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K Service Source
LaserWriter Select
LaserWriter Select 300, LaserWriter Select 310, LaserWriter Select 360
K Service Source
Basics
LaserWriter Select
Basics
Paper Path - 1
Paper Path
There are three paper sources and one output tray in a complete system.
Output Tray Manual Feed Tray
Optional Sheet Feeder (250 or 500 Sheets)
Standard Cassette (250 Sheets)
Basics
Sensing System - 2
Sensing System
There are four paper sensors in the LaserWriter Select printer. Each sensor consists of an actuator, a U-shaped photo interrupter, and circuitry that communicates back to the DC controller.
Paper Delivery Sensor PS201
Registration Sensor PS602 Manual Feed Sensor PS701 Paper-Out Sensor PS601
Basics
Interface Connectors - 3
Interface Connectors
Interface connector diagrams for each of three LaserWriter Select models are located on the following pages.
Basics
Interface Connectors - 4
LaserWriter Select 300
Mini DIN-8
Basics
Interface Connectors - 5
LaserWriter Select 310
Centronics Parallel
Mini DIN-8
Basics
Interface Connectors - 6
LaserWriter Select 360
RJ-11 (Optional Fax Port)
Centronics Parallel
Mode Switch RS-232
Mini DIN-8
Basics
LaserWriter Safety - 7
LaserWriter Safety
Unplug Printer LaserWriter printers operate at high voltages. To prevent serious injury, always switch off the printer and unplug the AC power cord before servicing the printer. Laser Beam Safety Never remove the cover of the laser/optic assembly or disconnect the beam-detect cabling when the printer is switched on. Although the reflected laser beam is invisible, direct exposure to it can permanently damage your eyes. Never disassemble the laser/optical assembly, whether the printer is powered on or not. The laser diode and focusing lenses are factory-aligned.
Basics Fuser Heat
LaserWriter Safety - 8
The fuser assembly rollers become very hot during printer operation. Before servicing the fuser assembly, switch off the printer for at least 5 minutes to allow the fuser assembly rollers to cool. Toner Safety Toner is a nontoxic substance composed of plastic, iron, and a small amount of pigment. Clean skin and clothing by removing as much toner as possible with a dry tissue and then washing with cold water. Hot water causes toner to jell and permanently fuse into clothing. Toner attacks vinyl materials, so don't allow toner to contact vinyl. Motor Stops When Cassette is Removed For safety purposes, the main motor on the LaserWriter
Basics
LaserWriter Safety - 9 Select 360 stops when the paper cassette is removed. Weight LaserWriter printers are heavy. When lifting or moving the printer, be careful not to strain your back.
K Service Source
Specifications
LaserWriter Select
Specifications
General - 1
General
Engine
Select 300/310: Fuji Xerox P0 engine Select 360: Fuji Xerox P1 engine Electrophotography using single-component dry toner Semiconductor laser Select 300/310: 300 dots per inch (dpi) Select 360: 600 dpi (300 dpi in PCL mode) Select 300: QuickDraw Select 310: PostScript Select 360: PostScript and HP PCL
Printing Method Optical System Resolution
Imaging Languages Supported
Specifications
Intro Dates - 2
Intro Dates
Select 300/310 500-Sheet Feeder Select 360
February 1993 August 1993 October 1993
Specifications
Logic Board - 3
Logic Board
CPU
Select 300: N/A Select 310: AMD Am29205; 16 MHz Select 360: AMD Am29200; 15 MHz Select 300: 512K, expandable to 1.5 MB or 4.5 MB Select 310: 1.5 MB, expandable to 5.5 MB Select 360: 7 MB (3 MB soldered on board), expandable to 16 MB Note: If you install a 16 MB RAM SIMM, the 3 MB of soldered RAM is not used.
DRAM
ROM
Select 300: 32K Select 310: 1 MB, expandable to 2 MB Select 360: 4 MB
Specifications
Logic Board - 4 Select 300: RS-422 Select 310: RS-232; Centronics parallel connector Select 360: RS-232; Centronics parallel connector; AppleTalk DIN-8
I/O
Specifications
Performance - 5
Performance
Print Delivery Life Expectancy
Face-down Select 300/310: 150,000 pages Select 360: 300,000 pages Select 300/310: 5 pages-per-minute maximum; actual performance depends on the application. Select 360: 10 pages-per-minute maximum; actual performance depends on the application.
Printing Speed
Specifications
Built-In-Fonts - 6
Built-In-Fonts
LaserWriter Select 300
39 fonts from the following font families: Avant Garde, Bookman, Chicago, Courier, Geneva, Helvetica, Helvetica Narrow, Monaco, New Century Schoolbook, New York, Palatino, Symbol, Times, Zapf Chancery, and Zapf Dingbats. 13 fonts from the following font families: Courier, Helvetica, Times, and Symbol. Additional PostScript fonts can be downloaded to printer memory. Fonts from the following font families: Avant Garde, Bookman, Courier, Helvetica, Helvetica Narrow, New Century Schoolbook, Palatino, Symbol, Times, Zapf Chancery, and Zapf Dingbats.
LaserWriter Select 310
LaserWriter Select 360
Specifications
Electrical - 7
Electrical
Line Voltage
US/Japan:100-115 VAC, 50-60 Hz Europe/Australia:220-240 VAC, 50 Hz 450 W maximum at115 V or 220V
Power Consumption
Specifications
Physical - 8
Physical
Dimensions
Height: 8.0 in. (25.3 cm) Width: 15 in. (38 cm) Depth: 18.3 in. (45 cm) 26.4 lbs. (12 kg)
Weight
Specifications
Environmental - 9
Environmental
Temperature Humidity
50° - 90.5°F (10° - 32.5°C) 20% - 80% relative humidity
Specifications
Paper - 10
Paper
Paper Weights
Cassette feed: 20 lb., single-sheet, photocopy bond Manual feed: 20-28 lb., letterhead and colored stock, mediumweight transparency material, envelopes, and labels 250-sheet universal cassette: US letter, A4, B5, executive 250-sheet legal cassette (optional) 500-sheet cassette (optional): US letter, A4, and B5 Envelope cassette (optional) Cassette: 250 or 500 sheets Manual: Single sheet Envelope: 30 envelopes Face-down tray: 150 sheets
Cassette Size
Capacity In
Capacity Out
K Service Source
Troubleshooting
LaserWriter Select
Troubleshooting
General - 1
General
Troubleshooting contains quick-reference troubleshooting information for the LaserWriter Select. We encourage you to review and print out this chapter before troubleshooting a printer. At the end of this chapter are troubleshooting flowcharts and tables. If a table name clearly addresses your problem, you can go directly to that table. If not, you should go to the flowchart associated with the version of the printer you are working on.
Troubleshooting
Troubleshooting Tips - 2
Troubleshooting Tips
Multimeter Probes
When taking voltage and resistance readings, you will need to use special multimeter probes. The connectors within the LaserWriter Select are very small and require sharp needlepoint probes to make good contact. Do not use probes that do not make proper contact.
Printer Overheating
To prevent possible overheating, do not run the LaserWriter Select 360 printer for longer than 10 minutes with the covers removed, and be sure to keep all vents clear.
Troubleshooting
Service Test Page - 3
Service Test Page
The LaserWriter Select service test page consists of a line matrix. The LaserWriter Select printers produce a service test page when you jumper the two pins at connector P32 on the DC controller board. The test page confirms print engine operation.
DC Controller Board
Screwdriver or Paper Clip
P32
Troubleshooting
Service Test Page - 4 If the I/O controller mount is installed, you can access P32 by inserting the straightened end of a paper clip through the small access hole in the rear face of the I/O controller mount. Caution: If you want to run a service test page while the printer is in an open test-ready state, you must manually actuate the delivery sensor, otherwise a paper jam will occur. See "TestReady Configuration" in this chapter.
Troubleshooting
Test-Ready Configuration - 5
Test-Ready Configuration
Paper delivery sensor PS201 is connected to the I/O controller mount. When you remove the mount to troubleshoot inside the printer or to run a service test page, you must reconfigure the sensing system to simulate an operational printer.
