Magnavox 26MF301B Service Manual

26” LCD TVchassis FL11.3© 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 FL11.3-A_DCCABINET DISASSEMBLY INSTRUCTIONS1. Disassembly FlowchartThis flowchart indicates the disassembly steps for the cabinet parts and the CB

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

4-3 FL11.3-A_DC(S-9)(S-9)(S-9)(S-10)(S-11)(S-7)(S-8)(S-6)(S-4)(S-4)(S-5)(S-5)PCB Holder[4] Jack CBA[3] Digital Main CBA Unit[6] Stand Holder[5] PowerS

4-4 FL11.3-A_DCTV Cable Wiring DiagramCL104BJack CBAPower Supply CBAInverter CBAFunction CBATo LCD Module AssemblyTo Speaker To SpeakerCN3902CN3702CN3

5-1 FL11.3EAELECTRICAL ADJUSTMENT INSTRUCTIONSGeneral Note: “CBA” is abbreviation for “Circuit Board Assembly.”Note: Electrical adjustments are requir

5-2 FL11.3EA1. Purity Check ModeThis mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.1. Enter t

5-3 FL11.3EAThe White Balance Adjustment should be performed when replacing the LCD Panel or Digital Main CBA.3. White Balance AdjustmentPurpose: To m

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

6-1 FL10.2INTHOW TO INITIALIZE THE LCD TVThe purpose of initialization is to place the set in a new out of box condition. The customer will be prompte

7-1 FL11.3FWFIRMWARE RENEWAL MODEEquipment Requireda. USB storage deviceb. Remote Control UnitFirmware Update ProcedureNote: There are two states (th

8-1 FL11.3TRTROUBLESHOOTING[ 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 FL11.3TRCheck Q207, Q208, D205, P-ON-H1 line and their periphery circuit, and service it if defective.LCD+24V is not output.FLOW CHART NO.6Is appr

8-3 FL11.3TRSee FLOW CHART No.8 <P-ON+7V is not output.>AL+13V is not output.FLOW CHART NO.11Ye sNoIs approximately +13V voltage supplied to the

8-4 FL11.3TRP-ON+9V is not output. (LCD+13V is outputted normally.)FLOW CHART NO.14Is approximately +13V voltage supplied to thecollector of Q642?Is a

8-5 FL11.3TR[ Video Signal Section ]NoIs the "L" pulse sent out Pin(1) terminal of remote control receiver (RS102) when the infrared remote

8-6 FL11.3TRPicture does not appear normally.(S-Video input)FLOW CHART NO.5Are the video signal outputted to the Pin(6, 8) ofCN302?Check the line betw

8-7 FL11.3TR[ Audio Signal Section ]Check SP801,SP802 and their periphery circuit,and service it if defective.Are the audio(L/R) signals inputted to t

8-8 FL11.3TRAre the audio(L/R) signals inputted to each pin of CN301?Replace Digital Main CBA Unit.NoYe sAudio is not outputted normally.(Component Au

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

8-9 FL11.3TRYe sAudio is not outputted normally.(HDMI Audio input)FLOW CHART NO.3Are the audio(L/R) signals inputted to Pin(5, 14)of IC771?Check the l

8-10 FL11.3TRYe sAudio is not outputted normally.(Tuner input)FLOW CHART NO.4Are the DIF signals outputted to the Pin(26, 28)of CN302?Check TU301 and

9-1K3KEY SWITCHIC3301(MAIN MICRO CONTROLLER)DIGITAL MAIN CBA UNITFUNCTION CBAPOWER SUPPLY CBACL104BREMOTESENSORRS102AL+3.3VD104POWERSTANDBYD105CN302CN

9-2 FL11.3ABLV2. Video Block DiagramDIGITAL MAIN CBA UNITCOMPONENT-Y-INCOMPONENT-Pb-INCOMPONENT-Pr-INJK731JK732JK733VIDEO-IN4 4S-VIDEO-C-IN6 6S-VIDEO-

9-33. Audio Block DiagramFL11.3ABLAIC771(AUDIO SELECTOR)AUDIO(L)-OUTAUDIO(R)-OUTHDMI-AUDIO(L)-INHDMI-AUDIO(R)-INJK721JK722JK871JK872COMPONENT-AUDIO(L)

9-44. Digital Signal Process Block DiagramFL11.3ABLDDIGITAL MAIN CBA UNITIC3301 (DIGITAL SIGNAL PROCESS)IC3702 (HDMI SW)LCD MODULEASSEMBLYCN3902LLV1(+

