Canon CLC5000 - Page 362

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
5-4
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTINS
F05-101-02
For Y/M/C, check
• developing high-voltage system
• toner supply system
• color toner density sensor
For Y/M/C, check
• developing high-voltage system
• toner supply system
• SALT sensor
START
NO
c. Checking the Developing System
Optimum range
SGNL-Y
SGNL-M
DENS-C
REF-Y
REF-M
REF-C
700~912
700~912
700~912
377~848
377~848
377~848
Is the
setting for a specific
color for 'DENS', 'SGNL',
and 'REF' of 'DENS' under
'DISPLAY' in service
mode within the
optimum range?
YES
Is the
setting for a specific
color for P-SGNL' and 'P-REF'
of 'PATCH' under 'DISPLAY'
in service mode within
the optimum
range?
YES
NO
Optimum range
SGNL-S-Y
SGNL-S-M
SGNL-S-C
SGNL-S-K
REF-S-Y
REF-S-M
REF-S-C
REF-S-K
SGNL-D-Y
SGNL-D-M
SGNL-D-C
SGNL-D-K
SIGG-S-Y
SIGG-S-M
SIGG-S-C
SIGG-S-K
640~850
640~850
640~850
192~389
464~544
464~544
464~544
464~544
380~900
380~900
380~900
300~720
50~250
50~250
50~250
50~250
Check the transfer blade.
Check the transfer belt.
Check the environment sensor.
NO
Check HVT-1.
YES
START
Check the latent static
image formation system.
Is the test
print considerably
light?
YES
NO
Check the connection of a
connector on HVT3(A/B) PCB.
NO
a. Checking the Transfer System
NO
Check the drive system of
the transfer blade.
Check the pre-
exposure lamp
and the
activation
circuit system.
START
Check the developing system.
Is the pre-exposure
lamp ON?
NO
YES
YES
b. Checking the Latent Static Image Formation System
• Check the
primary
output system.
• Check the
potential
control system.
Is the
setting for a specific
color for 'V00' of 'EPOT'
under 'DISPLAY' in service
mode within the
optimum
range?
NO
YES
NO
Optimum range
VOO-Y
VOO-M
VOO-C
VOO-K
VFF-Y
VFF-M
VFF-C
VFF-K
350~800
350~800
350~800
350~800
50~300
50~800
50~800
50~800
Is the
locking/releasing
operation of the
transfer blade
normal?
Is uneven
density or white
spots noted on TYPE=4
Test Prints?
Is the
setting for a specific
color for 'VFF' of 'EPOT'
under 'DISPLAY' in service
mode within the
optimum
range?
• Check the laser
output system.
• Check the
potential
control system.