LG L1100 User manual

Service Manual Model : L1100
Service Manual
L1100
P/N : MMBD0032801 Date: June, 2004 / Issue 1.0

REVISED HISTORY
DATE ISSUE CONTENTS OF CHANGES S/W VERSION
31/MAR/2004 ISSUE 0.1 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
L1100
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Table of Contents
1. INTRODUCTION.................................. 4
1.1 Purpose ............................................….
1.2 Regulatory Information ..........................
1.3 Abbreviations .........................................
2. General Performance .....................… 7
2.1 Product Name ................................…….
2.2 Supporting Standard ……………………..
2.3 Main Parts …………………………………
2.4 H/W Features …………………………….
2.5 S/W Features …………………………….
3. H/W Circuit Description ....................12
3.1 RF Transceiver General Description ……
3.2 Receiver Part …………………………….
3.3 Transmitter Part …………………………….
3.4 Power Amplifier …………………………….
3.5 26MHz Clock ……………………………….
3.6 Power Supplies and Control Signals ……
3.7 Digital Baseband (DBB) Processor ………
3.8 Analog Baseband (ABB) Processor …...…
3.9 Camera Circuit ……..……………….………
4
4
6
7
7
7
8
10
12
12
15
17
17
18
19
24
42
5. ASSEMBLY INSTRUCTION ………....97
5.1 Disassembly ..........................................97
6. DOWNLOAD ……………………...……103
6.1 Download Setup .....................................
6.2 Download Procedure ………...….……….
103
104
7. SERVICE AND CALIBRATION …….. 111
4.10 Vibrator Trouble ………………………….
4.11 Keypad Backlight Trouble ……………….
4.12 Folder Open/Close Trouble ………….….
4.13 SIM Detect Trouble ………………………
4.14 Earphone Trouble ………………………..
4.15 Infrared Data Association Trouble ………
4.16 Camera Trouble …………………………..
64
66
68
70
72
77
80
7.1 Service S/W ……....................................
7.2 Calibration ……………….…...….……….
111
114
4. TROUBLESHOOTING .................… 49
4.1 Main Components Placement …………..
4.2 FPCB Components Placement ………….
4.3 Baseband Components ..……………..….
4.4 Main Components …………………………
4.5 Power On Trouble …..........…………..….
4.6 Charging Trouble ........................…..…..
4.7 LCD Display Trouble ………....................
4.8 Receiver Trouble ………………………….
4.9 Microphone Trouble ……………………….
49
50
50
51
52
53
55
57
61
8. CIRCUIT DIAGRAM .............………... 119
8.1 BB_MAIN ………..……………..................
8.2 AUDIO …………………….……………….
8.3 MEMORY ………….…………………..….
8.4 MMI ……….…………….………………….
8.5 Peripheral ………………………..…..…….
8.6 CAMERA ………………………………...
8.7 LCD ………………………………….…….
8.8 RF ………………………………………….
119
120
121
122
123
124
125
126

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Table of Contents
10. ENGINEERING MODE ................... 129
11.1 Setting Method .................................….
130
11. STANDALONE TEST ..................... 130
12.1 Exploded View .................................….
12.2 Replacement Parts
<Mechanic components> ………………..
Replacement Parts
<Main components>………………………
12.3 Accessory ………………………………..
131
133
136
148
12. EXPLODED VIEW &
REPLACEMENT PART LIST.......... 131
9. PCB LAYOUT .............……………... 127

1. Introduction
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the
features of the L1100
1.2 Regulatory Information
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 you’re 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. LGE 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. LGE will not be
responsible for any charges that result from such unauthorized use.
A. Security
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.
B. Incidence of Harm
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 L1100 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.
C. Changes in Service
Maintenance limitations on the L1100 must be performed only by the LGE 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.
D. Maintenance Limitations
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