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Service manual LIMAX
120
Service manual version 1.00
page 20
4.5
PCB stack
The PCB stack is composed of the basis board (7,
Fig. 4.3), the CPU board (6) and the CFL converter board (12). The basis board is responsible
for the conversion of signal towards the CPU board and other components. It hosts the rotary
switch connectors (1,
Fig. 4.3), the power supply unit connectors (2 and 8), the front foil connector (3), the
emergency stop connector (10) and the gas flow controller connector (9). The CPU board
contains two central processor units operating security and controlling tasks. A graphic
controller operates the graphical output signals The CPU board contains a 3V battery (4) and
the CFL converter connector (5). The CFL-converter board is mounted onto the basis board and
connected to the TFT-display (11).
Fig. 4.3 PCB stack
1
rotary switch connectors
7 basis board
2
power supply unit connector
8 power supply unit connectors
3
front foil connector
9 gas flow controller connector
4
3V battery
10 emergency switch connector
5
CFL converter connector
11 TFT-display connector
6
CPU board
12 CFL converter board