Appendix 4-3 C; Parts Location Diagram - HP 3400A Operating And Service Manual

•
A6 CHOPPER AMPLIFIER ASSEMBLY (03400-66504)
, ... -,\
IDSS02, ,. _ _ _ _ �
.... t_ v .: ,- q, �J
\ _ "
A5
CHOPPER
ASSEMBLY
�
�
SHOWS BASE ORIENTATION
eOOOOOOOOOOOOOt!)
•
FROM A7-I'O
- 17.5V
.
PHOTOCHOPPER
ASSEMBLY
FROM A1-19
- - -
90 VAC
, -,
R�D <
I
FROM A7-20
+ 77V
FROM A7-17
90 VAC �5f- - ---i f- - -.J
WHT-
MODULATOR
BLK
I
, ,
I
,
I
:
J
TO ���02 - � \
R634
56
f
- - - - -
__
I.O- e'"
AMPLFIER O U TP U .
FROM
VIDEO AMPLIFIER
(A4,
NOTES
-#
2. · OPTIMUM VALUE SELECTED AT FACTORY; AVERAGE VALUE
SHo,vN.
3 .
CABINET GROUND.
4. W
PRINTED CIRCUIT GROUND.
OTHERWISE
S.UNLESS INDICATED; RESISTANCE IN OHMS,
L - _ - _::J
6.
DENOTES REAR PANEL LOCATION.
N OT E :
THIS SCHEMATIC APPLIES TO SERIALS PREFIXED 322-, 40 1 -, 528-,
ASSEMBLY (03400-66504)
R607 R60S
R606
3300 8200 10K
C603 (,
�
eRGOf
0,1 -9.8V
0.1 RG03
6e
R604 R60S
oo
6800 6800
- 3.5V
R602
6eoo
Q603 -.67V
-.45V
CGOI C602
-.30V
50
10
CR603
+
-.13V
RGOI
R632 R631
-.29
33K 33K
�
C611 I
R635
0.01
2701( 8ao
C610
R630
10M (FREQUENCY STABILIZING FEEOBACK)
R633
leK
-
- -
-
�R
+ 75V FROM A7CIB(+)5
;';- O � OUPLE PAIR - ; A;" ' Of - - V -
I
I TC401
PRIMARY SIGNAL PATH .
AC FEEDBACK PATH.
DC FEEDBACK PATH.
CAPACITANCE IN MICROFARADS.
Model 3400A
714- ONLY.
a
O I RECT -COU LED
R616 P R617
E M ITTER
22K 1800
F O L LOWERS ::,s J �
FS!-J.OV
I/IOS�-0.15V
FS!-J.6V
P/O AS
PHOTOCHOPPER
ASSEMBLY
ro EMOOUlATO �
C6�5 0604
R625
1
6eK
+ 1
R619
,
,
292.4
R624 R620
C60S S8K 120K
10
+
: (tr : CRS04
C60e
0.01 3.9
, RSIO
390
R623
3
R622 RS21
3900
24.3
R615
33K
R609
56 77V
-+
- -
-
(FREQUENCY STABIUZING FEEDBACK)
TC402
I
(SUMMING FEEDBACK)
GNO
FROM A6-1 4
COPYRIGHT 1965 BY HEWLETT- PACKARD COMPANY
01768-1
Appendix C
- -
,
L�211 T _J
I -
- -
�
:
C609
100
MI
1 R5 R6
v
eo 30
FUll SCALE
AOJ
R3
I.SK *
CAL
I
CLR
I
+7SV
I
FROM
A7CIB(+)
RIO
36K
R9
470K
R7
0 1/10 200
SCALE
ADJ
Re
I 390 *
," ,
}
Figure C-l. Photochopper A5, Chopper
AmplUier A6. and Thermocouple
Pair {Part of A4} Schematic and

Parts Location Diagram

C-3/ C-4