Epson LQ-2550 Technical Manual page 217

Computer
Diagnostic Tool
Cable
Table 5-2. Printer Diagnostic System
EPSON PC (EQUITY)
Floppy disk (2DSX 1)
Diagnostic cartridge
Operational manual
D-SUB 25 pin l/F cable"
AMPHENOL 36 pin l/F cable"z
FG
CTS
Host
Computer
Figure 54. RS-232C l/F Cable Circuit
CN3
0 2
0 3
0 2 0
0 7
VF Cable LQ-2550
5-5
EPSON QX-16
. Floppy disk (2DDX 1)
FG
REV
DTR