Xerox WorkCentre 5790 Series Service Manual page 297

A
NOTE: The routine 09-040 times out after 5 seconds.
The toner dispense motor runs.
Y N
Go to Flag 2. Check MOT09-040. Refer to:
• GP 10 How to Check a Motor.
• P/J6, IOT PWB.
• Go to 01G +24V Distribution RAP.
• Go to 01B 0V Distribution RAP.
Install new components as necessary:
Toner dispense module, (35-55 ppm)
Check the toner dispense drive gears,
Y N
Install a new toner dispense module, (35-55 ppm)
9.15 Item 1.
Add the code 09-310, low toner sensor. Energize the components in the following order:
• 04-010, main drive motor.
• 09-010, photoreceptor motor.
• 09-040, toner dispense motor.
When the toner dispense motor stops, the toner level sensor display value is LOW.
Y N
Go to the 09-310, 09-390 Low Toner Sensor Failure RAP.
Perform the TC Increase Adjustment.
Check the wiring, GP 7, between P/J6 on the IOT PWB and
Figure 1. The wiring is good.
Y N
Repair the wiring.
Go to Flag 3. +24V is present at P/J93, pin 2.
Y N
Disconnect P/J93, Figure 1. +24V is present at the harness end of P/J93, pin 2.
Y N
Go to:
• 01G +24V Distribution.
• 01B 0V Distribution RAP.
Install a new developer module, PL 9.15 Item
Go to Flag 5. 0V is available at P/J93 pin 10.
Y N
Go to the 01B 0V Distribution RAP.
Enter dC131, 09-069, TC sensor control voltage, and record the displayed value. (100 dis-
played equals 1 volt). Go to Flag 4. Check the voltage at P/J93, pin 9. The displayed value
is within 0.2V of the voltage checked at
Xerox® WorkCentre® 5790 Family
PL 9.17 Item 1, (65-90 ppm) PL 9.15 Item
Figure 1. The gears rotate.
PL 9.17 Item 1, (65-90 ppm)
P/J93 on the developer module,
2. Perform dC905 TC Sensor Calibration.
P/J93 pin 9.
Y N
Disconnect P/J93. Check the voltage at pin 9. The displayed value is within 0.2V of
the voltage checked at P/J93
Y N
Check the wiring, GP 7, between
good.
Y N
Repair the wiring,
Perform OF7 IOT PWB Diagnostics RAP before a new IOT PWB is installed,
1.10 Item 2. Perform the
1.
Install a new developer assembly, (35-55 ppm)
2. Perform dC905 TC Sensor Calibration.
PL
Perform the TC Reduction Adjustment.
If the 09-360 is intermittent and causes the message Machine unavailable. Perform
PWB Diagnostics RAP before a new IOT PWB is installed,
Perform the TC Reduction Adjustment.
TC Reduction Adjustment
Perform the following:
1. Enter dC330, code 04-010, main drive motor; code 09-010, photoreceptor motor; 09-066,
developer bias.
2. Start the routine. The start will have to be pressed every 5 seconds to restart the devel-
oper bias routine.
3. Monitor the voltage output,
NOTE: The toner concentration cannot be adjusted and maintained by making high area
coverage prints.
4. Run the routine until the monitored voltage is greater than 0.9 volts.
5. Check the image quality.
TC Increase Adjustment
Perform the following:
1. Enter dC330, code 04-010, main drive motor; 09-040, toner dispense motor; 09-045,
toner cartridge motor.
2. Start the routine. The start will have to be pressed every 5 seconds to restart the toner
dispense motor and the toner cartridge routines.
3. Monitor the voltage output,
4. Run the routine until the monitored voltage is between 2.2 and 2.8 volts
5. Check the image quality.
May 2013
2-265
pin 9.
P/J93 and P/J6 on the IOT PWB. The wiring is
REP 1.2. Perform the TC Increase Adjustment
TC Increase Adjustment
PL 9.17 Item 2, (65-90 ppm)
PL 1.10 Item 2.
Flag 1, at P/J6 pin 8 on the IOT PWB.
Flag 1, at P/J6 pin 8 on the IOT PWB.
Status Indicator RAPs
09-360, 09-361, 09-362, 09-363
PL
PL 9.15 Item
OF7 IOT