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.
1-8
