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more than 5mm

JP436

Service Adjustments

-16-

VOL +

VOL -

CH +

MENU

VOL +

VOL -

CH +

CH -

2

1

T4AL250V

VOL +

VOL -

CH +

CH -

MENU

W601

E

E

E

E

E

1

2

4

3

E

E

R/G

16

10

71

1

7

81

4

PS601A

JP601

RL601

KE-2

KE-1

KE

D641

R620

F601A

F601B

R602-H1

SW190

SW1902

SW1905

SW1904

SW1903

KH

R602-H4

R602B

R602-H2

R602

R601

L601

C601A

C601

C606

C605

C608

D606

D605

D608

SW601-H4

SW601-H2

KG-1

KG-2

VA601

D607

D1902

J032

C610

R103

R652

C651

C609

Q612

R643

R642

R641

R624

R623

R622

R619

R616

R614

R613

R611

Q642

Q641

Q625

Q611

D616

C611

R633

C614

D615

D614

R615

D610

L612

D643

D611

L613

R627

D619

R631

D617

L616

R628

R629

C629

C628

D652

C654

R653

C657

R665

R664

C693

Q693

C658

C613

R621

R625

R626

Q613-H6

Q613

C615

L615

R632

L614

R644

C644

C639

C656

L651

L653

C655

D651

D654

R661

C617

J010

J012

D469A

C6

J060

J061

J062

J063

J064

C66

J065

D661

R663

R695

L654

Q691

J069

J079

JP652

R662

L601-H2

L601-H1

L601-H4

L601-H3

C609-H1

J142

J009

J144

C618

D653

R1907

D1901

C652

R602A

PS601

R602-H3

R602-H5

R602-H6

R602-H7

R602-H8

R650

D650

D639

R639

C609-H2

A1901

C1902

VR651

J135

T611A

T611B

J165

CONVERTER

TRANS.

+B ADJ.

TP +B +130V

E

B

33

T471-H1

T471-H2

T471-H4

T471-H5

T471-H6

T471-H7

T471-H10

T471

D485

R488

R481

C423

C423-H1

C423-H2

C423-H3

D438

C420

C420-H1

C420-H2

C

420-H3

C423A

C420B

C424A

C424

D439

C422

C422A

JP436

L431

C425

C425A

KQ

C486

C471

C442A

L442

431

R485

C424-H1

C425-H1

C424-H3

C425-H3

KDY-1

C442-

C442-H3

C442-H1

C

L462H2

C

42

0A

C420A-H2

T471-H9

1

4

KDY

T471A

Q432-H5

Q432-H4

Q432-H2

Q432

T471-H8

Q432-H3

Q432-H1

C487

1A

JP487

JP486

C486A

T471-H11

T471-H3

R487

C420A-H1

(FBT)

H-OUT

C

Service Adjustment-4

Horizontal Width Adjustment

1. Receive a monochrome circular pattern.

2. Set the brightness and contrast to maximum.

3. If the picture is too wide, or narrow, cut or short “JP436”

on the main unit. When JP436 is shorted, the horizontal
width increase. When JP436 is cut, the horizontal width
decrease.

Important note: When the JP436 is cut, it’s gap must be 

more than 5mm to prevent sparks.

HORIZ. WIDTH AND HIGH VOLTAGE CHECK

1. Receive the monochrome circular pattern.
2. Set the brightness to normal and contrast to maximum.
3. Adjust the focus control on the F.B.T. for the best focus

on the screen centre.

FOCUS ADJUSTMENT

FOCUS VR (Upper side)

This TV set has a built-in power supply protection circuit.
It is provided to protect the TV set in case of a power 
supply circuit malfunctions. When something abnormality
occurs during TV reception, the TV set goes to the stand-
by mode.

When an abnormality occurs during TV reception, it
causes pin 27 of the CPU to go continually Low volt-
age for about one second. The CPU detects that this
has occurred and outputs the signal from pin 31 to
switch off the power supply lines.

Releasing the protective circuit and restor-
ing power supply

To release the protective circuit and restore power supply,
turn the power to the TV set OFF and then ON again via
either the main power switch or the ON-OFF button on the
remote control. This will work only if the power supply trou-
ble was temporary. If there is permanent trouble such as a
damaged circuit, power cannot be restored and the circuit
will have to be repaired.

Protection Circuit

F.B.T.

1. Connect a DC voltmetre to TP-”+B +130V” and the 

ground. Set the +B adjustment control (VR651) to 
middle range.

2. Set the brightness to normal and contrast to maximum.
3. Tune the receiver to an active channel and synchro-

nized picture.

