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Service Manual Personal Cellular Telephone C2500 WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
3.1 General ............11 3.2 Liquid Crystal Display........11 7. BLOCK DIAGRAM .........44 3.3 Location of Controls ........13 7.1 C2500 Base band Hardware Typical application 3.4 Alpha Entry.............14 and Block Diagram.........44 3.4.1. Character Set / Key Assignments...14 7.2 C2500 RF Block Diagram ......46 3.5 Public Man Machine Interface (MMI) .....16...
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IMPORTANT This document is intended for use by qualified service personnel only. Our policy is of continuous development; details of all technical modifications will be included with service bulletins. While every endeavor has been made to ensure the accuracy of this document, some errors may exist.
Warnings and Cautions Please refer to the phone’s user guide for instructions relating to operation, care and maintenance including important safety information. Note also the following: Warnings: 1. CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED WITH ELECTRONIC ENGINE MANAGEMENT SYSTEMS AND ANTI-SKID BRAKING SYSTEMS.
1. INTRODUCTION 1.1. Purpose of the Manual This service manual contains the information and procedures required for instilling, operating and servicing the LG GSM Personal Cellular Mobile Telephone system operating on GSM Digital Cellular Networks. 1.2. Structure of the manual...
2. LEVEL 2 SERVICE GUIDELINES 2.1. Introduction The document is intended to help you carry out repair up to Level 2 on the C2500 mobile phone. The repair for International version and Asian variants are identical unless otherwise noted, therefore the description herein is confined to C2500 only.
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Battery connector Pitch=2.5mm 3Pin PA08303 ENZY0018701 2285-3187-0000 Antenna Ass'y ( w Louder SPK) SNGF0013601 2206-1110-0001 Receiver Panasonic - EASG1D501E2 SURY0009301 228S-1187-0000 TOP CASE Ass'y LG Silver ( w LENS) ACGK0073101 2211-DP18-1100 Deco. Plate for Side-L MDAC0017601 2211-DP18-2100 Deco. Plate for Side-R MDAC0017701 2211-SE18-0100...
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Description SVC Level LG P/N 2218-18B5-0080 PCB Main Board, C2500 SAFY0159101 2.2.4. Level 2.5 This level requires the repair or removal of certain specified discrete components of the mobile units’ main board. This level of repair might requires a specific tools and soldering equipments with proper soldering jigs in conducting the repair job.
SW D/L cable : 2.4. Features The LG Telephone Model C2500 is a high performance small, light handset for business and domestic use. The following features are provided: 1. Triple Codec which includes Half Rate / Full Rate and Enhanced Full Rate (EFR) speech codec.
3. OPERATING INSTRUCTIONS 3. OPERATING INSTRUCTIONS 3.1. General This section provides a brief guide to the operation and facilities available on the telephone handset. Refer to the Operating Instruction supplied with the telephone for full operational information. 3.2. Liquid Crystal Display The telephone handset has a graphical chip on glass display.
3. OPERATING INSTRUCTIONS Essential indicators Indicates signal strength and alternate line service. Shows handset current battery charge strength. Indicates the phone keypad is locked. Indicates the profiles alert type is Ring Indicates the profiles alert type is vibration. Indicates the profiles alert type is vibration and ring. Indicates the profiles alert type is vibration then ring.
3. OPERATING INSTRUCTIONS 3.3. Location of Controls Hand-free kit connection Earpiece Adjust Volume Side key Audio Play Display Screen Power on / charging indicator USB connector Microphone Antemma area Speaker Battery Cover Figure 3.2: Location of Controls - 13 -...
3.4. Alpha Entry 3.4.1. Character Set / Key Assignments There are 20 keys on C2500, including 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, *, #, SEND, END, Left-Soft-Key (LSK), Right-Soft-Key (RSK), 4-way Navigation Key. The following ID drawing is only used for Keypad Layout’s reference.