Troubleshooting
Test-Ready Configuration - 6 To reconfigure the sensing system, remove the I/O controller mount and set it at an angle on top of the power supply. Position the mount so that connector P32 on the DC controller board is accessible. Insert a folded piece of paper into the U of sensor PS201, and make sure that the two cables are securely attached to the I/O board. If you need to communicate with a Macintosh, you can do so by reconnecting the serial connector. Caution: Jumpering connector P32 initiates a service test page. If the printer is in a test-ready configuration, you must manually actuate this sensor as paper hits the delivery sensor actuator within the fuser assembly.
Troubleshooting
310/360 Power-On Self Test - 7
310/360 Power-On Self Test
The LaserWriter Select 310 and 360 go through a self diagnostic each time that you switch the printer on. This diagnostic is called the Power-On Self Test (POST). POST does not occur on the LaserWriter Select 300 printer. Note: This test is not the same as the engine diagnostic (see next topic). Unlike the engine diagnostic test, POST does not require the placement of any loopback cable. Observing how the LEDs extinguish from that point can help isolate certain failure areas.
· The Ready LED extinguishes when no errors are found on the I/O controller board.
· The Paper-Out LED then extinguishes when no errors are found on the RAM card.
Troubleshooting
310/360 Power-On Self Test - 8 · Finally the Jam LED extinguishes when no errors are found in the engine. In a functional printer, control will be passed on to the PostScript interpreter at the end of this sequence.
Troubleshooting
360 Printer Diagnostic - 9
360 Printer Diagnostic
Note: Only the LaserWriter Select 360 offers diagnostic LEDs. Switch off the LaserWriter Select 360 printer, and remove the jumper from JMP1 on the I/O controller if a jumper is present. Set the mode switch on the printer's back panel to 9. The reporting sequence (which repeats continuously) is as follows: · All LEDs are on for 1 second. · All LEDs are off for 1 second. · All LEDs are off for 1 second.
· The LED(s) that indicates the error is on for 1 second. Error configurations are shown on the next page.
Troubleshooting
360 Printer Diagnostic - 10
I/O Controller Error SIMM Error*
* A SIMM error can result from insufficient memory. You must have a minimum of 7 MB of RAM installed.
Engine Controller Error
Fuser Error Laser Error Engine Error
Troubleshooting
Circuit Board Diagrams - 11
Circuit Board Diagrams
Illustrations for the printed circuit boards below are located on the following pages. · LaserWriter Select 300 I/O Controller Board · LaserWriter Select 310 I/O Controller Board · LaserWriter Select 360 I/O Controller Board · LaserWriter Select 360 DC Controller Board · Cassette Feeder Board Diagram · LaserWriter Select 300/310 DC Controller Board
· LaserWriter Select 300/310 High-Voltage Power Supply · LaserWriter Select 360 High-Voltage Power Supply · LaserWriter Select 360 Fax Card
Troubleshooting
Circuit Board Diagrams - 12
Select 300 I/O Controller Board
DRAM
P50
P51
SIMMs
Troubleshooting
Circuit Board Diagrams - 13
Select 310 I/O Controller Board
ROMs (1 or 2) SIMMs
J3
JP2
DRAM
Troubleshooting
Circuit Board Diagrams - 14
Select 360 I/O Controller Board
P56
SIMMs
J3
JP2
J57
Troubleshooting
Circuit Board Diagrams - 15
Select 300/310 DC Controller Board
P18 P14 P15 P17 P16 P19 P11 P31
P12 P13
P32
Troubleshooting
Circuit Board Diagrams - 16
Select 360 DC Controller Board
P18 P14 P15 P17 P16 P20 P19 P11 P31
P12 P13
P21
P32
Troubleshooting
Circuit Board Diagrams - 17
Cassette Feeder Board Diagram
P115
SW1 SW2 SW3 SW4
P116
P202 P201
Troubleshooting
Circuit Board Diagrams - 18
Select 300/310 High Voltage Power Supply
TR CR
DB
RTN1
RTN2
P111
Troubleshooting
Circuit Board Diagrams - 19
Select 360 High Voltage Power Supply
TR CR
DB
RTN1
RTN2
P11
Troubleshooting
Circuit Board Diagrams - 20
Select 360 Fax Card
RJ-11
Battery Volume Control
Speaker
J1
Troubleshooting
Wiring Diagram - 21
Wiring Diagram
The LaserWriter Select wiring diagram can be found on the next page. The detail in this document is too small to read easily at 100% view. You should either zoom into the diagram using the zoom tool above, or print the diagram on a laser printer with a resolution of 300 dpi (600 dpi preferred).
J115 P115
LED STATUS PANEL
PS601 PAPER-OUT SENSOR
SIZING SWITCHES 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12
5VA 5VA GND GND J51
5VA READY/IN-USE PAPER-OUT JAM
5 4 3 2 1
GREEN RED RED
4 3 2 1 JP2
5 4 3 2 1 J3
I/O BOARD J57
NO PAPER 1 5V NO PAPER 2 GND SIZE 1 SIZE 2 24V /TURN 1 /TURN 2 24V /FEED 1 /FEED 2
1 2 3 4 5 6 7 8 9 10 11 12 1 2 P202 FEED SOLENOID
P116
Optional feeder components identical to main feeder
1 2 P201 PICKUP SOLENOID
1 2
1 2
FG
POWER SUPPLY
GND GND GND /CMD /CP RDY /START NC /SBSY /RDY /BD NC /PRFD /CCLK /VDO NC /CBSY /STA /TOP /PPRDY GND
J31
1 2
CASSETTE FEEDER
OPTIONAL FEEDER
LASER/OPTIC ASSEMBLY
3 4 P13
P11
P31 /HEAT GND VS GND 5VB 5VA GND RTN RTN 24V 24V 24V STS (GND) 1 2 3 4 5 6 7 P11 8 9 10 11 12 13 14
14
24V Supply
1 2 3 4 5 6 7 8 9 10 11 12 P13
BEAM DETECT
B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1
HEATER CNT
INTERLOCK SW
4 1 5 2 3 6 7 8 9 10 11 12 13
SCANNER MOTOR UNIT
LASER DRIVER
P113 3 2 1
P114 6 5 4 3 2 1
P112 1 2 3 4 5 6 7
24V RTN /MOT ON GND SPI1 SPI2
DC CONTROLLER BOARD
1 2
FAN
24V RTN
P101 J101 6 2 3 1 4 5
3 2 P18 1
3 2 1 P19
13 12 11 10 9 8 7 6 5 4 3 2 1 P12
P14 6 5 4 3 2 1
P32 2 1
P15 1 2 3 4 5 6 7 8 9 10 11
P17 2 1
P16 9 8 7 6 5 4 3 2 1
/B /A B A B-COM (24V) A-COM (24V)
/NO PAPER GND PULLUP 5V
/PREREG GND PULLUP 5V
DB
Rtn /DB /TR +//TR /CR-DC /CR-AC 24V
STS
RTN
P118 4 3 2 1
MANUAL FEED PICKUP SOLENOID
CRU FUSER ASSEMBLY 100-120V Pin 2 Pin 3 Heater NC 220-240V NC Heater MAIN MOTOR Paper Delivery Guide Transfer Roller Paper Charge Deflector DB CR RTN TR RTN HIGH-VOLTAGE POWER SUPPLY
P111
S100
S101
1 2 3 P121 PS701 MANUAL FEED SENSOR
1 2 3 P120
TONER CARTRIDGE SENSOR BOARD
PS602 PS201 REGISTRATION PAPER DELIVERY SENSOR SENSOR
/EXIT GND PULLUP 5V 1 2 3 P119
Heater Bulb
5VB 5V EP Check GND
/FEED 24V
TONER CARTRIDGE
HIGH-VOLTAGE CONTACT ASSEMBLY
5VB GND VL1 VL2 MO 5VA /P DATA P21 1 2 3 4
5V /SOS GND
Troubleshooting
Flowcharts and Tables
LaserWriter Select 300 Flowchart 1
START
1. Connect the printer to a Macintosh computer that is using the LaserWriter Select 300 driver. 2. Open the printer and remove any paper jams. 3. Install the toner cartridge and fill the cassette tray. 4. Switch on the printer and the Macintosh computer and wait 2 minutes. 5. Issue a Print Window or Print Directory command.
