MP 8000 Error SC990

[fbkhan3]

I have MP 8000 throwing SC990.

Originally had SC220, Replaced Polygon Mirror Motor and BCU(D054-5122)with old (EPROM) which fixed the Laser error.
Now it continuously throws
SC990,

Details
LINE : 1141
VAL: 995
FILE: ENG: device.c

1:Firmware flashed.
D0545127E/Engine
B2475101Z/System/Copy

2: HDD Replaced

3: Maintenance Kits are All New

4: PM counters 0

went through goose Guide and done/checked all related things .

Kindly suggest if i need to replace controller or is there anything else which can be a fix.


Regard's

[trc]

[fbkhan3]

Re: MP 8000 Error SC990

Laser is from another working machine, and SC history is all 990 and 991.

Regard's

[TonerMunkeh]

Re: MP 8000 Error SC990

Another Martini of the same age, i.e. 6000/7000 or another range, i.e. 6001?

[fbkhan3]

Re: MP 8000 Error SC990

Thank you very much TonerMunkeh

Laser unit is from 7000,brand new mirror motor and BCU ordered from Ricoh.

Regard's

[kannuki2]

Re: MP 8000 Error SC990

Sc 220 is caused by two things.

1. Check the condition of IPU BCU Harness (B247 5451) if damaged replace it
2. The laser diode board B2471859 is defective.

Check for bent pin on the laser connectors.