COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)B. Guide to Test Prints for the Printer UnitThe printer unit contains the test print patterns (horizontal lines) of four colors (yellow,magenta, cyan, and black) shown in Figure 10-202. Generate test prints if a problemoccurs in the printer unit to find out its cause.To generate a test print without a printer board, turn on the power while holding downthe Test Print switch. Then, press the switch when the printer unit has entered standbystate.To generate a test print with the printer board installed, turn on the power, and pressthe switch when the machine has entered standby state.Do not turn on the power while holding down the switch if the printer board is installed.The display panel will indicate “Service Call,” and the printer unit will enter an error state.Be sure to turn on the power as normally done if the printer board is installed.If the display panel indicates “Service call,” turn off and then on the power effort gen-erating a test print.When generating test prints, the machine uses the cassette 2. Make sure that thecassette 2 contains paper before pressing the switch.Figure 1-201CHAPTER 10 TROUBLESHOOTING10-12Test print switchDownload free service manual at http://printer1.blogspot.com
