Samsung SCH-210 service manual.pdf - Free

Circuit DescriptionENVIRONMENTAL SPECIFICATIONTemperature-Operating temperature : 0 o C ~ 50 o C-Storage temperature : -20 o C ~ 105 o CHumidity-Operating humidity : 5% ~ 90%-Storage humidity : 5% ~ 95%CLC FUNCTIONProtection circuitProtection circuit keeps against electronic stresslike over current, and inputting polarity powerpromptly in case of occurring unexpectedsituation in CLC unit source power.Function of confirming mobile phoneinstallationFunction of confirming proper charge processwith turning on lamp in CLC which is connectedwith Cellular Phone.Green : Full chargeRed : Being chargeFunction of confirming battery installationFunction of confirming battery installation incellular phone, then control the CLC activation.Function of auto power onFunction of turning on Cellular Phoneautomatically with inserting CLC interface jackinto the phone.POWER CIRCUIT OF CHARGE FOR HHPPOWER & BATTERYThis Switching Regulator produces needed powerfor charging HHP power & battery, supplied U1,D1, D2, C1, C2, L1, R25 from Cigar Lighter jack ofautomobile.CONFIRMING CIRCUIT OF EXISTINGBATTERY OR NOTU3A reads separated voltage between resistancebattery C/F and R20, controls no. 5 pin of U1through reference voltage and comparator thendecides to produce Vcc or not.CHARGE CURRENT CONTROL CIRCUITU2A, U4, Q1 and side circuit detects R4’s flowingcurrent, controls no. 5 pin of U1 then chargecurrent and charge voltage.LED ACTIVATING CIRCUITLED activating circuit compares to voltagedifference between R4 source and D4 PROP,controls Q3, Q4 through U2B comparator for Q6and side circuit, then activates LED.AUTO POWER ON CIRCUITQ9, Q10 and side circuit makes power on thecircuit allowed Vcc power to no. 9 HHP pin(poweron) by turned on Q9, following up the producingVcc.CONNECTION OF CLC, CURL, AND CABLE6-9-2 Circuit description of SCH-210CLCPOWER SUPPLYThis circuit supplies HHP & battery with powerreceived from Cigar Lighter jack of automobile.Pin no (CLC) Description Pin no (HHP)#1 HP-PWR 9#2 V-BAT 12/13/16#3 V/F N.C#4 C/F 3#5 GND 2/4/66-16 Samsung Electronics - Contents may change without notice.