FLY E135 User manual

E135 Service Manual Wingplus Communication LTD.
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E135 Service Manual
Ver. Edit Date Dept. Record Design/Check Approve
V1.1 2009-10-30 HW Wang Xiao Ming
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E135 Service Manual Wingplus Communication LTD.
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Content
1INTRODUCTION TO BLOCK DIAGRAM ................................................................................................ 3
2ENGINEERING MODEL........................................................................................................................... 4
3BLOCK DIAGRAM ................................................................................................................................... 5
4TECHNIQUE PARAMETER ..................................................................................................................... 6
5BASEBAND TROUBLE ........................................................................................................................... 9
5.1 Preparatory work for repair ........................................................ 9
5.2 Flash programming does not download .............................................. 9
5.3 Phone does not “power on” ....................................................... 10
5.4 Sound trouble ................................................................... 11
5.5 Can not charge up ............................................................... 12
5.6 LCD trouble .................................................................... 14
5.7 Keyboard not function .......................................................... 15
5.8 Microphone trouble .............................................................. 16
5.9 Earphone part trouble ............................................................ 17
5.10 USB transmit trouble ............................................................. 18
5.11 Vibrator trouble ................................................................. 19
5.12 Receiver does not work .......................................................... 20
5.13 Camera trouble ................................................................. 21
5.14 Bluetooth has not function ........................................................ 22
5.15 Motion sensor trouble ............................................................ 23
5.16 FM Trouble ..................................................................... 24
5.17 Light sensor trouble .............................................................. 25
5.18 Phone can not access SIM card ................................................... 26
5.19 TF CARD TROUBLE.....................................................................................................................27
6RF TROUBLE......................................................................................................................................... 29
6.1 Principle of operation ............................................................ 29
6.2 AGC failure ..................................................................... 30
6.3 AFC failure ..................................................................... 31
6.4 APC Failure .................................................................... 32
7MAINTENANCE TOOLS........................................................................................................................ 34
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1 Introduction to block diagram
■Logic Part
U201[CPU+PMU,MT6235BA]
MT6235 is a highly-integrated and extremely powerful single-chip solution for GSM/GPRS/EDGE
mobile phones. Based on the 32-bit ARM926EJ-STM RISC processor,MT6235’s superb processing
power, along with high bandwidth architecture and dedicated hardware support, provides an
unprecedented platform for high performance GPRS/EDGE Class 12 MODEM application.
G101 [VC-TCXO 26MHz]
Main Clock for Control Processor and RF Block, Subsystem
X201 [32.768 KHz Sleep Crystal]
32.768 KHz Clock for Sleep Mode Operation and RTC block.
UB00[TV,TLG1120]
Worldwide Free-to-Air Broadcast Reception
NTSC/PAL/SECAM support (48 - 862 MHz)
FM stereo radio support (76 – 108 MHz) Single-chip TV Receiver
RF tuner
Demodulator
Decoder
DSP and audio/video processing
Scaler
FM stereo radio Highest Performance with Mobility
Best-in class video sensitivity
Mobility support to 430 km/h Dynamic multi-path fading and Doppler compensation Large screen
support Fastest channel switching times
■RF Part
U103 [RF Transceiver MT6140AN]
MT6140 is a highly integrated RF transceiver IC for Global Systems for Mobile communication
(GSM850, GSM900),Digital Cellular communication Systems (DCS1800), and Personal
Communication Services (PCS1900) quad band cellular systems. It includes four LNA’s, two RF
quadrature mixers, a channel filter, a programmable gain amplifier for the receiver, two high precision
I/Q modulators for the quad band transmitter, on-chip regulators, and a fully programmable sigma-delta
fractional-N synthesizer with an on-chip LC-tank VCO. The MT6140 includes control circuits to
implement different operating modes.
U101 [PA RF3159]
High Gain for use in Systems with Low RF Driver Power
Linear EDGE and GSM Operation
PowerStar® GSM/GPRS Power Control
Digital Band Select Enables GSM850, EGSM900 or DCS, PCS Amplifier Lineup
