Diagnostic information
2-119
Print quality—banding
Service tip: Banding is difficult to detect, except on a page with a uniform gray or a large amount of graphics
printed on the page. Banding is primarily due to a variation in the speed of the paper as it feeds through the
printer, especially in the development and transfer process. Inspect the alignment assembly, main drive
assembly, and all other paper feed components for signs of wear, dirt, binds, or damage, especially the drive
gears. Banding appears as light or dark horizontal lines on a uniformly gray page.
Banding can also be caused by a defective charge roll brush contact or HVPS. Check the charge roll contact for
damage and for proper connection to the HVPS and print cartridge.
4
System board HVPS
connector
Check the following voltages at J15 on the system board. Measure
the voltages from J15 to printer ground.
If J15-1 voltage is incorrect, check the continuity of the front harness
cable (J15-1 line). If there is no continuity, replace the harness cable.
If there is continuity, replace the HVPS. If this does not correct the
problem, replace the system board.
If J15-2 voltage is incorrect or if the voltage remains at 0 V dc, check
the continuity of the front harness cable (J15-2 line). If there is no
continuity, replace the harness cable. If there is continuity, replace the
HVPS. If this does not correct the problem, replace the system board.
If J15-4 voltage is incorrect, check the front harness cable (J15-3
line). If there is not continuity, replace the harness cable. If correct,
replace the system board. If this does not correct the problem,
replace the HVPS.
FRU
Action
Pin J15
Voltage (approximate)
Printer idle
J15-1
0 V dc
J15-2
+4 V dc
J15-4
0 V dc
Printer printing
J15-1
0 V dc to +5 V dc
J15-2
0 V dc to +4 V dc
J15-4
0 V dc to +1.9 V dc
Summary of Contents for e-STUDIO500P
Page 1: ...PRINTER P N 12G9609 e STUDIO500P ...
Page 10: ...x Service Manual ...
Page 15: ...Laser notices xv Japanese Laser Notice ...
Page 16: ...xvi Service Manual Korean Laser Notice ...
Page 43: ...Diagnostic information 2 7 ...
Page 159: ...Diagnostic information 2 123 ...
Page 160: ...2 124 Service Manual ...
Page 161: ...Diagnostic information 2 125 ...
Page 181: ...Diagnostic aids 3 17 ...
Page 297: ...5 12 Service Manual ...
Page 298: ...Connector locations and connections 5 13 ...
Page 299: ...5 14 Service Manual ...
Page 301: ...6 2 Service Manual ...
Page 303: ...7 2 Service Manual Assembly 1 Covers ...
Page 305: ...7 4 Service Manual Assembly 2 Frame 1 ...
Page 307: ...7 6 Service Manual Assembly 3 Frame 2 ...
Page 309: ...7 8 Service Manual Assembly 4 Frame 3 ...
Page 311: ...7 10 Service Manual Assembly 5 Printhead ...
Page 313: ...7 12 Service Manual Assembly 6 Paper feed autocompensator ...
Page 315: ...7 14 Service Manual 4061 xx0 Assembly 7 Paper feed multipurpose feeder ...
Page 317: ...7 16 Service Manual Assembly 8 Paper feed alignment ...
Page 319: ...Page 7 19 has been removed from this document intentionally 7 18 Service Manual ...
Page 320: ...7 20 Service Manual Assembly 10 Integrated 500 sheet paper tray ...
Page 322: ...7 22 Service Manual Assembly 11 Drives Main drive and developer drive ...
Page 324: ...7 24 Service Manual Assembly 12 Hot roll fuser ...
Page 326: ...7 26 Service Manual Assembly 13 Transfer charging ...
Page 328: ...7 28 Service Manual Assembly 14 Electronics power supplies ...
Page 330: ...7 30 Service Manual Note ...
Page 332: ...7 32 Service Manual Assembly 16 Electronics shields ...
Page 336: ...7 36 Service Manual Assembly 19 Cabling diagrams 3 ...
Page 338: ...7 38 Service Manual Assembly 20 Cabling diagrams 4 ...
Page 340: ...7 40 Service Manual Assembly 21 Cabling diagrams 5 ...
Page 342: ...7 42 S ervice Manual THE FOLLOWING PAGE 7 43 HAS BEEN OMITTED FROM THIS MANUAL INTENTIONALLY ...
Page 347: ...7 48 S ervice Manual Pages 7 49 through 7 57 of this manual have been omitted intentionally ...
Page 348: ...7 58 Service Manual Assembly 35 High capacity feeder 1 ...
Page 350: ...7 60 Service Manual Assembly 36 High capacity feeder 2 ...
Page 354: ...7 64 S ervice Manual Pages 7 65 thru 7 70 ofthis manual were omitted intentionally ...
Page 362: ...I 8 Service Manual ...
Page 370: ...I 16 Service Manual ...