Toshiba manual FC-22 Troubleshooting

<Check by the gradation pattern>

16.While pressing [0] and [5] simultaneously, turn the power ON. 17.Input [4] with digital key and press [SETTINGS].

18.Check the output gradation images for gamma adjustment if there is any abnormality in yellow, magenta, cyan and black.

– If there are any abnormalities –

1Check if the drum and transfer belt are rotating. If not, correct any mechanical prob- lems.

2Check if the transfer belt unit is set fully upward.

3Check if the transfer belt unit is set fully inside.

4Check the surface of the transfer belt for any abnormal stain, large scar or tear.

5Check if the connector of the transfer transformer is disconnected.

6Check if the high-voltage harness of the main high-voltage transformer/transfer is disconnected.

7Check the harness between the LGC board and the transfer transformer if it is open-

circuited.

8Check the high-voltage contact of the transfer belt unit if it is contacting properly or if it is not dirty.

9Check if the high-voltage harness is disconnected.

0Check if the connector J113, J114 or J118 on the LGC board is disconnected.

!¡ Check if the connector J166 or J168 on the IMC board is disconnected.

!™ Check if the harness between the LGC board and the color registration sensor is open-circuited.

!£ Check if the color registration sensor connector is disconnected.

!¢ Check if the main high-voltage transformer connector is disconnected.

!∞ Check if the harness between the LGC board and the main high-voltage transformer is open-circuited.

!§ Replace the transfer transformer.

!¶ Replace the main high-voltage transformer.

19.Check the sensor detection area of the transfer belt for any damage, and if damaged, replace the transfer belt.

20.Check the light receiving area of the color registration sensor if it is not dirty.

*Be sure to do the following after having made checks and corrections:

1.While pressing [0] and [8] simultaneously, turn ON the power.

2.Enter [742] with digital keys and press the [START] key.

3.Set the color registration control setting to [0] (automatic).

4.Enter [743] with digital keys and press the [START] key.

5.Set the color registration control for warming-up setting to [1] (enabled).

6.Turn OFF the power.

January 2000 © TOSHIBA TEC 4 - 51 FC-22 TROUBLESHOOTING