akira 14TDS3/VE Скачать руководство пользователя страница 5

 

 

Model No: 14TDS3Ve 
Version 1.0

 

 

 
 

No Item 

Value Meaning 

No  Item 

Value  Meaning 

28 RGCN  16  OSD 

contrast 

minimum 

62 SELF 

AGC 

69* Self-diagnosis 

AGC 

29  VMO 

7C 

VCD data 0 

63 

SELF 
BRTC 

75* 

Self-diagnosis bright center 

30  VM 1 

00 

VCD data 1 

64 

SELF 
CNTC 

00* 

Self-diagnosis contrast center 

31 HPOS  0B  Horizontal 

position  65  SELF 

TNTC 

32* 

Self-diagnosis tint center 

32  VP 50  04 

50 Hz vertical center  66 

SELF 
COL 

23* 

Self-diagnosis color center 

33  HIT 

19 

50 Hz vertical size 

67 

OSD 

00 

OSD width adjustment 

34 HPS  02  50/60Hz 

horizontal 

center 

68 OPT  27  Option 

69 

MOD3 

07 Language 

70 ZOOM 

IN HIT 

3F 

Zoom in height 

71 ZOOM 

OUT 
HIT 

0b Zoom 

out 

height     

 

 

 
 

Note: 

1.  The items with * in value are very special, do not adjust them at random. The items(1-5) are 

used to debug white-black-balance of set. 

2.  The general secret code is 2175. 
3.  If you find the threadlike disturbance on the top of picture, please adjust the VM 2 in the items 

and make its value come to 34. 

4. 

When E PROM does not work, please exchange the same model chip with data that the 
manufacture has already input. 2

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Содержание 14TDS3/VE

Страница 1: ...C C Co o ol l lo o ou u ur r r T T TV V V S S Se e er r rv v vi i ic c ce e e M M Ma a an n nu u ua a al l l...

Страница 2: ...2 CHASSIS TB 1238 MODEL 14TDS3 VE...

Страница 3: ...3 Model No 14TDS3Ve Version 1 0 CONTENT TB 1238 SERIES I2 C BUS CONTROL INSTRUCTION 4 TYPICAL FAILURE ANALYSE 6 VARIOUS PARAMETERS OF INTEGRATED CIRCUIT 20 CIRCUIT DIAGRAM 22 EXPLODED VIEW 23...

Страница 4: ...C 00 50Hz pillow distortion correction 7 BRTC 30 Brighter center 41 DPCS 00 50 60Hz pillow distortion correction 8 COLC 50 Color center 42 KEY 00 50Hz keystone distortion 9 TNTC 40 Tint center 43 KEYS...

Страница 5: ...enter 33 HIT 19 50 Hz vertical size 67 OSD 00 OSD width adjustment 34 HPS 02 50 60Hz horizontal center 68 OPT 27 Option 69 MOD3 07 Language 70 ZOOM IN HIT 3F Zoom in height 71 ZOOM OUT HIT 0b Zoom out...

Страница 6: ...TYPICAL FAILURE ANALYSE 1 Three None no raster no picture no sound This failure is mainly caused by big power circuit such as power supply horizontal scanning vertical scanning The detail checking an...

Страница 7: ...s sent the power off signal Check if V706 is broken down 1V 0V Yes 0V 4 5 5 5V Cut off W320 Test other voltage such as 180V 24V and 12V V553 VD561 RP551 R 5 6 9 V 7 0 6 V 5 1 2 C513 VD515 V511 Check V...

Страница 8: ...small signal processing circuits Before checking these circuits a kind of practical test method is introduced It is called Signal input way The detail is described as follow W e can use the resistance...

Страница 9: ...if there is snow noise wave disturbance on the CRT via usi ng Signal input way by touching pin 6 and pin8 of N201 5V Check N203 L203 C239 N201 No Yes Observe if there is snow noise wave distur bance...

Страница 10: ...s the small signal circuit to work correctly with the picture on the CRT and we only check the sound signal processing and sound amplification circuit The repairing method B1 may be referred without p...

Страница 11: ...if there is the vo ice liking Ka ka in the loudspeaker via using Signal input way by touching pin1 and pin3 of N30 1 Hear if there is the vo ice liking Ka ka in the loudspeaker via using Signal input...

Страница 12: ...circuit does not work this kind of failure will happen In deflection yoke there only has horizontal sweeping The electron beam in the CRT only moves in the horizontal orientation so form this failure...

Страница 13: ...bnormal Normal Check VD 401 N4 01 Measuring the waveform on pin4 of N401 Check R259 C403 N401 0V 24V Abnormal Measuring the waveform on pin2 of N401 Normal Check N401 Normal Abnormal Check R402 L401 R...

Страница 14: ...d smoking inside the set Don t let your TV work for a long time as this failure appears Because the electron beam can not move in the horizontal orientation the failure should be in the horizontal def...

Страница 15: ...e The horizontal yoke is opened or not Repair CRT Yes Whether XS401 is opened No Check if there is bad solder between X S 4 0 1 a n d t h e m a i n b o a r d Yes Check L407 L408 VD411 C443 especial in...

Страница 16: ...rbance pulse is as small as possible 2 The clock pulse In TB 1238 circuit the clock pulse is generated by pin31 pin32 of N701 and a 8M crystal oscillator Television s remote control system also needs...

Страница 17: ...4 98V Check the voltage on the emitter of V705 4 98V Check R741 Check the voltage on the positive pole of VD 704 4 98V 4 98V 3 6V Check R753 VD704 3 6V Check R754 V705 R752 Check the voltage on the p...

Страница 18: ...use by the circuit of character generated and located Most of reasons are that the horizontal and vertical flyback pulse signals do not come to CPU We can judge this failure by measuring the wave of t...

Страница 19: ...s No Observe if there is oscillating wave on the pin28 29 of N701 Check L701 N701 No Yes Check the horizontal and vertical flyback pulse on the pin26 and pin 27 of N701 Check N701 Yes Check the wave o...

Страница 20: ...27 VOL 2 4V 2 5V 6 1V 4 6V 5 3V 1V 1 8V 3 9V 4 1V FUNC G OUT B OUT ABL V RAMP V FB V OUT V AGC SCL SDA PIN 28 29 30 31 32 33 34 35 36 VOL 9 3V 3 8V 0 4V 4V 2V 0V 1 3V 5 3V 3V FUNC H VCC ID CW FBP IN S...

Страница 21: ...A DATA PIN 19 20 21 22 23 24 25 26 27 VOL 0V 0V 0V 0V 0V 0V 0V 4 4V 4 8V FUNC SGV KARA ENA GND OSD R OSD G OSD B OSD Y HD VD PIN 28 29 30 31 32 33 34 35 36 VOL 5V 5V 0V 1 4V 2 2V 5V 0 6V 4 5V 4 8V FUN...

Страница 22: ...ed 5 Product safety should be considered when a component replacement is made in any area of a receiver The values of the components indicated by a mark in this circuit diagram have special Significan...

Страница 23: ...23 Model No 14TDS3Ve Version 1 0 EXPLODED VIEW...

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