Operator Controls And Indicators - IBM 3278 Series Maintenance Information

01C/XL1
CRT
Voke
01A/A1H2
Wht/Red (Vert Down Ret!
WhtlYel (Vert Up Red
Or (Horz Drive!
Wht/Or (Horz Ret!
Vel (Vert Up!
To Frame Ground
Red (Vert Down!
01C/XVl
14
CRT
Base
5
9
11
13
C/PSl
.!2..
High-
1
Voltage
3
Power
5
Supply
6
7
Blue
Red
Vel
01A/Al
-
06
B6
B02
003
84
01D/PS1-P2
H2
+400 from PS
Focus
+44 to HVPS
HVPS Return
Disable
~
Note: Pl - Pin 2 is blank
01C/Bl-Sl 01A/A1H2
........
-
-
-
Security
Key
Lock
01C/DSl
Audible
Alarm
01C/A1Al
P1
1
Indicator 3
Asm
6
7
8
N/O Vel G3 (Gnd
=
no display!
C Red J4 (With feature
=
gnd!
C Blk G7
-
Vel
J5
(Gnd for alarm!
Red 1+5)
J3
Blk
J7
01 A/Jl
-=-
01C/A1Pl-ll,12
01D!PS1-P2-1
01 C/ A 1-P1-9
01A/A1/H2
P2
To 01D/A1J2
Figure 4-14. Operator Controls and Indicators
4-16 SV27-2510-6