HP 5245L Service Manual

Also see for 5245L: Quick start guide

,. \_Model 5245L02349- 10524 5-6- r2Section VICheck A23Q9, Q10 andPut A23 on + 12VExtender ChkCollector A23Q3LY/cm, .1 lts/cm Figure 7-20 - 13VGate Light OnLeft DCA countsat steady 10 secrateCheck SampleA23Q3, Q4, Q6Figure 7-20_C&A@heck Steering AmPlifiersSwitch to frequency1 /-rs, remove A23,observe Gate Light& ReadoutGate Flip-Flop Ckt22Q2, Q3, Q4, Q5, Q6Figure 7 -Lg5Y /cmL 1ts/cmCheck at A22(4)Figure ?- 19signal weak or absentOFF Gate Light offNo Count Check Trigger AmPlifierckt A22Q1Srvitch to 10 PeriodAverage; Observe Figure 7- 19Check A21Q2 Gate 3,A21CR6, CR12, A35LA(FU & 11) A1S1A(R+ &R2+) A3s1c (Re & 5)(cont'd from p. 6-11)Flashingsignal weakor absentCheck Gate 12 CktA21CR15 & A3S1A 2e4) Check signal atFigure ?- 18Figure ?- 18Check Pulse Amplifierckt A21Q13Check A1?lr@igure 7- 13 Figure ?- 18signal weak or absentCheck signal at Check CollectorA21Q9 Check Main Gate CktFigure 7- 18(cont'd fromp. 6- 11)Figure ?- 18 Ql2signal weakor absent or absentFigure ?- 18Check Frequency Trig-ger Ckt A21Q3, Q4Figure 7- 18Check signal at A21(27)Figure ?- 18signal weak or absentCheck Gate Amplifierckt A22Q7signal weak or absentGate LightReplaceCheck sFigure ? - 19Emitter A21Q2Check Period TriggerCKt A21Q5, Q6Check CollectorA21(2e) A21Q10, Ql1Check EmitterA21Q1Figure 7- 18Figure ?-19Check EmitterFollower A21Q1Figure 7 - 186-L3 /6-14