Read Sharp 28LF-94H Service Manual online
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AK - 53
CHASSIS
PAL
B/G, I
/ SECAM
L/L’, B/G, D/K
SYSTEM COLOUR TELEVISION
SERVICE MANUAL
In the interests of user safety (required by safety regu-
lations in some countries) the set should be restored
to its original condition and only parts identical to
those specified should be used.
lations in some countries) the set should be restored
to its original condition and only parts identical to
those specified should be used.
CONTENTS
TABLE OF CONTENTS ....................................................................................................... 3
INTRODUCTION .................................................................................................................. 5
CIRCUIT DESCRIPTIONS ................................................................................................... 6
INTEGRATED CIRCUIT DESCRIPTIONS ....................................................................... 12
SERVICE MODE ADJUSTMENTS ...................................................................................... 36
BLOCK DIAGRAM ................................................................................................................ 52
CIRCUIT DIAGRAMS ..................................................................................................... 54
HOW TO UPDATE THE TECHNICAL INFORMATION ...................................................... 70
INTRODUCTION .................................................................................................................. 5
CIRCUIT DESCRIPTIONS ................................................................................................... 6
INTEGRATED CIRCUIT DESCRIPTIONS ....................................................................... 12
SERVICE MODE ADJUSTMENTS ...................................................................................... 36
BLOCK DIAGRAM ................................................................................................................ 52
CIRCUIT DIAGRAMS ..................................................................................................... 54
HOW TO UPDATE THE TECHNICAL INFORMATION ...................................................... 70
SHARP CORPORATION
SE
00
AK53CHA00
Issued: 7
th
July 2004
CHASSIS
AK-53
2
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CHASSIS
Use this page to keep any special servicing information as Technical Report (Bulletin), Technical Information, etc.
If only part number changes are required, just change part number directly the part number in the Parts Listing Section.
If you need more information, please refer to the Technical Report (Bulletin).
If only part number changes are required, just change part number directly the part number in the Parts Listing Section.
If you need more information, please refer to the Technical Report (Bulletin).
SERVICE MANUAL UPDATE LOG SHEET
Part No.
Technical Report No.
Technical Bulletin No.
Technical Bulletin No.
Cause / Solution
Page No.
Application
Data /Serial No.
Data /Serial No.
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CHASSIS
TABLE OF CONTENTS
0. OVERALL BLOCK DIAGRAM ........................................................................................................... 5
1. INTRODUCTION ................................................................................................................................ 5
CIRCUIT DESCRIPTIONS...................................................................................................................... 6
2. TUNER SPECIFICATION ................................................................................................................... 6
3. IF/AUDIO&VIDEO SWITCHING/AD CONVERTER PART................................................................. 7
(PNX3000 (CALLED AS MPIF)) ............................................................................................................. 7
4. DIGITAL TV PROCESSOR (PNX300X (CALLED AS ADOC)) ......................................................... 9
5. SOUND OUTPUT STAGE WITH TDA7480L ................................................................................... 10
6. VERTICAL OUTPUT STAGE WITH TDA8177F .............................................................................. 10
7. VIDEO OUTPUT AMPLIFIER TDA6108JF ...................................................................................... 10
8. POWER SUPPLY PART ................................................................................................................... 10
9. SERIAL ACCESS 64K EEPROM ..................................................................................................... 11
10. HEADPHONE AMPLIFIER STAGE ................................................................................................ 11
11. SAW FILTER SPECIFICATION ...................................................................................................... 11
12. IC DESCRIPTIONS......................................................................................................................... 12
1. INTRODUCTION ................................................................................................................................ 5
CIRCUIT DESCRIPTIONS...................................................................................................................... 6
2. TUNER SPECIFICATION ................................................................................................................... 6
3. IF/AUDIO&VIDEO SWITCHING/AD CONVERTER PART................................................................. 7
(PNX3000 (CALLED AS MPIF)) ............................................................................................................. 7
4. DIGITAL TV PROCESSOR (PNX300X (CALLED AS ADOC)) ......................................................... 9
5. SOUND OUTPUT STAGE WITH TDA7480L ................................................................................... 10
6. VERTICAL OUTPUT STAGE WITH TDA8177F .............................................................................. 10
7. VIDEO OUTPUT AMPLIFIER TDA6108JF ...................................................................................... 10
8. POWER SUPPLY PART ................................................................................................................... 10
9. SERIAL ACCESS 64K EEPROM ..................................................................................................... 11
10. HEADPHONE AMPLIFIER STAGE ................................................................................................ 11
11. SAW FILTER SPECIFICATION ...................................................................................................... 11
12. IC DESCRIPTIONS......................................................................................................................... 12
12.1. TDA6108JF (IC900) ................................................................................................................. 12
12.1.1. General Description ........................................................................................................... 12
12.1.2. Features ............................................................................................................................. 12
12.1.3. Pinning ............................................................................................................................... 13
12.1.2. Features ............................................................................................................................. 12
12.1.3. Pinning ............................................................................................................................... 13
12.2. PNX3000 (IC400) ..................................................................................................................... 13
12.2.1. General Description ........................................................................................................... 13
12.2.2. Features ............................................................................................................................. 13
12.2.3. Pin Description ................................................................................................................... 14
12.2.2. Features ............................................................................................................................. 13
12.2.3. Pin Description ................................................................................................................... 14
12.3. CS51033 (IC 104) .................................................................................................................... 17
12.3.1. General Description ........................................................................................................... 17
