Table of Contents
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The description of Maintenance Manual .................................................................................................. 2
Introduction.............................................................................................................................2
The purpose ...........................................................................................................................2
Chapter1 FWT Principles and Parameters ................................................................................................ 3
1.1 Circuit Makeup and Principle.............................................................................................3
1.2 Hardware structure of the FWT Min-Board Functional Modules .........................................4
1.2.1 TCPU Board Hardware Structure ....................................................................................... 4
1.2.2 PIPU Board Hardware Structure......................................................................................... 5
1.3 Detailed Description of the FWT Main-Board Functional Module........................................6
1.3.1 Subscriber Interface Sub-system......................................................................................... 6
1.3.2 Power Supply and Power Management Sub-System ......................................................... 14
1.3.3 MSM6000 Sub-System .................................................................................................... 21
1.4 Parameter Indices...........................................................................................................25
1.4.1 Performance Indices......................................................................................................... 25
1.4.2 Electric Indices ................................................................................................................ 26
Chapter2 Installing/Uninstalling FWT.................................................................................................... 27
2.1 Installing FWT.................................................................................................................28
2.2 Uninstalling FWT.............................................................................................................30
Chapter3 ETS Maintenance Software..................................................................................................... 31
3.1 Overview.........................................................................................................................31
3.2 Operation Guide..............................................................................................................31
3.2.1 Hardware Connection....................................................................................................... 31
3.2.2 System Configuration ...................................................................................................... 31
3.2.3 Software Upgrade ............................................................................................................ 33
Chapter4 Maintenance Procedures and Solutions to Common Faults .................................................... 35
4.1 Maintenance Procedure ..................................................................................................35
4.1.1 Troubleshooting Procedure of the Baseband Processing Interface Module......................... 35
4.1.2 RF Processing Module Fault Maintenance Procedure........................................................ 41
4.2 Solution to Common Faults: ............................................................................................43
Appendix................................................................................................................................................. 47
5.1
damageable spare part list .........................................................................................47
5.2 keypad command list ......................................................................................................48
Table of Contents
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Table of Contents
Related Manuals for Huawei ETS2000 Series
Summary of Contents for Huawei ETS2000 Series
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Page 1: Table Of Contents
Table of Contents The description of Maintenance Manual ....................2 Introduction..........................2 The purpose ...........................2 Chapter1 FWT Principles and Parameters ....................3 1.1 Circuit Makeup and Principle.....................3 1.2 Hardware structure of the FWT Min-Board Functional Modules .........4 1.2.1 TCPU Board Hardware Structure ..................4 1.2.2 PIPU Board Hardware Structure.................. -
Page 2: The Description Of Maintenance Manual
The description of Maintenance Manual Introduction This manual is provided as the reference material for Huawei authorized service center CDMA FWT repairing engineers. There are four chapters in this manual. The first chapter introduces FWT Principles and Parameters. In this chapter, the detail description is made for each functional module of FWT. The second chapter explains how to install/uninstall the FWT correctly. -
Page 3: Chapter1 Fwt Principles And Parameters
Board TCPU Figure1-1 Hardware structure of ETS2000 series FWTs The hardware system of HUAWEI ETS2000 series wireless FWTs is composed of two boards and peripherals like keypad/LCD. The two boards are FWT central processing unit (TCPU board) and interface processing unit (PIPU board). The hardware structure of the wireless FWT is shown in Figure 1-1. -
Page 4: Hardware Structure Of The Fwt Min-Board Functional Modules
Hardware structure of the FWT Min-Board Functional Modules The hardware system of the FWTs is composed of two boards and peripherals like keypad/LCD. The two boards are FWT central processing unit (TCPU board) and interface processing unit (PIPU board). Keypad and LCD belong to purchased equipment of the FWT. -
Page 5: Pipu Board Hardware Structure
the voice coding/decoding unit is to conduct compressing and coding operations over 64K voice and digital code traffics like EVRC codes, to let them be suitable for being transmitted in wireless environment. The baseband signal processing unit mainly includes functions like baseband modulation/demodulation and channel coding/decoding. -
Page 6: Detailed Description Of The Fwt Main-Board Functional Module
The serial port protection module is mainly to fulfill the function of serial-port ESD protection. The R_UIM card interface circuit is mainly to contribute to the communication between CPU and R_UIM card and provide and protect the power for the R_UIM card. - Page 7 circuit. The dual transient suppression diode protects the serial port and prevents the damage towards the system from abnormal power level input such as ESD. Serial port signals are divided into 5 groups: Data receiving signal RS_RD (Input); Data sending signal RS_TD (Output).