Does the printer print from a Macintosh? Yes
No
Go to LaserWriter Select 300 Flowchart 2.
Is the print quality OK?
No
Go to "Print Quality Problems."
Yes The printer is fully functional.
Troubleshooting
Flowcharts and Tables
LaserWriter Select 300 Flowchart 2
START
1. Switch off the printer and disconnect it from the Macintosh computer. 2. Remove the top cover, rear cover, and side covers. 3. Remove the I/O shield and I/O board. 4. Plug in and switch on the printer.
Does the fan come on?
No
Go to Table 2, No Power to Fan.
Yes
Does the fuser bulb glow every few seconds during startup? Yes
No
Go to Table 3, Fuser Assembly Failure.
Does the main motor rotate sometime after startup?
No
Go to Table 1, Main Motor Failure.
Yes Initiate a service test page.
A
Troubleshooting
Flowcharts and Tables
LaserWriter Select 300 Flowchart 2 (Continued)
A
Go to Table 27, 28, 29, or 30, depending on the specific paper transport problem. Yes
Did the printer deliver a service test page?
No
Did the paper jam inside the printer? No Go to Table 4 or 5, depending on the specific laser/ scanner malfunction.
Yes
Is the print quality OK?
No
Go to "Print Quality Problems."
Yes 1. Make sure cable connections are correct, secure, and undamaged. 2. Confirm that the proper print driver is installed. 3. If the printer is connected to the Macintosh printer port, open the Chooser and make AppleTalk inactive. 4. If the problem persists, replace the I/O board.
Troubleshooting
Flowcharts and Tables
LaserWriter Select 310 Flowchart 1
START
1. Connect the printer to a Macintosh computer that is using the LaserWriter Select 310 driver. 2. Open the printer and remove any paper jams. 3. Install the toner cartridge and fill the cassette tray. 4. Switch on the printer and the Macintosh computer and wait 2 minutes.
Does the Ready LED glow steadily after warmup? Yes
No
Go to LaserWriter Select 310 Flowchart 2.
Open the File menu and choose Print Window or Print Directory.
Does the printer print from a Macintosh? Yes Is the print quality OK? Yes
No
Go to Table 7 or 8, depending on the specific I/O board error.
No
Go to "Print Quality Problems."
1. Place paper on the manual feed tray. 2. Open the File menu and choose Print Window or Print Directory. 3. Select Manual Feed as the paper source in the Print dialog box.
Does the printer deliver a manually fed page? Yes The printer is fully functional.
No
Go to Table 30, No Paper Pickup From Manual Feed or Multipurpose Tray.
Troubleshooting
Flowcharts and Tables
LaserWriter Select 310 Flowchart 2
START
Is the Paper-Out LED on?
Yes
Go to Table 13, Paper-Out LED Lights When There Is Paper.
No Go to Table 27, 28, 29, or 30, depending on the specific paper transport problem. Yes Is the paper jammed inside the printer? No Go to Table 14, Paper-Jam LED Lights But No Jam Has Occurred.
Is the Paper-Jam LED on?
Yes
No
1. Switch off the printer and disconnect it from the Macintosh computer. 2. Remove the top cover, rear cover, and side covers. 3. Remove the I/O shield and the I/O board. 4. Plug in and switch on the printer.
Does the fan come on?
No
Go to Table 2, No Power to Fan.
Yes A
Troubleshooting
Flowcharts and Tables
LaserWriter Select 310 Flowchart 2 (Continued)
A
Does the fuser bulb glow every few seconds during startup? Yes
No
Go to Table 3, Fuser Assembly Failure.
Does the main motor rotate sometime after startup?
No
Go to Table 1, Main Motor Failure.
Yes Initiate a service test page.
Go to Table 27, 28, 29, or 30, depending on the specific paper transport problem. Yes
Did the printer deliver a service test page?
No
Did the paper jam inside the printer? No Go to Table 4 or 5, depending on the specific laser or scanner problem.
Yes
Is the print quality OK?
No
Go to "Print Quality Problems."
Yes B
Troubleshooting
Flowcharts and Tables
LaserWriter Select 310 Flowchart 2 (Continued)
B
1. 2. 3. 4. 5.
Switch off the printer. Replace the I/O board, I/O shield, and covers. Reconnect the printer to a Macintosh computer. Switch on the printer and the computer. Open the File menu and choose Print Window or Print Directory.
Is a printout of the active window produced?
No
Go to Table 7 or 8, depending on the specific I/O board problem.
Yes 1. Place paper on the manual feed tray. 2. Open the File menu and choose Print Window or Print Directory. 3. Select Manual Feed as the paper source in the Print dialog box.
Is a printout of the active window produced?
No
Go to Table 30, No Paper Pickup From Manual Feed or Multipurpose Tray.
Yes The printer is fully functional.
Troubleshooting
Flowcharts and Tables
LaserWriter Select 360 Flowchart 1
START
Run the LaserWriter Select 360 printer diagnostic (see "Printer Diagnostics" section). Replace modules as indicated in the "Printer Diagnostics" section. If no specific error is indicated during the diagnostic, switch off the printer, jumper the pins at JMP1 on the I/O controller, and return the mode switch to its original setting.
Does the Ready/In Use LED glow steadily after warmup? Yes
No
Go to Flowchart 2.
Open the File menu and choose Print Window or Print Directory.
Does the printer print from a Macintosh? Yes Is the print quality OK?
No
Go to Table 7 or 8, depending on the specific I/O board error.
No
Go to "Print Quality Problems."
Yes 1. Place paper on the manual feed tray. 2. Open the File menu and choose Print Window or Print Directory. 3. Select Manual Feed as the paper source in the Print dialog box.
Does the printer deliver a manually fed page? Yes The printer is fully functional.
No
Go to Table 30, No Paper Pickup From Manual Feed or Multipurpose Tray.
Troubleshooting
Flowcharts and Tables
LaserWriter Select 360 Flowchart 2
START
Is the Paper-Out LED on?
Yes
Go to Table 23, Paper-Out LED Lights When There Is Paper.
No Go to Table 27, 28, 29, or 30, depending on the specific paper transport problem. Yes Is the paper jammed inside the printer? No Go to Table 24, Paper-Jam LED Lights But No Jam Has Occurred.
Is the Paper-Jam LED on?
Yes
No
1. Switch off the printer and disconnect it from the Macintosh computer. 2. Remove the top cover, rear cover, and side covers. 3. Remove the I/O shield and the I/O board. 4. Close the front access door. 5. Plug in and switch on the printer.
Does the fan come on?
No
Go to Table 2, No Power to Fan.
Yes A
Troubleshooting
Flowcharts and Tables
LaserWriter Select 360 Flowchart 2 (Continued)
A
Does the fuser bulb glow every few seconds during startup? Yes
No
Go to Table 3, Fuser Assembly Failure.
Does the main motor rotate sometime after startup?
No
Go to Table 1, Main Motor Failure.
Yes Initiate a service test page.
Go to Table 27, 28, 29, or 30, depending on the specific paper transport problem. Yes
Did the printer deliver a service test page?
No
Did the paper jam inside the printer? No Go to Table 4 or 5, depending on the specific laser or scanner problem.
Yes
Is the print quality OK?
No
Go to "Print Quality Problems."
Yes B
Troubleshooting
Flowcharts and Tables
LaserWriter Select 360 Flowchart 2 (Continued)
B
1. 2. 3. 4. 5.
Switch off the printer. Reinstall the I/O board, I/O shield, and covers. Reconnect the printer to a Macintosh computer. Switch on the printer and the computer. Open the File menu and choose Print Window or Print Directory.
Is a printout of the active window produced?
No
Go to Table 6, 7, or 8, depending on the specific I/O board problem.
Yes 1. Place paper on the manual feed tray. 2. Open the File menu and choose Print Window or Print Directory. 3. Select Manual Feed as the paper source in the Print dialog box.
