Samsung ML-2250/XBG Service Manual page 80

7.1.14 Stains on Back of Page
• Description The back of the page is stained at 47 mm intervals.
Digital
1. Transfer roller is contaminated.
Digital Pri
Digital Printer
Digital Printer
2. Pressure roller is contaminated.
Digital Printer
7.1.15 Blank Page Print out (1)
• Description Blank page is printed.
Digital Printer
Bad ground contacts in OPC and/or toner
Digital Printer
cartridge.
Digital Printer
Digital Printer
Digital Printer
7.1.16 Blank Page Print out (2)
1. Blank page is printed.
2. One or several blank pages are printed.
• Description
3. When the printer turns on, several blank pages print.
1. Bad ground contacts in OPC and/or toner
2. Abnormal solenoid.
Samsung Electronics
Check and Cause
Check and Cause
Check and Cause
cartridge.
Solution
1. Perform the OPC Cleaning Mode Print 2 or
3 times. Run Self-Test to remove the
contamination from the transfer roller.
Note. Replace the transfer roller if contami-
nated severely.
2. Disassemble the fuser and clean the
H/R(Heat Roller) and P/R(Pressure roller).
Check and clean the area between the
H/R and the Thermistor. (Caution: Take
care not to deform the rollers.)
Solution
1. Check if the Ground-OPC or the OPC
Ground Zener diode are defective or open
circuit. (set inside left side).
2. Remove contamination of the terminals on
the toner cartridge and the unit.
Solution
Try turning the power off, deleting any print
jobs in the PC print queue and then try print-
ing again.
1. See 7.1.15 above
2. Perform the engine self test using DCU
(refer to code 6) to check if the Solenoid is
normal. If the problem persists replace the
engine PBA
Troubleshooting
Service Manual
7-7