HP 5501A Operating And Service Manual page 212

sec
on
Troubleshooting
6.1
INTRODUCTION
This section provides system troubleshooting procedures that will locate
a
problem to the unit
or circuit card level. The procedures determine a s quickly a s possible whether the trouble lies
in the system unit hardware or the system controller. System controller troubleshooting, in-
cluding all software and standard peripherals i s contained in separate manuals (refer to Fig-
ure
7-2, Manuals Supplied with Laser Transducer System).
The troubleshooting information i s divided into the following categories:
a. General troubleshooting information. You should use this information when trouble-
shooting a system that fails after it has been installed and operating. If for any reason
you cannot quickly locate the problem, the detailed troubleshooting procedures will
prove helpful.
b.
Detailed troubleshooting procedures. You should use these procedures when you are
installing your system and cannot obtain the results called out in the installation and
checkout procedures. The detailed troubleshooting procedures can also be used if you
are having difficulty in locating a problem in a system that has failed. In the latter case,
it is not necessary to totally disassemble your system. However, be certain as you read
through the installation and checkout procedure that your system meets each of the
required responses (e.g.,
LED
on the 10780A Receiver is lit when so specified).
Whatever method of troubleshooting you are using, be sure you read and understand the in-
formation contained in the following troubleshooting assumptions paragraph.