System Dc Voltage Tolerances - HP 3000 III Series Manual

System Installation
d. Set the Power Control and Display Panel DC POWER LOGIC and
MEMORY switches to ENABLE.
e. Check that all Power Control and Display Panel DC VOLTAGES
and DC STATUS ind ica tor s are lighted. (The BCHG ind ica tor may
be slowly flashing to indicate that the battery pack is being
charged. When the batteries are fully charged, the BCHG in-
dicator will stop flashing and remain lighted.) If all the
indicators are not lighted, refer to Section X to determine
the problem.
f. Open the front door of the CPU equipment bay and, at the top,
set the PANEL and PF/ARS (Power Fail/Automatic Restart) tog-
gle sw itche s to ENBL.
11-16. SYSTEM VOLTAGE CHECKS
Prior to performing any system verification procedures, allow the
system to warm-up for approximately 15 minutes and then check
that all the Power Control and Display Panel DC VOLTAGES are
within the tolerances specified in table 11-6. Use the Power
Con-
trol and Display Panel voltage and common ground test points to
measure the system vol tages. If any measured vol tage is not
wi thin the lim its specified in table 11-6, adj ust the appropr iate
power supply in accordance with the instructions contained in
Section
X.
Table 11-6. System DC Vol tage Tolerances
1------------1-------------------1
I 1 Voltage Tolerance
I
Test Point
I
1
DC Voltage
---------r---------
1
Min
I
Max
I I
----+1'5----- --+14:-5-- --:;:I'6:5--
+12B +11.9 +12.1
+5 CPU +5.17 +5.17
+5B +5.0 +5.25
+5 VI +5.0 +5.25
+5 V2 +5.0 +5.25
+5 V3 +5.0 +5.25
-5B -5.0 -5.25
-5 -4.5 -5.5
-15 -14.5 -15.5
....
'
....
,.-'
...
'
....
~'
.....
_--
----------------- --
--
---
11-11. SYSTEM VERIFICATION
To verify that the system operates correctly, proceed as follows:
a.' Run the system microdiagnostics in accordance with the
instructions contained in the HP 3000 Computer S¥stem
Installation Manual, part no. 30000-90147.