Ⅳ．replace Mainboard - Zonerich AB-58C Maintenance Manual

Ⅳ．Replace mainboard
Step 1: Remove the two screws for the
communication interface and remove
the communication interface board
according to the direction of the arrow
(serial interface, parallel interface
need to be removed)
Step 3: Remove the base according to
the direction of the arrow.
Step 5: Remove the four screws on the
mainboard.
Step 2: Remove the two screws at the
base.
Step 4: Remove the three connecting
lines on the main board.
Step 6: remove the mainboard according
to the direction of the arrow. If it is not
easy to remove, remove the power
switch first.
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