JRC JMR-92 Series Field Service Manual page 638

Step 3 Change the operation circuit B: CCK-1059.
Disconnect the FPC that connects between the CCK-1059 and the keyboard. FPC can be
released by sliding the actuator of J641 horizontally.
Remove the screws (M3: 16 locations) that fasten the CCK-1059 and change it. After replacing
the operation circuit B, assemble to the original condition by repeating the same procedure in the
reverse order. Please make sure to tighten all the screws and connect all the cables back in place.
When mounting the operation circuit B, fit it into the guide hole. Be sure to place the key rubber
in the correct position as it is easy to be displaced.
Exercise caution when handling the FPC as it is very fragile.
When installing the FPC, be careful not to insert them slanted or bend them.
Guide hole
Guide hole
CCK-1059
J641
FPC
4-417
Guide hole
Chapter 4 Replacement procedure