Electrical System - Canon GP200 Service Manual

3. OPERATIONS AND TIMING
K. Electrical System
1 When Replacing major Parts
Item
Before replacing the
image processor PCB
After replacing the image
processor PCB
3–242
COPYRIGHT © 1996 CANON INC.
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Service mode
*4* PRM_PRNT
(effective only if equipped
with fax function)
*4* RAM Clear
*3* (Enter the value record-
ed on the label.)
• Service label attached to
the front door
• Label attached to the
image processor PCB
• Label attached to the copi-
er power supply PCB
*4* Shading auto cor-
rection
*4* PD density auto
correction
*4* 200PWM density
auto correction
*4* 600PWM density
auto correction
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
Steps
1) Print out all registration data
(one-touch dialing, speed
dialing, user data list, etc.;
effective only if equipped with
fax functions).
2) If the machine is equipped
with fax functions, execute
'PRM_PRNT' (*4*), and take
notes of the settings in user
mode and others.
• Executing the mode will print
out the settings/values under
'ADJUST' (*3*), 'OPTOIN'
(*6*), and 'COUNTER' (*6*).
If the machine is not
equipped with fax functions,
you cannot execute
'PRM_PRNT' (*4*).
1) Replace the image processor
PCB.
2) Execute 'RAM clear' in ser-
vice mode (*4*).
3) Start service mode (*3*), and
enter the value recorded on
the service label.
4) Enter the values recorded on
the image processor PCB
under the appropriate item
(*3*) as follows:
• 600PWM MIN
• 600PWM MAX
• 200PWM MIN
• 200PWM MAX
5) Execute 'shading auto correc-
tion' in service mode (*4*).
6) Execute 'PD density auto cor-
rection', '200PWM density
auto correction', and
'600PWM density auto cor-
rection' in service mode.
7) Enter settings/values under
'OPTION' (*5*) and in user
mode.