AT&T 3B2/300 Technical Reference Manual page 599

- - - - - - - - - - - - - - - - A p p e n d i x : CONNECTOR AND CABLING INFORMATION
34-HARD DISK READ/WRITE CONNECTOR, J07
PIN DESCRIPTION FUNCTION
1 GROUND GROUND
2 HEAD SELECT 3 (HS3(0]) OUTPUT
REDUCED WRITE CURRENT (RWC(O])
OUTPUT
3
GROUND
GROUND
4 HEAD SELECT 2 (HS2(0]) OUTPUT
5 GROUND GROUND
6 WRITE GA TE (WGA TE(O]) OUTPUT
7 GROUND
GROUND
8
SEEK COMPLETE (SKC(O])
INPUT
9 GROUND
GROUND
10 TRACK O (TRK(O]) INPUT
11
GROUND
GROUND
12 WRITE FAULT (WRTFLT(O]) INPUT
13 GROUND GROUND
14 HEAD SELECT O (HSO[O]) OUTPUT
15 GROUND GROUND
16 CONNECTOR COMMON (J2P7) GROUND
17 GROUND GROUND
18 HEAD SELECT 1 (HSl(O]) OUTPUT
19 GROUND GROUND
20 INDEX (INDEX[O]) INPUT
21 GROUND GROUND
22 READY (RDY(O]) INPUT
23 GROUND GROUND
24 STEP (XSTEP[O]) OUTPUT
25 GROUND GROUND
26 DRIVE SELECT O (DSELO[O]) OUTPUT
27 GROUND GROUND
28 DRIVE SELECT 1 (DSELl(O])
OUTPUT
29 GROUND
GROUND
30 NOT USED
NC
31 GROUND
GROUND
32 NOT USED
NC
33 GROUND GROUND
34 DIRECTION IN (DIR(O])
OUTPUT
LEGEND:
NC No Connection
CONNECTOR AND CABLING INFORMATION B-17