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REVISED HISTORY
DATE ISSUE CONTENTS OF CHANGES S/W VERSION
Initial Release
The information in this manual is subject to change without notice and should not be construed as
a commitment by LGE Inc. Furthermore, LGE Inc. reserves the right, without notice, to make
changes to equipment design as advances in engineering and manufacturing methods warrant.
This manual provides the information necessary to install, program, operate and maintain the
G1500.
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Table Of Contents
1. INTRODUCTION...................................5 4. TROUBLESHOOTING .................... 52
1.1 Purpose ................................................ 5 4.1 RF Components ................................. 52
1.2 Regulatory Information .......................... 5 4.2 Rx Trouble .......................................... 53
1.3 Abbreviations ......................................... 7 4.3 Tx Trouble .......................................... 61
4.4 Power On Trouble .............................. 74
4.5 Charging Trouble ............................... 76
2. PERFORMANCE ..................................9 4.6 LCD Trouble ....................................... 78
2.1 H/W Features ..........................................9 4.7 Receiver Trouble ................................ 80
2.2 Technical Specification .......................... 10 4.8 Speaker Trouble ................................. 82
4.9 Mic. Trouble ....................................... 84
4.10 Vibrator Trouble ............................... 87
3. TECHNICAL BRIEF ............................16 4.11 Backlight LED Trouble ...................... 89
4.12 SIM Detect Trouble .......................... 91
3.1 General Description ............................16 4.13 Earphone Trouble ............................ 93
3.2 Receiver .................................................16
3.3 Transmitter Part ................................19
3.4 13MHz Clock .....................................
22
3.5 Power Supplies for RF Circuits .............
22 5. DISASSEMBLY INSTRUCTION ...... 97
3.6 Testing Set-up and Checking Signals ......
23
5.1 Disassembly .........................................97
3.7 Digital Main Processor ............................
36
3.8 Analog Main Processor ...........................
41
3.9 Power Management ...............................
44
3.10 Memories ................................................
46
6. DOWNLOAD AND
CALIBRATION ............................ 100
3.11 Display and Interface ..............................
46
3.12 Keypad Switches and Scanning ...........46
. 6.1 Download ...........................................
100
3.13 Microphone .........................................
47 6.2 Calibration .........................................
102
3.14 Earpiece ..........................................
49
3.15 Headset Jack Interface ........................
49
7. BLOCK DIAGRAM ........................... 105
3.16 Key Back-light Illumination .................49
3.17 LCD Back-light Illumination .................
50
3.18 Speaker & MIDI IC ............................
51
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8. CIRCUIT DIAGRAM ......................... 107
8.1 Main Chipset .......................................
107
8.2 Memory & MMI ..................................
108
8.3 MIDI ...............................................
109
8.4 RF Circuit .............................................
110
9. PCB LAYOUT .................................. 111
10. STAND ALONE TEST ................... 113
10.1 What's the Standalone Test? ...........113
10.2 Standalone Test Equipment Setup... 114
10.3 H/W Test .........................................115
10.4 Tx Stand alone Test Setting ..............
116
10.5 Rx Stand alone Test Setting ..............
118
10.6 What's the Rx Calibration ................
120
10.7 What's the Tx Calibration .................
120
10.8 How to Rx Calibration .....................
121
10.9 How to Tx Calibration ......................
121
10.10 Target powers in dBm for each
121
power level ...................................
11. EXPLODED VIEW &
REPLACEMENT PART LIST ....... 127
11.1 Exploded View ................................. 127
11.2 Accessory ....................................... 129
11.3 Replacement Parts
< Mechanic component > .................130
Replacement Parts
< Main component > ...................... 132
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1. INTRODUCTION
1. INTRODUCTION
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the
features of LG-G1500.
1.2 Regulatory Information
A. Security
Toll fraud, the unauthorized use of telecommunications system by an 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 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 are resulted 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 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.
Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and
may void any remaining warranty.
E. Notice of Radiated Emissions
The LG-G1500 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.
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1. INTRODUCTION
F. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different.
G. Interference and Attenuation
The LG-G1500 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: