Xerox ColorQube 9303 Series - Page 44

February 2013
2-20
ColorQube® 9303 Family
01B
Status Indicator RAPs
01B +3.3V ESTAR Distribution RAP
Use this RAP to diagnose +3.3V ESTAR supply and distribution faults in the machine. This
supply is used to power the IME logic circuits. This supply is not to be confused with the +3.3V
supply, which is generated on the power distribution PWB. To diagnose +3.3V faults go to 01C.
Procedure
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to GP 14. Disconnect the power cord. Electricity can cause
death or injury. Moving parts can cause injury.
Check the green LED, Figure 1, on top of the power supply unit. This is lit to indicate that the
+3.3V ESTAR supply is available in the power supply unit.
The green LED is lit.
YN
The AC supply is good.
YN
Go to 01A AC Power Distribution RAP.
Go to the 01A AC Power Distribution RAP. Perform the Main Power Rocker Switch
Check.
Switch off, then switch on the machine, GP 14. Check the PEST fault history, dC123. There
are hard PEST faults shown.
YN
Check that the +3.3V is within tolerance, +3.3V +/- 2.5% at JDC1 between pin 9 and pin
14 refer to WD 1.4.
NOTE: To view the +3.3V ESTAR supply generation, refer to WD 1.3. +3.3V ESTAR is
only distributed on PJDC1 and PJDC3 on the power supply unit. A short circuit on this
output also disables the +17V output.
The +3.3V supply is within tolerance.
YN
Install a new power supply unit, PL 1.15 Item 2.
Determine which PWB has the distribution fault, go to PWB Checks.
Perform the RAP(s) given by the hard PEST fault code(s), then return to this RAP.
PWB Checks
Check the PWB’s below to determine which PWB has the distribution fault. Follow the distribu-
tion back to the supply. Repair the wiring, REP 1.1 or install a new PWB or power supply unit,
PL 1.15 Item 2 as necessary. Refer to GP 15 for the location and function of the LED’s on the
PWB’s.
NOTE: Many of the PWB’s have distribution fuses.
Select the required PWB:
• IME Controller PWB
• Media Path Driver PWB
• Marking Unit Heater PWB
• Marking Unit Driver PWB
• Drum Driver PWB
• Quad Wave Amp PWB
• Ink Load Entry PWB
• Printhead 1 to 4
• 3 Tray Module PWB
IME Controller PWB
• To view the +3.3V ESTAR distribution from the power supply unit to the IME controller
PWB, refer to WD 1.4.
• For +3.3V ESTAR faults on the IME controller PWB, refer to:
– WD 9.5
– WD 9.6
– WD 9.7
• The components that follow are driven from +3.3V ESTAR from the IME controller PWB
– Printheads, PL 91.20 Item 2 or PL 91.25 Item 2
– Quad wave amp PWB, PL 92.10 Item 3
– Marking unit driver PWB, PL 92.10 Item 4
• If necessary, install a new IME controller PWB, PL 92.10 Item 1, or one of the compo-
nents in the list above.
Media Path Driver PWB
• To view the +3.3V ESTAR distribution from the power supply unit to the media path driver
PWB, refer to WD 1.5.
• For +3.3V ESTAR faults on the media path driver PWB refer to:
– WD 8.1
– WD 8.2
– WD 8.3
– WD 8.4
– WD 8.5
• Repair the wiring as necessary, REP 1.1.
• The components that follow are driven from +3.3V ESTAR from the media path driver
PWB:
– Upper door interlink PL 82.10 Item 10
– Vertical transport sensor PL 82.10 Item 7
– 3 tray module PL 73.16
– Ink loader door switch PL 93.10 Item 19
– Bypass width sensor PL 74.11 Item 6
– Potentiometer PL 74.11 Item 10
– Ink load entry PWB PL 93.10 Item 8
– Tray 5 control PWB PL 75.68 Item 8
• If necessary, install a new media path driver PWB, PL 1.15 Item 5, or one of the compo-
nents in the list above.
Marking Unit Heater PWB
• To view the +3.3V ESTAR distribution from the marking unit heater PWB, refer to WD 9.8.
• For +3.3V ESTAR faults on the marking unit heater PWB, refer to WD 9.8
• If necessary, install a new marking unit heater PWB, PL 92.10 Item 5.