DOWNLOAD Sharp 32LF-92H (serv.man2) Service Manual ↓ Size: 1.78 MB | Pages: 76 in PDF or view online for FREE

Model
32LF-92H (serv.man2)
Pages
76
Size
1.78 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / CTR
File
32lf-92h-sm2.pdf
Date

Sharp 32LF-92H (serv.man2) Service Manual ▷ View online

3
AK - 45
CHASSIS
 
TABLE OF CONTENTS 
 
1.INTRODUCTION
..............................................................................................................................6
 
2.TUNER
.................................................................................................................................................6
 
3.IF PART (TDA9885/86)
..................................................................................................................6
 
4.VIDEO SWITCH TEA6415
............................................................................................................7
 
5.MULTI STANDARD SOUND PROCESSOR
...........................................................................7
 
6.SOUND OUTPUT STAGE WITH TDA7269A
.........................................................................7
 
7.VERTICAL OUTPUT STAGE WITH STV9379FA
.................................................................7
 
8.VIDEO OUTPUT AMPLIFIER TDA6108
...................................................................................7
 
9.POWER SUPPLY (SMPS)
............................................................................................................8
 
10.MICROCONTROLLER SDA55XX
...........................................................................................8
 
10.1.General Features ..........................................................................................................................8
 
10.2.External Crystal and Programmable Clock Speed ...................................................................8
 
10.3.Microcontroller Features .............................................................................................................8
 
10.4.Memory..........................................................................................................................................8
 
10.5.Display Features...........................................................................................................................8
 
10.6.Acquisition Features....................................................................................................................9
 
10.7.Ports ..............................................................................................................................................9
 
11.CLASS AB STEREO HEADPHONE DRIVER TDA1308
.................................................9
 
12.SAW FILTERS
................................................................................................................................9
 
13.IC DESCRIPTIONS
.....................................................................................................................10
 
13.1.LM317T
....................................................................................................................................10
 
13.1.1.Description ...........................................................................................................................10
 
13.1.2.Features................................................................................................................................10
 
13.2.TDA1308T
...............................................................................................................................10
 
13.2.1.General Description ............................................................................................................10
 
13.2.2.Features................................................................................................................................10
 
13.2.3.Pinning..................................................................................................................................11
 
13.3.MSP34X0G (MSP3410G)
..................................................................................................11
 
13.3.1.Description ...........................................................................................................................11
 
13.3.2.Features................................................................................................................................12
 
13.3.3.Pin connections...................................................................................................................12
 
13.4.VDP313xY
..............................................................................................................................13
 
13.4.1.Introduction..........................................................................................................................13
 
13.4.2.Features................................................................................................................................14
 
13.4.3.Pin Connections and short descriptions ..........................................................................14
 
13.5.TEA6415C
..............................................................................................................................15
 
13.5.1.General Description ............................................................................................................15
 
13.5.2.Features................................................................................................................................15
 
13.5.3.Pinning..................................................................................................................................16
 
13.6.STV9379FA
............................................................................................................................16
 
13.6.1.Description ...........................................................................................................................16
 
13.6.2.Features................................................................................................................................16
 
13.6.3.Pinning..................................................................................................................................16
 
13.7.TDA7269A
..............................................................................................................................17
 
13.7.1.Description ...........................................................................................................................17
 
13.7.2.Features................................................................................................................................17
 
13.8.LM7800 (LM7805/LM7808)
...............................................................................................17
 
13.8.1.Description ...........................................................................................................................17
 
13.8.2.Features................................................................................................................................17
 
13.9.AT24C08
.................................................................................................................................17
 
13.9.1.Description ...........................................................................................................................17
 
13.9.2.Features................................................................................................................................17
 
13.9.3.Pin Configurations ..............................................................................................................18
 
4
AK - 45
CHASSIS
13.10.SDA5555
...............................................................................................................................18
 
13.10.1.General definition ..............................................................................................................18
 
13.10.2.Features..............................................................................................................................18
 
13.11.MC44608
...............................................................................................................................19
 
13.11.1.Description .........................................................................................................................19
 
13.11.2.General Features ...............................................................................................................20
 
13.11.3.Pin Connections ................................................................................................................20
 
13.12.TCET1102G
.........................................................................................................................21
 
13.12.1.Description .........................................................................................................................21
 
13.12.2.Applications .......................................................................................................................21
 
13.12.3.Features..............................................................................................................................21
 
13.13.TDA9885T
............................................................................................................................21
 
13.13.1.General Description ..........................................................................................................21
 
13.13.2.Features..............................................................................................................................21
 
13.13.3.Pinning................................................................................................................................22
 
13.14.PI5V330
.................................................................................................................................22 
13.14.1.General Description ..............................................................................................................22
 
