Service manual

Section - V Repair or Replacement BT3000 PLUS Rev. 0, Soft Ver. 8 Page 19 sur 22

All of the connections to the external peripheral devices are located on the rear of

the box as follows:

1 USB Port for the Printer

1 Serial-Port for Host Computer

1 Serial-Port for Modem

1 USB Port for UPS

2 PS/2 ports for Keyboard & Mouse

The ASUS main-board with a 2.4 GHz Intel Pentium

IV processor, 128 Mb RAM,

CD-ROM player, 20 Gb hard disk, floppy disk drive, and the power supply are all

located inside the computer box. Product enhancement resulting from new

innovations in technology and from our continuing quality improvement effort may

necessitate changes in this configuration in the future. However, any eventual

changes will be fully compatible with the previous version. A connecting cable

composed of lead conductors of the serial port and the 5-Volt supply

interconnects the computer box and the process electronics.

5-5.1. REPAIR AND REPLACEMENT OF THE COMPUTER BOX

First, remove the 2 mounting screws on the rear to access the internal parts of the

module. Now, it is possible to open the box from right to left so that the rear of the

box is exposed to the service engineer. One can observe the DVD player, floppy

disk drive, and the hard disk inside the lower opening on the rear of the box.

The following different operations are required for the removal and Replacement

of each particular device:

1) Hard Disk: Remove the mounting screws on the supporting bracket and dislodge

the hard disk driver.

2) DVD & Floppy Disk

: Unscrew the appropriate screws on the underside of the box

and remove the DVD or floppy-disk drivers. It is also necessary to remove the

plastic front panel of the LCD display module.

3) Main-board and Peripheral Devices

: The main-board (motherboard) is secured to

an "L" shaped metallic bracket. Remove the 4 mounting screws on the rear and

extract the slide. With this operation, it is possible to access the main-board and

all the peripheral devices.

4) TFT-LCD Display Panel

: Remove the plastic front panel. Unscrew the 4

screws on the corners, securing the display, and remove the LCD display panel.

5) Power Supply

: The power supply of the computer is located in the upper

section of the box. To remove the power supply, it is necessary to extract the

supporting bracket of the main-board and then remove the 4 screws securing the

omega shaped metallic bracket.