Canon imageCLASS X LBP1238 II Service Manual page 142

Follow the procedure shown below to output the test print.
1. Select the following service mode.
TESTMODE > PRINT > PG-TYPE
2. Enter the PG number using the numeric keypad, and press the [Apply] key.
NOTE:
If necessary, change the settings for test print in the following service mode.
If the settings are not changed, a test print will be executed with the initial values of service mode settings.
• Setting of the number of output sheets:
TESTMODE > PRINT > COUNT
• Setting of 1-sided/2-sided printing:
TESTMODE > PRINT > PHASE
• Setting of the image formation method:
TESTMODE > PRINT > MODE
• Setting of the image correction table:
TESTMODE > PRINT > THRU
• Adjustment of test print density:
TESTMODE > PRINT > DENS
• Setting of toner thinning process:
TESTMODE > PRINT > MABK
• Setting of the paper source used when outputting a test print:
TESTMODE > PRINT > FEED
3. Execute the following service mode to output a test print.
TESTMODE > PRINT > START
■ How to use the test print
● Grid Pattern (TYPE = 0)
Check item
Right Angle/ Check that lines in horizontal/vertical scanning directions are
Straight Lines paralleled to the paper.
Check that these lines are at right angle to one another.
Magnification Ra- Check that the grid is printed at 9.99 mm intervals. (Check the
tion image on the second side at duplex printing.)
Checking method
132
Assumed cause
Failure of feed system
Failure of Laser Scanner Unit
Failure of roller's feed system
Failure of Photosensitive Drum
Failure of Laser Scanner Unit
7. Troubleshooting