Diagnostic Self Test

The diagnostic test contains a skew test, a print cartridge test, and a left/right registration test and displays selected printer information. The skew test is particularly useful, but the print cartridge information in not as extensive as the extended diagnostic or final test.

To print the diagnostic self-test:

1 With the printer on, press and hold the Power button.

2 Press the Resume button 5 times.

3 Release the Power button.

The printer will print out the diagnostic self-test page shown on the next page.

Print Skew Test, Upper Apple Color StyleWriter 6500 Diagnostic Test

'fM Printer Information

Model: Color StyleWriter 6500 C5922A3652

Revision: 1.2 12/J1/96

ID: X 0x1S2001 CM* OxSecl

Cartridge Status; OK

Flash: Mo io connection! no connection

Prim Cartridge

Nozzle Patterns

— Banding Test Left/Right Registration Test

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Print Skew Test, Lower

Figure: Diagnostic Self-Test Page

Interpreting the Diagnostic Test

All interpretations refer to the Diagnostic Self-Test Page shown on the preceding page. Printer Information

  • Model: The model name indicates the model of the printer (such as the Color StyleWriter 6500) and the model number provides the part number of the printer.
  • Revision: Revision notes the firmware version installed.
  • ID: Printer identification number.
  • Cartridge Status: Indicates the status of the print cartridge.
  • Flash: Indicates whether PCA programmable part are included
  • I/O Connection: I/O identifies printer port status.

Interpreting the Diagnostic Test (Continued) Print Cartridge

  • Nozzle Patterns: The black and colored nozzle test patterns verify that dots on each print cartridge are firing correctly. If dots are missing, refer to the "Print Quality" section in Troubleshooting.
  • Banding Test: If the nozzle test passes, the dark patches of the banding test should be relatively smooth and uniform. Horizontal bands of lighter and darker areas indicate line feed errors from drag, worn mechanical parts, or cartridge errors.
  • Left/Right Registration Test: The left/right registration test measures the printer's ability to print a smooth vertical line. Half of the line is printed while the carriage moves to the left, the other half, while the carriage moves to the right. The line should be straight without gaps; otherwise, the encoder strip, carriage motor, drive belt, paper motor, or main logic board could be damaged.
  • Print Skew Test: The print skew test measures the print margins to ensure the paper moves through the printer properly and printing does not appear tiltled.
Figure: Print Skew Test Page

Print Skew Test

The Print Skew test measures the print margins to ensure that paper moves through the printer properly and printing does not appear tilted. To test for print skew:

1 Print the Diagnostic Self-Test page.

2 Fold the top edge of the page down towards the bottom, aligning the left edge of the paper without creasing the paper.

Note where the vertical line left of the A falls in relation to the two vertical lines to the left of the C.

  • If the single vertical line falls between the two vertical lines, the print skew is within product specification.
  • If these lines do not match up, print skew is out of specification. See "Print Skew" in Troubleshooting.

I ffij Additional Procedures Extended Diagnostic Test

The extended diagnostic test show detailed information on the print cartridges and also prints out the contents of the Non-Volatile Memory (NVM). The top section of the test will show if any nozzles are out. Random nozzle outs are due to the print cartridge; cleaning will often clear them (see Print Head Cleaning Procedure in this section). The NVM contains information such as page count, pen count, xy settings, and last error trap. The test prints this information in hexadecimal format.

To print the Extended Diagnostic Test page:

1 With the printer on, press and hold the Power button.

2 Press the Resume button 12 times.

3 Release the Power button.

The printer will print out the Extended Diagnostic Test page shown on the next page.

Apple Color StyleWriler 65(10 Friended Diagnostic Tot o

Prim Cartridge

Nozzle Patterns

Printer Information

Color StyleWriter €500 C5922A3652 1,2 12/31/96

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Figure: Extended Diagnostic Test Page

Interpreting the Extended Diagnostic Test

All interpretations refer to the Extended Diagnostic Test Page shown on the preceding page.

Print Cartridge

• Nozzle Patterns: Check the black and color nozzle patterns for any poor print quality. The top section of the test will show if any nozzles, primitive (blocks), or addresses (ladders) are out. Check the "stair-step" patterns for missing dots (gaps in the diagonal lines).

Check each primitive and address to determine whether or not any addresses or primitives are missing. A missing primitive (seen as a box missing in the pattern) or a missing address (seen as a missing column of horizontal lines) will cause 12 to 22 nozzles to drop out.

Missing nozzles can be caused by bad print cartridges, incorrectly installed print cartridges, mis-aligned purge units, a bad mechanical assembly. First try cleaning the cartridges. If that does not solve the problem, try replacing the flexible ribbon cable, or the mechanical assembly.

Interpreting the Extended Diagnostic Test (continued)

Printer Information

• NVM: The Non-Volatile Memory (NVM) works in tandem with the purge unit and allows the printer to keep track of numerous operations. This information is held in memory, even when the printer is shut off. The NVM contains information such as page count, pen count, xy settings, and last error trap. The Extended Diagnostic Test prints out this information in hexadecimal format. To read the NVM grid on the Extended Diagnostic refer to "Interpreting the NVM Grid" in this chapter

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