8643A-04
SERVICE NOTE
SUPERSEDES: None
8643A Synthesized Signal Generator
Serial Numbers: See Below
Disconnect line power when connecting and disconnecting
ribbon cables
Duplicate Service Notes:
8644A-05 Serials: 0000A00000 / 9999Z99999
8644B-05 Serials: 0000A00000 / 9999Z99999
8645A-06 Serials: 0000A00000 / 9999Z99999
8664A-07 Serials: 0000A00000 / 9999Z99999
8665A-08 Serials: 0000A00000 / 9999Z99999
8665B-06 Serials: 0000A00000 / 9999Z99999
To Be Performed By: Agilent-Qualified Personnel
Situation:
DC power is supplied to certain modules for heating and battery charging while line power is
connected, even with power off. Connecting or disconnecting ribbon cables or modules
plugged into the motherboard with line power connected can result in electrical damage to
sensitive components in the instrument. It is recommended that instruments be unplugged
for any service requiring the disconnection of ribbon cables or modules plugged into the
motherboard.
ADMINISTRATIVE INFORMATION
SERVICE NOTE CLASSIFICATION:
INFORMATION ONLY
AUTHOR:
MW
ENTITY:
5320
DATE: August 1998
ADDITIONAL INFORMATION:
NONE
© 1998 AGILENT TECHNOLOGIES
PRINTED IN U.S.A.
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