FC-22 TROUBLESHOOTING 4 - 48 January 2000 © TOSHIBA TEC
CE5 Temperature/humidity sensor upper-limit abnormal
Is the harness between the LGC board and the temperature/humidity sensor disconnected ?
Is the LGC board connector J112 or the temperature/humidity sensor connector disconnected ?
Reconnect the connector. Replace the harness.
1. Replace the temperature/humidity sensor.
2. Replace the LGC board.
CF1 Color registration control abnormal
<Check of the status of color registration sensor error>
1. While pressing [0] and [5] simultaneously, turn the power ON.
2. Input [461] with digital keys and press [START].
3. The four values of the color registration control result are displayed (Y(0), M(1), C(2), K(3)).
4. Check the value for Y(0) displayed in 3.
When [CF1] is generated, a value from 1 to 15 is displayed (normal if 0 or 16 or above).
1-14: Data error (color registration sensor is normal)
15: Reading error of color registration test pattern
<Disabling the color registration control>
5. While pressing [0] and [8] simultaneously, turn the power ON.
6. Input [742] with digital keys and press [START].
7. Set the color registration control setting to [1](manual).
8. Input [743] with digital keys and press [START].
9. Set the color registration control for warming-up to [0](disabled).
10.Turn the power OFF.
<Check by color registration control forced performing>
11.While pressing [0] and [5] simultaneously, turn the power ON.
12.Input [407] with digital keys and press [START]. This will result in forced performing of color
registration control.
* At this time, use a digital tester to monitor the test point TP91 (front color registration
sensor output) and TP93 (rear color registration sensor output) on the LGC board.
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