hp_8902a_serv维修手册含电器原理图ice_vol-3

Model 3902A08902-90031V3Volume 3 Table of ContentsVOLUME 3 TABLE OF CONTENTSSchematicTheory/Trouble-PartsAssemblyServiceBlockShootingListSheetDiagramPagePageNumberNumberNumberA1Keyboard and Display AssemblyKeyboard25BD58F-1776-5Displays26BD58F-1836-5Annunciators27BD58F-1876-5A2Audio Filters Assembly12BD48F-756-11A3Audio De-emphasis and Output Assembly13BD48F-816-15A4FM Demodulator AssemblyLimiters10BD38F-676-19Discriminator11BD38F-696-19A5Voltmeter AssemblyAudio Detectors14BD48F-896-23Voltmeter15BD48F-976-23A6AM Demodulator AssemblyALC Loop8BD38F-536-27Control Circuits9BD38F-636-27A10 Power Supply Regulators31,32BD58F-223,2276-33A11Counter AssemblyTime Base22BD58F-1536-37Counter23BD58F-1576-37A13 Controller Assembly24BD58F-1676-41A14 Remote Interface Assembly28BD58F-1916-45A15 RF Input Control Assembly4BD28F-176-47A16RF Detector Assembly4BD28F-176-49A17Input Mixer AssemblyBD28F-2708901-60145-(2305Ato2530A)6-5308902-60104-(2535 A and Above)6-57A18IF Amplifier Assembly5BD28F-276-61A19LO Divider Assembly17BD28F-1116-63A20LO Control Assembly08901-60185-(2305Ato2530A)Analog20BD28F-1336-69Digital21BD28F-1456-6908901-60262-(2535 A and Above)Analog20BD28F-1396-73Digital21BD28F-1496-73A21 Low Frequency VCXO Filter Assembly19BD28F-1296-77