Hena MM7619 User manual

HENA DIGITAL TECHNOLOGY (SHEN ZHEN) CO. LTD.
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MM7619 Service Manual

HENA DIGITAL TECHNOLOGY (SHEN ZHEN) CO. LTD.
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Prepared: 王永、熊华兵
Verified: 熊华兵
Approved: 蒋江林
Version: V1.0
Date: 2015/7/9
Product Spec. Introduction······························································································································································· - 3 -
Exploded View·····················································································································································································- 4 -
Disassembly··························································································································································································- 5 -
Assembly······························································································································································································ - 6 -
System block diagram········································································································································································- 8 -
Troubleshooting················································································································································································ - 10 -
Upgrading Guide·············································································································································································· - 13 -

HENA DIGITAL TECHNOLOGY (SHEN ZHEN) CO. LTD.
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Product Spec. Introduction
CPU: MTk8127 (ARM Cortex-A7 up to 1.3GHz)
RAM: 1GB DDR3
Internal: 8GB Flash
Removable: Micro SDHC card slot (Max 32GB)
OS: Android 4.2
Panel: 6.98" (16:9,540*960)
Touch screen: G+P
Camera: 2MP +5MP
Video: 1080P
Wifi:802.11b/g/n
Battery: 3.7V, 2300mAh
Adapter: 5V,1.5A
Accessory: USB Cable, User manual, Power adapter
Size: 8.6*98.8*188mm

HENA DIGITAL TECHNOLOGY (SHEN ZHEN) CO. LTD.
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Exploded View
了

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Disassembly

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Assembly

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stem block diagram
1.1. Block diagram:
1.2. Layout diagram:

HENA DIGITAL TECHNOLOGY (SHEN ZHEN) CO. LTD.
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HENA DIGITAL TECHNOLOGY (SHEN ZHEN) CO. LTD.
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Troubleshooting
1) NO POWER ON: ⑴Check the VPROC_PMU,VSYS_PMU,VIO18_PMU;
⑵Upgraded the software;
⑶checked the MTK8127 & DDR3 solder.
VPROC_PMU:

HENA DIGITAL TECHNOLOGY (SHEN ZHEN) CO. LTD.
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VSYS_PMU: 1.2V
VIO18_PMU voltage: 1.8V

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2) LCD no Display:
3) No touch: checked the U200, whether colder solder; then checked TP, whether damaged.
Measured LCD_VB voltage: the same as
battery voltage;
VCC_LCD: 24.8v
Checked the L710, D505 is damaged
Checked the LCM_RST: 2.8V;
3.3V_TROUT: 3.3V;
VIO28_PMU: 2.8V

HENA DIGITAL TECHNOLOGY (SHEN ZHEN) CO. LTD.
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4) WIFI not work:
Changed the WIFI antenna; or changed the WIFI MODEL.
5) No charger:
Checked U8, whether damaged.
Upgrading Guide
1) Install driver:
Shut down MID，press the volume + button，then connect MID to PC，then press power button ，the PC will popup
the install driver。

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Then choose the driver base your OS of PC
2) Update Software

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First you should confirm your MID have shut down。
Connect the computer automatically after upgrade
We suggest connect the USB of PC that can supply bigger current。