Sun Microsystems Ultra 5, Service Manual

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3-2 Sun Ultra 5 Service Manual • February 2000
3.2 Pre-POST Preparation
Pre-POST preparation includes:
■
Setting up a TIP connection to another workstation or terminal to view POST
progress and error messages. See Section 3.2.1 “Setting Up a TIP Connection” on
page 3-2.
■
Verifying baud rates between a workstation and a monitor or terminal. See
Section 3.2.2 “Verifying the Baud Rate” on page 3-4.
If a terminal or a monitor is not connected to serial port A (default port) of a
workstation to be tested, the keyboard light-emitting diodes (LEDs) are used to
determine error conditions. See Section 3.4.3 “POST Progress and Error Reporting”
on page 3-19.
3.2.1 Setting Up a TIP Connection
A TIP connection enables a remote shell window to be used as a terminal to display
test data from a tested system. Serial port A or serial port B of a tested system is
connected to another Sun workstation monitor or TTY-type terminal.
To set up a TIP connection, proceed as follows:
1. Connect serial port A of the tested system to serial port B of a second Sun
workstation using a serial null modem cable (connect cable pins 2-3, 3-2, 7-20, and
20-7). See
FIGURE 3-1
.
FIGURE 3-1
Setting Up a TIP Connection
2
3
7
20
2
3
7
20