Samsung SP-C501R Service Manual

Also see for SP-C501R: User manual

Contents

－9－Samsung Electronics Co., Ltd Service ManualChapter 4. Test Mode Procedure SP-C501R－8－Samsung Electronics Co., Ltd Service ManualSP-C501R3.3 CAUSES FOR THE TROUBLE AND TROUBLESHOOTINGTroublesNot operable at allChannel is not capturedCommunication distance istoo shortCall path is not formedDialing is not availableRing tone does not soundTransmitting is notnormal (Remote set)Receiving is notnormal (Remote set)Is not chargeableCauses1. Defective power source (base)2. Battery is discharged (Remote)1. ID discord2. Defective transmitting/receiving data1. Antenna is open2. Defective transmitting power adjustmentDefective SPEECH IC(U500)Defective SPEECH IC(U500)Defective ring detector Circuit(PC201)1. Defective MIC2. Defective transmitting path1. Defective receiving unit2. Defective receiving path1. Defective battery2. Defective contact terminalTroubleshootingCheck the voltage of each end.Charge and/or replace the battery.Check the ID setting.Check the transmitting/receiving data pathRemove the cause of the trouble.Readjust the PWR adjustable resistanceCheck the speech IC (U500) andsurrounding circuitsCheck the DTMF pathCheck the ring detecting circuit andsurrounding circuitsReplace the MICCheck the transmitting pathReplace the receiving unitCheck the receiving pathReplace the batteryCheck the contact terminal4.1 BASE SET TEST MODE1) How to Enter the Test ModeYou may enter the test mode by shorting the test point of "Test Mode" with the adaptor connected tothe base and power supplied. Looping will be done according to the shorting times as follow:Test stand by status "Test Mode" TP: Short a time20 channels, TX Enable"Test Mode" TP: Short twice20 channels, TX Data "1" transmitting"Test Mode" TP: Short three times42 channels, RX Enable"Test Mode" TP: Short four timesReturns to the first stepPower OFF: Exit from the Test Mode