HP 1660E Series Service Manual page 148

Troubleshooting
To use the flowcharts
10
CHART
1
PERFORM HP-IB
SELF~TEST
CHART 10
DOES
SELF TEST
PASS
?
YES
VERIFY HPwlB
CONRGURATION
CONAGURATrONS OK?
YES
PERFORM RS-232C
EXTERNAL lOOPBACK TEST
DOES TEST PASS?
NO
ARE
RS-232C
&
HP-IB CABLES
SWITCHED ON CPU
BOARD?
YES
SWITCH CABLES AND
RERUN RS-232C TEST
Troubleshooting Flowchart to
5-12
NO
NO
YES
NO
REPLACE CPU BOARD
RECONFIGURE
HP~IB
CHECK HP-IB
CABLE IS SEATED ON
SOCKET ON CPU BOARD
IS (ABLE SEATED?
YES
CHECK CABLE CONTINUITY
IS
(ABLE GOOD
?
YES
NO
NO
RESEAl CABLE
REPLACE CABLE
REPLACE CPU BOARD
ENO