Panoramic TVP-2905AS Service Manual Download Page 14

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Service Adjustments

-14-

MTS

C3439

C3436

C3404

C3412

C3408

C3413

C3416

C3417

C3418

C3424

C3427

C3401

C3432

J030

J031

1001

J092

D1021

JP3401

J101

J117

R65

R1912

J118

C042

005

J125

J126

J127

J128

J129

R019

J028

J143

J141

JP029

J075

JW1

JW4

JP0

JP3402

R042

R041

C3414

J161

C34

R3411

R3422

R3407

C3407

R3421

C3421

C3422

C3433

C3434

C3431

IC3401

C3423

C3426

PB1

R3433

R3432

R3426

J137

R3412

JP031

R033

R034

R037

R035

C3420

JP3404

JP3403

JP3405

JP1001

C3405

C3403

INPUT LEVEL 08
HI SEPARATION

LOW SEPARATION

ADJUST: - /+
CHOOSE:

▲▼

EXIT : MENU

1. Connect a signal to the antenna terminal with audio signal

of 1KHz at 100% modulated.

2. Connect a DC Volt-Meter to TP-317 ( pin-38 of IC3401)

and the ground.

3. Switch the TV set on, and set the Surround OFF.

Press and hold the MENU button on the TV set, and
press “3” button on the remote control transmitter to enter
to the service mode.

SOUND LEVEL ADJUSTMENT

5. Adjust voltage to become DC 400mVrms±20mVrms at

TP317 by pressing the VOLUME(+/-) button on the remote
control or TV set.

6. To exit from the service mode, press the MENU button.

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 hold the MENU button on the TV set, and press

“3” button on the remote control transmitter to enter the
service mode.

4. Select “LOW SEPARATION” by pressing the CHANNEL

UP/DOWN button on the remote control or TV set.

STEREO SEPARATION ADJUSTMENT

TP-317(pin-38 of IC3401)

MAIN BOARD

(Solder side)

TP-318 (pin-39 of IC3401)

INPUT LEVEL 08
HI SEPARATION

LOW SEPARATION

ADJUST: - /+
CHOOSE:

▲▼

EXIT : MENU

5. Adjust the level of 300Hz at TP-317 (pin-38 of IC3401)

to become minimum level by pressing the VOLUME(+/ -)
button on the remote control or TV set.

Minimum leakage

TP-317(R)

300Hz

IC3401

MTS

C3439

C3436

C3404

C3412

C3408

C3413

C3416

C3417

C3418

C3424

C3427

C3401

C3432

J030

J031

1001

J092

D1021

JP3401

J101

J117

R658

R1912

J118

C042

005

J125

J126

J127

J128

J129

R019

J028

J143

J141

JP029

J075

JW1

JW4

JP0

JP3402

R042

R041

C3414

J161

C34

R3411

R3422

R3407

C3407

R3421

C3421

C3422

C3433

C3434

C3431

IC3401

C3423

C3426

PB1

R3433

R3432

R3426

J137

R3412

JP031

R033

R034

R037

R035

C3420

JP3404

JP3403

JP3405

JP1001

C3405

C3403

TP-317(pin-38 of IC3401)

MAIN BOARD

(Solder side)

IC3401

Summary of Contents for TVP-2905AS

Page 1: ... 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 CH14 CH22 Super band CH23 CH36 Hyper band CH37 CH64 Ultra band CH65 CH94 and CH100 CH125 Low mid band CH95 CH99 Video IF 45 75MHz Aerial Input Impedance 75Ω Ext Terminals Video inputs Phono jack 2 1Vp p 75Ω Audio i...

Page 2: ...ceiver 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 including suffix letter Excessive high voltage may produce potentially hazardous X RADIATION To avoid such hazards the high voltage must be maintained within specified limit Refer to this ser vice manual...

Page 3: ...T 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 REG IC IC681 5VRC 27 23 HORIZ OUT FBT VERT OUT HORIZ OUT AUDIO RIGHT AUDIO LEFT HEADPHONE JACK Q901 CRT MEMORY 5 6 MTS DECODER AUDIO CONTROL SW IIC BUS CONTROL WITH PLL FILTER IF VIDEO CHROMA DEFLECT...

Page 4: ...ESET 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 A101 TUNER IC201 IF VIDEO CHROMA DEFLECTION CIRCUIT POWER CIRCUIT etc AFT S CURVE IN C CAPTION IN OSD BLK OUT OSD RED OUT OSD GREEN OUT OSD BLUE OUT HORIZ SYNC IN VERT SYNC IN POWER PROTECT IN POWER ER...

Page 5: ...LMP 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 Red Input Green Input Blue Input Fast Blanking Input RGB Vcc Red Output Green Output Blue Output fsc output or C Sync output Vertical Output Ramp ALC Filter Horizontal BUS Vcc Horizontal Output Horiz...

Page 6: ... 3bit 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 FM Det FM Level 5bit Chroma C D APC Det 500K Det To BUS Chroma VCO VIF Counter Reset Pulse VCO Ident VIF Sys 2bit Phase Detector A MUTE 1bit VOLUME D A VOLUME Filter A SW 1bit Input Select VOLUME ...

