TCL AT2127 Service Manual
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TCL AT2127 Service Manual

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SERVICE MANUAL

1. Caution.....................................................................2
2. Specification...............................................................6
3. BOM List....................................................................9
4. Alignment Procedure....................................................30
5. Block Diagram............................................................39
6. Schematic Diagram......................................................40
7. PCB Layout................................................................41
8. Exploded View Diagram.........................................................43
This manual is the latest at the time of printing, and does not
include the modification which may be made after the printing, by
the constant improvement of product.
TCL
AT2127

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  • Page 1: Service Manual

    SERVICE MANUAL AT2127 1. Caution……………………………………………………………2 2. Specification………………………………………………………6 3. BOM List…………………………………………………………..9 4. Alignment Procedure………………………………………….…30 5. Block Diagram……………………………………………………39 6. Schematic Diagram………………………………………………40 7. PCB Layout………….……………………………………………41 8. Exploded View Diagram………………………......43 This manual is the latest at the time of printing, and does not include the modification which may be made after the printing, by...
  • Page 2 CAUTION: Use of controls, adjustments or procedures other than those specified herein may result in hazardous radiation exposure. CA UTION: TO REDUCE THE RISK OF CAUTION ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE RISK RISK OF OF ELECTRI ELECTRIC C PARTS INSIDE.

  • Page 3: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS CAUTION: Read all of these instructions. Save these instructions for later use. Follow all Warnings and Instructions marked on the audio equipment. 1. Read Instructions- All the safety and operating instructions should be read before the product is operated. 2.
  • Page 4 PROTECTION AND LOCATION OF YOUR SET Do not use this television set near water ... for example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, etc. Never expose the set to rain or water. If the set has been exposed to rain or water, unplug the set from the wall outlet and refer servicing to qualified service personnel.