9-55. Inverter Block DiagramFL11.3ABLINVINVERTER CBAIC1101 (INVERTER CONTROLLER)BACKLIGHT1212CN1202CN1203BACKLIGHTT1202Q1007Q1004 Q1005INV+35VWH1001Q1

9-66. Power Supply Block DiagramFL11.3ABLPCAUTION !Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (

10-1 FL11.3SCSCHEMATIC DIAGRAMS / CBA AND TEST POINTSStandard NotesWARNINGMany electrical and mechanical parts in this chassis have special characteri

10-2 FL11.3SCLIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES:1. CAUTION:CAUTION: FOR CONTINUED PROTECTION AG

1-1 FL11.3SPSPECIFICATIONS< TUNER / NTSC >ANT. Input ---------------------- 75 Ω Unbal., F type< TUNER / ATSC >< LCD PANEL >< VID

10-3GDSTK8A50DQ6012SC2120-OQ6024321IC601TLP781FD6110.1/100VC6090.068/100VC612560P/2KVC6113300P/250VC691BEADBC6011200P/100VC610D6091500P/100VC613FR154D

10-4VIDEO SIGNAL AUDIO SIGNAL2SP(R)+CN8021SP(R)-12111548103792642 2738 34 3043 28 2439 35 3144 2940 2536 3241 2637 331814 211915 2016 1713 2223DRIVE2P

10-5JK733JK732JK731JK742JK741JK751YCSWJK754JK752JK75339PC731OPENC752OPENC75139PC733OPENC75339PC73275R75175R7530R75710R73410R735OPENR73115KR74339KR7461

10-6AUDIO SIGNALGNDVCCIC871NJM4558M(TE1)1234567820KR891270PC87547KR8792.2C884100R881100KR885100KR883270PC87620KR89247KR8802.2C885100R882100KR886100KR8

10-71SS133D1221CN120111SS133D1219210P/6.3KVC1201OPENC12021SS133D122033KR1229T1201INVERTER TRANS213456781SS133D1227T1202INVERTER TRANS21345678T1203INVE

10-8CL104B6 GND5 REMOTE3 LED14 AL+3.3V1 KEY-IN12 P-ON-H14.7KR111SW103SW106 SW104 SW1018.2KR115SW1074.7KR114SW10518KR1162.7KR11310KR109220R108D105L-53H

10-912345678IC4202OPENA0A1A2GND SDASCLWPVCCOPENR39311 STV3 OE16TP4 CPV5 POL2 XA0CN390224 GND13 LLV3(+)10 LLV4(-)15 LLVCLK(-)16 LLVCNK(+)12 LLV3(-)19 L

10-10123451413121115678910JK3703D-SUB CONNECTORGND7COM-VIDEO-Y-IN15GND1GND9S-VIDEO-Y-IN8SPDIF2RESET23AUDIO-MUTE20CN3702KEY-IN129GND25S-VIDEO-C-IN6COM-

10-11J21ACLK1234567 9108 111213 151614 17 18 19 202130 28 2729 26 2540 39 24 23 2238 37 36 34 3335 32 31IC3803BU9414FV-E2ADDRMODEVSS2PLLFILNUNUVDDANAT

10-12R19EJTCKIC3201K4T51163QG-HCF7*B VDDJ2VREFE2 NUK2CKEJ8CKK8CKL8NUK7RASL7CASK3WEL1BA2/NUL3BA1L2BA0R2A12P7A11M2A10/APP3A9P8A8P2A7N7A6N3A5N8A4N2A3M7A2

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

10-13P-ON+3.3V1921 AL+3.3VP-ON-H21GND23OE224P-ON+3.3V20P-ON-H19REMOTE25GND3LED-R13BACKLIGHT-ADJ28BACKLIGHT-SW26CN3701VCOM-PWM29VCOM-PWMBACKLIGHT-SWREM

10-14SCL016 HDMI-DATA12 CLOCK(-)JK37021 DATA2(+)6 DATA1(-)3 DATA2(-)14 NU9 DATA0(-)10 CLOCK(+)7 DATA0(+)5 TMDS DATA1 SHIELD17 GND18 +5V13 HDMI-CEC15 H

10-15TM601TM602BA01A0F0102 4 ARISK OF FIRE-REPLACE FUSE AS MARKED101 2 3 4 5 6 7 8 9TOOL NO.C7A3 A3BA01A0F0102 4BJ318GNDJ124AOUT-LJ319GNDJ125J123AMP-L

