SC173: Lamp regulator adjustment error
- Definition - [B]
When performing the AGC with the lamp voltage at 72 V, the CCD output
does not exceed 1 V.
- Possible causes -
If the exposure lamp lights during AGC
• White plate on the exposure glass not properly positioned
• Dirty white plate, reflectors, mirrors, or lens
• Poor connection between lamp regulator and scanner drive board
(CN105) or between scanner control board and scanner drive board
(CN101)
• Exposure lamp deteriorated
• CCD board defective
• Scanner or mirrors not properly positioned
• Lamp regulator defective or poor connection (CN3)
• Scanner control board defective or poor connection (CN106)
If the exposure lamp does not light during AGC
• Poor connection between lamp regulator and scanner drive board
(CN105) or between scanner control board and scanner drive board
(CN101)
• No ac input to lamp regulator (CN1)
→
AC drive board or main power
relay defective
• Lamp regulator defective or poor connection (CN3)
• Scanner control board defective or poor connection (CN106)
SC174: Scanner DA2* abnormal
- Definition - [B]
When performing the AGC, DA2* is not in the proper range.
- Possible causes -
•
Poor connection between CCD board and scanner control board
•
Scanner control board defective
•
CCD board defective
Trouble -
shooting
SM 6-5 A172/A199
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