Leader Electronics Corp. LT 443D, Инструкция по эксплуатации, Страница: 55 / 239

I-5
4.3 Unit Installation
Install the unit into the slot.
a) Turn off the power to the main frame.
b) Remove the screws that are fixing the blank panel in place (Figure 4-3-1 (a)).
If a unit is already installed, remove the screws that are fixing the unit in place, place
75
Ω
terminators on the unit’s BNC connectors, and pull the unit out. If the unit has
Canon connectors, attach Canon connector plugs, and then pull the unit out.
c) Check that there are no problems in the connector pins inside the slot (Figure 4-3-1 (b)).
d) Insert the unit’s board into the rail grooves (Figure 4-3-1 (c)).
e) Slide the unit in until the unit no longer moves inward (Figure 4-3-1 (d)).
f) Press the unit further into the slot to connect the main frame and unit connectors.
Check that the top and bottom steel plates of the main frame are closely aligned with
the units panel (Figure 4-3-1 (e)).
g) Fix the unit in place using screws (binding screws with Hexalobular socket head cap
M3 x 6 mm). (Figure 4-3-1 (f))
Note: Handling of the unit and main frame
Each unit uses parts that are susceptible to damage from electrostatic discharge.
Damage can also result when mechanical stress is applied to the parts on the board.
Be sure to observe the following points.
• If you are carrying the unit, use dedicated packing material that has measures taken
against static electricity.
• If you are installing the unit, use a wrist wrap to prevent damage caused by static
electricity built up in your body. If a wrist wrap is not available, discharge the statistic
electricity on your body by using metal parts of a rack or something similar.
• While installing or replacing a unit, do not bring objects that may discharge static
electricity.
• When holding the unit in your hand, hold the chassis. Do not touch the parts or
connector pins on the board.
• Be sure to turn off the power to the main frame when installing or replacing a unit.
• Insert the unit in the appropriate slot according to Table 4-2-1.
• Before installing the unit, check that there are no problems in the slot connector pins
(such as a bent or broken pin).
• Be sure not to lose the unit attachment screws.
• Be sure to attach blank panels that come with the LT 443D main frame to unused
slots.
• The number of times that the connector connecting the main frame and the unit can
be attached and removed is 500. Avoid using the unit in a way that requires it to be
attached and removed frequently as it may cause a malfunction.