HP 5334B Service Manual page 200

8-461. OPTION 700 MATE BLOCK TROUBLESHOOTING
8-462. Troubleshooting procedures for the MATE Block are divided into two parts. The first employs the self
checking operation of the Counter and basic signal testing with a voltmeter and an oscilloscope. The second
troubleshooting method uses signature analysis, described in paragraph 8-451. This is the primary technique for
troubleshooting the MATE Block.
8-463. MATE failures prevent the remote control operation of the HP 5334B, Option 700 Counter. The
Counter's proper operation in the local mode is unaffected.
WARNING
Maintenance described in this section is performed with power sup-
plied to the instrument and protective covers removed. This main-
tenance should be performed only by qualified service personnel who
are aware of the hazards involved (for example, fire and electrical
shock). Where maintenance can be performed without power applied,
.the instrument should be disconnected from its power source.
8-464. Self-Test and Basic Signal Checking
a. When the HP 5334B is switched ON, it performs a self-test to verify the operation of its various sub-
sections. If a FAIL 9.2 or a FAIL 9.4 message is displayed, the MATE Block could possibly be faulty.
This failure can be verified by isolating the MATE Block from the instrument. Skip to step d if you
do not want to isolate the MATE Block.
b. MATE BLOCK ISOLATION:
1.
Turn power OFF.
2.
Remove integrated circuits U702, U704, U705, and U706 from their sockets on the A1 Main
Board.
HP 5334B - Service Manual
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