IBM System/32 Introduction And Maintenance Manual page 289

Sync + On Test Point B09 (+ Off)
2
3
4
5
6
7
8
9
10
11
12
13
14
Notes:
Line Name or Function
- Power On
- Stop Dual Levell
- Power on Delay
(in disk drive)
- Channel Data Protect
+ Hammer Fault
- Inhibit UV Dual Levell
Drop Dual Level Voltages l
- Pick K2
Drop K3
+ No Voltage Dual Levell
- Stop Multilevel
+ Inhibit UV Multilevel
Drop Multilevel Voltages
- Pick K1
Test
Point
(Note 1)
B13
A2F2M04
A202J12
A202G08
None
B03
None
G13
D13
None
D03
are se uence card test oints exce t
1. These q p p
for lines 3, 4, and 5.
2. The +24 Vdc decays slowly as shown. The
-24 Vdc decays in approximately 0.1 s.
3. Time for power down depends on the decay
of +24 Vdc to a level where K3 no longer
stays picked.
4. Becomes plus when +24 Vdc decays to +4.6
and -24 Vdc decays to -2.1. This prevents
the functioning of the disk drive write circuits.
I
Also refers to trilevel supply when serial printer is
installed.
Seconds
0 1 2
ALD I I
I
6 7
8 I
10
I I I I
S0180 .J ..,
~
S0115
~
DG100
-,
D0050
-,
D0090
S-
S0110
-,
-
+24 Vdc (note 2)
o
Vdc
S0115
~+24Vdc
---OVdc
I
(note 3)
~
~)
I
(note 4)
S0115
I
S0110
I
I
S0115
r
.. ~
Power Supplies 8-5