12.3.2. Features ............................................................................................................................. 17
12.3.3. Pin Description ................................................................................................................... 17
12.3.2. Features ............................................................................................................................. 17
12.3.3. Pin Description ................................................................................................................... 17
12.4. SDRAM 64MBIT (IC315) ......................................................................................................... 18
12.4.1. General Description ........................................................................................................... 18
12.4.2. Features ............................................................................................................................. 18
12.4.3. Pin Description ................................................................................................................... 18
12.4.2. Features ............................................................................................................................. 18
12.4.3. Pin Description ................................................................................................................... 18
12.5. FLASH (IC 314) ....................................................................................................................... 19
12.5.1. General Description ........................................................................................................... 19
12.5.2. Features ............................................................................................................................. 19
12.5.3. Pin/Ball Descriptions .......................................................................................................... 20
12.5.2. Features ............................................................................................................................. 19
12.5.3. Pin/Ball Descriptions .......................................................................................................... 20
12.6. NE56610-29 (RESET IC) (IC 316) ........................................................................................... 21
12.6.1. General Description ........................................................................................................... 21
12.6.2. Features ............................................................................................................................. 21
12.6.3. Pin Description ................................................................................................................... 21
12.6.2. Features ............................................................................................................................. 21
12.6.3. Pin Description ................................................................................................................... 21
12.7. STS5PF30L (IC105) ................................................................................................................. 22
12.7.1. Description ......................................................................................................................... 22
12.7.2. Features ............................................................................................................................. 22
12.7.2. Features ............................................................................................................................. 22
12.8. PNX300X (IC313) ..................................................................................................................... 22
12.8.1. General Description of the Digital One Chip System ........................................................ 22
12.8.2. Features of the ADOC Processor ...................................................................................... 23
12.8.2. Features of the ADOC Processor ...................................................................................... 23
12.9. M24C64WBN6 (IC309) ............................................................................................................ 29
12.9.1. Features ............................................................................................................................. 29
12.9.2. Description ......................................................................................................................... 29
12.9.2. Description ......................................................................................................................... 29
12.10. TDA7480L (IC401,IC402) ...................................................................................................... 29
12.10.1. Description ....................................................................................................................... 29
12.10.2. Features ........................................................................................................................... 29
12.10.3. Pin Functions ................................................................................................................... 29
12.10.2. Features ........................................................................................................................... 29
12.10.3. Pin Functions ................................................................................................................... 29
12.11. LM7808 (IC803) ..................................................................................................................... 30
12.11.1. Description ....................................................................................................................... 30
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12.11.2. Features ........................................................................................................................... 30
12.12. LM1086 (IC103) ..................................................................................................................... 30
12.12.1. Description ....................................................................................................................... 30
12.12.2. Features ........................................................................................................................... 30
12.12.3. Connection Diagram ........................................................................................................ 31
12.12.2. Features ........................................................................................................................... 30
12.12.3. Connection Diagram ........................................................................................................ 31
12.13. TDA8177F (IC100) ................................................................................................................. 31
12.13.1. Description ....................................................................................................................... 31
12.13.2. Features ........................................................................................................................... 31
12.13.3. Pin connections ............................................................................................................... 31
12.13.4. Block Diagram ................................................................................................................. 32
12.13.2. Features ........................................................................................................................... 31
12.13.3. Pin connections ............................................................................................................... 31
12.13.4. Block Diagram ................................................................................................................. 32
12.14. TCET1102G (IC801) .............................................................................................................. 32
12.14.1. Description ....................................................................................................................... 32
12.14.2. Applications ..................................................................................................................... 32
12.14.3. Features ........................................................................................................................... 32
12.14.2. Applications ..................................................................................................................... 32
12.14.3. Features ........................................................................................................................... 32