4. B voltage to 130± 0.5 volt DC by using VR651.

+B POWER SUPPLY ADJUSTMENT

VR651

TP +B +130V

High Voltage Check

Note: +B (+130V) Voltage Adj. and Grayscale Adjustment

must be completed before attempting High Voltage Check.

4. Connect high voltage voltmeter negative lead to ground,

and c lead to anode of picture tube.

5. Tune receiver to an active channel and confirm TV is 

operating properly.

6. The high voltage must be 25KV ± 1KV and less than 

28KV at 0 beam current (Brightness and contrast 
minimum setting).

Note: If the picture tube is replaced, check the high 

voltage. The horiz. width adjustment affects the high
voltage. Therefore, re-check the high voltage.

Summary of Contents for TVP-2105AS

Page 1: ...specifi cation table Specifications Power Source AC220V 50Hz 60Hz Receiving System PAL M M N N NTSC M M Channel Coverage Antenna mode VHF CH02 CH13 UHF CH14 CH69 CATV mode VHF band CH01 CH13 Mid band...

Page 2: ...eiver is the picture tube The picture tube is specially con structed to limit X RADIATION emissions For continued X RADIATION protection the replacement tube must be the same type as the original incl...

Page 3: ...VIDEO IN K1001 K1002 REAR AV IN FRONT AV IN VIDEO VIDEO A L A L A R A R 19 20 21 R G B K1921 12 8 AC POWER CIRCUIT CONVERTER TRANS 130V MAIN HIGH 20V AUDIO 12V MAIN LOW 24V VERT 9V IC202 REG IC 5V 2...

Page 4: ...SET IN RESET LOW KEY SWITCH KEY SWITCH IN RC PRE AMP RC SIGNAL IN RELAY ON OFF OUT FOR DEGAUSSING ON HIGH LED ON TIMER LED OUT ON LOW IC3401 MTS POWER ON OFF OUT GREEN LED RED POWER CIRCUIT SDA SCL A1...

Page 5: ...MP V C VCC 5V 46 47 48 49 50 A2C PLL 51 52 53 54 Audio Output FM Output Selected Audio Output PIF AGC RF AGC Output PIF Input1 PIF Input 2 IF Ground IF Vcc FM Filter AFT Output Bus Data Bus Clock ABL...

Page 6: ...it Amp 54 10p SIF In Sound BPF VCO Coil VCO COIL1 VCO COIL2 48 49 VIF VCO Chroma Counter B N INV IF Ident OSC C D Amp SIF Sys 2bit pre scaller SIF VCO 500K BPF SIF APC Filter 1K 0 01u 1000p 53 LIM AMP...

Page 7: ...4 LSOUT L 3 LSOUT R VOL R VOLUME RIGHT CHANNEL INPUT 43 44 TREBLE OUT R 41 47 TREBLE FILTER L 45 2 BASS FILTER L 40 SURRTC 38 TVOUT R 39 TVOUT L 36 37 AUX2 L Left channel external input FEXT2 INPUT P...

Page 8: ...before attempting the service adjustments See pages 9 10 for detailed information Initial Bus Data Setup Note When IC802 EEPROM is replaced following Service Menu should be set up for proper TV opera...

Page 9: ...evel 26 B YND 0 16 15 Difference value of NTSC B Y DC Level 27 R YND 0 16 15 Difference value of NTSC R Y DC Level 28 G YA 00 00 01 G Y Angle 29 RBGB 08 00 15 R Y B Y Gain Balance 30 RBAG 08 00 15 R Y...

Page 10: ...0 01 H lock V Det RF 72 HLK V 00 00 01 H lock V Det AV 73 VCO SW 00 00 01 C VCO Adjustment SW 74 VCOADJ 03 00 03 C VCO Adjustment 75 GRAY 00 00 01 Gray Mode 76 CROSS 00 00 03 Cross Black White 77 HL S...

Page 11: ...trast to maximum 3 Select Item No 04 V SIZ in the service mode 4 Change value to be optimum vertical size 5 Exit from the service mode 1 Receive a monochrome circular pattern 2 Set the brightness and...

Page 12: ...MAIN BOARD SCREEN VR Under side F B T 1 Receive a monochrome circular pattern 2 Set the brightness and colour to normal contrast to maximum 3 Enter to the service mode 4 Set each value of Item 16 RBI...

Page 13: ...stment Mode INPUT LEVEL 08 HI SEPARATION 21 LOW SEPARATION 34 ADJUST CHOOSE EXIT MENU 2 Service Adjustments Press the CHANNEL UP or CHANNEL DOWN button on the remote control handset to select the desi...

Page 14: ...ton 1 Connect an oscilloscope Probe A to TP 317 pin 38 of IC3401 and the ground Probe B to TP 318 pin 39 of IC3401 and the ground 2 Turn on the TV set and receive the multi sound programme 3 Press and...