  • Page 5: If The Set Does Not Operate Properly

    OPERATION OF YOUR SET 18. This television set should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply at your home, consult your television dealer or local power company. For television sets designed to operate from battery power, refer to the operating instructions.
  • Page 6 PFS2 FORMAT-1 Report Date:2004-11-16 15:19 ProductView..: Report by....: Specs / Products MasterData Customer Id RADIO VICDTORIA Version Status Locked 12NC Brand Reception +Tuning - presets/channels 181, Full-Cable +Tuning - technology +Tuning - Indication Full-Cable +Freq Bands Freq +Channels +IF Freq 45.75M +TV Systems Off Air/Cable NTSC-M, PAL MN...
  • Page 7 Date:2004-11-16 15:19 ProductView..: Report by....: Specs / Products Auto Cable/ Auto select. Auto channel Prog, +Tuning/Install Features Cable/Antenna select, Channnel Edit, Factory Mode, Language Selection, Service Mode sleep timer +Clock/Timer Functions +Local Controls Front Channel +/-, Volume+/-, Mains(Tact Switch), Menu, TV/Video +Local Controls Top +Indicators - screen +Indicators - front...
  • Page 8 Date:2004-11-16 15:19 ProductView..: Report by....: Specs / Products Power Consumption (P)TV in On less than 3W Power Consumption SB in Watts Power Consumption Semi SB in W +Power in "ON" for +Power in Standby for +Power in "OFF" for Weight (P)TV (incl. Packaging) Weight (P)TV (excl.
  • Page 9 Item No. Description Quantity Req. Designator Remarks 08-002175-FRY ASS'Y - PACKING FOR F/R CAB. 74-100100-8CD POLYBAG (100CMX100CM) 74-344780-50C EPE BOARD (900mmx400mmx5mm) 0.75 FOR REAR CABINET 76-001497-0AF CARTON BOX LWH 640X460X360MM 0.0156 FOR OTHER PARTS 76-002111-0AR CARTON BOX LWH 765X605X480MM 0.25 FOR R.CAB.PACKING 76-002180-1AP CARTON BOX LWH 642X470X510MM...
  • Page 10 Item No. Description Quantity Req. Designator Remarks 10-1N4148-ABX DIODE 1N4148 (SWITCHING) 1 D007 10-1N4148-ABX DIODE 1N4148 (SWITCHING) 1 D601 10-1N4148-ABX DIODE 1N4148 (SWITCHING) 1 D008 10-1N4148-ABX DIODE 1N4148 (SWITCHING) 1 D602 10-1N4148-ABX DIODE 1N4148 (SWITCHING) 1 D009 10-1N4148-ABX DIODE 1N4148 (SWITCHING) 1 D307 10-1N4148-ABX DIODE 1N4148 (SWITCHING)
  • Page 11 Item No. Description Quantity Req. Designator Remarks 18-CB0101-JNX RES. C.F. 100 OHM 1/6W +/-5% 1 R218 18-CB0101-JNX RES. C.F. 100 OHM 1/6W +/-5% 1 R009 18-CB0101-JNX RES. C.F. 100 OHM 1/6W +/-5% 1 R228 18-CB0102-JNX RES. C.F. 1K OHM 1/6W +/-5% 1 R415 18-CB0102-JNX RES.
  • Page 12 Item No. Description Quantity Req. Designator Remarks 18-CB0221-JNX RES. C.F. 220 OHM 1/6W +/-5% 1 R401 18-CB0222-JNX RES. C.F. 2.2k OHM 1/6W +/-5% 1 R055 18-CB0222-JNX RES. C.F. 2.2k OHM 1/6W +/-5% 1 R044 18-CB0223-JNX RES. C.F. 22k OHM 1/6W +/-5% 1 R215 18-CB0223-JNX RES.
  • Page 13 Item No. Description Quantity Req. Designator Remarks 18-CD0100-JNX RES. C.F. 10 OHM 1/4W +/-5% 1 R027 18-DB0103-FNX RES. M.F. 10K OHM 1/6W +/-1% 1 R302 18-DB0104-FNX RES. M.F. 100K OHM 1/6W +/-1% 1 R303 18-DB0153-FNX RES. M.F. 15K OHM 1/6W +/-1% 1 R244 18-DB0223-FNX RES.
  • Page 14 Item No. Description Quantity Req. Designator Remarks 25-BCB470-M1X CAP. ELEC 47 UF 16V +/-20% 1 C423 25-BCB470-M1X CAP. ELEC 47 UF 16V +/-20% 1 C202 25-BCB470-M1X CAP. ELEC 47 UF 16V +/-20% 1 C082 25-BDA471-M1X CAP. ELEC 470 UF 25V +/-20% 1 C217 25-BDA471-M1X CAP.
  • Page 15 Item No. Description Quantity Req. Designator Remarks 26-EBP103-ZFX CAP. CER 0.01UF 50V +80/-20% F 1 C114 26-EBP103-ZFX CAP. CER 0.01UF 50V +80/-20% F 1 C024 26-EBP103-ZFX CAP. CER 0.01UF 50V +80/-20% F 1 C201 26-EBP103-ZFX CAP. CER 0.01UF 50V +80/-20% F 1 C241 26-EBP103-ZFX CAP.
  • Page 16 Item No. Description Quantity Req. Designator Remarks 34-A109K0-1IX COIL CHOKE 1 UH +/-10% 1 L103 34-A109K0-1IX COIL CHOKE 1 UH +/-10% 1 L102 34-R100J2-0EX COIL PL - 10 UH +/-5% 1 L002 34-R220J2-0EX COIL PL - 22 UH +/-5% 1 L208 34-R220J2-0EX COIL PL - 22 UH +/-5% 1 L207...
  • Page 17 Item No. Description Quantity Req. Designator Remarks 41-WJ0075-B00 WIRE BARE JUMPER 7.5MM 1 J225 41-WJ0075-B00 WIRE BARE JUMPER 7.5MM 1 J914 41-WJ0075-B00 WIRE BARE JUMPER 7.5MM 1 J901 41-WJ0080-B00 WIRE BARE JUMPER 8 MM 1 J108 41-WJ0080-B00 WIRE BARE JUMPER 8 MM 1 J903 41-WJ0080-B00 WIRE BARE JUMPER 8 MM...
