Printronix P9000 Series, User'S Reference Manual

Page: 184 / 334

Routine Service & Diagnostics 8-6
4. To select one of the 8 INCH WIDTH or FULL WIDTH paper tests, press MENU DOWN
then repeatedly press NEXT or PREV until the appropriate test is displayed. Tests inĆ
clude shift recycle, all Es, and others.
5. Press RUN/STOP to begin the selected self-test; press RUN/STOP again to stop it.
NOTE: Any data remaining in the buffer will be printed before the self-test begins.
Examine the print quality. The characters should be horizontally and vertically aligned and corĆ
rectly formed. If print quality problems exist, contact your authorized service representative.
6. Press CLEAR to place the printer off line. The display will read OFFLINE READY.
7. Close printer cover and place the printer on line.
Fault Messages
Fault messages and their explanations are listed in Table 8-1. Fault messages indicate the naĆ
ture and location of user- and service-correctable faults. After correcting a user-correctable
fault, press CLEAR to resume printer operation.
Service correctable faults are indicated on the message display by an asterisk (*) next to the
fault message. If a fault message appears, first press the CLEAR switch. If the printer returns to
OFFLINE READY after a few seconds, the fault message was a false indication, and printing
may be continued. If a fault occurs during a paper slew, the paper motion will complete for all
faults. If the fault message re-appears after pressing CLEAR, turn the printer off and contact
your authorized service representative.
Hex Code Printout
The hex code printout (often called a hex dump") are useful for debugging when
troubleshooting printer data reception problems. Hex dumps list ASCII character data reĆ
ceived from the host with the corresponding two-digit hexadecimal code. Printable characters
print their assigned symbol; nonprintable characters are indicated with a period symbol. A p"
before the hex code indicates an active Paper Instruction (PI) line; a blank space before the hex
code indicates an inactive PI line. To print the data stream received from the host computer in
hex code with ASCII character equivalents, perform the following steps.
1. Place the printer off line and raise the printer cover.
2. Press MENU DOWN; repeatedly press NEXT or PREV until DIAGNOSTICS is disĆ
played.
3. Press MENU DOWN, then repeatedly press NEXT or PREV until the PRINT DATA
STREAM IN HEX CODE message is displayed.
4. Press MENU DOWN; the display will show OFFLINE HEX DUMP.
5. Press ON LINE. The display will indicate that the printer is on line and in hex dump mode.