COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
11-160
B. Using Service Mode
1) Open the front door, and insert the door switch actuator. If you want to make checks
while making copies (I/O display mode), set the appropriate copying mode.
2) Press the service mode switch with a hex key.
• The machine starts service mode and indicates ‘$’ in the upper right corner of the
message display.
3) Enter the number of the mode (See table 11-701.) you want for checks or
adjustments using the
key and the keypad; for example,
,
, and
.
4) Using the
or
key, select the appropriate screen.
5) Make checks or adjustments.
• To store any input data, press the user mode key (
).
6) End service mode.
• Press the Reset key (
) once to leave the current mode.
• Press the Reset key twice to end service mode.
• Service mode ends when you turn off the power switch or disconnect the power
plug. (It will not end, however, when you open the front door or the pick-up door.)
C. Using Adjustment Mode and Options Mode
In adjustment mode and options mode, the options made on the control panel are
stored in the RAM on the control PCB so that they drive the machine as if they were
made on the variable resistor and switches.
Table 11-702 is the label attached behind the machine's front door.
Each machine is adjusted at the factory, and the adjustment values are recorded on
this label.
If you replaced the DC controller PCB or initialized the RAM, you must enter the
values recorded on the label in the RAM on the control PCB. By the same token, you
must record any new values you entered in the field on this label.
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