Signal Ground Terminal; Dc Power Input Requirements - NEC D2246 Maintenance Manual

8-inch winchester disk drive
Table of Contents

Advertisement

Table 7-1 P4 Pin Assignments
PIN NUMDDR
FUNCTIO~
I
1
+24 V dc
\
I
2
24 V return
3
12 V return
I
4
-12 V dc
I
5
+5 V dc
!
I
!
6
5 V return
The recommended mating connector for P4 is described below.
• Cable side housing- AMP PIN 1-480270-0
• Receptacle contact- AMP PIN 60617-4
AMP PIN 60619-4
• Cable wire
- No. 18 AWG standard wire
7.2.2 Signal Ground Terminal
The signal grounding wire is connected to the SG terminal. The recommended mating
connector for the SG terminal is described below.
• Cable side housing- AMP Plasti-Grip Terminal
• Receptacle contact - AMP PIN 170782-1
• Cable wire
- No. 18 A WG standard wire
7.2.3 DC Power Input Requirement
Table 7-2 lists dc input requirements.
Table 7-2 DC Power Requirements
VOLTAGE
TOLERANCE
CURRENT
(VOLTS-DC)
(+VOLTS-DC)
(AMPERES-DC)
+5.0
0.25
4.0
-12.0
0.60
1.0
+24.0
2.40
3.0 average
5.5 peak
7-3
RIPPLE
(MILLIVOLTS P-P)
100
100
240

Advertisement

Table of Contents
loading

Table of Contents