User manual FUNAI LT850-M32 SERVICE MANUAL

[. . . ] SERVICE MANUAL This Service Manual is for the LT850-M32 (A0CF0EP) model. For the LT850-M32 (A0CF0EP) model, the letter (A0CF0EP) is printed on the Serial Number Label on the back of the unit. Label "A0CF0EP" 32 COLOR LCD TELEVISION LT850-M32 32 COLOR LCD TELEVISION LT850-M32 TABLE OF CONTENTS Specifications . 15-1 The LCD panel is manufactured to provide many years of useful life. [. . . ] Also, in order to have the ability to increase the input slowly, when troubleshooting this type of power supply circuit, a variable isolation transformer is required. CAUTION !Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail. NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal. For continued protection against fire hazard, replace only with the same type fuse. WF7 PIN 22 OF CN401 WF2 PIN 27 OF CN401 WF3 PIN 29 OF CN401 WF1 PIN 2 OF CN404 WF4 PIN 4 OF CN404 WF5 PIN 6 OF CN404 WF6 PIN 8 OF CN404 WF10 PIN 26 OF CN404 WF9 PIN 28 OF CN404 WF8 PIN 29 OF CN404 10-16 BA0CF0F01011 Inverter CBA, Function CBA, IR Sensor CBA, Power SW CBA & Junction CBA Top View NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal. Function CBA Power SW CBA IR Sensor CBA Junction CBA Inverter CBA 10-17 BA0CF0F01021 Inverter CBA, Function CBA, IR Sensor CBA, Power SW CBA & Junction CBA Bottom View NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal. Junction CBA IR Sensor CBA Power SW CBA Function CBA Inverter CBA 10-18 BA0CF0F01021 WAVEFORMS WF1 ~ WF6 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram. ) Input: PAL Color Bar Signal (with 1kHz Audio Signal) WF1 Pin 2 of CN404 WF4 Pin 4 of CN404 VIDEO 0. 2V 20µs 20 VIDEO-Y 0. 2V 20 20µs WF2 Pin 27 of CN401 WF5 Pin 6 of CN404 S-VIDEO-Y 0. 2V 20µs 20 VIDEO-Pb 0. 2V 20µs 20 WF3 Pin 29 of CN401 WF6 Pin 8 of CN404 S-VIDEO-C 0. 2V 20µs 20 VIDEO-Pr 0. 2V 20µs 20 11-1 LC8. 5PWF WF7 ~ WF10 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram. ) Input: PAL Color Bar Signal (with 1kHz Audio Signal) WF7 Pin 22 of CN401 WF10 Pin 26 of CN404 AUDIO(L) 0. 5V 0. 5ms 0. 5m VIDEO-R 0. 5V 20µs 20 WF8 Pin 29 of CN404 VIDEO-B 0. 5V 20µs 20 WF9 Pin 28 of CN404 VIDEO-G 0. 5V 20µs 20 11-2 LC8. 5PWF DIGITAL MAIN CBA UNIT COMPONENT -Y-IN CN600 1 2 ACL HOT-GND CN1900 1 2 HDMICONNECTOR-1 COMPONENT -Pb-IN TUNER UNIT BACK LIGHT COMPONENT -Pr-IN CN1050 1 2 COMPONENTAUDIO(L)-IN HDMICONNECTOR-2 COMPONENTAUDIO(R)-IN POWER SUPPLY CBA CN1100 1 2 BACK LIGHT S-VIDEO -IN HDMICONNECTOR-3 VIDEO-IN CN1150 1 2 BACK LIGHT AUDIO(L) -IN AUDIO(R) -IN CN405 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 CN1001 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CN1200 1 2 BACK LIGHT CL600 GND INV+16V GND BACKLIGHT-ADJ BACKLIGHT-SW PROTECT3 GND LCV+16V LCD+16V LCD+24V GND P-ON+3. 