B – Toner Density Too High; C – Toner Density Too Low - Printronix L5000 Series Maintenance Manual

2B – Toner Density Too High / 2C – Toner Density Too Low
1. Verify the toner density setting in the configuration menu. Through the printer
control panel, select the Printer Control menu, Toner option. Ensure that the toner
density setting is "2".
NOTE: If you change the density, it takes about 30 pages for the new setting to
2. Check the I/O board.
a. Remove J26 from CN26 on the I/O board.
b. Rotate VR11 completely clockwise, and verify that the voltage on pin 2 of
c. Turn the potentiometer completely counterclockwise, and verify that the
If voltages are not normal, replace the I/O board. Otherwise, continue checking
the I/O board.
d. Connect pin 2 and pin 6 of CN22 together.
e. Rotate VR11 clockwise, and verify that LED2 (green) is illuminated and
f.
If LED's are not normal, replace the I/O board.
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CHECKLIST: CONFIGURATION MENU
I/O BOARD
DEVELOPING UNIT
TONER SUPPLY CLUTCH
TONER DENSITY SENSOR
become effective.
CN26 is about 12V.
voltage reads 0V.
LED1 (red) is not illuminated (off).
Rotate VR11 counterclockwise, and verify that LED2 (green) is not
illuminated (off) and LED1 (red) is illuminated.
Troubleshooting