Table of Contents
Advertisement
Most PC serial ports also require a cable with a female DB-9 connector. Terminal
connections will vary, requiring either a DB-9 or DB-25 connector, male or female.
Serial cable options between a y-series device and a PC or terminal are shown in
Table 17.
Table 17. Wiring map for serial cable
Switch 9-Pin Serial Port Null Modem
2 TXD (transmit data)
3 RXD (receive data)
5 SGND (signal ground)
No other pins are used.
Note: As indicated in Table 17 some of the wires should not be connected.
Installing or replacing a power supply unit
The power supplies are hot-swappable and can be replaced while the device is
powered on.
Attention: For the 4002-Y2A, Y4A, Y2C, and Y4C devices, be sure that the airflow
direction of the power supply unit matches that of the installed fan tray. The
power supplies and fan trays are clearly labeled with an arrow with an "E" or an
"I" as shown in Table 2 on page 3.
Figure 26. Installing a power supply unit
To install a power supply unit in the switch, do the following steps.
1. Remove the blank metal plate (or a previously installed PSU) from the
2. Before opening the package that contains the PSU, touch the bag to the switch
3. Remove the PSU from the antistatic shielded bag.
4. Holding the PSU level, guide it into the carrier rails on each side and gently
5. When you are sure the PSU has properly engaged the connector, tighten the
——————————————>
<——————————————
<—————————————>
appropriate slot by removing the two screws with a flat-head screwdriver.
casing to discharge any potential static electricity. Using an ESD wrist strap
during installation is recommended.
push it all the way into the slot, ensuring that it firmly engages with the
connector.
retainer screws to secure the in PSU the slot.
PC 9-Pin DTE Port
2 RXD (receive data)
3 TXD (transmit data)
5 SGND (signal ground)
Chapter 2. Installing a y-series switch
23
Advertisement
Table of Contents
Troubleshooting
