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Phaser 4400 Laser Printer Service Manual

1. Fault Error Fault Error History History Code Code 0 Fan Failure U5 6 Tray 2 3 Failure E11 1 Fuser Failure U4 7 Tray 1 Failure C3 2 Motor Failure U1 8 Tray 2 Failure C3 3 IOT NVM Failure U6 9 Tray 3 Failure C3 4 Stacker Failure E9 10 Tray 2 Failure E11 5 Laser failure U2 Fault History Codes for Jams Fault Jam Code Fault Jam Code History History Code Code 1 E7 1 12 E2 12 2 E7 2 13 E2 03 3 E7 3 14 E2 13 4 E4 0 15 E2 0E 5 E4 2 16 E2 1E 6 E4 3 17 E6 1 7 E2 0M 18 E6 2 8 E2 1M 19 PSE 1 9 E2 01 20 E3 1 10 E2 11 21 E3 2 11 E2 02 22 E7 0 2 6 Phaser 4400 Laser Printer Service Manual Service Diagnostics The printer s Service Diagnostics provide the ability to m Print the Service Diagnostics Menu Map m Check the current print engine status m Start the Engine Test Print after selecting the print quantity the source tray output tray and simplex or duplex printing m Test the functionality of printer motors and fans solenoids and clutches Em Test some portions of drive trains by engaging combinations of motors and clutches or solenoids m Test the functionality of sensors switches and options by manually toggling each sensor or installing an option m Perform NVRAM adjustments essential to the performance of the printer m Check eight different print engine components m Reset the PS NVRAM locations to factory defaults see Resetting NVRA
2. Phaser 4400 Laser Printer Service Manual 2 57 Image Processor POST Error Codes The Image Processor Power On Self Test POST detects two major types of faults m Hard faults are those that are known to prevent initialization of the operating system used by the Image Processor board CPU Soft faults are those that are not a core resource to the operating system and do not prevent it from initializing and becoming available as a tool for troubleshooting Soft faults are reported on the Startup Page after the system is running Fault Reporting Devices There are four fault presentation devices the health LED the Front Panel LED the Front Panel display and the Start Page Refer to Image Processor Board on page 1 10 for the health LED location on the Image Processor Board These devices are used only after initial tests indicate they are functioning properly For hard faults m The health LED blinks according to the fault code m The Front Panel LED blinks in unison with the health LED m The last posted message to the Front Panel display is present For soft faults m All soft faults are printed on the Start Page LED Blink Patterns For faults identified as hard faults the POST firmware blinks the Health LED ina particular pattern of short and long blinks to identify the fault A long blink is worth 5 and a short blink is worth 1 If a fault blink pattern is flashed as long long short short this is fault code 5
3. 2 36 2 37 2 37 2 38 2 43 2 39 2 40 2 51 2 41 2 42 2 52 2 45 2 48 2 49 2 11 Index of Errors cont d Front Panel Message Fan Failure Power Off Now Engine Logic Board NVRAM Failure Image Processor POST Error Codes Page Code U5 2 49 Code U6 2 50 2 58 Error Message Summaries Note The messages listed in the Diagnostic Message column appear only in Service Diagnostics while printing Engine Test Prints The code numbers in these messages also appear as part of the Help information displayed when you press i Front Panel Message Diagnostic Message Error Description Troubleshooting Procedure Jam At Tray Open Tray E2 01 Feed Jam E2 02 Paper arrives at Registration Sensor Open Tray Open Front Cover and Front Cover E2 03 too early to Clear Clear Paper Path E2 11 Feed Jam Paper does not Press i E2 12 arrive at Registration S o el pee es Open E2 13 Sensor position ray ee fo Ove within the specified 07 Page 4 19 time Jam At E2 0E Feed Jam Paper arrives at Remove Envelope Feeder Envelope Registration Sensor Open Front Cover Feeder too early Remove Feeder and Open Front Cover to Clear E2 1E Feed Jam Paper does not arrive at Registration Sensor position Clear Paper Path Go to Jam at Envelope Feeder Remove Feeder Press i within the specified and Open Front Cover on time page 2 21 Jam At MP
4. and press OK 9 3 on RRP 3 13 on 5 Press Back and select another tray size until all installed trays are tested page 6 89 page 6 42 RRP 11 19 on Does the paper size displayed on the Front page 6 139 Panel display match the size of the paper actually loaded in the tray Paper Size Actuators Actuator Cam B5 A5 13 14 8 5 A4 Extended SEF SEF SEF SEF SEF SEF Top X X Middle X X X Bottom X X Tray Failure Open and Close Tray C3 E Tray Not In A Tray Assembly Tray 1 2 or 3 is not in place Tray Failure Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Enter Service Diagnostics Go to step Go to step 2 2 Print a test print from every tray 11 Does the Error Code specify Tray 2 or Tray 3 2 Remove and reinstall Tray 1 Go to step 3 Problem Does the C3 error code still appear solved 3 Measure the voltage from the lower contact of the Go to step 8 Goto step 4 Feeder Socket P J672 to frame ground Is the voltage 24 VDC 4 Measure the voltage from P J33 pin 6 on the Engine Go to step 5 Goto DC Logic Board to frame ground Power Is the voltage 24 VDC LVPS an page 3 4 5 1 Switch off the printer power Go to step 6 Repair or 2 Remove the Size Sensor Housing RRP 3 11 on replace page 6 40 Feeder 3 Measure continuity between the disconnected P J33 Harness pin 6 and P J331 pin 12 on the Tray 1 Size PWB A ae
5. RRP 5 2 on page 6 59 4 On the Connector PWB check the voltage between Replace the Check the P J231 pin 11 and pin 12 Connector Connector PWB RRP Harness Is the voltage 24 VDC7 9 7 0n Assembly If page 6 94 OK replace the Engine Logic Board RRP 9 3 on page 6 89 5 On the connector PWB check the voltage between Check the Replace the P J231 pin 9 and frame ground Connector Connector Harness PWB RRP Is the voltage 0 0 VDC with the print cartridge A bly If 9 7 installed and 3 3 VDC with the print cartridge SS9m9 y on removed OK replace page 6 94 the Engine Logic Board RRP 9 3 on page 6 89 2 34 Phaser 4400 Laser Printer Service Manual Toner is Low J5 Toner Low The Print Cartridge is almost empty Print Cartridge Low Toner Troubleshooting Procedure Step Actions and Questions Yes No 1 Install a new Print Cartridge Go to step 2 Problem Does the Replace Print Cartridge message still solved appear 2 1 Remove the Front Cover RRP 1 6 on page 6 11 and Go to step 5 Goto step 3 the Left Front Cover RRP 1 7 on page 6 12 2 Cheat the Front Cover Interlock Switch 3 On the Connector PWB check the voltage between P J42 pin 4 and frame ground Is the voltage 0 0 VDC with the print cartridge installed and 3 3 VDC with the print cartridge removed 3 Check the voltage between P J42 pin 3 and pin 1 Replace the Go to step 4 Toner Sensor Is the voltage 24 VDC RRP 5 2 on p
6. ssembly Is there continuity between the two pins PL 9 1 on page 7 22 Phaser 4400 Laser Printer Service Manual 2 43 Tray Failure Troubleshooting Procedure cont d Step Actions and Questions Yes No 6 On the Tray 1 Size PWB measure continuity between Go to step 7 Replace the P J331 pin 12 to P J61 pin 1 Tray 1 Size Is there continuity between the two pins oe page 6 42 7 Check the wiring between P J67 pin 5 on the Tray 1 Replace the Replace the Feeder PWB and the bottom pin on the Paper Feeder Tray 1 Socket and Socket P J672 Feeder PWB Harness PL paren tion RRP 3 90n 3 1 on Is the wiring in good condition page 6 37 page 7 10 8 On the paper tray measure the resistance between the Go to step 9 Go to Tray middle and bottom terminals on the Paper Feeder Motor Socket Assembly Is the resistance 90 15 ohms Cneckonton page 3 26 9 On the paper tray measure the resistance between the Go to step Replace the top and bottom terminals on the Paper Feeder Socket 10 Socket and an Harness PL Is there continuity between the two pins a4 on page 7 10 10 Replace the following parts one at a time until the problem is resolved m Stack Height Sensor RRP 3 4 on page 6 31 m Feeder PWB RRP 3 9 on page 6 37 m Size 1 PWB RRP 3 13 on page 6 42 m Engine Logic Board RRP 9 3 on page 6 89 11 Remove and reinstall the Tray indicated Go to step Problem Does the C3 error code still appear 12 sol
7. 5 1 1 12 Note that for test 5 the blink pattern is five short blinks The exception to the pattern just described is a RAM test error The RAM tests have a special blink pattern and the front panel displays RAM Error During power on the front panel LED is on If the RAM tests fail the Image Processor Board health LED turns off and the front panel LED is red At 1 2 second intervals the health LED and the front panel LED toggle continuously 2 58 Phaser 4400 Laser Printer Service Manual POST Error Code Table LED Blink Front Panel Comment Code Message 1 1 2 I O ASIC Image Processor Board ASIC failure Go to Image Processor Isolation on page 3 31 1 1 1 3 LOCAL BUS Image Processor Board ASIC failure Go to Image BRIDGE FRONT Processor Isolation on page 3 31 PANEL 1 1 1 1 1 5 Please Install 1 Switch off printer power Configuration 2 Remove and re install the Configuration Chip Chip 3 Switch on printer power 4 If the error message persists first replace the Configuration Chip then the Image Processor Board 5 5 10 EEPROM 1 Switch off printer power 2 Remove and re install the NVRAM EEPROM 3 Switch on printer power 4 If the error message persists first replace the NVRAM EEPROM then the Image Processor Board RRP 9 2 on page 6 88 5 5 1 11 ETHERNET Image Processor parallel port failure USB port failure PHY E Net Port Failure Replace Image Processor
8. No 1 Does the problem appear when using Tray 1 2 Goto step 2 Go to step 3 or 3 2 1 Verify the size of paper currently in the MPT Tray Replace the Set MPT size 2 Select Menus and press OK then Engine Logic to the size of 3 Select Printer Setup Menu and press OK Board RRP paper actually 4 Select Tray Setup Menu and press OK 9 3 on installed then 5 Select MPT Setup Menu and press OK page 6 89 press OK Does the paper size checked in the MPT Setup Menu match the size actually in the MPT 3 Is the paper size in the problem tray within Go to step 4 Replace with printer specifications paper that meets specifications 4 Check the side guides and the Paper Stack End Guide Go to step 5 Properly set in the problem tray the guides Are all guides properly set for the size of paper installed 5 Check the size cam on the left side of the paper tray Go to step 6 Replace the see the Paper Size Actuators table below paper tray PL Are the cams in good condition not broken and al E 6 PL do they move freely as the paper tray end guide page is moved 11 1 on page 7 26 2 42 Phaser 4400 Laser Printer Service Manual Paper Size Error Troubleshooting Procedure cont d Step Actions and Questions Yes No 6 1 Reinstall the paper tray Replace the Replace the 2 Enter Service Diagnostics and select Sensor Tests Engine Logic Tray Size 3 Scroll to Paper Tray Size Read and press OK Board RRP PWB 4 Select Tray 1 Size
9. Paper Sensor Tray 2 Low Paper Sensor Tray 3 Low Paper Sensor Tray 1 No Paper Sensor Tray 2 No Paper Sensor Tray 3 No Paper Sensor MPT No Paper Sensor Envelope Feeder No Paper Sensor Envelope Feeder Presence Duplex Unit Presence Stacker Unit Presence PHASER 4400N PRINTER Service Diagnostics Menu Map Solenoid Tests Test the functionality of printer solenoids MPT Solenoid Stacker Direction Solenoid Clutch tests Test the functionality of printer clutches Registration Clutch Tray 1 Feed Clutch Tray 2 Feed Clutch Tray 3 Feed Clutch Tray 1 Turn Roll Clutch Tray 2 Turn Roll Clutch Tray 3 Turn Roll Clutch Envelope Feeder Clutch Engine NVRAM Adjustments Perform NVRAM adjustments essential to the performance of the printer Laser Power Setting MPT Paper Size Adjustment Envelope Paper Size Adjustment Tray 1 Process Direction Tray 2 Process Direction Tray 3 Process Direction Envelope Feeder Process Direction MPT Process Direction Tray 1 Scan Direction Tray 2 Scan Direction Tray 3 Scan Direction Envelope Feeder Scan Direction MPT Scan Direction Duplex Process Direction Duplex Scan Direction Component Checks Laser Diode Detack Saw Output Transfer Roll Transfer Roll Developer Bias AC Developer Bias DC Charge Roll AC Charge Roll DC NVRAM Access This menu lets you reset the PS NVRAM locations to factory defaults PostScript NVRAM Reset Exit R eboots Printer out of Diagnostics For Ser
10. Power Off Laser Failure at warm up m Transmitting BD signal is longer than specified value for 10 sec t1 m The laser power does not reach the specified value Laser Failure after warm up E Laser signal intervals become longer than the Fail time interval after Laser warm up is completed Laser Failure Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Enter Service Diagnostics and Go to step 2 Setthe value 2 Select Engine NVRAM Adjustments to 10 If the 3 Scroll to Laser Power and press OK problem Is the value for Laser Power set to 10 persists replace the Engine Logic Board RRP 9 3 page 6 89 2 Select Motors Fans Tests then Laser Scan Motor Go to step 3 Goto Laser Can you hear the Laser Scan Motor spin up Assembly an y page 3 17 3 1 Switch the printer power OFF Go to Laser Go to step 4 2 Remove the Left Interface Cover RRP 1 1 on Assembly on page 6 6 the Left Cover RRP 1 2 on page 6 7 and page 3 17 the Left Plate RRP 1 11 on page 6 16 3 Disconnect P J21 from the Engine Logic Board Switch the printer power on 4 On the Engine Logic Board check the voltage between P21 6 and frame ground Is the voltage 5 0 VDC 4 On the Engine Logic Board check the voltage between Go to step 6 Go to step 5 P25 pin 4 and frame ground Is the voltage 5 0 VDC 5 On the Engine Logic Board check the voltage between Replace the Replace the P28 pin 7 and frame ground Eng
11. Replace the 2 Select Duplex Sensor Registration Duplex 3 Open the Rear Cover and use a narrow strip of paper Sensor on Sensor RRP e wide to actuate and deactuate page 3 20 to 12 13 on E test the age 6 155 Does the message on the display alternate Registration ifthe between With Paper and Without Paper as Sensor problem you press and release the actuator persists replace the Engine Logic Board RRP 9 3 on page 6 89 6 1 Remove the Duplex Unit then remove the Duplex Replace the Replace the Cover RRP 12 3 on page 6 143 Duplex PWB Duplex Motor 2 Disconnect P J38 from the Duplex PWB RRP 12 4 Assembly 3 Measure the resistance on the disconnected plug on RRP 12 8 between pin 1 and pin 2 between pin 1 and pin 3 age 6 144 on between pin 1 and pin 4 and between pin 1 and pin 5 ar page 6 149 Are all four readings between 30 and 37 ohms problem persists replace the Engine Logic Board RRP 9 3 on page 6 89 Paper Size Jam Check Size and Open Rear Cover to Clear PSE 1 PSE 1 Paper size error There is a conflict between the size of the paper detected by the printer and the length of time the Registration Sensor is actuated Paper Size Error Troubleshooting Procedure Step Actions and Questions Yes No 1 Does the problem appear when using Tray 1 2 Go to step 3 Go to step 2 or 3 2 1 Verify the size of paper currently in the MPT Tray Replace the Set MPT size 2 Select Menus a
12. Wiring Diagrams and Plug Jack Locator to locate test points Take voltage readings at various test points as instructed in the appropriate troubleshooting procedure Use the Engine Logic Board Test Print on page 3 49 to isolate print capability problems between the print engine the Image Processor Board o AON Step 4 Correct the Problem 1 Use the Parts List to locate a part number 2 Use the Removal and Replacement Procedures to replace the part Step 5 Final Checkout 1 Test the printer to be sure you have corrected the initial problem and there are no additional problems present 2 2 Phaser 4400 Laser Printer Service Manual Service Technician Cautionary Statements Always turn off the printer and remove the AC power cord unless instructed to do otherwise in a procedure This is particularly important when checking continuity between wiring If the printer is kept ON never touch the conductive parts m Wear an electrostatic discharge wrist strap to help prevent damage to the sensitive electronics on the printer circuit boards Wait at least 5 minutes after you have switched OFF the printer power for the Fuser to cool before you work on or around the Fuser If checking a specific part with the covers removed and the interlocks safety and power switches ON laser beams may be irradiated from the Laser Unit causing a health hazard Observe proper precautions at all times When using service diagn
13. a test print from Tray 2 3 Flowchart and Does the error message reappear restart 9 Remove Tray 2 3 from the printer Go to step 10 Go to Tray Remove all paper from the tray Reinsert Motor Assembly the Tray into the printer From the rear of Checkout on the printer watch the tray bottom plate page 3 26 Is the Bottom Plate raised fully and evenly Phaser 4400 Laser Printer Service Manual 2 41 Tray Empty Troubleshooting Procedure cont d Step Actions and Questions Yes No 10 1 Remove Tray 2 3 Go to step 11 Replace the 2 Manually actuate the No Paper Sensor Tray 2 3 No Does the No Paper Actuator move Paper Actuator smoothly RRP 11 7 on page 6 126 11 1 Enter Service Diagnostics and select Replace the Replace the Sensor Tests Engine Logic following in 2 Scroll to Tray 2 No Paper or Tray 3No Board RRP9 30n order for the Paper and press OK a 3 Manually actuate the Tray 2 3 No Paper page 6 89 AEA ede Sensor y Does the message on the display oe tee alternate between With paper and R z 6 128 Without paper as you press and E S PWB release the actuator RRP 11 19 on page 6 139 Load Tray with paper size paper type There is a conflict between the size of the paper detected by the Size Switches and the length of paper detected by the length of time the Registration Sensor is actuated Paper Size Error Troubleshooting Procedure Step Actions and Questions Yes
14. at MPT Open Front Cover to Clear Jam at Front Open Front Cover to Clear Jam At Exit Open Rear Cover To Clear Jam at Stacker Open Both Rear Covers to Clear Jam at Front Rear Open Front Rear Cover to Clear Code Jam E2 E Code Jam E2 0M Code Jam E2 1M Code Jam E3 Code Jam E4 0 Code Jam E4 2 Code Jam E4 3 Code Jam E6 Code Jam E7 1 Code Jam E7 2 Code Jam E7 3 Paper Size Jam Check Size and Open Rear Cover to Clear PSE 1 Door and Cover Errors Close Front Cover Close Rear Cover Consumable Errors Install or Reseat Print Cartridge Replace Print Cartridge Toner is Low Maintenance Kit is Near End of Life Printer Option Errors Install or Reseat the Duplex Unit Stacker Failure Install or Reseat the Envelope Feeder Tray and Media Errors Standard Output Tray is Full Unload Paper Tray Failure Open and Close Tray Tray Paper is Low Tray 2 or Tray 3 Paper is Low Load MPT with paper size paper type No Paper in Tray Media Mismatch Errors Load Tray with paper size paper type Front Panel Fatal Error Messages and Codes Tray 2 or 3 Failure Main Motor Failure Laser Unit Failure Fuser Failure Phaser 4400 Laser Printer Service Manual Code Jam PSE 1 Code E9 1 Code E9 2 Code E9 E C3 JE Code E11 Code U1 Code U2 Code U4 Page 2 18 2 21 2 22 2 23 2 25 2 27 2 29 2 30 2 31 2 33 2 34 2 35 2 36
15. installed trays are tested RRP 11 19 on Does the paper size displayed on the Front page 6 139 Panel display match the size of the paper actually loaded in the tray Close Front Cover Close Rear Cover Close Front Cover Close Rear Cover Close Front Rear Cover Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Open and close the Front Cover Go to step 2 Replace the 2 Inspect the movement of the Interlock Switch Front Cover Does the actuator tab on the Front Cover press Assembly down on the Interlock Switch lever PL 1 1 on page 7 2 2 1 Open and close the Rear Cover Go to step 3 Replace the 2 Inspect the movement of the Interlock Switch Rear Cover Does the actuator tab on the Rear Cover press Assembly down on the Interlock Switch lever PL 1 2 on page 7 4 3 1 Enter Service Diagnostics and select Sensor Tests Go to step 5 Goto step 4 2 Scroll to Rear Cover Switch test and press OK 3 Open and close the Rear Cover Does the message on the display alternate between Closed and Open as you open and close the Rear Cover Phaser 4400 Laser Printer Service Manual 2 31 Close Front Rear Cover Troubleshooting Procedure cont d Step Actions and Questions Yes No 4 1 Switch the printer power OFF Replace the Check the 2 Remove the Left Interface Cover RRP 1 1 on Engine Logic wiring be page 6 6 Left Cover RRP 1 2 on page 6 7 andthe Board RRP tween P J30 Left Plate
16. second interval Phaser 4400 Laser Printer Service Manual 2 59 Start page Soft Fault Messages The soft faults that are set by POST diagnostics will print a message on the Start Page in a gray box The box is large enough to contain all the soft faults encountered with the upper left corner of the box in the center of the Start Page and extending to the right margin similar to the one shown here The following messages are substituted for lt device gt Real Time Clock for POST_DEV_RTC Ram Memory Slot 1 Checksum for POST_DEV_DIMM Ram Memory Slot 2 Checksum for POST_DEV_DIMM Ram Memory Slot 1 Rejected for POST_DEV_DIMM Ram Memory Slot 2 Rejected for POST_DEV_DIMM IDE Disk for POST_DEV_IDEOPT Parallel Port for POST_DEV_CENT 15 RAM DIMM RAM Error RAM DIMM Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Switch the printer power OFF Go to step 2 Problem 2 Remove the Left Interface Cover RRP 1 1 on solved page 6 6 3 Remove and re install the RAM DIMM s 4 Switch the printer power on Does the error code reappear 2 Does the RAM DIMM meet the specifications Go to step 3 Install a new listed on page 1 3 RAM DIMM PL 10 1 Electrical on page 7 24 3 Does the RAM function correctly Problem Install a new solved RAM DIMM PL 10 1 Electrical on page 7 24 2 60 Phaser 4400 Laser Printer Service Manual
17. 2 Check all paper paths for contamination paper or Go to step 3 Remove con other obstructions tamination or Are all paper paths clean and free of obstructions obstructions 3 1 Enter Service Diagnostics and select Test Print Go to step 9 Goto step 4 2 Run five prints from every paper tray Does the problem appear when printing from Tray 2 or 3 4 1 Remove Tray 1 from the printer Go to step 5 Clean or 2 Check the Nudger Roller Feed Roller and Retard replace the Roller for contamination and wear Nudger Feed Are all rolls clean and in good condition or Retard Roller as necessary RRP 3 8 on page 6 36 RRP 2 1 on page 6 18 5 1 Reinsert Tray 1 into the printer Go to step 6 Go to Tray 2 From the rear of the printer watch the Tray 1 Bottom Motor Plate Assembly Is the Bottom Plate raised fully and evenly Checkout on page 3 26 6 From the rear of the printer watch the paper feed as Go to step 7 Goto Tray 1 you print a test print from Tray 1 Feed Clutch Do the Nudger Roller and Feed Roller rotate on page 3 29 7 Is paper fed from the tray to the Turn Roller Go to step 8 Replace the Assembly Retard Nudger and Feed Rollers RRP 2 1 on page 6 18 and RRP 3 8 on page 6 36 2 18 Phaser 4400 Laser Printer Service Manual Paper Jam Misfeed Troubleshooting Procedure cont d Step Actions and Questions Yes No 8 Does the Turn Roller Assembly move the paper Go to Go to Turn to the Registration S
18. 24 VDC page 6 89 2 32 Phaser 4400 Laser Printer Service Manual Install or Reseat Print Cartridge J3 Missing Print Cartridge 1 Print Cartridge is not installed or seated correctly 2 The installed Print Cartridge is not the correct one Print Cartridge Installation Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Open the Front Cover and remove the Print Go to step 2 Replace the Cartridge Print 2 Inspect the tab on the top center of the Print Cartridge Cartridge PL that actuates the Print Cartridge Sensor Assembly 8 1 on Is the tab on the Print Cartridge intact page 7 20 2 Press and release the Print Cartridge Sensor Assembly Go to step 3 Replace the Actuator Print Does the Print Cartridge Sensor Assembly alei Actuator move smoothly engor Assembly RRP 7 3 on page 6 81 3 1 Enter Service Diagnostics and select Sensor Tests Replace the Go to step 4 2 Scroll to Print Cartridge Sensor test and press OK Engine Logic 3 Insert and remove the Print Cartridge a few times Board RRP Does the display alternate between Not 9 3 on Installed and Installed as you remove and page 6 89 replace the Print Cartridge 4 1 Switch the printer power OFF Replace the Go to step 5 2 Remove the Left Interface Cover RRP 1 1 on Engine Logic page 6 6 the Left Cover RRP 1 2 on page 6 7 and Board RRP the Left Plate RRP 1 11 on page 6 16 9 3 on 3 Install the Print Cartridge Lea
19. 29 Jam At Rear E7 1 Duplex Jam Paper late to Duplex Open Rear Cover Open Rear Sensor Cover To Clear Press i E7 2 Duplex Jam 1 Paper late off Duplex Sensor 2 Duplex Sensor on at power up E7 3 Duplex Jam Paper late to Registration Sensor from Duplex Sensor Remove Duplex Unit Clear paper path Go to Jam at Front Rear Open Front Rear Cover to Clear on page 2 29 Tray Failure Open and Close Tray C3 E Tray Not In m Tray is not detected m Tray motor failure m Harness problem m Stack height sensor Inspect and repair Tray Tray Failure Open and Close Tray on page 2 43 Press i failure No Load Envelope Feeder Envelope Feeder is Load Paper into Envelope Paper In Empty out of paper Feeder ae Go to Load Envelope seger Feeder with paper size Press i paper type on page 2 55 Load MPT MPT Paper Empty MPT is out of paper Load paper into MPT Go to Load MPT with paper size paper type on page 2 51 Stacker Is Full Unload Paper Stacker Output Tray Full Several prints are delivered to the top tray after the Stacker Empty Stacker Tray Go to Stacker is Full Pressi Full Stack Sensor is aie ig me actuated pag i Standard Output Output Tray Full Top Tray is declared Empty Top Tray Tray is Full full when several Unload Paper Press i prints are delivered to the top tray after the Ful
20. 5 pin 1 and frame Replace the Replace the ground MPT No Engine Logic Paper Board RRP Is the voltage 1 2 0 1 VDC Sensor RRP 9 3 on 4 8 page 6 89 page 6 53 Phaser 4400 Laser Printer Service Manual 2 51 Tray 2 or 3 Failure E11 Tray 2 3 Fail Tray 2 or 3 disconnected after power on Controller does not recognize the Feeder Assembly Tray 2 or 3 Failure Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Check the alignment of the printer to the 550 Sheet Go to step 2 Reseat the Feeder and the alignment of the top 550 Sheet feeders and Feeder to the second 550 Sheet Feeder if installed printer to 2 Ensure that the connectors are properly aligned and obtain proper properly connected alignment Are all connectors properly aligned and and connected connection 2 1 Switch the printer power OFF Go to step Go to step 3 2 Remove the Left Interface Cover RRP 1 1 on 10 page 6 6 Left Cover RRP 1 2 on page 6 7 and the Left Plate RRP 1 11 on page 6 16 3 Switch the printer power on 4 On the Engine Logic Board check the voltage between P J33 pin 13 and frame ground Is the voltage 24 VDC 3 On the Engine Logic Board check the voltage between Gotostep4 Replace the P J33 pin 6 and frame ground Engine Logic Is the voltage 24 VDC Board RRP 9 3 on page 6 89 4 1 Remove Paper Tray 2 Go to step 8 Go to step 5 2 Check the voltage between the bottom terminal on the ma
