IBM 6400-I15 Maintenance Manual - Page 298
CMX Controller, RS232/RS422
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Controller, CMX 298 J201 RS232/RS422 1 2 3 4 5 26 6 7 8 9 10 11 12 13 14 15 16 27 17 18 19 20 21 22 23 24 25 HOST TX HOST RX HOST RTS HOST CTS HOST DSR HOST DCD NC NC NC NC NC NC DIFF RXD- NC DIFF RXD+ NC DIFF TXD- HOST DTR NC NC NC NC DIFF TXD+ J112 Centronics I/O CNC PN 1 1 N STROBE I/O CNC PN 19 2 I/O CNC PN 2 3 P1 I/O CNC PN 20 4 I/O CNC PN 3 5 P2 I/O CNC PN 21 6 I/O CNC PN 4 7 P3 I/O CNC PN 22 8 I/O CNC PN 5 9 P4 J110 I/O CNC PN 23 10 Front Panel J107 VCC Motor Sensor Right I/O CNC PN 6 11 P5 I/O CNC PN 24 12 I/O CNC PN 7 13 P6 1 2 470 PF 10% 50V 3 4 5 6 7 8 N FP DAT AVAIL 1 FP CLK 2 N FP LED WR FP DATA 3 470 PF 10% 50V 4 5 6 N FP LCD WR 7 8 9 10 11 12 13 14 15 16 17 18 19 20 I/O CNC PN 25 14 PF 1 RIB R1 PF 2 RIB R2 PF 3 RIB R3 PF 4 +48V I/O CNC PN 8 15 I/O CNC PN 26 16 I/O CNC PN 9 17 I/O CNC PN 27 18 I/O CNC PN 10 19 I/O CNC PN 28 20 I/O CNC PN 11 21 P7 P8 N ACK BUSY RIB R4 BANK FAN+ EXH FAN+ I/O CNC PN 29 22 I/O CNC PN 12 23 I/O CNC PN 30 24 PAPER EMPTY EXH FAN- I/O CNC PN 13 25 BANK FAN- PLAT OPEN SW 0.01 mF 10% I/O CNC PN 31 26 I/O CNC PN 14 27 R RBN POST+ 100V I/O CNC PN 32 28 PLAT OPEN RET I/O CNC PN 15 29 R RBN POST- I/O CNC PN 33 30 SLCT N INIT N AUTOFEED N FAULT PI MPU- COVER OPEN SW MPU+ I/O CNC PN 16 31 VCC I/O CNC PN 34 32 NC 4.7K I/O CNC PN 17 33 0.1W I/O CNC PN 35 34 N DP SEL COVER OPEN RET I/O CNC PN 18 35 EXT 5V I/O CNC PN 36 36 N SELECT IN 37 HOST LOGIC H 38 N DP EN CAUTION: Do not remove or replace 39 10K 40 0.1W the NVRAM. The NVRAM contains a lithium battery that can explode if it is replaced incorrectly. NVRAM is replaced only at the factory. 470 PF 10% 50V CHASSIS GND Wire Data