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SERVICE MANUAL

Design and specifications are subject to change without notice.

COLOR TELEVISION RECEIVER

ORIGINAL

MFR’S VERSION B

DBTV2500

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Summary of Contents for DBTV2500

Page 1: ...SERVICE MANUAL Design and specifications are subject to change without notice COLOR TELEVISION RECEIVER ORIGINAL MFR S VERSION B DBTV2500 ...

Page 2: ...SERVICE MANUAL COLOR TELEVISION RECEIVER DBTV2500 D B MFR S VERSION REVISION 1 MFR S VERSION D Please file this revision with the original version OEC7045A OEC7044A IC101 ...

Page 3: ...G 1 Initial setting content of MEMORY IC POWER ON total hours 16 x 16 x 16 x thousands digit value 16 x 16 x hundreds digit value 16 x tens digit value ones digit value NOTE FOR THE REPLACING OF MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC the following steps should be taken to ensure correct data settings while making reference to TABLE 1 Table 1 ...

Page 4: ...OR TINT SHARPNESS FM LEVEL LEVEL SEPARATION 1 SEPARATION 2 TEST MONO TEST STEREO X RAY TEST NO 13 14 15 16 17 18 19 20 21 22 23 24 TV 00 OSD 15 Adjust the unit to the following settings R DRIVE 10 B DRIVE 10 R BIAS 64 G BIAS 64 B BIAS 64 BRIGHTNESS 126 CONTRAST 100 Place the set with Aging Test for more than 15 minutes Activate the adjustment mode display of Fig 1 1 and press the channel button 01...

Page 5: ...ton 07 on the remote control to select V SHIFT Press the VOL UP DOWN button on the remote control until the horizontal line becomes fit to the notch of the shadow mask NOTE Adjust after performing adjustments in section 2 7 NOTE Adjust after performing adjustments in section 2 6 2 9 OSD HORIZONTAL 1 2 Activate the adjustment mode display of Fig 1 1 Press the VOL UP DOWN button on the remote contro...

Page 6: ...FIER 2 5 1 3 L501 DEGAUSS COIL L502 POWER Q501 POWER 36 AUDIO MUTE 5 19 10 32 X602 3 579545MHz Q606 REG 6 2 E 1 E 2 Q608 CUT OFF SOUND IC 5 POWER VOL UP KEY1 27 CH UP VOL DOWN CH DOWN OS101 1 REMOCON 10 3 4 1 2 AC IN RY101 4 D404 D127 9 SDA 5 SCL 4 34 SCL1 32 SDA1 6 5 MEMORY IC IC199 S 24C02BDP 1A 2 5 10 17 4 P CON 15V 7 3 AUDIO OUT REG OUT R OUT G OUT B OUT START UP VCC H OUT X TAL RF AGC OUT VIF...

Page 7: ...01 SKHVBED010 CH UP ATC001 NXC0032 010010 THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL NOTE TUNER VIDEO SIGNAL R SIGNAL G SIGNAL B SIGNAL DEFLECTION SIGNAL L101 3 3uH IC101 OEC7044A MICON IC 1 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 25 26 27 28 29 3 30 31 32 33 34 35 36 37 38 39 4 40 41 42 5 6 ...

Page 8: ...6 0 01 Y C642 0 001 Y C623 0 0033 M C630 0 01 Y C614 0 01 Y C651 470P B C654 0 022 F C622 0 015 M C661 0 01 Y C613_1 1 TF C607 0 01 Y C618_1 22P CH C699 0 01 Y C637 0 01 Y C634_1 0 01 B THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL NOTE TUNER VIDEO SIGNAL R SIGNAL G SIGNAL B SIGNAL DEFLECTION SIGNAL L6...

Page 9: ... NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME R419 1 5K R416 1 1 2W R814 330 R809 330 R806 2 7K 1 4W R804 2 7K 1 4W R802 2 7K 1 4W R412 470 1 2W R420 6 8K R410 470 1 2W R811 330 R427 100 1 4W R421_1 100K 1 4W R445_1 100K 1 4W R446 4 7K 1 2W R406 3 3K R404 2 7K 1 4W R422 6 8K 1 2W R813 4 7K R816 4 7K R815 4 7K C418 2200 25V MHE C448 22 100V YK C446 1 160V MHE C414 100 35V MHE C434 2...

Page 10: ...OWER D504 RM11C EIC D501 RM11C EIC D502 RM11C EIC D503 RM11C EIC D126 EM1C EIC D127 11E1 EIC D617 11E1 EIC D609 EM1C EIC W801 W815 W818 DESCRIBED IN PARTS LIST ONLY CRITICAL FOR SAFETY USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION DANS LA NOMENCLATURE DES PIECES N UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANT LES PIECES REPAREES PAR UN ATTENTION OF PRINTING AND SUBJECT ...

Page 11: ...AREES PAR UN ATTENTION OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME R356 120K R354 47K R355 3 9K R358 5 6K C353_1 2 2 50V KA C359_1 0 0033 M C357_1 10 50V KA C351 3300 10V YK C352 1 50V MHE THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL NOTE S809...

Page 12: ... 200mV 20µs div 7 9 200mV 20µs div CHROMA 0 5V 5ms div 10 11 1V 20µs div 12 1V 20µs div 1V 20µs div 13 8 20V 20µs div 3 200mV 20µs div DEFLECTION CRT 14 0 5V 5ms div 15 20V 20µs div H 1 NOTE The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram ...

Page 13: ...0µs div 17 22 50V 20µs div SOUND 10V 5ms div 18 10V 5ms div 19 50V 20µs div 20 NOTE The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram H 2 WAVEFORMS 0 5V 1ms div 23 1V 1ms div 24 ...

Page 14: ...04 204 204 204 204 110 111 204 203 203 FB401 TU001 MS501 102 ATC001 202 114 103 202 104 PCB010 MAIN PCB 101 203 115 205 116 L502 205 205 119 205 119 J801 115 PCB110 CRT PCB V801 113 105 204 106 109 201 107 201 118 108 117 201 SP351 120 ...

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