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Service Manual
Service Manual
B2000
B2070
Model : B2000
Model : B2070
Date: October, 2005 / Issue 1.0
P/N : MMBD0047201 Date : March 2005 / Issue 1.0
Table Of Contents
1. INTRODUCTION..........................2 5. DOWNLOAD AND
1.1 Purpose ...........................................2 CALIBRATION .......................91
1.2 Regulatory Information ....................2 5.1 Download .......................................91
1.3 Abbreviations ..................................4 5.2 Calibration .......................................96
2. PERFORMANCE ........................ 6 6. BLOCK DIAGRAM .....................99
2.1 H/W Feature ...................................6
2.2 Technical Specification ..................8 7. CIRCUIT DIAGRAM .................101
3. TECHNICAL BRIEF ..................13 8. PCB LAYOUT .........................106
3.1 Transceiver ...................................13
3.2 Power Amplifier Module ..................19 9. ENGINEERING MODE .............109
3.3 13 MHz Clock ............................... 20 9.1 BB Test [MENU 1] .........................110
3.4 Power Supplies of RF circuits ........20 9.2 RF Test [MENU 2] .........................111
3.5 Digital Main Processor ...................22 9.3 MF mode [MENU 3].......................112
3.6 Analog Main & Power 9.4 Trace option [MENU 4] ..................113
Management Processor ................28 9.5 Call timer [MENU 5] ......................113
3.7 Display Interface ............................. 38 9.6 Fact. Reset [MENU 6] ...................113
3.8 Radio Interface ..............................40 9.7 S/W version [MENU 7] ..................113
3.9 Keypad Switches and Scanning .... 41
3.10 Microphone ..................................42 10. STAND ALONE TEST.............114
3.11 Main Speaker ............................. 42 10.1 Introduction ...............................114
3.12 Headset interface ........................43 10.2 Setting Method............................114
3.13 Key Back-light Illumination .......... 44 10.3 Means of Test ............................115
3.14 Vibrator ........................................45
11. AUTO CALIBRATION ...........117
4. TROUBLE SHOOTING ............. 46 11.1 Overview.....................................117
4.1 RX Trouble ................................... 46 11.2 Requirements ..............................117
4.2 TX Trouble ................................... 53 11.3 Menu and Settings ......................117
4.3 Power On Trouble .........................61 11.4 AGC............................................119
4.4 Charging Trouble ........................... 63 11.5 APC ............................................119
4.5 Vibrator Trouble..............................65 11.6 ADC ............................................119
4.6 LCD Trouble .................................. 67 11.7 Setting ........................................119
4.7 Radio Trouble ................................69 11.8 How to do calibration...................119
4.8 Speaker Trouble .............................71
4.9 SIM card interface trouble ............ 74 12. EXPLODED VIEW &
4.10 Earphone Trouble .........................76 REPLACEMENT PART LIST ..121
4.11 Key Backlight Trouble ..................78 12.1 Exploded View ............................121
4.12 Receiver Trouble ..........................80 12.2 Replacement Parts
4.13 Microphone Trouble .................... 82 ...............123
4.14 RTC Trouble .................................84 ......................125
4.15 Indication LED Trouble..................86 12.3 Accessory ....................................138
4.16 PTT Trouble .................................88
4.17 Speakerphone Trouble ..................89
1. INTRODUCTION
1. INTRODUCTION
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the
features of this model.
1.2 Regulatory Information
A. Security
Toll fraud, the unauthorized use of telecommunications system byan unauthorized part (for
example, persons other than your company's employees, agents, subcontractors, or person
working on your company's behalf) can result in substantial additional charges for your
telecommunications services. System users are responsible for the security of own system.
There are may be risks of toll fraud associated with your telecommunications system. System
users are responsible for programming and configuring the equipment to prevent unauthorized
use. The manufacturer does not warrant that this product is immune from the above case but will
prevent unauthorized use of common-carrier telecommunication service of facilities accessed
through or connected to it.
The manufacturer will not be responsible for any charges that result from such unauthorized use.
B. Incidence of Harm
If a telephone company determines that the equipment provided to customer is faulty and
possibly causing harm or interruption in service to the telephone network, it should disconnect
telephone service until repair can be done. A telephone company may temporarily disconnect
service as long as repair is not done.
C. Changes in Service
A local telephone company may make changes in its communications facilities or procedure.
If these changes could reasonably be expected to affect the use of the this phone or
compatibility with the network, the telephone company is required to give advanced written
notice to the user, allowing the user to take appropriate steps to maintain telephone service.
D. Maintenance Limitations
Maintenance limitations on this model must be performed only by the manufacturer or its
authorized agent. The user may not make any changes and/or repairs expect as specifically
noted in this manual. Therefore, note that unauthorized alternations or repair may affect the
regulatory status of the system and may void any remaining warranty.
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1. INTRODUCTION
E. Notice of Radiated Emissions
This model complies with rules regarding radiation and radio frequency emission as defined by
local regulatory agencies. In accordance with these agencies, you may be required to provide
information such as the following to the end user.
F. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look
slightly different.
G. Interference and Attenuation
Phone may interfere with sensitive laboratory equipment, medical equipment, etc.Interference
from unsuppressed engines or electric motors may cause problems.
H. Electrostatic Sensitive Devices
ATTENTION
Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the sign.
Following information is ESD handling: