Xerox 550 Service manual

Page 1

Chapter

General Information

This service manual contains information useful for troubleshooting, repairing, adjusting, and maintaining a Tektronix Phaser includes troubleshooting guides, adjustment procedures, a ﬁeld replaceable units (FRU) list and assembly/disassembly procedures for selected FRUs. To ensure complete understanding of the product, we recommend participation in Phaser 550 service training.

550 Color Printer. This manual

Figure 1-1 The Phaser 550 Color Printer

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General Information

The Phaser 550 Color Printer

The Phaser 550 Color Printer combines a color laser, continuous-tone print engine with an image processor supporting Adobe’s PostScript Level 2 page description language. The image processor features a bi-directional parallel interface for host communication. Optional network adapter cards to the image processor allow the printer to communicate on networks using LocalTalk, serial, Ethernet or Token Ring protocols. The Ethernet network card supports EtherTalk, Novell and TCP/IP. With the Token Ring network card, the printer supports Token Ring protocols. The network cards are sometimes referred to as “smart cards” because each houses its own processor for executing speciﬁc on-board protocols; only data is transferred from the installed smart card to the printer’s image processor board. The PCL printer language is optionally supported and is activated with a downloadable authorization code.

The Phaser 550 comes standard with 8 Mbytes of RAM which can be supplemented with one or two additional 16- or 32-Mbyte RAM SIMMs; maximum capacity is 72 Mbytes. The printer contains 17 standard, built-in fonts. An additional 22 fonts can be added via an optional snap-in SIMM (which also enables other extended features). The standard Phaser 550 prints at a resolution of 600 x 600 dots-per-inch.

The addition of the extended feature (font) SIMM allows the printer to print at higher resolutions of 600 x 600 (Standard mode), 1200 x 600 (Enhanced mode) and 1200 x 1200 (Premium mode) dots per inch. The extended feature Phaser 550 also supports image pipelining for greater throughput, a print collation mode, and a “check print before proceeding with job” mode.

The Phaser 550 support a 5 page-per-minute, composite-black printing called Fast Color. It also feature Presentation mode printing in which a paper print is printed with the color settings of a transparency print. Presentation mode produces the smoothest and brightest large-area ﬁlls. This mode can only be selected from the front panel. The printer print in monochrome at 14 prints per minute.

The printer also feature a SCSI-compatible interface to connect to an external hard disk drive for additional font storage. An orderable option, the Phaser CopyStation can also be connected to the printer’s SCSI port to give the printer the ability to optically copy color images. The printer requires a minimum of 24 Mbytes of RAM to support the CopyStation.

The printers support printing on A- and A4-sized paper and transparency ﬁlm from an A or A4-size tray. An optional two-tray second feeder (called the Lower Tray Assembly) is available. The printer supports legal-size paper when fed manually or from a Legal-size paper tray. The printer requires at least 12 Mbytes of installed RAM to support Legal-size printing. The printer also supports manual feeding.

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Phaser 550 Color Printer

Page 3

After being idle for one hour the printer switches into its Energy Star mode where it consumes less than 45 watts of power. It “awakens” upon receiving data at any of its ports. The printer also features a closed-loop image density sensor system that allows it to auto-calibrate its color imaging so printing output remains consistent over the life of the print engine and its consumable supplies.

Print speeds depend on the chosen resolution and selected media. For resolutions of 600 x 600 (standard) and 1200 x 600 (enhanced) dpi, in color, the printer prints at 3.5 pages per minute (ppm) on paper. Monochrome printing is at 14 ppm on paper. Transparency ﬁlm printing is always 1.5 ppm. For 1200 x 1200 (premium) dpi color printing, the printer color prints at 1.75 ppm. Monochrome printing is at 7 ppm. Transparency ﬁlm printing is 1.5 ppm. The printer prints 600 x 600 dpi, composite black (CMY) draft prints at a rate of 5 pages per minute.

RAM and printer capabilities

The printer features 8 Mbytes of base RAM and two SIMM connectors which accept both 16- or 32-Mbytes RAM SIMMs. With more memory the printer gains the capabilities of printing at higher resolutions, printing without having to use image compression (which trades off less installed RAM for longer image processing time) and dual frame buffers for printing one image while processing a second image (which gives greater printing throughput). With additional RAM memory the printer’s capabilities increase as detailed in the following table:

General Information

Table 1-1 Installed RAM and printer capabilities

Print mode 8 Mbytes 34 Mbytes 40 MBytes 56 Mbyte 72 Mbytes

600 x 600 dpi

3.5 ppm

1200 x 600 dpi

3.5 ppm, extended feature option

600 x 1200 dpi

1.75 ppm, extended feature option

1200 x 1200 dpi

1.75 ppm, extended feature option

1 frame buffer with image compression

1 frame buffer with no image compression

2 frame buffers with image compression

1 frame buffer with image compression

2 frame buffers with no image compression

1 frame buffer with no image compression

2 frame buffers with image compression

2 frame buffers with no image compression

1 frame buffer with no image compression

2 frame buffers with image compression

2 frame buffers with no image compression

1 frame buffer with no image compression

Installing a single 4-Mbyte RAM SIMM in the image processor’s SIMM 1 connector (total of 12 Mbytes RAM installed) gives the printer the ability to print full color on legal-size paper.

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Page 4

General Information

Print engine assemblies

Toner level sensor board

Pre-exposure lamp

Imaging unit

Paper feeder

Black toner cartridge

Yelllow toner cartridge

Magentatoner cartridge

Cyan toner cartridge

Pre-transfer lamp



Ozone filter



Fuser

Laser scanner

Toner cartridge selector/paper exit unit  (right door)

Paper tray

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Figure 1-2 Print engine major components

The imaging unit may contain a removable pre-transfer corona unit. The pre-transfer corona unit makes the imaging unit backwards compatible with the Phaser 540 Color Laser Printer. Unlike the Phaser 540, the Phaser 550 does not use a pre-transfer corona.

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Phaser 550 Color Printer

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Toner cartridge drive unit

Power supply fan

Power supply unit

Engine control board

Fuser fan

Charger sensor board

Cleaning board

Toner  cartridge motor

Ozone fan

Laser motor drive board

General Information

Image processor board

High voltage board

Main motor

Paper feed motor

Engine driver board

Figure 1-3 Print engine components (continued)

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Page 6

General Information

Manual feed sensor

Accumulator belt

Toner level sensors (transmitters)

home position sensor

Image density sensor

Scorotron charger sensor

Pre-transfer charger sensor

Toner level sensors (receivers) are mounted inside the toner cartridge driver unit

Front right door opened switch

Aligning sensor

Transparency sensor (transmitter)

Transparency sensor (receiver)

Paper low sensor*

Paper tray type sensors

Power switch

*Unused by image processor

Figure 1-4 Print engine sensor, switch and solenoid locations

The photoconductive belt position sensor is not illustrated. This optical sensor marks the home position of the photoconductive belt. It is mounted inside the customer-replaceable imaging unit.

Transfer waste bin sensor

Transfer roller position sensor

Fuser-installed switch

Left door opened switch

Fuser-exit sensor

Output tray full sensor

Paper-exit sensor

Paper-empty sensor

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The logic state of the paper low sensor is not monitored nor used by the image processor.

Phaser 550 Color Printer

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Front panel

General Information

These front panel features are found on the printer:

■

A two-line, 24-character LCD and two LEDs

Four push buttons

■

LCD

The LCD serves two purposes: displaying current controller and print engine status information and displaying an interactive menu. Status information includes controller status such as

Printing . Print engine status includes messages such as Out of paper , Paper Jam , and Out of toner . The interactive menu can only be entered

while the print engine and controller are idle. The interactive menu allows the user to review and change certain NVRAM, I/O ports and peripheral parameters. Using the front panel to review and change parameters is discussed in Chapter 9, “Checks and Adjustments.”

Buttons

while in the interactive menu. The functions of Buttons 2, 3 and 4 are deﬁned by the particular menu or function being displayed on the LCD display. The bottom row of the LCD labels the current function of each button.

Button 1, the left-most button labeled the Exit key, cancels an operation

Ready , Receiving data and

In addition, pressing the buttons as you turn on the printer enables certain diagnostic modes:

Pressing and holding Button 1, as you turn on the printer, skips

■

power-up diagnostics (except for a brief kernel test) and proceeds to PostScript startup.

■

Pressing and holding Button 2, as you turn on the printer, executes extended diagnostics.

■

Pressing and holding Button 3, as you turn on the printer, executes interactive service tests. These are described in “Printer self-diagnostics” on page 9-6.

The Chapter 9 topic, “Resetting NVRAM” on page 9-31 explains how to use the front panel buttons to reset the printer’s NVRAM to its factory default values.

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General Information

LEDs

The Power LED indicates the printer has +5 VDC available for its logic

control boards.

The

Error LED has three indications:

■

Off indicates that no errors have been detected.

■

indicates a warning to the user. An explanatory message, such as

Low Paper , is displayed on the LCD.

Blinking indicates an error has been detected. An error message, such

■

Paper Jam at Output , is displayed on the LCD. Error codes

as, are listed and explained in the Section 6 topic, “Error messages” on page 6-19.

Power Error

Exit

Button 1

Button 2

Button 3

Button 4

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Figure 1-5 The front panel and its functions

Phaser 550 Color Printer

Page 9

Rear panel

General Information

Connectors

The rear panel of the Phaser 550 printer features the host interface connectors to the printer. It includes the following connectors:

Standard parallel (high-density connector).

■

SCSI high-density connector (font hard disk drive or Phaser CopyStation only).

With the addition of a network card, the printer can feature either of these groups of connectors:.

■

ThinNet (10base2) and Twisted Pair (10baseT) Ethernet connectors. This is Option P1 and P2.

■

RS-232 serial and LocalTalk connectors. This is Option P2

Unshielded Twisted Pair (10baseT) and shielded Twisted Pair (DB-9)

■

Token Ring connectors. This is Option P4.

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General Information

The ﬁgure below illustrates the rear panel.

Parallel

SCSI

Smart card slot for network card

Phaser™ Share

Ethernet Card

10Base2

Link

RX

10Base-T

Option P1 P2

Figure 1-6 The Phaser 550 rear panel

LocalTalk/Serial Card

Phaser™ Share

Serial LocalTalk®

Option P3

RS-232 serial

LocalTalk

Token Ring Card

PhaserShare™ 



Option P4

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Network card LEDs

The Ethernet network card has two LED indicators:

■

Note

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Phaser 550 Color Printer

TX indicator (yellow); blinks while data is transmitted to the host. The LED is off while no data is being sent.

Twisted Pair (10baseT). RX indicator (green); blinks while the

network card is receiving data. The LED is being received. If the LED is

off steady , then a problem (probably

on steady while no data is

hardware) has occurred at the network hub.

ThinNet (10base2). RX indicator (green); blinks while the network

card is receiving data. The LED is received. If the LED is

on steady , then a problem (probably hardware)

off stead y while no data is being

has occurred at the network hub.

Do not use both Ethernet connectors at the same time. If both are used the 10base2 line is ignored.

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Test print button

General Information

The Token Ring network card has two LED indicators:

■

Connection (yellow); off when the printer is not inserted into the Token

blinks while the printer is attempting to insert itself into the

Ring, Token Ring,

Ring Speed (green); off when the card is set for 4 megabits per second

■

(MBPS),

When both LEDs blink, a network card failure has occurred.

■

In the center of the rear cabinet panel is the test print button. Pressing this button while the printer is idle causes the print engine to print a built-in test print. The print consists of a ﬁeld of thin horizontal lines. The print is made independently of the image processor board. Hold in the test button for at least 4 seconds before releasing, or until you hear the print process begin.

when the printer is properly inserted in the ring.

when the card is set for 16 MBPS.

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Page 12

General Information

Health LED

A health LED indicates the status of the image processor board. The health LED is mounted on the image processor board and is viewable through the grill behind the manual feed tray. (The grill is the removable RAM SIMM options cover.) Once the PostScript code is loaded into memory and the image processor is initialized and running, the image processor blinks the LED at a one-second rate.

Blinking (at a steady rate): The printer is operating normally. The LED

■

blinks irregularly during power-up self-diagnostics.

If a soft error occurs, the image processor board operates, but in a reduced capacity. Soft failures include failure of expansion memory SIMMs or any of the interface ports. When a soft error occurs, the printer automatically prints a startup page listing the error.

■

or Off : A hard error condition has occurred that would keep the

image processor board from operating.

Media tray type sensing

The combinations of the three tray sensors “tell” the print engine what type of paper tray is installed. The tray sensors are located on the left-side interior of the paper tray slot. Sensor actuators are attached to the bottom end of the tray to close the appropriate sensor. There are four tray types:

■

Letter (A-size) paper

Letter (A-size) transparency ﬁlm

■

■ Metric Letter (A4-size) paper

■ Metric Letter (A4-size) transparency ﬁlm

■ Legal-size paper

Table 1-2 Tray switch sensor combinations

Left switch Middle switch Right switch Tray type

Closed Open Open Letter (A-size) paper

1-12

Closed Closed Open Letter (A-size) transparency ﬁlm Open Open Closed Metric Letter (A4-size) paper Closed Open Closed Metric Letter (A4-size) transparency ﬁlm Open Closed Open Legal size paper

Phaser 550 Color Printer

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General Information

Sensor actuators

Middle

Left

Right

Tray sensors

Figure 1-7 Tray switch sensors and actuators

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Page 14

General Information

Speciﬁcations

Table 1-3 Physical dimensions

Dimensions Speciﬁcation

Height: Width: 48.3 cm (19 in.) With output tray: 69.6 cm (27.4 in.) Depth: 48.3 cm (19.5 in.)

45.7 cm (18 in.) With Lower Tray Assembly: 68.6 cm (27 in.)

Weight: Approximately 53.3 kgs (117 lbs.) with Lower Tray Assembly

and consumables installed. Approximately 39.1 kgs (86.2 lbs.) without Lower Tray Assembly.

Table 1-4 Printer clearances

Clearances Speciﬁcation

Top: 7.6 cm (3 in.) Left: 7.6 cm (3 in.) Right: 10.2 cm (4 in.) for handling the output tray Front: Unlimited for removal of consumable Rear: 15.3 cm (6 in.) for connecting computer cable and pow er cord Bottom: No obstruction under printer that could block its cooling vents. Mounting surface

ﬂatness:

Within 2 degrees of horizontal with all four feet in contact with the table surface.

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Phaser 550 Color Printer

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General Information

Table 1-5 Functional specifications

Characteristic Speciﬁcation

Printing process Electro-photographic, four color (CMYK) transfer printing

Color medium Four toner cartridges each contain one of four colors: cyan,

Addressability Standard, Fast Color and Presentation

Printing speed Time from paper-load to paper-eject:

Minimum printing margins

Usable paper A-size (letter) and A4-size (Metric letter) of a good quality

magenta, yellow or black. The toner is a nonmagnetic, monocomponent contact medium.

mode: 600 x 600 dots-per-inch text and graphics Enhanced mode: 1200 x 600 dots-per-inch text and graphics Premium mode: 1200 x 1200 dpi text and graphics

Four-color 3.5 pages per minute at 600 dpi paper: 1.75 pages per minute at 1200 dpi Monochrome: 14 pages per minute at 600 dpi 7 pages per minute at 1200 dpi Four-color transparency: 1.5 pages per minute Fast color, three-color (CMY): 5 pages per minute at 600 dpi Print times do not include image processing time, which can vary depending on image complexity.

All sides, 5 mm (0.2 ins.).

premium laser printer or copier paper. Tray feed paper weight: 75 to 105 g/m

Manual feed paper weight: 60 to 120 g/m Double-sided printing is not supported.

Envelope printing is not supported.

(20 to 28 lb.)

(16 to 32 lb)

Paper tray capacity 250 sheets using 20-lb. paper. 100 sheets of transparency

ﬁlm. The optional Lower Tray Assembly also uses trays with the same capacity.

