Xerox WorkCentre 5790 Series Service Manual page 296

09-360, 09-361, 09-362, 09-363 Toner Concentration Sensor
Failure RAP
09-360 The toner concentration sensor has registered a reading outside the range, +0.75V to
+4.55V for three consecutive sheets.
09-361 The toner concentration sensor is reading high. This indicates that the toner concentra-
tion (TC) is low.
09-362 The toner concentration sensor is reading low. This indicates that the toner concentra-
tion (TC) is high.
09-363 This code is generated by the following factors:
• The developer is not positioned correctly against the xerographic module.
• The toner concentration is low.
• The machine is being installed.
• On the fifth consecutive occurrence.
GUI message - TONER CONTROL FAILURE
Initial Actions
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 developer roll area for toner and bead contamination. If necessary, go to
Image Quality Entry RAP.
• If 09-360 fault, enter dC131 location 09-115, sensor failure lockout flag. Check that it is
set to '0'. If set at '1' the toner dispense motor will not run.
• If 09-361 fault, enter dC131 location 09-001 TC lockout low. Check that it is set to '0'. If
set at '1' the toner dispense motor will not run.
– Check that when the xerographic module latch is in the locked position, the devel-
oper module is correctly installed,
• If 09-362 fault, enter dC131 location 09-276 TC lockout high. Check that it is set to '0'. If
set at '1' the toner dispense motor will not run
• Switch off the machine, then switch on the machine,
Initial Procedure
Make 20 prints. If the following three conditions apply, go to the
Sensor Failure RAP. If not continue at the Procedure.
NOTE: If the machine is unable to make 20 prints, perform the
1. The prints or copies are faint.
2. The toner cartridge is not rotating.
3. The low toner sensor, 09-310, reading is high.
Status Indicator RAPs
09-360, 09-361, 09-362, 09-363
WARNING
REP 9.2.
GP 14.
09-310, 09-390
TC Increase Adjustment.
Procedure
NOTE: The door interlock switch must be cheated when checking +24V components.
Enter dC330 code 04-010, to run the main drive motor. Go to
pin 8 while the main drive motor is running. The voltage is outside the range of +0.7V to
+4.5V.
Y N
Check the steps that follow:
• Check the wiring,
• Refer to the 01B
• The developer module is correctly installed.
The voltage at P/J93, pin 8, is less than +0.75V.
Y N
The voltage is greater than +4.5V. Check the wiring,
present at P/J93, pin 2.
Y N
Disconnect P/J93,
Y N
Go to:
• 01G
• 01B
Install a new developer module, (35-55 ppm)
Item 2. Perform
IQ1
Go to Flag 5. 0V is available at P/J93, pin 10.
Y N
Go to the 01B
Enter dC131, 09-069, TC sensor control voltage, and record the displayed value. (100
displayed equals 1 volt). Go to
played value is within 0.2V of the voltage checked at P/J93, pin 9.
Y N
Disconnect P/J93. Check the voltage at pin 9. The recorded value is within 0.2V
of the voltage checked at P/J93, pin 9.
Y N
Check the wiring,
ing is good.
Y N
Low Toner
Repair the wiring,
Perform
PL 1.10 Item
Install a new developer module, (35-55 ppm)
Item 2. Perform
Enter dC330. Enter the code 04-010, main drive motor. Press start. Add the code 09-040,
toner dispense motor. Press Start.
A
May 2013
2-264
Flag
GP 7, between P/J93 to P/J6 on the
0V Distribution RAP.
GP 7. Go to
Figure 1. +24V is present at the harness end of P/J93, pin 2.
+24V Distribution RAP.
0V Distribution RAP.
PL 9.17 Item
dC905 TC Sensor Calibration.
0V Distribution RAP.
Flag 4. Check the voltage at P/J93, pin 9. The
GP 7, between P/J93 and P/J6
REP 1.2. Perform the TC Increase
OF7 IOT PWB Diagnostics RAP before a new IOT PWB is installed,
2.Perform the TC Increase Adjustment.
PL 9.17 Item
dC905 TC Sensor Calibration.
Xerox® WorkCentre® 5790 Family
1, read the voltage at P/J93
IOT PWB.
Flag 3. +24V is
2, (65-90 ppm) PL 9.15
dis-
on the IOT PWB. The wir-
Adjustment.
2, (65-90 ppm) PL 9.15