HP 8414A Operating And Service Manual page 67

Section VIII
Service
Model 8414A
SCHEMATIC DIAGRAM NOTES
Refer to MIL Std 15B for Symbols Not Shown
Resistance is in ohms and capacitance is in microfarads unless otherwise noted.
P/O = part of.
* Asterisk denotes a factory-selected value. Value shown is typical. Capacitors
may be omitted or resistors jumpered.
& Screwdriver adjustment.
O
Panel control.
Encloses front panel designations. £_J Encloses rear panel designation.
o
cz>
©
0
Circuit assembly borderline.
Other assembly borderline.
Heavy line with arrows indicates path and direction of main signal.
Heavy dashed line with arrows indicates path and direction of main feedback.
Wiper moves toward CW with clockwise rotation of control as viewed from shaft
or knob.
Numbers in circles on circuit assemblies show locations of test points.
Encloses wire color code. Code used (MIL-STD-681) is the same as the resistor
color code. First number identifies the base color, second number the wider
stripe, and the third number identifies the narrower stripe. E.g., (947) denotes
white base, yellow wide stripe, violet narrow stripe.
Voltage regulator (breakdown diode).
Denotes Field Effect transistor (FET) with N-type base.
Denotes FET with P-type base.
Denotes Capacitive diode (Varicap, varactor).
Denotes Silicon Controlled Rectifier.
P-Type Metal Oxide Substrate FET (MOSFET)
N-Type Metal Oxide Substrate FET (MOSFET)
8-6
Figure 8-3. Schematic Diagram Notes