Internal PM-48V-INT or PM-40V-INT line power module installation
120
SmartNode 1000 and 2000 Series Getting Started Guide
8 • Line power module installation
Note
The 12V and the 40V line power modules are very similar in appear-
ance. The 40V module is labeled ZWS30-36 on the large electrolytic
capacitor (see
figure 82
).
If you look at the exposed SN2400 chassis, you will see the motherboard and the 12V power module that is
already installed (see
figure 82
). (The figure shows the general arrangement of the chassis-mounted compo-
nents only, with little or no component details.). To the right of the existing 12V power module are two screw
holes tapped into dimples, and two smaller holes. These four holes are for mounting the 40V line power mod-
ule (see
figure 81
on page 118).
Follow the steps below to mount a 40V internal line power module.
1. Remove the 40V line power module from its packing. Verify that the side of the largest electrolytic capaci-
tor has the label ZWS30-36.
2. Position the plastic insulating foil over the four mounting holes in the SmartNode 2400 chassis.
3. Insert the plastic mounting studs into the line power module, one into each of the two corner holes that
are on the opposite side to the finned heat sinks (see
figure 82
on page 119). Insert them from below.
4. Position the line power module so that the studs pass through the holes in the plastic foil and engage in the
two chassis holes that are nearest to the front (LED) side of the SmartNode. Press down gently to secure.
5. From above, insert the screws into the module, one into each of the two holes at the corners of the heat-
sink side. Screw them home so that the screws pass through the foil and secure the module onto the Smart-
Node chassis dimples. See the lower graphic in
figure 81
on page 118.
6. First insert the white 4-lead 40V supply cable in the line power module’s socket. Then connect it to the
40V socket on the motherboard. The plug is polarized so you cannot insert the sockets the wrong way
round. See
figure 81
on page 118.
7. Take the mains lead and insert the plug into the motherboard socket. This is adjacent to the 230V external
power socket. Insert the other end in the line power module’s socket. All plugs are polarized so that they
cannot be inserted the wrong way round. Clip the cable to the side of the chassis.
Go to section
“Completing the installation”
.
Completing the installation
When you have installed the 48V (or 40V) line power module and set the jumper pins, do the following:
1. Install the interface card in its expansion slot (see chapter 9,
“Interface card installation”
on page 122).
2. Close the case and insert the mains power supply lead.
3. Insert the network cables and observe the LED indications (see chapter 11,
“Monitoring Status”
on
page 132). Test the correct functioning of the connections.
The maximum total power consumption of all ISDN devices connected to internally powered S0 ports is lim-
ited to 30W. If your connected devices need more power, switch off the internal power connection for some
Connecting the 40V line power supply to the 12V socket instead of the 40V
socket may result in permanent damage to the main board.
CAUTION
