1. Service Training manual
GT-I9105P
Advanced H/W R&D Group 2

2. Notice :
All functionality, features, specifications and other product
information provided in this document including, but not limited 
to, the benefits, design, pricing, components, performance, 
availability, and capabilities of the product are subject to change 
without notice or obligation. Samsung reserves the right to make changes to this document and the product described herein, at anytime, without obligation on Samsung to provide notification of 
such change.

3. Contents
Concept & Main features
Block Diagram
Component & Location
Disassembly and Assembly
Trouble shooting
Calibration
MHL and OTG

4. Concept & Main features
Category
Description
Battery
Li-Ion 1650mAh
- STD time
Min 680H(2G)/ – TBD
- Talk time
Min 1000min(2G)/ 500min(3G) – TBD
Connectivity
Wi-Fi a/b/g/n (2.4GHz/5GHz)
BT v4.0
USB 2.0 OTG, MHL
IF Connector
Micro-USB
Speaker/
Receiver
Speaker : 15x11mm
Receiver : 12x07
Ear Jack
Φ3.5 (4)
CMF
Front : Strengthened Glass
Rear : Battery Cover PC
Main Color : Black
VPS
Package : QSG, Mini TA, Earphone
Option : Vehicle Dock, Desk Dock, Leather Case
USB Gender(USB OTG), Power Pack, MHL
User Benefit
Best Media Experience via 4.27” sAMOLED Plus
Precise Motion UI & Multi touch
Seamless Sharing Experience
Category
Description
B/B Chipset
Broadcom BCM28155
Standard
HSPA+ 21Mbps/HSUPA 5.76Mbps
EDGE/GPRS Class 12
RF Band
Quad band GSM 850/900/1800/1900MHz
Quad band UMTS 850/900/1900/2100
Application Chipset
BCM28155 (Dual 1.2GHz)
Dimension
66.1 x x 8.89mm
Display
4.27” WVGA Super AMOLED Plus
Camera
8MP AF w LED Flash / 2MP Front
Flash
LED Flash
Memory
8Gb RAM, 8GB Internel SD
Ex. Memory
Micro SD (Up to 32GB)
Antenna
Integrated Antenna
SIM
Sliding Type, 3V Only
Sensor
Accelerometer, Digital Compass, Proximity, Light, Gyro

5. Contents
Concept & Main features
Block Diagram
Component & Location
Disassembly and Assembly
Trouble shooting
Calibration

6. Block Diagram (Baseband)

7. Block Diagram (RF)

8. Contents
Concept & Main features
Block Diagram
Component & Location
Disassembly and Assembly
Trouble shooter
Calibration

9. PCB Diagram (TOP)

10. PCB Diagram (BOTTOM)

11. Main Top 8M Camera Magnetic Sensor 2G PAM Gyro/Acc. Sensor AP/CP
SAW Filter
Movi-MCP
Power Keys
Volume Keys
Tranceiver
CAM Flash IC
NFC
BT/WIFI/FM

12. Earjack/Motor/RCV CON
Main Bottom
GPS ANT Contact
Earjack/Motor/RCV CON
VT CAM Connector
Flash LED
OLED TSP Connector
3G PAM
PMIC
RF Switch
OLED Driver IC
Micro SD
MHL/USB SW IC
OTG
SIM CON
M-USB SW IC
GPS
Haptic IC
MHL IC
Touch Key Connector
USB/SPK CON

13. Light/Proximity Sensors
Ass’y
Motor
8M Camera
3.5pi Earjack
Receiver
GPS ANT
2M Camera
Light/Proximity Sensors
TSP Controller
Micro SD
SIM Card
SPK Connector
BT/WiFi ANT
Main ANT Contact
Mic
Micro USB Connector
Main ANT
Speaker

14. Contents
Concept & Main features
Block Diagram
Component & Location
Disassembly and Assembly
Trouble shooting
Calibration

15. Disassembly

16. Disassembly

17. Disassembly

18. Assembly

19. Assembly

20. Assembly

21. Assembly

22. Contents
Concept & Main features
Block Diagram
Component & Location
Disassembly and Assembly
Trouble shooting
Calibration

23. PBA Diagram (TOP)

24. PBA Diagram (BOTTOM)

25. Power ON

26. Initial (Lock up)

27. No service

28. SIM Part

29. Charging Part

30. Main MIC

31. Sub MIC

32. Speaker

33. Receiver

34. BT/WiFi

35. BT/WiFi

36. FM Radio

37. LCD

38. TSP

39. TSP

40. 8M CAM

41. 2M CAM

42. GSM1800 RX

43. WCDMA Band1 Rx

44. WCDMA Band1 Rx

45. WCDMA Band2/GSM1900 RX

46. WCDMA Band2/GSM1900 RX

47. WCDMA Band5 / GSM 850 RX

48. WCDMA Band5 / GSM 850 RX

49. WCDMA Band8 / GSM900 RX

50. WCDMA Band8 / GSM900 RX

51. GSM 850/GSM900 TX

52. GSM 850/GSM900 TX

53. DCS/PCS TX

54. DCS/PCS TX

55. WCDMA Band1 TX

56. WCDMA Band1 TX

57. WCDMA Band2 TX

58. WCDMA

59. WCDMA Band5 Tx

60. WCDMA Band5 TX

61. WCDMA Band8 TX

63. MHL

65. OTG

66. NFC

67. NFC

68. Concept & Main features Block Diagram Component & Location
Contents
Concept & Main features
Block Diagram
Component & Location
Disassembly and Assembly
Trouble shooting
Calibration 68

69. Calibration 69 69 start Execute Infineon_RFCAL_V44.exe
DGS Read : un-check
FDT Option : if you have License : check ,
no-License : un-check 69 69

70. Calibration 70 70 1. Message “Wating.ST Signal 2. Click the M/A button
3. Change Automatic mode to Manual mode
1. Message “Insert a phone..”
2. Insert IF connector and RF cable to phone 70 70

71. - THE END – 71