Connector Pin Arrangement For Interface; Connector Pin Arrangement For Dc Power Supply - Hitachi 902 Service Manual

15.3.2 Interface
NOTE: (3) indicates a key pin.

Connector Pin Arrangement for Interface

Return Pin No.
1
(3)
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
Connector Pin Arrangement for Interface
(FDA)

Connector Pin Arrangement for DC Power Supply

Pin No. Power Supply Specification
1
2
3
4
Signal Pin No.
2 MODE SELECT
4 N.C.
6 N.C.
8 INDEX
10 DRIVE SELECT 0
12 DRIVE SELECT 1
14 N.C.
16 MOTOR ON
18 DIRECTION SELECT
20 STEP
22 WRITE DATA
24 WRITE GATE
26 TRACK 00
28 WRITE PROTECT
30 READ DATA
32 SIDE ONE SELECT
34 READY
(Connector for
interface)
Pin 2
Pin 1
+5 V
+5 V RETURN
+5 V RETURN
NON CONNECTION
15 - 8
Signal Name
Pin 34
Pin 33