Bat Before Display Initialization - IBM 6360 Product Support Manual

Panel 1
A - Over Voltage/Under VOltage}
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Power Supply LEOs
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B
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C - Over Temperature
D - Error LEDs
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Figure 9-2. Electronics Module CLEDs)
BAT Before Display Initialization
BAT before display initialization is a
sequence of tests that run before the
display is operational. Progress and
error codes are indicated on electron-
ic panel 1 where the five system sta-
tus LEDs show the BAT progress. The
status is shown by the electronics by
switching LEDs D through H on or off.
This generates patterns which are read
as BAT progress codes. These LED pat-
terns change as the BAT sequence
continues. BAT before display
initialization is shown in Figure 9-3.
The BAT stops when a test fails, which
permits the LED pattern to be read.
The five LEDs, D through H, display
system status.
11;1
~
3 4 5
:~
0
O~ 1~ ~ ~. ~
o
G 68 7 .
oH
go
@~
GoTo
Next Test
LEDs
To Post Display
Phase
Of BAT
Figure 9-3. BAT Before Display
Initialization
9-4 IBM Displaywriter Product Support Manual