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2. Specification2-1. GSM General Specification.......................................................................................2-12-2. GSM Tx Power Class...............................................................................................2-2
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Main Electrical Parts List
6-8
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7. Block Diagrams
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Block Diagrams
7-2
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8. PCB Diagrams
8-1
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Top
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PCB Diagrams
8-2
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Bottom
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9. Flow Chart of Troubleshooting
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9-1
9-1. Power On
Check the Battery Voltageis more than 3.4V
' Power On ' does not work
Change the Battery
END
No
Yes
C512 = 2.7V? Check the PMU related to the ISUPNo
Yes
Check the Clock atR504=32KHZ
Resolder X500No
Yes
C532 (VDD1) = "H"? Check the VDD1 circuitNo
Yes
C531(VDD2) & C533(VDD3)= 2.85V?
Check the VDD2,VDD3 circuitNo
Yes
Check for the clock at C121= 13MHz
Check the clock generation circuit
(related to U100)
No
Yes
Check the initial operation
Yes
Yes
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Flow Chart of Troubleshooting
9-2
Power On
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Flow Chart of Troubleshooting
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9-3
9-2. Initial
R302 (RSTON) ="H"?
Initial Failure
Check the circuit related to reset
END
No
Yes
Is U400 Pin(memory CE) OK?
Yes
Yes
No
Check the U400
Check the circuit aroundLCD & U400 (Short or not solder)
Yes
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Flow Chart of Troubleshooting
9-4
Initial
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Flow Chart of Troubleshooting
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9-5
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Flow Chart of Troubleshooting
9-6
9-3. Charging Part
Check the U505 pin 1> 4.9V
Abnormal charging part
END
No
Yes
U505 pin 7 = "H"?No
Yes
Check the U505 pin8≒ 4.2V
No
Yes
Check the the circuit related to
+DCVOLT
Resolder or replace U505
Check the circuit related to
CHG_ON signal
Yes
U505 pin 4 = "L"?
Yes
No
Resolder or replace U505
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Flow Chart of Troubleshooting
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9-7
Charging
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Flow Chart of Troubleshooting
9-8
9-4. Sim Part
CN500 pin 1,5 = "H"?
Phone can't access SIM Card
Check the sim charge pump
Check the SIM Card
END
No
Yes
Yes
Yes
No
Check the 32k OSCAfter Power ON,
Check SIMCLK Signal on CN500pin3 in a few second
Yes
No
Replace PBAAfter SIM card insert,
CN500 pin 2 = "H(SIM_RST)"?
Yes
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Flow Chart of Troubleshooting
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9-9
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Flow Chart of Troubleshooting
9-10
9-5. Microphone Part
Check the connectionfrom MIC
Check the circuitfrom U300 to MIC
Resolder MIC
Resolder the R605, R606, R609, R610, L602,
L603, C606 and C610
END
No
Yes
Yes
Yes
Yes
No
Check the MIC
No
Replace the MIC
Microphone does not work
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Flow Chart of Troubleshooting
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9-11
Microphone
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Flow Chart of Troubleshooting
9-12
9-6. Speaker Part(Melody)
U801 pin 5 = 2.85V?
Speaker does not work
Check the Clock signal atpin1(CLKI) ofU800(13MHz)
Check the clock generation circuit(related to OSC101 and U800)
END
No
Yes
No
Resolder or replace U801
C809 & C810 AroundU800 ≒ 1.8V?
(When U800 operate)Resolder U800
Yes
No
is Speaker Contact inproper position? Check the speaker Contact
Yes
No
Is Speaker working?
No
Yes
Change the Speaker
Yes
Yes
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Flow Chart of Troubleshooting
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9-13
Speaker
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Flow Chart of Troubleshooting
9-14
9-7. Key Data Input
When one of the keys ispushed,
is it displayed on LCD?
Check the Dome sheet & Key rubber
END
No
Yes
Yes
Check Initial Operation
When one of the keys ispushed,
KBIO signal is OK?