21. Board RRP 9 2 on page 6 88 5 5 1 1 12 CPU Go to Image Processor Isolation on page 3 31 INTERRUPTS 5 5 1 1 1 13 USB Image Processor parallel port failure USB port failure E Net Port Failure Replace Image Processor Board RRP 9 2 on page 6 88 5 5 1 1 1 1 14 REAL TIME image Processor Board Timer failure Go to Image CLOCK Processor Isolation on page 3 31 5 5 5 15 RAM DIMM RAM DIMM failure Go to 15 RAM DIMM RAM Error on page 2 60 5 5 5 1 16 RAM LIMIT image Processor Board Timer failure Go to Image Processor Isolation on page 3 31 5 5 5 1 1 1 18 L2 CACHE Image Processor Board Timer failure Go to Image TEST Processor Isolation on page 3 31 5 5 5 1 1 1 1 19 PCI BRIDGE Image Processor Board Timer failure Go to Image Processor Isolation on page 3 31 5 5 5 5 20 IDE DISK Hard disk failure Replace the Hard Disk PL 10 1 on page 7 24 Replace the Image Processor Board RRP 9 2 on page 6 88 5 5 5 5 1 21 PARALLEL Image Processor parallel port failure USB port failure PORT E Net Port Failure Image Processor Board Timer failure Go to Image Processor Isolation on page 3 31 5 5 5 5 1 1 22 ENGINE Image Processor Board Timer failure Go to Image COMMAND Processor Isolation on page 3 31 5 5 5 5 1 1 1 23 VIDEO DMA Image Processor Xerox Image Enhanced VDMA failure TEST Image Processor Board Timer failure Go to Image Processor Isolation on page 3 31 Continuous 1 2 RAM Error Go to 15 RAM DIMM RAM Error on page 2 60
22. Error Messages and Codes Section Contents IntrOGUCHIONN 2c ccnctneeese tei ees Gecb sete ra eT OENE 2 1 SSWICE FOWGNAiteasd Bae pdatiow naire dat Shinde da wmarha datecode mbes 2 2 Service Technician Cautionary Statements 00000000 2 3 Procedo Skeren monna aah a e arias oaernar REENE ome nersehers 2 3 V ltage Measurements sis sciceteriandew bees reii a ia 2 4 Using Fault Histo iesire Dele ana ne abner onde A R A a 2 5 Service Diagnostics asssasussannrananrrannnnnnnrnnnnnnna 2 7 En tenng Service Diagnosis ssrrnrririi rt ieai eaaa abe weed 2 7 Seice Diagnostics MENU Mapes rcri scrii nae dl ace gaat a Ra a aa 2 8 Using the Front Panel with Service Diagnostics 0 2 9 E gine Test PANE pe resins estas elegans ee ern ct dus spa E E N lav 2 10 Engine NVRAM Default SettingS 6206 scccccceesdcpeas ide iminwe goede 2 10 Printer Error Messages cc cccccccctecetansecaeneeneeee ones ace eke 2 11 WIRE OXI OR EGRONS anean ts apna E ner aye Mina OEE RE ease 2 11 Error Message SummMarieS 222 2 sare sud cad cad daa ban dd ER E 2 12 Image Processor POST Error Codes 002 cece cece eee eens 2 58 Fault Reporting DeViCeS a c5 0si0dhwseeresaceea de yada owe eelans nina 2 58 Introduction This section covers troubleshooting procedures for the Phaser 4400 Laser Printer s front panel error messages Only jams and fatal errors will produce an associated numeric code Error messages and codes are u
23. M on page 4 7 Entering Service Diagnostics To enter Service Diagnostics While turning on power press and hold Back Info until the message Entering Service Diagnostics appears on the display then release the keys The Service Diagnostics Menu appears The Service Diagnostic menu has the following selections General Status Provides current print engine status Engine Test Print Starts the test print Motors Fans Tests Tests the functionality of the printer Motors Fan Main Motor Clutches Sol Tests Tests the functionality of the main motor plus clutches or Solenoid at the same time Sensor Tests Tests the functionality of sensors switches or the presence of options by manually toggling each sensor or installing an option Some of the sensor tests require cheating the front and or rear door interlocks Note The Service Diagnostics Sensor Tests do not include a check of the Tray Stack Height Sensor Refer to the Stack Height Sensor Checkout on page 3 23 Solenoid Tests Tests the functionality of printer solenoids Clutch Tests Tests the functionality of printer clutches Engine NVRAM Adjustments Perform NVRAM adjustments essential to the performance of the printer Phaser 4400 Laser Printer Service Manual 2 7 Component Checks Tests print engine component functions NVRAM Access Lets you reset the PS NVRAM locations to factory defaults Exit Reboots the Printer out o
24. RRP 1 11 on page 6 16 9 3 on and the Rear 3 Disconnect P J30 from the Engine Logic Board age 6 89 Cover Inter 4 Measure the resistance between pins 1 and 2 on the pag VET AINET disconnected plug as you open and close the Rear lock Switch Cover Repair or re Is there continuity when the Rear Cover is ea ie closed and infinity when the Rear Cover is ck switch open RRP 9 10 on page 6 97 as required 5 Open and close the Front Cover Replace the Go to step 6 Does the message on the display alternate Sey aoe between Closed and Open as you open and Board close the Front Cover 9 3 on page 6 89 6 1 Switch the printer power OFF Go to step 7 Check the 2 Remove the Left Interface Cover RRP 1 1 on wiring page 6 6 Left Cover RRP 1 2 on page 6 7 and the between Left Plate RRP 1 11 on page 6 16 P J284 and 3 Disconnect P J284 from the LVPS PWB the Front 4 Measure the resistance between pins 1 and 2 on the disconnected plug as you open and close the Front Cover Cover Interlock ee z Switch Is there continuity when the Front Cover is Repair or closed and infinity when the Front Cover is ee the open wiring or interlock switch RRP 9 9 on page 6 96 as required 7 1 Connect P J284 to the LVPS Replace the Replace the 2 Switch the printer power on Engine Logic LVPS RRP 3 On the Engine Logic Board check the voltage Board RRP 9 5 on between P J28 pin 1 and frame ground 9 3 on page 6 91 Is the voltage
25. Step Actions and Questions Yes No 1 Does the problem appear when Go to step 7 Go to step 2 using Tray 2 or Tray 3 2 Check the paper level in Tray 1 Go to step 3 Load paper into Is there paper in Tray 1 Mays 3 1 Enter Service Diagnostics and select Go to step 4 Return to Test Print Service 2 Print a test print from Tray 1 Flowchart and Does the error message reappear restart 4 1 Remove Tray 1 from the printer Go to step 5 Go to Tray 2 Remove all paper from the tray Motor Assembly 3 Reinsert Tray 1 into the printer Checkout on 4 From the rear of the printer watch the z Tray 1 bottom plate page 3 26 Is the Bottom Plate is raised fully and evenly 5 1 Remove Tray 1 Go to step 6 Replace the 2 Manually actuate the Tray 1 No Paper Tray 1 No Paper sensor Actuator RRP Does the No Paper Actuator move 3 3 on smoothly page 6 30 6 1 Enter Service Diagnostics and select Replace the Go to Tray 1 No Sensor Tests Engine Logic Paper Sensor 2 Scroll to Tray 1 No Paper and press Board RRP 9 30n on page 3 22 OK page 6 89 3 Manually actuate the Tray 1 No Paper i Sensor Does the message on the display alternate between With paper and Without paper as you press and release the actuator 7 Check the paper level in Tray 2 3 Go to step 8 Load paper into Is there paper in the tray Tray 2 3 8 1 Enter Service Diagnostics and select Go to step 9 Return to Test Print Service 2 Print
26. T E2 0M Feed Jam Paper arrives at Open Front Cover and Open Front Registration Sensor remove paper Cover To Clear too early Go to Jam at MPT Open Press i E2 1M Feed Jam Paper does not Front Cover to Clear on arrive at REG page 2 22 Sensor position within the specified time 2 12 Phaser 4400 Laser Printer Service Manual Error Message Summaries cont d Note The messages listed in the Diagnostic Message column appear only in Service Diagnostics while printing Engine Test Prints The code numbers in these messages also appear as part of the Help information displayed when you press i Front Panel Message Diagnostic Message Error Description Troubleshooting Procedure Jam at Front Open Front Cover to Clear E3 1 Registration Jam Paper Late to Fuser sensor after arrival at Registration Sensor Open Front Cover Remove Print Cartridge Clear Paper Path Press i Exit Sensor did not actuate within time Go to Jam at Front Open after the Registration Front Cover to Clear on clutch is actuated page 2 23 E3 2 Registration 1 Registration Jam Sensor did not deactuate within time after actuation of Registration sensor 2 Registration Sensor is actuated at power on Jam At Exit E4 0 Exit Jam Paper leaves Exit Open Rear Cover Open Rear Sensor early Cover To Clear Clear Paper Path p A E4 2 Exit Jam 1 Paper late off Exit Go to Jam At Exi
27. age 6 59 4 On the Connector PWB check the voltage between Replace the Check the P J231 pin 11 and pin 12 Connector Connector PWB RRP Harness Is the voltage 24 VDC7 97 on Assembly If page 6 94 OK replace the Engine Logic Board RRP 9 3 on page 6 89 5 On the connector PWB check the voltage between Check the Replace the P J231 pin 9 and frame ground Connector Connector Is the voltage 0 0 VDC with the print cartridge Agena If oe RRP installed and 3 3 VDC with the print cartridge ssem9 y eon removed OK replace page 6 94 the Engine Logic Board RRP 9 3 on page 6 89 Phaser 4400 Laser Printer Service Manual 2 35 Maintenance Kit is Near End of Life Indicates that the parts that make up the Maintenance Kit Fuser Transfer Roller Feed and Retard Rollers are nearing the end of their rated useful life Maintenance Kit Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Install the Maintenance Kit in accordance with the Go to step 2 Problem instructions included with it solved Does the warning message reappear 2 Perform the Fuser Reset Go to step 3 Problem Does the warning message continue to appear solved 3 Replace the following in order m Engine Logic Board RRP 9 3 on page 6 89 m Image Processor Board RRP 9 2 on page 6 88 m Front Panel RRP x x on page 6 14 Install or Reseat the Duplex Unit E9 1 Duplex Unit Fail Duplex Unit was removed while powe
28. blem is resolved m Stack Height Sensor RRP 11 13 on page 6 132 m Feeder PWB RRP 11 9 on page 6 128 m Size PWB RRP 11 19 on page 6 139 m Engine Logic Board RRP 9 3 on page 6 89 19 Remove the tray now occupying the Tray 1 position and continue with Tray Motor Assembly Checkout on page 3 26 Main Motor Failure U1 Motor Fail Power Off Main Motor speed is less than specified RPM after 1 3 seconds There is a problem with the Main Motor Main Motor Failure Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Switch the printer power OFF Go to step 5 Goto step 2 2 Remove the Left Interface Cover RRP 1 1 on page 6 6 the Left Cover RRP 1 2 on page 6 7 and the Left Plate RRP 1 11 on page 6 16 3 Open the Rear Cover and if installed remove the Duplex Unit 4 Manually rotate the rotor of the Main Motor clockwise as viewed from the left side of the printer Does the rotor of the Main Motor rotate smoothly 2 1 Open the Front Cover and remove Print Cartridge Replace the Go to step 3 2 Manually rotate the rotor of motor clockwise Print Does the rotor of the Main Motor rotate Cartridge smoothly Phaser 4400 Laser Printer Service Manual 2 45 Main Motor Failure Troubleshooting Procedure cont d Step Actions and Questions Yes No 3 1 Remove the Fuser Assembly RRP 6 2 on Replace the Go to step 4 page 6 66 Fuser 2 Manually rotate the rotor of
29. contamina in the Does it operate correctly tion obstruc checkout tions broken procedure or deformed parts Replace the paper tray if necessary PL 2 1 on page 7 6 19 Perform Tray Motor Assembly Checkout on page 3 26 Check the Follow the to check the tray motor paper tray for repair advice z contamina in the Does it operate correctly tion obstruc checkout tions broken procedure or deformed parts Replace the paper tray if necessary PL 2 1 on page 7 6 20 Replace the Feeder PWB RRP 11 9 on page 6 128 If the problem persists replace in this order m Size PWB RRP 11 19 on page 6 139 m Engine Logic Board RRP 9 3 on page 6 89 2 20 Phaser 4400 Laser Printer Service Manual Jam at Envelope Feeder Remove Feeder and Open Front Cover E2 E Feed Jam E2 0E Paper arrives at Registration Sensor too early E2 1E Paper does not arrive at Registration Sensor position within a specified time Envelope Feeder Jam Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Remove all envelopes Go to step 2 Clean feeder 2 Check the Envelope Feeder and Printer for and remove contamination paper scraps or other obstructions all Is the printer and Envelope Feeder clean and obstructions free of obstructions 2 Check the Feed Belts Check for dirt or contamination Go to step 3 Replace the on the top side and the under side of the belt Feed Belts RRP 13 17 Are both si