3V LCD-6. 8V VCOM GND CL3901 STV XA0 OE1 CPV POL TP GND LLV5(+) LLV5(9) LLV4(+) LLV4(-) LLV3(+) LLV3(-) GND LLVCLK(-) LLVCLK(+) GND LLV2(+) LLV2(-) LLV1(+) LLV1(-) LLV0(+) LLV0(-) GND D-SUB CONNECTOR CN3901 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 PCAUDIO-IN CN403 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CN401 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CI CARD SLOT CL403 BACKLIGHT-ADJ BACKLIGHT-SW GND VCOM-PWM OE2 SCART-OUT-SEL(NU) GND AMP(R)-OUT GND AMP(L)-OUT KEY-IN1 AUDIO-MUTE REMOTE LED1 GND DIF-OUT2 GND DIF-OUT1 GND IF-AGC GND SDA SCL GND SIF(-) SIF(+) GND GND TU-CVBS CN801 SP(R)+ 2 CL801 SP(R)- 1 SP801 SPEAKER R-CH CN3703 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CN3704 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CL401 NU HEADPHONE-DET HEADPHONE(L) HEADPHONE(R) GND RGB-AUDIO(L)-OUT RGB-AUDIO(R)-OUT GND RGB-AUDIO(R)-IN RGB-AUDIO(L)-IN GND RGB-AUDIO(L)-OUT2 RGB-AUDIO(R)-OUT2 GND RGB-AUDIO(R)-IN2 RGB-AUDIO(L)-IN2 GND COM-AUDIO(R) COM-AUDIO(L) GND AUDIO(R) AUDIO(L) GND PC-AUDIO(R) PC-AUDIO(L) GND S-VIDEO-Y-IN GND S-VIDEO-C-IN WIRING DIAGRAMS 12-1 CN802 SP(L)+ 2 CL802 SP(L)- 1 SP802 SPEAKER L-CH CN1003 1 2 3 4 5 6 7 8 9 10 11 HEADPHONE JACK USB JACK SCART JACK 1 CL1003 GND LCV+16V LCD+16V LCD+24V GND P-ON+3. 3V P-ON+3. 3V LCD-6. 8V GND VCOM GND INVERTER CBA CN601 1 2 AC-IN AC-IN CN701 1 2 AC701 AC CORD LCD MODULE ASSEMBLY SCART JACK 2 POWER SW CBA CN402 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CN404 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CN101 1 2 3 4 5 6 GND REMOTE AL+3. 3V POWER-LED STANDBY-LED KEY-IN1 CN1901 6 5 4 3 2 1 CL102A 1 2 3 4 5 6 GND REMOTE AL+3. 3V POWER-LED STANDBY-LED KEY-IN1 CL102B 1 2 3 4 5 6 CL103A 1 2 3 CL402 P-ON-H1 P-ON-H2 RESET PROTECT3 PROTECT1 P-ON+11V GND GND GND AL+3. 3V GND GND P-ON+3. 3V P-ON+3. 3V P-ON+3. 3V P-ON+3. 3V GND GND AL+3. 5V AL+3. 5V AL+3. 5V GND GND AL+5V GND AL+5V P-ON+5V P-ON+5V P-ON+5V CN3701 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CN3702 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 CL404 S-SW VIDEO-IN GND COM-VIDEO-Y-IN GND COM-VIDEO-Pb-IN GND COM-VIDEO-Pr-IN GND SLOW-SW2 GND RGB-VIDEO-IN2 GND VIDEO-OUT2 GND VIDEO-R2 GND SLOW-SW GND FBIN1 GND RGB-VIDEO-IN GND VIDEO-OUT GND VIDEO-R GND VIDEO-G VIDEO-B AL+3. 