Is a printout of the active window produced?
No
Go to Table 30, No Paper Pickup From Manual Feed or Multipurpose Tray.
Yes The printer is fully functional.
Troubleshooting
Flowcharts and Tables
Important
As you proceed through the steps in a table, remember to retry the printer each time you change its physical statefor example, when you replace a module. If the problem remains, reinstall the original module before proceeding to the next step in the table. Refer as necessary to the wiring diagram that follows the tables.
Table 1. Main Motor Failure
Step 1 Check Is connector P14 on the DC controller board making good contact? Are there any obstructions in the drive assembly gear train or paper path? Inspect the drive assembly gear train and replace any damaged gears. (Check the gears on the drive assembly, the paper feed roller, and the cassette feeder assembly.) Does the problem persist? Switch off the printer and connect a multimeter between each of the following pairs of pins: · P14-1 (A-COM 24V) and P11-2 (GND) · P14-2 (B-COM 24V) and P11-2 (GND) Does the voltage measure approximately +24 VDC when you switch on the printer? Result No Action Reconnect P14 to the DC controller board. Remove the obstructions.
2
Yes
3
No
Problem solved.
4
No
Go to Table 11, Power Supply Failure (+24 VDC).
3
Troubleshooting
Flowcharts and Tables
Main Motor Failure (Continued)
Step 5 Check Switch off the printer and connect a multimeter between each of the following pairs of pins: · P14-1 (A-COM 24V) and P14-3 (A) · P14-1 (A-COM 24V) and P14-5 (/A) · P14-2 (B-COM 24V) and P14-4 (B) · P14-2 (B-COM 24V) and P14-6 (/B) Is the resistance approximately 5 ohms? Result No Action Replace the main motor.
Yes
Replace the DC controller board. If the problem persists, replace the main motor.
Table 2. No Power to Fan
Step 1 2 3 Check Is a toner cartridge installed in the printer? Is the AC outlet providing the correct voltage? Is connector P119 making good contact with the paper delivery sensor? Inspect the paper delivery sensor. Does the lever on the fuser assembly cover the paper delivery sensor when no paper is present and uncover the sensor when paper passes through the fuser assembly? Result No No No Action Install a toner cartridge. Try another AC outlet. Reconnect connector P119 to the paper delivery sensor. Install the paper delivery sensor so that it makes contact with the delivery sensor lever. If the problem persists, replace the delivery sensor lever.
4
No
Troubleshooting
Flowcharts and Tables
No Power to Fan (Continued)
Step 5 Check Connect a multimeter between each of the following sets of pins and check for the following voltages: P11-10 (+24 V, brown wire) and P11-2 (GND, black wire) +24 VDC P11-11 (+24 V, brown wire) and P11-2 (GND, black wire) +24 VDC P11-12 (+24 V, orange wire) and P11-2 (GND, black wire) +24 VDC P11-5 (+5 VB, yellow wire) and P11-2 (GND, black wire) +5 VDC P11-6 (+5 VA, blue wire) and P11-2 (GND, black wire) +5 VDC Are the voltages present when you switch the printer back on? 6 Switch off the printer, connect a multimeter between connectors P18-3 (+24V) and P18-2 (RTN) on the DC controller, and switch the printer back on. Is the voltage approximately +24 VDC? Yes Replace the fan. Result No Action Replace the power supply.
3
Troubleshooting
Flowcharts and Tables
No Power to Fan (Continued)
Step 7 Check Switch off the printer and disconnect connector P119 from the paper delivery sensor. Connect the multimeter between P119-2 (GND) and P119-3 (+5 VDC) and switch on the printer. Does the voltage measure approximately +5 VDC when you switch on the printer? Result No Action Check the cable connections between P119 and P16 on the DC controller board. If the connections are secure, replace the DC controller board.
Yes
Replace the paper delivery sensor.
Table 3. Fuser Assembly Failure
Step 1 2 Check Is a toner cartridge installed in the printer? Switch off the printer, connect a multimeter between pins J101-2 and J101-6 on the fuser assembly, and switch on the printer. Does the voltage measure between +90 and +132 VAC when you switch on the printer? Switch off the printer, disconnect connector P11 from the DC controller board. Measure the resistance between connector pins P11-13 (STS) and P11-14 (GND). Is the resistance between 200 k and 350 k at room temperature? Result No No Action Install a toner cartridge. Replace the power supply.
3
No
Replace the power supply.
Troubleshooting
Flowcharts and Tables
Fuser Assembly Failure (Continued)
Step 4 Check Measure the resistance between pins J101-2 and J101-6 on the fuser assembly. Is the resistance less than 10 ? Connect a multimeter between pins P11-1 (HEAT, red wire) and P11-2 (GND, black wire). Does the voltage measure about +4.2 VDC when you switch on the printer? Connect a multimeter between connector pins P11-1 (HEAT, red wire) and P11-2 (GND, black wire) on the DC controller board. When you open and close the front access door, does the voltage measure about +3.7 VDC with the door open and briefly drop to 0 VDC about five seconds after you close the door? Switch off the printer and disconnect P111 from the high-voltage power supply. Connect a multimeter between connector pins P11-5 (5 VB, yellow wire) and P11-2 (GND, black wire) on the DC controller board. Does the voltage measure about +5 VDC when you switch on the printer? Result No Action Replace the fuser heater bulb and the thermoprotector.
5
No
Replace the power supply.
6
No
Go to Table 9, Temperature Sensor Assembly Failure.
7
No
Replace the power supply.
3
Troubleshooting
Flowcharts and Tables
Fuser Assembly Failure (Continued)
Step 8 Check Switch off the printer and disconnect connector P12 from the DC controller board. Does the fuser heater bulb light when you switch on the printer? Switch off the printer and disconnect connector P15 from the DC controller board. Does the fuser heater bulb light when you switch on the printer? Connect the multimeter between pins P15-8 (5 VB, yellow wire) and P15-9 (5 V, orange wire) on the DC controller board. When you remove and insert the toner cartridge does the resistance change from 0 (cartridge inserted) to infinity (cartridge removed)? Connect the multimeter between pins P15-10 (EP CHECK, red wire) and P15-11 (GND, brown wire) on the DC controller board. When you remove and insert the toner cartridge, does the resistance change from 0 (cartridge inserted) to infinity (cartridge removed)? Result No Action Replace the laser/optic assembly.
9
Yes
Replace the DC controller board.
10
No
Replace the toner cartridge sensor assembly.
11
No
Replace the toner cartridge sensor assembly.
Troubleshooting
Flowcharts and Tables
Table 4. Laser Scanner Failure
Step 1 Check Are connectors P12 and P19 on the DC controller board properly seated? Switch on the printer, wait until the main motor stops rotating, and connect a multimeter between connector P12-11 (/MOT ON) on the DC controller board and chassis ground. Can you hear the scanner motor start to spin? Switch off the printer, connect a multimeter between connectors P11-4 (GND, black wire) and P11-5 (5 VB, yellow wire) on the DC controller board, and switch on the printer. Is the voltage approximately +5VDC? Switch off the printer and connect a multimeter between connectors P11-5 (5 VB, yellow wire) and P12-7 (5 VB, black wire) on the DC controller board. Is the resistance less than 5 ? Switch off the printer and connect a multimeter between connectors P12-7 (5 VB) and P12-6 (GND) on the DC controller board. Does the voltage measure +5 VDC when you switch on the printer? Result No Action Reconnect connectors P12 and P19 to the DC controller board. Go to Table 5, Scanner Assembly Failure.
2
No
3
No
Replace the power supply.
4
No
Go to Table 9, Toner Cartridge Sensor Failure.
3
5
Yes
Replace the laser/optic assembly.
No
Replace the DC controller board.
Troubleshooting
Flowcharts and Tables
Table 5. Scanner Assembly Failure
Step 1 Check Switch off the printer and connect a multimeter between connectors P12-13 (24 V) and P12-12 (RTN) on the DC controller board. Does the voltage measure about +24 VDC when you switch on the printer? Connect a multimeter between connectors P12-11 (/MOT ON) and P12-10 (GND) on the DC controller board and initiate a service test page. Does the voltage drop to less than +1 VDC during printing and rise to about +4 VDC when the printing stops? Result No Action Go to Table 11, Power Supply Failure (+24 VDC).
