Xerox DocuColor 2240, Service Manual

Page: 144 / 1489

09/03
2-111
DC 3535/2240/1632, WC M24
6-389
Status Indicator RAPs Initial issue
6-389 Carriage Over Run Right
The carriage has overrun at the Scan End.
Procedure
Switch the power off. Remove the Platen Glass ( REP 6.2 ). Manually move the Full Rate Car-
riage. The carriage moves easily.
Y N
Repair as required ( PL 18.5 ).
Switch the power on. Enter dC330 [006-212] and select Start . Manually move the Full Rate
Carriage to the left until it stops, then move it to the right about 6 inches. The display
changes.
Y
N
Switch the power off. Remove the IPS Cover ( PL 18.3 ). Enter dC330 [006-212] and select
Start . Manually move the Full Rate Carriage to the left until it stops. The display indi-
cates Hi.
Y
N
Go to Flag 2 . Check the wire for a short circuit to GND. If the wire is good, replace
the IIT Registration Sensor ( PL 18.4 ).
+5 VDC is measured between P/J722 -B3 and P/J722 -B1 on the IIT/IPS PWB.
Y N
Replace the IIT/IPS PWB ( PL 18.3 ).
Move the Full Rate Carriage to the right about 6 inches. Less than +1.0 VDC is mea-
sured at P/J722 -B2 to GND.
Y N
Go to Flag 1 and Flag 2 . Check the wires for an open circuit. If the wires are good,
replace the IIT Registration Sensor ( PL 18.4 ).
Replace the IIT/IPS PWB ( PL 18.3 ).
Manually move the Full Rate Carriage to the left until it stops. Enter dC330 [006-005] (Scan)
and select Start . The Carriage Motor energizes.
Y N
+24 VDC is measured at
P/J725 -1 and -2 on the IIT/IPS PWB.
Y N
Replace the IIT/IPS PWB ( PL 18.3 ).
NOTE: In the next step, two of the four pins on P/J725 should measure at least +24 VDC.
The other two will measure approxi2 to +4 VDC.
+24 VDC is measured at two of the following pins on P/J725 : 3, 4, 5 or 6.
Y N
Go to Flag 3 and Flag 4 and check the wires for an open circuit. If the wires are
good, replace the Carriage Motor ( PL 18.5 ).
Replace the IIT/IPS PWB ( PL 18.3 ).
Select Stop . Enter dC330 [006-006] (Reverse). Select Start . The Carriage Motor energizes.
Y N
Replace the IIT/IPS PWB ( PL 18.3 ).
Check the following:
•
Carriage Motor Belt for disengagement, damage, or no tension ( PL 18.5 ).
• Carriage Capstan Shaft/pulley damage ( PL 18.5 ).
• Full Rate/Half Rate Carriage Position Adjustment ( ADJ 6.1 ).
Figure 1 6-389 RAP Circuit Diagram - IIT Registration Sensor
Figure 2 6-389 RAP Circuit Diagram - Carriage Motor