30. d remove the Replace the Go to step 5 Envelope Feeder Envelope 2 Check for continuity between J418 Envelope Feeder PWB Connector Assembly and P J23 Pin 3 on the Engine RRP 13 3 on Logic Board page 6 159 Is there continuity between the pins If the problem persists replace the Envelope Feeder No Paper Sensor RRP 13 10 on page 6 166 5 1 Remove the Front Cover RRP 1 6 on page 6 11 Replace the Check the and the Left Front Cover RRP 1 7 on page 6 12 Envelope Connector 2 Check for continuity between P J41 Pin 5 on the Connector Harness Connector PWB and P J23 Pin 3 on the Engine Logic Assembly Assembly for Board RRP 4 10 on proper Is there continuity between the pins page 6 56 connection and for defective wires Repair or replace if necessary If Harness is in good condition replace the Connector PWB RRP 9 7 on page 6 94 2 56 Phaser 4400 Laser Printer Service Manual Install or Reseat Print Cartridge J3 Missing EP Cartridge 1 Print Cartridge is not installed or seated correctly 2 The installed Print Cartridge is not the correct one Print Cartridge Installation Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Open the Front Cover and remove the Print Go to step 2 Replace the Cartridge Print 2 Inspect the tab on the top center of the Print Cartridge Cartridge PL that actuates the Print Cartridge Sensor Assembly 8 1 on Is the tab on the Print Cartridge i
31. des of the belt clean sat page 6 176 3 1 Enter Service Diagnostics and select Clutch Tests Go to step 4 Goto 2 Scroll to Envelope Feeder and press OK Envelope Can you hear the clutch energize Feed Clutch on page 3 38 4 1 Press Back Go to step 7 Goto step 5 2 Scroll to Main Motor Clutch Sol Tests and press OK 3 Scroll to Motor Envelope Feeder 4 Press OK and watch the Feed Belts and Feed Rollers Do all the Feed Belts and Feed Rollers rotate 5 Ensure the Envelope Feeder is installed properly andis Go to step 6 Reinstall the contacting the printer drive gear Envelope Is the Envelope Feeder installed correctly Feeder correctly 6 Remove the Envelope Feeder and check the feeder Replace the Replace the drive gears Envelope gears as ve Feed Clutch necessary pa in good condition and operating RRP 13 12 PL12 20n i on page 7 32 page 6 168 If the prob lem persists Replace the Envelope Feeder PWB RRP 13 3 on page 6 159 Phaser 4400 Laser Printer Service Manual 2 21 Envelope Feeder Jam Troubleshooting Procedure cont d Step Actions and Questions Yes No 7 Perform Registration Sensor on page 3 20 to check the Replace the Replace the Registration Sensor Engine Logic Registration A Board RRP Sensor RRP Is the Registration Sensor operating correctly 9 3 on 54on page 6 89 page 6 61 Jam at MPT Open Front Cover to Clear E2 M Feed Jam E2 0M Paper arrives at REG sen
32. e ground Is the voltage 21 5 2 1 VDC 6 1 On the LVPS check the voltage between P J281 pin Replace the Replace the 11 and frame ground LVPS RRP Engine Logic 2 With the Fan Motor High Speed test still highlighted 95 on Board RRP press OK page 6 91 9 3 on Does the voltage change from 0 8 VDC to 0 0 page 6 89 VDC when you press OK 7 1 Switch the printer power OFF Replace the Replace the 2 Remove the Left Interface Cover RRP 1 1 Engine Logic Fan page 6 6 Left Cover RRP 1 2 page 6 7 and Left Board RRP Assembly Plate RRP 1 11 page 6 16 9 3 on RRP 9 1 on 3 On the LVPS check the voltage between P J283 pin Sage 6 89 ade 6 87 2 and frame ground pag i pag Is the voltage less than 1 0 VDC Engine Logic Board NVRAM Failure U6 NVM Fail Power Off There is problem with Non Volatile RAM on the Engine Logic Board NVM Failure Troubleshooting Procedure Step Actions and Questions Yes No 1 Switch the printer power OFF then ON Replace the Go to step 2 Engine Logic Does the error message reappear Board RRP 9 3 on page 6 89 2 To ensure that the problem is solved switch the printer Replace the Problem power OFF and ON several times Engine Logic solved Does the error message reappear cee RRE page 6 89 2 50 Phaser 4400 Laser Printer Service Manual Load MPT with paper size paper type MPT Paper Empty Load MPT Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Enter S
33. eck the Face Up Chute Go to step 7 Clean or Assembly for contamination or obstructions replace the Is the chute assembly clean and free of Aap Up obstructions ue Assembly as necessary PL 1 2 on page 7 4 7 1 Scroll to Motors Fans Tests and press OK Go to step 8 Go to Exit 2 Scroll to Exit Motor Forward and press OK Motor on Does the Exit Motor rotate page 3 35 8 Do the Exit Rollers and Pinch Rollers on the Go to step 9 Replace the Rear Cover rotate smoothly Exit Rollers or Exit Chute Assembly as necessary PL 7 1 on page 7 18 9 Check the Fuser Assembly for obstructions or Go to step Clean or contamination 10 replace the Is the Fuser clean and free of obstructions ruser Assembly RRP 6 2 on page 6 66 as necessary 10 Check the Transport Chute for contamination or Replace the Clean or obstructions Engine Logic replace the Is the Transport Chute clean and free of ney RRP Mat sae obstructions a on ue as page 6 89 necessary RRP 6 1 on page 6 65 2 26 Phaser 4400 Laser Printer Service Manual Jam at Stacker Open Both Rear Covers to Clear E6 Stacker Jam E6 1 Paper late to Stacker Sensor E6 2 Paper late off Stacker Sensor Stacker Jam Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Open the printer Rear Cover and the Stacker Rear Goto step 2 Clear all Cover jammed 2 Check for paper or other obstructions in the paper paper paper path scraps and Is
34. ensor Registration Roller Clutch Sensor on Assembly on page 3 20 page 3 28 9 1 Remove Tray 1 Go to step Remove 2 Check the paper chute at the front of the tray the 10 obstructions chute guides paper from Tray 2 to the Tray 1 turn and clean rollers Check for contamination paper or other chute obstructions Replace paper Is the chute clean and free of obstructions tray if neces sary PL 2 1 on page 7 6 10 Do the jams occur when feeding from Tray 3 Go to step Go to step 11 14 11 1 Remove Tray 2 and place the tray in Feeder 1 The paper Go to step 12 2 Place Tray 1 in Feeder 2 tray currently 3 Enter Service Diagnostics and select Test Print in Feeder 1 4 Run 20 to 25 test prints from Tray 2 appears to Did all prints complete successfully be defective Go to step 18 12 1 Remove the tray currently in Feeder 2 Go to step Replace the 2 Check the Nudger and Feed Rollers in Feeder 2 for 13 Feed Rollers contamination and wear RRP 11 11 on Are the Feed Rollers clean and in good page 6 130 condition 13 Check the Tray 2 Turn Roller Assembly for Replace the Remove the obstructions contamination or wear Feeder PWB obstruction Are the Turn Rolls clean and in good condition RRP Ui Jon clean or page 6 128 replace the If the prob Turn Roller lem persists Assembly replace the RRP 11 8 on Size PWB page 6 127 RRP 11 19 on page 6 139 then the Engine Logic Board RRP 9 3 on page 6 89 14 Remove Tray 1 a
35. er off Fuser warm up does not complete within 110 seconds m STS Disconnection fail Power off Thermistor circuit is detected to be open m High Temperature trouble Power off Fuser temperature rises above the set temperature m Continuous heat on Power off Heat rod is on for 10 seconds when the Main Drive Motor is stopped after the Fuser warm up is completed Go to Fuser Failure on page 2 49 Fan Failure Power Off Now Press i U5 Fan Fail Power Off Main Fan has failed Check the Main Fan Power Off and On Go to Fan Failure Power Off Now on page 2 49 Engine Logic Board NVRAM Failure Press i U6 NVM Fail Power Off 1 Read error detected during power on 2 Write Error detected Power Off and On Go to Engine Logic Board NVRAM Failure on page 2 50 Phaser 4400 Laser Printer Service Manual Jam at Tray Open Tray and Front Cover E2 Feed Jam E2 0 Paper arrives early to the Registration Sensor or is on the sensor at power on E2 1 Paper arrives late to the Registration Sensor Paper Jam Misfeed Troubleshooting Procedure Step Actions and Questions Yes No 1 Check the paper in all trays Check for curled Go to step 2 Replace with damaged or damp paper and for paper that is out of fresh dry specification paper that is Is the paper in good condition and does it meet pl specifi specification canons
36. ervice Diagnostics and select Sensor Tests It appears Go to step 2 2 Scroll to Sensor Input test and press OK that the MPT 3 Actuate and deactuate the MPT No Paper Sensor No Paper Does the Front Panel display alternate between Sensor is With Paper and Without Paper as you press working and release the actuator correctly If a problem persists replace the Engine Logic Board RRP 9 3 on page 6 89 2 Does the actuator move freely and is itin good Go to step 3 Replace the condition not broken or damaged MPT No Paper Sensor Actuator RRP 4 5 on page 6 50 3 1 Switch the printer power OFF Replace the Go to step 4 2 Remove the Left Interface Cover RRP 1 1 on Engine Logic page 6 6 Left Cover RRP 1 2 on page 6 7 andthe Board RRP Left Plate RRP 1 11 on page 6 16 9 3 on 3 Switch the printer power on ade 6 89 4 On the Engine Logic Board measure the voltage pag between P J23 pin 14 and frame ground Is the voltage 3 3 VDC with the MPT No Paper Sensor deactuated and 0 0 VDC with the Sensor actuated 4 1 Switch the printer power OFF Replace the Go to step 5 2 Remove the Left Front Cover RRP 1 7 on Connector page 6 12 PWB RRP 3 Switch the printer power on 9 7 on 4 On the Connector PWB measure the voltage ag 6 94 between P J45 pin 3 and frame ground pag i Is the voltage 3 3 VDC with the MPT No Paper Sensor deactuated and 0 0 VDC with the Sensor actuated 5 Check the voltage between P J4
37. f Diagnostics Service Diagnostics Menu Map The Service Diagnostics Menu Map lists the tests available for testing print engine parts and functions while diagnosing printer problems When you enter Service Diagnostics the menu items shown in bold type appear on the front panel When you select one of these items the list of individual tests appear Print Service Menu Map Prints this page General Status Provides current print engine status Engine ROM Version Engine Print Counter Engine Configuration Print Resolution Read Fuser Temperature Read Fuser Set Temperature Engine Test Print Starts the test print Print Test pattern Input tray Output tray Duplex Print Quantity Motors Fan Test Test the functionality for motors fan Duplex Motor High Duplex Motor Low Exit Motor Forward Exit Motor Reverse High Exit Motor Reverse Low Main Motor Fan Motor High Speed Laser Scan Motor Stacker Motor Stacker Offset Motor Main Motor Clutch Sol Tests Runs main drive motor with each individual clutch and MPT solenoid Sensor Tests Tests the functionality of sensors switches options by manually toggling each sensor or installing an option Front Cover Switch Rear Cover Switch Paper Tray Size Read display paper size for trays Print Cartridge Switch Toner Sensor Registration Sensor Exit Sensor Fuser Duplex Sensor Stacker Sensor Stacker Full Sensor Output Tray Full Sensor Printer Tray 1 Low
38. gned when the Tray 3 Size replace tray is inserted into the feeder PWB RRP components Are the mating connectors properly connected ley 39 as when the paper tray is inserted fins 139 necessary problem persists replace the Tray 3 Feeder PWB RRP 11 90n page 6 128 Stacker is Full Unload Paper Stacker output tray full Error message indicates the Stacker output tray is full Stacker Full Troubleshooting Procedure Step Actions and Questions Yes No 1 Is there a paper stack in the offset bin actuating Remove the Go to step 2 the Stack Full Sensor paper stack 2 Is the paper curled Go to step 4 Go to step 3 2 54 Phaser 4400 Laser Printer Service Manual Stacker Full Troubleshooting Procedure cont d Step Actions and Questions Yes No 3 Lift and release the Stack Full Actuator a few times Go to step 5 Replace Does the actuator move freely Strack Full Actuator RRP 10 12 on page 6 112 or Stack Full Sensor RRP 10 13 on page 6 113 as necessary 4 1 Replace paper in paper tray with fresh dry paper Go to step 5 Problem 2 Run test prints solved Does the error code reappear 5 1 Enter Service Diagnostics and select Sensor Tests Replace Go to 2 Scroll to Stacker Full Sensor Engine Logic Stacker Full 3 Manually actuate and deactuate the Stack Full Board RRP Sensor on Actuator 9 3 on page 3 37 Does the message on the display alternate page 6 89 between Full and Not Full as y
39. guide paper that ls touches the rear of the paper stack within m The paper is within specification specification m f Custom Mode is used the settings are correct or correct Are all settings correct and is the paper within settings specification 2 Check the paper path for contamination paper or other Go to step 3 Remove obstructions obstructions Is the paper path clean and free of obstructions EN components as necessary 3 1 Enter Service Diagnostics and select Engine Test Go to step 6 Go to step 4 Print 2 Print 25 prints from Tray 1 When the error code is displayed is there paper on the Exit Sensor 4 1 Open the Rear Cover and the Fuser Access Cover Go to step 5 Repair 2 Check the Exit Sensor Actuator actuator or Does the actuator move freely and return to the replace the home position when released Fuser Assembly RRP 6 2 on page 6 66 Phaser 4400 Laser Printer Service Manual 2 25 Exit Jam Troubleshooting Procedure cont d Step Actions and Questions Yes No 5 1 Enter Service Diagnostics and select Sensor Tests Replace Go to Exit 2 Scroll to Exit Sensor Fuser and press OK Engine Logic Sensor on 3 Open the Fuser Access Cover and use a piece of Board RRP page 3 34 paper to block and unblock the Exit Sensor 9 3 on Does the message on the display alternate page 6 89 between With Paper and Without Paper as you block and unblock the sensor 6 Open the Rear Cover and ch
