Sky Phone SKYF2PRI User Manual
Maintenance Manual
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SSeerrvviiccee MMaannuuaall
Maintenance Manual
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Contents
1 H1822B Module Features ..............................................................................................................3
1.1 H1822B.. .....................................................................................................................................3
1.2 Basic Feature .............................................................................................................................3
1.3 Typical Application .....................................................................................................................3
2 Mainboard overview ......................................................................................................................5
3 Detailed Function Circuit ..............................................................................................................7
3.1 Download Module ......................................................................................................................7
3.2 Audio Module .............................................................................................................................8
3.2.1 Micphone Circuit .....................................................................................................................8
3.2.2 Receiver Circuit ......................................................................................................................9
3.2.3 Speaker Circuit .......................................................................................................................9
3.3 FM Module ............................................................................................................................... 10
3.3.1 FM Circuit (built-in) ............................................................................................................... 10
3.4 BT Module ................................................................................................................................ 10
3.5 ATV Module.............................................................................................................................. 11
3.6 WIFI Module ............................................................................................................................. 11
3.7 RF Module ................................................................................................................................ 11
3.8 LCM Module ............................................................................................................................. 12
3.9 CAMERA MODULE ................................................................................................................. 13
3.10 KEYPAD interface ................................................................................................................. 14
4.1 RF Part ..................................................................................................................................... 15
4.2 BB Part .........................................................................................................
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Maintenance Manual
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1 H1822B Module Features
1.1 H1822B
Figure 1.1: H1822B Module
1.2 Basic Feature
Table 1-1: Feature
Platform MTK MT6250D
Band GSM850/GSM900/DCS1800/PCS1900
LCM
CAMERA
MCP Module 32Mbits Norflash+32Mbits pSRAM
BT Module Internal
FM RX Module Internal
Audio PA Internal
SIM Dual SIM
I/O Micro USB 5PIN
Torch Yes
Keypad Yes
1.3 Typical Application
Figure 1.3.1: Typical Application with MT6250D Based platform
Maintenance Manual
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Maintenance Manual
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2 Mainboard overview
Figure 2.11: top
Figure 2.12: bottom
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