  • Page 18 Item No. Description Quantity Req. Designator Remarks 41-WJ0125-B00 WIRE BARE JUMPER 12.5MM 1 J216 41-WJ0130-B00 WIRE BARE JUMPER 13MM 1 J204 41-WJ0130-B00 WIRE BARE JUMPER 13MM 1 J006 41-WJ0135-B00 WIRE BARE JUMPER 13.5MM 1 J014 41-WJ0140-B00 WIRE BARE JUMPER 14MM 1 J005 41-WJ0160-B00 WIRE BARE JUMPER 16MM...
  • Page 19 Item No. Description Quantity Req. Designator Remarks 27-RCP333-J0X CAP. PP 0.033 UF 100V +/-5% 1 C405 13-L7805C-VAP IC L7805CV 1.5A (REGULATOR) 1 IC402 27-MBC103-J0X CAP. M.P.E 0.01UF 63V+/-5% 1 C215 27-PBC472-J0X CAP. P.E 0.0047UF 63V +/-5% 1 C607 27-PBC472-J0X CAP. P.E 0.0047UF 63V +/-5% 1 C608 18-CB0220-JNX RES.
  • Page 20 Item No. Description Quantity Req. Designator Remarks 10-0RL255-EBX DIODE RL255 (POWER RECTIFIER) 1 D815 10-0RL255-EBX DIODE RL255 (POWER RECTIFIER) 1 D816 10-0RL255-EBX DIODE RL255 (POWER RECTIFIER) 1 D817 10-0RL255-EBX DIODE RL255 (POWER RECTIFIER) 1 D818 10-0RU3YX-F0X DIODE RU3YX (FAST RECTIFIER) 1 D830 10-1N4148-ABX DIODE 1N4148 (SWITCHING)
  • Page 21 Item No. Description Quantity Req. Designator Remarks 18-KE0105-JN3 RES. H.VOLT. CC 1M OHM 1/2W +/-5% 1 R802 18-KF0825-JH3 RES. H.VOLT.CC 8.2M OHM 1W +/-5% 1 R812 18-RG0228-JHX RES. WIRE ROUND 0.22 OHM 2W +/-5% 1 R810 20-TR103H-5CX TRIMMER B10K HORIZ TYPE 1 VR830 22-NTC479-XX0 NTC 4.7 OHM +/-18% NTC4.7D2-14...
  • Page 22 Item No. Description Quantity Req. Designator Remarks 35-139730-00X FERR. BEAD BF60 FOR D830 35-139730-00X FERR. BEAD BF60 FOR D806 35-139730-00X FERR. BEAD BF60 FOR D831 35-139730-00X FERR. BEAD BF60 FOR D833 36-TRF110-XX0 TRANSFORMER 1 T803 41-WJ0075-B00 WIRE BARE JUMPER 7.5MM 1 J809 41-WJ0075-B00 WIRE BARE JUMPER 7.5MM...
  • Page 23 Item No. Description Quantity Req. Designator Remarks 71-DYP000-WX1 LABEL STICK ON HEAT SINK 10-00RU3C-F0X DIODE RU3C (FAST RECTIFIER) 1 D831 36-LIF022-AX0 LINE FILTER 1 T801 41-WJ0050-B00 WIRE BARE JUMPER 5MM 1 R820 41-WJ0050-B00 WIRE BARE JUMPER 5MM 1 R821 41-WJ0050-B00 WIRE BARE JUMPER 5MM 1 R822 25-BDA102-M1X...
  • Page 24 P501 P2 -P6 FOR M.BD P201 46-30615H-04X HS 4P24 460 F/W TJC3-4Y/SCN-4 P502 FOR M. BD P402 47-CRT004-XX0 CRT SOCKET GZS10-2-AC2 1 S501 08-2127SG-AG0 ASS'Y - AG PACKING PARTS 75-2165LL-EC1 POLYFOAM 75-2165LR-EC1 POLYFOAM 75-2165UL-EC1 POLYFOAM 75-2165UR-EC1 POLYFOAM 76-AT2127-0AT CARTON BOX 08-2127SG-FCN ASS'Y - FRONT CABINET...
  • Page 25 Item No. Description Quantity Req. Designator Remarks 02-GND021-XX0 ASS"Y - CRT GND WIRE&HOUSE 36-DEG210-BX3 DEGAUSSING COIL 2500mm 42-51216D-XX0 SPEAKER (50MMX120MM) 16 OHM 5W 1 W601 42-51216D-XX0 SPEAKER (50MMX120MM) 16 OHM 5W 1 W602 44-21OFLS-SG2A CRT A51JSY63X13(CR)ORG (AFSA) 1 CRT01 46-27250H-02X HS 2P24 450/5 F/W TJC3-02H P602H FOR M.
  • Page 26 TRANSISTOR 2SC1815Y 1 Q602 13-000040-53P IC 4053 (ANALOG SW) 1 IC901 13-000040-66P IC 4066 (ANALOG SW.) 1 IC902 13-A21V01-TOP MCU 8823KRNG(TCL-A21V01-TO) 1 IC201 14-LED05R-XX1 LED RED FB205 1 D051B 18-CB0102-JNX RES. C.F. 1K OHM 1/6W +/-5% 1 R637 18-CB0102-JNX RES. C.F. 1K OHM 1/6W +/-5%...
  • Page 27 Item No. Description Quantity Req. Designator Remarks 18-CB0682-JNX RES. C.F. 6.8K OHM 1/6W +/-5% 1 R024 18-CB0820-JNX RES. C.F. 82 OHM 1/6W +/-5% 1 R929 18-CE0479-JNX RES. C.F. 4.7 OHM 1/2W +/-5% 1 R918 18-EG0129-JHX RES. FUS. 1.2 OHM 2W +/-5% 1 R420 18-FF0122-JGX RES.
  • Page 28 Item No. Description Quantity Req. Designator Remarks 41-WJ0075-B00 WIRE BARE JUMPER 7.5MM 1 J915 41-WJ0075-B00 WIRE BARE JUMPER 7.5MM 1 L411 41-WJ0080-B00 WIRE BARE JUMPER 8 MM 1 J908 41-WJ0090-B00 WIRE BARE JUMPER 9MM 1 J909 45-SAWF18-590 SAW FILTER F1859 1 Z101 46-28559W-02X PIN BASE *2 TJC1-2A...
  • Page 29 Item No. Description Quantity Req. Designator Remarks 40-UOCASF-RMA P.C.B. REMOTE HANDSET BD 45-COS455-KY1 CERAMIC RESONATOR 455KHz 1 X1501 49-HS46F0-00X RUBBER PAD KEYS 55-HS46FB-0HA CASE LOWER - REMOTE HANDSET 55-HS46FD-0HA DOOR BATT. - REMOTE HANDSET 55-HS46FT-0HA CASE UPPER - REMOTE HANDSET 58-HS46F4-4UI INLAY REMOTE HANDSET 63-B26060-BT2...

