The C2770 error is a transfer belt shift error. On the new Alphard series, the transfer belt has a mechanism to center the transfer belt, in case it starts to walk off one side of the pulleys. And it works great until you install the AK-730 bridge unit.
On instruction 19. they tell you to install the front left stay with the 20mm long black screws. If you follow that instruction the bottom screw will press against the transfer belt cleaning unit, preventing it from self-adjusting, and forcing the belt gradually off one side. The fix is laughably simple. Install 12mm long screws for the front left stay.
This was discovered in class. You know how after 10 or 20 disassemblies the test machines end up with all the wrong screws in the wrong places? The 30mm long screws for the latching bracket caused an immediate code C2770. With the 20mm long screws it takes about 15K prints to walk off it's pulleys, but same affect.
Answers & Comments
The C2770 error is a transfer belt shift error. On the new Alphard series, the transfer belt has a mechanism to center the transfer belt, in case it starts to walk off one side of the pulleys. And it works great until you install the AK-730 bridge unit.
On instruction 19. they tell you to install the front left stay with the 20mm long black screws. If you follow that instruction the bottom screw will press against the transfer belt cleaning unit, preventing it from self-adjusting, and forcing the belt gradually off one side. The fix is laughably simple. Install 12mm long screws for the front left stay.
This was discovered in class. You know how after 10 or 20 disassemblies the test machines end up with all the wrong screws in the wrong places? The 30mm long screws for the latching bracket caused an immediate code C2770. With the 20mm long screws it takes about 15K prints to walk off it's pulleys, but same affect.