40. h the correct Cartridge 2 The installed Print Print Cartridge Press i Cartridge is not the Go to Install or Reseat Print correct one Cartridge on page 2 33 Toner Is Low J5 Toner Low Toner Low is Go to Toner is Low on Press i detected after 10 page 2 35 prints while Toner Sensor is on Main Motor U1 Motor Fail Power Main Motor speed is Power Off and On Failure off iA ees Go to Main Motor Failure Press i ener on page 2 45 seconds Laser Unit U2 Laser Fail Power 1 Transmitting BD Power Off and On Failure off signal is longer than Go to Laser Unit Failure on Press i specified value for 10 page 2 48 sec t1 2 The laser power does not reach the specified value 3 Laser signal intervals become longer than the Fail time interval after Laser warm up is completed 2 16 Phaser 4400 Laser Printer Service Manual Error Message Summaries cont d Note The messages listed in the Diagnostic Message column appear only in Service Diagnostics while printing Engine Test Prints The code numbers in these messages also appear as part of the Help information displayed when you press i Front Panel Message Diagnostic Message Error Description Troubleshooting Procedure Fuser Failure Press i U4 Fuser Fail Power Off m Low temperature trouble Power off Fuser temperature drops below the set temperature after the Fuser warm up is complete m Warm up fail Pow
41. he 2 Remove the Left Interface Cover RRP 1 1 on Engine Logic page 6 6 Left Cover RRP 1 2 on page 6 7 and the Board RRP Left Plate RRP 1 11 on page 6 16 9 3 on 3 Remove the Stacker from the printer Switch the io 6 89 printer power on On the Engine Logic Board check pag i the voltage between P J35 pin 1 and frame ground Is the voltage 3 3 VDC 3 1 Switch the printer power OFF Replace the Replace the 2 Properly install the Stacker on the printer Engine Logic Stacker PWB 3 Switch the printer power on Board RRP RRP 10 7 4 On the Engine Logic Board check the voltage 9 3 on page 6 107 between P J35 pin 1 and frame ground page 6 89 Is the voltage 0 0 VDC Install or Reseat the Envelope Feeder E9 E Envelope Feeder Fail Re install Envelope feeder failed or was removed while power is on Envelope Feeder Failure Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Switch the Printer power OFF Problem Go to step 2 2 Remove and reinstall the envelope feeder solved 3 Switch the Printer power on 4 Print a Configuration Page Is the Envelope Feeder listed on the Configuration Pages 2 1 Switch the Printer power OFF Replace the Go to step 3 2 Remove the Left Interface Cover RRP 1 1 on Envelope page 6 6 Left Cover RRP 1 2 on page 6 7 and Feeder PWB the Left Plate RRP 1 11 on page 6 16 3 Switch the Printer power on Sa 4 Check the voltage on the Engine Logic Board between P J23 Pin 4 and fra
42. hen you press OK appropriate Turn Roller Do all Turn Roller Shafts rotate smoothly Assembly RRP 3 2 page 6 29 or RRP 11 8 page 6 127 2 46 Phaser 4400 Laser Printer Service Manual Main Motor Failure Troubleshooting Procedure cont d Step Actions and Questions Yes No 9 Scroll to Motor Registration and press OK Does the Registration Roller rotate smoothly Go to step 10 Repair or replace the Registration Rolls RRP 5 6 page 6 62 as necessary 10 1 Remove paper from all paper trays 2 Scroll to Motor Tray 1 Feed and press OK Does the Main Motor rotate smoothly Go to step 11 Repair or replace the Tray 1 Feed Clutch or Feed Shaft RRP 3 6 page 6 33 11 Does the printer have a Tray 2 Go to step 12 Replace the Main Motor Assembly RRP 8 1 page 6 84 12 Scroll to Motor Tray 2 Feed and press OK Does the Main Motor rotate smoothly Go to step 13 Repair or replace the Tray 2 Feed Clutch or Feed Shaft RRP 11 10 page 6 129 13 Does the printer have a Tray 3 Go to step 14 Replace the Main Motor Assembly RRP 8 1 page 6 84 14 Scroll to Motor Tray 3 Feed and press OK Does the Main Motor rotate smoothly Go to Main Motor Assembly on page 3 15 Repair or replace the Tray 3 Feed Clutch or Feed Shaft RRP 3 6 page 6 33 Phaser 4400 Laser Printer Service Manual 2 47 Laser Unit Failure U2 Laser Fail
43. ilure on page 2 37 Install or Reseat the Envelope E9 E Envelope Feeder Fail Reinstall Envelope feeder module removed Reinstall Envelope Feeder Go to Install or Reseat the Feeder while power on Envelope Feeder on Press i page 2 37 Tray 2 or 3 E11 Tray 2 3 Fail Either Tray 2 or Tray Reinstall Feeder 2 3 Failure 3 was disconnected i man cae hei Go to Tray 2 or 3 Failure Press i on page 2 52 or Tray 2 Failure Press i Phaser 4400 Laser Printer Service Manual 2 15 Error Message Summaries cont d Note The messages listed in the Diagnostic Message column appear only in Service Diagnostics while printing Engine Test Prints The code numbers in these messages also appear as part of the Help information displayed when you press i Front Panel Diagnostic Error Description Troubleshooting Message Message Procedure Paper Size PSE 1 Paper Size There is a conflict Correct the mismatch Jam Check Error between the size of Size and Open Rear Cover To Clear the paper which is detected by the Size Switches and the length of paper the Open Rear Cover Go to Paper Size Jam Check Size and Open Rear Cover to Clear PSE 1 on Press printer detects by the page 2 30 length of time the Registration Sensor is actuated Install Or J3 Missing Print 1 Print Cartridge is Install the Print Cartridge Reseat Print Cartridge not installed or replace wit
44. ine Logic LVPS RRP Board RRP 9 5 on Is the voltage 5 0 VDC 9 3 on page 6 91 page 6 89 6 On the Engine Logic Board check the voltage between Replace the Go to Install P25 pin 3 and frame ground Engine Logic or Reseat Board RRP Print 9 3 on Cartridge on page 6 89 page 2 33 Is the voltage 5 0 VDC 2 48 Phaser 4400 Laser Printer Service Manual Fuser Failure U4 Fuser Fail Power Off m Low temperature trouble Power off Fuser temperature drops below the set temperature after the Fuser warm up is complete m Warm up fail Power off Fuser warm up does not complete within 110 seconds m STS Disconnection fail Power off Thermistor circuit is detected to be open m High Temperature trouble Power off Fuser temperature rises above the set temperature E Continuous heat on Power off Heat rod is on for 10 seconds when the Main Drive Motor is stopped after the Fuser warm up is completed Fuser Failure Troubleshooting Procedure Step Actions and Questions Yes No 1 Switch the printer power OFF Wait a few minutes then Go to Fuser Goto step 2 switch the printer power on Assembly on page 3 18 Does the error message reappear 2 Run 25 to 30 test prints Goto Fuser Problem Assembly on solved Does the error message reappear page 3 18 Fan Failure Power Off Now U5 Fan Fail Power Off The printer is detecting incorrect fan rotation Fan Failure Troubleshooting Proced
45. ir or feeder mating connector are properly aligned when the Tray 2 Size replace tray is inserted into the feeder PWB RRP components Are the mating connectors properly connected 1 oe 39 as when the paper tray is inserted A 139 necessary problem persists replace the Tray 2 Feeder PWB RRP 11 9 on page 6 128 10 Does the printer have two optional 550 Sheet Go to step Replace the Feeders installed 11 Engine Logic Board RRP 9 3 on page 6 89 11 On the Engine Logic Board check the voltage between Replace the Go to step P J33 pin 14 and frame ground Engine Logic 12 Is the voltage 24 VDC BOAN RRE 9 3 on page 6 89 Phaser 4400 Laser Printer Service Manual 2 53 Tray 2 or 3 Failure Troubleshooting Procedure cont d Step Actions and Questions Yes No 12 1 Remove Paper Tray 3 Go to step Replace the 2 Check the voltage between the bottom terminal on 13 Tray 3 Size the mating connector on the Tray 3 feeder and frame PWB RRP ground 11 19 on Is the voltage 24 VDC page 6 139 If the problem persists replace the Tray 3 Feeder PWB RRP 11 90n page 6 128 13 Check the resistance between the bottom and top Go to step Replace the terminals of the mating connector on paper tray 3 14 paper tray Is there continuity between the two pins mating connector PL 2 2 on page 7 8 14 Check that the paper tray mating connector and the Replace the Repair or feeder mating connector are properly ali
46. l Stack Sensor is actuated Go to Standard Output Tray is Full Unload Paper on page 2 38 2 14 Phaser 4400 Laser Printer Service Manual Error Message Summaries cont d Note The messages listed in the Diagnostic Message column appear only in Service Diagnostics while printing Engine Test Prints The code numbers in these messages also appear as part of the Help information displayed when you press i Front Panel Diagnostic Error Description Troubleshooting Message Message Procedure No Paper In Tray Empty Tray is out of Load paper into Tray Tray paper Go to No Paper in Tray Press i on page 2 41 Load Tray with paper size PSE 1 Paper Size Error Paper Size Error Load correct size paper in tray paper type Go to Load Tray with paper size paper type on page 2 42 Close Front Close Front 1 Front cover Close Front Cover Cover Cover Close Rear interlock is open Close Rear Cover Close Rear Cover 2 Rear cover Go to Close Front Cover interlock is open Cover Close Rear Cover Press i on page 2 31 Install or Reseat The Duplex Unit Press i E9 1 Duplex Unit Fail Duplex module removed while power is on Reinstall Duplex Module Go to Install or Reseat the Duplex Unit on page 2 36 Stacker Failure Press i E9 2 Stacker Unit Fail Stacker removed while power is on Reinstall Stacker Go to Stacker Fa
47. me ground Is the voltage 0 0 VDC Phaser 4400 Laser Printer Service Manual 2 57 Envelope Feeder Failure Troubleshooting Procedure cont d Step Actions and Questions Yes No 3 1 Switch the Printer power OFF Replace the Go to step 4 2 Remove the Envelope Feeder Envelope 3 Check for continuity between J418 Pin 3 Envelope Feeder PWB Connector Assembly and P J23 Pin 4 on the Engine RRP 13 3 on Logic Board page 6 159 Is there continuity between the two pins 4 1 Remove the Front Cover RRP 1 6 on page 6 11 Replace the Go to step 5 and the Left Front Cover RRP 1 7 on page 6 12 Envelope 2 Check for continuity between P J 41 Pin 6 on the Connector Connector PWB and P J 23 Pin 4 Assembly Is there continuity between the two pins RRP 4 10 on page 6 56 5 Check the Connector Harness Assembly for proper Replace the Repair or connection and for defective wires Connector replace if Is the Harness in good condition Ad AA necessary page 6 94 Standard Output Tray is Full Unload Paper Standard Output Tray Full Error message indicates the output tray is full Output Tray Full Troubleshooting Procedure Step Actions and Questions Yes No 1 Is there a paper stack in the standard bin Remove the Go to step 2 actuating the Output Tray Full Sensor paper stack 2 Is the paper curled Go to step 4 Go to step 3 3 Lift and release the Output Tray Full Actuator a few Go to step 5 Replace times Out
48. nd Tray 2 Check the paper chute at Go to step Remove the front of both trays the chute guides paper from 15 obstructions Tray 3 to the Tray 2 turn rolls and from Tray 2 to the and clean Tray 1 turn rollers Check for contamination paper or chute other obstructions Is the chute clean and free of obstructions Replace paper tray if neces sary PL 2 1 on page 7 6 Phaser 4400 Laser Printer Service Manual Paper Jam Misfeed Troubleshooting Procedure cont d Step Actions and Questions Yes No 15 1 Replace Tray 2 The paper Go to step 16 2 Remove Tray 3 and place the tray in Feeder 1 tray cur 3 Place Tray 1 in Feeder 3 rently in 4 Enter Service Diagnostics and select Test Print 5 Run 20 to 25 test prints from tray 3 jails j appears to Did all prints complete successfully be defective Go to step 19 16 1 Remove the tray currently in Feeder 3 Go to step Replace the 2 Check the Nudger and Feed Rolls in Feeder 3 for 17 Feed Rolls contamination and wear RRP 11 11 on Are the Feed Rolls clean and in good condition page 6 130 17 Check the Tray 3 Turn Roller Assembly for Go to step Remove the obstructions contamination or wear 20 obstruction Are the Turn Rolls clean and in good condition clean or replace the Turn Roller Assembly RRP 11 8 on page 6 127 18 Perform Tray Motor Assembly Checkout on page 3 26 Check the Follow the to check the tray motor paper tray for repair advice g
49. nd press OK then Engine Logic to the size of 3 Select Printer Setup Menu and press OK Board RRP paper actually 4 Select Tray Setup Menu and press OK 9 3 on installed then 5 Select MPT Setup Menu and press OK a e 6 89 fess OK 6 Select Change Paper Size and press OK pag i P Does the paper size checked in the MPT Setup Menu match the size actually in the MPT 2 30 Phaser 4400 Laser Printer Service Manual Paper Size Error Troubleshooting Procedure cont d Step Actions and Questions Yes No 3 Is the paper size in the problem tray within Go to step 4 Replace with printer specifications paper that meets specifications 4 Check the side guides and the Paper Stack End Guide Go to step 5 Properly set in the problem tray the guides Are all guides properly set for the size of paper installed 5 Check the size cam on the left side of the paper tray Go to step 6 Replace the see the Paper Size Actuators table below paper tray PL Are the cams in good condition not broken and 2l a 6 PL do they move freely as the paper tray end guide page t is moved 11 1 on f page 7 26 6 1 Reinstall the paper tray Replace the Replace the 2 Enter Service Diagnostics and select Sensor Tests Engine Logic Tray Size 3 Scroll to Paper Tray Size Read and press OK Board RRP PWB 4 Select Tray 1 Size and press OK 9 3 on RRP 3 13 on 5 Press Back and select another tray size until all page 6 89 page 6 42