2
Yes
Replace the scanner assembly. If the problem persists, replace the laser and scanner motor cable. Replace the DC controller board.
No
Troubleshooting
Flowcharts and Tables
Table 6. Select 360 I/O Board Error
Step 1 2 Check Are the serial and/or parallel cables secure? If you are using a Macintosh, is the LaserWriter Select 360 driver installed in the System Folder? If you are using an IBM PC or compatible computer, check that the correct printer driver is installed. Has it been installed? Result No No Action Tighten the cable connections. Use the installation disk to install the appropriate driver in the System folder.
3
No
Install the correct Windows printer driver. Refer to the user's guide for more information.
3
Troubleshooting
Flowcharts and Tables
Select 360 I/O Board Error (Continued)
Step 4 Check If you are using a Macintosh, are the LaserWriter 8.0 driver (icon) and correct serial port selected? If you are using an IBM PC or compatible computer, is the Windows program open and active? If you are using a Macintosh, is background printing disabled? Result No Action Use the Chooser to select the LaserWriter 8.0 driver.
5
No
Make sure the window is open and the document window is active. Choose Print from the File menu, select the options you want, and click Print. Disable background printing (so that error messages display on the screen). Switch the printer off and on again. Install a different LaserWriter Select 360 I/O board.
6
No
Yes
Table 7. Select 310 or 360 I/O Board Error Serial Connection
Step 1 2 3 Check Is the serial cable connection secure? Is the serial cable good? Is the LaserWriter Select 360 driver installed in the System Folder? Are the correct LaserWriter Select driver and serial port selected? Is the printer connected to the printer port on the Macintosh? Is background printing disabled? Result No No No Action Tighten cable connections. Replace cable. Use the Installer to install the LaserWriter Select 360 driver in the System Folder. Use the Chooser to select the LaserWriter Select 310 or 360 driver and the port (printer or modem) to which the printer is connected. Make sure AppleTalk is inactive.
4
No
5
Yes
6
No
Disable background printing. If the problem persists, install a different LaserWriter Select 360 I/O board.
Troubleshooting
Flowcharts and Tables
Table 8. Select 310 or 360 I/O Board Error Parallel Connection
Step 1 Check Are the parallel cable connections correct and secure? Are the parallel cables and connectors good? Are the software and hardware properly configured to communicate with the parallel port on the printer? Result No Action Tighten cable connections.
2 3
No No
Replace the defective cables and connectors. Refer to the printer's owner's guide and the computer documentation for proper configuration. Switch the printer off and on again. If the problem persists, install a different I/O board.
Table 9. Temperature Sensor Assembly Failure
Step 1 Check After allowing the fuser assembly to cool to room temperature, remove the fuser assembly from the printer. Measure the resistance between J101-1 and J101-4 on the fuser assembly. Is the resistance between 200 k and 350 k? Result No Action Replace the sensor assembly.
3
Table 10. Toner Cartridge Sensor Failure
Step 1 Check Switch off the printer. Connect a multimeter between P15-8 (5 VB) and P11-2 (GND) on the DC controller board. Does the voltage measure +5 VDC when you switch on the printer? Result No Action Go to Table 12, Power Supply Failure (+5 VDC).
Troubleshooting
Flowcharts and Tables
Toner Cartridge Sensor Failure (Continued)
Step 2 Check Connect a multimeter between pins P15-8 (5 VB, yellow wire) and P15-9 (5 V, orange wire) on the DC controller board. When you remove and insert the toner cartridge, does the resistance change from 0 (cartridge inserted) to infinity (cartridge removed)? Connect a multimeter between pins P15-10 (EP CHECK, red wire) and P15-11 (GND, brown wire) on the DC controller board. When you remove and insert the toner cartridge, does the resistance change from 0 (cartridge inserted) to infinity (cartridge removed)? Remove the toner cartridge sensor cover and observe the toner cartridge sensor PCB and actuator. Does the actuator turn on switches S101 and S100 when you install a toner cartridge and turn off the switches when you remove the toner cartridge? 5 Is there continuity between connectors P15 on the DC controller board and P118 on the toner cartridge sensor board. Yes Replace the DC controller board. Result No Action Replace the toner cartridge sensor assembly.
3
No
Replace the toner cartridge sensor assembly.
4
No
Install a new toner cartridge. If switches S101 and S100 still do not turn on when you install the cartridge, replace the toner cartridge sensor assembly.
No
Replace the high-voltage/toner cartridge sensor cable.
Troubleshooting
Flowcharts and Tables
Table 11. Power Supply Failure (+24 VDC)
Step 1 Check Switch off the printer. Connect a multimeter between P11-12 (+24 VDC, orange wire) and P11-2 (GND, black wire) on the DC controller board. Switch on the printer. Is the voltage approximately +24 VDC? Switch off the printer. Connect a multimeter between P11-10 (+24 VDC, brown wire) and P11-2 (GND, black wire) on the DC controller board. Switch the printer back on. When you open and close the front access door, does the voltage measure 0 VDC with the door open and +24 VDC with the door closed? Switch off the printer. Connect a multimeter between P11-11 (+24 VDC, brown wire) and P11-2 (GND, black wire) on the DC controller board. Switch the printer back on. When you open and close the front access door, does the voltage measure 0 VDC with the door open and +24 VDC with the door closed? Result No Action Replace the power supply.
2
Yes
Replace the DC controller board.
3
Yes
Replace the DC controller board.
3
No
Replace the power supply.
Troubleshooting
Flowcharts and Tables
Table 12. Power Supply Failure (+5 VDC)
Step 1 Check Connect a multimeter between the following pairs of pins on the DC controller board: P11-5 (yellow wire) and P11-2 (black wire) P11-6 (blue wire) and P11-2 (black wire) Does the voltage measure +5 VDC when you switch on the printer? Result No Action Replace the power supply.
Yes
Replace the DC controller board.
Table 13. Paper-Out LED Lights When There Is Paper
Step 1 Check Is the paper cassette installed and does it contain paper? Remove the paper cassette tray and inspect the paper sensing arm. Does the paper sensing arm appear to be damaged? While the paper cassette tray is out, inspect the paper cassette size actuators. Do any of the actuators appear to be bent or damaged? While the paper cassette tray is out, switch on the printer. Insert the paper cassette tray. Does the main motor rotate when you insert the paper cassette tray? Result No Action Remove the paper cassette tray and fill it with paper. Reinstall the paper cassette tray and make sure it is seated properly. Replace the paper sensing arm.
2
Yes
3
Yes
Replace the cassette feeder board.
4
No
Replace the cassette feeder board.
Troubleshooting
Flowcharts and Tables
Paper-Out LED Lights When There Is Paper (Continued)
Step 5 Check Prepare the printer for troubleshooting as described in the "Troubleshooting Preparation" section. Disconnect P111 from the high-voltage power supply. Connect a multimeter between connector pins P13-1 (NOPAPER1) and P13-4 (GND) on the DC controller board. Remove and insert the paper cassette tray filled with paper. Does the voltage toggle from +5 VDC (tray removed) to 0 VDC (tray inserted)? 6 If an optional paper cassette is installed, connect a multimeter between connector pins p13-3 (NOPAPER2) and P13-4 (GND) on the DC controller board. Remove and insert the paper cassette tray filled with paper. Does the voltage toggle from +5 VDC (tray removed) to 0 VDC (tray inserted)? No Replace the cassette feeder board. If the problem persists, replace the expansion feeder cable. Result No Action Replace the cassette feeder board. If the problem persists, replace the cassette feeder tray cable.
Yes
Replace the DC controller board.
Yes
Replace the DC controller board.
