A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
Text excerpt from page 79 (click to view)
Dirt on the back of paper
<Printing> Possible cause Fixing unit Step 1 Check Is the pressure roller dirty? Is any other area in the printer dirty? Dirt in the drum unit 2 Is the transfer roller dirty? Is the problem solved after the drum unit is replaced? No Replace the high-voltage power supply PCB. Yes Result Yes Remedy Clean the pressure roller. (See the following note.) Replace the drum unit
Note: Clean the pressure roller as follows; (1) Set three or more sheets of paper in the MP sheet feeder. (2) Open the top cover. (3) Turn on the power switch while holding down the switch on the printer control panel. (4) Release the panel switch when the Drum lamp is on. (5) Close the top cover. (6) Hold down the panel switch until the Ready lamp is on, then release the switch. (7) Print three patterns; grid, zip and solid black. (8) Turn off the power switch with the top cover closed. (9) Set paper in the manual slot with the solid black side up. (10) Turn on the power switch while holding down the switch on the control panel. (11) Release the panel switch when the Drum lamp is on. (12) Press the panel switch again and release it immediately. (13) Print a page of test pattern while cleaning the pressure roller.