April, 2007
SERVICE CALL CONDITIONS
4-31
Laser Synchronization Detector Error 1: K Leading Edge: LD0
SC220 D
While the polygon motor is
rotating normally, no
synchronizing detection signal is
output for LD0 black, or leading
edge, even after the laser diode
has been firing for 2 sec.
•
Harness between the laser synchronizing
detector and I/F unit is disconnected,
defective
•
Laser synchronizing detector defective
•
Beam not reflected in photo detection
•
GAVD (ASIC) on the BICU is defective
•
LD driver board defective
•
LDB defective
•
BICU defective
•
Check board connections, replace
Laser Synchronization Detector Error 2: K Leading Edge (Other than LD0)
SC221 D
While the polygon motor is
rotating normally, no
synchronizing detection signal is
output for black, leading edge for
any LD other than LD0, even
after the laser diode has been
firing for 2 sec.
•
Beam not reflected in photo detection
•
GAVD (ASIC) (ASIC) on the BICU
defective
•
LD driver defective
•
LDB defective
•
BICU defective
•
Check board connections, replace
Laser Synchronization Detector Error 1: Y Leading Edge: LD0
SC222 D
While the polygon motor is
rotating normally, no
synchronizing detection signal is
output for LD0 yellow, leading
edge, even after the laser diode
has been firing for 2 sec.
•
Harness between the laser synchronizing
detector and I/F unit is disconnected,
defective
•
Laser synchronizing detector defective
•
Beam not reflected in photo detection
•
GAVD (ASIC) (ASIC) on the BICU
defective
•
LD driver board defective
•
LDB defective
•
BICU defective
•
Check board connections, replace
Laser Synchronization Detector Error 2: Y Leading Edge (Other than LD0)
SC223 D
While the polygon motor is
rotating normally, no
synchronizing detection signal is
output for yellow, leading
edgefor any LD other than LD0,
even after the laser diode has
been firing for 2 sec.
•
Beam not reflected in photo detection
•
GAVD (ASIC) (ASIC) on the BICU
defective
•
LD driver defective
•
LDB defective
•
BICU defective
•
Check board connections, replace
Summary of Contents for e-STUDIO 4500c
Page 722: ...BOARDS August 2006 6 6 6 2 BOARDS 6 2 1 BLOCK DIAGRAM B132D981 WMF ...
Page 871: ...A3 11 x17 PAPER SIZE TRAY Machine Code B331 06 09 ...
Page 873: ......
Page 878: ...LCT LARGE CAPACITY TRAY Machine Code B473 06 09 ...
Page 880: ......
Page 896: ...PAPER END DETECTION September 2006 B473 16 06 09 ...
Page 897: ...Peripherals 2000 3000 SHEET FINISHER Machine Code B700 B701 ...
Page 901: ......
Page 972: ...COVER INTERPOSER TRAY Machine Code B704 06 09 ...
Page 988: ...3000 SHEET FINISHER Machine Code B706 06 09 ...
Page 991: ......
Page 1048: ...9 BIN MAILBOX Machine Code B762 06 09 ...
Page 1050: ......
Page 1062: ...PAPER MISFEED DETECTION TIMING September 2006 B762 12 06 09 ...
Page 1096: ...e STUDIO4500c 5500c POINT TO POINT DIAGRAM 1 4 ...
Page 1097: ...e STUDIO4500c 5500c POINT TO POINT DIAGRAM 2 4 ...
Page 1098: ...e STUDIO4500c 5500c POINT TO POINT DIAGRAM 3 4 ...
Page 1099: ...e STUDIO4500c 5500c POINT TO POINT DIAGRAM 4 4 ...
Page 1103: ......
Page 1104: ......
Page 1105: ......
Page 1106: ......
Page 1119: ......
Page 1120: ......