Page 7: ...put MAIN OUT L R signal output 8 MATRIX VE VCA RMSDET RMSDET 29 30 32 31 1 VETC VEOUT VCAIN VCAWGT VCATC TREBLE OUT L SPECTRAL 34 33 FEXT1 TVSW EXT1 EXT2 M1 M2 SURR SURROUND BASS BASS TREB BASS TREBLE TREB VOL L VOL L VOL R 48 VOLIN L 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 ch...

Page 8: ... up 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 operation before attempting the service adjustments NO 01 RFAGC Adjust the data 06 to10 NO 82 CHMT Adjust the data 12 to 05 NO 308 R08 Adjust the data FF to 21 NO 05 V SCO Adjust the data 17 to 11 NO 84...

Page 9: ...Level 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 B Y Angle 31 G YAN 00 00 01 Difference value of NTSC G Y Angle 32 RBGBN 0 8 7 Difference value of NTSC R Y B Y Gain Balance 33 RBABN 0 8 7 Difference value of NTSC R Y B Y Angle 34 COGV 01 00 03 Cor...

Page 10: ...00 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 SW 01 00 01 Half Tone ON OFF 78 HL TON 00 00 03 Half Tone Level 79 AVNCON 64 00 127 Contrast No Signal in AV 80 AVNBRI 64 00 127 Brightness No Signal in AV 81 POMT 12 08 00 127 Power Mute Time 82 CHMT...

Page 11: ...ntrast 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 contrast to normal 3 Select Item No 12 OSDHP in the service mode 4 Change value to be proper OSD position 5 Exit from the service mode 1 Tune receiver to a caption channel 2 Check that CAPTION positi...

Page 12: ...T 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 RBIAS 17 GBIAS 18 BBIAS mode to 00 Set each value of Item 19 RDRIV 21 BDRIV mode to 63 20 GDRIV to 08 5 Select Item 22 mode to be one horizontal scanning line and turn the screen volume on the FBT to ob...

Page 13: ...de 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 desired service menu item you want to adjust Use the VOLUME or to adjust the data The or button will increase or decrease the data sequentially 3 Exit from the Service Menu Press the MENU button to turn off the Se...

Page 14: ...tton 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 hold the MENU button on the TV set and press 3 button on the remote control transmitter to enter the service mode 4 Select LOW SEPARATION by pressing the CHANNEL UP DOWN button on the remote control...

Page 15: ... 4 or MENU button on the remote control unit The Service Menu now appear 2 Service Adjustments Press and hold the VOLUME or VOLUME button on the remote control handset or TV set to make fine tuning adjustment Press and hold the VOLUME button for higher frequency tuning and press and hold the VOLUME for lower frequency tuning Entering the Service Menu Exit from the Service Menu MENU MENU VOLUME VOL...

Page 16: ...fore attempting High Voltage Check 1 Connect high voltage voltmeter negative lead to ground and connect lead to anode of picture tube 2 Tune receiver to an active channel and confirm TV is operating properly 3 The high voltage must be 28 5KV 1KV and less than 32KV at 0 beam current Brightness and contrast minimum setting Note If the picture tube is replaced check the high voltage HIGH VOLTAGE CHEC...

Page 17: ...olours 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 Adjustment If part of the picture screen is coloured adjust the Deflection Yoke position forward or backward slightly 8 Tighten the mounting screw of the Deflection Yoke Adjust Convergence next CENTRE CONV...

Page 18: ... SPRING HKG S6KL 2 610 266 7998 DEC INLAY F5AD 3 610 266 7981 BUTTON UNITED F5AD 4 610 270 3146 CABINET FRONT F5AA 5 610 270 3153 CABINET BACK F5AA 6 645 069 4608 ASSY REMOCON JXMRR 7 610 297 3723 RC BATTERY LID JXMRA 8 645 004 3925 ANTENNA MATCHING BOX 645 005 0251 ANTENNA MATCHING BOX 610 320 1344 INSTRUCTIONS MANUAL C4BR Key No Part No Description Key No Part No Description ANT 75Ω 6 7 1 2 3 4 ...

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 significance to product safety It is particularly recommended that only parts specified on the following parts list be used for components replacement pointed out by the mark Note Parts order must contai...

Page 20: ...812N 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 405 012 2002 TR 2SC1815 GR 405 012 2101 TR 2SC1815 O 405 012 2309 TR 2SC1815 Y 405 157 0505 TR 2SC536NF NPA 405 151 8705 TR 2SC536NG NPA 405 020 7501 TR 2SC945A PA 405 020 7709 TR 2SC945A QA 405 020 7907 TR 2SC945A R...

Page 21: ...3 342 3300 CERAMIC 0 1U K 25V C223 403 342 3300 CERAMIC 0 1U K 25V C224 403 342 3300 CERAMIC 0 1U K 25V C225 403 049 0008 ELECT 1U M 50V C226 403 086 2300 NP ELECT 1U M 50V C227 403 049 4204 ELECT 10U M 50V C230 403 215 2201 CERAMIC 0 01U K 50V C231 403 260 2904 MT COMPO 0 33U J 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 C24...

