Tektronix 434 - Page 222

432/R432 EFF SN B100000-up }
434/R434 EFF SN BlOOOOO-up
*
ADD:
C471
ELECTRICAL PARTS LIST AND SCHEMATIC CORRECTION
A2 VERTICAL Circuit Board Assembly
281-0592-00 ‘ 4.7 pF Cer ±1/2 pF
A6 TRIGGER SOURCE SWITCH Circuit Board Assembly
ADD:
R61
CHANGE TO:
316-0104-00 \ 100 kfl 1/4 W
A8 HORIZONTAL Circuit Board Assembly
10%
. %S .
C663
281-0549-00
68 pF
Cer
500 V
CR644 152-0125-00
Tunnel TD3A,
4.7 mA
R640
316-0392-00
3.9 kfl
1/4 W
10%
.
V".’ '
IOOK S
R 6 0 A
50 K
— W v ----
PARTIAL
1 SW EEP
i
-v .
r-
I
P76 P 7 8 -/
As
As
4 4 7 0
•• : ..
N
C4-7I
4 f-
CHANNEL SWITCH
<3>
W N A -
R4-7I
R470
- • . •
P 2 5 -2 T O
y ------ >. Q280
P I8 -4
< s >
M18,475/172
Rev.