Fly FF245 Service Manual
FLY SERVICE SUPPORT
1
FF245 Service Manual V1.0
FLY SERVICE SUPPORT
2
Contents
1.FF245 overview............................................................. 3
1.1 FF245 Basic Feature .................................................... 3
1.2 Function diagram .................................................... ３
1.3 Mainboard component distribution diagram ............................ ４
1.4 Main IC Names ....................................................... ４
2. RF ...................................................................... ５
2.1 RF Overview ......................................................... ５
2.2 RF circuit description .............................................. ６
2.3 BT/FM/ Part ......................................................... ７
3. Audio Module ............................................................. ８
3.1 Micphone Circuit．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．８
3.1.1 Receiver Circuit．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．９
3.1.2 Speaker Circuit．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．9
3.1.3 Download Module．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．9
3.1.4 LCM Module．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．9
3.1.5 CAMERA MODULE．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．10
3.1.6 KEYPAD interface．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．10
3.1.7 I/O Interface．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．11
3.2 Common Failure Analysis and Maintenance ............................. 12
3.2.1 Power failure Check ............................................... 12
3.2.2 Audio faults ...................................................... 12
3.2.3 LCD Fault ......................................................... 14
3.2.4 FM ................................................................ 15
3.2.5 Bluetooth ......................................................... 16
3.2.6 Camera fault ...................................................... 16
3.2.7 SIM card failure .................................................. 17
3.2.8 Motor test is invalid ............................................. 18
3.2.9 T-Flash fault ..................................................... 19
3.2.10 Cannot boot failure .............................................. 20
3.2.11 Charge circuit．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．． 21
FLY SERVICE SUPPORT
3
1. FF245 overview
1.1 Basic Feature
Table 1-1: Feature
Platform
MTK6261（M/D）
Band
GSM850/900，/DCS1800/PCS1900
LCM
CAMERA
30w
MCP Module
Built-in
BT Module
Built-in
FM RX Module
Built-in
Audio PA
extraposition AudiO (Class K)
SIM
Dual SIM
I/O
Micro USB 5PIN
Torch
Support
Keypad
23 key
1.2 Function diagram
FLY SERVICE SUPPORT
4
1.3 Mainboard component distribution diagram
Mainboard TOP
Mainboard BOTTOM
FLY SERVICE SUPPORT
5
1.4 Main IC Names
seril
number
serial number
specifications
position
code
1
IC,MTK6261,GSM/DCS/PCS BB+AP CHIP
MTK6261M/D
U1000
2
IC, AP5200, GSM/ DCS/PCS /GPRS Transceiver
AP5200
U601
3
IC，AW3605 charging valve
AW3605DNR
U203
4
IC，AW5007 EZ-FM
AW5007
U603
2. RF
2.1 RF Overview
The NOUDA AP5200 is a highly integrated RF cellular transceiver for multimode
(GPRS/GSM/DCS/PCS) and multiband (850/900/1800/ 1900) applications.
Auto-calibration routines run internal to the transceiver, Providing robust performance over
the life of the part and simplifying factory calibration. The highly integrated device is fabricated
using a 28nm digital CMOS process and packaged in a 3.2 mm*2.5 mm FBGA.
RF framework block diagram
FLY SERVICE SUPPORT
6
RF components placement
2.2 RF circuit description
2.2.1 The circuit description of receiving part
RF Front-end Module, type AP5200, item U601.
Loading...