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February 2002 © TOSHIBA TEC 4 - 59 FC-210/310 TROUBLESHOOTING
Voltage before forced performing of color registration control
DC 0.7V Normal
DC 0V Check if the harness between the LGC board and the color
registration sensor or the harness between the LGC board and the
IMC board is open- or short-circuited.
Check if any of the connectors (J182 on the IMC board, J113 and
J114 on the LGC board) or the color registration sensor connector
is disconnected.
If there is no abnormality, check the color registration sensor.
DC 5V Check if the harness between the LGC board and the color
registration sensor is open- or short-circuited. Check if any of the
the connectors (J113 and J114 on the LGC board) or the color
registration sensor connector is disconnected.
DC 4.4V Check if the harness between the LGC board and the color
registration sensor or the harness between the LGC board and the
IMC board is open- or short-circuited.
Check if any of the connectors (J182 on the IMC board, J113 and
J114 on the LGC board) or the color registration sensor connector
is disconnected.
If there is no abnormality, check the color registration sensor.
Voltage during forced performing of color registration control
Normally DC 4.4V.
Instantaneously
may drop down to
0.7V DC
Normally DC 0.7V
Normally DC 4.4V
Check if there is any charge abnormality or exposure errors onto
the photoconductive drum (errors in the laser optical unit). Follow
the next check item 13. and after.
Reading error of color registration test pattern. Follow the next check
item 13. and after.