Toshiba e-STUDIO556 Service Manual page 645

e-STUDIO557/657/757/857
Proced
Check item
ure
1 Is the exposure lamp lit?
(Output check: 03-267)
2 Shading correction plate
Mirror
Carriage
Exposure lamp
DRV board
Lens unit
SYS board
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Result
Yes It is lit.
No It is not lit.
1. Check if there is any scratch or stain on the shading correction plate.
2. Check if there is any scratch or dirt on the original glass.
1. Check if the mirror is tilted.
- Check that the lens is reflected in the mirror looking at carriage-1 from
the upper position.
- Check that the mirror is secured at the leaf spring.
Note:
Do not turn the mirror adjustment screw more than necessary.
1. Check if the carriage is tilted by moving it to the left stopping point.
2. Check if the wire fixing screw is loosened.
3. Check if the movement of the carriage is unstable due to
disengagement of the carriage roller.
1. Check if the exposure lamp is flickering when it is turned on.
2. Check if the harness is connected properly to the exposure lamp
connector.
3. When the carriage is driven, check if the harness interferes with it or
parts are caught in it.
1. Check if the connector of the DRV board is connected properly.
2. Check if the mounted parts on the DRV board are damaged or
abnormal.
3. Replace the DRV board.
1. Check if the connector of the CCD board is connected properly.
2. Check if the CCD board is installed properly. (Check that the lens unit
is not tilted or the screw is securely tighten.)
3. Replace the Lens unit.
1. Check if the connector of the SYS board is connected properly.
2. Check if the mounted parts on the SYS board are damaged or
abnormal.
3. Check if 10 V is output from the power supply for CCD.
4. Replace the SYS board.
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Measures
e-STUDIO556/656/756/856/557/657/757/857
ERROR CODE AND TROUBLESHOOTING
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step
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