3. OPERATING INSTRUCTIONS ➢ Key Function List λ A. Power/End key. • Switch phone on and off. Also, ends a call or Exit from any function and back to Idle mode. λ B. Selection Key • The function of the keys depends on the text shown on the display above the keys. For example, Menu and Name in Idle mode.
3. OPERATING INSTRUCTIONS 3.5. Public Man Machine Interface (MMI) 3.5.1. Reading the Phonebook Memory Location # <MEMORY LOCATION> # Leading zeros can be left out of the location number, e.g. 007 can be 7. 3.5.2. Features for Factory Service Features Description By 2945#*# to enter production mode A.
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3. OPERATING INSTRUCTIONS G. Ring tone[7] This menu is to test the Ring tone. H. LED[8] This menu is to test the LED. • Main LCM BL on: Main LCM BL is on. • Main LCM BL off: Main LCM BL is off. •...
3. OPERATING INSTRUCTIONS 3.5.3.Tips for Call Option A call can be connected to any single caller by pressing Option key. When user press Option key during active call, user can choose one of those functions from the list: Hold: put a call on. Retrieve: reconnect a holding call.
3. OPERATING INSTRUCTIONS 3.7. Troubleshooting The user is given the following information and advised to contact the dealer if the problems persist: Problem Cause Remedy Telephone will not Check that the battery pack is fully charged switch on and correctly connected to the telephone. Extremely short battery The network in use and the Avoid areas of poor reception.
4. ASSEMBLY INSTRUCTIONS 4.2. Antenna Base sub assembly 1. To add cmos rubber on antenna base 2. To add speaker on antenna base 3. To add speaker cover on antenna base - 21 -...
4. ASSEMBLY INSTRUCTIONS 4. To add antenna metal plate on Antenna base 5. To add cmos sponge on Antenna base 4.3 PCBA sub assembly 1. To add LCM module on PCBA - 22 -...
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4. ASSEMBLY INSTRUCTIONS 2. To add metal dome on PCBA 3. To add BB shielding cover on PCBA 4.To add RF shielding cover on PCBA - 23 -...
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4. ASSEMBLY INSTRUCTIONS 5.To add CMOS on PCBA 6.To add antenna base on PCBA 7. To add LCM shielding on PCBA - 24 -...
4. ASSEMBLY INSTRUCTIONS 4.4 Top case sub assembly 1. To add receiver rubber and receiver on top case 2. To add Keypad on top case 4.5 Bottom case sub assembly 1. To add battery connector on bottom case. - 25 -...
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4. ASSEMBLY INSTRUCTIONS 2. To add vibrator on bottom case. 3. To add Mic rubber and Mic on bottom case. 4. To add earphone cap on bottom case. - 26 -...
4. ASSEMBLY INSTRUCTIONS 5. To add Mic boot on bottom case 6. To add mini-USB cap on bottom case 4.6 Main assembly 1. To add PCBA sub assembly on top case sub assembly. - 27 -...
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4. ASSEMBLY INSTRUCTIONS 2. To add left side key and strip on main assembly. 3. To add right side key and strip on main assembly. 4. To add bottom sub assembly on main assembly. - 28 -...
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4. ASSEMBLY INSTRUCTIONS 5. To add RF cap on Main assembly 6. To add battery cover on main assembly. - 29 -...
5. TECHNICAL SPECIFICATION 5. TECHNICAL SPECIFICATION 5.1. TX Characteristics All data is applicable to E-GSM900 and DCS1800 / PCS1900 except where stated. 5.1.1. Frequency Error ± 0.1 ppm max. relative to base station frequency. 5.1.2. Modulation Phase Error RMS: Equal to or less than 5° Peak: Equal to or less than 20°...
5. TECHNICAL SPECIFICATION Measurement conditions for output RF spectrum measurements: Frequency Spen 0 Hz Measurement Bandwidth: 30 kHz Video Bandwidth: 30 kHz (modulation) 100 kHz (switching) Average (Modulation) Over 200 burst Peak Hold (Switching) Over 10 burst 5.1.5. Spurious Emissions at Antenna Connector Frequency range Power level in dBm GSM 400,...