Page 22: ...ERAMIC 56P J 50V C852 403 157 3106 CERAMIC 56P J 50V C853 403 157 3106 CERAMIC 56P J 50V C861 403 049 0008 ELECT 1U M 50V C862 403 342 3300 CERAMIC 0 1U K 25V C880 403 155 2200 CERAMIC 3300P K 50V C891 403 049 0008 ELECT 1U M 50V C893 403 049 9803 ELECT 2 2U M 50V C894 403 281 5007 CERAMIC 0 033U K 25V C896 403 113 3805 CERAMIC 1000P K 50V RESISTOR R003 401 026 3905 CARBON 330 JA 1 6W R006 401 026...

Page 23: ...602 402 071 1205 WIRE WOUND 3 9 KA 7W 402 072 4304 WIRE WOUND 3 9 KA 7W 402 098 0601 WIRE WOUND 3 9 KA 7W R611 401 020 0801 CARBON 470 JA 1 4W R613 402 001 8106 FUSIBLE RES 680 J 1 4W R614 401 025 8208 CARBON 22K JA 1 6W R615 401 025 7409 CARBON 220 JA 1 6W R616 401 025 4606 CARBON 18K JA 1 6W R619 401 016 1508 CARBON 22 JA 1 4W R620 401 010 4802 CARBON 470K JA 1 2W R621 401 010 4802 CARBON 470K J...

Page 24: ... 5600 ZENER DIODE MTZJ6 8A 407 057 4003 ZENER DIODE RD6 8EB1 408 047 8605 ZENER DIODE MTZJ6 8A D103 407 100 0204 ZENER DIODE MTZJ36A 407 056 2307 ZENER DIODE RD36EB1 D106 407 206 5608 ZENER DIODE UDZS TE 1710B D107 407 206 5608 ZENER DIODE UDZS TE 1710B D1201 407 149 0807 DIODE 1SS355 TE 17 D1202 407 149 0807 DIODE 1SS355 TE 17 D1901 407 158 9204 LED SPR 39MVWF D1908 407 149 0807 DIODE 1SS355 TE 1...

Page 25: ...ITCH PUSH 1P 1TX1 645 027 7382 SWITCH PUSH 1P 1TX1 SW1905 645 003 4701 SWITCH PUSH 1P 1TX1 645 019 4887 SWITCH PUSH 1P 1TX1 645 027 7382 SWITCH PUSH 1P 1TX1 SW601 645 050 4129 SWITCH PUSH POWER 2P 2T 652 001 4565 SWITCH PUSH POWER 2P 2T X161 421 009 9403 SAW F TSF5246P X211 652 001 0154 OSC CRYSTAL 4 433619MHZ X801 645 004 1938 OSC CRYSTAL 32 768KHZ 645 004 1945 OSC CRYSTAL 32 768KHZ 610 313 5168 ...

Page 26: ...JA 1 16W R751 401 105 7909 MT GLAZE 0 000 ZA 1 16W R752 401 105 0603 MT GLAZE 10K JA 1 16W R753 401 105 0603 MT GLAZE 10K JA 1 16W COIL L700Z 401 057 6807 OXIDE MT 0 68 JA 1W L701 645 001 4826 INDUCTOR 180U K DIODE D741 407 012 4406 DIODE 1SS133 D742 407 012 4406 DIODE 1SS133 D751 407 012 4406 DIODE 1SS133 D752 407 012 4406 DIODE 1SS133 D753 407 012 4406 DIODE 1SS133 D754 407 012 4406 DIODE 1SS133...

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

Page 28: ... 25KK 0 033GQ CJ27CGQZ CJ15CGQZ V10B0 560N 570N AJ 1 5K 1 16GJ 1 5KAZ EM1 RD3 6EL DZXLBB017 1 16GJ 4 7KAZ 1 16GJ 8 2KAZ H OUT PM1 X 1K 1 16GJ33AZ 1 16GJ0AZ X 2SJ4 7 25KK 0 1GQ 25KK 0 1GQ 25KK 0 1GQ X X EM1 X 1 16GJ 33KAZ 470 X X 25KK 0 1GQ 25KK 0 1GQ X J30B0250N J30B1380N 2SC2814 F4P EM1 KK1000 GQBZ 1 16GJ 820AZ 1 16GJ 470AZ X X X X X J 1 16GJ1 8KAZ 1 16GJ5 6KAZ KK3300GQBZ AH 1 16GJ 10KAZ AH 1 16G...

Page 29: ... 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 JP004 JP001 R042 L838 L837 L842 L841 JP501 R602 H5 R602 H6 R602 H7 R602 H8 JP488 JP487 JP486 C486A JW6 JW7 R650 JP476 R449A T471 H11 T471 H3 D650 K1002A C352 D639 R639 R487 R670 JP006 JP005 R041 KX J154 C3414 J...

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