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General Information

Table 1-6 Electrical specifications

Characteristic Speciﬁcation

Primary line voltages 87 to 128 VAC (115 VAC or 100 VAC nominal); 174 to 260

VAC (220 VAC nominal)

Primary voltage

47 to 63 Hz

frequency range Power consumption 60 watts (fuser off), 850 watts (fuser on) during Ready state,

950 watts during Warm-up, 45 watts during Energy Star state

Primary voltage fusing 110 VAC conﬁguration – 10 amp

220 VAC conﬁguration – 6.3 amp

Secondary DC voltages Image processor:

+ 5 VDC ± 0.25 (1A minimum, 6 A maximum) ± 12 VDC ± 0.6 (100 mA max)

Print engine: + 5V ± 0.25 (2.2 A max) + 12V ± 0.25 (0.4 A max)

- 12V ± 0.25 (0.1 A max) + 24V ± 0.25 (3.0 A max)

RF emissions Both 110 and 220 VAC-conﬁgured instruments pass these

standards: FCC Part 15 Class B VDE Class B EN55022 (CISPR 22) Class B VCCI (CISPR 22) Class B

Table 1-7 Environmental specifications

Characteristic Speciﬁcation

Temperature Operating Non-operating Storage

Humidity Operating Non-operating

Altitude Operating Non-operating

Vibration/shock Operating

Non-Operating (vibration)

Non-operating (shock) Acoustic Noise

(operating)

10o to 32.5o C (50oto 91oF)

to 40o C (32o to 104o F)

-20

to 60o C (-4

to 140o F)

Media should be acclimated 24 hours before using in the printer.

10 to 80% relative humidity, non-condensing 10 to 90% relative humidity, non-condensing

Media should be acclimated 24 hours before using in the printer.

0 to 2500 m (8,000 ft.) at 25 0 to 15000 m (50,000 ft.) (Fuser maximum 4000 m (13,300 ft.)

May drop any side or corner 50 mm (2 in.) without impairment of subsequent operation. On ﬁve mutually perpendicular axes: 0.5 g, 25-minute sweep, 5 to 200 to 5 Hz, 100 to 200 sec./sweep cycle. No resonant frequencies below 50 Hz. 30 g, trapezoidal ﬂared pulse, 20 msec each axis.

Aver age sound le vel (LEQ) is less than 53 dbA. Peak noise in standby mode is 47 dbA.

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Phaser 550 Color Printer

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Regulatory speciﬁcations

The printer is a recognized component in conformance with the following regulatory standards:

■ The packaged product meets ASTM D4169-86 and ASTM D4728-87

Transportation Standards.

■ Listed UL 1950 Information Processing and Business Equipment.

■ Certiﬁed CSA C22.2 No. 950 Safety of Information Technology

Equipment, Including electrical Business Equipment.

■ GS licensed IEC 950 (1991) Second Edition; EN60950 Information

Processing and Business Equipment.

■ VDE 0871/6.78 (Class B) Regulation for the Radio Frequency Interface

Suppression of High Frequency Apparatus and Installations.

■ VDE 0875, Regulation for RFI Suppression of Electrical Equipment

and Installations

General Information

■ EN55022 (CISPR 22) Class B

VCCI (CISPR 22) Class B

■ FCC Class B (for 115 VAC equipment) pursuant to Sub-part J

of Part 15.

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Page 19

Appendix

Test Pattern Generator

The Test Pattern Generator contains PostScript scripts to start test patterns for a number of Tektronix color printers. It allows you to test a printer as if it were receiving a ﬁle from a host computer. The test patterns are generated by the printer's image processor and then printed by the print engine.

Note

The Test Pattern Generator should contain ﬁrmware version 1.2 or higher.

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Page 20

Test Pattern Generator

To use the Test Pattern Generator, do the following:

Select a test pattern to be printed using the Test Pattern Generator's ﬁve DIP switches. The following tables lists the available test patterns.

Plug the Test Pattern Generator onto the printer's parallel port. Use the parallel cable adapter (013-0299-00) to convert between the Test Pattern Generator’s Centronics-style connector and the printer’s new-style, high-density parallel port connector. You do not have to turn the printer off; you can plug in the Test Pattern Generator “hot.”

Press the Test Pattern Generator's START button. Its green LED ﬂashes as you press the button.

The printer will print the transmitted print ﬁle. The front panel displays the message “Waiting for data,” with the READY light ﬂashing, for ﬁve minutes after a test print has been sent to the printer. However, you do not have to wait ﬁve minutes before sending another test print from the Test Pattern Generator; the printer will accept another test print.

Besides print ﬁles, the test pattern generator also allows you to turn off and on the printer's startup page.

Additionally, the Test Pattern Generator lets you set up a printer for printing from a 4511A Network Interface. To do so, just select the appropriate DIP switch setting.

Table D-1 Test Pattern Generator DIP Switch settings for Phaser 550

Pattern or function 1 2 3

Print quality test pattern On On On On On Blank sheet Off On On On On Engine Pattern 1

(100%) Service print 1 Off Off On On On Blank sheet On On Off On On Engine pattern 2 (50%) Off On Off On On Service print 2 On Off Off On On Enable startup page Off Off Off On On Disable startup page On On On Off On

On Off On On On

D-2

Phaser 550 Color Printer

Page 21

Appendix

Wiring Diagram

Power  supply fan

Door- open switch

Power switch

Fuser- installed sensor

SCSI

Parallel

Network card

Front panel

J219

J811

J211

J515

CN 853

CN 851

CN 802

CN 804

Image processor

CN 854

Power supply

J511

J921

CN 855

CN 852

CN 805

Laser driver board

CN 1

CN 11

CN 1

CN 5

CN 12

Engine control board

CN502

CN 16

CN 4

CN 9

CN 7

CN 6

CN 13

CN 540

Laser scanner

CN 570

CN 701

High voltage power supply board

CN 627

Image density sensor connector

CN 619

Toner cartridge level sensor (Receiver) and roller clutch board

CN 625

Charger unit sensor board

CN 624

Imaging unit

CN 632

Accumulator belt position sensor

Toner cartridge sub bias board

FTR Orange DEV Yellow STR Black CHG Red GRID Blue

CN 628

BK sensor

CN 620 CN 621

CN622 CN623

CN 626 CN 630

B Y M C

Pre-exposure lamp

CMY sensor

Fuser

Left door closed sensor

Fuser fan

Paper-feed motor

Developer cartridge drive motor

Main motor

Cleaning board

Paper tray switches

CN 618

CN 307

CN 312

CN 304

CN 306

CN 305

CN 313

CN 302 CN 311

CN 2

CN 301

Engine driver board

CN 310

Optional lower tray assembly

CN 14

CN 17

CN 303

CN 309

CN 308

Ozone fan

Toner cartridge level (transmitter) sensor

Pre-transfer lamp

CN 601

Paper feeder

Exit tray full 

CN 617

sensor

CN 611

Exit roller sensor board

Toner cartridge

CN 615

movement sensor

CN 616

Cam motor  board

CN 603

CN 602 CN 606 CN 605

CN 614

CN 612

CN 613

Paper-pick sensor

Aligning sensor

Transfer roller solonoid

Aligning roller clutch

Fuser exit

CN 610

sensor

Switchback solenoid

Face switching solenoid

9322-65

Figure C-1 Wiring diagram

Service Manual

C-1

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Page 23

1 General Information

The Phaser 550 Color Printer 1-2

RAM and printer capabilities 1-3 Print engine assemblies 1-4 Front panel 1-7 Rear panel 1-9

Network card LEDs 1-10

Test print button 1-11

Health LED 1-12

Media tray type sensing 1-12 Specifications 1-14

Regulatory specifications 1-17

2 Installing the Printer and Drivers

Pre-install questions for customers 2-2 Unpacking 2-5

Printer inventory 2-5

Accessory box 2-5 Setting up the printer 2-7

Installing SIMM memory 2-7

Installing a font SIMM 2-7

Installing a network card 2-7 Cabling the printer 2-8

Connecting the printer to a Macintosh 2-8

LocalTalk connection to a Macintosh 2-8 Ethernet connection to a Macintosh 2-8

Connecting the printer to a PC 2-9

Direct connection to a PC 2-9 Networked connection using the Ethernet port 2-9 Networked connection using the Token ring port 2-9

Connecting the printer to a workstation 2-10

Direct connection to the workstation 2-10 Networked connection to a workstation 2-10

Networked connection using the Token Ring port 2-10 Connecting an optional SCSI hard disk drive to the printer 2-11 Connecting the optional CopyStation to the printer 2-12

Turning on the printer 2-13

The startup page 2-13 The configuration page 2-14

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Driver and communication set up 2-21

Loading the LaserWriter PPD file 2-21 Installing a printer driver for Microsoft Windows 95 2-22 Installing the Tektronix driver for Windows 3.1 2-24

If you have other Tektronix printer drivers already installed 2-24

Configuring the Tektronix Windows printer driver 2-25 Updating the standard Microsoft Windows PostScript driver 2-27 Installing the printer driver for OS/2 Version 2 2-28 Setting the printer’s IP address using the front panel 2-30 Configuring the printer's serial port for a PC 2-31 Using printcap to configure a workstation for the printer's serial port 2-33 Configuring a Novell NetWare server for the printer 2-34 Configuring TCP/IP on a UNIX host 2-35

3 Verifying the Printer and Host Connections

Macintosh verification 3-1

Selecting the printer via the Chooser 3-1

Printing the directory from a Macintosh 3-3 Verifying that an application communicates to the printer 3-4 Using the Error Handler utility 3-4

PC verification 3-5

DOS connection verification 3-5 Windows 95 driver verification 3-5 Windows 3.1 driver verification 3-6 OS/2 connection verification 3-6 Novell NetWare verification 3-7

Send a print file to the printer 3-7 Using the Error Handler utility 3-8

Workstation verification 3-9

Verifying connection and printing using TCP/IP protocols 3-9 Using the Error Handler utility 3-10

Phaser 550 Color Printer

Page 25

4 Key Operator Training

Overview 4-1 Printer controls and indicators 4-2 Loading media 4-3 Customer-replaceable consumables 4-4

Imaging unit 4-4 Toner cartridges 4-4 Transfer roller 4-4

Fuser 4-4 Clearing paper jams 4-5 Cleaning 4-5 Warranty information 4-6 Service support 4-6 Supplies ordering 4-7 If you need help 4-7

Using the automated fax systems 4-7

Tektronix Color Printer Information Server 4-10

Customer Support Hotline 4-10

Service support 4-11

Electronic bulletin board service 4-11

5 Theory of Operation

Overview 5-1 Functional block diagram 5-2 Laser imaging 5-4

Overview 5-4

Pre-exposure 5-6

Electrostatic charging 5-7

Laser exposure 5-8

The laser scanner 5-9

Toner pickup (development) 5-10

Toner transfer to the accumulator belt 5-11

Paper picking 5-12

Toner transfer to paper 5-13

Fusing and exiting 5-14

Print modes 5-15

Printer color correction 5-16 Power supply 5-17 Image processor 5-18

Image rendering technology 5-18

Service Manual

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6 Troubleshooting

System power-up sequence 6-1 Print engine troubleshooting 6-2

Testing the print engine 6-2 Verifying printer operation by using its self-test print 6-3 Verifying power supply operation 6-3

Measuring power supply voltages 6-3 Inspecting the power supply fuses 6-5 Safety interlocks 6-5

Testing for a shorted motor 6-6 Testing motor resistances 6-7 Media jams and the paper path 6-8 Media-based problems 6-8

Media problems 6-8

Multiple-sheet pick 6-8

The printer is not distinguishing between paper and transparency film 6-9

The media skews passing through the paper path 6-9

Paper tray indicates empty when it is not 6-10

No paper feeder installed 6-10

No imaging unit installed 6-10 Jams 6-11

Paper mis-picks at the paper tray 6-11

Paper jams midway in the paper feeder 6-11

Paper jams at the second bias transfer roller 6-12

Fuser jams 6-13

Eject jams 6-13

Manual feed jams 6-14 Other problems 6-15

The printer continuously displays “Initializing” 6-15

Transfer roller waste tray indicates not full when it is 6-15

No toner cartridge installed when it is 6-16

No fuser installed when it is 6-16

Front door open when it is closed 6-16

Left-side door open when it is not 6-16

High temperature error 6-17

Low temperature error 6-17

High voltage error 6-17

Thermistor open error 6-18

Power supply fan does not run 6-18

Front Panel Cycling between READY and WARMING UP 6-18

viii

Phaser 550 Color Printer

Page 27

Error messages 6-19 Print engine error codes 6-19 Printing and print quality problems 6-24

Blank print 6-24 All-black print 6-24 Missing primary color 6-25 Light print 6-25 Repeated spots or lines on print in-line with each other 6-26 Dark vertical line in print 6-26 Missing primary color on one side of print 6-26 White horizontal line or band in all the colors of a print 6-27 White vertical lines in the print 6-27 Dirty background 6-27 Mis-transfer, missing portions of toner 6-27 Partial black dots 6-27 Dark, irregular steaks in all colors 6-28 Ghosting 6-28 Unfused or partially fused printing 6-28 Image is skewed on the paper 6-28 Stains on the back of the print 6-29 No printing on edge of print 6-29 Image is not centered on the print when it should be 6-29 The print is wrinkled 6-30

Macintosh printing problems 6-31

Image never prints 6-31 Image prints in black-and-white 6-31 Image is rotated 90 degrees 6-31 Printer isn’t in the Chooser 6-32

PC DOS printing problems 6-32

Image never prints 6-32

Windows printing problems 6-34

Image never prints 6-34 Blue color on the screen is printing too purple 6-34 Windows message “Problem writing device LPT1: Cancel or Retry” 6-34

Workstation printing problems 6-35

Image never prints 6-35

Service Manual

Page 28

7 Cleaning and Maintenance

Service preventive maintenance procedure 7-1 Recommended tools 7-1 Cleaning 7-2 Lubrication 7-2

8 FRU Disassembly/Assembly

Required tools 8-1 The printer cabinet 8-2

Upper rear cover 8-2 Lower rear cover 8-2 Top cover 8-2 Left door (for paper feeder access) 8-2 Left side cover 8-2

Manual feed tray 8-2 Front door 8-4 Upper and lower front covers 8-4 Bottom front cover 8-4 Front panel board 8-4 Toner level sensor board 8-4 Right side covers (front, rear and lower) 8-5

Paper feeder 8-6 Paper tray sensor board 8-6 Cartridge selector/eject unit (right door) 8-8 Laser scanner 8-9 Laser motor drive board 8-10 Power supply 8-11 Fuser installed switch 8-11

Power supply fuse 8-13

Printer rear assemblies 8-14

Engine control board 8-14 Engine driver board 8-14 Charger sensor board 8-15 Main motor 8-16 Paper feed motor 8-16 Cleaning board 8-16 Toner cartridge drive unit 8-18 Home position sensor assembly and the left door opened switch 8-18

Phaser 550 Color Printer

Page 29

High-voltage board 8-20 Pre-exposure lamp 8-21 Pre-transfer lamp 8-21 Toner auto-density sensor 8-21 Image processor board 8-23 Installing RAM SIMMs 8-24 Installing an Extended Features SIMM 8-26 Installing a network card 8-28

Enabling TCP/IP with the authorization code 8-29

Replacing the code ROM SIMM 8-30

9 Checks and Adjustments

Required tools 9-1 Front panel menu 9-2 Printing test prints 9-4

Print service test prints 9-4 Printing the configuration page 9-4 Printing the demonstration pages 9-4

Printing the print engine’s test print 9-4 Image processor normal indicators 9-5 Image processor hard and soft error indicators 9-5 Printer self-diagnostics 9-6

Service mode status code meanings 9-11 Resetting NVRAM 9-31 Print engine calibration 9-32 Printer color correction 9-32

Starting printer semi-automatic color correction 9-32

Manually setting color corrections 9-32 Checking print registration 9-34

A Field Replaceable Units List

B Test Prints

C Wiring Diagram

D Test Pattern Generator

Index

Service Manual

Page 30

Figures

Figure 1-1 Figure 1-2 Figure 1-3 Figure 1-4 Figure 1-5 Figure 1-6 Figure 1-7

Figure 2-1 Figure 2-2 Figure 2-3

Figure 5-1 Figure 5-2 Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Figure 5-8 Figure 5-9 Figure 5-10 Figure 5-11 Figure 5-12 Figure 5-13 Figure 5-14

The Phaser 550 Color Printer 1-1 Print engine major components 1-4 Print engine components (continued) 1-5 Print engine sensor, switch and solenoid locations 1-6 The front panel and its functions 1-8 The Phaser 550 rear panel 1-10 Tray switch sensors and actuators 1-13

The Phaser 550 and its packaging 2-6 Connecting a SCSI hard disk drive to the Phaser 550 2-11 Connecting a CopyStation to the Phaser 550 2-12

Block diagram of the printer 5-2 Laser printing process overview 5-5 Pre-exposing the photoconductive belt 5-6 Electrostatic charging of the photoconductive belt 5-7 Laser exposure of the photoconductive belt 5-8 The laser scanner 5-9 Toner pickup 5-10 Toner transfer to the accumulator belt 5-11 Paper picking 5-12 Transferring toner to the paper 5-13 Fusing the toner to the paper 5-14 Print modes and printing dots 5-15 The power supply 5-17 The image processor graphics pipeline 5-19