Replace the PBA
No
Yes
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Flow Chart of Troubleshooting
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9-15
9-8. Receiver Part
U600 pin11 = L duringcall established?
Ceck U600
END
No
Yes
Yes
Receiver does not work
Is Receiver working? Replace the Receiver
No
Yes
No
Resolder or replace U600
Yes
U600 pin 4, 16 = 1.5?
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Flow Chart of Troubleshooting
9-16
9-9. LCD Part (for Color Main )
Is LCD Contrast set on highlevel in the Menu?
Set LCD Contrast on high level
END
No
Yes
Yes
LCD does not work
SOC700 pin 29, 30 = 2.8V? Resolder LCD module
No
Yes
F703 pin 3, 4, 5, 6 is OK? Check the U401
No
Yes
Yes
Replace the LCD Module
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Flow Chart of Troubleshooting
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9-17
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Flow Chart of Troubleshooting
9-18
9-10. Key Back Light
C530 = "H"? Check the PMU related to "VDD_KEY"
END
No
Yes
Key Backlight does not work
Yes
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Flow Chart of Troubleshooting
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9-19
9-11. Camera part
Reconnect the camera moduleNo
Yes
Camera function does not work
Yes
Check the Camera
connector on PCB
HDC700 C718
=2.8V?
Yes
Resolder U401No
Check U801(pin2, pin4) related to26MHz and R812
No
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Flow Chart of Troubleshooting
9-20
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Flow Chart of Troubleshooting
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9-21
9-12. GSM Receiver
MODULE200 Pin8>= -65dBm Resolder CN201, C209
END
No
Yes
RX ONRF input : CH center freq
Amp : -50dBm
Check MODULE200pin9=L,pin12=L
MODULE200 pin5,6>= -65dBm
U100pin32 >= -70dBmpin33 >= -70dBm
U100 pin6, 7, 8, 9>= 1V
Check ANT Switchcontrol circuit
Resolder MODULE200
Resolder C101, L105, L106
Check U100pin10,22,28 >=2.7Vpin20 >=4.0V
Check & ResolderRF PMU Part
Check &ResolderU100, RF26MHz part,
R100, R101
R110,R113,R114,R115 >= 1V
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No No
No
Check U300
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Flow Chart of Troubleshooting
9-22
9-13. GSM Transmitter
TX ON (5Level)
MODULE200 Pin8>= 20dBm
Yes
Resolder CN201, C209
No
Check MODULE200pin9=H,pin12=L
Changeor Resolder MODULE200
MODULE200 Pin11>= 20dBm
YesYes
NoNo Check ANT Switch
control circuit
Yes
Resolder C217, C219, L216MODULE200 Pin11>= 20dBm
Check U200+VBATT(pin17) OK?
No
Resolder or change U200or check PAM control
signal
YesYesMODULE200 Pin11>= 3dBm
No
Check +VBATT
No
OSC100 pin1>= 6Bm Resolder R206
Yes
No
Check & ResolderRF PSU part
Check U100pin4 >= 4.0V
pin22, 28 >= 2.7V
U100 Pin6, 7, 8, 9>= 500mV
Yes Yes
No
Resolder U100or check Txcpo(R112)
No
Check U300
END
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Flow Chart of Troubleshooting
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9-23
9-14. DCS Receiver
RX ONRF input : CH center freq
Amp : -50dBm
MODULE200 Pin8>= -65dBm
MODULE200 Pin1,2>= -65dBm
U100Pin38>=-70dBmPin39>=-70dBm
U100 pin6, 7, 8, 9>= 1V
Yes
Yes
No
Resolder CN201, C209
No
Yes
No
Resolder MODULE200
Check ANT Switchcontrol circuit
Check MODULE200pin9=L,pin12=L
Yes
Yes
Resolder L107, L108, L104No
Check U100pin22,28 >= 2.7Vpin4 >= 4.0V
Check & ResolderRF PSU Part
No No
Check & ResolderU100, RF26MHz part
R100, R101
Yes
Yes
R110,R113,R114,R115 >= 1V
Yes
Check U300
END
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Flow Chart of Troubleshooting
9-24
9-15. DCS Transmitter
TX ON (0Level)
Resolder C219, L216, C217
Check ANT Switchcontrol circuit
Changeor Resolder MODULE200
YesResolder CN201, C209
END
Check U300
U100 Pin6, 7, 8, 9>= 500mV
OSC100 pin5>= 6Bm
U200 Pin3>= 3dBm
U200 Pin15>= 20dBm
MODULE200 Pin13>= 20dBm>= 20dBm
MODULE200 Pin8>= 20dBm
No
Check MODULE200pin9=L,pin12=H
YesYes
NoNo
Yes
No
Check U200+VBATT(pin17) OK?
