3.4 PCB INSTALLATION
PCB Handling & General Installation
All boards should not be installed or removed while power applied.
Power must be turned off prior to insertion or removal of the PCB.
The system PCBs contain digital circuitry which can be damaged by exposure to excessive static electricity. When handling PCBs, a grounded wrist strap should be used to protect the boards from static discharges. Also, use common sense when handling the PCBs. For example, do not place a PCB in locations where heavy objects might fall on the PCB and damage components.
To insert a PCB, hold the PCB and, with component side facing right, insert the card into the MBU’s din connector firmly and tighten. To remove a PCB, reverse the procedure. Installation method of PCB is shown in Figure 3.4.1.
Figure 3.4.1 PCB Installation
There are 6 slots in the
To summarize, see the following table 3.4.1.
Slot No. | Cards | Remark | |
|
|
| |
SLOT1 | DVIB, DVIBE | Fixed slot for DVIB | |
SLOT2 | LCOB2, LCOB, LCOBE, | Option board for LCO, ISDN | |
SLOT3 | LCOBA, LCOB4,STIB2, STIB | ||
| |||
SLOT4 | PMU | Fixed slot for PMU(Basic) | |
SLOT5 | WTIB | Fixed slot for WTIB | |
SLOT6 | MFB | Fixed slot for MFB |
[Table 3.4.1] Option Boards Installation Table
When the system power on, the default slot assignment is automatically redefined according to board installation status.
Main Board Unit (MBU) Installation
The MBU is installed in the KSU default. It comprised of main processor, four(4) Digital Terminal interface circuits, two(2)
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