JRC JMR-92 Series Field Service Manual page 640

4.3.6.3 Replacing the Keyboard: CCK-1061
[Required Tools]
The tools shown in the following table are required for replacement work.
No. Name
1 Phillips screwdriver
Before conducting replacement work, turn OFF the circuit breaker for the power supply of the
display unit.
Do not lose the screws as they will be needed again.
Step 1 Remove the screws of the KOPU and take out.
Remove the screws (M4: 4 locations) inside the four screw covers at the top and bottom of the
KOPU, and take out the KOPU from the mounting frame. For details, please refer to the
"Replacing the Keyboard Operation Unit: KOPU NCE-5625."
Step 2 Change the keyboard: CCK-1061.
Disconnect the FPC that connects between the operation circuit B and the keyboard: CCK-1061.
FPC can be released by sliding the actuator of J641 horizontally.
Remove the screws (M3: 13 locations) that fasten the CCK-1061 and change it.
After replacing the CCK-1061, 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 new keyboard, be careful so that the waterproof packing dos not get into
the inside of the keyboard.
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.
Table Required Tools
Size
Size #2
4-419
Appearance
Chapter 4 Replacement procedure