Hitachi ATT-20 Installation, Operation, Troubleshooting page 4

REV.
0 April 1997
1.0 June 2008
2 December 2015
3 March 2019
Copyright 2019
Revision History
DATE
Initial issue
Revised to current template.
Updated parts lists and drawings.
Incorporated ECO EE-1223 (2/00).
Miscellaneous minor grammatical
changes. Proof read comments
resolved.
Revised Figure 1-1 and Figure 6-1 to
add R14 and label. Revised Table 6-4
and Figure 6-1 for items 126 and 127.
Revised Table 6-5 to correct ATT-20
Unit part numbers.
Hitachi Rail STS Branding
SM 6299 Rev. 3, March 2019
ATT-20 Audio Track Transceiver
NATURE OF REVISION
ii