Samsung SGH-Q105 Service Manual
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Samsung SGH-Q105 Service Manual

Samsung SGH-Q105 Service Manual

Gprs gsm telephone
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Download this manual See also: User Manual
SERVICE
GPRS GSM TELEPHONE
G H I
P Q R S
Sh ift
C
D E F
A B C
M N O
JK L
W XY Z
TU V
Sp ac e
Ne xt
GPRS GSM TELEPHONE
SGH-Q105
Manual
CONTENTS
1. Electrical Parts List
2. Exploded Views and Parts List
3. Block Diagrams
4. PCB Diagrams
5. Flow Chart of Troubleshooting and
Circuit Diagrams

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Summary of Contents for Samsung SGH-Q105

  • Page 1 GPRS GSM TELEPHONE SGH-Q105 SERVICE Manual GPRS GSM TELEPHONE CONTENTS 1. Electrical Parts List 2. Exploded Views and Parts List 3. Block Diagrams 4. PCB Diagrams 5. Flow Chart of Troubleshooting and Circuit Diagrams D E F A B C...
  • Page 2 Level SEC Code Design LOC DESCRIPTIONS GH92-00976A - PBA MAIN-SGHQ105;SGH-Q105, LA, US A, -, -, -, -, -, - 3002-001103 AU501 BUZZER-MAGNETIC;93dB, 3.6 V, 90 m A, 2, 550Hz, BK 2404-001134 C1001, C1002, C1003 C-T A, CHIP;100 uF, 20 %, 6.3 V, LZ, TP, 4028 2203-001239 C1005, C1015, C1023 C-CERAMIC, CHIP;0.082 nF, 5 %, 50 V, NP0, TP, 1005...
  • Page 3 C-CERAMIC, CHIP;0.027 nF, 5 %, 50 V, NP0, TP, 1005 2203-000359 C925 C-CERAMIC, CHIP;0.15 nF, 5 %, 50 V, NP0, TP, 1005 2203-000438 C929, C930, C931, C939 C-CERAMIC, CHIP;1 nF, 10 %, 50 V, X7R, TP, 1005, - SAMSUNG Proprietary-Contents may change without notice...
  • Page 4 FILTER-SAW;942.5 MHz, 35 MHz, +-17.5 MHz/1.7 dB, TP, +-17. 2904-001226 F901 FILTER-SAW;942.5 MHz, 35 MHz, 925-960 MHz/2 dB, TP, 925-96 2904-001320 F902 FILTER-SAW;225 MHZ, 60 MHZ, -, TP, -, - 2904-001329 F903 FILTER-SAW;1.8425GHz, -, 1805-1880MHz/1dB, TP, 1805-18 SAMSUNG Proprietary-Contents may change without notice...
  • Page 5 TR-DIGITAL;RN1104, NPN, 100 mW, 47K/47K, SSM, TP 0501-002011 Q301, Q502 TR-SMALL SIGNAL;2SD2114K, NPN, 200 mW, SOT-23, TP, 8 0501-000162 Q302, Q501 TR-SMALL SIGNAL;2SA1576, PNP, 200 mW, SOT-323, TP, 180-3 0504-000167 Q503 TR-DIGITAL;RN1102, NPN, 100M W, 10K/10K, SSM, TP SAMSUNG Proprietary-Contents may change without notice...
  • Page 6 R-CHIP;150 kohm, 5 %, 1/16 W, D A, TP, 1005 2007-000140 R326, R328, R330, R334 R-CHIP;1 kohm, 5 %, 1/16 W, D A, TP, 1005 2007-007771 R332, R409, R410, R510 R-CHIP;0 ohm, 5 %, 1/16 W, D A, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 7 R-CHIP;6.8 kohm, 5 %, 1/16 W, D A, TP, 1005 2007-000172 R927, R930, R941, R945 R-CHIP;10 ohm, 5 %, 1/16 W, D A, TP, 1005 2703-001733 R933 INDUCTOR-SMD;8.2 nH, 5 %, 1 x 0.5 x 0.5 mm SAMSUNG Proprietary-Contents may change without notice...
  • Page 8 VARISTOR;5.6 V, 20 A, 1 x 0.5 x 0.6 mm, TP 1405-001082 ZD402, ZD403, ZD404 VARISTOR;5.6 V, 20 A, 1 x 0.5 x 0.6 mm, TP 1405-001082 ZD405 VARISTOR;5.6 V, 20 A, 1 x 0.5 x 0.6 mm, TP SAMSUNG Proprietary-Contents may change without notice...

