Troubleshooting Guide
Page 102
... Problems (page 98). If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. 86 Phaser 1235 Network Color Printers If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. Paper did not enter the duplex module properly, causing a paper...[Cyan LED Error U20] [Magenta LED Error U19] [Yellow LED Error U18] Power Off/On LED Over Temperature T32 Power Off/On Fault Fault Load Tray # Size Type Power Supply Error U6 Power Off/On Fault Fault Explanation/Corrective Action Paper did not exit the transport area correctly...
... Problems (page 98). If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. 86 Phaser 1235 Network Color Printers If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. Paper did not enter the duplex module properly, causing a paper...[Cyan LED Error U20] [Magenta LED Error U19] [Yellow LED Error U18] Power Off/On LED Over Temperature T32 Power Off/On Fault Fault Load Tray # Size Type Power Supply Error U6 Power Off/On Fault Fault Explanation/Corrective Action Paper did not exit the transport area correctly...
Troubleshooting Guide
Page 104
... replaced. For further assistance, visit the support links at www.xerox.com/officeprinting/1235support. If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. 88 Phaser 1235 Network Color Printers however, some degradation of life. Close the cover so that ... The message remains until the toner cartridge is properly installed and turn on the printer. Troubleshooting Front Panel Messages (cont'd.) Message Supply Fan Error U9 Power Off/On Temp Sensor Error T29 Power Off/On Toner Empty [Black Toner Empty] [Cyan Toner Empty] [Magenta Toner...
... replaced. For further assistance, visit the support links at www.xerox.com/officeprinting/1235support. If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. 88 Phaser 1235 Network Color Printers however, some degradation of life. Close the cover so that ... The message remains until the toner cartridge is properly installed and turn on the printer. Troubleshooting Front Panel Messages (cont'd.) Message Supply Fan Error U9 Power Off/On Temp Sensor Error T29 Power Off/On Toner Empty [Black Toner Empty] [Cyan Toner Empty] [Magenta Toner...
Troubleshooting Guide
Page 110
...check the support links at www.xerox.com/officeprinting/1235support. 94 Phaser 1235 Network Color Printers Turn off the printer, wait 15 seconds, then turn on the printer. Turn off the printer, wait 15 seconds, then turn on the printer. During the printer's self diagnostics it was a problem..., check the support links at www.xerox.com/officeprinting/1235support. During the printer's self diagnostics there was detected that the power supply voltage is irregularly high. If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. If the problem ...
...check the support links at www.xerox.com/officeprinting/1235support. 94 Phaser 1235 Network Color Printers Turn off the printer, wait 15 seconds, then turn on the printer. Turn off the printer, wait 15 seconds, then turn on the printer. During the printer's self diagnostics it was a problem..., check the support links at www.xerox.com/officeprinting/1235support. During the printer's self diagnostics there was detected that the power supply voltage is irregularly high. If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. If the problem ...
Troubleshooting Guide
Page 111
... with the power supply cooling fan. Turn off the printer, wait 15 seconds, then turn on the printer. If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. If the problem persists, check the support links at www.xerox.com/officeprinting...communication path. If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. Troubleshooting Printer Management Status Messages (cont'd.) Message U8-Controller Fan Error Type Fault U9-Supply Fan Error Fault U10-Roller Position Error Fault U12-Duplex I/F Error ...
... with the power supply cooling fan. Turn off the printer, wait 15 seconds, then turn on the printer. If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. If the problem persists, check the support links at www.xerox.com/officeprinting...communication path. If the problem persists, check the support links at www.xerox.com/officeprinting/1235support. Troubleshooting Printer Management Status Messages (cont'd.) Message U8-Controller Fan Error Type Fault U9-Supply Fan Error Fault U10-Roller Position Error Fault U12-Duplex I/F Error ...
Service Guide
Page 4
...jewelry prior to the manual(s) for safe operation. To avoid personal injury, do not touch exposed connections and components while power is present. WARNING: If the product loses the ground connection, usage of rendering first aid or resuscitation is on... voltage: Protective ground (earth) terminal: Use caution. Disconnect power before removing the power supply shield, soldering, or replacing components. Use care when servicing with dangerous voltages and currents. Symbols as marked on printer model) between the supply conductors or between either supply conductor and ground.
...jewelry prior to the manual(s) for safe operation. To avoid personal injury, do not touch exposed connections and components while power is present. WARNING: If the product loses the ground connection, usage of rendering first aid or resuscitation is on... voltage: Protective ground (earth) terminal: Use caution. Disconnect power before removing the power supply shield, soldering, or replacing components. Use care when servicing with dangerous voltages and currents. Symbols as marked on printer model) between the supply conductors or between either supply conductor and ground.