- Page 8 VDD1_RS voltage is within the range from 3 to 4.4V. If it is not, check Q209 and Q208. 2，Audio interface The ETS2000 series FWT audio interfaces include handle interface (microphone and earphone are included), speaker interface and hands-free microphone interface. Since the power of the speaker is quite high, an audio amplifier is adopted and the MIC interface and the handle interface are directly connected.
- Page 9 Figure1-8 Handle microphone interface Figure 1-9 shows the circuit of the handle receiver interface. Bead and capacitor constitute the L-type filter circuit. Figure1-9 Handle receiver interface Possible fault of the handle channel: If the handle has problems in sending and receiving signals, check whether or not the circuit is broken at L103, L101, L105, and L106 The hands-free interface circuit is shown in Figure 1-10.
- Page 10 U101 is damaged. 3，LCD unit In the ETS2000 series FWTs, LCD is a peripheral component. If it is broken, it can be replaced directly. Then you had better be clear about the function of LCD to choose proper LCD codes. If the dot matrix has no back facet, choose 23040026.
- Page 11 Ground 3. Keypad unit In the ETS2000 series FWTs, the keypad is a peripheral component. If it is broken, it can be directly replaced. Then note the use the correct version of the structure suite. The interface between the system and the keypad is shown by Table 1-1.
- Page 12 Figure1-12 Keypad hardware interface The keypad status indicator and the back facet are shown in the diagram below. The indicator uses the Q102 drive. See Figure 1-13. Figure1-13 Keypad hardware status indicator and back facet interface...
- Page 13 figure1-18System keypad interfaces Serial Signal name Direction Signal function description Remarks Keypad back-facet drive. KEY_BACKLIGHT Current source output. 0--150mA. Communication indicator STATUS_A connecting the LED (-) end Power supply connecting the VREG_PHONE LED (+) end Keypad grounding KPAD_ROW3 Keypad row scanning signal 3 KPAD_ROW2 Keypad row scanning signal 2 KPAD_ROW1...
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Page 14: Power Supply And Power Management Sub-System
RUIM _EN Inter-board interface UIM enabling signal module VDD_ SIM of ETS2000 series FWT is powered by the power management chip on the TCPC board. R-UIM_EN directly provides power for the UIM card. See Figure 1-14. Figure1-14 ETS2000 series FWT VDD_SIM power supply 1.3.2 Power Supply and Power Management Sub-System... - Page 15 Figure1-15 External power overvoltage protection module 2. DC/DC power module The DC/DC power module generates 4.4V main power necessary for the operation of the whole machine. It also fulfills the constant current charging function. The maximum output current is 830mA. We mainly use the PWM control chip (U302) and the switch transistor (Q301) to complete the second-time switch power circuit.
- Page 16 Figure1-16 Power transfer circuit The PWM control chip adopts TL494, including 2 differential amplifiers, 1 external adjustable oscillator, 1 pulse comparer, 1 time overflow controller, and 1 output control circuit. The differential amplifier can work within the range from AC -0.2V to 0.2V. The time overflow controller has a fixed offset to assure the stable output in case of the changed external input.
- Page 17 Figure1-17 TL494 3. Power supply anti-reverse-insertion circuit and external interface D305 and D301 fulfill the anti-reverse=insertion function of the external power supply. EXT_DC signal: Whether or not the external power supply exists; V_BATT signal: Battery voltage; VREG_PHONE signal: Voltage of the second-time power supply.
- Page 18 4. Battery charging/discharging management Here, the control over battery charging is accomplished by controlling the output current of the second-time power supply. When the battery is in fast charging status, the grid of Q303 is low and is not through and the internal differential amplifier of 494 will control the pulse duty ratio of PWM, so that the output current of the switch power supply will be restricted to 830mA.
- Page 19 Figure1-20 Second-time power voltage-limiting module 6. Short circuit protection and overvoltage protection module Q302, Q320, Q321, and D381 constitute the short circuit protection and overvoltage protection module. If short circuit happens to VREG_PHONE, Q321 will be through to trigger a circuit constituted by Q302 and Q320. As a result, the DT voltage of U302 will be improved to 5V, the U302 switch output will be closed, and Q301 will be protected.
- Page 20 Figure1-21 Short circuit protection and overvoltage protection module 7. Startup/shutdown module S301 fulfills the switch function. Turn the switch to the ON side, then TERM_ON: Low electricity level startup pulse; SWITCH_ON: High electricity level startup indicating signal. See Figure 1-23 for the circuit.
