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Durabrand DBTV2702 Service Manual
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Durabrand DBTV2702 Service Manual

Durabrand DBTV2702 Service Manual

Color television receiver
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DBTV2702
SERVICE MANUAL
This SUPPLEMENT must be used together SERVICE MANUAL for MT2271S.
All other test and repair procedures are as shown in the ORIGINAL MANUAL.
Please file this SUPPLEMENT with the ORIGINAL VERSIONS.
COLOR TELEVISION RECEIVER
SUPPLEMENT
MFR'S VERSION A
Design and specifications are subject to change without notice.

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Summary of Contents for Durabrand DBTV2702

  • Page 1 DBTV2702 SERVICE MANUAL COLOR TELEVISION RECEIVER SUPPLEMENT MFR'S VERSION A This SUPPLEMENT must be used together SERVICE MANUAL for MT2271S. All other test and repair procedures are as shown in the ORIGINAL MANUAL. Please file this SUPPLEMENT with the ORIGINAL VERSIONS.

  • Page 2: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST MT2271S DBTV2702 REF. NO. PART NO. DESCRIPTION PART NO. DESCRIPTION R001 R002T4272J RC 2.7K OHM 1/4W R002 R903N8101J RC 100 OHM 1/8W R004 R903N8104J RC 100K OHM 1/8W R105 R903N8472J RC 4.7K OHM 1/8W R002T4332J RC 3.3K OHM 1/4W...
  • Page 3 ELECTRICAL REPLACEMENT PARTS LIST MT2271S DBTV2702 REF. NO. PART NO. DESCRIPTION PART NO. DESCRIPTION R512 R002T4271J RC 270 OHM 1/4W R513 R002T2102J RC OHM 1/2W ! R514 R002T4562J RC 5.6K OHM 1/4W R002T4682J RC 6.8K OHM 1/4W R516 R002T4101J RC...
  • Page 4 ELECTRICAL REPLACEMENT PARTS LIST MT2271S DBTV2702 REF. NO. PART NO. DESCRIPTION PART NO. DESCRIPTION R1011 R903N8182J RC 1.8K OHM 1/8W R1014 R903N8153J RC 15K OHM 1/8W R903N8332J RC 3.3K OHM 1/8W R1015 R903N8153J RC 15K OHM 1/8W R903N8332J RC 3.3K OHM 1/8W...
  • Page 5 ELECTRICAL REPLACEMENT PARTS LIST MT2271S DBTV2702 REF. NO. PART NO. DESCRIPTION PART NO. DESCRIPTION C517 C0PLRR713K CC 0.001 UF 2KV RR C03L0R7U2K CC 680 PF 2KV R C518 CB3730M13M CC 0.001 UF 250V C0JTB05Q2K CC 470 PF 500V B C519 C0PLRR713K CC 0.001 UF 2KV RR...
  • Page 6 ELECTRICAL REPLACEMENT PARTS LIST MT2271S DBTV2702 REF. NO. PART NO. DESCRIPTION PART NO. DESCRIPTION D413 D2WT011E10 DIODE SILICON 11E1-EIC D414 D97U01201B DIODE,ZENER MTZJ12B T-77 D2LTP10JE0 DIODE,RECTIFIER RGP10JE-G3 D415 D2LTP10JE0 DIODE,RECTIFIER RGP10JE-G3 D417 D1VT001330 DIODE,SILICON 1SS133T-77 D418 D97U03001B DIODE,ZENER MTZJ30B T-77...
  • Page 7 ELECTRICAL REPLACEMENT PARTS LIST MT2271S DBTV2702 REF. NO. PART NO. DESCRIPTION PART NO. DESCRIPTION L701 021LA6270K COIL L901 02167D101K COIL 100 UH T401 045013002J TRANS,HORIZONTAL DRIVE ETH14Y46AY 450190161 TRANS,HORIZONTAL DRIVE ETH19Y203AY ! T501 048135075S TRANSFORMER,SWITCHING 8135075S 048140066S TRANSFORMER,SWITCHING 8140066S J702...