Figure 6-1 Figure 6-2

xii

Measuring the DC voltages (test points) 6-4 Door safety interlock switches 6-6

Phaser 550 Color Printer

Page 31

Figure 8-1 Figure 8-2 Figure 8-3 Figure 8-4 Figure 8-5 Figure 8-6 Figure 8-7 Figure 8-8 Figure 8-9 Figure 8-10 Figure 8-11

Figure 8-12 Figure 8-13 Figure 8-14 Figure 8-15 Figure 8-16 Figure 8-17 Figure 8-18

Removing cabinet covers 8-3 Removing cabinet covers 8-5 Removing the paper feeder and the paper tray sensor board 8-7 Removing the cartridge selector/eject unit 8-8 Removing the laser scanner 8-9 Removing the laser modulation board 8-10 Removing the power supply and the fuser installed switch 8-12 Replacing the power supply fuse 8-13 Removing the engine control, engine driver and charger sensor boards 8-15 Removing the main motor, paper-feed motor and cleaning board 8-17 Removing the toner cartridge drive unit, home position sensor and

the left door interlock switch 8-19 Removing the high-voltage board 8-20 Removing the pre-exposure lamp, pre-transfer lamp and toner auto-density sensor 8-22 Removing the image processor board 8-23 Installing RAM SIMMs 8-25 Installing an extended feature SIMM 8-27 Installing a network card in the printer 8-28 Installing the code ROM SIMM 8-30

Figure 9-1 Figure 9-2 Figure 9-3 Figure 9-4 Figure 9-5

Figure A-1 Figure A-2 Figure A-3

Figure C-1

Menu map 9-2 Menu map 9-3 Status codes diagnostic tree 9-11 Manual color correction reference print 9-33 Checking the registration of the toner layers 9-34

Cabinet FRUs A-2 Cabinet FRUs A-3 The internal printer A-5

Wiring diagram C-1

Service Manual

xiii

Page 32

Tables

Table 1-1 Table 1-2 Table 1-3 Table 1-4 Table 1-5 Table 1-6 Table 1-7

Table 2-1 Table 2-2

Table 6-1 Table 6-2

Table 9-1 Table 9-2

Table A-1 Table A-2 Table A-3 Table A-4

Installed RAM and printer capabilities 1-3 Tray switch sensor combinations 1-12 Physical dimensions 1-14 Printer clearances 1-14 Functional specifications 1-15 Electrical specifications 1-16 Environmental specifications 1-16

Configuration page settings for the Phaser 550 2-14 Values for modifying the DEVPARAMS.PS file 2-32

Motor and solenoid resistances 6-7 Print engine service error codes 6-19

Print engine service test descriptions 9-8 Status code meanings 9-12

FRU parts list of the printer cabinet A-2 FRU part list of the printer cabinet A-3 FRU parts list of the exploded printer A-4 Supplies and accessories A-6

Table D-1

xiv

Test Pattern Generator DIP Switch settings for Phaser 550 D-2

Phaser 550 Color Printer

Page 33

Appendix

Test Prints

This appendix illustrates the test prints produced by the print engine. It also illustrates a number of defective prints and the reason for the defects. The Chapter 6 page 6-24 discusses solutions to the problems shown in this appendix.

Test Print consists of four 25% tint primary color bands. Service Print 1 prints out four 25% tint full page ﬁlls, each page one primary color. Service Print 2 shows 1200 dpi printing.

From the Help Pages menu in the front panel, select Test Print

From the Help Pages menu in the front panel, select Service Print 1

Troubleshooting topic “Printing and print quality problems” on

Black

Test Print <--- ---> Print

Service Print 1 <--- ---> Print

Power

Error

Power

Error

Cyan

Magenta

Yellow

Imaging Unit XXXX Corona Wire XXXX

Test Print

Transfer Kit XXXX Fuser XXXX 

Black Cyan Magenta Yellow

Single color mottled or with non-uniform density streaks.

If a single color displays a mottled appearance or if a single color shows many vertical streaks of varying densities, then that color’ s toner cartridge is running of toner. Replace the cartridge.

Service Manual

B-1

Page 34

Test Prints

Vertical line or scratch in print, single color

If the scratch is of one missing primary color, then the trouble can usually be traced to a scratch in the developer roller of the missing toner’s toner cartridge. No toner is transferred from the developer roller to the photoconductive belt at the defect point.

Vertical line or scratch in print, all colors

The problem may be caused by contamination on the laser window where the laser beam exits the laser scanner and enters the imaging unit. Since the b loc k ed laser beam cannot discharge the portion of the photoconductive belt it cannot reach, toner will not transfer to those portions of the belt. Consequently a blank, vertical line will appear on the prints in all colors. Remove the imaging unit and, with a squeeze bulb, blow any dust or toner off of the window (located in the “ceiling” of the cavity left in the printer once the imaging unit is removed).

If it is in all colors then the problem may be in the imaging unit, such as a scratched photoconductive belt. Replace the imaging unit.

A very thin, white line could be caused by a scratched roller in the fuser which replacing will solve. The scratch in the print may not be continuous but rather a set of in-line vertical scratches. If the scratches are about 5 inches (12.5 cm) apart, then the problem is a scratch on the fuser roller. Replace the fuser.

Lastly a protrusion of some kind in the paper path could be scratching the print.

Dark vertical line in print, single color

If the line is of one primary color, then the trouble can usually be traced to a defect in the color’ s toner cartridge. Too much toner is transferred from the developer roller to the photoconductive belt at the defect point.

Vertical line in print, all colors

The problem may be caused by contamination on the laser window where the laser beam exits the laser scanner and enters the imaging unit. A b locked laser beam problem can appear as a fuzzy, vertical line running through the entire print.

Service Manual

B-2

Page 35

Test Prints

Small, repeating light dot in one color

This can usually be traced to a dent-like defect in the developer roller of the toner cartridge in question. The dents should be

1.5 inches (3.4 cm) apart or 1 inch (2.5 cm) for 1200 dpi printing. No toner is transferred from the developer roller to the photoconductive belt at the defect point.

If the sports are about 5 inches (12.5 cm) apart, then the problem is a defect on the fuser roller. Replace the fuser.

In some instances, the spots may be dark instead of white. They may also be shaped something other than round.

Single light, horizontal line in all the prints

This is probably caused by a defective photoconductive belt onto which toner will not transfer. Replace the imaging unit.

Service Manual

B-3

Page 36

Test Prints

Large, random light smudges

Spots such as those illustrated are caused by ﬁngerprints on the photoconductive or accumulator belt. Often, the smudges will gradually fade with additional printing. Alternately, the imaging unit will have to be replaced.

Finger prints can be removed by applying some toner (any color) to the ﬁngerprints and rubbing lightly with a cotton-tipped swab. Don’t remove the toner. The printer will remove the toner with its the cleaning blade.

ambient light for more then a minute.

Remember not to expose the imaging unit to

One or more dark vertical line in all colors

This can often be traced to a dirty scorotron charger (main charger) corona wire. Contamination (dust or toner) interferes with the ﬂow of electrons from the wire to the photoconductive drum. Toner is then transferred to the area of low electron charge and consequently to the accumulator belt and ﬁnally the print. Remove the scorotron charger from the imaging unit and clean the charger’s corona wire. Replace the scorotron charger, if necessary. If this fails to correct the problem, replace the imaging unit.

Service Manual

B-4

Page 37

Test Prints

Faded, pale prints

The imaging unit is old or has been exposed to too much room light. Replace the imaging unit.

The image density sensors are not properly measuring the amount of toner transferred to the accumulator belt. Clean or replace the sensors.

The high-voltage board is not outputting sufﬁcient voltage to the second bias transfer roller, causing poor transfer of toner to paper. Likewise, low voltage to the toner cartridge will cause insufﬁcient transfer of toner to the photoconductive belt.

The beam from the laser scanner is weak and is not properly exposing the photoconductive belt. Poor laser exposure results in the negative charges remaining on the drum instead of being “erased” by the laser beam, thereby retarding toner transfer from the toner cartridges. Replace the laser scanner.

Dark, vertical streaks and smears on the entire page

This is usually due to the accumulator belt toner waste bin being ﬁlled and spilling out on the belt. The spilled toner is then being transferred to the print. Most prominent in the middle of the print and in the yellow band. A defective cleaning blade could also cause this. In either case, replacing the imaging unit should ﬁx the problem.

Service Manual

B-5

Page 38

Test Prints

One primary color faded or pale OR a single color has a dark vertical streak

This indicates a problem with a single toner cartridge. Replacing the toner cartridge should ﬁx the problem.

If it does not, there may be a problem with the toner cartridge selector/eject unit. It may not be pushing the cartridge quite far enough to make proper contact with the photoconductive belt, resulting in poor toner transfer. Replace the toner cartridge selector/eject unit.

Lastly, poor electro-mechanical contact my be the problem, although this usually shows itself as light, horizontal streaks and lines. Replace the toner cartridge biasing assembly.

Single white spot appear in the same place on the print

This indicates a bad spot has developed on the imaging unit’s photoconductive belt which will not transfer toner. The imaging unit must be replaced. If the spot appears to migrate vertically from print to print then the defect is on the imaging unit’s accumulator belt. In either case the imaging unit must be replaced.

Service Manual

B-6

Page 39

Test Prints

Contamination of one color by another

This is most noticeable on solid primary ﬁlls. This is caused by a defective photoconductive cleaning blade. The blade is not scraping off all of the untransferred toner from the previous pass of the photoconductive belt to the accumulator belt prior to the next toner’s transfer to the photoconductive belt. Replacing the imaging unit corrects this problem.

Rarely, a sheet of paper can become folded and jam in the imaging unit, smudging the image.

A single color is cut off, with a jagged edge, on either the left or right side.

The toner cartridge above the missing color is keeping that color’s toner cartridge from fully opening its door.

If the symptom appears in yellow, ﬁx or replace the black toner cartridge.

If the symptom appears in magenta, ﬁx or replace the yellow toner cartridge.

If the symptom appears in cyan, ﬁx or replace the black magenta cartridge.

Service Manual

B-7

Page 40

Test Prints

Interpreting Service Print 2

Service Print 2 is useful for evaluating the condition of the

imaging unit. With a properly functioning imaging unit and printer , you should see the following:

1. Diagonal lines. These two lines should be smooth and

unbroken.

2. Crosshairs. A thin white crosshair should be visible in each

block square. As the photoconductive belt ages and fatigues, the crosshair in the top box will disappear followed in time by

the lower crosshairs. The belt may “rejuvenate” after a few hours of non-use, but this will only last for a few prints before fatigue sets in again.

3. Fine parallel lines. Distinct parallel lines, both horizontal and

vertical, should be viewable. No mottling or b lending should be seen. All vertical lines should be identical in appearance and thickness to their horizontal counterparts.

4. 2 pt. text. The 2point te xt, the smallest printed on the test print,

should be easily readable.

5. Registration. Thin horizontal composite black lines will show

misconvergence if each pass of the accumulator belt does not properly register with each pass of the photoconductive belt.

6. Blended ﬁlls. The ﬁlls should be smooth and e v en in both the

primary and secondary color ﬁlls.

9013-74

Service Manual

B-8

Page 41

Index

Adobe PostScript Level 2 all-black print antistatic mat authorization code, TCP/IP

6-24

8-1

1-2

8-29

black print blank print block diagram of printer

6-24

5-2

checking print registration

5-16

2-14

2-3

cleaning the printer clearances, printer color correction communication parameters

serial and parallel ports communication setup conﬁguration page

description

printing conﬁguring

a Novell server for the printer

TCP/IP connecting

the printer to an Ethernet network

the printer to the Macintosh

the printer to the PC

to a Token Ring network connectors, rear panel Customer Support Hotline

9-4

2-35

7-1

2-21

1-9

9-32

2-9

9-34

2-8

4-10

2-9

2-8

2-34

2-9

Fast Color ﬁeld replaceable units list Font Downloader Utility front panel

FRUs

1-2

A-1

2-11

9-2

6-19

A-1

1-7

description menu messages

parts list removal and replacement

8-1

Graphics Supplies Order Desk grease

7-2

2-3

HAL, automated fax system hard error health LED Highly Automated Library (HAL)

1-12

4-7

image processor board

theory

troubleshooting imaging unit, do not expose to light interface cables IP address, setting

5-18

2-3

9-5

2-30

jams

6-11

2-4

4-7

4-4

driver and communication setup

electrically-conductive grease engine failure codes EuroHAL, automated fax system

6-19

7-2

2-21

4-8

key operator, training

4-1

laser electrophotography

2-11

1-2

5-4

laser printing, theory

6-25

7-2

5-9

laser scanner Laserwriter Utility legal-size printing light print lubrication

5-4

Service Manual

Index-1

Page 42

Macintosh

connecting the printer printing

using the Error Handler Utility measuring power supply voltages media problems Microsoft Windows

standard PostScript printer driver missing color molybdenum-based grease

3-1

6-25

6-8

2-8

7-2

3-4

6-3

2-27

network card

1-10

1-2

8-28

2-33

2-34

3-7

description

installing

LEDs normal power-up self-test, image processor Novell conﬁguration Novell Netware veriﬁcation null modem cable

OS/2

connection veriﬁcation

loading drivers

2-28

3-6

paper path jams paper picking, theory PC

connecting the printer

using the Error Handler Utility PC veriﬁcation PCL printer language, optional Phaser 550 PPD ﬁle, installing Phaser 550,description photoconductive belt PostScript Level 2 power supply

theory

verifying

5-17

6-3

3-5

6-8

1-2

5-12

1-2

5-4

2-9

1-2

2-21

3-8

9-7

power-up sequence pre-exposure during laser printing pre-installation interview Presentation mode pre-transfer corona preventive maintenance print modes, description print quality problems print registration, checking printcap ﬁle printer color correction printer page description ﬁle printer, troubleshooting printing

from a from a PC from a workstation test prints the conﬁguration page the startup page

2-33

3-1

6-1

2-1

1-2

1-4

7-1

5-15

6-24

9-34

9-32

3-4

6-1

3-5

3-9

9-4

RAM and printer capabilities 1-3 RAM SIMMs, installing rear panel

connectors

description registration, checking regulatory standards removal procedures repeated spots or lines on print required tools, disassembly resetting NVRAM, image processor

1-10

1-9

8-24, 8-26

9-34

1-17

8-1

6-26

8-1

5-6

9-31

Index-2

Phaser 550 Color Printer

Page 43

safety interlock 6-5 SCSI address SCSI hard disk drive, installing on the

self-test modes, image processor self-test print sensing media Service Option S0 service support, calling skewed copy smart cards soft error Standard Windows PostScript driver,

startup page

description printing

supplies, ordering

2-11

printer

2-11

6-3

1-12

6-9

1-2

1-12

updating

2-13

9-4

9-6

2-1

4-11

2-28

4-7

TCP/IP

conﬁguring enabling

veriﬁcation of printing terminator, SCSI Test Pattern Generator, using test print button test prints

descriptions and interpreting

printing testing the print engine theory of laser printing time-outs, Windows Token Ring, connecting a printer to toner cartridges during printing transmission retry, Windows tray sensors troubleshooting

the image processor

the printer

2-35

8-29

3-9

2-11

D-1

1-11

B-1

9-4

6-2

5-4

2-26

2-9

5-10

2-26

1-12

9-5

6-1

using the Error Handler utility

for Macintosh

3-8

for PC for workstation

3-4

3-10

verifying

a PC can print a workstation can print using the TCP/IP protocols

3-5

3-9

white print 6-24 Windows 3.1

driver veriﬁcation

Tektronix driver Windows 95 printer driver Windows printer driver

conﬁguring

installing workstation

connecting the printer

using the Error Handler Utility workstation veriﬁcation wrinkled print

2-25

2-24

6-30

3-6

2-24

2-22

2-9

3-9

3-10

Service Manual

Index-3

Page 44

Page 45

Figure A-3 The internal printer

Service Manual

9322-72

A-5

Page 46

Table A-4 Supplies and accessories

Part number Serial number

Effective Discontinued

Supply 016-1457-00 Imaging unit Supply 016-1323-00 Fuser (110 VAC) Supply 016-1354-00 Fuser (220 VAC) Supply 436-0282-00 Paper tray, Letter-size Supply 436-0283-00 Paper tray, A4-size Supply 436-0314-00 Paper tray, Legal-size Supply 436-0284-00 Transparency tray, Letter-size Supply 436-0285-00 Transparency tray, A4-size

436-0297-01 Output tray (standard) 119-4799-01 Lower Tray Assembly (no trays supplied) 070-9317-00 Phaser 550 User Manual (English) 070-9317-10 Phaser 550 User Manual (French) 070-9317-20 Phaser 550 User Manual (Italian) 070-9317-30 Phaser 550 User Manual (German) 070-9317-40 Phaser 550 User Manual (Spanish) 070-9117-00 Phaser 550 Drivers and Utilities Printing

070-9508-00 Phaser Share Network Manual 070-9539-00 Phaser Share Status Monitor Manual 070-9322-00 Phaser 550 Service Manual 063-2179-03 Ethernet Network Software Kit 063-2181-02 LocalTalk Network Software Kit 063-2486-00 Drivers and Utilities Software Kit 063-2183-02 TokenRing Network Software Kit 012-1379-00 Cable Serial, 9-pin to 9-pin 012-1299-00 Cable, interconnect., 2.5 m 50-pins. to

012-1468-00 Cable, Parallel w/IEEE 1284C (mini) 012-1465-00 Cable, SCSI II to 50-pin SCSI 012-1379-00 Cable, Serial, 9-pin to 9-pin 012-1380-00 Cable, Serial, 9-pin to 25-pin 013-0299-00 Parallel cable adapter (standard to mini) 003-1496-00 Toner Vacuum (115 VA C)

Quantity Name and description

Reference Manual

25-pins

Table A-4 Supplies and accessories (cont'd.)

