Carriage Over Run Right - Xerox DocuColor 1632 Service Manual

6-389 Carriage Over Run Right

The carriage has overrun at the Scan End.
Procedure
BSD 6.4 BSD 6.12A
Turn off the power. Remove the Platen Glass. Manually move the Full Rate Carriage. The
Carriage moves easily.
Y N
Clear the Carriage Cable distortion, stranding, damage and foreign substance on the
CARRIAGE RAIL etc., causing the load.
Turn on the power. Enter dC330 [006-212] and press Start. Manually move the Full Rate Car-
riage and turn the IIT Registration Sensor ON/OFF.
Y N
Repair the IIT Registration Sensor using Generic Transmissive Sensor RAP.
Enter dC330 [006-005] (Scan) or [06-006] (Return) and press Start. The
energizes.
Y N
+24VDC is measured between the IIT/IPS PWB j725-2 (+) and GND (-).
Y N
Visually check the F6 Fuse on the IIT/IPS PWB. The fuse is open.
Y N
Turn OFF the power. Disconnect the IIT LVPS j702 and turn the power ON.
+24VDC is measured between the IIT LVPS j702-1 (+) and GND (-).
Y N
Check the power (ACH) to the IIT LVPS.
replace the IIT LVPS (PL 18.4)
Check for a short circuit by referring to Chapter 7 Wiring Data ( IIT+24VDC)
Replace the IIT/IPS PWB (PL 18.3)
When dC330 [006-005] (Scan) or [006-006] (Return) is ON, +24VDC is measured
between the Carriage Motor p739-1 (+) and GND (-).
Y N
In the same Diagnostic, +24VDC is measured between the IIT/IPS PWB j725-1
(+) and GND (-).
Y N
Replace the IIT/IPS PWB (PL 18.3)
Check the wire between the IIT/IPS PWB j725-1~6 and the Carriage Motor p739-1-6
for an open circuit or poor contact.
Check the wire between the IIT/IPS PWB j725 and the Carriage Motor p739-5 for an open
circuit or poor contact.
If no problems are found, replace the Carriage Motor (PL 18.5).
If the problem continues, replace the IIT/IPS PWB (PL 18.3).
Check the following:
ï The Carriage Motor BELT for damage, slackening and disengagement.
Status Indicator RAPs
6-389
The display changes.
Carriage Motor
If no problems are found,
ï The CARRIAGE CAPSTAN SHAFT/PULLEY for wear, distortion and chips
ï Full Rate/Half Rate Carriage Position Adjustment (ADJ)
If no problems are found, replace the IIT/IPS PWB (PL 18.3).
6/02
2-94
Prelaunch Training/Review
DC1632/2240