Network Card Leds; Figure 1-6 The Phaser 550 Rear Panel - Tektronix Phaser 550 Service Manual

1
General Information

Network card LEDs

1-10 Phaser 550 Color Printer
The figure below illustrates the rear panel.
Parallel
SCSI

Figure 1-6 The Phaser 550 rear panel

The Ethernet network card has two LED indicators:
TX indicator (yellow); blinks while data is transmitted to the host. The
LED is off while no data is being sent.
Twisted Pair (10baseT). RX indicator (green); blinks while the
network card is receiving data. The LED is on steady while no data is
being received. If the LED is off steady , then a problem (probably
hardware) has occurred at the network hub.
ThinNet (10base2). RX indicator (green); blinks while the network
card is receiving data. The LED is off stead y while no data is being
received. If the LED is on steady , then a problem (probably hardware)
has occurred at the network hub.
Note Do not use both Ethernet connectors at the same time. If both are
used the 10base2 line is ignored.
Smart card slot
for network card
Option Option
P1 P3
P2
RS-232
serial
LocalTalk
Option
P4
9013-05a