Tektronix DC 502 - Page 38

DC 501 EFF SN B060000-up
DC 502 EFF SN BO 70000 -up
ELECTRICAL PARTS LIST AND SCHEMATIC CHANGE
CHANGE TO:
R137
311-1554-00
200 kΩ, Var
ADD:
C121
283-0111-00
0.1 µF, Cer, 50 V
(R137 and
C121 are located on
Diagram
COUNTER TIME BASE & CONTROL)
+ 5V
\A
CRI27
CRI22C7
- IOV
PARTIAL-
M21, 279/274