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12-1

L4905CEX

EXPLODED VIEWS

Cabinet

SP802

SP801

Main CBA

AC601

CLN802

CLN801

CLN551

V501

L691

CRT CBA

Scotch Tape #880

See Electrical Parts List
for parts with this mark.

Digital CBA Unit

PB6

PB4

Содержание IWT3206

Страница 1: ...SERVICE MANUAL 32 ANALOG DIGITAL COLOR TELEVISION IWT3206...

Страница 2: ...evaluate and advice the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way Consequently Funai has not undertaken any such broad...

Страница 3: ...trol range dB 6 2 Brightness APL 100 ft L 20 3 Color Temperature K 9200 Description Condition Unit Limit 1 Video S N dB 43 2 Audio S N W LPF dB 45 Description Condition Unit Limit 1 RECEIVED FREQ RANG...

Страница 4: ...lightly below these specifications Limit specifications represent the absolute worst condition that still might be considered acceptable In no case should a unit fail to meet limit specifications 5 MU...

Страница 5: ...instrument AC switch in the on position Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter lead in turn to each tuner antenna input exposed terminal scre...

Страница 6: ...ted directly to one conductor of the AC power cord and maybe safety serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side...

Страница 7: ...producing parts heat sinks oxide metal film resistors fusible resistors etc G Check that replaced wires do not contact sharp edged or pointed parts H When a power cord has been replaced check that 5...

Страница 8: ...exposed accessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc is lower than or equal to the specified value in the table below...

Страница 9: ...he Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezers while applying the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat p...

Страница 10: ...one using a sharp pin or wire to which solder will not adhere iron wire When heating the pins use a fine tip soldering iron or a hot air desoldering machine Fig S 1 4 3 Bottom of the flat pack IC is...

Страница 11: ...Fig S 1 6 Note When using a soldering iron care must be taken to ensure that the flat pack IC is not being held by glue When the flat pack IC is removed from the CBA handle it gently because it may b...

Страница 12: ...d to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1 M on the workbench or other surfac...

Страница 13: ...esolder e g 2 S 2 two Screws S 2 2 L 2 two Locking Tabs L 2 5 Refer to the following Reference Notes in the Table Reference Notes in the Table 1 Removal of the Rear Cabinet Remove screws 9 S 1 4 S 2 a...

Страница 14: ...1 S 1 S 1 S 1 S 1 S 1 S 2 S 3 1 Rear Cabinet Control Plate Fig D2 Front Cabinet 3 Main CBA Front Cabinet Control Plate Fig D3 4 Digital CBA Unit S 4 S 4 S 4 S 4 5 CRT 2 CRT CBA Anode Cap Degaussing C...

Страница 15: ...CLN802 CN802 CN691 T571 FLYBACK TRANSFORMER ANODE CAP SCREEN FOCUS WH501A CN571 CN902 DIGITAL CBA UNIT CN901 JK1501 WH501B CN1501 WH301B CN801 CLN801 SP801 WH301A TU11 TUNER AC601 AC CORD SP802 L691...

Страница 16: ...e normal remote control unit Part No NE906UD Remove 3 Screws from the back lid Fig 1 1 2 Add J1 Jumper Wire to the remote control CBA Fig 1 2 How to enter the service mode Service mode 1 Use the servi...

Страница 17: ...S COLOR S CLR becomes 73 C CLR 1 Press MENU button on the service remote control unit Then select COMPONENT COLOR C CLR display 2 Press CH o p buttons on the service remote control unit so that the v...

Страница 18: ...remote control unit display changes Red mode Green mode Blue mode and White mode cyclically 3 Select White mode 4 Turn the power off and on again Main power button on the TV unit 6 SD Check Mode 1 Ent...

Страница 19: ...reen image Symptom of misadjustment If V Position is incorrect vertical height of image on the screen may not be properly displayed Note Use service remote control unit 1 Operate the unit for at least...

Страница 20: ...eps 4 5 and 6 the horizontal line should be pure white if not then attempt the Cut off adjustment again 12 White Balance Adjustment Purpose To mix red green and blue beams correctly for pure white Sym...

Страница 21: ...the base of Q1511 on the CRT CBA with the oscilloscope 4 Press VOL o p button on the service remote control unit and select V Offset Magenta mode 5 Press CH o p buttons so that the waveform of the V...

Страница 22: ...er off and on again Main power button on the TV unit 18 Focus Adjustment Purpose Set the optimum Focus Symptom of Misadjustment If Focus Adjustment is incorrect blurred images are shown on the display...

Страница 23: ...adjustment like the below figure so that the cross hatch pattern becomes flat 21 Convergence Adjustment Purpose To obtain proper convergence of red green and blue beams Symptom of Misadjustment If Con...

