Circuit Diagrams; Schematic Notes - HP 400E Operating And Service Manual

Models 400E/400EL
7-1. INTRODUCTION.
7-2.
This section contains
component locator, and a
1 . PARTIAL REFERENCE DESIGNATIONS ARE SHOWN:
ASSEMBLY OR SUBASSEMBLY DESIGNA TION(S) OR BOTH FOR
COMPLETE DESIGNATION.
2. COMPONENT VALUES ARE SHOWN AS FOLLOWS UNLESS OTHERWISE
NOTED:
3. ---- - - -
DC
4. ALL VOLT AGES ARE
Q8 WHICH IS ±20%.
5. *"
AVERAGE VALUE SHOWN, OPTIMUM VALUE SELECTED AT FACTORY.
6. t
REFER TO BACKDATING CHANGES IN APPENDIX C.
&.!aJ
7. DENOTES WIRE COLOR USING STANDARD COLOR CODE.
(e.g. 918
-:!::-
8. DENOTES POWER LINE GROUND.
9.
�DENOTES CHASSIS GROUND.
W
10. DENOTES CIRCUIT GROUND (ASSEMBLY).
SECTION VII

CIRCUIT DIAGRAMS

a schematic diagram,
PC
board component
RESISTANCE IN OHMS
CAPACITANCE IN MICROFARADS
±
10% EXCEPT THE BASE AND EMITTER OF
WHITE, BROWN, GRAY)
=
layout to be used for maintenence and operation of
400
the EIEL.
7-3
An explanation of terms and symbols used as
reference designators is given
PREFIX WITH
DENOTES ASSEMBLY.
DENOTES MAIN SIGNAL PATH.
DENOTES MAIN FEEDBACK PATH.
Section VII
in
the Schematic Note s.
7-1