  • Page 30: White Balance Adjustment

    Alignment Procedure of 2170SG Color TV 1. FLOWCHART OF ALIGNMENT PROCEDURE Screen & Focus White balance adjustment adjustment adjustment Pincushion correction & Center & Amplitude and Sub-brightness Horizontal Amplitude OSD adjustment adjustment adjustment 2 Adjustment of B+ voltage 1) Apply 120VAC(±5V) to mains power input, and Philips standard testing pattern to RF input.
  • Page 31 Use a color analyzer to measure the white side of the screen. By changing the value of GD, BD, set the reading of the color analyzer to X=285, Y=295. ¢ Ü Separately set the brightness and contrast from min. to max., repeat the step 2 and 3 until the reading of the color analyzer is correct.

  • Page 32: Factory Settings

    Factory settings D-mode: Enter D-Mode by pressing D-Mode ON/OFF key, and then you can enter the D-mode. S-mode: Enter S-Mode by pressing VOLUME DOWN key on the unit until the volume decrease to minimum level, then press the DISPLAY key on the remote handset (don’t release the volume key) and you can enter S- mode.
  • Page 33 Menu 4 (Remote key: “4”) Item Remark CNTX Maximum contrast CNTN Minimum contrast BRTX Maximum brightness BRTN Minimum brightness COLX Maximum color COLN Minimum color TNTX Maximum tint level TNTN Minimum tint level Menu 5(Remote key: “5”) Item Remark BRTC 50% brightness COLC 50% color...
  • Page 34 Bit 3 Bit 4 Bit 5 TV£ ¬ MSP AVL: 1: yes Bit 6 AV£ ¬ MSP AVL£ º 1:yes Bit 7 MONO+SAP£ º 1£ º yes 0£ º no Bit 0 When blue background off (mute pin of CPU): 0: audio mute on 1: audio mute off Bit 1...
  • Page 35 Menu 9(Remote key: “9”) Item Remark Volume 1 Volume 25 Volume 50 V100 Volume 100 VOLMAX Max volume under hotel mode CURTCEN Center of the curtain VOLX Output gain of PIN28 of TMPA8823 or MSP34x5 PWTM When use PWM to mute and no sound when changing channel, this item should be minimum as posible Menu 10(Remote key: “0”) Item...
  • Page 36 Bit 7 Bit 0 America V-CHIP standard 1£º yes 0£º no Bit 1 Canadian V-CHIP 1£º yes 0£º no Bit 2 UNRATED£¬1£º yes 0£º no MDOE8 Bit 3 NO RATING£¬1£º yes 0£º no Time setting for curtain when turn on the set ~Bit 7 ~Bit 2 Bit 3...
  • Page 37 Bit 4 Bit 5 Bit 6 Bit 7 SLO f0 shift(test only) Menu 14(Remote key: “sleep) Item Remark HAFC Bit 1 ~ 0 AFC gain (TV mode) [1CH, bit 5 ~ 4] Bit 3 ~ 2 AFC gain (AV mode) [1CH, bit 5 ~ 4] AGCC NOIS ONTM...
  • Page 38 Item Remark M-COL Mild color M-BRI Mild brightess M-CON Mild contrast M-SHP Mild sharpness Menu 20: no shortcut key Item Remark SEG_POINT1 Highest frequency of VHFL SEG_POINT2 Highest frequency of VHFH DATA_VL VHFL bandswitch£¨ BB£© DATA_VH VHFH bandswitch£¨ BB£© DATA_UF UHF bandswitch£¨...
  • Page 39 +112V PROM 24C08 TUNER MCU+VCD Video SAWF TMPA8823 amplifie CVBS/Y Horizontal output 4052 (VIDEO) Vertical output (VIDEO) STV9302 MSP3425 TDA7057AQ (L,R) (L,R)

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