14.AK45 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS
.........................23
 
14.1.SERVICE MENU ..........................................................................................................................23
 
14.2.ADJUST MENU ...........................................................................................................................23
 
14.3.OPTIONS MENU..........................................................................................................................35
 
Option 0. Video Processor Crystal Indication .............................................................................35
 
Option 1. (0x01) Video Processor Decoder Mode Register........................................................35
 
Option 2. (0x18) Video Processor Blanking Control ...................................................................35
 
Option 3. (0x19) Video Processor Cathode Drive Level .............................................................36
 
Option 4. ..........................................................................................................................................36
 
Option 5. CTI Available, Mono AVL...............................................................................................36
 
Option 6. ..........................................................................................................................................36
 
Option 7. OPTIONHOTELACTIVE, PLL_VST, PIP Zoom Mode, PIP Position ...........................36
 
Option 8. IF Frequency...................................................................................................................37
 
Option 9. Standard Available.........................................................................................................37
 
Option 10. Scart, Combfilter, Teletext, Language .......................................................................38
 
Option 11. PLL Tuner Control 1 Byte............................................................................................38
 
Option 12. PLL Tuner Control 2 Low Byte ...................................................................................38
 
Option 13. PLL Tuner Control 2 Mid Byte ....................................................................................39
 
Option 14. PLL Tuner Control 2 High Byte ..................................................................................39
 
Option 15. PLL Tuner VHF LOW – VHF HIGH Crossover Low Byte ..........................................39
 
Option 16. PLL Tuner VHF LOW – VHF HIGH Crossover High Byte .........................................39
 
Option 17. PLL Tuner VHF HIGH – UHF Crossover Low Byte ...................................................39
 
Option 18. PLL Tuner VHF HIGH – UHF Crossover High Byte...................................................39
 
Option 19. PIP PLL Tuner Control 1 Byte.....................................................................................40
 
Option 20. PIP PLL Tuner Control 2 Low Byte ............................................................................40
 
Option 21. PIP PLL Tuner Control 2 Mid Byte .............................................................................40
 
Option 22. PIP PLL Tuner Control 2 High Byte............................................................................40
 
Option 23. PIP PLL Tuner VHF LOW – VHF HIGH Crossover Low Byte ...................................40
 
Option 24. PIP PLL Tuner VHF LOW – VHF HIGH Crossover High Byte...................................40
 
Option 25. PIP PLL Tuner VHF HIGH – UHF Crossover Low Byte.............................................41
 
Option 26. PIP PLL Tuner VHF HIGH – UHF Crossover High Byte............................................41
 
Option 27. Language Available 1 ..................................................................................................41
 
Option 28. Language Available 2 ..................................................................................................41
 
Option 29. Language Available 3 and Zoom Mode Available ....................................................41
 
Option 30. Country .........................................................................................................................42
 
Option 31. Prescaler MSP FM (AVL=OFF)....................................................................................42
 
Option 32. Prescaler MSP NICAM (AVL=OFF) .............................................................................42
 
Option 33. Prescaler MSP SCART (AVL=OFF) ............................................................................43
 
Option 34. Prescaler MSP I2S (AVL=OFF)....................................................................................43
 
Option 35. Not used........................................................................................................................43
 
Option 36. Not used........................................................................................................................43
 
Option 37. Reserved for USA ........................................................................................................43
 
Option 38. TV Teletext Mode Selection, Child Lock, Equalizer Country...................................43
 
5
AK - 45
CHASSIS
Option 39. Personal Preference Equalizer Band 1 ......................................................................44
 
Option 40. Personal Preference Equalizer Band 2 ......................................................................44
 
Option 41. Personal Preference Equalizer Band 3 ......................................................................44
 
Option 42. Personal Preference Equalizer Band 4 ......................................................................44
 
Option 43. Personal Preference Equalizer Band 5 ......................................................................44
 
Option 44. Sound Effect (Standard; Music; Speech; Jazz; Pp) .................................................44
 
Option 45. Volume Offset Left .......................................................................................................44
 
Option 46. Volume Offset Right ....................................................................................................44
 
Option 47. Volume Offset Center ..................................................................................................45
 
Option 48. Volume Offset Rear......................................................................................................45
 
Option 49. Surround Delay ............................................................................................................45
 
Option 50. FM Prescaler.................................................................................................................45
 
Option 51. NICAM Prescaler ..........................................................................................................45
 
Option 52. Scart Input Prescaler ...................................................................................................45
 
Option 53. I2S Prescaler ................................................................................................................45
 
Option 54. Scart Output Prescaler ................................................................................................45
 
Option 55. Speaker Setup  .............................................................................................................46
 
Option 56. Audio Options Available Or Not .................................................................................46
 
Option 57. Stereo Threshold .........................................................................................................46
 
