Samsung SCX-4521F Series Service Manual page 103

Troubleshooting
6.5.14 Stains on Back of Page
• Description The back of the page is stained at 47 mm intervals.
Digital
Digital Pri
Digital Printer
Digital Printer
Digital Printer
6.5.15 Blank Page Print out (1)
• Description Blank page is printed.
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
6.5.16 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.
Service Manual
6-22
Check and Cause
1. Transfer roller is contaminated.
2. Pressure roller is contaminated.
Check and Cause
Bad ground contacts in OPC and/or devel-
oper.
Check and Cause
1. Bad ground contacts in OPC and/or
developer.
2. Abnormal solenoid.
Solution
1. Perform the DRUM Cleaning Mode Print 2
or 3 times. Run Self-Test to remove the con-
tamination of the transfer roller.
2. Replace the transfer roller if contaminated
severely.
3. Disassemble the fuser and clean the
H/R(Heat Roller) and P/R(Pressure roller).
And check the area between H/R and
Thermistor. If contaminated, clean the area
not to be deformed.
Solution
Remove contamination of the terminals of the
developer and the unit.
Solution
1. Remove contamination of the terminals of
the developer.
2. Perform the engine self test using Engine Test
Mode to check if the Solenoid is normal.(refer
to code 06)
3. If not solved by the above directions 1-2,
Replace the engine board.
4. Turn the power off, delete the data of PC
and try printing again.
Samsung Electronics