So to recap:
- The hub was turning when running the component check, as expected.
- The hub clicked with each turn, as expected (I only know this because it continued to do it AFTER fixing the problem).
- The flag on the ITB turned, as expected.
- The sensor worked, as expected.
- After replacing the ITB, the 59.f0 error continued.
I finally decided to go for the fuser drive assembly. If you ever have to bid this job, leave yourself at least 2 1/2 hrs. The hardest part is just getting all the cables and harnesses back through the guides and plugged into the right spot. If you follow the manual's directions (especially lining up the cartridge cams), you shouldn't have any problems.
The gears turning the hub are timed, and they were out of alignment, as shown in the pic below. So even though the hub was turning, it wasn't turning right. The gear is actuated by a good old solenoid... so in about 8 years, I imagine these things are going to get stuck like they do in the 4300's and older machines.
I got a new one, since they're cheap and I didn't want to have to tear it all apart again. It might have been fine if I had just realigned things, but I wasn't going to take the chance.
cp3525.jpg
Bookmarks