10-16J318GNDJ124AOUT-LJ319GNDJ125AMP-LJ126AMP-RR402J127S-SWJ128AOUT-LR210J129AOUT-RR405R212R407J320GNDJ321GNDJ322GNDJ323GNDJ324GNDJ130SEL-RJ325GNDJ131

10-17C7A3 A3C7A3 A3BA01A0F0103 2 ABA01A0F0103 2 BVOLDOWNMENUCHUPCHDOWNPOWERVOLUPSTD BY POWERABC12345GNDGNDGNDGNDJ1020J1022J1023J1024J1025J1026J1027J10

10-18VOLDOWNMENUCHUPCHDOWNPOWERVOLUPSTD BYPOWERABC12345GNDGNDGNDGNDJ1020J1022J1023J1024J1025J1026J1027J1028J1029WH1001D1101WH1002D1102D1103D1104R1101C

WAVEFORMSFL11.3WF11-1Input: NTSC Color Bar Signal (with 1kHz Audio Signal)WF1 ~ WF7 = Waveforms to be observed at Waveform check points. (Shown

FL11.3AWI12-1WIRING DIAGRAMINVERTER CBATUNER UNITHDMI- AUDIO(L)-INHDMI- AUDIO(R)-INAUDIO(L) -OUTAUDIO(R) -OUTAC601AC CORDPOWER SUPPLY CBADIGITAL MAIN

13-1 FL11.3-A_CEXEXPLODED VIEWSCabinetL6A14B1L8L2A21L14L1L8B5B5A10S5A1LCD1B4A13B11L3B8B9L24L24L8L8L8L8L1L1L1L1L5L8L8L6L8B40L2B17L2L2S5Function CBACL80

13-2 FL11.3PEXPackingS5S1Ta peFixlon TapePacking TapePacking TapeS3S2S6X1X10Some Ref. Numbers are not in sequence.X2L9X6X4X3S5StandAssemblyFRONTFRONTS

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

2011/04/07 14-1 A17A1CA.fmPARTS LIST [LC260EM2 (Serial No.: DS1)]Mechanical PartsPRODUCT SAFETY NOTE: Products marked with a # have special characteri

2011/04/07 14-2 A17A1EL.fmElectrical PartsPRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before repla

2011/04/07 14-3 A17A1EL.fmC811 CHIP CERAMIC CAP.(1608) B K 0.47µF/16V CHD1CK30B474C815 CHIP CERAMIC CAP. F Z 1µF/10V CHD1AZ30F105C816 ELECTROLYTIC CAP

2011/04/07 14-4 A17A1EL.fmICSIC201 IC TL3472CDR NSZBA0TTY115IC601# IC PHOTOCOUPLER TLP781F(D4-FUNBLL F) QPEL781FBLLFIC631 IC LD1117V NSZBA0SSS046IC771

2011/04/07 14-5 A17A1EL.fmR613 RES CARBON FILM T 1/4W J 1.5k Ω RCX4152T1001R614# METAL OXIDE FILM RES. 2W J 0.27 Ω RN02R27ZU001R615 RES CARBON FILM T

2011/04/07 14-6 A17A1EL.fmJACK CBAINVERTER ASSEMBLYINVERTER CBABC301 BEADS INDUCTOR FBR07HA121SB-00 LLBF00STU030BC601 BEADS INDUCTOR FBR07HA121SB-00 L

2011/04/07 14-7 A17A1EL.fmD1002 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133D1003 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133D1004 SWITCHING DIODE 1SS133(T

2011/04/07 14-8 A17A1EL.fmFUNCTION CBAR1227 RES CHIP 1608 1/10W F 47.0k Ω RTW4702HH008R1228 RES CHIP 1608 1/10W F 47.0k Ω RTW4702HH008R1229 RES CHIP 1

26MF301B/F7(A17A4UH)(Serial No.: DS2)2011032226MF301B/F7(A17A4UH)(Serial No.: DS2)Different parts from the original model LC260EM2(DS1)Ref. No. Descri

15-1 FL11.3REVREVISION HISTORYChassis FL11.3• 2011-03-15 LC260EM2 (Serial No. : DS1) added• TBD LC260SS2 (Serial No.: DS1) added• TBD 26MF301B/F7 (Ser

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

FL11.3COMCOMPARISON LIST OF MODEL NAMEChassis FL11.3LC260EM2 (DS1) A17A1UHLC260SS2 (DS1) A17A2UH26MF301B/F7 (DS1) A17A0UH(DS2) A17A4UH

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