Страница 24: ...ion Yoke by carefully inserting the DY Wedges between CRT and Deflection Yoke 22 Yh Yv Xv Adjustment 1 Adjust the volume of Deflection Yoke Yh Yv Xv to get good convergence 23 Software Reset To reset...

Страница 25: ...the Service mode Refer to How to enter the Service mode on page 5 1 4 Press VOL p button on the service remote control unit twice and confirm that OSD indication is 7F FF If needed set it to become 7...

Страница 26: ...T H V BLOCK PROTECT 2 PROTECT 1 PROTECT 3 P ON H KEY IN1 RCV IN RCV401 IC421 MEMORY SCL 6 SDA 5 VOLUME 60 74 8 4 73 1 PROTECT 1 7 CS 78 I2C OPEN IC301 TV MICON VIDEO AUDIO CHROMA DEFLECTION TO IF VIDE...

Страница 27: ...BLOCK DTV Y DTV Cb DTV Cr DTV AUDIO L DTV AUDIO R L CH R CH AA12 Y12 W13 W4 Y3 AA3 AA16 Y17 AA18 AA6 Y7 W7 AA5 W9 AA8 V9 Y6 V11 W3 Y2 AA2 BUFFER BUFFER BUFFER Q257 BUFFER Q256 BUFFER E1 E2 F1 G1 H1 H...

Страница 28: ...VIF AMP VIDEO DET VCO 4 5MHz FILTER EQ AMP SIF TRAP AMP AFT SIF AMP 16 11 13 17 4 7 1 8 TU11 SF11 ANALOG OUT 11 31 SIF 51 50 49 MAIN CBA VIDEO SIGNAL RF IF SIGNAL AUDIO SIGNAL TO AUDIO BLOCK IC301 TV...

Страница 29: ...CANCEL L R FILTER L R SAP SW SAP FILTER I2C DECORDER SAP DEMOD SAP OUT FILTER 29 30 TO IF VIDEO BLOCK TUNER LINE1 LINE2 LINE1 COMP LINE2 L CH R CH 21 27 24 IC451 MTS SAP AUDIO SIGNAL PROCESS AUDIO L...

Страница 30: ...D V501 CRT FOCUS SCREEN GND JK1501 CN1501 WH501B WH501A VIDEO SIGNAL CN571 H OUTPUT H DRIVE B PROTECT 3 DEF B AMP 7 1 6 3 PULSE UP THERMAL PROTECTION 5 WF8 WF7 WF9 WF5 WF4 WF6 WF1 WF2 WF3 RED AMP PROT...

Страница 31: ...CHING Q682 Q901 Q902 5V SWITCHING Q910 Q383 3 3V SWITCHING Q904 5V SWITCHING IC903 1 8V REG IC904 1 2V REG Q903 Q381 Q647 1 8V SWITCHING Q673 Q672 9V REG RESET TO PIN5 OF IC301 GND J371 Q382 Q631 OVER...

Страница 32: ...ings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103 M 1...

Страница 33: ...the drawings were prepared 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of t...

Страница 34: ...8 3 Main 1 5 Schematic Diagram L4903SCM1...

Страница 35: ...8 4 L4903SCM2 Main 2 5 Schematic Diagram...

Страница 36: ...8 5 Main 3 5 Schematic Diagram L4903SCM3...

Страница 37: ...8 6 L4903SCM4 Main 4 5 CRT Schematic Diagram...

Страница 38: ...ircuit 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 For continued protection against risk of fire...

Страница 39: ...ivided into two and shown as IC101 1 2 IC101 2 2 in this Digital Schematic Diagram Section CN101 1 0 2 1 5 3 5 0 4 3 4 5 3 4 6 0 7 2 7 8 3 2 9 1 6 10 0 2 11 0 12 3 3 13 0 14 3 2 15 3 2 CN102 1 0 2 1 2...

Страница 40: ...8 9 Digital 2 3 Schematic Diagram L4903SCD2...

Страница 41: ...pins shown in this diagram is different from that of actual IC101 2 IC101 is divided into two and shown as IC101 1 2 IC101 2 2 in this Digital Schematic Diagram Section CN251 1 3 2 2 0 3 3 2 4 1 1 5...

Страница 42: ...ly 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 Otherwis...

Страница 43: ...V 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 b...

Страница 44: ...8 13 Q1522 Collector WF2 WF1 Q1512 Collector Q1532 Collector WF3 BL4800F01012 2 CRT CBA Top View CRT CBA Bottom View...

Страница 45: ...on Brightness Center Color Center Tint Center Contrast Approx 70 Pin 1 of CN571 Pin 4 of CN571 Pin 3 of WH501A WF6 1DIV 500mV 20 s Pin 31 of IC301 1DIV 500mV 500 s 1DIV 2V 500 s Pin 3 of IC801 Pin 14...

Страница 46: ...5 minutes reconnect to AC outlet and then turn power on Brightness Center Color Center Tint Center Contrast Approx 70 WF18 WF17 WF21 GND GND WF19 WF20 WF1 WF21 Waveforms to be observed at Waveform che...