50. ne or two digit numeric codes Use the tables in Interpreting Fault History to decipher the codes When an error first occurs record the error message and code then cycle power to the printer to see if the error recurs Accessing Fault History 1 View the printer s fault history on the front panel a Enter Menus then select Support Menu Service Tools Menu Fault History b Select Engine Errors or Jam Errors to display the errors 2 Print if possible the Usage Profile from the printer s front panel Support Menu Fault history information for Engine Errors and Jams is detailed in this report log 3 If the printer is connected to a network and has a TCP IP address view the printer s web page using a web browser a Open a web browser b Enter the printer s IP address as the URL c Select the Jobs tab and click the Usage Profile link You can then click a link to view or to print the Usage Profile Phaser 4400 Laser Printer Service Manual 2 5 Interpreting Fault History Error Codes The following tables provide a cross reference of the numeric fault history codes to the Diagnostic Message and code found in Printer Error Messages on page 2 11 These numeric codes are displayed on the Front Panel for both Engine Errors and Jams in the Usage Profile the numeric codes are used only in the Engine Error Log Item 262 Fault History Codes for Engine Errors
51. ntact page 7 20 2 Press and release the Print Cartridge Sensor Assembly Go to step 3 Replace the Actuator Print Does the Print Cartridge Sensor Assembly alei Actuator move smoothly engor Assembly RRP 7 3 on page 6 81 3 1 Enter Service Diagnostics and select Sensor Tests Replace the Go to step 4 2 Scroll to Print Cartridge Sensor test and press OK Engine Logic 3 Insert and remove the Print Cartridge a few times Board RRP Does the display alternate between Not 9 3 on Installed and Installed as you remove and page 6 89 replace the Print Cartridge 4 1 Switch the printer power OFF Replace the Go to step 5 2 Remove the Left Interface Cover RRP 1 1 on Engine Logic page 6 6 the Left Cover RRP 1 2 on page 6 7 and Board RRP the Left Plate RRP 1 11 on page 6 16 9 3 on 3 Install the Print Cartridge Leave the Front Cover p open page 6 89 4 Disconnect P J25 from the Engine Logic Board 5 On the Engine Logic Board check for continuity between J21 4 and J25 3 and J25 2 and J25 1 as you insert and remove the Print Cartridge Is there continuity between J25 4 and J25 3 and J25 2 and J25 1 when you insert the cartridge and no continuity when you remove the cartridge 5 Is the Print Cartridge a Xerox Phaser 4400 Print Replace the Replace Cartridge Print Print Cartridge Cartridge Sensor with a Xerox Assembly Phaser 4400 together with Print the harness Cartridge PL RRP 7 40n 8 10on page 6 81 page 7 20
52. ntity Allows you to select the number of test prints to run Error and Jam Recovery If the printer encounters a problem while printing the Engine Test Print it halts printing and displays an error message on the Front Panel Refer to the Diagnostic Messages in the Print Engine Error Messages table that follows The Diagnostic Messages also appear as secondary headings in the Troubleshooting Procedures Printing resumes after the problem has been fixed Engine NVRAM Default Settings The following table lists the defaults for each of the Engine NVRAM Adjustments except the paper size adjustments which have no default settings NVRAM Default Table Engine NVRAM Default Range Engine NVRAM Default Range Adjustment Value Adjustments Value Laser Power 10 0 15 Tray 2 Scan Direction 3 0 8 Tray 1 Process 8 0 15 Tray 3 Scan Direction 2 0 8 Direction Tray 2 Process 8 0 15 Envelope Scan Direction 4 0 8 Direction Tray 3 Process 8 0 15 MPT Scan Direction 6 0 8 Direction Envelope Process 8 0 15 Duplex Process 8 0 15 Direction Direction MPT Process 8 0 15 Duplex Scan Direction 4 0 8 Direction Tray 1 Scan 4 0 8 Direction 2 10 Phaser 4400 Laser Printer Service Manual Printer Error Messages Index of Errors Front Panel Message Jam Errors Jam at Tray Open Tray and Front Cover Code Jam E2 Jam at Envelope Feeder Remove Feeder and Open Front Cover Jam
53. o the hex values displayed Fuser Temperature Cross Reference Table Hex value Temperature C F Hex value Temperature C F EE 0 C 32 F CA 140 C 284F FE 10 C 50 F C6 145 C 293 F FD 20 C 68 F C1 150 C 302 F FC 30 C 86 F BD 155 C 311 F FB 40 C 104 F B8 160 C 320 F F9 50 C 122 F B3 165 C 329 F F7 60 C 140 F AE 170 C 338 F F4 70 C 158 F AQ 175 C 347 F FO 80 C 176 F A4 180 C 356 F EC 90 C 194 F 99 190 C 374 F E7 100 C 212 F 8F 200 C 392 F E1 110 C 230 F 85 210 C 410 F DA 120 C 248 F 7C 220 C 428 F D3 130 C 266 F 72 230 C 446 F Phaser 4400 Laser Printer Service Manual 2 9 Engine Test Print The Engine Test Print test pattern shown on page 4 4 is stored in the Engine Logic Board and is accessible through Service Diagnostics You can use the Engine Test Print to identify repair and validate the operability of printer xerographics and paper handling from all paper sources options and output destinations When you select Engine Test Print from the main Service Diagnostics menu the following selections are available Print Test Pattern Starts the print Input Tray Allows you to select the paper source Output Tray Allows you to select the test print destination Duplex Turns duplexing on or off if the Duplex Unit is installed Print Qua
54. oller Shaft rotates Sensor on page 6 44 m The Pick up Cams move and allow the Bottom page 3 20 and repair or Plate to contact the Feed Roller replace m The Feed Roller Shaft stops after one complete components revolution as necessary 6 1 Check the Registration Sensor Registration Sensor If the Follow the on page 3 20 problem repair advice Is the Registration Sensor good persists inthe replace the Registration Engine Logic Sensor Board RRP check 9 3 on page 6 89 Jam at Front Open Front Cover to Clear E3 Registration Jam E3 1 Paper is late to the Exit Sensor or paper is late off the Registration Sensor E3 2 Registration Sensor is actuated at power on Registration Jam Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Switch the printer power OFF Go to step 2 Clean compo 2 Open the Front Cover and remove the Print nents and Cartridge _ a remove all 3 Check the printer for contamination paper scraps or obstructions other obstructions i Is the paper path clean and free of obstructions 2 1 Open the Rear Cover Go to step 3 Clean compo 2 Remove the Duplex unit if installed nents and 3 Open the Fuser Access Cover remove all 4 Check for contamination paper scraps or other obstructions obstructions i Is the paper path clean and free of obstructions 3 1 Remove Fuser Go to step 4 Replace the 2 Rotate the Fuser Gear Fuser Assem Does the Fuser Idler Gear ro
55. or and press OK The motor should run for about three seconds Does the Stacker Motor run Phaser 4400 Laser Printer Service Manual 2 27 Stacker Jam Troubleshooting Procedure cont d Step Actions and Questions Yes No 6 1 Remove the Left Interface Cover RRP 1 1 on Go to step 7 Replace the page 6 6 Left Cover RRP 1 2 on page 6 7 and the Engine Logic Left Plate RRP 1 11 on page 6 16 Board RRP 2 Enter Service Diagnostics and select Motors Fans 9 3 on Tests a e 6 89 3 Scroll to Stacker Motor pag i 4 On the Engine Logic Board measure the voltage between P J35 pin 6 and frame ground as you press OK Does the voltage drop from 3 3 VDC to 0 5 VDC when OK is pressed 7 1 Switch the printer power OFF Replace the Replace the 2 Remove the Stacker from the printer RRP 10 1 on Stacker PWB Stacker page 6 101 and turn the Stacker upside down RRP 10 7 Motor RRP 3 Disconnect P J210 from the Stacker PWB on 10 8 on 4 Check the resistance between pins 1 and 4 pins 1 i and 6 pins 2 and 3 and pins 2 and 5 on the page 6 107 page 6 108 disconnected plug Are all readings 70 10 ohms 8 1 Open the Stacker Rear Cover Go to step 9 Repair or 2 Press OK to run the Stacker Motor replace the 3 Check the Stacker rollers Stacker Are the Stacker Rollers rotating smoothly Rollers as necessary RRP 10 14 on page 6 114 RRP 10 15 on page 6 115 9 1 Switch the printer power OFF Go to step Repair or 2 Rem
56. ostics to turn motors drives and or gears never touch or interrupt the moving parts as damage to the printer will result Procedures Using the Troubleshooting Procedures 1 Each Step in a Troubleshooting Procedure instructs you to perform a certain action or procedure The steps are to be followed sequentially in the order given until the problem is fixed or resolved The Actions and Questions box contains additional information and or additional procedures you must follow to isolate the problem When a procedure instructs you test a component using service diagnostics see Service Diagnostics on page 2 7 for the detailed steps and functions for testing parts of the printer The action is followed by a question If your response to the question is Yes then follow the instructions for a Yes reply If your response to the question is No then follow the instructions for a No reply Troubleshooting Procedures may ask you to take voltage readings or test for continuity at certain test points within the printer For detailed diagrams refer to the section Wiring Data on page 9 1 for complete information on test point locations and signal names Troubleshooting Procedures often ask you to replace a printer component The section FRU Disassembly on page 6 1 provides detailed steps for removing and replacing all major parts of the printer The section Parts Lists on page 7 1 details the location
57. ou lift and release the actuator the count may have a short delay because of the sensor circuit Load Envelope Feeder with paper size paper type Envelope Feeder empty Load Envelope Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Enter Service Diagnostics and select Sensor Tests Replace the Go to step 2 2 Scroll to Envelope No Paper and press OK Engine Logic 3 Press and release the Envelope Feeder No Paper Board RRP Sensor Actuator 9 3 on Does the message on the display alternate page 6 89 between With Paper and Without Paper as you press and release the actuator 2 1 Switch the Printer power OFF Go to step 3 Go to Install 2 Remove the Left Interface Cover RRP 1 1 on or Reseat the page 6 6 Left Cover RRP 1 2 on page 6 7 and Envelope the Left Plate RRP 1 11 on page 6 16 Feeder on 3 Switch the Printer power on page 2 37 4 On the Engine Logic Board check the voltage between P J23 Pin 4 and the frame ground Is the voltage 0 0 VDC Phaser 4400 Laser Printer Service Manual 2 55 Load Envelope Troubleshooting Procedure cont d Step Actions and Questions Yes No 3 Check the voltage between P J23 Pin 3 and frame Replace the Go to step 4 ground Engine Logic Is the voltage 3 3 VDC with the Envelope Feeder ea RRP No Paper Sensor de actuated and 0 0 VDC with 9 7 2 0n the sensor actuated page 6 89 4 1 Switch the Printer power OFF an
58. ove the Stacker RRP 10 1 on page 6 101 10 replace the 3 Open the printer rear cover and check the movement Exit Gate as of the Exit Gate necessary Does the Exit Gate move freely in both RRP 6 4 on directions when pressed and released page 6 69 10 1 Reinstall the Stacker Replace the Replace the Note Each time the printer s rear cover or front eae eae cover is opened and closed with power applied the printer performs a reset At the O RRP 10 10 completion of the reset the Exit Gate toggles page 6 107 on between fully open and fully closed If the page 6 110 positions problem If the ersists roblem 2 open ine printer rear cover Remove the Duplex Unit replace the See 3 Switch the printer power on Engine Logic replace the 4 Cheat the Rear Cover Interlock and watch the Exit Board RRP Stacker PWB Gate at the end of reset 9 3 on RRP 10 7 5 Remove then replace the Rear Cover Interlock page 6 89 on cheater page 6 107 Does the Exit Gate toggle at the completion of each reset 2 28 Phaser 4400 Laser Printer Service Manual Jam at Front Rear Open Front Rear Cover to Clear E7 Duplex Jam E7 0 Paper arrives at the Registration Sensor early from the Duplex Sensor E7 1 Paper is late to the Duplex Sensor E7 2 Paper is late off the Duplex Sensor The Duplex Sensor is on at power on E7 3 Paper is late to the Registration Sensor from the Duplex Sensor Duplex Jam Troubleshooting Procedu
59. ponent is receiving the correct voltage value from the power supply and if gating a voltage drop occurs during component actuation Gating signals may be nothing more than a pulse resulting in a momentary drop in voltage that may be difficult or impossible to read on the average multi meter 7 When a Troubleshooting Procedure instructs you to replace a non spared component and that component is part of a parent assembly you should replace the entire parent assembly Voltage Measurements Power and signal grounds are connected to frame ground You can perform all circuit troubleshooting using the metal frame chassis as the grounding point If you need more information to locate connectors or test points refer to Wiring Data on page 9 1 Unless otherwise specified the following voltage tolerances are used within this section Voltage Measurements Stated Measured Stated Measured 3 3 VDC 3 0 to 3 6 VDC 24 0 VDC 21 6 to 26 4 VDC 5 0 VDC 4 8 to 5 2 VDC 0 0 VDC Less than 0 5 VDC 2 4 Phaser 4400 Laser Printer Service Manual Using Fault History The printer keeps a record of engine errors and jams You can access Fault History for either engine errors or jams in one of three ways m View the Fault History at the Front Panel m Print the printer s Usage Profile m View or print the Usage Profile from the printer s web page if the printer is connected to a network The errors are presented as a series of o
