FLY E135, E135TV Service Manual
E135 Service Manual Wingplus Communication LTD.
WINGPLUS
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.
WINGPLUS
Content
1 INTRODUCTION TO BLOCK DIAGRAM ................................................................................................ 3
2 ENGINEERING MODEL........................................................................................................................... 4
3 BLOCK DIAGRAM ................................................................................................................................... 5
4 TECHNIQUE PARAMETER ..................................................................................................................... 6
5 BASEBAND TROUBLE ........................................................................................................................... 9
5.1
5.2 Flash programming does not download
5.3 Phone does not “power on”
5.4 Sound trouble
5.5 Can not charge up
5.6 LCD trouble
5.7
5.8 Microphone trouble
5.9 Earphone part trouble
5.10 USB transmit trouble
5.11 Vibrator trouble
5.12 Receiver does not work
5.13 Camera trouble
5.14 Bluetooth has not function
5.15 Motion sensor trouble
5.16 FM Trouble
5.17 Light sensor trouble
5.18 Phone can not access SIM card
5.19 TF CARD TROUBLE ..................................................................................................................... 27
Preparatory work for repair
................................................................... 11
............................................................... 12
.................................................................... 14
Keyboard not function .......................................................... 15
.............................................................. 16
............................................................. 18
................................................................. 19
................................................................. 21
..................................................................... 24
.............................................................. 25
........................................................ 9
.............................................. 9
....................................................... 10
............................................................ 17
.......................................................... 20
........................................................ 22
............................................................ 23
................................................... 26
6 RF TROUBLE ......................................................................................................................................... 29
6.1 Principle of operation
6.2 AGC failure
6.3 AFC failure
6.4 APC Failure
7 MAINTENANCE TOOLS ........................................................................................................................ 34
..................................................................... 30
..................................................................... 31
.................................................................... 32
............................................................ 29
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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 Key pa d
Handset Bluetooth Report
■TV test mode command : *#867#
■Query software version command : *#8432#
■Separate test command : *#32*#
Ver s ion Resource BIN Echo loop Vib ra to r
LED Hea ds e t RTC
MTBF UART Mermory card Nand Flash FM Radio Camera Bluetooth
FMRadio Handset Camera
LCD Charger
LCD
Ba tt e r yFMRadio Speaker
Key pa d
ADCLCD c ontrast
Receiver
Loud spk Ringtone
Sp eaker/Vib rator/ T-F lash
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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
6 POWER LEVEL
7 Spectrum due to
Modulation
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
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
6000 －71 －73
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8 Spectrum due to
Switch
9 BER EGSM/DCS1800
11 RX Level Precision ±3dB
12 SLR 8±3dB
13 TX Response
14 RLR 2±3dB
15 RX Response
16 STMR 13±5dB
17 Distortion
18 Side tone
distortion
Carrier Wave offset（kHz）
400
600
1200
1800
BER（II）<2%@－102dBm
Fre.(Hz)
100
200 0 /
300 0
1000 0
2000 4
3000 4
3400 4
4000 0 /
Fre.(Hz)
100
200 0 /
300 2
1000 *
2000 0
3000 2
3400 2
4000 2
TO ARL （dB） Grading ratio（dB）
－35
－30
－20
－10
0 33.7
7 31.7
10 25.5
3 rank distortion<10％
GSM (dBm) DCS/PCS
－19
－21
－21
－24
MAX（dB）
－12
MAX（dB）
－12
17.5
22.5
30.7
33.3
(dBm)
-22
-24
-24
-27
MIN (dB)
/
－12
－6
－6
－6
－9
MIN(dB)
/
－7
－5
－5
－5
－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
21 Antenna display
22 Battery status
23 Alarm Voltage 3.6±0.03V
24 Auto turn off
voltage
25 Battery type Li.Battery
26 Charger AC mode charger
;
Bar Number Power
5
4
3
2
1
0
Bar Voltage
0 3.62V
1
2
3
4
3.5±0.03V
Standard Voltage＝3.7V
The top voltage＝4.2V
Capacity：850mAh
Import：100～240V，50Hz
Output：5V，600mA
－85dBm～－50dBm
－89dBm～－82dBm
－93dBm～－86dBm
－97dBm～－90dBm
－101dBm～－94dBm
－110dBm～－98dBm
3.73V～3.62V
3.8V～3.73V
3.91V～3.8V
3.91V～4.2V
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E135 Service Manual Wingplus Communication LTD.
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5 Baseband Trouble
5.1 Preparatory work for repair
5.2 Flash programming does not download
Analysis Process：
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Not Dow nload
Current>300mA
VCHG
or VBAT
whether
short circuit
and GND
Slightly larger than norm al
VCO RE（1.2V
AVDD（ 2.8V
VDD（ 2.8V
VT CXO（2.8V
VMEM( 1. 8V)
VREF (1. 5V)
Check voltage
whetheris normal,
reverse Resistance
whether is normal
whether there is short
circuit
）、
）、
）、
）、
、
，
Check
current
YES
Check test point
voltage (UTX,URX
is 2. 8V)
YES
Che c k 26M Hz
YES
Dow nload is mainly c om m unic ations
betw een the CPU and FLASH
including the line of control, address lines
and data lines
no problem
no problem,the final issue may itself
access to the PCB,there are problems removed the CPU and FLASH, Trace of
the on-off
。
If chec k external circ uit
，
CP U and F LAS H w e lding
Not wave output
，
Little or no current
NO
Chec k the
corresponding
signals in the
circuit-off
example:T212,T
213
）
（
For
First check U109
whether there is
VCCRF outp ut ;
secondly,check
welding of the
U103
Ch ec k VBAT
，
VCHG
voltage
whether is
normal
，
If
there is no
voltage,
c hec k w elding
of the system
I/O
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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clock signal reaches the microprocessor, the memory before need be cleared, therefore PMU will send
reset signal to it for initialization. After the initialization is finished, it outputs control commands to
memory, then memory will change to permit state, and then through address line to look up where boot
program is, after finding the boot program it will be sent to CPU internal DSP circuit through data lines.
After the successful operation, the CPU output signal to PMU, the power supply will continuously output
voltage to complete booting.
After phone powers on, the CPU calls RF parameters from flash, through radio BCCH to receive
the signal intensity in the area, if your phone has a SIM card or UIM cards, Mobile phone will send the
information in SIM card to the BS, and receives information from the BS, thus achieve network
connections.
After being connected with networks, mobile phones will be in a idle mode, but also mobile phones
through SACCH periodically exchange some information with base stations, such as signal strength
and frequency synchronization, receiving level, and receiving quality
：
Analysis Process
Download ok
but no power on
Re-download
Measure whether
there is 32KHz
signal output
Check communications
betw een the CPU and
FLASH
，
NO
YES
NO
YES
Sortware porblem
NO
Measure VRTC whether there is 2.8V
voltage output,or else re-welding or
change U201
Communications between the CPU and
FLASH
including the line of control, address lines
NO
and data lines
no problem
problem,the final issue may itself acc ess
to the PCB,there are pr oblems - removed
the CP U a n d F LAS H, Tr ac e o f t h e o n - of f
，
。
If check external circuit
，
CPU adn FLASH welding no
END
5.4 Sound trouble
Analysis Process：
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