Sharp GX20 Service Manual - Page 44

Procedures of white defect correction

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GX20 5. Procedures of white defect correction CONFIDENTIAL 1. Attach the battery pack and then connect the Data cable. 2. Access the normal mode by holding down the "End/Power" key. 3. Send the [AT+XDIAG] command to receive the response [DIAGREADY]. 4. "Function Mode *GX20*"is shown on the display. 5. Cover the camera front to block off light completely. 6. Transmit the [WHC00840120000000] command. 7. Response will be received if the transmission is completed after 20 to 30 seconds. Be sure to continue to block off light during this process. • In case of [LDDEVPRMOK]: aaaabbb will be received. aaaa: the number of white defects bbb: the maximum level of dark current • In case of [LDDEVPRMNG]: 000000 will be received. This indicates light was not blocked completely. Go back to step 6. 8. Send the [WH] command. 9. After receiving th response [OK], send the [POWDOWN] command. 10.Power off and then remove the Data cable. * White defect correction White defects indicate pixel defects in the image detected by the light sensor. These appear as white spots even when light is completely blocked off (even on a black background). White defect correction solves this problem. 2 - 38

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GX20
2 – 38
CONFIDENTIAL
5. Procedures of white defect correction
1.
Attach the battery pack and then connect the Data cable.
2.
Access the normal mode by holding down the “End/Power” key.
3.
Send the [AT+XDIAG] command
to receive the response [DIAGREADY].
4.
"Function Mode *GX20*"is shown on the display.
5.
Cover the camera front to block off light completely.
6.
Transmit the [WHC00840120000000] command.
7.
Response will be received if the transmission is completed after 20 to 30 seconds. Be sure to continue to block off light during this process.
<Response to be received>
•
In case of [LDDEVPRMOK]: aaaabbb will be received.
aaaa: the number of white defects
bbb: the maximum level of dark current
•
In case of [LDDEVPRMNG]: 000000 will be received.
This indicates light was not blocked completely. Go back to step 6.
8.
Send the [WH] command.
9.
After receiving th response [OK], send the [POWDOWN] command.
10.Power off and then remove the Data cable.
*
White defect correction
White defects indicate pixel defects in the image detected by the light sensor. These appear as white spots even when light is completely blocked
off (even on a black background). White defect correction solves this problem.