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Related Manuals for Blu STUDIO 5.0S II
Summary of Contents for Blu STUDIO 5.0S II
- Page 1 STUDIO 5.0S II SERVICE GUIDE...
- Page 2 This document“STUDIO 5.0S II Working Service Guide_V1.0”is the maintenance work guide for STUDIO 5.0S II. The compile objective is to describe the detail theory of STUDIO 5.0S II and to offer a maintenance guide for the later mass production and after service.
- Page 3 1.2.1 STUDIO 5.0S II Summary STUDIO 5.0S II Supports the four 2G band class frequency: GSM850/900/1800/1900Mhz and two 3G band class frequency 850 or 1900 or 2100, MP3, MPEG4, U storage, USB charger, video record and play, Bluetooth, WIFI, and so on.
- Page 4 2. Assembly components on Bottom layer as follow：...
- Page 5 STUDIO 5.0S II Hardware Diagram The HW Diagram as follow： STUDIO 5.0S II Main Components 1.5.1 Mainboard 1 U101 - MT6582 CPU 2 U301 - MT6323 3 U401 - H9TP32A8JDACPR-KGM or H9TP32A8JDBCPR-KGM Memory 4 U501 - SKY77590 RF PA 5 U502 - MT6166 Transceiver...
- Page 6 RF PARTS Basic diagram: The RF part of STUDIO 5.0S II consists of a transceiver (MT6166), GSM PA (RF3232) ASM a WCDMA PA (RF7241/2/5/8) and an ASM. 1 The receiver circuit will receive the high frequency signal from the antenna, select out the necessary signals and demodulate them into I/Q signals, transmit them to the BB (MT6582).
- Page 7 RX Circuit At first, the GSM signals received by the antenna will go through the front model SAW filter to the MT6166. They are amplified, mixed and modulated into the I/Q carried by the 100KHz wave, done by the band pass filter, amplifier (controlled gain), filter, amplifier(controlled gain) and mixer.
- Page 8 a. The wave I/Q at transmit state as below. c. If the PA_EN,VRAMP and TX input are all in the correct states and the TX output is abnormal ,you can know there are something wrong with the SKY77590...
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Page 9: Baseband Parts
BASEBAND PARTS STUDIO 5.0S II’s baseband is composed of MT6582 .The MT6582 is the core chipset with responsibility for the audio, communication and the control of all parts of the system. The digital baseband in MT6582 is the strengthen GSM processor with integrated channel encoder/decoder, complex/de –complex, encrypt/decrypt and other subsystems of... - Page 12 Audio Part 3.1.1 Speaker Circuit Because the chipset integrated the audio transducer and the hardware MP3 decoder, also include the audio PA for driving the speakers. The speaker circuit as below: MIC Circuit If the MIC loop is no working and the MIC is ok, you should check the below circuit...
- Page 13 Earphone Circuit In this circuit, there are earphone_speaker and earphone_MIC, two signals channels. If the earphone is good, plugged into the audio jack, but it doesn’t work normally, such as no speaker audio, no mic audio please check the circuit below: The EINT_HP is the interrupt request from the plugged earphone to the CPU.
- Page 14 USB Download Keypad Part In the project, the is used to the keypad circuit. When a key is pressed, array scanning the scan signal will be triggered and the CPU can recognized the correspondence line and row, then read the function of it by the software. Camera Part The circuit is the connector of sensor .All the signals are necessary for the camera’s function.
- Page 15 0.3M:...
- Page 16 LCD Part 5.8.1 Circuit and Maintenance: Most of the hitches in this part represent as white screen, black screen, lack of color and snow screen. The check steps as below: White screen, first check the connection of the FPC. Then check the solder of the connector’s pin.
- Page 17 5.9 Backlight Parts 5.9.1 Circuit 5.9.2 Circuit and Maintenance If the LCD has no display or bad display, please check the PWM_BL_CTRL’s voltage level and the Frequency. After that, check the solder of the LCM connector’s pin. 5.10 WIFI and Bluetooth Part ...
- Page 18 5.11 G-SENSOR 5.12 L/P SENSOR...
- Page 19 5.13 Touch panel...
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