  • Page 9: Cellular Phone Exploded View

    2. SGH-Q105 Exploded View and its Parts List 2-1. Cellular phone Exploded View 14-1 SAMSUNG Proprietary-Contents may change without notice...
  • Page 10 SGH-Q105 Exploded view and its Part List 2-2. Cellular phone Parts List (Sliver) DESCRIPTION SEC.CODE REMARK FRONT COVER ASS’Y GH75-01309A FRONT PIECE GH72-01195B LCD WINDOW GH72-01201A FLIP COVER (NO BADGE) GH72-01199E SIDE KEY ASS’Y GH75-00640A KEY PAD GH72-01494B BUZZER HOLDER...
  • Page 11 SGH-Q105 Exploded view and its Part List 2-3. Test Jig (GH80-00325A) Data Cable SWITCH MODE POWER DEBUG DEBUG HIGH CONNECT HIGH CONNECT 2-4. Test Cable (GH39-00061A) SAMSUNG Proprietary-Contents may change without notice...
  • Page 12 3. SGH-Q105 Block Diagrams 3-1. RF Solution Block Diagram SAMSUNG Proprietary-Contents may change without notice...

  • Page 13: Base Band Solution Block Diagram

    SGH-Q105 Block Diagrams 3-2. Base Band Solution Block Diagram SAMSUNG Proprietary-Contents may change without notice...
  • Page 14 C108 R512 C1001 R502 R516 R503 ZD308 R504 U 5 0 2 C126 Q503 R510 Q205 C509 C621 C 1 1 0 C119 CN601 C620 R223 C619 R110 R118 R117 C121 C618 Q101 C617 SAMSUNG Proprietary-Contents may change without notice...
  • Page 15 C801 C805 C732 R307 R601 C914 U701 R1019 C710 R945 R901 C712 C972 C902 CN801 C901 R729 C316 C719 F1003 F1004 F902 R732 L304 C726 C724 C720 R930 C962 C1050 C721 C910 R317 C909 C310 SAMSUNG Proprietary-Contents may change without notice...

  • Page 16: Circuit Diagrams

    5.SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagrams 5-1. Power ON ‘POWER ON’ does not work Check the current Download again consumption more than 100 mA Check the Battery Voltage more Charge the Battery than 3.3V Check the pin Check U101 and C112 4 of U101 is more than 2.85 V...
  • Page 17 SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-2. Initial Initial Failure Check the signal at the pin 17 of Check U101, U201 U101 is “High” when the phone is boot on Check the pin 18 Check the U701 of U101 is “High”...

  • Page 18: Sim Part

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-3. Sim Part Phone can’t access SIM card Check the pin 1 of CN801. Check the circuit related to U802 voltage 2.8V ? Check the SIM connector’s (CN801) Resolder or change CN801...

  • Page 19: Charging Part

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-4. Charging Part Abnormal charging part Check the pin 14, 15 of CN301 Replace TA is around 3V Resolder Q201, U201, C203, R203 Check the pin 1 of Q201 Check the U601 is “Low”...

  • Page 20: Microphone Part

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-5. Microphone Part Microphone does not work Resolder or change CN201 check the connection or change LCD-Keypad PCB from CN201 Check the reference voltage on mic path Resolder or change C410 2.5 V...

  • Page 21: Speaker Part

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-6. Speaker Part Speaker does not work Check the soldered Change LCD-Keypad PCB status of CN201 Check the soldered status of ear Resolder or change CN401 jack connector CN401 Resolder or change...

  • Page 22: Key Data Input

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-7. Key Data Input Check initial operation Check the connection between CN201 and LCD-Key PCB When one of the keys is Check the U601 pushed, one of pin [11:15] of CN201 is “High”?

  • Page 23: Ring Indicator

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-8. Ring Indicator Ring Indicator does not work Check the connection between CN201 and LCD-Keypad PCB Check the LED601 Check U601 cathode is “High” Check the voltage of LED601 Anode is Resolder or change LED601...

  • Page 24: Back Light

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-9. Back Light Backlight does not work Check the soldered Replace LCD-Keypad PCB or resolder status of EL pad Backlight Select backlight “ON” mode “ON” mode in the menu ? Resolder or change Q301, R308 Q301 pin 1 = “High”...