Single Supply Voltage;Requires no External Reference Voltage
Automatic VBATT Tracking Circuit avoids Switching Transients at Low Supply Voltage
Low Power Mode for Reduced EDGE Current
Digital Bias Control for Simple Implementation of Low Power Mode
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2 Engineering model
■Automatic test mode command : *#88#
Test list as follows:
Test Station Flag Ver s ion BackLight Keypad
Bat t er yFMRadio Speaker
Receiver
Speaker/Vibrator/ T -Flash
FMRadio Handset Camera
LCD
Handset Bluetooth Report
■TV test mode command : *#867#
■Query software version command : *#8432#
■Separate test command : *#32*#
Ver s ion Resource BIN Echo loop Vibrator
ADCLCD contrast
Loud spk Ringtone
LCD Charger
Keypad
LED Heads et RTC
MTBF UART Mermory card Nand Flash FM Radio Camera Bluetooth
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3 Block Diagram
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4 Technique Parameter
Item Description Character
1 Frequency GSM
TX：880~915Mhz
RX: 925~960Mhz
DCS
TX：1710~1785Mhz
RX：1805~1880Mhz
PCS
TX：1850~1910Mhz
RX：1930MHz~1990MHz
2 Phase Error RMS<5° Peak<20°
3 RX sensitive EGSM/DCS1800 -104dB
4 TX POWER GSM 2W(33dBm) /DCS 1W(30dBm)
5 Frequency Error <0.1ppm
EGSM DCS/PCS
Level Power Range Level Power Range
5 33dBm ±2dBm 0 30dBm ±2dBm
6 31dBm ±3dBm 1 28dBm ±2dBm
7 29dBm ±2dBm 2 26dBm ±2dBm
8 27dBm ±2dBm 3 24dBm ±2dBm
9 25dBm ±2dBm 4 22dBm ±2dBm
10 23dBm ±2dBm 5 20dBm ±2dBm
11 21dBm ±2dBm 6 18dBm ±2dBm
12 19dBm ±2dBm 7 16dBm ±2dBm
13 17dBm ±2dBm 8 14dBm ±2dBm
14 15dBm ±3dBm 9 12dBm ±3dBm
15 13dBm ±3dBm 10 10dBm ±3dBm
16 11dBm ±5dBm 11 8dBm ±5dBm
17 9dBm ±5dBm 12 6dBm ±5dBm
18 7dBm ±5dBm 13 4dBm ±5dBm
6 POWER LEVEL
19 5dBm ±5dBm 14 2dBm ±5dBm
Carrier Wave offset(kHz) GSM (dBc) DCS/PCS (dBc)
100 ＋0.5 ＋0.5
200 －30 －30
300 －33 －33
400 －60 －60
600～1200 －60 －60
1200～1800 －60 －60
1800～3000 －63 －63
3000～6000 －65 －65
7 Spectrum due to
Modulation
6000 －71 －73
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Carrier Wave offset（kHz）GSM (dBm) DCS/PCS
(dBm)
400 －19 -22
600 －21 -24
1200 －21 -24
8 Spectrum due to
Switch
1800 －24 -27
9 BER EGSM/DCS1800
BER（II）<2%@－102dBm
11 RX Level Precision ±3dB
12 SLR 8±3dB
Fre.(Hz) MAX（dB）MIN (dB)
100 －12 /
200 0 /
300 0
－12
1000 0 －6
2000 4 －6
3000 4 －6
3400 4 －9
13 TX Response
4000 0 /
14 RLR 2±3dB
Fre.(Hz) MAX（dB）MIN(dB)
100 －12 /
200 0 /
300 2
－7
1000 * －5
2000 0
－5
3000 2
－5
3400 2
－10
4000 2
15 RX Response
16 STMR 13±5dB
TO ARL （dB）Grading ratio（dB）
－35 17.5
－30 22.5
－20 30.7
－10 33.3
0 33.7
7 31.7
17 Distortion
10 25.5
18 Side tone
distortion
3 rank distortion<10％
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;
19 Ring Volume At least 85dB in the following.
Incoming tel. alert and message alert are rings
When testing distance is 10cm.
20 Charge Current <700mA
Bar Number Power
5 －85dBm～－50dBm
4 －89dBm～－82dBm
3 －93dBm～－86dBm
2 －97dBm～－90dBm
1 －101dBm～－94dBm
21 Antenna display
0 －110dBm～－98dBm
Bar Voltage
0 3.62V
1 3.73V～3.62V
2 3.8V～3.73V
3 3.91V～3.8V
22 Battery status
4 3.91V～4.2V
23 Alarm Voltage 3.6±0.03V
24 Auto turn off
voltage
3.5±0.03V
25 Battery type Li.Battery
Standard Voltage＝3.7V
The top voltage＝4.2V
Capacity：850mAh
26 Charger AC mode charger
Import：100～240V，50Hz
Output：5V，600mA
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E135 Service Manual Wingplus Communication LTD.
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5 Baseband Trouble
5.1Preparatory work for repair
5.2 Flash programming does not download
Analysis Process ：
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Not Download
Check
current
Little or no current
YES
Check test point
voltage (UTX,URX
is 2.8V)
Slightly larger than normal
Current>300mA
VCORE （ 1.2V ）、
AVDD （ 2.8V ）、
VDD （ 2.8V ）、
VTCXO （ 2.8V ）、
VMEM( 1. 8V) 、
VREF ( 1. 5V)
Check voltage
whetheris normal,
reverse Resistance
whether is normal
，
whether there is short
circuit
Chec k VBAT
， VCHG
voltage
whether is
normal
， If
there is no
voltage,
c hec k w elding
of the system
I/O
YES
Check 26MHz
Check the
corresponding
signals in the
circuit-off
（ For
example:T212,T
213
）
NO
First check U109
whether there is
VCCRF output;
secondly,check
welding of the
U103
Not wave output
Dow nload is mainly c ommunic ations
between the CPU and FLASH
，
including the line of control, address lines
and data lines
。 If check external circuit
no problem
， CPU and FLASH w elding
no problem,the final issue may itself
access to the PCB,there are problems -
removed the CPU and FLASH, Trace of
the on-off
YES
VCHG
or VBAT
whether
short circuit
and GND
5.3 Phone does not “power on”
Power on principle of phone: When the power supply is connected with the phone, through internal
switching circuit in the boot it will form a trigger High-level, when press boot button long enough, the
boot high-level change to low-level because of connecting with GND, and the signal reaches PMU block,
PMU will activate the internal voltage regulator and output stable voltage, as a logical part of the core
CPU will gain power supply.
We know phone boot in three necessary conditions: Power Supply, clock and reset. Now power
supply has been provided, then Crystal will produce 26 MHz clock signal, on the one hand it will be
taken as a RF reference clock, on the other hand, it will be sent to logic to the clock signal. After the
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