Sharp SGH-C130 manual 10-2.RF, Egsm RX

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Flow Chart of Troubleshooting

10-2.RF

10-2-1. EGSM RX

NORMAL CONDITION catch the channel?

YES

②PAM100 CHECK pin12 ≥ -65dBm ?

YES

PAM100 CHECK

pin16 ≥ -65dBm ?

YES

F101 CHECK

pin3,4 ≥ -65dBm ?

YES

NO

NO

NO

NO

CHECK

ANT contact ?

PAM100,RFS100	③
resolder or change

PAM100

resolder or change

F101

resolder or change

CONTINUOUS RX ON

RF INPUT : 62CH

AMP : -50dBm

①

④U102 CHECK

pin21,22 ≥ -65dBm ?

YES

U102

pin 12,13,25,26,27:

2.8V ?

YES

U102 CHECK

pin 30,31 :

26MHz ?

Vp-p : 950mV?

YES

	NO
	NO		C105,C109,L104	⑤
			C105,C109,L104
			resolder or change

NO

U107 pinA13, C172	⑥
change or resolder

NO

OSC100	⑦
change or resolder

U102

pin 4,5,6,7 Vp-p : 120mV ?

YES

U107 CHECK!!

NO

⑧

U102 resolder or change

10-16

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

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Contents GSM Telephone Contents Reference data Safety Precautions Repair PrecautionESDElectrostatically Sensitive Devices Precaution Specification GSM General SpecificationGSM TX power class TX Power GSM900 Control levelProduct Function Main FunctionArray course control Downloading Binary Files Pre-requsite for DownloadingS/W Downloader Program Samsung Proprietary-Contents may change without notice Select theFlash&Verify Browse Case of C130 the reserved regions are -0x00fc0000 0x00ffffff#5002*8376263# Exploded View and Parts List Cellular phone Exploded ViewCellular phone Parts list BAG PE Disassembly and Assembly instructions DisassemblyHolding Front and pushing KEA PAD Assembly Assemble the LCD on the PCB Check Polarity Check the point Locking Screw up the Rear at 4 Points Main Electrical Parts List StatusChip CER,CHIP 2203-000254 R117 CER,CHIP SNA TA,CHIP Block Diagrams Block Diagrams PCB Diagrams PCB Diagrams Flow Chart of Troubleshooting Power onFlow Chart of Troubleshooting 10-2 10-3 10-4 Initial ENDFlow Chart of Troubleshooting 10-6 10-7 Sim Part ② ③ Microphone Part Flow Chart of Troubleshooting 10-11 Receiver Part Speaker PartFlow Chart of Troubleshooting 10-13 10-14 10-15 10-2.RF Egsm RX① ③ DCS RX 10-19 Egsm TX U107Flow Chart of Troubleshooting 10-21 DCS TX Continuous TX on ConditionFlow Chart of Troubleshooting 10-23 MAP001 Reference data Reference AbbreviateCode No. GH68-10807A 2006 . Rev.1.0