3V GND KEY-IN1 CL103B 1 2 3 A0CF0WI JUNCTION CBA IR SENSOR CBA FUNCTION CBA EXPLODED VIEWS Cabinet A10 B16 A1 Inverter CBA B16 B16 CL802 L2 CL600 L6 SP802 B16 A2 A3 CL102A CL801 L2 SP801 B5 LCD1 CL3901 L6 B14 CL401 CL404 CL403 B1 Digital Main CBA Unit X3301 CL402 L6 B2 L9 L4 B18 L6 A11 B20 L7 B17 A12 B10 Stand Assembly L3 L6 L3 B10 L3 B9 L1 B7 L6 L6 L2 CL103A L2 B6 Function CBA L2 Junction CBA IR Sensor CBA L6 CL1003 B15 AC701 L5 L1 Power Supply CBA L2 L1 L1 L1 B12 Power SW CBA L10 S6 B3 L3 B11 L3 L10 A8 L2 B11 L2 L2 L1 L2 L2 B4 A4 A6 B8 See Electrical Parts List for parts with this mark. L6 L6 L4 L6 13-1 A0CF0CEX Packing Some Ref. S2 X2-1 X2-2 S8 Stand Assembly S7 S9 Tape S2 X1 L7 Tape X3 Packing Tape S5 X4 S3 Packing Tape FR ON T FR ON T S6 S1 13-2 A0CF0PEX MECHANICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a !Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing. NOTE: Parts that are not assigned part numbers (---------) are not available. Ref. A1 A2 A3 A4 A10 A11 B1 B2 B3 B4 B5 B6 B14 B15 B16 B17 B18 CL401 CL402 CL403 CL404 CL600 CL801 CL802 CL1003 CL3901 L2 L4 L6 L7 L9 LCD1 SP801 SP802 X3301 S5 S7 X3 Description STAND ASSEMBLY A0CF0EZ FRONT CABINET A93F0FP CONTROL PLATE A91F0UH DECORATION PLATE A0CF0EP REAR CABINET A0CF0EP POP LABEL A0CN0EP JACK HOLDER A93F0FP SHILED BOX(32W-EU) A93F0FP TUNER SHIELD A93F0FP STAND HOLDER 32W A94F0UH WALL MOUNT BRACKET A84N0UH SPEAKER HOLDER (L) A94F0UH SPEAKER HOLDER (R) A94F0UH SEPARATION SHEET (POW) A93F0FP SEPARATION SHEET (INV) A93F0FP CLOTH(10X180XT0. 5) L0336JG GASKET A8AF0UH GASKET(4X15XT3. 0) A0CN0EP WIRE ASSEMBLY 29PIN FFC 29PIN 50MM WIRE ASSEMBLY 29PIN FFC 29PIN 50MM WIRE ASSEMBLY 29PIN FFC 29PIN 50MM WIRE ASSEMBLY 29PIN FFC 29PIN 50MM WIRE ASSEMBLY 15PIN FFC 15PIN 140MM WIRE ASSEMBLY 2PIN 2PIN 100MM RED BLACK WIRE ASSEMBLY 2PIN 2PIN 310MM RED BLACK WIRE ASSEMBLY 11PIN FFC 11PIN 110MM WIRE ASSEMBLY 24PIN FFC 24PIN 117. 5MM SCREW P-TIGHT 3X10 BIND HEAD+ SCREW S-TIGHT M3X8 BIND HEAD+ ASSEMBLED SCREW ( D9 M3X6 ) A71F0UH STAND SCREW KIT A93F0FP HEX SCREW #4-40 7MM LCD MODULE CMO 6BIT A GRADE SPEAKER MAGNETIC S0412F08 or SPEAKER MAGNETIC YDP411-17FN SPEAKER MAGNETIC S0412F08 or SPEAKER MAGNETIC YDP411-17FN THERMOSTAR TMS-L-2(12*12HC) Part No. 1ESA23775 1EM024031A 1EM325799 1EM124493 1EM025285 ---------1EM123494A 1EM123493A 1EM325981 1EM222763 1EM323797 1EM123233 1EM123234 1EM326100 1EM326101 0EM408827 1EM425861 1EM431762 WX1A94F0-101 WX1A94F0-101 WX1A94F0-101 WX1A94F0-101 WX1A94F0-104 WX1A94F0-203 WX1A0CF0-103 WX1A94F0-105 WX1A91F6-102 GBHP3100 GBHS3080 1EM424392B 1ESA20855 1EM430139 UJ32MXA DSD1609XQ001 DS1610EFU001 DSD1609XQ001 DS1610EFU001 XK10000X4003 1EM321546 1EM428757 NH201RD X1 X2-1!X4 S3 S6 S8 S9 Description RATING LABEL A0CF0EP CLOTH(B) L5201U0 15X10X1. 