JRC JMR-92 Series Field Service Manual page 633

4.3.5.6 Replacing the Operation Circuit CN: CCK-1070
[Required Tools]
The tools shown in the following table are required for replacement work.
No. Name
1 Phillips screwdriver
2 Diagonal pliers
3 Cable-tie *1
*1 A number of cable-ties may be required.
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.
To prevent damage to the Unit during the replacement work, cut off cable-ties that fasten the
cable of the unit beforehand.
Step 1 Remove the screws of the TOPU and take out.
Remove the screws (M4: 2 locations) inside the two screw covers at the bottom right and left of
the trackball, and take out the TOPU from the mounting frame. For details, please refer to the
"Replacing the TOPU: NCE-5605."
Step 2 Remove the front panel of the TOPU.
Remove the screws (M3: 6 locations) on the rear of the TOPU and take out the front panel. For
details, please refer to the " Replacing the Trackball: CCK-1060."
Step 3 Remove the operation circuit A.
Remove the screws (M3: 12 locations) that fasten the operation circuit A. Remove the J617 and
the J631, and change the operation circuit A. For details, please refer to the "Replacing the
Operation Circuit A: CCK-1050"
Chapter 4 Replacement procedure
Table Required Tools
Size
Size #2
－
－
4-412
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