Toshiba e-STUDIO520 Service Handbook page 446

[CBC0] Alignment motor abnormality
Is the alignment plate home position sensor (PI5S) working normally?
NO
YES
Is the alignment motor (M5S) operating at the fixed timing?
YES
NO
Is the alignment plate drive mechanism normal?
NO
YES
Is the problem solved by replacing the alignment motor (M5S)?
NO
YES
END
[CBD0] Guide motor abnormality
Is the guide home position sensor (PI13S) working normally?
NO
YES
Is the guide motor (M3S) operating at the fixed timing?
YES
NO
Is the guide plate drive mechanism normal?
NO
YES
Is the problem solved by replacing the guide motor (M3S)?
NO
YES
END
e-STUDIO520/523/600/603/720/723/850/853
TROUBLESHOOTING
Replace the sensor.
Replace the saddle stitcher controller PC board.
Fix the mechanism.
Replace the saddle stitcher controller PC board.
Replace the sensor.
Replace the saddle stitcher controller PC board.
Fix the mechanism.
Replace the saddle stitcher controller PC board.
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