YesYes Resolder or change U200or check PAM control
signal
NoNoCheck +VBATT
YesResolder R205
No
Check U100pin4 >= 4.0V
pin22, 28 >= 2.7V
YesYesCheck & ResolderRF PSU part
NoNo
Resolder U100or check Txcpo(R112)
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Flow Chart of Troubleshooting
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9-25
9-16. PCS Receiver
RX ONRF input : CH center freq
Amp : -50dBm
Check ANT Switchcontrol circuit
Changeor Resolder MODULE200
Resolder CN201, C209
MODULE200 pin3,4>= -65dBm
MODULE200 Pin8>= -65dBm
Yes
No
Yes
Check MODULE200pin9=L,pin12=L
NoNo
YesYes
U100 Pin35,36>= -70dBm
NoResolder L101, L103, L102
Yes
Check U100pin4 >= 4.0V
pin22, 28 >= 2.7V
U100 Pin 6,7,8,9>= 1V
NoCheck & ResolderRF PSU part
Check & ResolderU100, RF 26MHz part,
R100, R101R110,R113,R114,R115 >= 1V
Yes
Check U300
END
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Flow Chart of Troubleshooting
9-26
9-17. PCS Transmitter
TX ON (0Level)
Resolder U100or check Txcpo(R112)
Check & ResolderRF PSU part
Check U100pin4 >= 4.0V
pin22, 28 >= 2.7V
Resolder R205
Check +VBATT
Check U200+VBATT(pin17) OK?
Resolder or change U200or check PAM control
signal
Resolder C219, L216, C217
Check ANT Switchcontrol circuit
Changeor Resolder MODULE200
YesResolder CN201, C209
END
Check U300
U100 Pin6, 7, 8, 9>= 500mV
OSC100 pin5>= 6Bm
U200 Pin3>= 3dBm
U200 Pin15>= 20dBm
MODULE200 Pin13>= 20dBm
MODULE200 Pin8>= 20dBm
No
Check MODULE200pin9=L,pin12=H
YesYes
NoNo
Yes
No
YesYes
NoNo
Yes
No
YesYes
NoNo
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Flow Chart of Troubleshooting
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9-27
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Flow Chart of Troubleshooting
9-28
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Flow Chart of Troubleshooting
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9-29
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Flow Chart of Troubleshooting
9-30
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10. Reference data
10-1
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Reference Abbreviate
― AAC: Advanced Audio Coding.
― AVC : Advanced Video Coding.
― BER : Bit Error Rate
― BPSK: Binary Phase Shift Keying
― CA : Conditional Access
― CDM : Code Division Multiplexing
― C/I : Carrier to Interference
― DMB : Digital Multimedia Broadcasting
― EN : European Standard
― ES : Elementary Stream
― ETSI: European Telecommunications Standards Institute
― MPEG: Moving Picture Experts Group
― PN : Pseudo-random Noise
― PS : Pilot Symbol
― QPSK: Quadrature Phase Shift Keying
― RS : Reed-Solomon
― SI : Service Information
― TDM : Time Division Multiplexing
― TS : Transport Stream
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Reference data
10-2
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