Read Sony DPP-EX50 Service Manual online
4-6
DPP-EX50 V1
(Screen 4-3)
4-4. Mechanical Troubleshooting
The troubles caused by a mechanical deck can be mainly classified into the following.
1.
Any paper cannot be fed normally. (Paper feed/eject trouble)
2.
Any ink ribbon cannot be fed normally. (Ribbon trouble)
3.
Printing cannot be performed normally. (Print trouble)
The cause and remedy of each trouble are described below.
1. Paper feed/eject trouble
Trouble:
. No paper is ejected from the paper feed tray.
. Paper is ejected from the paper feed tray, but it stops halfway.
. Paper is ejected from the paper feed tray, but it stops halfway.
Cause:
Perform the mode transition operation in “Mechanic Test” (refer to Section 3-7.) in the
service mode and confirm whether the UP plate operation is normal.
Normal:
Normal:
The chassis assembly is abnormal.
Abnormal: The paper feed block (K (paper feed) frame assembly) is abnormal.
Remedy:
. Clean (wipe with dry cloth) if the paper feed roller and separation roller are dirty due to an
abnormal paper feed block.
. Replace the K (paper feed) frame assembly if the paper feed roller and separation roller are
not dirty.
. Replace the chassis assembly if it is abnormal (the mode gear is damaged).
Trouble:
. Paper is fed normally, but it is ejected as blank paper.
. Multiple sheets of paper are fed continuously. (Multiple paper feed)
. Multiple sheets of paper are fed continuously. (Multiple paper feed)
Cause:
Incorrect paper detection.
Remedy:
. Confirm the fixing state of the PE-46 and JD-46 boards. Replace the PE-46 and JD-46
boards if the state is normal.
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