Loop/Exit; Kb-Tp/Skip; Test/Skip; External Indicators - Control Data Corporation INFORMATION SYSTEMS TERMINAL II Hardware Maintenance Manual

LOOP/EXIT
In the LOOP position, the terminal keeps repeating the
internal diagnostic tests. In the EXIT position, it runs
one pass of the internal diagnostic tests and exits. This
switcQ functions only if TEST/SKIP switch is set to TEST.
KB-TP/SKIP
In the KB-TP, position the operator may perform the
keyboard/touchpanel test. In the SKIP position, this por-
tion of the internal diagnostic test is bypassed.
TEST/SKIP
In the TEST position, the terminal runs the internal diag-
nostic. In the SKIP, position it bypasses all tests and
procedes with the autoload of the terminal controlware.
This switch should be used in conjunction with the LOOP/
EXIT switch.
EXTERNAL INDICATORS
These indicators consist of six red light-emitting diodes
(LEOs). The LEOs are set slightly off-center within their
sockets so as not to interfere with the operator's line of
sight during normal operation.
The LED indicators serve two purposes: 1) to indicate the
status of the terminal when running the resident diagnostic
program and, if an error is detected, the area where the
program failed (see section 6 for a description of these
error codes); and 2) during normal terminal operation to
monitor the signals described by the labels explained in
the following paragraphs. All the LED indicators may be
forced to the ON state by pressing the RESET switch and
holding it depressed.
82100083
0
2-5
I