IBM 6400 Series Maintenance Manual

134 Troubleshooting
Table 4. Common Communications Problems
Problem
Interface Common Causes
Fails to print from host
–OR–
Prints incorrect characters
–OR–
Prints extra characters
–OR–
Drops characters
parallel – Interface cable defective
– Host/Network configuration
– Printer logic
– Terminating Resistors
serial – Host/Printer interface cable
pinouts incompatible
– Host/Printer/Network
configuration
– Set DTR and RTS both True
– Interface cable defective
– Printer logic
twinax – Interface cable defective
– Host–Printer definition
– Controller/Network configuration
– Printer logic
coax – Interface cable defective
– Controller/Network configuration
– Printer logic

IBM 6400 Series Specifications

General

Brand	IBM
Model	6400 Series
Category	Printer
Language	English