Canon NP6412 Service Manual page 494

CHAPTER 4 SERVICE MODE
2) Close the machine's top unit, and connect the flexible cable from the control to the DC control-
ler PCB; then, turn on the power switch.
3) Short JP103 and JP104 on the DC controller PCB with a screwdriver.
• The display will indicate 'F'.
4) While the display indicates 'F', stop shorting JP103 and JP104.
2. Ending Service Mode
1) Press the Clear/Stop key.
3. Selecting an Item
1) While the display is indicating 'F', press the +/- key to select the item to check or adjust.
• The 10s digit will flash.
2) Press the Copy Start key to start the item.
4-2
SERVICE
JP103 JP104
Figure 4-2