0T SCREW P-TIGHT M4X14 BIND HEAD+BLK SCREW P-TIGHT 3X10 BIND HEAD+ DOUBLE SEMS SCREW M4X10 + BLK ASSEMBLED SCREW ( D9 M3X6 ) A71F0UH SCREW S-TIGHT 3X10 WASHER HEAD+BLK Part No. ---------0EM400076 GBHP4140 GBHP3100 FPH34100 1EM424392B GCHS3100 1EM431039 1EM024165 1EM024166 ---------1EM123633 1EM123634 0EM408420A 1EMN25879 1EMN25880 XB00M00MS001 PACKING CARTON A0CF0EP STYROFOAM TOP A93F0FP STYROFOAM BOTTOM A93F0FP SERIAL NO. LABEL L9750UA STAND HOLD PAD TOP A93F1EP STAND HOLD PAD BOTTOM A93F1EP ACCESSORIES BAG POLYETHYLENE 235X365XT0. 03 OWNERS MANUAL(WE-10) A0CF0EP OWNERS MANUAL(PL-7) A0CF0EP BATTERY DRY R03REL/2PA PACKING SET BAG L4300UA STAND BAG A94F0UH ACCESSORY REMOTE CONTROL NH201RD 20100428 14-1 A0CF0CA ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a !Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing. Parts that are not assigned part numbers (---------) are not available. Tolerance of Capacitors and Resistors are noted with the following symbols. C. . . . . ±0. 25% G. . . . . ±2% M. . . . . ±20% D. . . . . ±0. 5% J. . . . . . ±5% N. . . . . ±30% F. . . . . ±1% K. . . . . ±10% Z. . . . . +80/-20% Ref. A0CF0MMA-003 C303 C301 Description CHIP CERAMIC CAP CH J 330pF/50V or . [. . . ] 1/4W J 1M or RES CHIP 3216 1/4W J 1. 0M R1988 RES CARBON FILM 1/4W J 1k or RES CARBON FILM T 1/4W J 1. 0k or RES CARBON FILM 1/4W J 1. 0k R1943 RES CHIP 3216 1/4W J 680k or CHIP RES. 1/4W J 680k or RES CHIP 3216 1/4W J 680k MISCELLANEOUS A6 B8 B11 B12 BC1301 BC1500 BC1501 BC1550 BC1551 BC1930 BC1931 L2 L3 T1950!AC CORD HOLDER A94F0UH AC SWITCH HOLDER A0CF0EP HEAT SINK PNA A94F0UH HEAT SINK PNB ASSEMBLY A94F0UH WIRE COPPER 6111-06003-0120 or WIRE COPPER JP0. 6MM BEADS INDUCTOR FBR07HA121SB-00 or BEAD INDUCTOR B29 RID 2. 3X7. 5X7. 5T BEADS INDUCTOR FBR07HA121SB-00 or BEAD INDUCTOR B29 RID 2. 3X7. 5X7. 5T BEADS INDUCTOR FBR07HA121SB-00 or BEAD INDUCTOR B29 RID 2. 3X7. 5X7. 5T BEADS INDUCTOR FBR07HA121SB-00 or BEAD INDUCTOR B29 RID 2. 3X7. 5X7. 5T BEADS INDUCTOR FBR07HA121SB-00 or BEAD INDUCTOR B29 RID 2. 3X7. 5X7. 5T BEADS INDUCTOR FBR07HA121SB-00 or BEAD INDUCTOR B29 RID 2. 3X7. 5X7. 5T SCREW P-TIGHT 3X10 BIND HEAD+ SCREW B-TIGHT D3X8 BIND HEAD+ TRANS POWER BCK-35-0655 or TRANS POWER BCK-35AU R1950 RES CHIP 3216 1/4W J 1. 0M or CHIP RES. 1/4W J 1M or RES CHIP 3216 1/4W J 1. 0M R1951 RES CHIP 3216 1/4W J 1. 0M or CHIP RES. 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