Service Guide
Page 5
Contents General Information 1 The Phaser 1235 Color Printer 2 Printer RAM and printer capabilities 4 CRU life counter behavior 4 Print engine assemblies 5 The image processor board 11 The control panel 12 On Line LED 12 ! Fault 12 Rear ... self-diagnostic test 32 Print engine troubleshooting 33 Testing the print engine 33 Verifying printer operation by using its self-test print 34 Verifying power supply operation 34 Measuring power supply voltages 34 Inspecting the low-voltage power supply fuse 36 Safety interlocks 36 Testing for a shorted motor 37 Motor and fuser roller resistances 38 Media ...
Contents General Information 1 The Phaser 1235 Color Printer 2 Printer RAM and printer capabilities 4 CRU life counter behavior 4 Print engine assemblies 5 The image processor board 11 The control panel 12 On Line LED 12 ! Fault 12 Rear ... self-diagnostic test 32 Print engine troubleshooting 33 Testing the print engine 33 Verifying printer operation by using its self-test print 34 Verifying power supply operation 34 Measuring power supply voltages 34 Inspecting the low-voltage power supply fuse 36 Safety interlocks 36 Testing for a shorted motor 37 Motor and fuser roller resistances 38 Media ...
Service Guide
Page 8
... assembly 108 Electronic boards 109 System controller board 109 Print engine controller board 110 Toner sensor board 111 Entrance sensor board 113 High voltage power supply 114 Low voltage power supply 116 Control panel 117 Paper feed components 118 Tray 1 feed roller and nudger roller 118 Retard pad 119 Paper-size sensing board 120... latching handle (right) 141 Fuser exit roller 142 Exit sensor assembly 144 Duplex guide assembly 146 Eject guide assembly 148 Stack full sensor 149 viii Phaser 1235 Network Color Printer
... assembly 108 Electronic boards 109 System controller board 109 Print engine controller board 110 Toner sensor board 111 Entrance sensor board 113 High voltage power supply 114 Low voltage power supply 116 Control panel 117 Paper feed components 118 Tray 1 feed roller and nudger roller 118 Retard pad 119 Paper-size sensing board 120... latching handle (right) 141 Fuser exit roller 142 Exit sensor assembly 144 Duplex guide assembly 146 Eject guide assembly 148 Stack full sensor 149 viii Phaser 1235 Network Color Printer
Service Guide
Page 11
Removing the entrance sensor board 113 Removing the high voltage power supply 115 Removing the low voltage power supply 116 Removing the control panel 117 Removing the feed roller and nudger roller 118 Removing the retard pad 119 Removing the paper size ... transfer belt motor assembly 155 Removing the shutter plate 156 Removing the color registration sensor assembly 157 Removing the color registration solenoid 158 Removing an LED assembly 159 Removing the drum contact assembly 160 Disconnecting the LED assembly power harness 161 Removing the toner sensor actuators 162 Removing the duplex unit...
Removing the entrance sensor board 113 Removing the high voltage power supply 115 Removing the low voltage power supply 116 Removing the control panel 117 Removing the feed roller and nudger roller 118 Removing the retard pad 119 Removing the paper size ... transfer belt motor assembly 155 Removing the shutter plate 156 Removing the color registration sensor assembly 157 Removing the color registration solenoid 158 Removing an LED assembly 159 Removing the drum contact assembly 160 Disconnecting the LED assembly power harness 161 Removing the toner sensor actuators 162 Removing the duplex unit...
Service Guide
Page 32
... frequencies below 50 Hz. 15 g, trapezoidal flared pulse, 20 msec each axis. Standby: 35 dBa, Running: 55 dBa, Impulse: 57 dBa 18 Phaser 1235 Network Color Printer On five mutually perpendicular axes: 0.5 g, 25-minute sweep, 5 to 200 to 5 Hz, 100 to 15000 m (50,000 ft.) May drop... 45 watts during Energy Star state 110 VAC configuration - 8 and 10 Amp 220 VAC configuration - 4 and 5 Amp Low Voltage Power Supply +3.3 VDC + 5 V +12 V + 32 V +3.8 V High voltage Power Supply (CH) -900 to 1.4 kV (DB) -100 to 400/+300 V (SB) -200 to -700 V (TB) +1k to +7 kV (FIX) 0...
... frequencies below 50 Hz. 15 g, trapezoidal flared pulse, 20 msec each axis. Standby: 35 dBa, Running: 55 dBa, Impulse: 57 dBa 18 Phaser 1235 Network Color Printer On five mutually perpendicular axes: 0.5 g, 25-minute sweep, 5 to 200 to 5 Hz, 100 to 15000 m (50,000 ft.) May drop... 45 watts during Energy Star state 110 VAC configuration - 8 and 10 Amp 220 VAC configuration - 4 and 5 Amp Low Voltage Power Supply +3.3 VDC + 5 V +12 V + 32 V +3.8 V High voltage Power Supply (CH) -900 to 1.4 kV (DB) -100 to 400/+300 V (SB) -200 to -700 V (TB) +1k to +7 kV (FIX) 0...