60. put Tray Full Actuator Does the actuator move freely RRP 6 8 on page 6 76 or Output Tray Full Sensor RRP 6 6 on page 6 72 as necessary 4 Replace paper in paper tray with fresh dry paper Run Go to step 5 Problem test prints solved Does the error code reappear 2 38 Phaser 4400 Laser Printer Service Manual Output Tray Full Troubleshooting Procedure cont d Step Actions and Questions Yes No 5 1 Enter Service Diagnostics and select Sensor Tests Replace Go to Output 2 Scroll to Output Tray Full Sensor and press OK Engine Logic Tray Full 3 Manually actuate and deactuate the Output Tray Full Board RRP Sensor on Actuator 9 3 on page 3 22 Does the message on the display alternate page 6 89 between Full and Not Full as you lift and release the actuator the indication may have a short delay because of the sensor circuit Tray Paper is Low Paper stack in the Paper Tray Assembly is below 50 30 sheets Low Paper Troubleshooting Procedure Step Actions and Questions Yes No 1 Fill the tray in the affected position Go to step 2 Problem Does the message reappear solved 2 1 Remove the affected tray Assembly Go to step 3 Repair or 2 Push up the Low Paper Actuator manually and then replace the release Low Paper The Low Paper Actuator moves smoothly Sensor Assembly RRP 3 5 page 6 32 RRP 11 14 page 6 133 3 1 Enter Service Diagnostics and select Sensor Test
61. quantity and part number for all spared parts of the printer Phaser 4400 Laser Printer Service Manual 2 3 General Notes on Troubleshooting 1 Unless indicated otherwise the instruction switch ON printer main power means for you to switch ON printer power and let the printer proceed through POST 2 When instructed to take voltage continuity or resistance readings on wiring harness proceed as follows check P J 232 1 to P J 210 5 by placing the red probe of your meter on pin 1 of P J 232 and place the black probe of your meter on pin 5 of P J 210 3 When you are instructed to take voltage readings between P J 232 P J 210 without specified pin numbers check all pins Refer to the section Wiring Data on page 9 1 for the location of all wiring harnesses and pins 4 When you are instructed to take a voltage reading the black probe is generally connected to a pin that is either RTN Return or SG Signal Ground You can substitute any RTN pin or test point in the printer and you can use FG frame ground in place of any SG pin or test point 5 Unless a troubleshooting procedure instructs otherwise before measuring voltages make sure the printer is switched ON the Imaging Unit and the paper trays are in place and the interlock switches are actuated 6 All voltage values given in the troubleshooting procedures are approximate values The main purpose of voltage readings is to determine whether or not a com
62. r smell coming from the printer Print a Usage Profile Report if the printer is able to print View the fault history under the Service Tools Menu Verify the AC input power supply is within proper specifications ONDAN Step 2 Inspect and Clean the Printer Switch OFF printer power Disconnect the AC power cord from the wall outlet Verify the power cord is free from damage or short circuit and is connected properly Remove the Print Cartridge and protect it from light Inspect the printer interior and remove any foreign matter such as paper clips staples pieces of paper dust or toner Clean the printer interior with a lint free cloth dampened slightly with cold water and mild detergent m Do not use solvents or chemical cleaners to clean the printer interior m Do not use any type of oil or lubricant on printer parts m Use only an approved toner vacuum 7 Clean all rubber rollers with a lint free cloth dampened slightly with cold water and mild detergent 8 Inspect the interior of the printer for damaged wires loose connections toner leakage and damaged or obviously worn parts 9 If a Print Cartridge appears obviously damaged replace with a new one O RAON Step 3 Find the Cause of the Problem 1 Use the Print Engine Error Messages table page 2 11 or POST Error Code table page 2 58 to find the cause of the problem Use Diagnostics to check printer and optional components Use the
63. r was on Duplex Unit Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Switch the printer power OFF Problem Go to step 2 2 Remove and reinstall the Duplex Unit solved 3 Switch the printer power on 4 Print Configuration Pages Is the Duplex Unit listed on the Configuration Page 2 sided Printing 2 1 Enter Service Diagnostics Replace the Go to step 3 2 Select Sensor Tests and press OK Engine Logic 3 Scroll to Duplex Unit Presence and press OK Board RRP Does the display read Installed with the unit 9 3 on present and Not Installed without the unit page 6 89 present 3 Check the wiring harnesses Replace the Replace the zi g eo Duplex PWB Duplex Are the wiring harnesses in good condition RRP 12 4 Barness page 6 144 Assembly If the J32 P341 problem RRP 9 12 persists page 6 99 replace the Engine Logic Board RRP 9 3 on page 6 89 2 36 Phaser 4400 Laser Printer Service Manual Stacker Failure E9 2 Stacker Unit Fail Stacker has failed or was removed while power is on Stacker removed while power is on Stacker Failure Troubleshooting Procedure Step Actions and Questions Yes No 1 1 Switch the printer power OFF Problem Go to step 2 2 Remove and reinstall the Stacker solved 3 Switch the printer power on 4 Print a Configuration Page Is the Stacker listed on the Configuration Page 2 1 Switch the printer power OFF Go to step 3 Replace t
64. re Step Actions and Questions Yes No 1 1 Open the printer and check for paper or other Goto step 2 Clear all obstructions in the paper path jammed 2 Remove the Duplex Unit and check the rear entrance aper pape chute to the Paper Handler PAR P Is the printer free of jammed paper paper obstructions scraps or other obstructions from the printer 2 Check the Duplex Belt Rollers and gears Check for Go to step 3 Replace contamination wear and obstructions components Are the Duplex rollers gears and belt clean and a rin in good condition nitas necessary RRP 12 1 on page 6 141 3 1 Reinstall the Duplex Unit and enter Service Clearthejam Problem Diagnostics and press solved 2 Select Engine Test Print and press OK Back Go to 3 Scroll to Print Quantity and press OK step 4 4 Set the quantity to 15 and press Back i 5 Scroll to Duplex and press OK Set duplex to ON 6 Scroll to Print Test Pattern and press OK Does the error code reappear 4 1 Select Motors Fans Tests Go to step 5 Go to step 6 2 Scroll to Duplex Motor High and press OK The motor should run for about three seconds 3 Scroll to Duplex Motor Low and press OK The motor should run for about three seconds Can you hear the Duplex Motor run at both speeds Phaser 4400 Laser Printer Service Manual 2 29 Duplex Jam Troubleshooting Procedure cont d Step Actions and Questions Yes No 5 1 Select Sensor Tests Perform
65. s Replace the Go to step 4 2 Scroll to Tray Low Paper Sensor and press OK Engine Logic 3 Press the Low Paper Actuator manually and then Board RRP release 9 3 on Does the message on the Front Panel display page 6 89 alternate between Low and Not Low as you press the Low Paper Actuator 4 Check the wiring associated with the specific Low Replace the Replace the Paper Sensor Low Paper faulty wiring oa Sensor Is the wiring OK RRP 3 5 page 6 32 RRP 11 14 page 6 133 Phaser 4400 Laser Printer Service Manual 2 59 Tray 2 or Tray 3 Paper is Low Paper stack in Tray 2 and or Tray 3 is below 50 30 sheets Low Paper Tray 2 or Tray 3 Troubleshooting Procedure Step Actions and Questions Yes No 1 Fill the affected paper tray with fresh paper Go to step 2 Problem Is the Error Message still displayed solved 2 1 Remove the paper tray from affected Feeder Go to step 3 Inspect the Assembly Low Paper 2 Manually push up and release the low paper actuator Actuator Does the low paper actuator move smoothly up Repair or and down replace as required 3 1 Enter Service Diagnostics and select Sensor Tests Replace the Goto step 4 2 Scroll to Tray 2 or Tray 3 Low Paper Sensor and Engine Logic press OK Board RRP 3 Press and release the Low Paper Actuator 9 3 on Does the message on the Front Panel display page 6 89 alternate between Low and Not Low as you press and release
66. sor early E2 1M Paper arrives at REG sensor late Feed Jam Procedure Step Actions and Questions Yes No 1 1 Switch the printer power OFF Go to step 2 Clean the 2 Open the Front Cover MPT and 3 Check the MPT Chute for contamination or remove the obstructions paper or Is the MPT free of contamination paper or other obstruction obstructions 2 Check the MPT Feed Roller for contamination and Go to step 3 Replace the wear MPT Feed Is the feed roller clean and in good condition Peas page 6 47 3 1 Enter Service Diagnostics and select Solenoid Tests Goto step 4 Goto MPT 2 Scroll to MPT and press OK Pick Up Can you hear the solenoid energize Solenoid on page 3 30 4 1 Open the Front Cover and cheat the Front Cover Go to step 5 Check re Interlock pair or re 2 From the Service Diagnostics menu select place the Motors Fans Tests and press OK Drive Gear 3 Scroll to Main Motor and press OK PL 5 1 on Do the MPT drive gears rotate smoothly page 7 14 Main Drive Gear Assem bly RRP 8 2 on page 6 85 or Main Mo tor Assem bly RRP 8 1 on page 6 84 as neces sary 2 22 Phaser 4400 Laser Printer Service Manual Feed Jam Procedure cont d Step Actions and Questions Yes No 5 1 Scroll to Main Motor Clutch Sol Tests and press Check the Remove the OK Registration MPT Chute 2 Select Main Motor MPT Sol and press OK Sensor Assembly Do all of the following occur Registration RRP 4 1 on m The Feed R
67. sually specific making it important that service personnel and users record errors exactly when reporting problems with the printer Any error code associated with an error message or jam can be viewed by pressing the INFO key Jam error are displayed at the beginning of the info menu while engine errors are display at the end Some procedures require running Service Diagnostics tests to verify a specific printer assembly is operating correctly Refer to Service Diagnostics on page 2 7 To troubleshoot problems not associated with a front panel error message or code such as ac power or problems related to print quality refer to the section Troubleshooting on page 3 1 Phaser 4400 Laser Printer Service Manual 2 1 Service Flowchart The Service Flowchart outlines one possible approach to troubleshooting and repair of the printer The Service Flowchart is an overview of the path a service technician could take using this technical manual to service the printer and options If you choose not to use the Service Flowchart it is recommended that you start at the appropriate troubleshooting table and proceed from there Step 1 Identify the Problem Verify the reported problem does exist Check for any error codes and write them down Print Test Prints Make note of any print quality problems in the Test Prints Make note of any mechanical or electrical abnormalities present Make note of any unusual noise o
68. t Open ISSS Sensor Rear Cover To Clear on 2 Exit Sensor on at Page 2 25 power on E4 3 Exit Jam Custom Paper late Open Rear Cover off Exit Sensor exceeding the specified time from Registration Sensor Clear Paper Path Change Paper Setting in Custom Mode to correct size Go to Jam At Exit Open Rear Cover To Clear on page 2 25 Jam At Stacker Open Both Rear Covers to Clear Press i E6 1 Stacker Jam 1 Paper late to Stacker Sensor E6 2 Stacker Jam 1 Paper late off Stacker Sensor 2 Stacker Sensor on at power on Open Stacker Rear Door Clear Paper Path Open Printer Rear Cover Clear Paper Path Go to Jam at Stacker Open Both Rear Covers to Clear on page 2 27 Phaser 4400 Laser Printer Service Manual 2 13 Error Message Summaries cont d Note The messages listed in the Diagnostic Message column appear only in Service Diagnostics while printing Engine Test Prints The code numbers in these messages also appear as part of the Help information displayed when you press i Front Panel Message Diagnostic Message Error Description Troubleshooting Procedure Jam At Front Open Front Cover To Clear E7 0 Duplex Jam Paper arrives at Registration Sensor early from Duplex Sensor Open front cover Remove print cartridge Clear paper path Press i Go to Jam at Front Rear Open Front Rear Cover to Clear on page 2
