Cell Phone Camera Work System, Measurement and repair modeCell Phone Camera Work System, Measurement and repair mode
Camera phone system work we will try to discuss here.
From the Start the Nokia 6610i camera spt, 3200.7650, and other BB5. skematic path and it works pretty much the same system. Only slightly different than the source voltage, and processor.
There are mobile phone processor from IC who HWA / AEM (Hardware Accelerator / Auxilliary Energy Management)
There are ones from the OMAP Golde Eye, There are ones of the RAP.
There are mobile phone voltage is derived from the UEM who, no reply from the retu / AVILMA, and some of the Step Down DC / DC Converter / SMPS / LDO Regulators for Camera.
The point is most important bagian2 MLP camera working conditions are:
There are who do duty for Analog Voltage Power / Power for Camera. And there who Voltage Digital PD serves as a data processor of the camera.
Analog voltage greater than the Variable Reg. Digital. Generally Variable Reg. Analog 2.8 V and Variable Reg ranges. Digital 1.8 V
2. External Clock
Each camera requires prerequisite clock works, clock ponderable quantities here who is stable with Frequency Counter or Osciloscope will be seen a value of 9.6 Mhz 1.8 Vpp
3. I2C Control Line
On Line I2C (Inner Integrated Circuit), here is the point of control for Camera Processor as indicators or check the camera. There are two paths here are interchangeable checked CCISCL (Continuity Check Indicator Serial Clock) = Channel Clock
and CCI SDA (Serial Data Continutiy Check Indicator) = Line Data
Processor Control given by the camera through the channel for data based on contemporaneous changes in Clock Clock channel. So here berubah2 Clock and stable of BKN spt EXTCLK who ponderable.
We measure the voltage of 1.8 V who is connected with Pull Up Resitor this I2C line PD.
4, Camera Data Line
There are two lines from Processor remittance data to the camera and vice versa. There are two lanes and Clocknya.
Of data sent from the processor to the camera based on clock change has happened.
Data and Clock lines are lines:
Camera Channel Processor Clock + and -
Camera Clock Data Channel + and -
For more details we can see the following scheme:
1. VCAP = Voltage Storage in capacitor as a voltage stabilizer
2. VANA = Analog Voltage for Camera (2.8 V From VFLASH1/VAUX retu / Menelaus)
3. VDIG_CAM = Variable Reg. For Digital Camera (1.8 V from FiO / SMPS / Menelaus)
4. XSHUTDOWN = Control of the CPU to enable / disable the Camera (1.8 V)
5. Clock for Camera EXTCLK = 9.6 Mhz
6. Continuity Check Indicator CCISCL = Serial clock (1.8 V) from the CPU RAP / HWA Camera IC / OMAP GOLDEN EYE
CCISDA = Continutiy Check Indicator Serial Data (1.8 V) from the CPU RAP / HWA Camera IC / OMAP GOLDEN EYE
7. CCPCLK = Channell Camera Processor Clock from CPU RAP / HWA Camera IC / OMAP GOLDEN EYE
8. CCPDAT = Channell Camera Processor Data from the CPU RAP / HW Camera IC / OMAP GOLDEN EYE
By making the voltage measurement, Clock and Data related, then the repairs we do with detachable camera correctly and precisely, thus directly targeted and non menduga2 ..
Camera damage caused by the software is also admissible. So before stepping into the hardware is better in improving data DCC (Dynamic Camera Configuration File) If the writing fails this file so we can be sure there are troubled Hardware. However, if the PD damage DCC file then CCPDAT + and Data - who measured PD Osci who would deviate from the pic should be.
How to write a DCC file can be with Phoenix and with MXKey:
Service ->> Phone Test -> Camera -> Write To Phone -> select files DCC
Part of the Scheme Camera Connector can be seen as follows
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)