Tektronix 502A - Page 102

!
SECOND AMP.
DRJVEp. CF*S
+ 350V
L V474A
U %/2AT7
5 +IOOV
■» V454
6AU6
4-102
+ 55OV
R.4BO
:R-435
■50K-
•2MV/CM
DIFF
BAL
R.4B7
+ I00V
2MV/CM'
GAIN
R4G2
C4G9
0.7-3
C470
R.470
90 K
g-465
5.G M
R.472
22R
R.4G8
10 K-
— w+-
R.4B8
V464
VOLTAGE READINGS WERE obtained
WITH CONTROLS SET as FOLLOWS:
INPUT SIGNAL ......................... NONE
SENSITIVITY .................................... 2OV/CM
VERTICAL POSITION:
FOR LOWER.VOLTAGE READINGS • • FULL RIGHT
FOR UPPER VOLTAGE READINGS ‘ ' FULL LEFT
c,
FEEDBACK.
4-lOOV
-I5OV
| POSITION]
R-469
IOK-
— Wv —
+ 85OV
R.474
-I
OUTPUT AMP.
R-48G
'Ll R
TO LOWER.
‘ DEFLECTION
PLATE
LIGHT INDICATES
UPPER.-BEAM AMPLIFIER.
IS CONNECTED TO THE
HORIZ DEFL PLATES
<R-47G»
>27 K
( SENSITIVITY)
I variable I
X
V474B
k/2A77
TO LEFT HAND
DEFL PLATE
THRU SW489-2R-
(HORlZ AMP DIA6)
SW 469
HORiz DEFL I
PLATE SELUTORl
ALSO SEE HORIZ AMP
I t TIME-BASE GEN
> t>IAG»
+ IOOV
P-467
5 .G M
p.480
9OK
► — —
R-482
22}L
+ 102
+ 98
V4B4A
>2 J2AT7
.lV/CM
GAIN ~
R.475
GAIN ADJ
FOR- HOR.II
MODE
R-4SS
33R
7 K-
P-478
4.7K-
1.5-7*'
R.479
4.7 R.
I
V484B
k/2AT7
+ 176
P-464
27 K
+ 309
1
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
+ IOOV
1!
T
H upper .
BEAM
1 VERT
AMP
I ONLY
I
TO UPPER.
DEFLECTION
PLATE
+ 650V
TO RIGHT HAND '
•DEFL PLATE
THRU SW489-2R. I
(HORIZ AMP DIAG) |
SEE PARTS LIST FOR. EARLIER
VALUES AND 5/N CHANGES OF
PARTS MARRED WITH BLUE
OUTLINE
R.494
220 K-
R49I
+ 1OOV 3.5 m
R495 <4 _______
DC
i^Tp-IG
-I50V
+ IOOV
INT. TR.IG. C F
-I5OV
V493
6AU6
INTERNAL TRIGGER SIGNAL
TO SWIO-IF
(TIME-BASE TRIG DIAG)
963
UPPER. BEAM VERTICAL AMPLIFIER.
LOWER BEA M VERTICAL AMPLIFIER.
CIRCUIT NUMBERS
400 THRU 499