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Page 21: Msm6000 Sub-System
450MHz/800MHz1900MHz. The following chapter will explain the detail description of ETS2000 series FWT radio frequency sub-system components. 1. Receiving unit Unit function: After the duplex module sufficiently suppresses the out-of-band spurious filter, the received radio frequency signals will be sent to the down-convert... - Page 22 SAW filter to experience the frequency mixing operation. Since RFR6120 assumes the “Zero Intermediate Frequency” structure, the radio frequency signal can be directly converted into baseband signals. The following operations are I/Q demodulation and filter amplifying, and ADC processing. Finally, the digital baseband signal will be sent to baseband processing unit MSM6000.
- Page 23 baseband RF part ISOL 77105 ATOR 6000 RFT6120 isolator 855923 duplexer RFLO RFT6120 internal component Peripheral RF device Figure1-25 RF emission unit 3. RF tracing unit The main unit function is to provide RF local oscillation signals for transceiver. The RF duplex interval is 45MHz.
- Page 24 LOCK （CP-RX） SBIcontrol Digital logic RX-CP interface TCXO Counter RX-FAQ Loop filter Phase RX-CP-HOLD checking VCO-FTUNE Counter RFR6120 RFT6120 Rx-LO-IN LO-OUT （RX-LO-BUFF） note：Red signal is the definition of RFT pins, blue signal is the definition of RFR pins, green signal is the definition of interface.
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Page 25: Parameter Indices
1.4 Parameter Indices 1.4.1 Performance Indices 1. Primary indices of the receiving unit: Basic indices Frequency range: Work frequency 869MHZ--894MHZ MHz Noise coefficient under sensitivity condition: <=7.5dB (Note: Including the loss from duplexer) Linearity requirement LNA input P1dB: >-18dBm Amplitude frequency characteristics Amplitude range: <±1dB, within 1.23MHz (After being calibrated)} Group delay range: <150nS 2. -
Page 26: Electric Indices
5) Phase detection leakage Phase detection leakage>70dBc 6) Spurious indices All spurious indices>75dBc Indices of receiving intermediate local oscillation signals: 1) Output power: 170.75MHz; 2) Phase detection frequency 50 kHz 3) Phase noise requirement: <-78dBc/Hz@1KHz <-95dBc/Hz@10KHz Phase detection leakage Suppression requirement >70dBc Spurious requirement: Spurious suppression requirement>75dBc RF local oscillation signal indices:... -
Page 27: Chapter2 Installing/Uninstalling Fwt
Chapter2 Installing/Uninstalling FWT As shown in Figure 2-1, an FWT is composed of handset, cover, bottom and wall-mounting bracket. The wall-mounting bracket is used to fix the FWT onto a wall. The handset is connected with the phone body through coiled handset cords. The following part describes only the installation and uninstallation of the body, including cover, bottom, internal cables and boards. -
Page 28: Installing Fwt
2.1 Installing FWT Welding Cables on PIPU There are two groups of cables to be welded, namely handset cables and MIC cables. The handset cables go from an RJ11 socket on the left bottom to be welded onto J101 and J102 on the PIPU. There are four lines in the cable .The welding sequence is of black, yellow, red and green from top to bottom.(Note that the PIPU should face up. - Page 29 (1)PIPU (2) ST2.9*6.5 tapping screw Figure 2－2 Board installation...
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Page 30: Uninstalling Fwt
IV. Mounting Cove (1) ST2.9*9.5 tapping screw Figure 2－3 Cover installation As shown in Figure 2-3, place the cover and bottom together, plug the two clips into the white socket on the PIPU, and then fix the cover and bottom by four tapping screws (2.9*9.5). -
Page 31: Chapter3 Ets Maintenance Software
3.1 Overview ETS maintenance software, developed by Huawei Technologies, Co., Ltd (hereafter referred as Huawei), is to maintain the ETS FWT on the PC. It can run on a Windows platform, and can provide the software upgrade function for the terminal. - Page 32 HUAWEI ETS2000 series Wireless FWT Maintenance Menu 0Chapter3 ETS Maintenance Software Figure3-1 System configuration tool The tool involves login password setting and communication port configuration. Password Setting Password setting is used to set and modify login password. The login password provides a protection for user settings, which should be entered when the software starts or when you need to modify the system configuration parameters.
