SERVICE MANUAL 20″ PURE FLAT COLOR TELEVISION EWF2006
IMPORTANT SAFETY NOTICE Proper service and repair is important to the safe, reliable operation of all Funai Equipment. The service procedures recommended by Funai and described in this service manual are effective methods of performing service operations. Some of these service special tools should be used when and as recommended.
SPECIFICATIONS < TUNER > ANT. Input ---------------------- 75 ohm Unbal., F type Reference Level--------------- 20 Vp-p (CRT Green Cathode) Test Input Signal -------------- 400 Hz 30% modulation Description Condition Unit Nominal Limit 1. Intermediate Freq. Picture Sound MHz MHz 45.75 41.25 ----- 2. Peak Picture Sens VHF CATV UHF dBµV dBµV dBµV 15 15 15 30 30 30 --- MHz ±2.0 ±0.7 Condition Unit Nominal Limit 1. Deflection Freq. Horizontal Vertical kHz Hz 15.734 60 ----- 2.
IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced. Safety Precautions for TV Circuit AC line cord directly into a 120 V AC outlet. (Do not use an isolation transformer during this test.
an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source. To confirm that the AC power plug is inserted correctly, with an AC voltmeter, measure between the chassis and a known earth ground. If a voltage reading in excess of 1.0V is obtained, remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground.
3) Align the lengths of the wires to be connected. Insert the wires fully into the connector. of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced. 4) Use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool. Precautions during Servicing L.
Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. 1. Clearance Distance When replacing primary circuit components, confirm specified clearance distance (d) and (d') between soldered terminals, and between terminals and surrounding metallic parts.
STANDARD NOTES FOR SERVICING Circuit Board Indications How to Remove / Install Flat Pack-IC 1. The output pin of the 3 pin Regulator ICs is indicated as shown. 1. Removal With Hot-Air Flat Pack-IC Desoldering Machine: Top View Out 1. Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1) Bottom View In Input 2. For other ICs, pin 1 and every fifth pin are indicated as shown. 5 Pin 1 10 3.
With Soldering Iron: 3. 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 IC when removing it. CBA 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig.
With Iron Wire: 2. Installation 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3) 1. Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily. 2. Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5. 2.
Instructions for Handling Semiconductors Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a grounding band (1 MΩ) that is properly grounded to remove any static electricity that may be charged on the body. 2.
CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart Note: (1) Order of steps in procedure. When reassembling, follow the steps in reverse order. These numbers are also used as the Identification (location) No. of parts in figures. This flowchart indicates the disassembly steps for the cabinet parts, and the CBA in order to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route and dress the cables as they were. (2) Parts to be removed or installed.
(S-1) (S-1) (S-1) [3] Main CBA (S-1) (S-4) (S-2) [1] Rear Cabinet Fig. D1 Fig. D3 [2] CRT CBA (S-1) (S-1) (S-3) Anode Cap (S-2) (S-3) (S-4) (S-1) (S-3) (S-1) (S-1) [1] Rear Cabinet (S-3) [4] CRT Fig. D2 Fig.
TV Cable Wiring Diagram DG691 DEGAUSSING COIL SP802 SP801 MAIN CBA CLN802 CLN801 CN802 CN801 CN691 WH301A TU11 TUNER FLYBACK TRANSFORMER CN571 T571 WH501A TO CRT GROUND AC601 AC CORD WH501B CN1501 FOCUS SCREEN JK1501 WH301B ANODE Fig.
ELECTRICAL ADJUSTMENT INSTRUCTIONS How to enter the service mode: General Note: “CBA” is abbreviation for “Circuit Board Assembly.” Service mode: Note: Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available. 1. Use the service remote control unit. 2. Turn the power on.
2. Initial Setting CLR General 1. Press [MENU] button on the service remote control unit. Then select “COLOR” (CLR) display. 1. Enter the Service mode. (See page 5-1.) 2. Press [CH o / p] buttons on the service remote control unit so that the value of “COLOR” (CLR) becomes 58. 2. Press [VOL p] button on the service remote control unit.
4. H f0 Adjustment 7. SD Check Mode Purpose: To get correct horizontal frequency. 1. Enter the Service mode. (See page 5-1.) Note: Use service remote control unit. 2. Press [1] button on the remote control unit. The unit enter the SD-Check mode. 1. Press [2] button on the service remote control unit and select H-ADJ mode. (By pressing [2] button the display will change from TV AGC to H-ADJ.) 3.
8. H. Position Adjustment 10. V. Position Adjustment Purpose: To obtain correct horizontal position of screen image. Purpose: To obtain correct vertical width of screen image. Symptom of Misadjustment: If H. Position is incorrect, horizontal position of image on the screen may not be properly displayed. Symptom of misadjustment: If V. Position is incorrect, vertical height of image on the screen may not be properly displayed. Test Point Adj. Point Mode Input Test Point Adj.
12. Cut-off Adjustment Cut off by pressing [CH o / p] buttons. Proceed to step 6 when the Green Cut off adjustment is done. Purpose: To adjust the beam current of R, G, B, and screen voltage. 6. Press [3] button. The display will momentarily show “CUT OFF B” (B = Blue). Adjust the Blue cut off by pressing [CH o / p] buttons. When done with steps 4, 5 and 6 the horizontal line should be pure white if not, then attempt the Cut off adjustment again.
3. Turn the power off and on again. (Main power button on the TV unit.) 6. Press [4] button on the service remote control unit for Red adjustment. Press [5] button on the service remote control unit for Blue adjustment. 15. Focus Adjustment 7. In each color mode, Press [CH o / p] buttons to adjust the values of color. Purpose: Set the optimum Focus. 8. Adjusting Red and Blue color so that the temperature becomes 9200K (x: 286 / y: 294)±3%.
3. Fully degauss the unit using an external degaussing coil. Figure 4. Loosen the screw on the Deflection Yoke Clamper and pull the Deflection Yoke back away from the screen. (See Fig. 6) CRT COIL SCREW PURITY RB RB-G RING LOCK 5. Loosen the Ring Lock and adjust the Purity Magnets so that a red field is obtained at the center of the screen. Tighten Ring Lock. (See Fig. 5,6) SCREW DY WEDGE 6. Slowly push the Deflection Yoke toward bell of CRT and set it where a uniform red field is obtained. C.P.
HOW TO INITIALIZE THE TELEVISION To put the program back at the factory-default, initialize the television as the following procedure. 1. Use the service remote control unit. 2. Turn the power on. (Use main power on the TV unit.) 3. Press [SLEEP] button on the service remote control unit to enter 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.
7-1 AFT-IN AGC SCL SDA MAIN CBA TO IF/VIDEO BLOCK TO AUDIO BLOCK CS 7 SCL 6 SDA 5 IC151 (MEMORY) 73 AFT-IN 75 AGC 72 I2C-OPEN 58 SCL 56 SDA IC111 TV MICON/VIDEO /AUDIO/CHROMA /DEFLECTION KEY SWITCH KEY-IN1 66 KEY-IN2 69 74 28 18 40 79 68 67 76 DG-ON-H +5V-CTRL +5V-CTRL2 +8V-CTRL P-ON-H PROTECT-1 PROTECT-2 PROTECT-3 VOLUME 62 A-MUTE 57 INPUT1 80 INPUT0 63 REMOTE SENSOR RCV101 RCV-IN 70 Q131 Q161 DG-ON-H +5V-CTRL +5V-CTRL2 +8V-CTRL PROTECT-1 PROTECT-2 P-ON-H PROTECT-1 PROTECT-2 PROTECT
JK701 VIDEO-IN (FRONT) 1 2 3 5 IF 7 AGC SCL SDA XTAL-IN TU11 WF16 C 7-2 Y JK721 S-VIDEO-IN SAW FILTER SF11 RF/IF SIGNAL WF1 14 16 17 61 S-SW 30 29 24 26 AFT VCO VIDEO DET IC111 TV MICON/VIDEO /AUDIO/CHROMA /DEFLECTION 11 AMP RF AGC VIF AMP OSD 11 4 14 LPF WF2 IF AGC DET AUDIO SIGNAL (IF SIGNAL PROCESS) 58 SCL 56 SDA 32 IC31 VIDEO SIGNAL V-SYNC PROCESS CIRCUIT H-SYNC PROCESS CIRCUIT CHROMA COMB /BASEBAND TINT CHROMINANCE PROCESS CIRCUIT LUMINANCE PROCESS CIRCUIT
7-3 JK703 AUDIO(R)-IN (FRONT) JK702 AUDIO(L)-IN (FRONT) JK711 AUDIO(R)-IN (REAR) JK711 AUDIO(L)-IN (REAR) TO IF/VIDEO BLOCK MAIN CBA SIF 24 27 21 SAP FILTER STEREO FILTER 9 10 SW CTL (R-CH) (L-CH) TUNER REAR FRONT TUNER 4 REAR 2 FRONT 1 11 15 12 SAP DEMOD OFFSET CANCEL 3 13 IC771 (INPUT SELECT) I2C DECORDER VCA IC431 (MTS/SAP AUDIO SIGNAL PROCESS) SAP OUT FILTER L-R FILTER L+R FILTER WF6 8 3 (R-CH) (L-CH) IC801 (AUDIO AMP) (L-R)/SAP SW 75uS DE-EMPH +5V 2 MUTE /STANDB
7-4 TO IF/VIDEO BLOCK WH301A WF7 Q572 H.DRIVE WH301B RED 3 GREEN 4 BLUE 5 FBP-IN ACL PROTECT-1 PROTECT-2 PROTECT-3 TO SYSTEM CONTROL BLOCK TO IF/VIDEO BLOCK PROTECT-4 DEF+B +B H-DRIVE TO POWER SUPPLY BLOCK TO IF/VIDEO BLOCK V-RAMP-F/B RAMP-OUT T572 WF8 H.OUTPUT Q571 MAIN CBA VIDEO SIGNAL 4 5 3 1 WF3 6 9 7 10 8 1 7 Q1511 RED AMP T571 F.B.T.
DG691 DEGAUSSING COIL AC601 AC CORD PS691 CN691 F601 4A/125V 4A/125V 7-5 BRIDGE RECTIFIER D605 - D608 Q602 LIMITER Q601 SWITCHING LINE FILTER L601 HOT CIRCUIT. BE CAREFUL. IC601 ERROR VOLTAGE DET HOT 1 2 4 6 RL601 3 4 T601 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.
SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS Standard Notes Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc.
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE_A,_V FUSE. ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE_A,_V. 2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.
Main 1/4 Schematic Diagram 8-3 L3314SCM1
Main 2/4 Schematic Diagram 8-4 L3314SCM2
Main 3/4 Schematic Diagram 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. 4A/125V CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse.
Main 4/4 & CRT Schematic Diagram 8-6 L3314SCM4
Main CBA Top View 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. 4A/125V CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse.
Main CBA Bottom View 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. 4A/125V CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse.
CRT CBA Top View CRT CBA Bottom View WF14 Q1521 Collector WF4 Q1521 Base WF15 WF3 Q1511 Q1511 Collector Base WF5 Q1531 Base WF13 Q1531 Collector 8-9 BL3700F01013-2
WAVEFORMS WF1 ~ WF16 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: NTSC Color Bar Signal (with 1kHz Audio Signal) INITIAL POSITION: Unplug unit from AC outlet for at least 5 minutes. reconnect to AC outlet and then turn power on. (Brightness---Center Color---Center Tint --- Center Contrast---Approx 70%) GND GND WF1 1DIV: 0.5V 20µs IC 111 Pin 26 WF5 1DIV: 2V 20µs Q 1531 Base WF2 1DIV: 0.5V 20µs IC 111 Pin 14 WF6 1DIV: 0.
WF1 ~ WF16 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: NTSC Color Bar Signal (with 1kHz Audio Signal) INITIAL POSITION: Unplug unit from AC outlet for at least 5 minutes. reconnect to AC outlet and then turn power on.
WIRING DIAGRAM CLN801 SP801 SPEAKER L-CH CLN802 SP802 SPEAKER R-CH CN801 1 SP-L 2 SP-GND CN802 1 SP-R 2 SP-GND ANODE TU11 TUNER UNIT V501 CRT MAIN CBA CN691 1 2 GND CN1501 FOCUS T571 FBT SCREEN WH301B BLUE GREEN RED GND +8V CRT CBA 5 4 3 2 1 WH501B HEATER 3 GND 2 +200V 1 CLN301 CLN501 DY551 D.Y.
IC PIN FUNCTION DESCRIPTIONS IC111 (TV Micro Controller) Pin Signal Name No. Pin Signal Name No. Function Function 38 V RAMP OUT Vertical Ramp Output 1 CNVSS GND 39 V RAMP CAP Vertical Ramp OSC Capacitor 2 NU Not Used 40 3 NU Not Used 4 NU Not Used 5 GND GND 6 VCC ALL +5V 7 NU (GND) 8 FILT Filter 9 HLF Horizontal Filter 10 VHOLD Vertical Hold 11 CVIN Composite Video Signal Input 12 RESET Reset 8.7 VREG OUT DC 8.
Pin Signal Name No.
EXPLODED VIEWS Cabinet SHINWHA TAPE SGT-730 (BLACK) V501-1 L-8 V501-2 Details for DY551 and surrounding parts L-8 SHINWHA TAPE SGT-730 (WHITE) A-4 L-8 DY551 L-10 Scotch Tape #880 L-9 B-5 B-11 B-2 L-8 L-8 CLN801 CLN551 DY551 L-8 L-13 B-6 SP801 B-2 A-2 CRT CBA B-11 B-2 B-5 L-8 DG691 A-1 B-3 L1 B-5 B2 Scotch B-1 Tape #880 B-2 V501 L1 PB4 PB6 PB6 AC601 CLN802 B-5 L-13 B-6 MAIN CBA SP802 A-3 12-1 L3314CEX
Packing S-2 S-4 X-1 X-2 S-6 X-3 S-3 Tape X-5 S-1 FR ON T S-5 Packing tape 12-2 L3314PEX
MECHANICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. 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. No. Description Part No.
ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. 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. Ref. No. C117 NOTES: 1. Parts that are not assigned part numbers (---------) are not available. 2. Tolerance of Capacitors and Resistors are noted with the following symbols. C.....±0.25% D.....±0.5% F.....
Ref. No. Description Ref. No. Part No. Description CCD3DKA0B122 Part No. C566# CERAMIC CAP. BN 1200pF/2KV C571# PP CAP. 0.27µF/250V J CT2E274MS041 CN571# C574# ELECTROLYTIC CAP. 4.7µF/250V M CE2EMASDL4R7 CN691# CONNECTOR PRINT OSU 2P RTB-1.5-2P (LF) J3RTC02JG002 C577 ELECTROLYTIC CAP. 47µF/35V M CE1GMASDL470 CN801 J383C02UG004 C578 FILM CAP.(P) 0.01µF/50V J CMA1JJS00103 CONNECTOR PRINT OSU 008283021200000S+ C580# P.P. CAP 0.0082µF/1.
Ref. No. Description Part No. IC111 IC MICRO COMPUTER/VCD(PB FREE) M61271M8-076FP RF4T QSZAC0RHT085 IC151 IC CAT24WC02WI-TE13 NSZBA0TBG007 IC431 IC MTS DECORDER AN5832SA-E1V QSZBA0TMS003 IC551 VERTICAL OUTPUT IC LA78040A QSBBA0SSY003 IC601# PHOTOCOUPLER LTV-817C-F NPEC0LTV817F IC771 IC SWITCHING TC4052BF(ELNF) QSZBA0TTS162 IC801 IC AN17812A QSZBA0SMS017 Ref. No. COILS Description Part No. R122 CARBON RES. 1/4W J 100 Ω RCX4JATZ0101 R123 CHIP RES.
Ref. No. Description Part No. Ref. No. Description CARBON RES. 1/4W J 3.3 Ω RCX4JATZ03R3 R507 CARBON RES. 1/4W J 3.3 Ω RCX4JATZ03R3 R664 CARBON RES. 1/4W J 1.2k Ω RCX4JATZ0122 R513# METAL OXIDE FILM RES. 2W J 15 Ω RN02150ZU001 R665 CARBON RES. 1/4W J 5.6k Ω RCX4JATZ0562 R663# CARBON RES. 1/4W J 10k Ω Part No. R506 RCX4JATZ0103 R514 CARBON RES. 1/4W J 5.6k Ω RCX4JATZ0562 R667# CARBON RES. 1/4W J 8.2k Ω RCX4JATZ0822 R520 CHIP RES. 1/10W J 3.3k Ω RRXAJB5Z0332 R668# CARBON RES.
Ref. No. Description Part No. Ref. No. SWITCHES Description Part No. CONNECTOR SW101 TACT SWITCH SKQSAB SST0101AL038 SW102 TACT SWITCH SKQSAB SST0101AL038 CN1501 CONNECTOR PIN 1P RT-01N-2.
EWF2006 L3314WQ 2006-04-05
