LBI-31511BPrinted in U.S.A.TABLE OF CONTENTSPageDESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST CABLE TRANSMITTER ALIGNMENT19C850590G1(19C850593, Rev. 4)SYNTHESIZER AND TRANSMITTER ALIGNMENTTEST EQUIPMENT REQUIRED1. Watt meter, 50 ohm (capab
TRANSMITTER ALIGNMENTSYNTHESIZER & TRANSMITTER ALIGNMENTEXCITER TRANSMITTER POWER AMPLIFIERPreset all four tuning screws in the exciter (C8-C11) s
RECEIVER FREQUENCY ADJUSTMENT(Refer to Transmit Frequency Adjustment, no adjustment ofreceive frequency is required.)ALTERNATE IF SWEEP ALIGNMENT1. At
RECEIVER ALIGNMENT(Cont.)RECEIVER ALIGNMENTTEST EQUIPMENT REQUIRED (Or Equivalent)1. GE Test Set 4EX3A11, 4EX8K12, or 20,000 ohms-per-volt millimeter
STEPMETERING POSITIONTUNINGCONTROLMETERREADINGPROCEDUREGE TESTSETMULTIMETER (- TO A-)FIXED SQUELCH ADJUSTMENT (8 dB SINAD) (EARLIER MODELS)11. R666 Ad
(19D901350, Sh. 1, Rev. 10)RECEIVER AUDIO AND SQUELCH WAVEFORM CHECKSLBI-31511 LBI-3151114
(19D900977, Sh. 1, Rev. 20)MECHANICAL LAYOUTLBI-31511 LBI-3151115
(19D900977, Sh. 2, Rev. 14)MECHANICAL LAYOUTLBI-31511 LBI-3151116
(19D900980, Sh. 1, Rev. 4)INTERCONNECTION DIAGRAMLBI-31511 LBI-3151117
TRANSMITTER ADJUSTMENTThe adjustment for the transmitter includes measuring theforward and reflected power and adjusting the antenna length foroptimum
• To replace TRS board:1. Perform above procedures in reverse order.• To remove the PA board:1. Remove the three retaining screws (G) securing thePA f
MICROCOMPUTER SOFTWARE (U705)The latest software package is a 19A703244P23 or a19A703868G5; replacing the following packages: Narrowband Wideband19A70
TROUBLESHOOTING PROCEDURESIGNAL INDICATION VOLTAGE LEVELCASRUSSq Dis, InputCCT Sq Dis, InputTX EnablePTT, InputHigh LevelLow LevelHigh Level (RX Un-sq
TROUBLESHOOTING PROCEDURENOTERegulated +5 Vdc and +9 Vdc can be opened by P701 thru P705 to facilitate troubleshooting.POWER AMPL METERING J1PA JACK R
TEST PROCEDUREThese Test Procedures are designed to help you to servicea receiver that is operating -- but not properly. The problemsencountered could
TRANSMITTER ALIGNMENTBefore bench testing the radio, be sure or the output voltage characteristics of your bench power supply.To protect the transmitt
TRANSMITTER FREQUENCYADJUSTMENTFirst check the frequency to determine if any adjustmentis required. The frequency should be set with a frequencymeter
Comments to this Manuals