Magnavox 26MD301B Service Manual

32” LCD TVchassis FL11.4© 2011 Funai Electric Co., Ltd.All rights reserved. No part of this manual may be reproduced, copied, transmitted, disseminate

3-2 TVN_SN3. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the

3-3 TVN_SNWith Iron Wire:1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to

3-4 TVN_SNInstructions for Handling Semi-conductorsElectrostatic breakdown of the semi-conductors may occur due to a potential difference caused by el

4-1 FL11.4-A_DCCABINET DISASSEMBLY INSTRUCTIONS[TYPE A]1. Disassembly FlowchartThis flowchart indicates the disassembly steps for the cabinet parts an

4-2 FL11.4-A_DC[2] Rear Cabinet(S-1)[1] Stand Assembly(S-2)(S-4)(S-3)(S-2)(L-1)(L-1)(L-1)(S-3)(S-2)(S-2)(L-1)Fig. D1

4-3 FL11.4-A_DC[3] Digital Main CBA Unit[5] Stand Bracket[4] Power Supply CBA[7] LCD ModuleAssembly[9] FunctionCBA Unit[10] Front Cabinet[8] IR Sensor

4-4 FL11.4-A_DCTV Cable Wiring DiagramCN200CN1102CN1101CN1100CN3005CN632 CN3701CN4001CN601CN600To AC CordTo SpeakerTo LCD ModuleAssemblyCN3802CN3102CN

4-5 FL11.4-B_DC[TYPE B]1. Disassembly FlowchartThis flowchart indicates the disassembly steps for the cabinet parts and the CBA in order to gain acces

4-6 FL11.4-B_DC[2] Rear Cabinet(S-1)[1] Stand Assembly(S-2)(S-4)(S-3)(S-2)(L-1)(L-1)(L-1)(S-3)(S-2)(S-2)(L-1)Fig. D1

4-7 FL11.4-B_DC[3] Digital Main CBA Unit[5] Stand Bracket[4] Power Supply CBA[7] LCD ModuleAssembly[9] FunctionCBA Unit[10] Front Cabinet[8] IR Sensor

IMPORTANT SAFETY NOTICEProper service and repair is important to the safe, reliable operation of all Funai Equipment. The service procedures recommend

4-8 FL11.4-B_DCTV Cable Wiring DiagramCN200CN1102CN1101CN1100CN3005CN632 CN3701CN4001CN601To AC CordTo SpeakerTo LCD ModuleAssemblyCN3802CN3102CN3801C

5-1 LC9EAELECTRICAL ADJUSTMENT INSTRUCTIONSGeneral Note: “CBA” is abbreviation for “Circuit Board Assembly.”Note: Electrical adjustments are required

5-2 LC9EA1. Purity Check ModeThis mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.1. Enter the

5-3 LC9EAThe White Balance Adjustment should be performed when replacing the LCD Panel or Digital Main CBA.3. White Balance AdjustmentPurpose: To mix

6-1 LC9_INTHOW TO INITIALIZE THE LCD TVThe purpose of initialization is to place the set in a new out of box condition. The customer will be prompted

7-1 FL11.4FWFIRMWARE RENEWAL MODEEquipment Requireda. USB storage deviceb. Remote Control UnitFirmware Update ProcedureNote: There are two states (th

8-1 FL11.4ATRTROUBLESHOOTING [Power Supply Section] The power cannot be turned on. The fuse blows out.FLOW CHART NO.1FLOW CHART NO.2Is normal state re

8-2 FL11.4ATRCheck Q210, Q211, D207, P-ON-H1 line and their periphery circuit, and service it if defective.LCD+24.5V is not output.FLOW CHART NO.6Is a

8-3 FL11.4ATRSee FLOW CHART No.5 <P-ON+24V is not output.>AL+5V is not output.FLOW CHART NO.9Is approximately +24V voltage supplied to thecollec

8-4 FL11.4ATR[Video Signal Section]NoIs the "L" pulse sent out Pin(1) terminal of remote control receiver (RS4051) when the infrared remote

TABLE OF CONTENTSSpecifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-5 FL11.4ATR[Audio Signal Section]SP3801, SP3802, CL3801 or CL3802 may be defective. Check and replace these parts.Audio is not outputted normally.F

9-1BLOCK DIAGRAMSFL11.4ABLS1. System Control Block DiagramTO INVERTERBLOCK DIAGRAMTO VIDEO/AUDIOBLOCK DIAGRAMTO POWER SUPPLY BLOCK DIAGRAMPROTECT1P-ON

9-22. Video/Audio Block DiagramFL11.4ABLVAUDIO(L)-INAUDIO(R)-INJK3701DIGITAL MAIN CBA UNIT3417IC3801 (AUDIO AMP)19MUTE CONTROLSTANDBYDRIVE PWMJK3702DI

9-33. Digital Signal Process Block DiagramFL11.4ABLDDIGITAL MAIN CBA UNITIC3005 (DIGITAL SIGNAL PROCESS)LCD MODULEASSEMBLYCN3005LLV1(+)21LLV1(-)20LLV0