3
Troubleshooting
Flowcharts and Tables
Table 14. Paper-Jam LED Lights But No Jam Has Occurred
Step 1 Check Is the paper cassette installed and does it contain paper? Check the fuser/delivery area or paper registration area for paper fragments. Are there any paper fragments or other obstructions? Is the cable that runs to the paper delivery sensor securely connected? Initiate a service test page and observe the action of the delivery lever on the fuser assembly. Does the delivery lever swing freely when it passes through the fuser assembly? 5 Open the front access door and locate the paper registration on the paper charge deflector. Is the paper sensing arm damaged or broken. Yes Replace the paper sensing arm. Result No Action Remove the paper cassette tray and fill it with paper. Reinstall the paper cassette tray and make sure it is seated properly. Remove the fragments or obstructions.
2
Yes
3
No
Reconnect the cable to the paper delivery sensor. Replace the delivery sensor lever.
4
No
Troubleshooting
Flowcharts and Tables
Paper-Jam LED Lights But No Jam Has Occurred (Continued)
Step 6 Check Prepare the printer for troubleshooting as described in "Troubleshooting Preparation." Disconnect connector P111 from the high-voltage power supply and connector P16 from the DC controller board. Connect a multimeter between P16-4 (PULLUP 5 V) and P16-5 (GND) on the DC controller board. Does the voltage measure +5 VDC when you switch on the power? 7 Switch off the printer and reconnect connector P16 to the DC controller board. Connect a multimeter between connector P16-6 (PregReg) and P16-5 (GND) on the DC controller board. Initiate a service test page. Does the voltage drop from +5 VDC to 0 VDC when the paper passes the paper registration sensor? Switch off the printer. Connect a multimeter between connector P16-3 (EXIT) and P16-2 (GND). Switch on the printer and manually actuate the paper delivery sensor by inserting a sheet of paper between the sensor arms. Does the voltage drop from +5 VDC to 0 VDC when you remove the paper from the sensor? No Go to Step 9. Result No Go to Step 9. Action
3
No Replace the paper delivery sensor. If the problem persists, replace the delivery sensor cable.
8
Troubleshooting
Flowcharts and Tables
Paper-Jam LED Lights But No Jam Has Occurred (Continued)
Step 9 Check Switch off the printer and connect a multimeter between the following pairs of pins on the DC controller board: P11-5 (yellow wire) and P11-2 (black wire) P11-6 (blue wire) and P11-2 (black wire) Does the voltage measure +5 VDC when you switch on the printer? Result No Action Replace the power supply
Yes
Replace the DC controller board.
The following graphic shows examples of image quality defects. Refer to the appropriate troubleshooting table to correct the quality of the image.
All-Blank Page See Table 15
All-Black Page Light/Faded Image See Table 17 See Table 16
Dark Image See Table 18
Black Vertical Line(s) See Table 19
White Vertical Line(s) See Table 20
Black Horizontal White Horizontal Lines Lines See Table 21 See Table 22
Ghosting See Table 23
Bad Fusing See Table 24
Blank Spots See Table 25
Toner on Back See Table 26
Troubleshooting
Flowcharts and Tables
Figure 31. Print Quality Problems Table 15. All-Blank Page
Step 1 Check Remove the toner cartridge from the printer. Is the toner cartridge sealing tape removed? Replace the toner cartridge. Does the print quality improve? Are the high-voltage contacts making good contact with the toner cartridge? Remove the toner cartridge from the printer. Is any foreign material blocking the laser beam outlet on the inside of the printer chassis? Is any foreign material adhering to the laser beam access slot on the toner cartridge? Inspect the drive assembly gear train. Are any gears damaged? Replace the transfer roller. Does the print quality improve? Connect the multimeter between connectors P15-7 and P15-1 on the DC controller board. Does the voltage measure +24 VDC when you switch on the printer? Result No Action Remove the sealing tape.
2
Yes
Problem solved.
3
No
Clean the contacts or replace the high-voltage contact assembly.
4
Yes
Remove the foreign material.
5
Yes
Replace the drive assembly.
3
6
Yes
Problem solved.
7
No
Go to Table 11, Power Supply Failure (+24 VDC).
Troubleshooting
Flowcharts and Tables
All-Blank Page (Continued)
Step 8 Check For Steps 8 and 9, remove the top covers, side covers, rear cover, I/O board mount, and the power switch lever. Remove the high-voltage contact assembly and check the continuity on all the high-voltage contacts. Do you find continuity on all the high-voltage contacts? 9 Is there continuity between connector RTN (red wire) on the high-voltage power supply and the red spade connector on the paper delivery guide? Replace the DC controller board. Does the print quality improve? No Replace the paper delivery guide. Result No Action Replace the high-voltage contact assembly.
10
Yes No
Problem solved. Replace the toner cartridge sensor and high-voltage power supply cable. If the problem persists, replace the high-voltage power supply.
Table 16. All-Black Page
Step 1 Check Replace the toner cartridge. Does the print quality improve? Are the high-voltage contacts making good contact with the toner cartridge? Result Yes Action Problem solved.
2
No
Clean the contacts or replace the high-voltage contact assembly.
Troubleshooting
Flowcharts and Tables
All-Black Page (Continued)
Step 3 Check Connect the multimeter between connectors P15-7 and P15-1 on the DC controller board. Does the voltage measure +24 VDC when you switch on the printer? Is there continuity between CRU (spring plate) on the high-voltage contact assembly and jack CR on the high-voltage power supply? Is there continuity between P15 on the DC controller board and P111 on the high-voltage power supply? Replace the DC controller board. Does the print quality improve? Result No Action Go to Table 11, Power Supply Failure (+24 VDC).
4
No
Replace the high-voltage contact assembly.
5
Yes
Replace the toner cartridge sensor and high-voltage power supply cable.
6
Yes No
Problem solved. Replace the high-voltage power supply.
3
Table 17. Light/Faded Image
Step 1 Check Replace the toner cartridge. Does the print quality improve? Reload the paper cassette tray with known-good paper. Does the print quality improve? Result Yes Action Problem solved.
2
Yes
Problem solved.
Troubleshooting
Flowcharts and Tables
Light/Faded Image (Continued)
Step 3 Check Remove the toner cartridge from the printer. Is any foreign material blocking the laser beam outlet on the inside of the printer chassis? Is any foreign material adhering to the laser beam access slot on the toner cartridge? Are the high-voltage contacts making good contact with the toner cartridge? Replace the transfer roller. Does the print quality improve? Connect the multimeter between connectors P15-7 and P15-1 on the DC controller board. Does the voltage measure +24 VDC when you switch on the printer? For Steps 7 and 8, remove the top cover, side covers, I/O board mount, and the power switch lever. Remove the high-voltage contact assembly and check the continuity on all the high-voltage contacts. Did you find continuity on all the high-voltage contacts? 8 Is there continuity between connector RTN (red wire) on the high-voltage power supply and the red spade connector on the paper delivery guide? No Replace the paper delivery guide. Result Yes Action Remove the foreign material.
4
No
Clean the contacts or replace the high-voltage contact assembly.
5
No
Problem solved.
6
No
Go to Table 11, Power Supply Failure (+24 VDC).
7
No
Replace the high-voltage contact assembly.
Troubleshooting
Flowcharts and Tables
Light/Faded Image (Continued)
Step 9 Check Replace the DC controller board. Does the print quality improve? Result Yes No Action Problem solved. Replace the toner cartridge sensor and high-voltage power supply cable. If the problem persists, replace the high-voltage power supply.
Table 18. Dark Image Over Entire Page
Step 1 Check Replace the toner cartridge. Does the print quality improve? Is the transfer roller dirty? Connect the multimeter between connectors P15-7 and P15-1 on the DC controller board. Does the voltage measure +24 VDC when you switch on the printer. Remove the top cover, side covers, rear cover, I/O board mount, and the power switch lever. Remove the high-voltage contact assembly and check the continuity on all the high-voltage contacts. Do you find continuity on all the high-voltage contacts? 5 Replace the DC controller board. Does the print quality improve? Yes No Problem solved. Replace the toner cartridge sensor and high-voltage power supply cable. If the problem persists, replace the high-voltage power supply. Result Yes Action Problem solved.
2 3
Yes No
Replace the transfer roller. Go to Table 11, Power Supply Failure (+24 VDC).
