Service manual

FrameMaker Ver.5.5E(PC) Di350 TROUBLESHOOTING
98.12.09
T- 4 6
(1) Blank Copy
Section Step Check Item Result Action
Engine 1 Is toner empty? YES Check Sub Hopper Toner Empty
Switch S4 and change the Toner Bot-
tle.
2 Is the drive transmission mechanism to
the Developing Unit in good condition?
NO Check and change as necessary.
3 Is the image transfer current terminal
intact?
NO Check and change as necessary.
4 Does the laser shutter (the one located
on the laser beam path between the PH
Unit and PC Drum) open and close
properly?
NO Adjust so that the shutter opens and
closes properly.
5 Does the I/C Shutter open and close
properly?
YES Change HV1, PH Unit, or PWB-A, in
that order.
NO Adjust so that the shutter opens and
closes properly.
IR 1 Is the Scanner drive transmission mech-
anism in good condition?
NO Check and change as necessary.
2 Do the connections from CCD to HGB
remain intact?
NO Reconnect.
3 Do the connections from HGB to UN2
remain intact?
YES Change CCD, HGB, or UN2, in that
order.
NO Reconnect.
(2) Black Copy
Section Step Check Item Result Action
Engine 1 Is the PC Drum charge voltage terminal
in good condition?
NO Check and change as necessary.
2 Is the grid voltage terminal in good condi-
tion?
NO Check and change as necessary.
3 Is the developing bias terminal in good
condition?
NO Check and change as necessary.
4 Does a black copy persist even after the I/
C has been replaced with a new one?
YES Change HV1 or PWB-A.
IR 1 Does the Exposure Lamp turn ON when
“ON” is selected for “Lighting Exposure
Lamp”? “Lighting Exposure Lamp” can
be selected as follows: Tech. Rep. Mode
Movement Check
Scanner.
YES Perform steps 4 and onward.
NO Check connectors and harnesses and
perform steps 2 and 3.
2 Does the voltage across CN13BCR-1 on
BCR and GND change from DC24V to
DC0V when step 1 is performed again?
NO Change BCR, HGB, or UN2, in that
order.
3 Is an AC voltage output from INV to
Exposure Lamp when step 1 is per-
formed again?
YES Change LA2.
NO Change INV.
4 Are the mirrors and lens installed prop-
erly?
NO Install them properly.
5 Are the mirrors and lens dirty? YES Clean or change.