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5. TECHNICAL SPECIFICATION Approx video Frequency range Frequency offset Filter bandwidth bandwidth 100 kHz to 50 MHz 10 kHz 30 kHz 50 MHz to 500 MHz 100 kHz 300 kHz excl. relevant TX band: GSM 450: 450,4 MHz to 457,6 MHz;...
5. TECHNICAL SPECIFICATION 5.2. Rx Characteristics 5.2.1. Sensitivity E-GSM 900 Full Rate Speech The reference sensitivity performance in terms of frame erasure, bit error, or residual bit error rates (whichever is appropriate) is specified in the following table, according to the propagation conditions. Propagation Conditions Propagation Propagation...
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5. TECHNICAL SPECIFICATION DCS 1800 Full Rate Speech The reference sensitivity performance in terms of frame erasure, bit error, or residual bit error rates (whichever is appropriate) is specified in the following table, according to the propagation conditions. Propagation Conditions Propagation Propagation Channels...
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5. TECHNICAL SPECIFICATION PCS 1900 Full Rate Speech The reference sensitivity performance in terms of frame erasure, bit error, or residual bit error rates (whichever is appropriate) is specified in the following table, according to the propagation conditions. Propagation Conditions Propagation Propagation Channels...
6. Calibration 6. Calibration 1. Select the comport no. which connected to mobile or fixture 2. Main Form - 37 -...
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6. Calibration (1) Open NVRAM database: Select the NVRAM database (2) Open configuration file: Select configuration file - 38 -...
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6. Calibration (3) Setup logging file: Decide the log file (4) Setup result file: Decide the result file - 39 -...
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6. Calibration (5) Open calibration data initial file: Open data initial file to calibration (6) Setup calibration data result file path: Decide the data result folder - 40 -...
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6. Calibration 3. Keep the mobile power off and put the mobile on fixture or connect mobile with cable then click the start button 4. After click Start button , waiting for mobile power on - 41 -...
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6. Calibration 5. Calibration begin Appendix :Cable loss 1. Click configuration file - 42 -...
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6. Calibration 2. Make up for the cable loss value - 43 -...
10. REPLACEMENT PART LIST Note: This Chapter is used for reference, Part order is ordered by SBOM standard on GCSC ITEM Darts P/No. Description Min. Q'ty Location LG part number Chip Set 2255-6217-3080 RISC PROCESSOR,TFBGA,282P U201 EUSY0298601 225K-T700-1080 BACKEND IC,TFBGA,96P,AIT700G/CN1-G U500...
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10. REPLACEMENT PART LIST ITEM Darts P/No. Description Min. Q'ty Location LG part number EME -SMT 220B-0010-0000 BACKUP BATT D4.8xH1.4mm 0.06F XC414-II06E N401 SBCL0001003 221J-EP06-0988 EARPHONE JACK KM03011ABGS1 6P J101 ENJE0005101 220S-2010-0081 SWITCH,RF TEST SWITCH,6000MHz 2W J601 ENWY0004101 221C-SC06-0182 CONN.,SIM CARD CONN.,6PIN,217+010+606,ACT...
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10. REPLACEMENT PART LIST ITEM Darts P/No. Description Min. Q'ty Location LG part number PRE-SUB ASS'Y OSP,PRE-SUB BOTTOM CASE ASS'Y,ARI, 228S-2187-0010 ACGM0071701 LOG,SILVER PRE-SUB ASS'Y OSP,PRE-SUB BOTTOM CASE ASS'Y,ARI, 228S-2187-0110 ACGM0071702 LOG,BLUE ME Ass'y 2206-6020-0088 SPEAKER,DMS1508C-11-PC-F3-G SUSY0020801 2214-MF13-3Z80 SCREW,D2.4XM1.6X3.8,ZN,WHITE GMZZ0020401...