9-44. Inverter Block DiagramFL11.4BLINVPOWER SUPPLY CBAIC1200(PWM CONTROL)BACKLIGHT1212CN1101CN1102BACKLIGHTT1101Q1201Q1300Q1303+24VQ1700T1102OUTPUTPR

9-5FL11.4ABLP5. Power Supply Block DiagramCAUTION !Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (

10-1 FL11.4SCSCHEMATIC DIAGRAMS / CBA AND TEST POINTSStandard NotesWARNINGMany electrical and mechanical parts in this chassis have special characteri

10-2 FL11.4SCLIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES:1. CAUTION:CAUTION: FOR CONTINUED PROTECTION AG

10-3SK16-T/RD64922KR254D211100/25VC6383.9KR60947KR2664321IC601TLP781F(D4-FUNBLL F)2SC2120-YQ2210.47/250VC60122KR2530.47/250VC600KTC3875S-Y-RTK/PQ631BE

10-4P-ON+3.3V 6Q2002SA1576UBTLQP-ON-H110KR225GND 112.2/50VC203OPENC210PROTECT3OPENC6751000PC211P-ON+3.3VOPENC20722/50VC2081R2070R210GND 5VCOM-PWM1.2KR

1-1 FL11.4SPSPECIFICATIONS< TUNER / NTSC >ANT. Input ---------------------- 75 Ω Unbal., F type< TUNER / ATSC >< LCD PANEL >< VID

10-5T1102INVERTER TRANS21435678Q1702TK50P04M1GDS39KR111210R122213R1117100R12162200/35VC170925V6BSB-T26D13000R1214100KR1510D1507DAN202U0.022C1705100R11

10-6CN40011GND2KEY-IN10R4006EDZTE615.6BD4001SW40062.2KR40072.2KR4005SW4005 SW40042.7KR40044.7KR40038.2KR400218KR4001SW4003 SW4002 SW4001SW4007CN40021G

10-77 GND5 POL9 LLV5(+)10 LLV4(-)CN300524 GND20 LLV1(-)2 XA020 LLV1(-)8 LLV5(-)13 LLV3(+)17 GND16 LLVCNK(+)18 LLV2(-)8 LLV5(-)12 LLV3(-)25 P-ON+3.3V7

10-8B12D30401SS400D3045OPENP-ON+5VD3049OPENA10NUD9NUD3053OPEN4.7KR3321C8NU0.1C3195B9NU75R336410KR3358B1175R3377A12C10B14VSINA16IF-AGCD10NUD8A14HSIN47R

10-9IC3002K4T51163QI-HCF7*A VDDJ2VREFE2 NUK2CKEJ8CKK8CKL8CSK7RASL7CASK3WEL1BA2/NUL3BA1L2BA0R2A12P7A11M2A10/APP3A9P8A8P2A7N7A6N3A5N8A4N2A3M7A2M3A1M8A0K

10-100.1C312410C33210.1C3157J5VCCQ18OPENC3121M4VCCQ18OPENC3158D6AVDD33100R3221F12IC3005(4/6)R8A05011BG-U0*1VCC33STBF8AVDD120.1C31480.1C3160L3016BLM21P

10-114P-ON+5V6KEY-IN12REMOTE7LIGHT5LED1CN31021GND3AL+3.3V2KEY-IN1CN31011GNDAUDIO-MUTELED1REMOTE100R3552AL+3.3VP-ON+5V100R35512SC4081UBTLQQ3501OPENR355

10-1216 HDMI-DATA14 NU17 GND13 HDMI-CEC15 HDMI-CLOCK10C3316L3046BLM21PG221SN1DP-ON+3.3VAL+3.3VQ30142SK3018T10627KR3237A4A3B4B1A1B3B2A214 NU9 TMDS-D0(-

10-131 2 3 4 5 6 7 8 9 10TOOL NO.C7A3 A3BA17F1F0102 2REPLACE FUSE AS MARKEDRISK OF FIRE-A17F1MPWJE234498234BC D EFHOTCOLDCOLDHOT1AF6014A/125VGNDJ1020R

10-14234BCDEFHOTCOLDCOLDHOT1AF6014A/125VGNDJ1020R211J1021IS5VS2J1022J1023GNDPROT5J1024LN1J1025J1026VS6HN1J1027C1700VSENJ1028C1701R601LN1J1029R602R605R

2-1 LTVN_ISPIMPORTANT SAFETY PRECAUTIONSPrior to shipment from the factory, our products are strictly inspected for recognized product safety and elec

10-151 2 3 4 5 6 7 8 9 10TOOL NO.C7A3 A3BA17F8F0102 2REPLACE FUSE AS MARKEDRISK OF FIRE-A17F8MPWTE234498234BC D EFHOTCOLDCOLDHOT1AF6014A/125VGNDJ1020R