4
No
Replace the high-voltage contact assembly.
3
Troubleshooting
Flowcharts and Tables
Table 19. Black Vertical Lines
Step 1 Check Replace the toner cartridge. Does the print quality improve? Replace the transfer roller. Does the print quality improve? Remove the paper delivery guide. Is the static eliminator on the paper delivery guide properly grounded? Remove the fuser assembly and inspect the fuser heater roller. Are there scratches on the fuser heater roller? Result Yes Action Problem solved.
2
No
Connect the grounding contact to the static eliminator. Connect the grounding contact to the static eliminator.
3
No
4
Yes
Replace the fuser heater roller or the fuser assembly.
Table 20. White Vertical Lines
Step 1 Check Remove the toner cartridge from the printer. Is any foreign material blocking the laser beam outlet on the inside of the printer chassis? Inspect the paper path. Is any foreign material blocking the paper path? Replace the toner cartridge. Does the print quality improve? Replace the transfer roller. Does the print quality improve? Result Yes Action Remove the foreign material.
2
Yes
Remove the foreign material.
3
Yes
Problem solved.
4
Yes
Problem solved.
Troubleshooting
Flowcharts and Tables
White Vertical Lines (Continued)
Step 5 Check Remove the fuser assembly and heater roller. Are there scratches on the fuser heater roller? Replace the I/O board. Does the print quality improve? Result Yes Action Replace the fuser heater roller or the fuser assembly.
6
Yes
Problem solved.
Table 21. Black Horizontal Lines
Step 1 Check Replace the toner cartridge. Does the print quality improve? Are the high-voltage contacts making good contact with the toner cartridge? Replace the transfer roller. Does the print quality improve? Remove the fuser assembly and inspect the fuser heater roller. Are there scratches on the fuser heater roller? Connect the multimeter between connectors P15-7 and 15-1 on the DC controller board. Does the voltage measure +24 VDC when you switch on the printer? Result Yes Action Problem solved.
2
No
Clean the contacts or replace the high-voltage contact assembly.
3
Yes
Problem solved.
3
Yes Replace the fuser heater roller or the fuser assembly. No Go to Table 11, Power Supply Failure (+24 VDC).
4
5
Troubleshooting
Flowcharts and Tables
Black Horizontal Lines (Continued)
Step 6 Check Remove the top cover, side covers, rear cover, I/O board mount, and the power switch lever. Remove the high-voltage contact assembly and check the continuity on all the high-voltage contacts. Do you find continuity on all the high-voltage contacts? 7 Replace the DC controller board. Does the print quality improve? Replace the toner cartridge sensor and high-voltage power supply cable. Does the print quality improve? Replace the high-voltage power supply. Does the print quality improve? Replace the I/O board. Does the print quality improve? Yes Problem solved. Result No Action Replace the high-voltage contact assembly.
8
Yes
Problem solved.
9
Yes
Problem solved.
10
Yes
Problem solved.
Table 22. White Horizontal Lines
Step 1 Check Check the paper in the paper cassette tray for dampness. Is the paper damp? Replace the toner cartridge. Does the print quality improve? Result Yes Action Replace the paper.
2
Yes
Problem solved.
Troubleshooting
Flowcharts and Tables
White Horizontal Lines (Continued)
Step 3 Check Are the high-voltage contacts making good contact with the toner cartridge? Remove the toner cartridge from the printer. Is any foreign material blocking the laser beam outlet on the inside of the printer chassis? Is any foreign material adhering to the laser beam access slot on the toner cartridge? Replace the transfer roller. Does the print quality improve? Connect the multimeter between connectors P15-7 and P15-1 on the DC controller board. Does the voltage measure +24 VDC when you switch on the printer? For Steps 7 and 8, remove the top covers, rear cover, I/O board mount, and power supply switch lever. Remove the high-voltage contact assembly and check the continuity on all the high-voltage contacts. Do you find continuity on all the high-voltage contacts? 8 Is there continuity between connector RTN (red wire) on the high-voltage power supply and the red spade connector on the paper delivery guide? No Replace the paper delivery guide. Result No Action Clean the contacts or replace the high-voltage contact assembly.
4
Yes
Remove the foreign material.
5
Yes
Problem solved.
6
No
Go to Table 11, Power Supply Failure (+24 VDC).
7
No
Replace the high-voltage contact assembly.
3
White Horizontal Lines (Continued)
Troubleshooting
Flowcharts and Tables
Step 9
Check Replace the DC controller board. Does the print quality improve?
Result Yes No
Action Problem solved. Replace the toner cartridge sensor and high-voltage power supply cable. If the problem persists, replace the high-voltage power supply. Problem solved.
10
Replace the toner cartridge sensor and high-voltage power supply. Does the print quality improve? Replace the high-voltage power supply. Does the print quality improve? Replace the I/O board. Does the print quality improve?
Yes
11
Yes
Problem solved.
12
Yes
Problem solved.
Table 23. Ghosting
Step 1 Check Replace the toner cartridge. Does the print quality improve? Is the transfer roller dirty? Remove the fuser assembly and inspect the fuser heater roller and the fuser pressure roller. Are there scratches on either roller? Connect the multimeter between connectors P15-7 and P15-1 on the DC controller board. Does the voltage measure +24 VDC when you switch on the printer? Result Yes Action Problem solved.
2 3
Yes Yes
Replace the transfer roller. Replace the fuser heater roller, the fuser pressure roller, or the fuser assembly.
4
No
Go to Table 11, Power Supply Failure (+24VDC).
Troubleshooting
Flowcharts and Tables
Ghosting (Continued)
Step 5 Check Remove the top cover, side covers, rear cover, I/O board mount, and power supply switch lever. Remove the high-voltage contact assembly and check the continuity on all the high-voltage contacts. Do you find continuity on all the high-voltage contacts? 6 Replace the DC controller board. Does the print quality improve? Yes No Problem solved. Replace the toner cartridge sensor and high-voltage power supply cable. If the problem persists, replace the high-voltage power supply. Result No Action Replace the high-voltage contact assembly.
Table 24. Bad Fusing
Step 1 Check Check the paper in the paper cassette tray for dampness. Is the paper damp? Is the fuser assembly properly installed and secure? Install a known-good fuser assembly. Does the print quality improve? Install a known-good power supply. Does the print quality improve? Install a known-good DC controller. Does the print quality improve? Result Yes Action Replace the paper.
3
2
No
Reinstall the fuser assembly.
3
Yes
Problem solved.
4
Yes
Problem solved.
5
Yes
Problem solved.
Troubleshooting
Flowcharts and Tables
Table 25. Blank Spots/Random Pattern or Location
Step 1 Check Replace the toner cartridge. Does the print quality improve? Check the paper in the paper cassette tray for dampness. Is the paper damp? Is the transfer roller dirty? Remove the fuser assembly and inspect the fuser heater roller and the fuser pressure roller. Are there scratches on either of the rollers? Result Yes Action Problem solved.
2
Yes
Replace the paper.
3 4
Yes Yes
Replace the transfer roller. Replace the fuser heater roller, the fuser pressure roller, or the fuser assembly.
v
Table 26. Toner on Back of Page
Step 1 Check Replace the toner cartridge. Does the print quality improve? Does the printer operating environment meet recommended setup and operating conditions? Result Yes Action Problem solved.
2
No
Make recommended changes to printer operating environment or setup. See the Pre-Power-On Checklist section under "Troubleshooting the LaserWriter Select 360" for recommended setup and operating instructions. Replace the transfer roller. Replace the fuser heater roller, the fuser pressure roller, or the fuser assembly.
3 4
Is the transfer roller dirty? Remove the fuser assembly and inspect the fuser heater roller and the fuser pressure roller. Are there scratches on either of the rollers?
