Scanning System Related Service Call - Toshiba e-STUDIO 2555C Service Manual

8.3.15

Scanning system related service call

[C260] Peak detection error
Classification
Scanning system related service
call
Proce
Check item
dure
1 Does the exposure lamp
light? (Perform the output
check: 03-267)
2 Shading correction plate
Mirror
Exposure lamp
CCD board / Lens unit
SYS board
3 SYS board
Exposure lamp
Power supply harness
e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
Peak detection error
Result
Yes It is lit.
No It is not lit.
Check if there is any scratch or stain on the
shading correction plate.
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.
1. Check if the exposure lamp is correctly lit.
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 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.)
1. Check if the connector of the SYS board
(CN122, CN126) 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. (CN122-1pin).
1. Check if the supply cable is connected
properly to the connector (CN127).
2. Check if the mounted parts on the SYS
board are damaged or abnormal.
1. Check if the harness of the exposure lamp
is connected to the LED light source
properly.
2. Check if the exposure lamp is scratched or
damaged.
3. Check if the exposure lamp harness comes
off the board.
1. Check if wiring of the power supply harness
(CN127) is abnormal.
2. Check if the harness is scratched or open
circuited.
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