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Page 33: Software Upgrade
HUAWEI ETS2000 series Wireless FWT Maintenance Menu 0Chapter3 ETS Maintenance Software Clickto cancel the login password. If you restart the ETS maintenance software, the system will not prompt you any more to enter the login password. Communication Port Setting Communication port setting is used to set port type, port number and baud rate. - Page 34 HUAWEI ETS2000 series Wireless FWT Maintenance Menu 0Chapter3 ETS Maintenance Software Normal Download In the normal download mode (the terminal can operate normally), you can implement the software download and upgrade using the maintenance software. Specific configuration procedure is described as follows.
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Page 35: Chapter4 Maintenance Procedures And Solutions To Common Faults
0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults Chapter4 Maintenance Procedures and Solutions to Common Faults 4.1 Maintenance Procedure 4.1.1 Troubleshooting Procedure of the Baseband Processing Interface Module 1. Power fault maintenance procedure... - Page 36 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 2. Initialization fault maintenance procedure Does TP801 have clock signals? Figure 4-2 Initialization fault maintenance procedure...
- Page 37 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 3. Key-press fault maintenance procedure power-on and startup C heck inter-board connection Does LCD respond after the key is power and replace the fault...
- Page 38 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 4. LCD display fault maintenance procedure LCD display fault Detect LCD power supply voltage and adjust potential Does LCD display words clearly after power-on? resistance on LCD;...
- Page 39 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 5. Hands-free fault maintenance procedure Hands-free function fault If the hands-free function is Detect u101, surrounding enabled after power-on, does circuit, and interface cables;...
- Page 40 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 6. Charging fault maintenance procedure The m achine is on a nd connects the pow er supply; Is it to be charged? Insert H uaw ei抯 recha rgea ble...
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Page 41: Rf Processing Module Fault Maintenance Procedure
0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 4.1.2 RF Processing Module Fault Maintenance Procedure 1. RF Channel Fault Maintenance Procedure Start cdma work mode Check the CDMA receiving Are CDMA service and roaming detection normal? - Page 42 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 2. RF receiving channel fault maintenance procedure RF receiving channel fault Check the power of foot 5 output Is duplexer out put normal? end of u101 and remove...
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Page 43: Solution To Common Faults
0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 3. RF emission channel fault maintenance procedure RF receiving channel fault Check circuits like power, tcxo, Do foot 2 and foot 3 RF output... - Page 44 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults Check the output side of the external power supply and make that the power voltage output is normal; Make sure that the switch is turned on. You may shut down the switch and wait a minute.
- Page 45 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults Make sure that the personalized setting has set the communication port No. as the serial port connected; If no matter whether or not the FWT is in sleep, it cannot communicate with the daemon, the solution is to take off the handle and observe whether or not it can communicate with the daemon;...
- Page 46 0Chapter4 Maintenance Procedures and S HUAWEI ETS2000 series Wireless FWT Maintenance Menu olutions to Common Faults 8, Phenomenon: The battery loses its electricity after short-time usage. Solution: Judge whether or not the battery has been used many times. If yes, the battery capacity has been decreased evidently.
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Page 47: Appendix
27010211 brackets are needed Omni-directional antenna -1850~1990MHz-2.15dBi-vertical- omni-directional 27010228 -50W-0r-TNC male - no brackets are needed 51630032 Plastic parts -DKBA8.080.0320-dot matrix eyeglass silkscreen -ETS2000 Series 19040095 Fuse suite-Fast blown-125V-2A-UL specifications -0.004ohm-0.5A*A*Sec-Yes Card/socket-type connectors-SIM socket -6PIN-level-2.54mm-No locker-no 14240022 location-0mm-SMT- for mobile phone only 04044802 Single cable-RF cable-0.15m-(TNC50 straight female -I)-(RG316-50-1.5/0.5 Palm-I)-FWT... -
Page 48: Keypad Command List
HUAWEI ETS2000 系列 无线固定台 维修手册 第四章 5.2 keypad command list Huawei ETS2266 Series FWT Keypad Command Note: "SET SUCC" means the operation is successful; "SET ERROR" means the setting code is not supported here, or your operation will fail. Test Mode Setting... - Page 49 HUAWEI ETS2000 系列 无线固定台 维修手册 第四章 NOTE: The keypad commands of area code setting are valid only when code Area Code Setting analyzing is NOT supported. So these two commands are invalid for the following versions: through B055 to current version.
- Page 50 HUAWEI ETS2000 系列 无线固定台 维修手册 第四章 Special UIM Setting ##60*n# Special UIM. 0：close, 1:open.Vaild after reseting DESCRIPTION: Only valid in RUIM version Charge switch Setting ##61*0# charge switch is off. ##61*1# charge switch is on. Auto IP Setting ##62*0# Auto IP is off ##62*1*xxxx# Auto IP is on;...