Scan Registration Sensor - Xerox DocuColor 2240 Service Manual

6-361 Scan Registration Sensor

Registration Sensor failure at carriage initialization.
Procedure
Switch the power off. Remove the Platen Glass
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
changes.
Y N
Switch the power off. Remove the IPS Cover
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
+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
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
Replace the IIT/IPS PWB (PL 18.3).
Manually move the Full Rate Carriage to the left until it stops. Enter
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
NOTE: In the next step, two of the four pins on
The other two will measure approximately +2 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
Replace the IIT/IPS PWB (PL 18.3).
Select Stop. Enter dC330 [006-006] (Reverse). Select Start. The Carriage Motor energizes.
Status Indicator RAPs
6-361
(REP 6.2). Manually move the Full Rate Car-
(PL 18.3). Enter dC330 [006-212] and select
18.4).
18.3).
(PL 18.4).
dC330 [006-005] (Scan)
18.3).
P/J725 should measure at least +24 VDC.
(PL 18.5).
Y N
Replace the IIT/IPS PWB
Check the following:
• Carriage Motor Belt for disengagement, damage, or no tension
• Carriage Capstan Shaft/pulley damage
• Full Rate/Half Rate Carriage Position Adjustment
display
Figure 1 6-361 RAP Circuit Diagram - IIT Registration Sensor
Figure 2 6-361 RAP Circuit Diagram - Carriage Motor
09/03
2-106
(PL 18.3).
(PL
(PL 18.5).
(ADJ 6.1).
DC 3535/2240/1632, WC M24
18.5).
Initial issue