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HP 811 OA Service Guide
Selftest
P
ower-
U
p Selftest
Th e HP 8110 Α Se lftest checks only the Micro processor Board at
power-up . If thi s test
f
a il s yo u can p ress HELP to see α list o f t h e
spec ific error
m
essages resulting
f
rom th e test . If th e list is
l
onger
than α
s
in gle scree n, use t he cursor key s to scroll th e list .
N
ote th at α
l
on g error li st can result
f
rom α single ini tial error.
Th ere fore,
b
egin to solve
p
roblems starting wi th the first
m
essage in
the list and after t he
p
roblem is cleared run Selftest again .
These m essages are stored in the Flash EEPR O Ms or on the M emory
Card .
Extended Selftest
The extended Selftest tests all installed
b
oar ds .
Start t he exten ded selftest on th e CONF I G screen:
1 .
U
se th e Kno b to se lect S ign al
2 .
P
ress εΝΤΕ
R
.
If t he Se lftest
f
ails, α flashin g Ε i s displaye d. Press HELP to see the
list of error
m
essages .
Confidence
L
evel
I
t i s not poss ib le to give α Confidence
L
evel fig u re for th e Selftests .
M ic
r
oprocesso
r
Selftest
F
ailure M essages
4-2 T
r
o
ub
les
h
ooti
n
g
After compl etion
o
f P erforman ce tests α confidence
l
e vel
o
f 96% ο can
b
e assumed. Thi s is
b
ecause all
p
oss ible sett ings and fun ction s are
n
ot ch ecked by the
P
er form ance
T
ests .
Th e
f
o ll owing is α list of t he Micro processor Board error
m
essages
and their
m
eanings . The first
p
art of the list shows th e
m
essages
as they are displayed on t he in stru ment. The HP-ΙΒ
m
essges are
i
dentical , bu t with the
m
essage : -330 Se lf -test
f
ai led added in front .
Selftest error: Mi cro p roc . b oard
f
ailed
H ardware
f
ailure on the Micro p rocessor
B
oard
R
O M test
f
a il ed
Fl ash EPROM s ha v e
f
ailed test.
RAM test fa il ed
RAM S h ave
f
ailed test
Crystal Referen ce
f
or υΡ
l
ost
L
oss of cry stal refere n ce. Th e VCO is runnin g
at approx imately half normal
o
perating speed,
determined by an internal
v
oltage reference for th e
V CO, in stead
o
f the ex ternal cry stal
f
re quen cy
VCO
f
or υΡ h as not
l
ocked
V CO is enabled but has
n
ot
y
et
l
ock ed . Normally
th e VCO locks-on to th e requ ired
f
reque ncy
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