34
16900A, 16902A, and 16903A Service Guide
5
Troubleshooting
Figure 7
16903A Power Troubleshooting Flowchart
2
Remove power plug for 15 seconds
to reset power supplies.
Apply power.
Are the
fans turning &
power on?
1
Yes
Are power supply
voltages correct?
Replace the
defective
power
supply.
No
Is there
a power
short?
Replace the
damaged
component.
Replace the
MIB.
Yes
The power down signal is
asserted from CPU or MIB
(module interface board).
Check the CPU to MIB cables .
Check the AUX +5V power. Go
to
'To troubleshoot power
problems'
in this chapter.
Replace the CPU.
Replace the MIB.
Check for a power short, burnt
components, traces, etc.
No
Is the
instrument at room
temperature?
Let it cool
and check
for fan
failure.
Possible
overtemp
shutdown.
No
Yes
Yes
No
B
C
A
B
C
Try , then , then .
Return to between each.
A
Did fans
come on for a
second?
Yes
The voltage monitor on the
module interface board caused
the shutdown. Disconnect the
power supply cables, apply
power, and check voltages.
No
2
Summary of Contents for 16900A
Page 1: ...Agilent Technologies Agilent 16900A 16902A and 16903A Logic Analysis System Service Guide...
Page 6: ...6 16900A 16902A and 16903A Service Guide...
Page 14: ...14 16900A 16902A and 16903A Service Guide 1 General Information...
Page 18: ...18 16900A 16902A and 16903A Service Guide 2 Preparing for Use...
Page 22: ...22 16900A 16902A and 16903A Service Guide 3 Testing Performance...
Page 86: ...86 16900A 16902A and 16903A Service Guide 6 Replacing Assemblies...
Page 102: ...102 16900A 16902A and 16903A Service Guide 7 Replaceable Parts...
