Tektronix 5000 Series User Manual

4631 / 32 / 33A / 34 : CLUTCH AND CONTROL BOARD MODIFICATIONS # 37349 , 40065
AND 40750 ( CONTINUED )
To solve this difficulty , modification 40750 removes R1 and substitutes a
shorting strap . The control board now changes level once again .
4631,4632,4634
Meanwhile , use of the 105-0520-01 cutter clutch in the 4631 , 4632 and 4634
produced the undersirable effect of failure to cut under low line conditions .
To correct this , modification 40065 was implemented .
This mod calls for R39 on the 4631 , 4632 and 4634 control boards to be
changed in value from 3K2 to 1K2 . The new part number for R39 is 315-0102-00 .
In addition , transistor 0140 is changed to a higher beta 151-0103-00 . These
changes cause the 4631 and 4632 control board part number to roll from
670-4104-05 to 670-4104-06 . The 4634 control board changes from 670-5770-01
to
670-5770-03 .
+15
+30
CR
L1022
R39
1K
2140
-0103
VR39
Q141
A
field kit ,
p / n
050-1375-00 has
been set up
for
replacement
of
the
105-0520-00
cutter
clutch by the
-01
version in
the
4631
,
4632
, and .
the 4634
.
--George
Kusiowski
63/503
, ext .
3928
-31
June 27 ,
1980
Issue 10-13

Tektronix 5000 Series Specifications

General

Brand	Tektronix
Model	5000 Series
Category	Test Equipment
Language	English