Circuit Diagrams; Introduction - HP 652A Operating And Service Manual

6·1.

INTRODUCTION.

6-2. This section contains the circuit diagrams necessary for
operation and maintenance of the Model 652A. Figure 6·1
is
a block diagram which shows the overall relationship be·
tween the basic circuits of the inmurnent. Figures 6·2
JACK XA2 IS MOUNTED ON
CHASSIS OR ANOTHER ASSEMBLY
PI IS NOT MOUN TED
f��': l L:fi�'1�T�NATOR IS PI)
---- -* �('i�'-' -- -' ''( 4�----'
--1( �
__
'II / RE COLOR: COLOR CODE IS THE SAME
AS THE RESISTOR COLOR CODE. FIRST
NUMBER INDICATES BASE COLOR SECOND
NUM BE:R INDENT/FIES WIDER STRIP. AND
THE THIRD INDICATES THE NARROWER
STRIP. ( � DENOTES WHT/RED/YEL WIREJ
PARTIAL R EFERENCE DESIGNATIONS A R E SHOWN: PREFIX WITH ASSEMBLY OR SUBASSEMBLY
1 .
PARTIAL REFERENCE DESIGNATIONS ARE SHOWN.
OR SUBASSEMBLY DESIGNATION(S) OR BOTH FOR COMPLETE DESIGNATION.
2.
COMPONENT VALUES ARE SHOWN AS FOLLOWS UNLESS OTHERWISE NOTED.
RESISTANCE IN OHMS
CAPACITANCE IN MICROFARADS
----
3.
DENOTES ASSEMBLY.
4.
5 .
6.
c:=J
DENOTES FRONT PANEL MARKING.
�
7.
DENOTES SCREWDRIVER ADJUST.
0
S.
DENOTES FRONT PANE L CONTROL.
SECTION VI

CIRCUIT DIAGRAMS

R E F E R E N C E D E S I G N A T I O N S
ASSEMBLY
REFERENCE ASSEMBLY
DESIGNATION NAME (INCLUDES A2AI SUBASSEMBLY)
POWER SUPPLY (OQXXX- 66501)
PLUG PI /S MOUNTED ON ASSEMBLY OR IS PART
OF THE ASSEMBLY BOARD (COMPLETE DESIGNATOR IS A2P/)
YV
I
R 3
, I
, I COMPLETE DESIGNATOR IS A2R4
..Y'V'
R4
: I
PIN OF XA2 AND PI
fP
HOTO-CHOPPER OSC
:
I I f
I
.
I �
EYELET OR STAND- I
OFF TERMINAL, MAY OR
I
MAY NOT 8£ NUMBERED
I
I
8
DESIGNATION(S) OR BOTH FOR COMPLETE DESIGNATION
N o m
PREFIX WITH ASSEMBLY
through 64 contain the detailed schematic diagrams as well as
component location drawings of each printed circuit board and
the two rotary switches.
An
6·3. explanation of terms and symbols used as refer­
ence designators is given below.
ASSEMBLY
PART NUMBER
- - ---
TEST VOLTA GE �
01
+2�92V
-
!
I I
FRF � I
MALE STAND
R2
PIN CONNECTOR
I
MAY OR MAY
NOT BE NUMBERED
COMPLETE
I
DESIGNATOR
IS A2AIRI
*
9.
DENOTES POWER LINE GROUND.
....
10.
DENOTES CHASSIS GROUND.
1 1 .
W
DENOTES CIRCUIT GROUND. (ASSEMBLY)
12.
*
AVERAGE VALUE SHOWN, OPTIMT.,. 'M VALUE SELECTED AT FACTORY,
COMPONENT MAY BE ABSENT.
13.
0
DENOTES GROUND CONNECTION MADE WITH ASSEMBLY MOUNTING
SCREWS IN PLACE.
14.
DENOTES SHIELDill G BEAD.
15.
REFERENCE DESIGNATORS PRINTED IN RED Il'. 'DICATE BACKDATING
CHA.;. "l'GES (SEE APPKNDIX C).
16. �
DENOTES WIRE COLOR. CODE IS SAM:E AS THE RESISTOR COLOR CODE
e. , 9 white, 8 gray, 4
(1.
= =
1
- -
DENOTES SIGNAL
I
I
DENOTES s
ON WHICH CONNECTION
1$ MADE
I
I
�
�
,ff;
F£MALE PIN
CONN, - CTOR ON·
A WHT/RED WIRE
yellow).
6·1/6-2
, � f':r.tinn VT