  • Page 25: Alert Tone

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-10. Alert Tone Abnormal Alert tone Alert tone on by pushing the key #0289# Is there alert wave signal on the Resolder or replace R508 R508 during alert tone test? Is there...

  • Page 26: Gsm Receiver

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-11. GSM Receiver RX On •All or RF values by dBm should be measured in max hold status of RF input : 62 CH RF spectrum analyzer in active call Amp. : -60 dBm...

  • Page 27: Gsm Transmitter

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-12. GSM Transmitter GSM TX 5pcl U1006 Change CN301 9 pin : 33 dBm? U1006 2, 8 pin:High? 4, 10 pin:Low? U1005 Change U1005 2 pin:High? OSC903 Change 3 pin:0.8 V~2.5 V?

  • Page 28: Pcs Receiver

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-13. PCS Receiver RX On •All or RF values by dBm should be measured in max hold status of RF input : 660 CH RF spectrum analyzer in active call Amp. : -60 dBm...

  • Page 29: Pcs Transmitter

    SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram 5-14. PCS Transmitter DCS TX 0pcl U1006 Change CN301 9 pin : 30 dBm? U1006 2, 8 pin:Low? 4, 10 pin:High? U1005 Change U1005 2 pin:High? OSC903 Change 3 pin:0.8 V~2.5 V?
  • Page 30 5-15. Power Circuit Diagram Power IC Engineer COMPANY NAME Drawn by R&D CHK Size TITLE: POWER DOC CTRL CHK SGH-Q105 POWER MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet SAMSUNG Proprietary-Contents may change without notice 5-15...
  • Page 31 Drawn by City R&D CHK Size TITLE: B D-TO-B D CONNECTOR SGH-Q105 DOC CTRL CHK B D-TO-B D CONNECTOR+CHARGER MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet SAMSUNG Proprietary-Contents may change without notice 5-16...
  • Page 32 5-17. EL & I/F Connector Circuit Diagram I/F CONNECTOR Engineer COMPANY NAME Drawn by R&D CHK Size TITLE: SGH-Q105 DOC CTRL CHK I/F CONNECTOR+EL MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet SAMSUNG Proprietary-Contents may change without notice 5-17...
  • Page 33 5-18. Audio Circuit Diagram Engineer COMPANY NAME Drawn by AUDIO R&D CHK Size TITLE: DOC CTRL CHK SGH-Q105 AUDIO MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet SAMSUNG Proprietary-Contents may change without notice 5-18...
  • Page 34 5-19. Motor & Buzzer & Memory Circuit Diagram MEMORY MOTOR Engineer COMPANY NAME BUZZER Drawn by R&D CHK Size TITLE: SGH-Q105 DOC CTRL CHK MEMORY+BUZZER+MOTOR MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet SAMSUNG Proprietary-Contents may change without notice 5-19...
  • Page 35 SGH-Q105 Circuit diagrams 5-20. Logic Circuit Diagram Engineer COMPANY NAME Drawn by R&D CHK Size TITLE: DOC CTRL CHK SGH-Q105 Logic MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet SAMSUNG Proprietary-Contents may change without notice 5-20...
  • Page 36 5-21. X-TAL(13 MHz) & SIM Circuit Diagram X-TAL(13MHz) Engineer COMPANY NAME Drawn by R&D CHK Size TITLE: SGH-Q105 DOC CTRL CHK X-TAL(13MHz)+SIM MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet SAMSUNG Proprietary-Contents may change without notice 5-21...
  • Page 37 DOC CTRL CHK SGH-Q105 RF IC MFG ENGR CHK MFG ENGR CHK Changed by Changed by Date Changed Date Changed Time Changed Time Changed QA CHK QA CHK Drawing Number Drawing Number Sheet Sheet SAMSUNG Proprietary-Contents may change without notice 5-22...
  • Page 38 Engineer COMPANY NAME Drawn by R&D CHK Size TITLE: TRANSMITTER & RECEIVER SGH-Q105 DOC CTRL CHK TRANSMITTER & RECEIVER MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet SAMSUNG Proprietary-Contents may change without notice 5-23...
  • Page 39 ELECTRONICS © Samsung Electronics Co.,Ltd. October. 2001 Pinted in Korea. Code No.: GH68-02382A BASIC.

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