12.15. MC44608 (IC804) ................................................................................................................... 32
12.15.1. Description ....................................................................................................................... 32
12.15.2. General Features ............................................................................................................. 33
12.15.3. Pin Connections ............................................................................................................... 33
12.15.4. Pin Function description .................................................................................................. 34
12.15.2. General Features ............................................................................................................. 33
12.15.3. Pin Connections ............................................................................................................... 33
12.15.4. Pin Function description .................................................................................................. 34
12.16. TL431 (Q816) ......................................................................................................................... 34
12.16.1. Description ....................................................................................................................... 34
12.16.2. Features ........................................................................................................................... 34
12.16.3. Pin Configurations ........................................................................................................... 34
12.16.2. Features ........................................................................................................................... 34
12.16.3. Pin Configurations ........................................................................................................... 34
12.17. TFMS5360 .............................................................................................................................. 35
12.17.1. Description ....................................................................................................................... 35
12.17.2. Features ........................................................................................................................... 35
12.17.2. Features ........................................................................................................................... 35
13. AK53 CHASSIS MANUAL ADJUSTMENTS PROCEDURE ......................................................... 35
13.1. PRELIMINARY ......................................................................................................................... 35
13.2. SYSTEM VOLTAGE ADJUSTMENTS ..................................................................................... 35
13.3. AFC ADJUSTMENTS .............................................................................................................. 35
13.4. FOCUS ADJUSTMENTS ......................................................................................................... 35
13.5. SCREEN ADJUSTMENT (VG2 ALIGNMENT) ........................................................................ 36
13.6. AGC (AUTOMATIC GAIN CONTROL) .................................................................................... 36
13.2. SYSTEM VOLTAGE ADJUSTMENTS ..................................................................................... 35
13.3. AFC ADJUSTMENTS .............................................................................................................. 35
13.4. FOCUS ADJUSTMENTS ......................................................................................................... 35
13.5. SCREEN ADJUSTMENT (VG2 ALIGNMENT) ........................................................................ 36
13.6. AGC (AUTOMATIC GAIN CONTROL) .................................................................................... 36
14. AK53 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS ............................................ 36
14.1. OPTIONS ................................................................................................................................. 36
14.2. GEOMETRY ............................................................................................................................. 39
14.2. GEOMETRY ............................................................................................................................. 39
14.2.1. EW ALIGNMENT ............................................................................................................... 39
14.3. VIDEO ALIGNMENTS.............................................................................................................. 46
14.3.1. MAIN AGC ......................................................................................................................... 46
14.3.2. PIP AGC ............................................................................................................................ 46
14.3.3. VIDEO ADJUST ................................................................................................................. 46
14.3.2. PIP AGC ............................................................................................................................ 46
14.3.3. VIDEO ADJUST ................................................................................................................. 46
14.3.3.1. WHITE DRIVE ............................................................................................................. 46
14.3.3.1.1. Normal ................................................................................................................. 46
14.3.3.1.2. Warm ................................................................................................................... 47
14.3.3.1.3. Cool ..................................................................................................................... 47
14.3.3.1.2. Warm ................................................................................................................... 47
14.3.3.1.3. Cool ..................................................................................................................... 47
14.3.3.2. MIN BRIGHTNESS ..................................................................................................... 47
14.3.3.3. MIN CONTRAST ......................................................................................................... 47
14.3.3.4. WHITE BALANCE ADJUSTMENT .............................................................................. 47
14.3.3.3. MIN CONTRAST ......................................................................................................... 47
14.3.3.4. WHITE BALANCE ADJUSTMENT .............................................................................. 47
14.3.4. COLOR ADJUSTMENT ..................................................................................................... 48
14.3.4.1. Y DEL SEC BG, Y DEL SEC DK, Y DEL SEC L, Y DEL SEC AV:.............................. 48
14.3.4.2. Y DEL PAL BG, Y DEL PAL DK, Y DEL PAL I, Y DEL PAL M, Y DEL PAL AV: .......... 48
14.3.4.3. VIDDEC QTHR, VIDDEC STHR ................................................................................. 48
14.3.4.2. Y DEL PAL BG, Y DEL PAL DK, Y DEL PAL I, Y DEL PAL M, Y DEL PAL AV: .......... 48
14.3.4.3. VIDDEC QTHR, VIDDEC STHR ................................................................................. 48
14.4. SOUND RELATED OPTIONS .................................................................................................. 49
14.5. FACTORY SETTINGS.............................................................................................................. 50
14.5. FACTORY SETTINGS.............................................................................................................. 50
15. MENU LANGUAGES ..................................................................................................................... 51
16. BLOCK DIAGRAM ......................................................................................................................... 52
17. CIRCUIT DIAGRAMS ..................................................................................................................... 54
18. HOW TO UPDATE THE TECHNICAL INFORMATION .................................................................. 70
16. BLOCK DIAGRAM ......................................................................................................................... 52
17. CIRCUIT DIAGRAMS ..................................................................................................................... 54
18. HOW TO UPDATE THE TECHNICAL INFORMATION .................................................................. 70