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6. Daily Maintenance and Periodic Inspection and Maintenance
6.3 Replacement Methods
III-48
(2) Expansion PCB
The expansion PCB is used to expand the system for adding a serial port, etc. (Refer to the "I Connection
Manual, Section 2.2" in the Connection and Maintenance Manual BNP-B2183 for information related to
expansion PCB types and functions.)
Up to two expansion PCBs can be added. The PCBs are mounted in the RT #1/#2 slots on the right side
of the control section power supply PCB.
(a) Replacement procedures
Always replace the expansion PCB with the machine power turned OFF.
1) Confirm that the machine power is OFF. (If the power is not OFF, turn it OFF.)
2) Open the electric cabinet door, and confirm that the control unit LED, 7-segment display, etc., are all
OFF.
3) Disconnect all cables connected to the control unit and expansion PCB.
4) Open the front cover of the control section as shown in the drawing below.
5) While holding the front upper and lower sections of the expansion PCB with both hands, pull out the
PCB from the control section.
6) Replace with the new expansion PCB. If the PCB has setting locations, set to the same settings as
the old PCB.
7) Install the expansion PCB into the slot in which the old PCB was mounted.
(Align the expansion PCB with the PCB fixing guides on the inner side of the control section case,
and then install.)
8) Close the front cover of the control section.
9) Connect all cables that were connected to the control unit and expansion PCB.
(Connect all cables to the designated connectors.)
10) Close the door of the electric cabinet.
Expansion PCB mounting slot
Open the front cover
of the control section.
Front cover
Control section case
Expansion PCB
PCB fixing guides
Control section case
Expansion PCB
Control section
Incorrect connections may damage the devices, so connect the cables to the specified
connectors.
Do not replace the expansion PCB while the power is ON.
Do not connect or disconnect the connection cables between each unit while the power
is ON.
CAUTION