5-3
5.3
Diagnostic flowcharts
Use the flowcharts that follow to determine the exact problem when either the online or offline diagnostics
indicate a group error. Refer to Chapter 4 for parts replacement.
5.3.1
Group 1 error flowchart (Lamp assembly)
This flowchart applies when the Ready and the Paper Jam LED each blinks 6 times the same while, with the
scanner offline.
Yes No
5.3.2
Group 2 error flowchart (Flatbed/ADF motor)
This flowchart applies when the offline diagnostics error indication is the simultaneous blinking 5 times of the
Ready and Paper Jam LED.
Group 1 Error
CCD error
Replace optical
assembly
Lamp is on?
Inverter error
Replace lamp
inverter circuit
Lamp is on?
Replace the lamp
End of test
Yes
No
Group 2 error
Flatbed
motor
moves?
Flatbed motor error
Replace flatbed
motor
ADF/Flatbed home
position sensor error
Replace home
position sensor
No
Yes