Service Manuals, User Guides, Schematic Diagrams or docs for : LG TV lg_rl28cz20rx__chassis_11ak45__102
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28" AK45 SERVICE MANUAL
RELEASE DATE: 09.04.2003
PREPARED BY: VESTEL ELECTRONICS
TABLE OF CONTENTS
1.INTRODUCTION ....................................................................................................................................1
2.TUNER....................................................................................................................................................1
3.IF PART (TDA9885/86) ..........................................................................................................................1
4.VIDEO SWITCH TEA6415 .....................................................................................................................2
5.MULTI STANDARD SOUND PROCESSOR..........................................................................................2
6.SOUND OUTPUT STAGE WITH TDA7269A ........................................................................................2
7.BERTICAL OUTPUT STAGE WITH STV9379FA .................................................................................2
8.VIDEO OUTPUT AMPLIFIER TDA6108 ................................................................................................2
9.POWER SUPPLY (SMPS) .....................................................................................................................3
10.MICROCONTROLLER SDA55XX .......................................................................................................3
10.1.General Features ..........................................................................................................................3
10.2.External Crystal and Programmable Clock Speed ...................................................................3
10.3.Microcontroller Features .............................................................................................................3
10.4.Memory..........................................................................................................................................3
10.5.Display Features...........................................................................................................................3
10.6.Acquisition Features....................................................................................................................4
10.7.Ports ..............................................................................................................................................4
11.CLASS AB STEREO HEADPHONE DRIVER TDA1308 ....................................................................4
12.SAW FILTERS......................................................................................................................................4
13.IC DESCRIPTIONS ..............................................................................................................................5
13.1.LM317T ..........................................................................................................................................5
13.1.1.Description .............................................................................................................................5
13.1.2.Features..................................................................................................................................5
13.2.TDA1308T......................................................................................................................................5
13.2.1.General Description ..............................................................................................................5
13.2.2.Features..................................................................................................................................5
13.2.3.Pinning....................................................................................................................................6
13.3.MSP34X0G (MSP3410G) ..............................................................................................................6
13.3.1.Description .............................................................................................................................6
13.3.2.Features..................................................................................................................................7
13.3.3.Pin connections.....................................................................................................................7
13.4.VDP313xY......................................................................................................................................8
13.4.1.Introduction............................................................................................................................8
13.4.2.Features..................................................................................................................................9
13.4.3.Pin Connections and short descriptions ............................................................................9
13.5.TEA6415C....................................................................................................................................10
13.5.1.General Description ............................................................................................................10
13.5.2.Features................................................................................................................................10
13.5.3.Pinning..................................................................................................................................11
13.6.STV9379FA..................................................................................................................................11
13.6.1.Description ...........................................................................................................................11
13.6.2.Features................................................................................................................................11
13.6.3.Pinning..................................................................................................................................11
13.7.TDA7269A ...................................................................................................................................11
13.7.1.Description ...........................................................................................................................11
13.7.2.Features................................................................................................................................12
13.8.LM7800 (LM7805/LM7808) .........................................................................................................12
13.8.1.Description ...........................................................................................................................12
13.8.2.Features................................................................................................................................12
13.9.AT24C08 ......................................................................................................................................12
13.9.1.Description ...........................................................................................................................12
13.9.2.Features................................................................................................................................12
13.9.3.Pin Configurations ..............................................................................................................13
13.10.SDA5555....................................................................................................................................13
13.10.1.General definition ..............................................................................................................13
13.10.2.Features..............................................................................................................................13
13.11.MC44608....................................................................................................................................14
13.11.1.Description.........................................................................................................................14
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13.11.2.General Features ...............................................................................................................15
13.11.3.Pin Connections ................................................................................................................15
13.12.TCET1102G ...............................................................................................................................16
13.12.1.Description.........................................................................................................................16
13.12.2.Applications .......................................................................................................................16
13.12.3.Features..............................................................................................................................16
13.13.TDA9885T..................................................................................................................................16
13.13.1.General Description ..........................................................................................................16
13.13.2.Features..............................................................................................................................16
13.13.3.Pinning................................................................................................................................17
13.14.PI5V330......................................................................................................................................17
13.14.1.General Description ..........................................................................................................17
14.AK45 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS ...............................................18
14.1.SERVICE MENU ..........................................................................................................................18
14.2.ADJUST MENU ...........................................................................................................................18
14.3.OPTIONS MENU..........................................................................................................................21
Option 0. Video Processor Crystal Indication .............................................................................21
Option 1. (0x01) Video Processor Decoder Mode Register........................................................21
Option 2. (0x18) Video Processor Blanking Control ...................................................................21
Option 3. (0x19) Video Processor Cathode Drive Level .............................................................22
Option 4. ..........................................................................................................................................22
Option 5. CTI Avaliable, Mono AVL...............................................................................................22
Option 6. ..........................................................................................................................................22
Option 7. OPTIONHOTELACTIVE, PLL_VST, PIP Zoom Mode, PIP Position ...........................22
Option 8. Tube Size, Default Zoom Mode, IF Frequency ............................................................23
Option 9. Standard Available.........................................................................................................23
Option 10. Scart, Combfilter, Teletext, Language .......................................................................24
Option 11. PLL Tuner Control 1 Byte............................................................................................24
Option 12. PLL Tuner Control 2 Low Byte ...................................................................................24
Option 13. PLL Tuner Control 2 Mid Byte ....................................................................................25
Option 14. PLL Tuner Control 2 High Byte ..................................................................................25
Option 15. PLL Tuner VHF LOW ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo