Sanyo FXD-780GDSS Service Manual

Also see for FXD-780GD: Operating instructions

Contents

Sanyo FXD-780GDSS Service Manual Manual pdf 6 page image

— 4 —ELECTRICAL ADJUSTMENTSALIGNMENT OF FM RF & IF SECTIONSet the radio for FM reception. FM signal generator should be coupled with antenna receptacle, through dummy.FM SG&STEREO SGSETT.PDISTORTION METERAC VOLTMETERVTVM*1 Refer to “DUMMY BOX SCHEMATIC” (Page 10) Fig.11-2*2 Refer to “DUMMY BOX SCHEMATIC” (Page 10) Fig.11-3FMDUMMYANTENNADUMMYLOAD &SW BOX*1 *2Fig. 4 * SG frequency should be as accurate as possible.STEP12345677*RDSGENERATORFREQUENCYNon-Mod.Non-Mod.98.1MHz1kHz, 22.5kHz dev.SG att:66dBμ EMF98.1MHz1kHz, 22.5kHz dev.SG att:6dBμ EMF98.1MHz1kHz, 22.5kHz dev.SG att:6dBμ EMF88.5MHz107.9 (108)MHzSG att:6dBμ EMF98.1MHzSG att:25dBμ EMF98.1MHz1kHz, 22.5kHz dev.SG att:33dBμ EMFRADIO DIALSETTING87.5MHz107.9MHz108MHz98.1MHz98.1MHz88.5MHz87.5MHz107.9 (108.0)MHz98.1MHzTEST MODE *298.1MHzTEST MODE *2OUTPUTINDICATORDC VTVM to testpoint VTDC VTVM to testpoint VTAC VTVM to testpoint*AC VTVM acrossspeaker or 4 ohmsloadAC VTVM acrossspeaker or 4 ohmsloadAC VTVM acrossspeaker or 4 ohmsloadAdjust so that the“ST” mark of LCDDisplay appearsAdjust like to appearfor 0.95 of LCDDisplayADJUST-MENT—L103FM OSCL110FM DETL107FM MIXL110FM ANTL102FM RFL100FM ANTL102FM RFR129FM SDR204REMARKSCheck the voltage over than1.1 V.Adjust for 6.9±0.1VNULL VOLTAGE to become-20±20mV.Adjust for Maximum output Level.Adjust for Maximum output Level.Check for SPEC.Sensitivity of the seeking fre-quency.Sensitivity of the S meter.*1 : Perform step 6 after MPX adjustment of the following page (page 6).*2 : Setting up TEST MODE at page 7.