Ricoh Aficio 1515 Service Manual page 89

9 March 2004
No.
Definition
145 D Automatic SBU adjustment error
The white levels of the white plate and
the white paper are extraordinarily
different during the Scan Auto
Adjustment (☛SP4-428-001).
193 B Image transfer error
Scanned images are not transferred to
the controller memory within one
minute.
198 B Memory address error
The BICU does not receive the memory
address report from the controller within
one minute.
302 B Charge roller current leak
The polling module detects a current
leak of the charge roller.
320 B Polygonal mirror motor error
The polygon mirror motor does not
reach the operating speed within 10
seconds. Or, the polygon mirror motor
remains out of the operating speed for
0.2 second after reaching the operating
speed.
321 B No laser writing signal (F-GATE) error
The poling module does not detect the
laser writing signal (F-GATE) asserting
after the laser crosses 5 mm from the
start point on the drum surface.
322 B Laser synchronization error
The main scan synchronization
detector does not detect the laser
signal for 0.5 second.
390 B TD sensor error
The BICU detects the TD sensor
outputting extraordinary voltage (less
than 0.2 V or more than 4.0 V) 10 times
consecutively.
Symptom
4-3
SERVICE CALL CONDITIONS
Possible Cause
• Defective exposure lamp
• Unclean white plate
• Incorrect position or width of white
plate scanning (☛ SP4-015)
• Defective BICU board
• Defective SBU board
• Defective BICU board
• Defective controller board
• Inconsistency between the BICU
firmware and the controller firmware
• Defective BICU
• Defective controller
• Defective charge roller
• Defective high voltage supply board
• Loose connection of the PCU
• Defective polygon mirror motor
• Loose connection between the
polygonal mirror motor and the BICU
• Defective cable between the BICU
and the polygon mirror motor
• Defective BICU
• Defective BICU
• Loose connection on the fax controller
or the printer controller
• Defective fax controller or printer
controller
• Toner bottle not installed
• Loose connection between the LD
unit and the BICU
• Defective cable between the BICU
and LD unit
• LD unit out of position
• Defective LD unit
• Defective BICU
• Defective TD sensor
• Loose connection of the PCU