IBM System/370 145 Manual page 152

SUMMARY
The most significant advantages of the 3505 Card Reader and the 3525
Card Punch can be summarized as follows:
• Configuration flexibility - Choice of either of two read speeds
combined with anyone of three punch speeds
• New functions - Optical mark reading, card printing, and read column
eliminate
• New RAS features - Automatic feed retry, friction feeding, optical
reading, enhanced read checking, automatic punch retry, improved
error recovery procedures, and more definitive hardware failure
identification provided by the control unit
• Operator-oriented design - Alternate card stacking, easier card jam
removal, and explicitly defined intervention-required recovery
procedures
142 A Guide to the IBM System/310 Model
145