Part number Serial number

Effective Discontinued

Supply 016-1414-00 1 Transparency, Letter-size, 50 sheets Supply 016-1415-00 1 Transparency, Metric-size, 50 sheets Supply 016-1368-00 1 Paper, A-size, 500 sheets Supply 016-1369-00 1 Paper, A4-size, 500 sheets

013-0297-00 1 SCSI cable adapter, 50-pin to SCSI II 103-0030-00 1 Adapter, Connector, BNC 011-0123-00 1 Coaxial Term. 50 ohms, BNC 016-1417-00 1 Black toner cartridge 016-1418-00 1 Cyan toner cartridge 016-1419-00 1 Magenta toner cartridge 016-1420-00 1 Yellow toner cartridge 161-0066-00 1 Power cord, domestic 161-0066-09 1 Power cord, 220V Euro 161-0066-10 1 Power cord, U.K. 161-0066-11 1 Power cord, Australian 161-0154-00 1 Power cord, Swiss 016-1318-00 1 Transfer Kit (Transfer roll and Waste box) 118-9070-00 1 Scorotron charger corona unit 006-7998-00 1 Conductive grease, silicon 006-7971-00 1 Imaging unit light shield/drape 065-0553-00 1 Shipping box, replacement 4685F16 1 16 Mbyte RAM upgrade 4685F32 1 32 Mbyte RAM upgrade Z550FX 1 Extended features SIMM (requires either

4676FTA 1 Auxiliary feeder 4676FTA01 1 Auxiliary feeder, metric 4676FP1 1 Ethernet card upgrade 4676FP2 1 TCP/IP upgrade (required 4676FP1) 4676FP3 1 LocalTalk/Serial card upgrade 4676FP4 1 TokenRing card upgrade 4540 1 Phaser Copystation

Quantity Name and description

4685F16 or 4685F32)

A-6

003-1497-00 Toner Vacuum (220 VA C) 003-1498-00 Filter for 3M Toner Vacuums

Phaser 550 Color Printer

Page 47

Appendix

Field Replaceable Units List

This appendix provides a list of ﬁeld replaceable units for the printer.

Changes to Tektronix instruments are made to accommodate improved components as they become available. It is important when ordering parts to include the following information:

■

Component's part number.

Instrument type or number.

■

Instrument serial number.

■

Modiﬁcation number, if any.

Service Manual

A-1

Page 48

Field Replaceable Units List

Table A-1 FRU parts list of the printer cabinet

Figure A-1

1 118-9205-00 1 Front door 2 118-9204-00 1 Lower front cover 3 118-9203-00 1 Upper front cover (operation panel)

4 118-9206-00 1 Right side cover rear 5 118-9208-00 1 Right side cover front 6 118-9207-00 1 Right side cover lower 7 118-9182-00 1 Bottom front cover 8 436-0297-01 1 Output tray (standard)

Part number Serial number

Effective Discontinued

Quantity Name and description

w/display board

Figure A-1 Cabinet FRUs

9013-44

A-2

Phaser 550 Color Printer

Page 49

Field Replaceable Units List

Table A-2 FRU part list of the printer cabinet

Figure A-2

1 118-9202-00 1 Lower rear cover 2 118-9330-00

3 118-9198-00 1 Top cover 4 118-9200-00 1 Left side cover 5 118-9199-00 1 SIMM access door 6 118-9184-00 1 Manual feed tray 7 118-9183-00 1 Left door 8 334-8366-30 1 Logo, Phaser 550

Part number Serial number

Effective Discontinued

118-9331-00

Quantity Name and description

1 Upper rear cover (110 VAC)

Upper rear cover (220 VAC)

Figure A-2 Cabinet FRUs

9013-45

Service Manual

A-3

Page 50

Field Replaceable Units List

Table A-3 FRU parts list of the exploded printer

Figure A-3

1 118-9192-00 1 Ozone fan 2 118-9269-00 1 Engine control board 3 118-9191-00 1 Fuser/toner cartridge fan 4 118-9154-00

5 118-9181-00 1 Toner cartridge drive motor 6 118-9186-00 1 Toner cartridge selector/paper-eject unit 7 118-9268-00 1 Laser scanner 8 118-9333-00 1 Laser motor drive board 9 118-9166-00 1 Pre-transfer lamp 10 118-9169-00 1 Toner cartridge biasing assembly 11 118-9170-00 1 Toner level sensor board 12 118-9164-00 1 Pre-exposure erase lamp 13 118-9165-00 1 Image density sensor assembly 14 118-9167-00 1 Tray sensor board 15 118-9185-00 1 Paper feeder 16 118-9329-00 1 High-voltage board 17 671-3133-00 1 16-Mbyte RAM SIMM 17 671-3138-00 1 32-Mbyte RAM SIMM 18 671-3686-00 1 Image processing board w/rear panel 19a

19b 19c 19d

20 118-9196-00 1 Engine driver board 21 118-9173-00 1 Left door-open switch 22 118-9193-00 1 Main motor 23 118-9172-00 1 Home-position sensor assembly 24 118-9171-00 1 Charger sensor board 25 118-9194-00 1 Paper feed motor 26 118-9190-00 1 Fuser installed switch 27 118-9195-00 1 Cleaning board 28 118-9168-00 1 Toner cartridge drive unit 30a

30b 31 671-3847-00 1 PostScript Code ROM SIMM (masked)

Part number Serial number

Effective Discontinued

118-9154-01 118-9332-00

671-3468-02 671-3469-00 671-3470-02 386-6815-00 213-1090-00

671-3805-00 671-3688-00

671-3847-00 1 Masked ROM, engine control board Z550 118-9174-00 1 Hardware kit 118-9176-00 1 Gear kit 650-3170-00 1 Spring kit

Quantity Name and description

1 1 1

1 1 1 1 2

1 Extended Features SIMM, Roman Font

Power Supply (110 - 120 VAC) Power Supply (100 - 120 VAC)-Japan Power Supply (220 VAC)

Ethernet network card LocalTalk/serial network card Token Ring network card Blank cover plate (no card installed) Blank cover plate thumbscrews

Extended Features SIMM, Kanji Font

A-4

Phaser 550 Color Printer

Page 51

Chapter

Checks and Adjustments

This chapter discusses using the front panel’s interactive mode to review and change the printer’s operation. It also contains the procedures to calibrate the printer after you replace key Field Replaceable Units and to evaluate the printer's functionality.

Required tools

■

Magnifying lens (preferably illuminating)

Phillips screwdriver

Service Manual

9-1

Page 52

Checks and Adjustments

Front panel menu

The print engine features an interactive front panel menu that allows you to review or change the printer’s stored parameters as well as initiate test prints and printer service routines. When the front panel displays to enter the printer’s interactive menu.

Figure 9-1 Menu map

Idle

Ready , p ress Menu

Help Pages

Menu Map

Test Print

Demonstration Page

Startup Page

Configuration Page

Service Print 1

Service Print 2

Calibrate Colors

Adjust light/dark

Auto Calibrate

Adjust each color

reference page

Adjust cyan

Adjust magenta

Adjust yellow

Adjust black

Reset Adjustments

System counts

Page count

Imaging Unit

Transfer Kit

Fuser

TekColor Correction

TekColor: None

TekColor: Vivid Color

TekColor:Display

TekColor: SWOP

TekColor: Euroscale

TekColor: Commercial

Monochrome

Print Quality

Standard

Enhanced

Premium

Fast Color

Presentation

9-2

Phaser 550 Color Printer

Page 53

Figure 9-2 Menu map

Printer defaults menu

Default tray

Upper

Middle

Lower

Media Tray

Manual Feed

Paper

Transparency

Auto Select

Startup Page

Startup Page: enabled

Startup Page: disabled

Startup Mode

Startup Mode: enabled

Startup Mode: disabled

Output order

Serial settings*

Baud Rate

Baud Rate: 300

Baude Rate: 600

Baud Rate: 1200

Baud Rate: 2400

Baud Rate: 4800

Baud Rate: 9600

Baud Rate: 19200

Baud Rate: 38400

Data Bits

Data Bits: 7

Data Bits: 8

Stop Bits

Stop Bits:1

Stop Bits: 2

Parity

Checks and Adjustments

Network settings**

TCP/IP***

TCP/IP: enabled

TCP/IP: disabled

EtherTalk

EtherTalk: enabled

EtherTalk: disabled

Netware

Novell: enabled

Novell: disabled

HTTP***

HTTP: enabled

HTTP: disabled

Token Talk****



Token Talk: enabled

Token Talk: disabled

Language menu

Language: English

Language: Español

Language: Français

Language: Deutsch

Language: Italiano

Language: Japanese

Set IP Address

Selected

Press buttons 2 & 3

XXX.XXX.XXX.XXX

Increment Shift Set

Output order: face up

Output order: face down

Energy Star

Energy Star: enabled

Energy Star: disabled

Energy Star timeout

Energy Star timeout: xxx hrs

Timeout: xxx hrs

Print Check

Enabled

Disabled

Print Check timeout

Flow Control

Xon/Xoff

Even

Odd

Mark

Space

None

dtr

if P3 option installed

if P2 option installed

***

if P4 option installed

****

9322-67

Service Manual

9-3

Page 54

Checks and Adjustments

Printing test prints

The prints printed via the front panel the are generated by the image processor. While the printer is idle you can use the front panel to print an image stored in the image processor such as the conﬁguration page.

Print service test prints

The service prints allow you to evaluate the printer’s print quality. Service Print 1 is four pages of 25% tint primary color ﬁlls. Service Print 2 prints in 600 dpi.

Press the Menu button.

With the Help pages menu displayed, scroll to the Service

Print 1

or Service Print 2 menu item. Press Print .

Printing the conﬁguration page

The conﬁguration page shows a great deal of information regarding the data and set-up values stored in NVRAM. Refer to the topic, “The conﬁguration page” on page 2-14 for an explanation of the conﬁguration page. In the same Help pages menu you can also print the startup page.

Press the Menu button.

With the Help pages menu displayed, scroll to the Configuration

menu item. Press Print .

Page

Printing the demonstration pages

Demo pages demonstrate the capabilities of the printer.

Press the Menu button.

With the Help pages menu displayed, scroll to the Demonstration

item. Press Print .

Page

Printing the print engine’s test print

The print engine can print a test print independent of the image processor. The print is a composite gray ﬁll composed of cyan, magenta and yellow toner. No black toner is used in the print.

9-4

Press and hold for 2 seconds the Test Print button in the center of the upper rear cover.

This veriﬁes the print engine’s ability to print independent of the image processor. Do not use this print to verify print quality.

Phaser 550 Color Printer

Page 55

Image processor normal indicators

There are three indications that the print engine and its image processor are powered-up and operating normally: the front panel POWER LED is on (steady), processor health light is blinking (the ﬂashing health light is viewable through the grill behind the manual feed tray).

When the printer is receiving or processing data, the front panel displays the messages

for Data

Ready is displayed on the front panel LCD display and the image

Receiving Data and Processing Data . The message Waiting

may also be displayed periodically.

Image processor hard and soft error indicators

Image processor hard errors are self-test failures that would prevent the printer from printing a page. Hard errors cause the health light to stop blinking and remain

Soft errors are errors that occur during the normal power-up self-test that, while limiting the printer, would not stop the printer from printing. A message regarding the soft error would then be printed on the startup page (even if the startup page had been turned off). Soft errors include failures of the expansion SIMMs, as well as the SCSI, serial, LocalTalk, parallel, and Ethernet ports.

or off . Hard errors are also any error that occurs during service mode.

Checks and Adjustments

Service Manual

9-5

Page 56

Checks and Adjustments

Printer self-diagnostics

The printer’s image processor features four types of self-test modes. The type of self-tests run depend upon which front panel buttons are pressed while the printer is turned on. The button combinations are listed here.

■

Turning on the printer or restarting the printer remotely executes normal image processor power-up self-tests and then, if the tests pass, proceed to launch its PostScript interpreter.

Pressing and holding Button 1 (the left-most button, marked Exit), as

■

you turn on the printer, skips the image processor’s self tests and proceed directly to launching its PostScript interpreter.

■

Pressing and holding Button 2 (the second from the left button), as you turn on the printer, executes the image processor’s veriﬁcation self-tests. These series of test continue until the printer is turned off.

Pressing and holding Button 3, as you turn on the printer, executes

■

interactive service test with the image processor board and the print engine.

■

Pressing and holding Button 1 and 4, as you turn on the printer, allows you to reset the NVRAM to its factory-default values. Refer to the later topic, “Resetting NVRAM” on page 9-31. This also reset the NVRAM of an installed network card.

9-6

Phaser 550 Color Printer

Page 57

Checks and Adjustments

Normal power-up self-tests.

a problem is encountered with the image processor's expansion memory or other options, then the information is printed on the printer's startup page. Normal power-up tests take slightly longer than one minute to complete.

The health LED, located on the image processor board, ﬂashing in a regular, one ﬂash-per-second rate means CPU is running.

Kernel tests.

then, if no error occurs, goes directly to PostScript initialization.

Veriﬁcation test.

all host cables from the printer before starting the test. A fully conﬁgured printer takes slightly longer than 3 minutes to execute the tests. The image processor continuously executes a series of tests of its CPU kernel, RAM and other image processor components. The series of tests run continuously until an error occurs. The printer continuously loops on that test indicating the number of times the test passed and failed. The printer must be turned off to exit the test series.

The printer’s image processor executes its core set of CPU tests and

This test requires no paper or customer interaction. Disconnect

This test requires no paper or customer interaction. If

no errors were detected and the image processor's

Service tests.

with the addition of some test prints and also being able to interact with the print engine motors, solenoids and sensors. You select and start tests using the front panel. The message front panel when the service test mode is activated. If no error is detected, the front panel displays the ﬁrst test. Using the front panel buttons, scroll to an individual test and run it. You can run any test in any order you wish. In service mode, you can also scroll to a set of tests that allow you to start a single print or to print continuously. The tests are described in Table 9-1, “Print engine service test descriptions,” on page 9-8.

Service tests include all the available image processor self-tests

Service Tests is displayed on the top line of the

Service Manual

9-7

Page 58

Checks and Adjustments

Table 9-1 Print engine service test descriptions

Test Sub-test Description

DRAM Group Test Executes a series of test, numbering 30 thru 3D, on the image

IP Board Group Test Executes a series of tests, numbering 10 thru 25, on the image 1c Font ROM Checksum Performs a checksum calculation on the font ROM.

2e SmartCard Installed? Verify that a network card is installed. 2f SmartCard Performs a series of tests on the installed network card. 40 Engine Status Displays the contents of 35 status registers. The contents are

41 Front Panel Test Series of front panel test. All LCD elements are turned on. 42 Engine Version Indicates the ﬁrmware version level of the print engine ROM.

43 600 dpi test page Continuously prints a 600 dpi test page. 44 1200 dpi test page Continuously prints a 1200 dpi test page. 45 Single paper path Processes a single sheet of paper through the paper path. 46 Continuous Paper Path Continuously processes sheets of paper through the paper

47 Eng Ctrl Brd Health Tests the engine control board. 48 Set Top Margin Allows you to change the height of the top margin. The default

49 Set Left Margin Allows you to change the width of the left margin. The default 4a Display Fuser Temp Displays the temperature of the fuser in degrees Fahrenheit.

