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KV-25FX30K
Service Manual Страница: 29

Sony KV-25FX30K [29/50] Kv 25 29fx30

35 36 37

KV-25/29FX30

[9-927-405-01]

A [ POWER SUPPLY, DEFLECTION, AUDIO AMPLIFIER (Page 1/2) ]

Содержание

Chassis 1
Kv 25fx30b 1
Kv 25fx30e 1
Kv 25fx30k 1
Kv 29fx30b 1
Kv 29fx30e 1
Kv 29fx30k 1
Service manual fe 1
Table of contents 2
Pin connector 4
Rear connection panel front connection panel 4
S video socket 4
Fe 2 self diagnostic software 5
Section 6
Switching on the tv and automatically tuning 6
Introducing and using the menu system 7
Menu guide 7
Level 1 level 2 level 3 function 8
Level 1 level 2 level 3 function 9
Connecting a vcr 10
Connecting a vcr that supports smartlink 10
Connecting optional equipment 10
Fastext 10
If you have connected a decoder to a vcr which supports smartlink feature 10
Teletext 10
Specifications 11
Troubleshooting 11
Disassembly 12
Section 12
Turn up one side of the rubber cap in the direction indicated by the arrow a 1 2 using a thumb pull up the rubber cap firmly in the direction indicated by the arrow b 14
When one side of the rubber cap is separated from the anode button the anode cap can be removed by turning up the rubber cap and pulling it up in the direction of the arrow c 14
1 beam landing 16
Section 16
Set up adjustments 16
2 convergence 17
Tilt direction 18
3 focus adjustment 19
4 screen g2 white balance 19
1 electrical adjustments 20
Circuit adjustments 20
Section 4 20
B out waveform 21
Deflection system adjustment 21
Enter into the geometry service menu 2 select and adjust each item in order to obtain the optimum image 21
Note there should be no need to adjust the agc as this is pre adjusted during manufacture of the frontend if the agc does need adjustment then follow steps 1 to 4 below 21
Print side of a board 21
Receive a pal colour bar signal 2 connect an oscilloscope to pin 5 of cn003 a board 3 enter into the service service menu 4 adjust the sub colour data so that the cyan magenta and blue colour bars are of equal levels as indicated below 21
Receive a signal of 62dbuv 75 ohm terminated via the tuner antenna socket 2 connect a voltmeter to pin1 of tu101 print side of a board or to the agc pin of cn001 mount side of a board 3 confirm that the agc voltage is 3 volts 0 volts 4 if adjustment is required then re adjust the agc variable resistor located at the top rear of the frontend to obtain a voltage of 3 v 0 v 21
Same level 21
Sub colour adjustment 21
Tuner agc adjustment 21
0 0 5 o t e m ulo v e n o h p d a e h r e k a e p s t e s 22
0 0 8 o t e m ulo v e n o h p d a e h r e k a e p s t e s 22
0 5 3 o t e m ulo v e n o h p d a e h r e k a e p s t e s 22
0 5 6 o t e m ulo v e n o h p d a e h r e k a e p s t e s 22
0 e d o m g nie g a 22
0 ff o e d o m t t 22
0 m u m ini m e r u tci p 22
0 m u m ix a m e r u tci p 22
0 n oitid n o c g nip pih s 22
1 0 5 le v el e r u tci p 22
1 elb a si d elb a n e e d o m y r o tc a f 22
1 t n e m ts ujd a e r u tcip b u s 22
1 t n e m ts ujd a n oitis o p h tx e t 22
1 t n e m ts ujd a r u olo c b u s 22
1 t n e m ts ujd a s s e n t h gir b b u s 22
1 ts e t lio c n oit a t o r 22
2 l b n oit a nits e d 22
2 r k e d a n oit a nits e d 22
2 test mode 1 22
2 u n oit a nits e d 22
3 test mode 2 22
Test mode 1 is available by pressing the test button once osd t appears the functions described below are available by selecting the indicated keys the t is released automatically after each command is executed 22
Test mode 2 is available by pressing the test button twice osd tt appears the functions described below are available by selecting the two numbers to release the test mode 2 press 00 10 20 twice or switch the tv set into stand by mode in tt menu mode it is possible to remove the menu from the screen by pressing the speaker off button once pressing the speaker off button a second time will cause the menu to reappear the function is kept even when the menu is not displayed on screen 22
1 block diagrams 1 23
Dy assy 23
3 schematic diagrams and printed wiring boards 24
A board 24
Cvm board 24
Les composants identifiés par une trame et par une marque sont d une importance critique pour la sécurité ne les remplacer que par des pièces de numéro spécifié specified 24
Neck assy 24
Reference information 24
S1 board 24
The components identified by shading and marked are critical for safety replace only with the part numbers specified in the parts list 24
C board waveforms 25
C boardwaveforms 25
Ic voltage table 25
R g b out 25
Difference table 26
Velocity modulation 26
A b c d e f g h i j k l m 28
Difference table 28
Printed wiring board 28
Semiconductor location table 28
Semiconductor voltage table ic voltage table 28
Kv 25 29fx30 29
A board waveforms 30
Power supply deflection audio amplifier page 2 2 30
4 semiconductors 31
5 ic block diagrams 33
A board ic1201 tda7497 33
A board ic401 ic531 lm393dt 33
A board ic601 mcz3001d 33
A board ic604 ba41w12st v5 33
1 chassis 34
Section 6 exploded views 34
2 picture tube 35
Section 7 electrical parts list 36
A f4 a 40
C d vm 46
927 405 01 50
A new tv repair assistance tool that combines ease of use and powerful pc software tools to allow you to save valuable time during many tv repairs 50
English 01ep7140 1 printed in u k 2001 50
Partnumbers trace starter kit trace interface software 9 948 320 70 trace software for users of the i 2 c link interface 9 948 340 80 trace ir add on ir interface remote commander software 9 948 320 80 50
Pc requirements ibm compatible pc with operating system windows95 windows98 or windowsnt 50
Sony corporation 50
Sony uk service promotions dept 50
The interface is powered by a standard 9 v pp3 battery for portable use and can also be powered by an external 9v 25ma dc power supply 50
The trace interface connects to the pc s serial port it provides connection to the tv s i 2 c bus and can be provided with an infrared transmitter optional 50

Sony KV-25FX30K [29/50] Kv 25 29fx30

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