HP 8114A - Timing Board Selftest Failure Messages; Output Board Selftest; Output Board Selftest Failure Messages

EJP 8114A Service Guide
Timing Board Selftest Failure Messages
the HP-IB messages are identical, but with the message: -330
Self-test failed added in front.
Failure in PERIOD circuitry
The PERIOD TIGER IC on the Timing Board may be
faulty
Failure in DELAY circuitry
The DELAY TIGER IC on the Timing Board may be
faulty
Failure in WIDTH circuitry
The WIDTH TIGER IC on the Timing Board may be
faulty
Failure in TRIGGER OUTPUT circuitry
Selftest cannot find a signal after the Trigger
Output amplifier
Output Board Selftest
Figure 5-2 shows the Selftest point on the Output Board.
followed by a list of the possible failure messages.
TP: MB-SIGNOUT
I
POSlNEG ~
ENlDlS
____-__
,.- --....----
u FLVAR
VAR BASELINE
(if Opt 001 is
installed)
Figure 5-2. Testpoint used in Output Board Selftest
Output Board Selftest Failure Messages
The HP-IB messages are identical, but with the message:
Self-test failed added in front.
Failure in AMPLIFIER circuitry
This is
-330
The Amplifier circuitry on the Output Board may
be faulty.
5.4 Troubleshooting