Страница 47: ...11 SDA D GND DTV S RESET D GND SCL CN102 CN902 5 4 3 2 1 5 4 3 2 1 P ON 3 3V D GND P ON 1 2V NU AL 2 5V 10 9 8 7 6 D IF AGC A GND NU P ON 1 8V A GND 15 14 13 12 11 10 9 8 7 6 20 19 18 17 16 DTV Cr DTV...

Страница 48: ...deo Cr Signal Input 34 Cb1 IN YUV Component Video Cb Signal Input 35 Y1 IN YUV Component Video Y Signal Input 36 1 8V CTRL 1 8V Regulator Control Signal Output 37 C IN YC Chrominance Signal Input 38 Y...

Страница 49: ...11 2 L4805PIN 76 SPOT KILL Counter Measure for Spot 77 SCL Serial Clock 78 I2C OPEN Chip Select 79 SDA Serial Data 80 S SW Detecting S VIDEO Jack Connection Pin No Signal Name Function...

Страница 50: ...L2 L2 L2 L2 L3 L4 L2 L2 L2 A5 A4 B5 B5 B2 B2 B2 L1 B2 B1 Main CBA AC601 L1 L1 L1 L1 L1 B5 B7 B3 B2 B4 B6 CLN802 CLN801 CLN551 V501 L691 CRT CBA Scotch Tape 880 Scotch Tape 880 See Electrical Parts Li...

Страница 51: ...12 2 L4905PEX Packing S5 S1 Tape X1 X4 X3 FRONT X2 S2 S2 S3 S3 S8 S7 S4 Packing tape...

Страница 52: ...1L6250 005 CLN801 WIRE ASSEMBLY SP WIRE WX1L2930 004 CLN802 WIRE ASSEMBLY SP WIRE WX1L2930 003 L1 SCREW ASSEMBLED M3X12 0EM406746A L2 SCREW P TIGHT 4X18 BIND HEAD GBJP4180 L3 SCREW TAPPING M4X14 DBT14...

Страница 53: ...AX F 0 1 F 50V CCK1JZT0F104 C309 CHIP CERAMIC CAP F Z 0 01 F 50V CHD1JZ30F103 C310 CHIP CERAMIC CAP CH J 120pF 50V CHD1JJ3CH121 C311 CERAMIC CAP AX F Z 0 01 F 25V CCA1EZTFZ103 C314 ELECTROLYTIC CAP 0...

Страница 54: ...F 50V CCD1JKS0B681 C666 CERAMIC CAP B K 680pF 50V CCD1JKS0B681 Ref No Description Part No C667 ELECTROLYTIC CAP 1 F 50V M CE1JMASDL1R0 C674 ELECTROLYTIC CAP 1 F 50V M CE1JMASDL1R0 C681 ELECTROLYTIC CA...

Страница 55: ...CORDER AN5832SA E1V QSZBA0TMS003 IC551 IC VERTICAL OUTPUT LA78041 E QSZBA0SSY006 IC601 PHOTOCOUPLER LTV 817C F NPEC0LTV817F IC701 IC SWITCHING TC4052BF ELNF QSZBA0TTS162 Ref No Description Part No IC8...

Страница 56: ...2 2k RRXAJR5Z0222 R379 CHIP RES 1 10W J 2 2k RRXAJR5Z0222 Ref No Description Part No R380 CHIP RES 1 10W J 2 2k RRXAJR5Z0222 R381 CARBON RES 1 4W J 3 3 RCX4JATZ03R3 R382 CARBON RES 1 4W J 10 RCX4JATZ...

Страница 57: ...RCX4JATZ0470 R687 CARBON RES 1 4W J 10 RCX4JATZ0100 R689 CARBON RES 1 4W J 1 RCX4JATZ01R0 Ref No Description Part No R696 CARBON RES 1 4W J 82 RCX4JATZ0820 R701 CARBON RES 1 4W J 220 RCX4JATZ0221 R70...

Страница 58: ...AJR5Z0000 JK701 JACK RCA PCB L AV1 09 023 JXRL010RP047 JK702 JACK RCA PCB L AV1 09 024 JXRL010RP048 JK703 JACK SW RCA PCB L AV1 09 032 JYRL010RP023 JK711 JACK SW RCA PCB L AV3 19 021 JYRL030RP026 JK72...

Страница 59: ...10W J 100 RRXAJR5Z0101 R1530 METAL RESISTOR 3W J 10k RN03103ZU001 R1531 CARBON RES 1 4W J 1 5k RCX4JATZ0152 R1532 CARBON RES 1 4W J 1 5k RCX4JATZ0152 R1534 CHIP RES 1 10W J 100 RRXAJR5Z0101 R1535 CAR...

Страница 60: ...IWT3206 L4903UF 2006 02 24...

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