Canon imageCLASS D600s Service Manual page 276

Cartridge
Laser scanner unit, DC controller PCB
Transfer guide
High-voltage contact (between transfer charging roller and high-voltage spring)
High-Voltage Contact (high-voltage spring and DC controller PCB; J209), Transfer charg-
ing roller
Rod lens array (contact sensor)
Black offset
Connector
Contact sensor
Analog processor PCB, Image processor PCB
COPYRIGHT © 2001 CANON INC.
Chapter7B.p65
9) Try replacing the cartridge. Is the problem corrected?
YES: End.
10) Try replacing the laser scanner unit. Is the problem corrected?
YES: End.
NO: Replace the DC controller PCB.
11) Measure the transfer guide and other metal portions. Is the resis-
tance 0 Ω Ω Ω Ω Ω
YES: Check the area around the toner guide for a piece of metal (e.g.,
screw).
12) Is the high-voltage spring used to supply high voltage to the trans-
fer charging roller soiled?
YES: Clean it.
13) Is the connection between the high-voltage spring and DC control-
ler PCB (J209) normal?
YES: Replace the transfer charging roller.
NO: Correct it. If it cannot be corrected, replace the faulty part.
14) Clean the rod lens array of the contact sensor. Is the problem cor-
rected? (See 4.2 of Chapter 6.)
YES: End.
15) Execute black offset adjustment. Is the problem corrected? (See 1.2
of this chapter.)
YES: End.
16) Is the connection of the following connectors normal: J501 and
J503 on the analog processor PCB; J317 on the image processor
PCB; and J504 of the contact sensor?
NO: Connect them firmly. If the flexible cable has a scratch, replace it.
17) Try replacing the contact sensor. Is the problem corrected?
YES: End.
18) Try replacing the analog processor PCB. Is the problem corrected?
YES: End.
NO: Replace the image processor.
CANON imageCLASS D600s/PC1060s/PC1200s/iR1200s REV. 0 SEPT. 2001
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CHAPTER 7 TROUBLESHOOTING
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