Page 15: ...a value will be automatically stored in memory Service Adjustment 3 This adjustment is used to do a fine tuning of the channels with poor reception after they have been stored by the automatic tuning...

Page 16: ...t s gap must be more than 5mm to prevent sparks HORIZ WIDTH AND HIGH VOLTAGE CHECK 1 Receive the monochrome circular pattern 2 Set the brightness to normal and contrast to maximum 3 Adjust the focus c...

Page 17: ...lours to check this use bias controls Readjust the yoke position if necessary until all screens are pure 7 Adjust each Bias control and screen control to obtain white raster Refer to Gray Scale Adjust...

Page 18: ...610 104 2505 LATCH PUSH 7 9X6 9BK or 655 000 6936 LATCH PUSH 7 9X6 9BK 6 610 288 9277 DEC CONTROL SHEET C4BA 7 610 320 3485 CABINET FRONT C4BA 8 610 273 5185 CABINET BACK F2GS 9 645 069 4608 ASSY REMO...

Page 19: ...ould be considered when a component replacement is made in any area of a receiver Components indicated by a mark in this parts list and the circuit diagram show components whose value have special sig...

Page 20: ...02 TR 2SC2812N L6 TB0 405 163 1701 TR 2SC2812N L7 TB0 405 173 9803 TR 2SC3928A1R 405 173 9902 TR 2SC3928A1S Q681 405 011 8401 TR 2SC1740S Q 405 011 8500 TR 2SC1740S R 405 011 8609 TR 2SC1740S S 405 01...

Page 21: ...50V C232 403 260 2904 MT COMPO 0 33U J 50V C233 403 045 1504 ELECT 1000U M 25V C240 403 215 2201 CERAMIC 0 01U K 50V C243 403 215 2201 CERAMIC 0 01U K 50V C244 403 051 3103 ELECT 47U M 50V C245 403 08...

Page 22: ...ISTOR R003 401 026 3905 CARBON 330 JA 1 6W R006 401 026 8108 CARBON 4 7 JA 1 6W R019 401 007 7601 CARBON 150 JA 1 2W R029 401 007 7601 CARBON 150 JA 1 2W R031 401 027 5205 CARBON 680 JA 1 6W R033 401...

Page 23: ...RBON 22 JA 1 4W R620 401 010 4802 CARBON 470K JA 1 2W R621 401 010 4802 CARBON 470K JA 1 2W R622 401 019 9600 CARBON 47 JA 1 4W R623 401 026 4902 CARBON 330K JA 1 6W R624 402 001 8502 FUSIBLE RES 10 J...

Page 24: ...55 TE 17 D1910 407 206 5608 ZENER DIODE UDZS TE 1710B D249 407 099 6003 ZENER DIODE MTZJ9 1B D352 407 063 8705 ZENER DIODE MTZJ5 1C 407 056 9801 ZENER DIODE RD5 6EB1 D421 407 099 7208 ZENER DIODE MTZJ...

Page 25: ...1 E RA 405 066 9903 TR 2SC2688 1 K 405 067 0008 TR 2SC2688 1 L 405 067 0107 TR 2SC2688 1 M Q711 406 000 3605 TR 2SC3620 LB SAN 1 405 041 6507 TR 2SC2621 D RA 405 041 6705 TR 2SC2621 E RA 405 066 9903...

Page 26: ...406 DIODE 1SS133 D752 407 012 4406 DIODE 1SS133 D753 407 012 4406 DIODE 1SS133 D754 407 012 4406 DIODE 1SS133 MISCELLANEOUS K701 645 026 2005 SOCKET CRT 8P 652 001 0321 SOCKET CRT 8P 652 001 1465 SOCK...

Page 27: ...Nov 04 Panoramic...

Page 28: ...GQBZ 1 16GJ 100KAZ KK 5600 GQBZ 1 16 GJ1MAZ PM4 7LBZA 1 16GJ220AZ 1 16GJ220AZ KK 0 022 GQBZ KK 4700 GQBZ EM0 1 LBWA KK4700 GQBZ EM0 1 LBWA 1 16GJ 62KAZ EM0 47 LBWA 16EM47 LBWA EM4 7 LBWA 16EM 100 EM4...

Page 29: ...8 D653 R1907 J075 JW1 JW3 JW4 D1901 R423 C652 J051 D512 R831 J090 D861 D646 R830 VR462 J140 R602A C033 JP030 JP441 JP3402 L441A C465A PS601 R602 H3 IC002 IC001 J013 C355 J152 JP003 J008 J155 J151 JP00...

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