4b ProcessUnit Count Indicates the number of sheets of media that have been

4c 2nd Xfer Unit Count Indicates the number of sheets of media that have been

4d FuserUnit Count Indicates the number of sheets of media that have been

4e Copy Count Indicates the number of prints successfully processed through 4f Sensor Group A

This test group automatically enters the engine’s

Fuser Unit Indicates if the fuser is installed. Remo ve the fuser to see if the Align. Roller Indicates when the aligning roller sensor is actuated. Open the

diagnostic mode (a lower lev el mode). When you e xit the test group it asks you if you wish

Fuser Exit Indicates when the fuser exit sensor is actuated. Open the

to exit diagnostic mode. If y ou wish to run more lower level test, choose “no.” If you conﬁrm “yes,” you must wait two minutes for the printer to initialize before continuing

Paper Exit Indicates when the paper exit sensor is actuated. StdTraySwitch 1 Indicates the state of the three tray sensor switches. Pull out StdTraySwitch 2 StdTraySwitch 3

with other Service tests.

Opt1TraySwitch 1 Indicates the state of the three tray sensor switches of the Opt1TraySwitch 2 Opt1TraySwitch 3

processor RAM. A failure indicates a problem with the image processor’s RAM SIMMS or the on-board RAM.

processor board.

encoded in hexadecimal. Refer to the later topic “Service mode status code meanings” on page 9-11 for information on decoding the meaning of each status buffer.

Press each button to see if the button action is detected.

path until stopped.

setting is 30 (5 mm). 6 increments equal 1 mm setting is 30 5 mm. 6 increments equal 1 mm

Normally it should read about 160 processed through the imaging unit. Reset the value to 0 by

pressing the Exit button. processed by the pre-transfer charger. Reset the value to 0 by

pressing the Exit button. processed through the fuser. Reset the value to 0 by pressing

the Exit button. the printer. Reset the value to 0 by pressing the Exit button. sensor detects the change. left side door and insert a sheet of paper into the paper path to

actuate the sensor ﬂag. right side door and manually actuate the ﬂag.

the tray and then open the left door to access and manually push the switches. Switch one is the rear-most switch.

upper tray in the optional feeder. Pull out the tray and then open the left door to access and manually push the switches. Switch 1 is the rear-most switch.

lower tray in the optional feeder. Pull out the tray and then open the left door to access and manually push the switches. Switch one is the rear-most switch.

9-8

Phaser 550 Color Printer

Page 59

Checks and Adjustments

50 Sensor Group B

This test group automatically enters the engine’s diagnostic mode (a lower lev el mode). When you e xit the test group it asks you if you wish to exit diagnostic mode. If y ou wish to run more lower level test, choose “no.” If you conﬁrm “yes,” you must wait two minutes for the printer to initialize before continuing with other Service tests.

51 Tray Status Indicates the type of tray (paper or transparency) installed in 52 Extended Paper Path Standard Tray Face Up Pick and processes a sheet of paper from the indicated tray

53 Clean Accmlr Belt Starts a cleaning cycle to remove contamination from the 54 Cam Motor/Sensor

This test group automatically enters the engine’s diagnostic mode. When you exit the test group it will ask you if you wish to exit diagnostic mode. If you conﬁrm you must wait two minutes for the printer to initialize before continuing with other Service tests.

55 Motors and Fans This test group automatically

enters the engine’s diagnostic mode. When you exit the test group it will ask you if you wish to exit diagnostic mode. If you conﬁrm you must wait two minutes for the printer to initialize before continuing with other Service tests.

Output Tray Indicates the state of the output tray full sensor. Manually lift Manual Feed Indicates if the manual feed sensor is closed by a sheet of Std Tray Paper Indicates if the standard tray is loaded with paper. Remove the Opt1 Tray Paper Indicates if the upper optional tray is loaded with paper. Opt2 Tray Paper Indicates if the optional tray is loaded with paper. Remove the OHP or Paper? Indicates if the transparency sensor is blocked (paper) or open

Cyan Cartrg Indicates if each toner cartridge is installed. Magenta Cartrg Yellow Cartrg Black Cartrg Front & Rt. Door Indicates if the front and right doors are closed. Open either

Left Access Door Indicates if the left side access door is opened, Open the door Option Acc Door Indicates if the left side access door to the lower feeder is

Standard Tray Face Down Opt 1 Tray Face Up Opt 1 Tray Face Down Opt 2 Tray Face Up Opt 2 Tray Face Down

Cyan Cam Motor/Sensor Individually activates the motors for the toner cartridge Magenta Cam Motor/Sensor Yellow Cam Motor/Sensor Black Cam Motor/Sensor

Main Motor Energizes the main motor until stopped. Paper Feed Motor Energizes the paper feed motor until stopped. Cartridge Motor Energizes the toner cartridge motor until stopped. Laser Motor Energizes the laser scanner motor until stopped. Option Feed Motor Energizes the optional paper feed motor until stopped. Ozone fan Tests the ozone fan. Check the fan for proper operation. Fuser fan Tests the fuser fan. Check the fan for proper operation. Power supply Fan Tests the power supply fan. Check the fan for proper

the sensor’s ﬂag to see if the sensor detected the change. paper. tray to see if the sensor detected the change. Remove the tray to see if the sensor detected the change. tray to see if the sensor detected the change. (transparency ﬁlm or no media). Open the left side door and

insert a sheet of paper into the paper path.

door to see if the change is detected. to see if the change is detected. opened. Open the door to see if the change is detected. each feeder. thru the paper path. As indicated by the test, the sheet can be

routed through the reverser if Face Down is selected.

accumulator belt. This cycle takes about 1 minute. selector. Remove the imaging unit to observe the cartridge

being moved when you activate the test. Open the right door to observe the cams rotate. The front panel indicates the cam sensor detecting the change. If you open either the front door or the right door, you must override the door open switch.

operation.

Service Manual

9-9

Page 60

Checks and Adjustments

56 Misc. Components

57 EXIT Engine Diag Exits engine diagnostics mode. Wait two minutes for the **Start PostScript** Quits service diagnostics and start PostScript. The printer

**Restart System** Quit the diagnostic mode and restart the printer. The printer

Black Cartridge Clutch Energizes the toner cartridge motor and the clutch for the each Yellow Cartridge Clutch Magenta Cartridge Clutch Cyan Cartridge Clutch Registration Clutch Activates the aligning roller clutch. Listen for the clutch as it is

Transfer Roller Solenoid Raises and lowers the position of the transfer roller. Listen for

Cleaning Blade Solenoid Activates the toner cartridge motor and then the clean blade

Face Up/Down Solenoid Activates the f ace up face down solenoid which directs a sheet

Switch Back Solenoid Activates the switch back solenoid which pushes a sheet of

Standard Pick Solenoid Activates the standard pick solenoid which, when the paper

Opt 1 Pick Solenoid Activates the optional feeder’s upper and lower tray pick Opt 2 Pick Solenoid

Erasers Turn on the pre-exposer lamp and the pre transfer lamps.

toner cartridge drive gear. Open the front cover and remove the imaging unit. Activate the test and observe the toner cartridge’s developer roller rotate. If you open either the front door or the right door, you must override the door open switch

engaged and disengaged. the roller as it is raised and lowered. The front panel indicates

if the roller position was properly sensed. If you open either the front door or the right door, you must override the door open switch

solenoid to engage the cleaning blade roller (whose cams actuate the cleaning blade in the imaging unit). Remove the imaging unit to observe the cleaning blade’s cam roller. If y ou open either the front door or the right door, you must override the door open switch

of paper into the reverse. Open the right side jam access panel and observe the reverser ﬁngers as they are actuated.

paper in the reverser to the exit roller. Open the right side jam access panel and observe the switch back plates move.

feed motor is running, would engage the pick roller and pick a sheet of paper.

solenoids. When the paper feed motor is running, they engage the upper or lower pick roller and pick a sheet of paper.

Remove the imaging unit to see if all the LEDs of the lamps arrays are lit.

engine to initialize before continuing with other Service tests. must exit Engine Diagnostic mode (Test 57) before restarting

the system or starting PostScript. Otherwise the printer will “hang.”

will execute it power-up self-tests and then start PostScript. The printer must exit Engine Diagnostic mode (Test 57) before restarting the system or starting PostScript. Otherwise the printer will “hang.”

9-10

Phaser 550 Color Printer

Page 61

Service mode status code meanings

Service diagnostics test

page 9-12 lists status codes displayed on the front panel when the print engine is in service mode and the test selected is 41 Engine Status. When the print engine detects a valid command or byte without parity error, the print engine controller board sends back the status of its condition in 35 different status buffers to the image processor board. The contents of these buffers, in turn, can be displayed on the front panel using test back, then the front panel reports a communication error.

To view the status buffers, scroll to service diagnostic test 41 Engine Status and then press the

start button. Press the prev and next button to scroll through the

list of 35 status buffers.

To decode a front panel display of a status buffer’s contents you must decode the hexadecimal display into it’s binary equivalent. Note that some bits indicate something signiﬁcant when they are set (a logical 1 state) others indicate something signiﬁcant when they are clear (a logical 0 state). The following table gives several front panel hex states as examples of different bit patterns you may encounter for each of the 35 status buffers.

41 Engine Status

41 Engine Status . If a status condition is not sent

Checks and Adjustments

Table 9-2, “Status code meanings,” on

Some of the buffers indicate a general condition or warning. In these cases, depending on which bit is set in the status buffer, you refer to another status buffer for details on the speciﬁc error condition. This is illustrated as a diagnostic tree in the following ﬁgure.

4(5)

4(4) 4(3) 4(2) 4(1)

46 44

0(2)

17 31 32

0(1)

1(6) 1(4) 1(3) 1(1)

5(5)5(5)15

8 2(6) 2(4)

Example: 4(3)

Status Buffer 4

Status Buffer defining actual problem

Bit 3 set to Logical 1

14(5)14(6) 14(4) 14(3) 14(2) 14(1)

24 43 16 22 25

Figure 9-3 Status codes diagnostic tree

Service Manual

9322-71

9-11

Page 62

Checks and Adjustments

Table 9-2 Status code meanings

Status State

Status - 0 General Status

Status - 0 Example

Front

Binary

Meaning/Description Panel Hex

7 . . . 0

This buffer gives the engine’s general response to the current action.

0. Odd parity.

1. 1= The engine has an error condition; printing is disabled. The engine is in either a

2. 1 = The engine is in a warning state or a test mode state. Printing is not possible , see

Status - 4 for details. 0 = The engine is not in a warning or test mode state.

3. 1 = The engine is warming up and initializing or is ready for toner patch and gamma table data exchange. Printing is not possible at this time, see Status - 33 for details. 0 = Engine is ﬁnished warming up and initializing.

4. 1 = Because of a jam or misprint, the image data must be resent. See Status - 6 for details. 0 = No print data re-transmit request.

5. 1 = The engine is printing. 0 = The engine is in a standby mode.

6. 1 = The NPRINT signal will start the printing action. NPRINT is the command sent by the image processor to the print engine control board for one print. This starts the printing process. NPRINT is not allowed if a jam has occurred. 0 = The engine cannot print because the engine is warming up, an error has occurred or the engine is in test mode.

7. 1 = A communication error has occurred. 0 = There is no communication error.

0D 0000 1101 This example shows the relationship between the binary-decoded status byte and the

meaning of each bit.

warning state or a test mode state. See Status - 4 f or details. Printing may be possib le depending on the mode; printing is possible if the bit indicates warming, it is not possible if the bit indicates the printer is in a test mode. 0 = Engine is in normal operating condition.

Status - 0 Example

4C 0100 1100

0. 1: Odd parity (in this case 1, other times it could be 0).

1. 0: The engine is in a normal condition.

2. 1: The engine is in a warning state or a test mode. See Status 4 for details. Printing

may be possible, depending on whether the printing is in a warning state (printing possible) or a test mode state (printing not possible).

3. 1: The engine is also warming up and initializing or is ready for toner patch and gamma table data exchange. Printing is not possible, see Status - 33 for details.

4. 0: There is no print data re-transmit request.

5. 0: The printer is in a standby condition.

6. 0: The engine cannot print because the it is warming up and initializing, or the there is

an error condition, or the printer is in a test mode (diagnostics).

7. 0: There is no communication error.

■ The print engine is operating normally (ready to transmit and receive instructions).

■ The engine is in either a warning state or a test mode state. See Status - 4 for details.

■ The engine is also warming up and initializing or is ready for toner patch and gamma

table data exchange.

■ There is no print data re-transmit request.

■ The printer is in standby condition.

■ The NPRINT signal will start the printing action.

■ There is no communication error.

9-12

Phaser 550 Color Printer

Page 63

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 1 General Error Status

Status - 1 Example

Status - 2 General Hardware Status

Status - 2 Example

Front

Binary

Meaning/Description Panel Hex

7 . . . 0

This status buffer shows the error condition when Status - 0 Bit 1 is 1.

0. Odd parity.

1. 1= Print engine hardware error condition. See Status-2 for details.

0 = Hardware is operating normally.

2. 1 = Not used. 0 = Always set to 0.

3. 1 = A media jam has occurred. See Status-8 and Status-15 for details. 0 = No media jams.

4. 1 = A media error has occurred. See Status-15 for details. 0 = No media error has occurred.

5. 1 = Not used. 0 = Always set to 0.

6. 1 = Electrophotographic components are missing. See Status-5 for details. 0 = All electrophotographic components are in place.

7. 1 = A communication error has occurred. 0 = There is no communication error.

01 0000 0001

■ A hardware error has occurred. See Status-2 for details.

■ The media is not jammed.

■ There is no paper error.

■ Electrophotographic (imaging unit, fuser, second bias transfer roller, and the toner

cartridges) components are installed.

■ There is no communication error.

0. Odd parity.

1. 1= An engine control circuit error has occurred.

0 = Engine control circuits are operating normally.

2. 1 = A motor error has occurred. See Status-20 for details. 0 = All motors are operating normally.

3. 1 = A laser scanner error has occurred. See Status-23 for details. 0 = The laser scanner is operating normally.

4. 1 = One or more of the doors are open. See Status 21 for details. 0 = All doors are closed.

5. 1 = Not used. 0 = Always set to 0.

6. 1 = A process error has occurred. See Status-14 for details. 0 = Image processing is normal.

7. 1 = A communication error has occurred. 0 = There is no communication error.

01 0000 0001 This status shows hardware error inf ormation. It shows the details when Status - 0 Bit 1,

and Status -1 Bit 1 are ON. In this example the hardware is functioning normally.

■ The circuits on the print engine controller board are operating normally.

■ All motors are operating normally.

■ The laser scanner is operating normally.

■ All printer doors are closed.

■ The image processor is operating normally.

■ There is no communication error.

Checks and Adjustments

Service Manual

9-13

Page 64

Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 3 Control Board Hardware Error Status

Status - 3 Example

Status - 4 General Warning Status

Status - 4 Example

Front

Binary Panel Hex

7 . . . 0

41 0100 0001

04 0000 0100

13 0001 0011

Meaning/Description

This status shows the hardware control circuit error condition. It shows details when Status - 0 Bit 1, Status - 1 Bit 1, and Status - 2 Bit 1 are ON.

0. Odd parity.

1. 1 = Not used.

0 = Always set to 0.

2. 1 = Not used. 0 = Always set to 0.

3. 1 = Not used. 0 = Always set to 0.

4. 1 = EEPROM check error has occurred. 0 = EEPROM is normal.

5. 1 = SRAM check error has occurred. 0 = SRAM is normal.

6. 1 = Program ROM checksum error has occurred. 0 = Program ROM is normal

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The print engine control board EEPROM is operating normally.

■ The print engine control board S-RAM is operating normally.

■ The print engine control board program ROM checksum failed.

■ There is no communication error.

This status shows the warning or test mode details when Status - 0 bit 2 is 1.

0. Odd parity.

1. 1 = Media warning. See Status-32 for details.

0 = No media waring.

2. 1 = Toner warning. See Status-31 for details. 0 = No toner warning.

3. 1 = Engine is in test mode and can’t print. See Status-17 for details. 0 = The printer is not in test mode.

4. 1 = Consumab les life w arning. Maxim um density warning occurs when the engine has toner density at maximum levels . This is an indication of a possible component failure or possible low toner condition. See Status-44 for details. 0 = No consumables life warning.

