IBM 8270, Installation And Service Manual

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100 - 240V
6 - 3A 50/60Hz
P/N 72H4648
DC OK
AC OK
AC Power
Connector
Status
LEDs
Figure 1-5. The 8270-800 Power Supply Faceplate
One connector and two LEDs are on the power supply faceplate. The connector is
for a standard three-prong power cord that connects to 120/220 V AC at 50/60 Hz
line frequency. The LEDs indicate the status of the ac power input (AC OK) and
the DC power output (DC OK). See Table 1-1.
Table 1-1. Power Supply Status LEDs (8270-800 Only)
LED State Meaning
DC OK On DC power output is OK.
Off DC power output is not OK.
AC OK On AC power input is OK.
Off AC power input is not OK.
Processor Card
In the 8270-600, the Token-Ring Processor Card comes pre-installed in the lower
left slot. As part of the installation, you must install the Token-Ring Processor Card
in the 8270-800 in the third slot from the left. Though similar in function, the cards
are not interchangeable. The Token-Ring Processor Card faceplate has three
status LEDs, one communication port, one 4-character alphanumeric display and
two push buttons. See Figure 1-6 on page 1-6. Each of these items is discussed
in detail in the following sections.
Chapter 1. Physical Characteristics and Features
1-5