CHAPTER 11 TROUBLESHOOTINGCOPYRIGHT © 1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 11-892) 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'.Figure 11-7024) While the display indicates 'F', stop shorting JP103 and JP104.2. Ending Service Mode1) Press the Clear/Stop key.3. Selecting an Item1) 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.SERVICEJP104JP104JP103