69. tate smoothly bly RRP 6 2 on page 6 66 4 Check the paper in all trays Replace with Go to step 5 Is the paper loaded in the paper trays damp E dry wrinkled or damaged Phaser 4400 Laser Printer Service Manual 2 23 Registration Jam Troubleshooting Procedure cont d Step Actions and Questions Yes No 5 Is the paper size used within specifications Go to step 6 Replace with paper meet ing size speci fications 6 1 Reinstall the Fuser Go to step 7 Goto 2 Close the Rear Cover Registration 3 Cheat the Front Cover Interlock Clutch on 4 Enter Service Diagnostics select Clutch Tests and page 3 27 press OK 5 Select Registration and press OK Can you hear the Registration Clutch energize 7 1 Press Back to return to the top Diagnostics menu Go to step 9 Goto step 8 then select Main Motor Clutch Sol tests and press OK 2 Select Motor Registration and press OK Do the Registration Rolls rotate smoothly 8 Repair or replace as necessary m Registration Rolls RRP 5 6 on page 6 62 m Registration Clutch RRP 5 5 on page 6 62 m Main Drive Gear Assembly RRP 8 2 on page 6 85 m Main Motor Assembly RRP 8 1 on page 6 84 9 Perform Registration Sensor on page 3 20 to test the Go to step Repair or Registration Sensor 10 replace the Is the Registration Sensor working correctly gorn ensor as necessary RRP 5 4 on page 6 61 10 Perform Exit Sensor on page 3 34 to test the Exit Go to s
70. tep Replace the Sensor 11 Fuser Assem Is the Exit Sensor working correctly bly RRP 6 2 page 6 66 11 1 Enter Service Diagnostics if necessary Go to step Clean the 2 Select Engine Test Print and press OK 12 Registration 3 Run test prints Rollers 4 When the error code appears inspect the position of lead edge of the paper Does the lead edge of the paper pass between the Transfer Roller and the Print Cartridge Drum 12 Is the Detack Saw clean and free of Go to step Clean the contamination 13 Detack Saw or Replace the Transport Chute Assembly RRP 6 1 on page 6 65 2 24 Phaser 4400 Laser Printer Service Manual Registration Jam Troubleshooting Procedure cont d Step Actions and Questions Yes No 13 Inspect paper path between Transport Chute Assembly Replace the Replace the and the Fuser Assembly Engine Logic Fuser Does the paper pass through the Fuser oe RRP Assembly Assembly 3 on RRP 6 2 on page 6 89 page 6 66 Jam At Exit Open Rear Cover To Clear E4 Exit Jam E4 0 Paper leaves the Exit Sensor early E4 2 Paper leaves the Exit Sensor late The Exit Sensor is on at power on E4 3 Custom paper late off the Exit Sensor within a specified time from the Registration Sensor Exit Jam Troubleshooting Procedure Step Actions and Questions Yes No 1 Check the paper in the paper trays Ensure that Go to step 2 Install fresh m The paper is installed correctly and the end
71. the Motor clockwise Assembly Does the rotor of the Main Motor rotate RRP 6 2 on smoothly page 6 66 4 Remove the Main Motor RRP 8 1 on page 6 84 Replace the Replace the Manually rotate the rotor of the Motor clockwise Main Drive Main Motor Does the rotor of the Main Motor rotate Gear RRP 8 1 on smoothly Assembly page 6 84 RRP 8 2 on page 6 85 5 Open the Front Cover and remove the Print Cartridge Go to step 6 Replace the Rotate the Metal Registration Roller manually Registration Do the Metal and Rubber Registration Rolls ae RRP rotate smoothly on page 6 62 or clutch RRP 5 5 on page 6 62 as necessary 6 1 With the Front Cover open cheat the Front Cover Go to step 7 Goto RRP Interlock 8 1 on 2 Enter Service Diagnostics and select Motor Fans page 6 84 Tests and RRP 8 2 3 Scroll to Main Motor and press OK on i 4 Visually inspect the Main Motor and Main Drive 6 8 Gears page 6 85 Do the Main Motor and drive gears run smoothly and are all drive gears in good condition 7 1 Press the Back key twice to return to top Menu Go to step 8 Replace the 2 Select Main Motor Clutches Sol Tests MPT Feed 3 Scroll to Motor MPT Sol and press OK Roller Does the MPT Feed Roller Assembly rotate components smoothly as necessary RRP 4 2 page 6 45 RRP 4 3 page 6 47 8 Scroll to Motor Tray 1 Turn Roll and press OK Go to step 9 Repair or Note If optional feeders are installed all turn rollers replace e should actuate w
72. the actuator 4 1 Switch the printer power OFF Go to step 6 Go to step 5 2 Remove the Left Interface Cover RRP 1 1 on page 6 6 Left Cover RRP 1 2 on page 6 7 and the Left Plate RRP 1 11 on page 6 16 3 Switch the printer power on 4 On the Engine Logic Board check the voltage between P J33 pin 8 and frame ground Is the voltage 3 3 VDC 5 On the Engine Logic Board check the voltage between Replace the Replace the P J28 pin 10 and frame ground Engine Logic LVPS RRP Board RRP 9 5 on Is the voltage 3 3 VDC 9 3 on page 6 91 page 6 89 6 1 Enter Service Diagnostics and select Sensor Tests Replace the Replace the 2 Scroll to Tray 2 or Tray 3 Low Paper Sensor and Engine Logic Low Paper press OK Board RRP Sensor 3 As you actuate the Low Paper Sensor check the 9 3 on RRP 11 14 It t the following locati the Engi f aan Bpr e following locations on the Engine page 6 89 page 6 133 mFor Tray 2 check between P J33 pin 9 and frame ground mFor Tray 3 check between P J33 pin 10 and frame ground Does the voltage change from 3 3 VDC to 0 0 VDC affected tray If the problem persists replace the Feeder PWB RRP 11 9 page 6 128 then the Size PWB RRP 11 19 page 6 139 2 40 Phaser 4400 Laser Printer Service Manual No Paper in Tray A tray Tray 1 Tray 2 or Tray 3 incorrectly indicates that it is empty Tray Empty Troubleshooting Procedure
73. the printer free of jammed paper paper obstructions scraps or other obstructions from the printer and the Stacker 2 1 Enter Service Diagnostics Go to step 3 Problem 2 Select Engine Test Print and press OK solved 3 Scroll to Print Quantity and press OK 4 Set the quantity 15 and press Back 5 Scroll to Output Tray and press OK 6 Press Down to select Stacker and press OK 7 Scroll to Print Test Pattern and press OK Does the error code reappear 3 1 Enter Service Diagnostics and select Sensor Tests Go to step 5 Goto step 4 2 Scroll to Stacker Sensor test and press OK 3 Open the Stacker Rear Cover 4 Press and release the Stacker Exit Sensor Actuator Does the message on the display alternate between With Paper and Without Paper as you press and release the actuator 4 1 Remove the Left Interface Cover RRP 1 1 on Replace the Replace the page 6 6 Left Cover RRP 1 2 on page 6 7 andthe Engine Logic Stacker Exit Left Plate RRP 1 11 on page 6 16 Board RRP Sensor RRP 2 On the Engine Logic Board check the voltage 9 3 on 10 11 on between P J35 pin 7 and frame ground as you 4 e 6 89 aa e 6 111 actuate and deactuate the Stacker Exit Sensor pag pag 3 Actuator If the problem Is the voltage 3 3 VDC when deactuated and persists 0 0 VDC when actuated replace the Stacker PWB RRP 10 7 on page 6 107 5 1 Exit Sensor Tests and scroll to Motors Fans Tests Go to step 8 Goto step 6 2 Scroll to Stacker Mot
74. ting connector on the Tray 2 feeder and frame ground Is the voltage 24 VDC 5 1 Remove paper tray 1 Go to step 6 Replace the 2 Check the voltage between the bottom terminal on Tray 1 Size the mating connector on the Tray 1 feeder and frame PWB RRP ground 3 13 on Is the voltage 24 VDC page 6 42 If the problem persists replace the Tray 1 Feeder PWB RRP 3 9 on page 6 36 6 Check the resistance between the bottom and top Go to step 7 Replace the terminals of the mating connector on paper tray 1 paper tray Is there continuity between the two pins mating connector PL 2 2 on page 7 8 2 52 Phaser 4400 Laser Printer Service Manual Tray 2 or 3 Failure Troubleshooting Procedure cont d Step Actions and Questions Yes No 7 Check that the paper tray mating connector and the Replace the Repair or feeder mating connector are properly aligned when tray Tray 1 Size replace 1 is inserted into the feeder PWB RRP components g 3 13 on as Are the mating connectors properly connected when the paper tray is inserted page 6 42 If necessary the problem persists replace the Tray 1 Feeder PWB RRP 3 9 on page 6 37 8 Check the resistance between the bottom and top Go to step 9 Replace the terminals of the mating connector on the paper tray 2 paper tray Is there continuity between the two pins mating connector PL 2 2 on page 7 8 9 Check that the paper tray mating connector and the Replace the Repa
75. ure Step Actions and Questions Yes No 1 Switch the printer power OFF then ON Go to step 4 Goto step 2 Does the Fan rotate when the main power is switched on 2 1 Switch the printer power OFF Replace the Go to step 3 2 Remove the Left Interface Cover RRP 1 1 Fan page 6 6 Left Cover RRP 1 2 page 6 7 and Left Assembly Plate RRP 1 11 page 6 16 RRP 9 1 on 3 Switch the printer power on age 6 87 4 On the LVPS check the voltage between P J283 pin pag 1 and frame ground Is the voltage 19 1 9 VDC 3 Check the voltage between P J281 pin 13 and frame Replace the Replace the ground LVPS RRP Engine Logic 9 5 on Board RRP Is the voltage 0 8 0 1VDC7 page 6 91 9 3 on page 6 89 Phaser 4400 Laser Printer Service Manual 2 49 Fan Failure Troubleshooting Procedure cont d Step Actions and Questions Yes No 4 1 Enter Service Diagnostics and select Motors Fans Go to step 7 Go to step 5 Tests 2 Scroll to Fan Motor High Speed and press OK Does the Fan rotate at high speed 5 1 Switch the printer power OFF Replace the Goto step 6 2 Remove the Left Interface Cover RRP 1 1 Fan page 6 6 Left Cover RRP 1 2 page 6 7 and Left Assembly Plate RRP 1 11 page 6 16 RRP 9 1 on 3 Enter Service Diagnostics and select Motors Fans ada 6 87 Tests and press OK pag 4 Scroll to Fan Motor High Speed and press OK 5 On the LVPS check the voltage between P J283 pin 1 and fram
76. ve the Front Cover p open page 6 89 4 Disconnect P J25 from the Engine Logic Board 5 On the Engine Logic Board check for continuity between J21 4 and J25 3 and J25 2 and J25 1 as you insert and remove the Print Cartridge Is there continuity between J25 4 and J25 3 and J25 2 and J25 1 when you insert the cartridge and no continuity when you remove the cartridge 5 Is the Print Cartridge a Xerox Phaser 4400 Print Replace the Replace Cartridge Print Print Cartridge Cartridge Sensor with a Xerox Assembly Phaser 4400 together with Print the harness Cartridge PL RRP 7 40n 8 1 0n page 6 81 page 7 20 Phaser 4400 Laser Printer Service Manual 2 33 Replace Print Cartridge J5 Toner Low The Print Cartridge is in a low toner condition Print Cartridge Low Toner Troubleshooting Procedure Step Actions and Questions Yes No 1 Install a new Print Cartridge Go to step 2 Problem Does the Replace Print Cartridge message still solved appear 2 1 Remove the Front Cover RRP 1 6 on page 6 11 and Go to step 5 Goto step 3 the Left Front Cover RRP 1 7 on page 6 12 2 Cheat the Front Cover Interlock Switch 3 On the Connector PWB check the voltage between P J42 pin 4 and frame ground Is the voltage 0 0 VDC with the print cartridge installed and 3 3 VDC with the print cartridge removed 3 Check the voltage between P J42 pin 3 and pin 1 Replace the Go to step 4 Toner Sensor Is the voltage 24 VDC7
77. ved 12 1 Exchange Tray 1 with the Tray generating the C3 Go to step Go to step code 19 13 2 Print a test print from each tray Does the error code now indicate a Tray 1 failure 13 Does the error code indicate a Tray 2 failure Go to step Go to step 16 14 14 1 Remove Tray 3 from the feeder Go to step Go to step 2 Check the voltage between the lower terminal on the 18 15 Paper Feeder Connector and frame ground Is the voltage 24 VDC 15 Check the wiring harness between the Tray 2 Size Replace the Replace the PWB P J53 and the Tray 3 Size PWB P J54 Tray 3 Size Size Harness p PWB RRP Assembly Is the harness in good condition 11 19 on PL 11 1 on page 6 139 T then the Tray page 7 27 3 Feeder PWB RRP 11 9 on page 6 128 2 44 Phaser 4400 Laser Printer Service Manual Tray Failure Troubleshooting Procedure cont d Step Actions and Questions Yes No 16 1 Remove Tray 2 from the feeder Go to step Go to step 2 Check the voltage between the lower terminal onthe 18 17 Feeder Connector and frame ground Is the voltage 24 VDC 17 Check the wiring harness between the Tray 1 Size Replace the Replace the PWB P J51 and the Tray 2 Size PWB P J52 Tray 2 Size Size Harness z oe PWB RRP Assembly Is the harness in good condition 11 19 on PL 11 1 on page 6 139 page 7 27 then the Tray 2 Feeder PWB RRP 11 9 on page 6 128 18 Replace the following components in order until the pro
78. vice Use Only The Service menu functions are to be used by Xerox service personnel and authorized service providers The printer can be damaged by improper use of the built in service tests s4400_328 Phaser 4400 Laser Printer Service Manual Using the Front Panel with Service Diagnostics The keys on the Front Panel provide the user interface for Service Diagnostics The keys and their functions are shown in Front Panel Configuration on page 1 8 After you enter Service Diagnostics the Up and Down keys allow you to move or scroll the highlight up and down through a menu When you have highlighted the item you want to select press OK to enter the selection When you are selecting a page quantity inthe Engine Test Print menu use the OK key to move the highlight to the right then use the Up or Down key to change the value of the selected digit when you have entered the desired quantity use the Back key to enter the selection Note If you moved past the digit you want to change keep pressing the OK key until the highlight wraps to the desired digit In most of the Service Diagnostics menus use the Back key to exit a menu to the level just above In most cases scrolling to the end of a menu and selecting Exit takes you back to the Service Diagnostics Main Menu When you select Read Fuser Temperature from the General Status menu the temperature is presented in hex values The following table lists the temperatures that correspond t

Phaser 4400 Laser Printer Service Manual

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