Sharp SGH-C130 manual Flow Chart of Troubleshooting, Power on

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10. Flow Chart of Troubleshooting

10-1.Baseband

10-1-1. Power ON

'Power On' does not work

Check the current consumption

Yes

	Current consumption					No
	>= 100mA
		Yes



	Check the Vbat Voltage
						No

	Voltage >=3.3V


		Yes



	Check the pin of U107

Download again

Charge the Battery

Pin#J12 >= 2.8V

Yes

No

Check U107 and C173

①

Pin#A13 and

pin#A14 =2.8V

Yes

Check the clock signal at pin#8 of U102

No	pin#G11 =	No
	1.8V
	Yes

③

Check U107 and C174

②

			Freq = 13MHz							No
			Vrms >=300mV
			Vrms >=300mV
			Vpp≒ 900mV
				Yes
				Yes

Check the initial operation
Check the initial operation



			END

Check the clock generation circuit

(related to OSC100)

10-1

④

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 Repair Precaution Safety PrecautionsESDElectrostatically Sensitive Devices Precaution GSM General Specification SpecificationTX Power GSM900 Control level GSM TX power classMain Function Product FunctionArray course control Pre-requsite for Downloading Downloading Binary FilesS/W Downloader Program Samsung Proprietary-Contents may change without notice Case of C130 the reserved regions are -0x00fc0000 0x00ffffff Select theFlash&Verify Browse#5002*8376263# Cellular phone Exploded View Exploded View and Parts ListCellular phone Parts list BAG PE Disassembly Disassembly and Assembly instructionsHolding 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 Status Main Electrical Parts ListChip CER,CHIP 2203-000254 R117 CER,CHIP SNA TA,CHIP Block Diagrams Block Diagrams PCB Diagrams PCB Diagrams Power on Flow Chart of TroubleshootingFlow Chart of Troubleshooting 10-2 10-3 10-4 END InitialFlow Chart of Troubleshooting 10-6 10-7 Sim Part ② ③ Microphone Part Flow Chart of Troubleshooting 10-11 Speaker Part Receiver PartFlow Chart of Troubleshooting 10-13 10-14 10-15 Egsm RX 10-2.RF① ③ DCS RX 10-19 U107 Egsm TXFlow Chart of Troubleshooting 10-21 Continuous TX on Condition DCS TXFlow Chart of Troubleshooting 10-23 MAP001 Reference Abbreviate Reference dataCode No. GH68-10807A 2006 . Rev.1.0