10-16234BCDEFHOTCOLDCOLDHOT1AF6014A/125VGNDJ1020R211J1021IS5VS2J1022J1023GNDPROT5J1024LN1J1025J1026VS6HN1J1027C1700VSENJ1028C1701R601LN1J1029R602R605R

WAVEFORMSFL11.4WF11-1Input: Component Color Bar Signal (480i, 480p, 720p or 1080i) (with 1kHz Audio Signal)WF1 ~ WF4 = Waveforms to be o

FL11.4AWI12-1WIRING DIAGRAMTUNER UNITAC600AC CORDPOWER SUPPLY CBADIGITAL MAIN CBA UNITHDMI-CONNECTOR-1HDMI-CONNECTOR-2PC-RGB-INUSB JACKLCD MODULEASSEM

13-1 FL11.4 -A_CEXEXPLODED VIEWSCabinet [TYPE A]LC320EM2 (Serial No.:DS1),32MF301B/F7 (Serial No.:DS1),LC320SS2 (Serial No.:DS1)See Electrical Parts L

13-2 FL11.4 -B_CEXCabinet [TYPE B]See Electrical Parts List for parts with this mark.Digital Main CBA UnitFunction CBA UnitIR Sensor CBA UnitPower Sup

13-3 FL11.4_PEXPackingS6S1Packing TapePacking TapeS7X1Some Ref. Numbers are not in sequence.L28X2S4X6S3StandAssemblyX3X4FRONTFRONTTa p eS5Ta p e

2011/05/12 14-1 A17F0CA.fmTYPE APARTS LIST [32MF301B/F7 (Serial No.: DS1)]Mechanical PartsPRODUCT SAFETY NOTE: Products marked with a # have special c

2011/05/12 14-2 A17F0EL.fmElectrical PartsPRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before repla

2011/05/12 14-3 A17F0EL.fmC1301 CHIP CERAMIC CAP.(1608) B K 1000pF/50V CHD1JK30B102C1302 ELECTROLYTIC CAP. 10µF/50V M CE1JMASDL100C1303 CHIP CERAMIC C

2-2 LTVN_ISP3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and addi

2011/05/12 14-4 A17F0EL.fmQ222 TRANSISTOR 2SA950-O (TE2 F T) QQS002SA950FQ600# FET MOS TK10A50D QFWZTK10A50DQ601# TRANSISTOR 2SC2120-Y(TE2 F T) QQSY2S

2011/05/12 14-5 A17F0EL.fmR1102 RES CHIP 1608 1/10W F 2.20k Ω RTW2201HH008R1103 RES CARBON FILM T 1/4W G 470 Ω RCX4471T1002R1104 RES CHIP 1608 1/10W F

2011/05/12 14-6 A17F1CA.fmTYPE APARTS LIST [LC320EM2 (Serial No.: DS1)]Mechanical PartsPRODUCT SAFETY NOTE: Products marked with a # have special char

2011/05/12 14-7 A17F1EL.fmElectrical PartsPRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before repla

2011/05/12 14-8 A17F2CA.fmTYPE APARTS LIST [LC320SS2 (Serial No.: DS1)]Mechanical PartsPRODUCT SAFETY NOTE: Products marked with a # have special char

2011/05/12 14-9 A17F2EL.fmElectrical PartsPRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before repla

32MF301B/F7(A17F0UH)(Serial No.: DS2)2011042132MF301B/F7(A17F0UH)(Serial No.: DS2)Different parts from the original model 32MF301B/F7(DS1)Ref. No. Des

LC320EM2(A17F1UH)(Serial No.: DS3)20110414LC320EM2(A17F1UH)(Serial No.: DS3)Different parts from the original model 32MF301B/F7(DS1)Ref. No. Descripti

LC320SS2(A17F2UH)(Serial No.: DS2)20110414LC320SS2(A17F2UH)(Serial No.: DS2)Different parts from the original model 32MF301B/F7(DS1)Ref. No. Descripti

LC320EM2(A17F8UT)(Serial No.: TH1)20110421LC320EM2(A17F8UT)(Serial No.: TH1)Different parts from the original model 32MF301B/F7(DS1)Ref. No. Descripti

2-3 LTVN_ISPPrecautions during ServicingA. Parts identified by the # symbol are critical for safety.Replace only with part number specified.B. In addi

15-1 FL11.4REVREVISION HISTORYChassis FL11.4• 2011-02-08 LC320EM2 (Serial No. : DS1) added• 2011-03-16 32MF301B/F7 (Serial No. : DS1) added• 2011-03-1

FL11.4COMCOMPARISON LIST OF MODEL NAMEChassis FL11.432MF301B/F7 (DS1) A17F0UH(DS2) A17F0UH(TH1) A17FAUTLC320EM2 (DS1) A17F1UH(DS3) A17F1UH(TH1) A17F8U

2-4 LTVN_ISPSafety Check after ServicingExamine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and

3-1 TVN_SNSTANDARD NOTES FOR SERVICINGCircuit Board Indications1. The output pin of the 3 pin Regulator ICs is indicated as shown.2. For other ICs, pi