  • Page 8: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST MT2271S DBTV2702 REF. NO. PART NO. DESCRIPTION PART NO. DESCRIPTION 701APJA106 CABINET,FRONT 701WPJB933 CABINET,FRONT 702APAA005 CABINET,BACK 702WPA0937 CABINET,BACK(1/6) 711WPCA043 BADGE,BRAND 723552A002 BADGE,BRAND 722A08A114 SHEET,RATING 722552A026 SHEET,RATING 723000B550 FILM,DECORATION 723000C068 FILM,DECORATION 713WPA0098 GUIDE,REMOCON 713WPA0230 GUIDE,REMOCON 7260000306 SHEET,CAUTION...
  • Page 9 PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE Q103 D104 J710 J711 J712 SW105 R113 W016 W055 SW104 SW102 SW101 SW103 6.3A125VOR250V W845 W864 R803 W053 L101 C505 R515 W011 W052 CP806_1 FH502 FH501 F501 TP022 W010 R802 R804 W051 W117 W009 C918...
  • Page 10 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE R722 R703 R719 R707 R729 R710 R532 R533 R534 C1004 C1002 R1015 R1014 C708 R611 C602 R622 R650 R1512 C618 R639 R609 C623 C606 IC1502 R1519 R635 R620 R143 R819 C809 C801 R816 R815...
  • Page 11 MICON/TUNER SCHEMATIC DIAGRAM (MAIN PCB) (DBTV2702) ACCESSORY TU001 ENV56DB6G3 R101 R126 TM101 2.7K C003 R128 RC-DW040 TP001 OS101 S102X S102Y RPM7138-H5 FROM/TO POWER +30V PROTECT_A R110 PROTECT SW Q101 BUFFER KRC101MAT R140 R107 Q102 KTA1266 47 1/4W 47K 1/4W DEGAUSS_H...
  • Page 12 CHROMA SCHEMATIC DIAGRAM (MAIN PCB) (DBTV2702) W806 FROM POWER W851 W847 UNREG+12V R629_1 Q603 KTC3203_Y C652 TO AV Q606 KTC3209_Y TU_VIDEO 11.3 W829 Q608 Q604 Q605 KTC3209_Y KTC3209_Y KTC3209_Y FROM/TO COMB FILTER C647 C614 R643 STEREO+5V 220P B Y_IN C_IN...
  • Page 13 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) (DBTV2702) L402 S103Y S103X CP802B CP802A HF57T18.5*10*10 B2013H02-5P B2013H02-5P FROM/TO CHROMA CLAMP CLAMP CLAMP CLAMP CLAMP G.OUT G.OUT G.OUT G.OUT G.OUT B.OUT B.OUT B.OUT B.OUT B.OUT V-OUT IC IC401 LA78041 R.OUT R.OUT R.OUT R.OUT R.OUT...
  • Page 14 POWER SCHEMATIC DIAGRAM (DBTV2702) (MAIN PCB) FROM CHROMA RELAY DRIVE Q504 D516 KTC3198 UNREG+12V 1SS133 TO DEFLECTION/CRT R521 RY501 UNREG+18V ALKS321 150 2W T501 8140066S R517_1 15.66 C516 140.5 W848 TO SOUND 500V 0.0022 0.39 140.5 SOUND+B DEGAUSS COIL L503 D505 144.0...
  • Page 15 SOUND SCHEMATIC DIAGRAM (MAIN PCB) (DBTV2702) FROM/TO MICON/TUNER AUDIO_MUTE C303 R309 0.033 B 1.8K C315 C316 R307 C901 0.022 0.47 BUFFER 4.7K Q901 KTA1266 1.8K TONE 136K AMP1 I2C BUS C902 INTERFACE SIMAMP1 BUFFER VOLAMP1 6.5K 6.5K 6.5K Q902 VOLAMP2...
  • Page 16 AV SCHEMATIC DIAGRAM (MAIN PCB) (DBTV2702) VIDEO_3_IN AV (FRONT) J710 C702 R733 HTJ-032-03AY C701 R734 L3_IN AV (FRONT) J711 HTJ-032-03AW R740 R3_IN AV (FRONT) J712 FROM/TO SOUND HTJ-032-03AR FRONT_AUDIO_L FRONT_AUDIO_R REAR_AUDIO_R REAR_AUDIO_L C729 R724 C720 R725 P.CON+9V_1 BUFFER S_VIDEO 2.2K...
  • Page 17 COMB/FILTER SCHEMATIC DIAGRAM (MAIN PCB) (DBTV2702) FROM/TO CHROMA STEREO+5V C_IN Y_IN FROM/TO AV VIDEO_IN V1_SW VI_C_IN VIDEO_OUT VI_Y_IN S_VIDEO AV/S SW IC ON_TIMER IC1502 NJM2283M C1505 R1512 C1521 C1527 R1520 10P CH 1K 1/4W FROM MICON/TUNER R1523 R1521 C1520 W807...

  • Page 18: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB ASS'Y) FB401 V801 TU001 PCB010 (MAIN PCB ASS'Y) CHANGE 112, 113...
  • Page 19 M3L5-38M SPEC.NO. W283044 O/R NO.