5. 1 = SRAM check error has occurred. 0 = SRAM is normal.

6. 1 = Program ROM checksum error has occurred. 0 = Program ROM is normal

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ There is no paper/media warning.

■ There is no toner warning.

■ The print engine is in a test mode state, it cannot print.

■ The printer is not in a consumables life warning mode.

■ There is no maximum density warning.

■ There is no communication error.

■ Paper/media warning mode; for example, the printer may have less then 30 sheets in

the media tray.

■ There is no toner warning.

■ The printer is not in a test state.

■ The print engine has consumables life warning information. See Status - 44 for details.

■ There is no communication error.

9-14

Phaser 550 Color Printer

Page 65

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 5 Unit Absent Error Status

Status - 5 Example

Status - 6 Pages to Resend Status

Status - 6 Example

Front

Binary Panel Hex

7 . . . 0

45 0100 0101

01 0000 0001

Meaning/Description

This status shows whether the electrophotographic process parts are installed. It shows the details when Status - 0 Bit 1 and Status - 1 Bit 6 are 1.

0. Odd parity.

1. 1 = Fuser not installed.

0 = Fuser installed.

2. 1 = Imaging unit not installed. 0 = Imaging unit installed.

3. 1 = Toner bin in paper feeder is not installed. 0 = Toner bin is in place in paper feeder.

4. 1 = Paper feeder is not in place. 0 = paper feeder is in place

5. 1 = A Toner cartridge is not installed. 0 = Toner cartridges are in place

6. 1 = The pre-transfer charger is not installed. 0 = The pre-transfer charger is in place.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The fuser is installed.

■ The imaging unit is not installed.

■ The residual toner tray in the paper feeder is installed.

■ The paper feeder is installed.

■ The toner cartridges are installed.

■ The pre-transfer charger is not installed.

■ There is no communication error.

This status shows the number of pages to be retransmitted in the event of a mis-feed or jam. It occurs when Status - 0 Bit 4 is 1.

0. Odd parity.

1. Bit 0 of binary representation of number of pages to resend.

2. Bit 1 of binary representation of number of pages to resend.

3. Bit 2 of binary representation of number of pages to resend.

4. 1 = Not used.

0 = Always set to 0.

5. 1 = Not used. 0 = Always set to 0.

6. 1 = Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ No page numbers retransmitted.

■ There is no communication error.

Checks and Adjustments

Service Manual

9-15

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Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 7 Media Feed Source Status

Status - 7 Example

Front

Binary Panel Hex

7 . . . 0

40 0100 0000

Meaning/Description

This status shows the paper pass mode and the paper source for the next print. The status is updated when the next sheet of paper is picked. This status is not linked to any other status states.

0. Odd parity.

1. 1= Use manual feed source in response to manual feed command or media in the

manual feed tray. 0 = Use tray as media source.

2. 1 = Transparency tray is selected or transparency ﬁlm is in the manual feed tray. 0 = Use paper source.

3. 1 = Not used. 0 = Always set to 0.

4. 1 = Use optional tray 2 0 = Other mode.

5. 1 = Use optional tray 1 0 = Other mode.

6. 1 = Use standard tray 0 = Other mode.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The selected tray is set as a paper source mode.

■ The printer is in paper mode.

■ There is no optional tray 2.

■ There is no optional tray 1.

■ The printer is using the standard tray mode.

■ There is no communication error.

9-16

Phaser 550 Color Printer

Page 67

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 8 Media Jam Error Status

Status - 8 Example

Status - 9 Standard T ray Type Status

Status - 9 Example

Front

Binary Panel Hex

7 . . . 0

11 0001 0001

02 0000 0010

0E 0000 1110

Meaning/Description

This status shows the paper jam condition when Status - 0 Bit 1 and Status - 1 Bit 3 are 1.

0. Odd parity.

1. 1 = P aper Jam at A has occurred. A jam occurs when paper does not reach the aligning

sensor 3.0 seconds after it is picked from the optional tray 1, or 4.1 seconds after it is picked from optional tray 2. This bit is reset by opening and closing optional tray door. 0 = No media OP jam.

2. 1 = Paper Jam at A has occurred. A jam occurs when the paper does not reach the aligning sensor within 2.8 seconds from paper pick from the standard tray or aligning sensor is active because of paper in the path during warm-up and initialization. This bit is reset by opening the then closing the paper feed system door. 0 = No media jam at A.

3. 1 = Paper Jam at B has occurred. A jam occurs when paper does not reach the fuser roller entry sensor within 2.2 seconds after the aligning sensor is released, or the fuser roller entry sensor is active (paper in the path) during warm-up and initialization. This bit is reset by opening and then closing the front door or the paper feed unit door. 0 = No media jam at B.

4. 1 = Paper Jam at C has not occurred. A jam occurs when paper does not reach the fuser roller exit sensor within 3.6 seconds after the aligning sensor is released, or the fuser roller entry sensor is active (paper in the path) during warm-up and initialization. 0 = No media jam at C.

5. 1 = Paper Jam at D has not occurred. A jam occurs when paper does not reach the exit roller sensor within 1.4 seconds (when face up) or in 2.1 seconds plus paper length seconds (when face down) after reaching the fuser roller exit sensor, or exit sensor is active (paper in the path) during warm-up and initialization. This bit is reset b y opening and then closing the paper feed door or the front door. 0 = No media jam at D.

6. 1 = P aper Jam at E has not occurred. A jam is deﬁned when paper does not clear (pass by) the exit roller sensor within the paper length seconds after reaching the exit roller sensor. This bit is reset by opening and then closing the paper eject unit door. 0 = No media jam at E.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ Media jam at fuser.

■ There is no communication error.

This status shows the standard tray size. This status is not linked to any other status states.

0. Odd parity.

1. Tray code bit B1 B5 B4 B3 B2 B1

2. Tray code bit B2 00000 = 00 = No tray installed.

3. Tray code bit B3 00001 = 11 = Letter tray installed.

4. Tray code bit B4 00010 = 22 = Legal tray installed.

5. Tray code bit B5 ... to ... 4 = A4 tray installed.

6. Not used.

0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ Letter size tray is being used.

■ There is no communication error.

■ This is not a defined state.

■ There is no communication error.

Checks and Adjustments

00110 = 65 =Trans letter installed.

6 =Trans A4 tray installed.

Service Manual

9-17

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Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 10 Optional 1 T ray Type Status

Status - 10 Example

Status - 11 Optional 2 T ray Type Status

Status - 11 Example

Status - 12 Printable Media size Status

Status - 12 Example

Front

Binary Panel Hex

7 . . . 0

25 0010 0101

01 0000 0001

Meaning/Description

This status shows the optional tray 1 size. This status is not linked to any other status states.

0. Odd parity.

1. Tray code bit B1 B5 B4 B3 B2 B1

2. Tray code bit B2 00000 = 00 = No tray installed.

3. Tray code bit B3 00001 = 11 = Letter tray installed.

4. Tray code bit B4 00010 = 22 = Legal tray installed.

5. Tray code bit B5 ... to ... 4 = A4 tray installed.

6. 1 = Lower Tray Assembly installed.

0 = No Lower Tray Assembly installed.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The Legal-size optional tray 1 is installed.

■ The optional feeder is not installed.

■ There is no communication error.

This status shows the optional tray 2 size. This status is not linked to any other status states.

0. Odd parity.

1. Tray code bit B1 B5 B4 B3 B2 B1

2. Tray code bit B2 00000 = 00 = No tray installed.

3. Tray code bit B3 00001 = 11 = Letter tray installed.

4. Tray code bit B4 00010 = 22 = Legal tray installed.

5. Tray code bit B5 ... to ... 4 = A4 tray installed.

6. Not used

0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ No optional tray 2, not installed.

■ Optional feeder is not installed.

■ There is no communication error.

This status shows the printable size of the currently selected tray and simply echoes back what was set by the D0 32 and D0 37 (set Letter- and A4-size) commands. This status is not linked to any other status states.

0. Odd parity.

1. Tray code bit B1 B5 B4 B3 B2 B1

2. Tray code bit B2 00000 = 00 = Letter-size tray.

3. Tray code bit B3 00001 = 11 = Legal-size tray.

4. Tray code bit B4 00010 = 22 = A4-size tray installed.

5. Tray code bit B5 00000 = 0remainder not used.

6. Not used.

0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The installed tray is letter size.

■ There is no communication error.

00110 = 65 =Trans letter installed.

6 =Trans A4 tray installed.

00110 = 65 =Trans letter installed.

6 =Trans A4 tray installed.

9-18

Phaser 550 Color Printer

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Table 9-2 Status code meanings (cont'd.)

Status State

Status - 14 Process Unit Error Status

Status - 14 Example

Status - 15 Process Unit Error Status

Front

Binary Panel Hex

7 . . . 0

01 0000 0001

Meaning/Description

This status shows the details of the printing process errors identiﬁed in the Status - 0 Bit 1, Status - 1 Bit 1, and Status - 2 Bit 6.

0. Odd parity.

1. 1= Toner cartridge unit movement error. Refer to Status - 25 for details.

0 = Toner cartridge movement is normal.

2. 1 = Fuser error. Refer to Status - 22 for details. 0 = No fuser error.

3. 1 = Fan motor error. Refer to Status - 16 for details. 0 = Fans are working normally.

4. 1 = Toner bin is full. See Status - 43 for details. 0 = The toner bin is not full.

5. 1 = Positioning error has occurred. Refer to Status - 24 for details. 0 = No positioning error.

6. 1 = Charger error caused by an over current condition in the power supply to the charger. 0 = No charger error.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The movement of the toner cartridges are normal.

■ The operation of the fuser is normal.

■ The operation of the fan motors is normal.

■ The waste toner bin is not full.

■ The positioning of the photoconductive belt and accumulator belt is operating normally.

■ The charger unit is operating normally.

■ There is no communication error.

This status shows paper/transparency discrepancies, manual feed jams and paper conditions in the selected trays, manual feed, or the output tray. This also relates to the detailed status of Status - 0 Bit 1, and Status - 1 Bit 4.

0. Odd parity.

1. 1= The output tray is full.

0 = The output tray is not full.

2. 1 = No media in the manual feed slot. 0 = There is media in the manual feed slot.

3. 1 = The selected tray is empty 0 = The selected tray is not empty.

4. 1 = There has been a man ual paper feed jam detected at w arm-up and initialization. A Jam is deﬁned when the aligning sensor is active (paper in the path) during warm-up and initialization. Reset by removing paper from manual feed tray. 0 = No manual feed jam was not detected at warm-up

5. 1 = The manual paper f eed has not detected a jam. A jam occurs when paper does not reach the aligning sensor within 1.5 seconds after picking paper from the manual feed tray. This bit is reset by removing paper from manual feed tray. 0 = No manual feed jam has occurred

6. 1 = Transparency is detected in the paper tray or paper has been detected in the transparency tray. 0 = Paper in paper tray or transparency in transparency tray

7. 1 = A communication error has occurred. 0 = There is no communication error.

Checks and Adjustments

Service Manual

9-19

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Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status -15 Example

Status - 16 Fan Error Status

Status - 16 Example

Status - 17 Test/ Diagnostic Error Status

Front

Binary

Meaning/Description Panel Hex

7 . . . 0

05 0000 0101 ■ The output tray is not full.

■ There is no paper in the manual feed slot.

■ There is some paper in the selected tray.

■ There has been no manual paper feed jam detected at warm-up and initialization.

■ The manual paper feed has not detected a jam.

■ Transparency has been detected in the transparency tray or paper has been detected

in the paper tray.

■ There is no communication error.

0E 0000 1110

■ The output tray is full of paper or transparency.

■ There is no paper in the manual feed slot.

■ There is no paper in the selected tray, or there is no tray in the position that is selected.

■ There has been no manual paper feed jam detected at warm-up and initialization.

■ The manual paper feed has not detected a jam.

■ Transparency has been detected in the transparency tray or paper has been detected

in the paper tray.

■ There is no communication error.

This status shows the details of the fan motor error. This also relates to the detailed

status of Status- 0 Bit 1, Status - 1 Bit 1, Status - 2 Bit 6, and Status - 14 Bit 3.

0. Odd parity.

1. 1= Ozone fan error.

0 = The ozone fan is operating normally.

2. 1 = Power supply fan error. 0 = No power supply fan error.

3. 1 = Fuser fan error. 0 = No Fuser fan error.

4. Not used 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

04 0000 0100

■ The ozone fan is operating normally.

■ The power supply fan is not operating normally.

■ The toner cartridges fan is operating normally.

■ There is no communication error.

This status shows the details of the test and diagnostic mode. This also relates to the detailed status of Status - 0 Bit 2, and Status - 4 Bit 3.

0. Odd parity.

1. 1= The print engine is stopped. The motor scanner and fuser are all off.

0 = The print engine is in another mode.

2. Not used. 0 = Always set to 0.

3. Not used 0 = Always set to 0.

4. 1 = The print engine is diagnostic mode. 0 = The print engine is in another mode.

5. 1 = The engine is performing either a single or continues media pass test. 0 = The print engine is in another mode.

6. 1 = The printer is in HHS operation mode. 0 = The print engine is in another mode.

7. 1 = A communication error has occurred. 0 = There is no communication error.

9-20

Phaser 550 Color Printer

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Table 9-2 Status code meanings (cont'd.)

Status State

Status - 17 Example

Status - 19 Toner Cartridge Error Status

Status - 19 Example

Status - 20 Motor Speed Error Status

Status - 20 Example

Front

Binary

Meaning/Description Panel Hex

7 . . . 0

10 0001 0000 ■ The print engine is in diagnostic mode.

■ Paper past test is in the other mode.

■ The HHS operation is in the other mode. <tbd - what is HHS?>

■ There is no communication error.

This status shows the details of the tone cartridges installation errors. This also relates

to the detail status of Status - 0 Bit 1, Status - 1 Bit 6, and Status - 5 Bit 5

0. Odd parity.

1. 1= No cyan toner cartridge is detected.

0 = The cyan toner cartridge is installed.

2. 1= No magenta toner cartridge is detected. 0 = The magenta toner cartridge is installed.

3. 1= No yellow toner cartridge is detected. 0 = The yellow toner cartridge is installed.

4. 1= No black toner cartridge is detected. 0 = The black toner cartridge is installed.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

01 0000 0001

■ The cyan toner cartridge is installed.

■ The magenta toner cartridge is installed.

■ The yellow toner cartridge is installed.

■ The black toner cartridge is installed.

■ There is no communication error.

This status shows the details of the possible motor errors. This also relates to the detailed status of Status - 0 Bit 1, Status - 1 Bit 1, and Status - 2 Bit 2.

0. Odd parity.

1. 1= The main motor speed is not phase-locked and therefore is not correct.

0 = The main motor speed is correct.

2. 1= The paper feed motor speed is not phase-locked and therefore is not correct. 0 = The paper feed motor speed is correct.

3. 1= The toner cartridge motor speed is not phase-locked and therefore is not correct. 0 = The toner cartridge motor speed is correct.

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

01 0000 0001

0D 0000 1101

■ The main motor’s speed is functioning normally.

■ The paper feed motor’s speed is functioning normally

■ The toner cartridge rotational motor’s speed is functioning normally.

■ There is no communication error.

■ The main motors speed is functioning normally.

■ The paper feed motor speed is not functioning normally. Its rotation is not

phase-locked.

■ The toner cartridge rotational motor speed is not functioning normally. Its rotation is not

phase-locked.

■ There is no communication error.

Checks and Adjustments

Service Manual

9-21

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Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 21 Motor Speed Error Status

Status - 21 Example

Status - 22 Fuser Error Status

Status - 22 Example

Front

Binary Panel Hex

7 . . . 0

01 0000 0001

08 0000 1000

Meaning/Description

This status shows the details of which door is open. This also relates to the detailed status of Status - 0 Bit 1, Status - 1 Bit 1, and Status - 2 Bit 4.

0. Odd parity.

1. The front door or right door is open

0 = The front or right doors are both closed.

2. 1= The left side door is open 0 = The left side door is closed

3. 1= The lower tray assembly left door is open 0 = The lower tray assembly left door is closed.

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The front and toner cartridges door is closed.

■ The standard tray side door is closed.

■ The optional tray feeder (if installed) side door is closed.

■ There is no communication error.

This status shows the details of any fuser errors. This also relates to the detailed status of Status - 0 Bit 1, Status - 1 Bit 1, Status - 2 Bit 6, and Status - 14 Bit 2.

0. Odd parity.

1. Not used.

0 = Always set to 0.

