IBM Selectric Service Manual

SLUGGISH PRINT ARMATURE
CAUSED BY MALADJUSTED TRIP LEVER BITE
Figure 30.2
CARRIER RETURN/INDEX
Figure 30.3
Scope:
Time Base:
Vert Amp:
Sync:
Across Register in
Series
w/Mag Coi I
10
ms/cm
1
volt/em
+ Int
Time from pick to carrier return
intlk* opens
Magnet seal time
C/R intlk opens at 190°
Average Mechanical Delay
OLSA Function: Print CR
8.0 ms
67.9 ms
82.0 ms (avg.)
75.9 rils
6.3 ms
*Use C-6 if avai lable on your printer
SPACE/BACKSPACE/T AB
I
I
•
~
-
'~ II
lI-
I
I
I
III .-
Figure 30.4
4-33
Scope:
Time Base:
Vert Amp:
Sync:
Across resistor in
Series with Mag Coi I
5 ms/cm
1
volt/em
+ Int
Time from start of pick to C5
N/C opens
Magnet seal time
C5 N/C opens at 55°
T ota I Mechani ca I De lay
EXCESSIVE MECHANICAL DELAY
Figure 30.5
Time Base:
5 ms/cm
Time from
start of pick to feed-
back
Magnet Seal Time
Feedback Contact Opens
at 55°
Total Mechanicai Delay
OLSA Function: Print
Space
8.0 ms
19.7 ms
6.5 ms
19.7 ms
37.0 ms
27.7 ms
9.3 ms
42.5 ms
26.2 ms
16.3 ms

IBM Selectric Specifications

General

Type	Electric typewriter
Introduced	1961
Keyboard Layout	QWERTY
Carriage Return	Electric
Manufacturer	IBM
Printing Technology	Typeball (golf ball)
Power Source	AC Power
Power Supply	120V AC