Rear Panel; Network Card Leds - Tektronix Z740/N - Phaser 740 Color Laser Printer Service Manual

Rear panel

Connectors
The rear panel of the printer features the host interface connectors:
Bi-directional parallel (high-density connector).
Twisted Pair10baseT Ethernet connector. RX indicator (green); blinks while
the network card is receiving data. The LED is off steady while no data is
being received. If the LED is on steady, then a problem (probably hardware)
has occurred at the network hub.
SCSI high-density connector (external hard disk drive or optical scanner
only).
With the addition of a network card, the printer can feature either of these groups of
connectors:
ThinNet (100base2) and Twisted Pair (100baseT) Ethernet connectors. RX
indicator (green); blinks while the network card is receiving data. The LED
is off steady while no data is being received. If the LED is on steady, a problem
(probably hardware) has occurred at the network hub.
LocalTalk connector.
Unshielded Twisted Pair (10baseT) and shielded Twisted Pair (DB-9) Token
Ring connectors.

Network card LEDs

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 (100baseT). 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 (100base2). RX indicator (green); blinks while the network card is
receiving data. The LED is off steady while no data is being received. If the
LED is on steady, then a problem (probably hardware) has occurred at the
network hub.
TP Link. On steady indicates good circuit to nearest port; off indicates no
circuit.
100 MBS. Ethernet speed is 100 MBS when lit.
Note
Do not use both Ethernet connectors at the same time. With a
Ethernet or Token Ring network card installed, the built-in 10baseT
port is disabled.
12 Phaser 740 Color Printer