Thank you very much for this Service Manual, it helped us a lot to repair the M-4318!
...BUT: The parts list is missing and the free parts katalog on web isn't complete, so now we don't know the part numbers of the defect parts :(
We had to build them out of a working machine, and need the numbers to reorder the missing parts now.
Complete original Service Manual in good (scan) quality!
Text excerpt from page 5 (click to view)
3. Mac (Memory All Clear) operation
Procedure A (1) Plug the power cord into an outlet. (2) Pressing the FEED button and turn the mode switch to PRG position. (3) Release the FEED button. After few seconds, MAC operation will be executed. (4) The following receipt will be issued, if completed. Procedure B (1) Remove the power cord from AC outlet. (2) Remove the memory protection batterey. (3) Leave the machine for few minutes. (4) Plug the power cord to AC outlet and then MAC operation is executed. (5) Set the memory protection battery.