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June 2005 © TOSHIBA TEC e-STUDIO281c/351c/451c TROUBLESHOOTING
5 - 69
5
5.1.17 Image control related service call
(1) Based on the procedure of [CE10], [CE20] and [CE40] described below, check the status and
take appropriate actions. And then perform the forced performing of image quality closed-loop
control according to the following procedure.
(2) After confirming the items in (1), clear the abnormal detection counter of image quality control.
[CE10] Image quality sensor abnormality (OFF level)
1. While pressing [0] and [5] simultaneously, turn ON the power.
2. Key in [395], and then press the [START] button. Confirm that the image quality control
has finished normally.
1. While pressing [0] and [8] simultaneously, turn ON the power.
2. Key in [573], and then press the [START] button.
3. Rewrite the displayed status counter from "1" - "16" to "0", and then press the [ENTER]
or [INTERRUPT] button.
4. Key in [574], and then press the [START] button.
5. Rewrite the displayed status counter from "1" - "16" to "0", and then press the [ENTER]
or [INTERRUPT] button.
6. Key in [575], and then press the [START] button.
7. Rewrite the displayed status counter from "1" - "16" to "0", and then press the [ENTER]
or [INTERRUPT] button.
8. Key in [576], and then press the [START] button.
9. Rewrite the displayed status counter from "1" - "16" to "0", and then press the [ENTER]
or [INTERRUPT] button.
Is the connector of the image quality sensor, or the connector CN338 on the LGC board dis-
connected?
Is the harness between the LGC board and the image quality sensor, or the harness between
the LGC board and the switching power supply open circuited?
È
YESÆ Connect the connector securely. Replace the harness.
NO
Is the output voltage from the 12V-power supply normal?
È
NO Æ Check the power supply system and replace the switching power supply.
YES
1) Replace the image quality sensor.
2) Replace the LGC board.