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5
Troubleshooting
To troubeshoot system power problems
Power Supplies
To check the power supply voltages
WA RN ING
84
If the system warns you it is powering down before it
powers down, it is a fan/overtemp problem. If it just powers
down, it is a power supply problem.
If the lights do not come on and if the system powers up
momentarily when you plug it in, make sure the power
button hasn't become jammed or stuck in the pushed- in
position.
All 16800 Series logic analyzers have the same 600 W power
supply and a second power supply that depends on the type
of frame:
• The 1- slot, low- power frame (for 16801A, 16802A, and
16803A logic analyzers) has a second, 15 W power supply.
• The 2- slot, high- power frame (for 16804A, 16806A,
16821A, 16822A, and 16823A logic analyzers) has a
second, 175 W power supply.
The power supplies must remain connected in order to test
their output voltages. There are power supply test points on
the MIB board.
Hazardous voltages exist on the power supply. This procedure is
to be performed by service-trained personnel aware of the
hazards involved, such as fire and electrical shock.
Turn off the instrument using one of the methods
1
descirbed in
"To power off the system"
2
Disconnect the instrument's power cord, move the
instrument to a static safe work environment, then
remove the cover (instructions in
the cover"
on page 122).
3
Ensure that the CPU power cable and reset cables are
seated properly.
Reconnect the instrument's power cord, then apply power
4
to the instrument.
"To remove and replace
16800 Series Portable Logic Analyzers Service Guide
on page 120.
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Table of Contents
Troubleshooting
