Citizen CL-S321 Series - Page 25

CL-S321 Series Service Manual
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Unscrew and take out 3 screws on the bottom
cover.
Lift up the bottom cover gently from the cut-out portion by
using a flat-head screw driver.
The main board is held by two points with the
body frame. One with a hole and one hook.
Pull up the main board.
Unplug all cables from the main PCB.
Unscrew and take off the ESD cable.
Hooks