Panasonic SJ-MR220 Service Manual page 8

- For reassembly after operation checks or replacement, reverse the
respective procedures. Special reassembly procedures are
described only when required.
- After replacing the main components (optical pickup or traverse
motor, etc.) of mechanism unit block, change to the adjust mode,
and then perform the "ROM/RAM auto-adjustment".
5.1. Checking for the main P.C.B.
- Check the main P.C.B. (A side) as shown below.
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