Option 58. MSP Audio Flags..........................................................................................................47
 
Option 59. NICAM Threshold.........................................................................................................47
 
Option 60. Power Delay Time ........................................................................................................47
 
14.4.OPTION TABLE RECOMMENDED VALUES.............................................................................50
 
14.5.SCREEN ADJUSTMENT (FBT SCREEN) ..................................................................................52
 
14.6.GEOMETRY ADJUSTMENT .......................................................................................................53
 
4:3 FORMATS..................................................................................................................................53
 
16:9 FORMATS................................................................................................................................54
 
15.BLOCK DIAGRAM
......................................................................................................................61
 
16.CIRCUIT DIAGRAMS
.................................................................................................................62 
17. HOW TO UPDATE THE TECHNICAL INFORMATION
 ………………………………… 73
 
17.1. HOW TO UPDATE THE TECHNICAL INFORMATION APPEARED ON THIS SERVICE  
         MANUAL (AND RELATIVES) 
....................................................................................................73
 
17.2. NVM / EEPROM RECORDER ....................................................................................................73
 
17.3. CHASSIS LABEL INFORMATION.............................................................................................73
 
17.4. CODE BAR LABEL INFORMATION..........................................................................................74
6
AK - 45
CHASSIS
1.INTRODUCTION 
11AK45 is a 50Hz colour television capable of driving 24” + CRT sizes (beginning from 24” 16:9 up to 
33”). 
The chassis is capable of operation in PAL, SECAM, NTSC (playback) colour standards and multiple 
transmission standards as B/G, D/K, I/I’, and L/L´. 
Sound system output is supplying 2x10W (10%THD) for left and right outputs of 8ohm speakers. 
TV supports FASTTEXT. It is possible to decode transmissions including high graphical data. 
The chassis is equipped with three full EuroScarts; only one of them supports RGB input, one 
headphone output, one FAV input, one SVHS input (via SCART) 
 
2.TUNER 
The hardware and software of the TV is suitable for tuners, supplied by different companies, which are 
selected from the Service Menu. These tuners can be combined VHF, UHF tuners suitable for CCIR 
systems B/G, H, L, L´, I/I´, and D/K. The tuning is available through the digitally controlled I
2
C bus 
(PLL). Below you will find info on one of the Tuners in use. 
 
General description of UV1316: 
The UV1316 tuner belongs to the UV 1300 family of tuners, which are designed to meet a wide range 
of applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L’, I and I’. The 
low IF output impedance has been designed for direct drive of a wide variety of SAW filters with 
sufficient suppression of triple transient.  
 
Features of UV1316: 
1.  Member of the UV1300 family small sized UHF/VHF tuners 
2.  Systems CCIR: B/G, H, L, L’, I and I’; OIRT: D/K 
3.  Digitally controlled (PLL) tuning via I
2
C-bus 
4.  Off-air channels, S-cable channels and Hyperband 
5.  World standardized mechanical dimensions and world standard pinning 
6. Compact 
size 
7.  Complies to “CENELEC EN55020” and “EN55013” 
 
Pinning: 
1. 
Gain control voltage (AGC)  : 
4.0V, Max: 4.5V 
2. Tuning 
voltage 
3. 
I²C-bus address select   
Max: 5.5V 
4. 
I²C-bus serial clock  
 
Min:-0.3V, Max: 5.5V 
5. 
I²C-bus serial data   
 
Min:-0.3V, Max: 5.5V 
6. Not 
connected 
7. 
PLL supply voltage  
 
5.0V, Min: 4.75V, Max: 5.5V 
8. ADC 
input 
9. 
Tuner supply voltage 
 
33V, Min: 30V, Max: 35V 
10.  Symmetrical IF output 1 
11.  Symmetrical IF output 2 
 
3.IF PART (TDA9885/86) 
The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal 
PLL.  
The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL 
Both devices can be used for TV, VTR, PC and set-top box applications. 
The following figure shows the simplified block diagram of the integrated circuit.  
The integrated circuit comprises the following functional blocks:  
VIF amplifier, Tuner and VIF-AGC, VIF-AGC detector, Frequency Phase-Locked Loop (FPLL) detector, VCO 
and divider, Digital acquisition help and AFC, Video demodulator and amplifier, Sound carrier trap, SIF 
amplifier, SIF-AGC detector, Single reference QSS mixer, AM demodulator, FM demodulator and acquisition 
help, Audio amplifier and mute time constant, I
2
C-bus transceivers and MAD (module address), Internal 
voltage stabilizer. 
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  • Here you can View online or download the Service Manual for the Sharp 32LF-92H (serv.man2) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp 32LF-92H (serv.man2) CTR. Information contained in Sharp 32LF-92H (serv.man2) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.