Sharp SGH-C130 manual Egsm TX, U107

Page 54

Flow Chart of Troubleshooting

10-2-3. EGSM TX

①	PAM100 pin12	NO	PAM100	NO
	: about 2~3		PAM100
	: about 2~3		pin6 : 2.8 V?
	dBm?

YES

YES

③ check&changeC199,RFS100

U107

check & change

②

CONTINOUS TX ON CONDITION

TX POWER DAC: 600 CODE APPLIED

CH : 62

RBW : 100KHz

VBW : 100KHz

SPAN : 10MHz

REF LEV. : 10dBm

ATT. : 20dB

PAM100		NO		BATTERY
pin7 : 3.7	V?			check & change

	YES
	PAM100	NO	R118
	PAM100		R118
	pin 8 : 1.6V ?		Check
	YES
NO	PAM100 pin11
	about : -5dBm
	?
	YES
	PAM100	NO
	pin 4 : 2.9V?
	YES
	PAM100	U107
	change or resolder	check
	NO	U102		⑤
		pin12,13,25,26,		⑤
		28 : 2.8V ?
			YES
				U102

NO

	U107			pin30,31 :
	pinA13,C172			26MHz ?
⑥ change or resolder				Vp-p : 950mV?
					YES
			NO	U102
				pin4,5,6,7:100m
				V?
					YES
					YES

U107
U107
change or resolder		U102
		change or resolder

OSC100 change or resolder

⑦

10-20

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Image 54

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