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9.2 Configuration of internal device
This device has internal devices; "display unit", "power supply board", "input board", and "output board" as
shown in Fig. 9.4.
The display unit is configured with LCD module and CPU board. Power supply and input board are configured by
connector connection.
Input board and output board are connected to CPU board with each connector.
Input board and output board have terminal block connected to external.
(1) Unscrew four continuous-thread studs on rear
surface of main unit.
9.3 Removal of inner assembly
The internal board is removed by disconnecting this assembly from the installation panel.
CAUTION: Do not fail to remove the inner asseembiy after turning OFF the power supply to this device.
Fig.9.5
Fig.9.6
(2) Remove the front frame and pull out display unit, power
supply/input board, and output board collectively.
Fig. 9.4 Configuration of internal devices
Enclosure
Front frame/enclosure
installation screw
(x4)
Output board
Power supply board
Display unit
LCD module /
CPU board
Input board
Front frame/enclosure
installation screw
(x4)
Remove the front frame
Pull out LCD
module/CPU
board, and a set of
internal devices