2. Not used. 0 = Always set to 0.

3. 1= A fuser thermistor open error has occurred. 0 = The fuser thermistor is not opened.

4. 1 = The fuser has exceeded its it upper limit of 205 0 = The fuser has not exceeded it high temperature limit.

5. 1 = A fuser temperature not rising error has occurred. The fuser temperature is not rising above ambient. 0 = The fuser temperature is rising.

6. 1 = A low temperature error has occurred. The fuser temperature is less than 150 during 600 dpi printing or less than 140 temperature initially rises, but then does not reach or maintain normal operating temperature in a speciﬁed amount of time 0 = The fuser low temperature error has not occurred

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ A fuser thermistor open error has not occurred.

■ A fuser high temperature condition has not occurred.

■ A fuser temperature “not increasing” has not occurred.

■ A fuser low temperature condition has not occurred.

■ There is no communication error.

■ A fuser thermistor has an open error.

■ A fuser high temperature condition has not occurred.

■ A fuser temperature “not increasing” has not occurred.

■ A fuser low temperature condition has not occurred.

■ There is no communication error.

C during 1200 dpi printing. Also it is set if the

9-22

Phaser 550 Color Printer

Page 73

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 23 Laser Scanner Error Status

Status - 23 Example

Status - 24 Position Error Status

Status - 24 Example

Front

Binary Panel Hex

7 . . . 0

20 0010 0000

01 0000 0001

Meaning/Description

This status shows the details of errors that can occur with the laser scanner. This also relates to the detailed status of Status - 0 Bit 1, Status-1 Bit 1, and Status - 2 Bit 3.

0. Odd parity.

1. Not used.

0 = Always set to 0.

2. 1 = An L-sync short error has occurred. 0 =An L-sync short error has not occurred.

3. 1= An L-sync long error has occurred. 0 = An L-sync error has occurred.

4. 1 = A laser inferiority error has occurred. 0 = Laser power is normal.

5. 1 = The laser scanner motor is not phase locked and is not rotating at the correct speed. 0 = The laser scanner motor speed is correct.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ A line sync short error has not occurred.

■ A line sync overage error has not occurred.

■ The laser output power is operating normally.

■ The laser scanning motor is not rotating at its proper speed.

■ There is no communication error.

This status shows the details of positioning errors associated with the imaging unit belts. This also relates to the detailed status of Status - 0 Bit 1, Status -1 Bit 1, and Status - 2 Bit 6

0. Odd parity.

1. 1 = The starting position of the accumulator belt cannot be found.

0 = The positioning of the accumulator belt is normal.

2. 1 = The starting position of the photoconductive belt cannot be found. 0 =The positioning of the photoconductive belt is normal.

3. 1= The movement of the photoconductive belt is asynchronous with the accumulator belt. 0 = The mov ement of the photoconductive belt is synchroniz ed with the accumulator be

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The positioning of the accumulator belt is operating normally.

■ The positioning of the photoconductive belt is operating normally.

■ The photoconductive belt and the accumulator belt are in synchronous operation.

■ There is no communication error.

Checks and Adjustments

Service Manual

9-23

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Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 25 Toner Cartridge Movement Error Status

Status - 25 Example

Status - 31 Toner Low Warning Error Status

Status - 31 Example

Front

Binary Panel Hex

7 . . . 0

2A 0010 1010

01 0000 0001

Meaning/Description

This status shows the details of toner cartridge movement errors. This also relates to the detailed status of Status - 0 Bit 1, Status - 1 Bit 1, Status - 2 Bit 6, and Status - 14 Bit 1.

0. Odd parity.

1. 1 = A cyan toner cartridge movement error has occurred.

0 = A cyan toner cartridge movement error has not occurred.

2. 1 = A magenta toner cartridge movement error has occurred. 0 = A magenta toner cartridge movement error has not occurred.

3. 1 = A yellow toner cartridge movement error has occurred. 0 = A yellow toner cartridge movement error has not occurred.

4. 1 = A black toner cartridge movement error has occurred. 0 = A black toner cartridge movement error has not occurred.

5. 1 = A paper feed roller movement error has occurred. 0 = A paper feed roller movement has not occurred.

6. 1 = A cleaning blade movement error has occurred. 0 = No cleaning blade movement error has occurred.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The cyan toner cartridge movement is not OK.

■ The magenta toner cartridge movement is OK.

■ The yellow toner cartridge movement is incorrect.

■ The black toner cartridge movement is OK.

■ The paper feed unit movement is incorrect.

■ The cleaning blade movement is OK.

■ There is no communication error.

This status shows the details of low toner in the toner cartridges. The indicated cartridge will run out of toner after another 300 to 400 prints. This also relates to the detailed status of Status - 0 Bit 2, and Status - 4 Bit 2.

0. Odd parity.

1. 1 = The cyan toner cartridge is running out of toner.

0 = The cyan toner cartridge has sufﬁcient toner.

2. 1 = The magenta toner cartridge is running out of toner. 0 = The magenta toner cartridge has sufﬁcient toner.

3. 1 = The yellow toner cartridge is running out of toner. 0 = The yellow toner cartridge has sufﬁcient toner.

4. 1 = The black toner cartridge is running out of toner. 0 = The black toner cartridge has sufﬁcient toner.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ There is sufficient cyan toner in the toner cartridge.

■ There is sufficient magenta toner in the toner cartridge.

■ There is sufficient yellow toner in the toner cartridge.

■ There is sufficient black toner in the toner cartridge.

■ There is no communication error.

9-24

Phaser 550 Color Printer

Page 75

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 32 Empty/ Absent Media Warning Error Status

Status - 32 Example

Status - 33 Empty/ Absent Media Warning Error Status

Status - 33 Example

Front

Binary Panel Hex

7 . . . 0

40 0100 0000

0D 0000 1101

Meaning/Description

This status shows the details of the warning mode concerning low paper and missing trays. Low paper refers to approximately 30 sheets, depending on the paper thickness. If the optional paper feeder is not installed, Bits 1,2,4,5, = 0. This also relates to the detailed status of Status - 0 Bit 2 and Status - 4 Bit 1.

0. Odd parity.

1. 1 = No media in the lower tray or no upper tray in the lower tray assembly.

0 = Media is installed in the lower tray of the lower tray assembly.

2. 1 = No media in the upper tray or no upper tray in the lower tray assembly. 0 = Media is installed in the upper tray of the lower tray assembly.

3. 1 = No media in the standard tray or no standard tray in engine. 0 = Media is installed in the standard tray of the engine.

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ No optional tray 2.

■ No optional tray 1.

■ Some paper in the standard tray.

■ No optional tray 2.

■ No optional tray 1.

■ There is enough paper in the standard tray.

■ There is no communication error.

This status shows the details of the warm-up ad initialization, or toner patch/gamma table details. These bits are cleared by sending a “Toner Patch Test Request” command D0 62, or at power-up, and when exiting the energy star mode (if SW301-3 on the print engine control board. These bits remain cleared during the toner patch test. This also relates to the detailed status of Status - 0 Bit 3. <tbd - are these bits deﬁned correctly???>

0. Odd parity.

1. 1 = The printer is not ﬁnished warming up.

0 = The printer is warmed up and ﬁnished initializing.

2. 1 = The gamma table data for 600 dpi is not ready to send to the image processor. 0 = The toner patch data is ready to send.

3. 1 = The gamma table data for 1200 dpi is not ready to send to the image processor. 0 = The toner patch data is ready to send.

4. 1 = Toner patch data for 1200 dpi is not ready to send to the image processor. 0 = The toner patch data is ready to send.

5. 1 = Toner patch data for 600 dpi is not ready to send to the image processor. 0 = The toner patch data is ready to send.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ No valid 600 dpi gamma table received from the image processor.

■ No valid 1200 dpi gamma table received from the image processor.

■ The printer is finished warming-up and initializing.

■ There is no communication error.

Checks and Adjustments

Service Manual

9-25

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Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 35 Empty/ Absent Media Warning Error Status

Status - 35 Example

Status - 40 Print Resolution Error Status

Status - 40 Example

Front

Binary Panel Hex

7 . . . 0

01 0000 0001

02 0000 0010

Meaning/Description

This status shows the present toner cartridge color that is in process. This status is not linked to any other status.

0. Odd parity.

1. Not used.

0 = Always set to 0.

2. 1 = The engine is developing the cyan image layer. 0 = The engine is not developing the cyan image layer.

3. 1 = The engine is developing the magenta image layer. 0 = The engine is not developing the magenta image layer.

4. 1 = The engine is developing the yellow image layer. 0 = The engine is not developing the yellow image layer.

5. 1 = The engine is developing the black image layer. 0 = The engine is not developing the black image layer.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The image is not being made/developed by the cyan cartridge.

■ The image is not being made/developed by the magenta cartridge.

■ The image is not being made/developed by the yellow cartridge.

■ The image is not being made/developed by the black cartridge.

■ There is no communication error.

This status shows the engine imaging resolution information. This status is not linked to any other status.

0. Odd parity.

1. 1 = The resolution is set to 2400 x 600 dpi.

0 = The resolution is not set to 2400 x 600 dpi.

2. 1 = The resolution is set to 2400 x 1200 dpi. 0 = The resolution is not set to 2400 x 1200 dpi.

3. Not used. 0 = Always set to 0.

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. 1 = The resolution mode command has been received and will be picked at the next print. 0 = The resolution mode command has not been received.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The resolution is 1200 dots per inch. The power-up default is 1200 dpi.

■ The 600 dots per inch mode command has not been received.

■ The 1200 dots per inch mode command has not been received.

■ There is no communication error.

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Phaser 550 Color Printer

Page 77

Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 41 Energy Start Mode (ESM) Status

Status - 41 Example

Status - 42 Engine Firmware Version Status

Status - 42 Example

Status - 43 Energy Start Mode (ESM) Status

Status - 43 01 0000 0001 This status is not used at this time, but will return zero and a parity bit if read. This also

Front

Binary Panel Hex

7 . . . 0

01 0000 0001

3D 0011 1101

Meaning/Description

This status details the energy star mode (ESM) entry. This is not linked to any other status.

0. Odd parity.

1. 1 = The engine is prepared by ESM and the image processor may now assert the

NESM signal. 0 = The print engine is preparing for the ESM in response to an ESM Entry Request command or there has been no ESM Entry Request command.

2. 1 = The engine has received a request to enter ESM from the image processor. 0 = The engine has not received a request to enter Energy Star Mode.

3. Not used. 0 = Always set to 0.

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The print engine has not received a request to enter ESM.

■ The engine is preparing to enter ESM mode.

■ There is no communication error.

This status displays the ROM version in hexadecimal. This is not linked to any other status.

0. Odd parity.

1. ROM bit B0 B5 B4 B3 B2 B1 B0

2. ROM bit B1 010011

3. ROM bit B2

4. ROM bit B3 equals 19, for example.

5. ROM bit B4

6. ROM bit B5

7. 1 = A communication error has occurred.

0 = There is no communication error.

■ Version 30

■ There is no communication error.

This status is not used at this time, but will return zero and a parity bit if read. This relates to the status of Status - 0 Bit 1, Status - 1 Bit 1, Status - 2 Bit 6 and Status -14 Bit 4.

0. Odd parity.

1. Not used.

0 = Always set to 0.

2. Not used. 0 = Always set to 0.

3. Not used. 0 = Always set to 0.

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

relates to the detailed status of Status - 0 Bit 1, Status - 1 Bit 1, Status - 2 Bit 6 and Status -14 Bit 4.

■ There is no communication error.

Service Manual

9-27

Page 78

Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 44 Life Warning Status

Status - 44 Example

Front

Binary Panel Hex

7 . . . 0

40 0100 0000

Meaning/Description

This status shows the details of the life warning mode of the customer replaceable units. The state of bits 1 through 4 are determined by unit life counters. These unit life counters are reset using the appropriate unit life counter reset command. This also relates to the detailed status of Status - 0 Bit 2, Status - 4 Bit 4.

0. Odd parity.

1. 1 = The imaging unit is reaching its end of life. This warning does not inhibit printing

but signals the beginning of continuous image degradation. The image unit life counter is incremented by one for each exposure of each color until the counter reaches 40,000, which then sets this status warning bit. 0 = The imaging unit is OK

2. 1 = The pre-transfer charger is reaching its end of life. This warning will not inhibit printing but will signal the beginning of continuous image degradation. This process units life counter is incremented by one for each image (not page) when the pre-transfer corona is enabled until the counter reaches 40,000, which then sets this status warning bit. 0 = The pre-transfer charger is OK.

3. 1 = The transfer roller is reaching its end of life. This warning will not inhibit printing, but paper jams may occur if printing continues. The second bias transfer roller unit life counter is incremented by one for each page (not image) by the PURGE signal until the counter reaches 40,000, which then sets this status warning bit. 0 = The second bias transfer roller is OK.

4. 1 = The fuser is reaching its end of life. This warning will not inhibit printing, but paper jams may and over heating will occur if printing continues. The fuser unit life counter is incremented by one for each page (not image) by the PURGE signal until counter reaches 40,000, which then sets this status warning bit. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. 1 = The imaging unit’s toner bin is full. The imaging unit must be replaced. 0 = The imaging unit’s toner bin is not full.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The existing imaging unit is OK.

■ The existing pre-transfer charger unit is OK.

■ The existing second bias transfer roller is OK.

■ The existing fuser is OK.

■ The imaging unit’s waste toner bin is full.

■ There is no communication error.

9-28

Phaser 550 Color Printer

Page 79

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 45 Eject Mode Status

Status - 45 Example

Status - 46 Maximum Density Warning Status

Status - 46 Example

Front

Binary Panel Hex

7 . . . 0

02 0000 0010

01 0000 0001

Meaning/Description

This status shows details of the paper exit mode for the next print. This status is not linked to any other status.

0. Odd parity.

1. 1 = Current e xit mode is face up. Man ually f eeding tr ansparencies always exit face up

but do not set this bit. 0 = The current exit mode is face down.

2. 1 = The f ace down mode command has been received and will be reﬂected b y the next print. 0 = The face down command has not been received.

3. 1 = The face up mode command has been received and will be reﬂected by the next print. 0 = The face up command has not been received.

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The current paper exit mode is face-up.

■ The face-down mode command has not been received.

■ The face-up mode command has not been received.

■ There is no communication error.

This status shows the details of the maximum density warning. This also relates to the detailed status of Status - 0 Bit 2 and Status - 4 Bit 5.

0. Odd parity.

1. 1 = Cyan is at maximum density

0 = Cyan is not at maximum density.

2. 1 = Magenta is at maximum density 0 = Magenta is not at maximum density.

3. 1 = Yellow is at maximum density 0 = Yellow is not at maximum density.

4. 1 = Black is at maximum density 0 = Black is not at maximum density.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ Cyan is not at maximum density.

■ Magenta is not at maximum density.

■ Yellow is not at maximum density.

■ Black is not at maximum density.

■ There is no communication error.

Checks and Adjustments

Service Manual

9-29

Page 80

Checks and Adjustments

Table 9-2 Status code meanings (cont'd.)

Status State

Status - 47 Density Control Process Status

Status - 47 Example

Front

Binary Panel Hex

7 . . . 0

02 0000 0010

Meaning/Description

This status shows the details of the density control processes. This also relates to the detailed status of Status - 0 Bit 2and Status - 4 Bit 5.

0. Odd parity.

1. 1 = The engine is in toner density sensor calibration mode.

0 = The engine is not in toner density sensor calibration mode.

2. 1 = The engine is in maximum density control mode. 0 = The engine is not in maximum density control mode.

3. 1 = The engine is in gamma calibration mode. 0 = The engine is not in gama calibration mode.

4. Not used. 0 = Always set to 0.

5. Not used. 0 = Always set to 0.

6. Not used. 0 = Always set to 0.

7. 1 = A communication error has occurred. 0 = There is no communication error.

■ The print engine is currently recalibrating its toner density sensor.

■ There is no communication error.

9-30

Phaser 550 Color Printer

Page 81

Resetting NVRAM

Resetting NVRAM returns all the image processor's NVRAM-stored parameters to their factory defaults except the print counts and the Adobe ﬁrmware serial number.

Checks and Adjustments

Caution

To reset the image processor to its factory default values, follow this procedure:

Resetting NVRAM will also reset the network card’s NVRAM. If this is not desired, remove the network card from the printer before performing the NVRAM reset.

Turn the printer off.

Press and hold the front panel Buttons 1 (Exit) and 4.

Turn the printer on.

When the front panel displays the message NVRAM Default, release Buttons 1 and 4.

