HP 3000 Series Installation And Service Manual

I
Installation
Table 2-2. DRT Number Switch Settings
DRT
Switch No.
Number
1
2 3
4 5 6
7
8
25 (decimal)
x x
x
0
0
x
x 0
26
(decimal)
x x
x
0 0
x
0
x
.
=
Legend. O open
X = closed
c. The fourth block of miniature rocker switches (identical in
appearance to the other three blocks described in steps a and
b) is located in column 12, row 1, of the INP-MPU board (as
shown in figure 2-1). These switches have been preset at the
factory, but it is advisable to visually check their settings
against those listed in table 2-3 in the column entitled
"Required Position for System Use". (This visual check is to
verify that no inadvertent changes occurred during transit.)
Switches 1 through 7 should always be left in the positions
shown. Switch 8 is normally left in the OPEN position, but
it can optionally be closed to cause the self test to repeat
in a continuing loop.
Switch
No •
Table 2-3. Function Switch Settings
Function Enable Required Positionl
1
Position for System Use
1
...-~~~-r-~~~~~~~~~~-~-~-~--t~~- I
1
2
3
4
5
6
7
8
Unassigned Open
Watchdog Timer Closed
Access INP ROM (see note 1) Closed
Execute from ET PROM instead of Closed
self test after reset of INP
Access ET PROM Closed
exclusively (see note 1)
System Interface Indicator Closed
Unassigned Open
Loop Self Test (see note 2) Closed
Open
Closed
Closed
Open
Open
Closed
Open
Open
Uotes: 1. Simultaneous closure of switches 3 and 5
defaults to ET PROM access.
2. With HP-supplied SOS ROMs, the self-test
L
program will loop when switch 8 is closed.
···=·-------------· ------
2-6
JUN 1980

HP 3000 Series Specifications

General

Brand	HP
Model	3000 Series
Category	Desktop
Language	English