Цитата из сервис мануала:
1. Turn on the main switch.
2. Enter "71" by using the number keys.
3. Press and hold the STOP key until a dot (·) appears in the top left corner of
the Copy Counter and then release it.
4. Press the STOP key again and then press the LIGHTES key.
NOTE: "5" will blink in the Copy Counter to show that the SP mode has
been accessed.
5. Enter the desired SP mode number using the number keys. The SP
mode numbers are given in the Service Program Mode Table.
NOTE: "1" is displayed in the Manual ID indicator (as shown below)
instead of "1" in the Copy Counter when SP mode numbers over
"100" are entered. The maximum number is "111".
6. Press the AUTO ID key to view the current setting.
NOTE: To enter a different SP mode number, press the AUTO ID key.
7. To leave SP mode, open and close the front cover or turn the main switch
off and on.
А что где-то написано про "107" в этом аппарате???