HP MODEL 206A Operating and service manual
Audio Signal Generator
Serial 1223 and Above
Edition 206A002

English language, 48 pages

Seamless scans
text 150dpi, images and schematics 300dpi, grayscale, lossless LZW tiff scans, lossless ZIP PDF compression, 21 MBytes

Retouched and normalized, print ready.


Table of Contents:
Section I, GENERAL DESCRIPTION
1-1 General 1-1
Section II, OPERATING INSTRUCTIONS
2-1 Inspection 2-1
2-2 Controls and Terminals 2-1
2-3 Operation 2-3
Section III, CIRCUIT DESCRIPTION
3-1 General 3-1
3-2 Oscillator 3-1
3-3 Selective Amplifier 3-2
3-4 Output Amplifier 3-3
3-5 Voltmeter 3-3
3-6 Attenuator 3-3
3-7 Impedance-Matching Transformer 3-3
3-8 Power Supply 3-4
Section IV, MAINTENANCE
4-1 Cover Removal 4-1
4-2 Tube Replacement 4-1
4-3 Replacement of Lamp R13 4-2
4-4 Variable Resistors 4-2
4-5 Capacitor Drive 4-3
4-6 Adjustment of Regulated Power Supply Voltage Level 4-3
4-7 Adjustment of Oscillator Output 4-3
4-8 Adjustment of Selective Amplifier Gain 4-3
4-9 Adjustment of Hum Balance 4-4
4-10 Calibration of Voltmeter 4-4
4-11 Adjustment of Output at 600G 4-5
4-12 Adjustment for Centering Selective Amplifier Output Level 4-5
4-13 Recalibration 4-6
4-14 Lubrication of Tuning Capacitor Drive Assembly 4-6
Section V, REPLACEABLE PARTS LIST 5-1