in the correct locations and heatshrink has been added where required.

Ensure the external surfaces of the case are clean and not scratched – reject if they are damaged in any way.

The anodizing (or powder coating) is very fragile so take care at all stages of assembly – store on bubble wrap where possible.

Fit the following parts:

Internal power cable DSUB connector (Secure with screw locks) Heatsink assembly

Place the D connector 202317 into the hole shown and secure with screw locks 202868. Add Thermal Paste to other side of bobbin. Screw the PCB 10823 onto the PEM inserts with Screws M3x6 202431 and M3 Washers shakeproof 200508, solder the pins of the D connector. Place PCB 10841 (Daughter) onto chassis using standoff 202674 in approx position shown.

Fit CAN PCB, but before fitting, do continuity tests

Check for continuity for each L[1,2,3]: A → B C → D

Check for high resistance (> 1M) for each L[1,2,3]: A → C B → D

Fit Dual Engine PCB. Align with pins on CAN PCB and DSUB connector. Fit screws and shake proof washers x6. Fit coin cell battery. Solder pins on DSUB to PCB Place PCB 10841 (Daughter) onto chassis using standoff 202674.

Take care when fitting nuts so the case does not get scratched.

Ensure that the washer on the screw by L1 is not overhanging the track going to R106 as this could cause a short.

internal:proddocs:diagram1

Do continuity checks between CAN PCB and Dual Engine PCB

Picture required on next build

Ensure the bezel is not scratched or damaged – touch up with paint pen if needed.