Yes Yes
Troubleshooting
Flowcharts and Tables
Table 27. Paper Jams in Fuser/Delivery Area
Step 1 Check Initiate a service test page. Does the test page jam as it leaves the fuser assembly? Is the cable that runs to the paper delivery sensor securely connected? Initiate another test page and observe the action of the delivery lever on the fuser assembly. Does the lever swing freely when paper passes through the fuser assembly? 4 Allow the fuser rollers to cool and then remove the fuser assembly. Inspect the fuser rollers. Are the fuser rollers worn or damaged? Do the fuser rollers rotate without binding? Remove the I/O shield, the I/O board, and the I/O board mount. Replace the fuser assembly and disconnect P111 from the high-voltage power supply. Connect a multimeter between connector pins P16-1 (PULLUP +5 V) and P16-2 (GND) on the DC controller board. Does the voltage measure +5 VDC when you switch on the printer? Yes Replace the fuser assembly. Result No Action Problem solved.
2
No
Reconnect the cable to the paper delivery sensor. Replace the delivery sensor lever.
3
No
5 6
Yes No
Replace the fuser assembly. Go to Table 12, Power Supply Failure (+5 V).
3
Troubleshooting
Flowcharts and Tables
Paper Jams in Fuser/Delivery Area (Continued)
Step 7 Check Verify that the cable that runs to the paper delivery sensor is still securely connected. Connect a multimeter across connector pins P16-3 (EXIT) and P16-2 (GND) on the DC controller board. Manually actuate the paper delivery sensor by inserting a sheet of paper between the sensor arms. Does the voltage drop from +5 VDC to 0 VDC when you remove the paper from the sensor? Result Yes Action Replace the DC controller board.
No
Replace the paper delivery sensor. If the problem persists, replace the delivery sensor cable.
Table 28. Paper Jams in Paper Pickup Area
Step 1 Check Reload the paper cassette tray with known-good paper. Does the problem still occur? Does the jam occur when the manual feed or optional multipurpose tray is being used? Is the paper cassette installed properly in the printer? Is the paper cassette loaded with too much paper? Are the cassette feed rollers damaged or worn? Are the cassette feed rollers damaged or worn? Result No Action Problem solved.
2
Yes
Go to Step 17.
3
No
Reinstall the paper cassette properly.
4
Yes
Remove the excess paper.
5 6
Yes Yes
Replace the cassette pickup rollers. Replace the cassette feed roller shaft.
Troubleshooting
Flowcharts and Tables
Paper Jams in Paper Pickup Area (Continued)
Step 7 Check Is connector P13 on the DC controller board making good contact? Is connector P115 on the cassette feeder board making good contact? Are the cassette pickup and cassette feed solenoids securely connected to the cassette feeder board? Switch off the printer. Connect the multimeter between P13-7 (+24 V) and P13-8 (TURN1). Does the resistance measure between 220 and 240 ? Connect the multimeter between P13-10 (+24 V) and P13-11 (FEED1). Does the resistance measure between 110 and 130 ? Open the front access door and locate the paper registration arm on the paper charge deflector. Is the paper registration arm damaged or broken? Close the front access door and disconnect connector P16 from the DC controller board. Connect a multimeter between connector pins P16-4 (PULLUP 5 V) and P16-5 (GND) on the DC controller board. Does the voltage measure +5 VDC when you switch on the power? Result No Action Reconnect P13 to the DC controller board. Reconnect P115 to the cassette feeder board. Reconnect P201 and P202 to the cassette feeder board.
8
No
9
No
10
No
Replace the cassette feed solenoid.
11
No
Replace the cassette pickup solenoid.
12
Yes
Replace the paper registration arm.
3
13
No
Go to Table 12, Power Supply Failure (+5 VDC).
Paper Jams in Paper Pickup Area (Continued)
Step 14 Check Replace the DC controller board. Does the problem still occur? Reconnect connector P16 to the DC controller board. Connect a multimeter between pins P16-6 (/PREREG) and P16-5 (GND) on the DC controller board. Initiate a service test page. Does the voltage drop from +5 VDC to 0 VDC when the paper passes the paper registration sensor? Does the manual feed or multipurpose tray have too much paper? (The manual feed tray holds one sheet of paper at a time and the multipurpose tray holds 50 sheets of paper.) Is connector P17 on the DC controller board making good contact? Open the front access door and observe the rollers on the pickup roller assembly. Are the pickup rollers worn or deformed? Using a paper clip or screwdriver, manually activate the manual feed solenoid. Manually rotate the large black gear on the pickup roller assembly toward the manual feed solenoid. Does the pickup roller rotate without binding? Result No Action Problem solved.
15
No
Replace the paper registration sensor located on the paper charge deflector.
16
Yes
Remove excess paper.
17
No
Reconnect connector P17 to the DC controller board. Replace the pickup rollers.
18
Yes
19
No
Replace the pickup roller assembly.
Troubleshooting
Flowcharts and Tables
Paper Jams in Paper Pickup Area (Continued)
Step 20 Check Disconnect P111 from the high-voltage power supply. Connect the multimeter between connector pins P17-1 (+24 V) and P11-2 (GND) on the DC controller board. Does the voltage measure +24 VDC when you switch on the printer? Connect the printer to a computer and place a sheet of paper on the manual feed or multipurpose tray. Connect the multimeter between connector pins P17-2 (+24 V) and P11-2 (GND) on the DC controller board. Select Manual Feed and print a page. Does the voltage drop from +24 VDC to 0 VDC when the manual feed pickup solenoid is actuated? Result No Action Go to Table 11, Power Supply Failure (+24 VDC).
21
No
Replace the manual feed pickup solenoid. Replace the DC controller board.
Yes
Table 29. No Paper Pickup From Cassette
Step 1 Check Is connector P13 on the DC controller board making good contact? Is connector P115 on the cassette feeder board making good contact? Is cassette feed solenoid connector P202 securely connected to the cassette feeder board? Result No Action Reconnect P13 to the DC controller board. Reconnect P115 to the cassette feeder board. Reconnect P202 to the cassette feeder board.
2
No
3
No
Troubleshooting
Flowcharts and Tables
No Paper Pickup From Cassette (Continued)
Step 4 Check Is cassette pickup solenoid connector P201 securely connected to the cassette feeder board? Remove the paper cassette tray. Visually inspect the paper sensing arm. Does the paper sensing arm appear to be damaged? Prepare the printer for troubleshooting as described in the "Troubleshooting Preparation" section. Switch off the printer. Connect the multimeter between P13-7 (+24 V) and P13-8 (/TURN1). Does the resistance measure between 220 and 240 ? 7 Connect the multimeter between P13010 (+24 V) and P13-11 (/FEED1). Does the resistance measure between 110 and 130 ? If only one paper cassette is installed, connect a multimeter between connector pins P13-1 (NO PAPER1) and P13-4 (GND) on the DC controller board. While you remove and insert a paper cassette tray filled with paper, does the voltage toggle from 0 VDC (inserted) to +5 VDC (removed)? No Replace the cassette feed solenoid. Result No Action Reconnect P201 to the cassette feeder board.
5
Yes
Replace the paper sensing arm.
6
No
Replace the cassette pickup solenoid.
8
No
Replace the cassette feeder board. If the problem persists, replace the cassette feeder tray.
Troubleshooting
Flowcharts and Tables
No Paper Pickup From Cassette (Continued)
Step 9 Check Replace the DC controller board. Does the problem still occur? If an optional paper cassette is installed, connect a multimeter between connector pins P13-3 (NO PAPER2) and P13-4 (GND) on the DC controller board. While you remove and insert a paper cassette tray filled with paper, does the voltage toggle from 0 VDC (inserted) to +5 VDC (removed)? Result No Action Problem solved.
10
No
Replace the cassette feeder board. If the problem persists, replace the expansion feeder cable.
Table 30. No Paper Pickup From Manual Feed or Multipurpose Tray
Step 1 Check Is connector P17 on the DC controller board making good contact? Is connector P16 on the DC controller board making good contact? Disconnect connector P111 from the high-voltage power supply. Disconnect connector P16 from the DC controller board. Connect the multimeter between connector pins p16-7 (PULLUP 5 V) and P16-8 (GND). Does the voltage measure +5 VDC when you switch on the power? Result No Action Reconnect P17 to the DC controller board. Reconnect P16 to the DC controller board.
2
No
3
No
Go to Table