Service Guide
Page 38
... contact assembly. Replace the engine controller board. 4. Remove and reinstall the fuser. 2. Replace the engine controller board. 24 Phaser 1235 Network Color Printer Test the front cover open switch using the sensor test described in "Switch scan test" on the transfer belt unit. ...side of the engine chassis. Replace the printer unit chassis EE Transfer Belt Missing Reseat Belt, Power Off/On EE-Transfer Belt Unit Missing 1. Inspect the switch's wiring harness. 5. Replace the printer unit chassis. Replace the low-voltage power supply. 4. Replace the engine controller board....
... contact assembly. Replace the engine controller board. 4. Remove and reinstall the fuser. 2. Replace the engine controller board. 24 Phaser 1235 Network Color Printer Test the front cover open switch using the sensor test described in "Switch scan test" on the transfer belt unit. ...side of the engine chassis. Replace the printer unit chassis EE Transfer Belt Missing Reseat Belt, Power Off/On EE-Transfer Belt Unit Missing 1. Inspect the switch's wiring harness. 5. Replace the printer unit chassis. Replace the low-voltage power supply. 4. Replace the engine controller board....
Service Guide
Page 40
... test described in the correct temperature environment; Replace the low-voltage power supply. 6. Replace the engine controller board. 26 Phaser 1235 Network Color Printer Replace the engine controller board. T29 Temp Sensor Error T29 Power Off/On T29-Temp Sensor Error T30 RH Sensor Error T30 Power Off/On T30-RH Sensor Error 1. Inspect the main cooling...
... test described in the correct temperature environment; Replace the low-voltage power supply. 6. Replace the engine controller board. 26 Phaser 1235 Network Color Printer Replace the engine controller board. T29 Temp Sensor Error T29 Power Off/On T29-Temp Sensor Error T30 RH Sensor Error T30 Power Off/On T30-RH Sensor Error 1. Inspect the main cooling...
Service Guide
Page 41
.... 3. Service Guide 27 Replace the fuser. 4. Turn the printer off and then on. 3. Reset the printer NVRAM using the test described in "Switch scan test" on page 63. 2. Inspect the main cooling fan. Replace the engine controller board. U6 Power Supply Error U6 Power Off/On U6-Power Supply Error 1. Inspect the sensor and its wiring harness...
.... 3. Service Guide 27 Replace the fuser. 4. Turn the printer off and then on. 3. Reset the printer NVRAM using the test described in "Switch scan test" on page 63. 2. Inspect the main cooling fan. Replace the engine controller board. U6 Power Supply Error U6 Power Off/On U6-Power Supply Error 1. Inspect the sensor and its wiring harness...
Service Guide
Page 47
... is displayed on page 71. If the printer does not power up, or does not initialize, or the printer initializes but the motors do not run properly, go to the later topic "Verifying power supply operation" on page 34. 3. Service Guide 33 If the printer does not make the test print, then ...a problem exists with the topic, "Verifying power supply operation" on page 34. If it is not, go to the cause of a printer's failure. To ensure the print ...
... is displayed on page 71. If the printer does not power up, or does not initialize, or the printer initializes but the motors do not run properly, go to the later topic "Verifying power supply operation" on page 34. 3. Service Guide 33 If the printer does not make the test print, then ...a problem exists with the topic, "Verifying power supply operation" on page 34. If it is not, go to the cause of a printer's failure. To ensure the print ...
Service Guide
Page 48
... displayed, press the Menu (1, 5) buttons to enter the menu. 4. Press the Item (2, 6) keys to the next topic "Verifying power supply operation." 2. Power supply fan: With the power switch on the printer. Otherwise, replace the power supply fan. 34 Phaser 1235 Network Color Printer If the health LED is not flashing, then the system controller board is the main fan running...
... displayed, press the Menu (1, 5) buttons to enter the menu. 4. Press the Item (2, 6) keys to the next topic "Verifying power supply operation." 2. Power supply fan: With the power switch on the printer. Otherwise, replace the power supply fan. 34 Phaser 1235 Network Color Printer If the health LED is not flashing, then the system controller board is the main fan running...
Service Guide
Page 49
...controller board.) If the voltages are not being output by the power supply, proceed to the next step, "Inspecting the low-voltage power supply fuse" on page 36. If the +5 and +32 VDC voltages measure correctly, but the printer does not operate correctly, then proceed to the CN1 connector of... the engine controller board to the topic, "Safety interlocks" on page 36. Service Guide 35 POWER Connector pinout ...
