Turbo+ Maintenance Manual
SSeerrvviiccee MMaannuuaall
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Turbo+ Maintenance Manual
Contents
1.B285 Module Features..........................................................................................................3
1.1 Basic Feature.....................................................................................................................3
1.2 Typical Application .............................................................................................................4
2.Main board explored overview ..............................................................................................5
3.Detailed Function Circuit.......................................................................................................7
3.1 Download Module...............................................................................................................7
3.2 Audio Module .....................................................................................................................7
3.2.1 Micphone Circuit..............................................................................................................7
3.2.2 Receiver Circuit...............................................................................................................8
3.2.3 Speaker Circuit................................................................................................................ 8
3.3 FM Module .........................................................................................................................8
3.4 BT Module..........................................................................................................................9
3.5 RF Module..........................................................................................................................9
3.6 LCM Module.....................................................................................................................10
3.7 CAMERA Module.............................................................................................................11
3.8 KEYAPD Interface............................................................................................................12
3.9 ATV ..................................................................................................................................12
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Turbo+ Maintenance Manual
1 B285 Module Features
1.1 Basic Feature
Platform
Band GSM850/GSM 900/DCS1800/DCS1900
LCM
CAMERA 30w
MCP Module Built-in/ External Serial Flash(64/128Mb,1.8V)
BT Module Built-in
FM RX Module Built-in
Audio PA Built-in(Class D)
SIM Dual / Triple SIM
I/O MicroUSB 5PIN
Torch Support
Keypad 23 Key
Spreadtrum SC6531C/SC6531D
Table 1-1: Feature
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Turbo+ Maintenance Manual
1.2 Typical Application
Figure 1.1: Typical Application with SC6531 Based platform
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