At this point the message password? will be displayed. Within 10 seconds, press Buttons 1 (Exit) and 3 at the same time. The NVRAM parameters will be reset to their factory default values. If you do not press buttons 1 and 3 in the allotted time, the NVRAM will not be changed.

Service Manual

9-31

Page 82

Checks and Adjustments

Print engine calibration

Generally, no print engine calibration is required. Using its closed-loop, image density sensors, the printer can self-calibrate its color output. Usually, if you note a print defect, replacing a toner cartridge, the imaging unit or the transfer roller (or perhaps the paper feeder) corrects the problem.

Printer color correction

Correcting printer colors is accomplished either semi-automatically or manually. In either case you use front panel menus to make the corrections.

Starting printer semi-automatic color correction

Press the Menu button on the front panel to scroll to the Help Pages display.

Press the right arrow so the display reads Calibrate Colors. Press the Menu button to enter the Calibrate Colors menu.

Press the right arrow to scroll to the Auto Calibrate menu item.

Press the Menu button and then press Conﬁrm. The printer executes it auto-calibration sequence. This takes about 5 minutes.

Manually setting color corrections

Press the Menu button on the front panel to scroll to the Help Pages display.

Press the right arrow so the display reads Calibrate Colors.

Press the Menu button to enter the Calibrate Colors menu.

Press the right arrow to scroll to the Adjust each color menu item. Press Menu to enter the Adjust each color menu.

9-32

Phaser 550 Color Printer

Page 83

Checks and Adjustments

Press Print to print a reference print showing the printer’s current selections for each primary color. The currently selected colors are oriented through the midline of the page with the alternate choices extended above and below them.

Color Calibration Page

Cyan Magenta Yellow Black

-6

+10

-9

-7

-5

-3

-1

-4

-2

+10

-9

-7

-5

-3

-1

9317-53

Figure 9-4 Manual color correction reference print

Overlay and compare the pre-printed primary colors on the Phaser 550 Quick Reference Card to the selected colors on the midline of the print.

If any primary color does not match, overlay and compare to an alternate color. Note the number, -10 to +10, referenced to the alternate choice.

Press the right arrow on the front panel to scroll to the Adjust

color

Press the arrow keys to increment the displayed value (from

>:+0 menu for the primary color you wish to change.

-10 to +10) to match the alternate color selected from the reference print. Then press OK. An “*” indicates the selected value.

Repeat Step 6 through 8 for any other color that needs adjustment.

10.

Press Exit to leave the Color Calibration menus.

Service Manual

9-33

Page 84

Checking print registration

A simple way to determine if the printer is properly registering (overlaying) the layers of toner is to print and examine the Startup Page.

Press the Menu button.

With the Help pages menu displayed, scroll to the Startup Page item. Press Print.

Examine the four six-color pies at the bottom of the print. You should see no white areas bordering the black lines separating the color slices. If you do, the printing is misregistered and the imaging unit should be replaced. Also clean the accumulator belt home position sensor.

TekColor Corrections

None Vivid Color Display Press Match

TekColor Corrections

None Vivid Color Display Press Match

Figure 9-5 Checking the registration of the toner layers

No white next to black printing  good resgistration

White seen next to blackprinting poor registration 

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Page 85

Chapter

FRU Disassembly/Assembly

This chapter explains how to remove and replace many of the printer's Field Replaceable Units (FRUs). This chapter covers procedures for FRUs that are difﬁcult to remove or require special handling or precautions. Refer to Appendix A for a list of the printer's FRUs.

Required tools

■

Magnetic tip screwdrivers; 3-inch shaft and 6-inch shaft:

■

#1 POSIDRIV

Needle-nose pliers

Diagonal cutters



tip — extended shank

■

Flat-blade screwdriver

95% isopropyl alcohol

■

Replacement cable ties 343-0549-00

■

Antistatic mat 006-7056-00

■

Test pattern generator 067-1433-00

■

Tweezers 003-0236-00

■

115 VAC toner vacuum 003-1496-00

■

220 VAC toner vacuum 003-1497-00

■

Toner ﬁlters for vacuum 003-1498-00

Imaging unit cover 006-1623-00

■

Spring removal tool 003-7971-00

Conductive grease 006-7998-00

■

Gear grease 006-7436-00

Service Manual

8-1

Page 86

FRU Disassembly/Assembly

The printer cabinet

Upper rear cover

Remove the six screws securing the upper rear cover in place.

Lower rear cover

Remove the four screws securing the lower rear cover in place.

Top cover

Remove the upper rear cover ﬁrst.

Remove the three screws securing the rear of the top cover in place.

The front of the top cover is held by metal tabs. Tilt the cover up from the rear, slide it back slightly and remove.

Left door (for paper feeder access)

Open the left door.

Unhook the retaining strap from the door.

Unpin the two hinge spring arms (black plastic). Each is located at the ends of the door.

Unpin the door from the engine frame. Unpin the rear of the door ﬁrst.

Left side cover

Lower the manual feed tray.

Remove the four screws securing the left side cover to the print engine. Tilt forward and remove the cover.

8-2

Manual feed tray

Tilt the tray up slightly and squeeze the tray’s retaining pins inward to free it from the print engine frame.

Phaser 550 Color Printer

Page 87

Upper rear cover

FRU Disassembly/Assembly

Top cover

Lower rear cover

Figure 8-1 Removing cabinet covers

EMI shields

Initial printers feature many metal plates and shields. Later models may have fewer or no shields. Use a magnetic screwdriver when removing the many screws securing EMI shields in place to avoid losing the screws in the printer. Note the placement of the shields and the routing of all cables prior to removing them.

Left side cover

Manual feed tray

Left door

9013-27

EMI shielding on the printer may change as the printer is reﬁned.

Service Manual

8-3

Page 88

FRU Disassembly/Assembly

Front door

Open the front door.

Remove the two screws securing each door hinge to the front door.

Upper and lower front covers

Remove the top cover. Remove the imaging unit. Cover the imaging

unit to protect its photconductive belt from light.

Remove the four screws securing the front covers.

Disconnect the front panel board’s wiring harness.

To separate the lower front cover from the upper front cover, remove the two screws securing them together.

Bottom front cover

Open the front door.

Remove the three screws securing the bottom front cover in place.

Tilt the cover forward and remove it.

Front panel board

Remove the top cover. Remove the imaging unit. Cover the imaging unit to protect its photconductive belt from light.

Remove the four screws securing the front covers.

Disconnect the front panel board’s wiring harness.

Remove the four screws securing the front panel to the inside of the upper front cover.

Toner level sensor board

Remove the top cover. Remove the imaging unit. Cover the imaging unit to protect its photconductive belt from light.

8-4

Remove the three screws securing the toner level sensor board in place.

Disconnect the sensor board’s wiring harness. Remove the sensor.

Phaser 550 Color Printer

Page 89

Right side covers (front, rear and lower)

Remove the front and rear right side covers before removing the right side lower cover.

Remove the paper tray.

Remove the two screws securing each of the three right side cover in place. Remove the covers. Note that the lower side cover clips underneath the printer frame.

Toner level sensor board

FRU Disassembly/Assembly

Figure 8-2 Removing cabinet covers

Upper and lower front cover

Front door

Bottom front cover

Right side covers

Rear

Front

Lower

9013-28

Service Manual

8-5

Page 90

FRU Disassembly/Assembly

Paper feeder

Turn off the printer.

Open the left side door to access the paper feeder. Slide out the paper feeder.

With a screwdriver, back out the slide rail stop screws. There is one screw at the end of each slide rail.

Slide the paper feeder off the rails.

Paper tray sensor board

Remove the paper feeder as explained in the previous procedure.

Remove the paper tray.

Disconnect the wiring harness leading to the paper tray sensor board.

8-6

Phaser 550 Color Printer

Page 91

FRU Disassembly/Assembly

Remove the two screws securing the sensor board to the printer. (Lift the paper empty sensor ﬂag out of the way while you lift the paper tray sensor board out.)

Paper tray sensor board

Paper feeder

Back-out stop screws

Figure 8-3 Removing the paper feeder and the paper tray sensor board

9013-29

Service Manual

8-7

Page 92

FRU Disassembly/Assembly

Cartridge selector/eject unit (right door)

Remove the right-side covers as explained in the earlier topic, “Right side covers (front, rear and lower)” on page 8-5.

Disconnect the cartridge selector/eject unit’s wiring harness.

Remove the E-ring and bushing from each end of the cartridge selector/eject unit. Remove the third E-ring from the cartridge selector/eject unit’s shaft.

Unlatch the cartridge selector/eject unit and lower it half-way down to relieve spring pressure. Remove the shaft and then remove the cartridge selector/eject unit.

Remove E-ring

Remove E-ring and  bushing from each end of the cartridge selector/eject unit

Figure 8-4 Removing the cartridge selector/eject unit

Cartridge selector/ eject unit (right door)

Disconnect wiring harness

9013-30

8-8

Phaser 550 Color Printer

Page 93

Laser scanner

Note

FRU Disassembly/Assembly

Remove the top cover as explained in the earlier topic, “Top cover” on page 8-2.

Disconnect the four wiring harnesses connected to the laser scanner.

Remove the three screws securing the laser scanner in place. Lift and remove the laser scanner.

Cover the laser window slot leading to the imaging unit to protect the photoconductive belt from room light.

Remove three screws

Laser scanner

Disconnect wiring harnesses

Figure 8-5 Removing the laser scanner

9322-87

Service Manual

8-9

Page 94

FRU Disassembly/Assembly

Laser motor drive board

Remove the top cover as explained in the earlier topic, “Top cover” on page 8-2.

Disconnect the two wiring harnesses connected to the laser motor drive board.

Remove the four screws securing the laser motor drive board. Lift and remove the laser motor drive board.

Remove screw

Disconnect the two wiring harnesses

Remove three push pins

8-10

9322-6

Figure 8-6 Removing the laser modulation board

Phaser 550 Color Printer

Page 95

Power supply

FRU Disassembly/Assembly

Remove the upper and lower rear covers and the rear right side cover as explained in the earlier topic, “The printer cabinet” on page 8-2.

Disconnect the wiring harnesses connected to the power supply.

Remove the four screws securing the power supply in place. Lift and remove the power supply.

Caution

Reassembly Note: The bottom of the power supply features two slots that engage tabs in the printer frame for reassembly. At the rear base of the power supply, be sure to route the AC wiring harness through the top of the grommet and out the bottom before engaging the power supply’s assembly slots to the frame tabs. Failure to properly route the AC wiring harness can pinch the wiring and short AC power to the printer frame.

Fuser installed switch

Remove the upper and lower rear covers as explained in the earlier topic, “The printer cabinet” on page 8-2.

Remove the power supply as explained in the previous procedure.

Locate the fuser-installed switch located on the underside of the printer’s fuser fan housing. Disconnect the switch’s wiring harness.

Remove the screw securing the switch to the fan housing. Remove the switch.

Service Manual

8-11

Page 96

FRU Disassembly/Assembly

Remove the four screws

Power supply



Power supply frame tabs

For reassembly: Route AC wiring harness through top of grommet

AC wiring harness

Figure 8-7 Removing the power supply and the fuser installed switch

Disconnect the wiring harnesses

9013-33

8-12

Phaser 550 Color Printer

Page 97

Power supply fuse

FRU Disassembly/Assembly

Caution

To avoid damaging the printer, only replace the power supply fuse with a fuse of the same type and rating.

Remove the power supply as explained in the previous procedure, “Power supply” on page 8-11.

Remove the power supply’s cover. It is secured in place with 10 screws (one of the screws secures the power supply fan).

Locate the fuse near the bottom of the power supply by the power cord receptacle.

Fuse

Figure 8-8 Replacing the power supply fuse

9013-34

Service Manual

8-13

Page 98

FRU Disassembly/Assembly

Printer rear assemblies

Note

Engine control board

Note

If you are removing the engine control board or the engine driver board to access an assembly underneath, it is appropriate to disconnect the board’s wiring harnesses and then remove the board and its mounting bracket as an assembly.

Remove the upper rear cover as explained in the earlier procedure, “Upper rear cover” on page 8-2.

Disconnect the wiring harnesses leading to the engine control board.

Remove the four screws securing the board in place. Remove the engine control board by pulling it straight out, unplugging it from the engine driver board. (Upon reassembly, securely tighten the screws.)

To remove the engine control board bracket, remove the four screws securing the bracket in place.

Swap NVRAM IC2. This IC stores print engine parameters the needed gamma correction. Also, when adjusting gamma, and correction does not product a noticeable change then it is possible that the NVRAM is damaged.

Engine driver board

Note

Connectors CN15 and CN10 have no corresponding plugs. These two connectors are for development purposes only.

Remove the upper rear cover as explained in the earlier procedure, “Upper rear cover” on page 8-2.

Remove the engine control board and bracket as explained in the previous procedure.

Disconnect the wiring harnesses leading to the engine driver board.

Remove the ﬁve screws securing the board in place. Remove the engine driver board. (Upon reassembly, securely tighten the screws.)

To remove the engine driver board bracket, remove the four screws securing the bracket in place.

When installing a new board ensure that DIP Switch SW301, switch four (4) is in the up position, and that all other switches are down. This allows the print engine to read the Gamma Correction Density from the print engine control board NVRAM (IC2).

8-14

Phaser 550 Color Printer

Page 99

Charger sensor board

FRU Disassembly/Assembly

Remove the upper rear cover as explained in the earlier procedure, “Upper rear cover” on page 8-2.

Remove the engine control board as explained in the previous procedure, “Engine control board” on page 8-14.

Disconnect the wiring harnesses leading to the charger sensor board.

Remove the two screws securing the board in place. Remove the charger sensor board.

Charger sensor board

Engine control board bracket

Engine control board

Engine driver board

Engine driver board bracket

Figure 8-9 Removing the engine control, engine driver and charger sensor boards

9013-35

Service Manual

8-15

Page 100

FRU Disassembly/Assembly

Main motor

Paper feed motor

Remove the upper and lower rear covers and the left side cover as explained in the earlier procedure, “The printer cabinet” on page 8-2.

Remove the engine control board and bracket as explained in the previous procedure, “Engine control board” on page 8-14.

Remove the engine driver board and bracket as explained in the earlier topic, “Engine driver board” on page 8-14.

Disconnect the motor’s wiring harness.

Remove the four screws holding the main motor in place. Remove the motor.

Remove the upper and lower rear covers and the left side cover as explained in the earlier procedure, “The printer cabinet” on page 8-2.

Cleaning board

Remove the power supply as explained in the earlier topic, “Power supply” on page 8-11.

Remove the engine control board and bracket as explained in the previous procedure, “Engine control board” on page 8-14.

Remove the engine driver board and bracket as explained in the earlier topic, “Engine driver board” on page 8-14.

Remove the four screws holding the paper feed motor in place. Remove the motor.

Remove the upper and lower rear covers and the left side cover as explained in the earlier procedure, “The printer cabinet” on page 8-2.

Remove the engine control board and bracket as explained in the previous procedure, “Engine control board” on page 8-14.

Remove the engine driver board as explained in the earlier topic, “Engine driver board” on page 8-14.

8-16

Disconnect the cleaning board’s wiring harness.

Remove the three screws securing the cleaning board in place. Remove the cleaning board.

If necessary, to remove the cleaning board bracket, remove the two screws securing the bracket in place.

Phaser 550 Color Printer

Xerox 550 Service manual

General Information

The Phaser 550 Color Printer

RAM and printer capabilities

Print engine assemblies

Front panel

Rear panel

Network card LEDs

Test print button

Health LED

Media tray type sensing

Test Pattern Generator

Wiring Diagram

Contents

Test Prints

Index

Checks and Adjustments

Required tools

Front panel menu

Printing test prints

Print service test prints

Printing the demonstration pages

Printing the print engine’s test print

Image processor normal indicators

Image processor hard and soft error indicators

Printer self-diagnostics

Service mode status code meanings

Resetting NVRAM

Print engine calibration

Printer color correction

Starting printer semi-automatic color correction

Manually setting color corrections

Checking print registration

FRU Disassembly/Assembly

Required tools

The printer cabinet

Upper rear cover

Lower rear cover

Top cover

Left door (for paper feeder access)

Left side cover

Manual feed tray

Front door

Upper and lower front covers

Bottom front cover

Front panel board

Toner level sensor board

Right side covers (front, rear and lower)

Paper feeder

Paper tray sensor board

Cartridge selector/eject unit (right door)

Laser scanner

Laser motor drive board

Power supply

Fuser installed switch

Power supply fuse

Printer rear assemblies

Engine control board

Engine driver board

Charger sensor board

Main motor

Paper feed motor

Cleaning board