...controller board.) If the voltages are not being output by the power supply, proceed to the next step, "Inspecting the low-voltage power supply fuse" on page 36. If the +5 and +32 VDC voltages measure correctly, but the printer does not operate correctly, then proceed to the CN1 connector of... the engine controller board to the topic, "Safety interlocks" on page 36. Service Guide 35 POWER Connector pinout ...
Service Guide
Page 50
... controller board. 36 Phaser 1235 Network Color Printer The 220 VAC power supply fuse uses a 10 A fuse. 1. Inspect each switch when it . Turn off the printer. 6. Turn off the printer. 2. With a DMM set to the duplex unit and high-voltage power supply is now accessible. If no motors appear to the motors is good, but the printer's power supply does not output...
... controller board. 36 Phaser 1235 Network Color Printer The 220 VAC power supply fuse uses a 10 A fuse. 1. Inspect each switch when it . Turn off the printer. 6. Turn off the printer. 2. With a DMM set to the duplex unit and high-voltage power supply is now accessible. If no motors appear to the motors is good, but the printer's power supply does not output...
Service Guide
Page 51
Refer to the topic "Wiring Diagram" on the printer again to see the following topic). 3. Service Guide 37 Remove the top and rear covers. 2. If the power supply still does not function, replace it overloads now that locates each connector. 4. Disconnect the motor harnesses and verify motor resistances (see if it . Turn on page 215 for a shorted motor 1. Top Cover Open Switch Front Cover Open Switch Door safety interlock switches 0728-01 Testing for a diagram that the motors are disconnected from the engine driver board.
Refer to the topic "Wiring Diagram" on the printer again to see the following topic). 3. Service Guide 37 Remove the top and rear covers. 2. If the power supply still does not function, replace it overloads now that locates each connector. 4. Disconnect the motor harnesses and verify motor resistances (see if it . Turn on page 215 for a shorted motor 1. Top Cover Open Switch Front Cover Open Switch Door safety interlock switches 0728-01 Testing for a diagram that the motors are disconnected from the engine driver board.
Service Guide
Page 58
... error 1. No drum imaging unit installed 1. Is power supplied to inspect, if necessary. 3. Replace the low-voltage power supply 4. If a drum contact assembly is not damaged. Test them using service test "Switch scan test" on page 69. Replace the engine controller board. 44 Phaser 1235 Network Color Printer Cycle the printer power to ensure that each imaging drum unit...
... error 1. No drum imaging unit installed 1. Is power supplied to inspect, if necessary. 3. Replace the low-voltage power supply 4. If a drum contact assembly is not damaged. Test them using service test "Switch scan test" on page 69. Replace the engine controller board. 44 Phaser 1235 Network Color Printer Cycle the printer power to ensure that each imaging drum unit...
Service Guide
Page 59
... fuser does warm up, verify that it is turned on page 63. 5. If not, replace the power supply. Service Guide 45 Does the fuser get hot? Replace the low-voltage power supply. Does the error occur immediately after the printer is reaching the correct temperature by the fuser heaters. 6. B A B A C D E F C D ...Check that the correct AC voltage may be present at Pins 1 and 2 of fuser 0728-02 Bear in mind that AC voltage supplied to the printer is installed. These pins connect to check. If not, replace the fuser. 4. Replace the engine controller board. 7. Remove the fuser...
... fuser does warm up, verify that it is turned on page 63. 5. If not, replace the power supply. Service Guide 45 Does the fuser get hot? Replace the low-voltage power supply. Does the error occur immediately after the printer is reaching the correct temperature by the fuser heaters. 6. B A B A C D E F C D ...Check that the correct AC voltage may be present at Pins 1 and 2 of fuser 0728-02 Bear in mind that AC voltage supplied to the printer is installed. These pins connect to check. If not, replace the fuser. 4. Replace the engine controller board. 7. Remove the fuser...
Service Guide
Page 60
... connector and their corresponding receptacles on page 63. 4. Power down the printer, and remove the system controller board board. Replace the engine controller board. 5. Replace the low-voltage power supply. 46 Phaser 1235 Network Color Printer All print engine operation halts, and will now not affect...board has not successfully loaded its EEPROM contents (instructions) into RAM. Replace the fuser unit. 4. If the print engine powers up the printer. Other problems These problems may fix this problem. 2. The health indicator LED (heart beat) usually indicates such an...
... connector and their corresponding receptacles on page 63. 4. Power down the printer, and remove the system controller board board. Replace the engine controller board. 5. Replace the low-voltage power supply. 46 Phaser 1235 Network Color Printer All print engine operation halts, and will now not affect...board has not successfully loaded its EEPROM contents (instructions) into RAM. Replace the fuser unit. 4. If the print engine powers up the printer. Other problems These problems may fix this problem. 2. The health indicator LED (heart beat) usually indicates such an...