HP 8340b User Manual

HP
8340B/41B
Assembly-Level Service
Troubleshooting
Aids
SELF
TEST
Self
test
verifies:
•
A60
microprocessor
assembly
operation
•
That
address
and data
information
can
be
transmitted accurately
over
the
instrument
address
bus
and instrument
data
bus.
Refer
to
OVERALL INSTRUMENT
TROUBLESHOOTING
for details.
PHASE-LOCK
INDICATION
LEDS
Three
green
LEDs
in
the
instrument
indicate
when
a
phase-lock
condition exists
for
three phase-lock
loops.
Each
LED is
lit
when
its
specific
loop is
phase-locked:
•
A37DS1PLL1
•
A39DS1
PLL3
•
A50DS1 YO
POWER
SUPPLY INDICATION
LEDS
Eight
yellow
LEDs
indicate
when
the
power
supplies
are
at
their required
voltage.
Each
LED
is
lit
when
its
specific
power
supply
is
up:
A35DS1
+22V
A52DS1
+5.2V
A52DS2
+20V
A52DS3
+12V
A53DS1
-5.2V
A53DS2
-40V
A53DS3
-10V
A56DS1
-15V
Three
red
LEDs
indicate:
•
A19DS1
Voltage
Is
present on
the
A19
capacitor
assembly.
•
A52DS4
The
instrument
is
in
shutdown
due
to
over-temperature.
•
A62DS1
Line
power
is
connected.
HP
8340B/41B
Assembly-Level
Service
Troubleshooting
Aids
A-25

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English