Table 1-3. Front Panel Connectors, Indicators, Controls, and Fuses

TM11-7021-202-12

Table 1-3. Front Panel Connectors, Indicators, Controls, and Fuses

Function

Item

Indicating pushbutton switch. Indicates when prime

PWR ON/RESET Indicator

power is applied; excluding battery back-up in a

processor 1, 1X, 3, or 3X chassis. Pushbutton

resets power after power has been interrupted.

Numerical display. Shows the accumulated time

ETM Display

(Elapsed Time Meter) the processor has been

running (power application); excluding battery back-

up operating time in the processor 1, 1X, V3, or

V3X chassis. Elapsed time is shown in hundreds of

hours, plus first place decimal.

LED indicator. The indicator is lit to signify that the

BATT Indicator

+5V memory bus is up; V1, 1X, 3, 3X only.

Indicating pushbutton switch. Indicator is lit to

BITE/BOOT Indicator

signify that BITE self-testing was successful the

last time it was executed. The pushbutton is also

used to load (BOOT) the operating program from a

dedicated external device.

Indicating pushbutton switch. Indicates when a

RUN/RESET Indicator

program is running. Pushbutton is used to reset

operating system and reinitialize the processor.

10 ampere, normal-blo fuse; Phase A leg of

F1, Fuse Assembly

primary ac power wiring.

10 ampere, normal-blo fuse; Phase B leg of

F2, Fuse Assembly

primary ac power wiring.

10 ampere, normal-blo fuse; Phase C leg of

F3, Fuse Assembly

primary ac power wiring.

For core memory processors: 35 ampere, AGC 35

F4, Fuse Assembly

fuse. For semiconductor memory: 30 ampere, AGC

30 fuse. Part of the +28V power wiring.

For core memory processors: 35 ampere, AGC 35

F5, Fuse Assembly

fuse. For semiconductor memory: 30 ampere, AGC

30 fuse. Part of the +28V power wiring.

Power input connector used to connect externally

J1, 7-Pin PWR

supplied ac and dc voltages, plus system

Connector

grounding.

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