No comm link error
A “No Comm Link” error indicates that the front panel processor has stopped communicating
with the main processor, which is located on the digital board. This error indicates that one of
the main processor ROMs may require reseating in its socket. ROMs may be reseated as
follows:
1. Turn off the power, and disconnect the line cord and all other test leads and cables fro
m
the instru
ment.
2. Remove the case cover as outlined in Section 5.
3. Remove the analog board assembly as outlined in Section 5.
4. Locate the two firmware ROMs, U15 and U16, located on the digital board. These are
the on
ly ICs installed in sockets. (Refer to the component layout drawing at the end of
Section 6 for exact locations.)
5. Carefully push down on each ROM IC to make sure it is properly seated in its socket.
CAUTION Be ca
reful not to push down excessively, or you might crack the digital
board.
6. Connect the line cord, and turn on th
e power. If the problem persists, additional
troubleshoo
ting will be required.
4-18 Troubleshooting
2410-902-01.book Page 18 Monday, November 7, 2005 2:49 PM
To Next Page
Loading...
Need help?
General
