Sylvania WF319E Service Manual

19" color tv/vcr combination

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SERVICE MANUAL

Main Section

I Specifications

I Preparation for Servicing

I Adjustment Procedures

I Schematic Diagrams

I CBA's

I Exploded Views

I Parts List

19" COLOR TV/VCR COMBINATION

WF319E

When servicing the deck

mechanism, refer to MK12.5 Deck

Mechanism Section.

Deck Mechanism Part No.:

N2226FT

6319CE

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Summary of Contents for Sylvania WF319E

Page 1 When servicing the deck I Specifications mechanism, refer to MK12.5 Deck I Preparation for Servicing Mechanism Section. I Adjustment Procedures I Schematic Diagrams I CBA’s Deck Mechanism Part No.: I Exploded Views N2226FT I Parts List 19" COLOR TV/VCR COMBINATION WF319E 6319CE...
Page 2 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.
Page 3: Table Of Contents
MAIN SECTION 19" COLOR TV/VCR COMBINATION WF319E/6319CE Main Section I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA’s I Exploded Views I Parts List TABLE OF CONTENTS Specifications................1-1-1 Important Safety Precautions.
Page 4: Specifications
SPECIFICATIONS *ˆ M ode---------SP mode unless otherwise specified *Test input terminal <Except Tuner>-------------Video input (1Vp-p) Audio input (-10dB) <Tuner>-----------------------Ant. input (80dBµV) Video: 87.5% Audio: 25kHz dev (1kHz Sin) <DEFLECTION> Description Condition Unit Nominal Limit 1. Over Scan — — 2. Linearity Horizontal —...
Page 5 <AUDIO> All items are measured across 8Ω resistor at speaker output terminal. Description Condition Unit Nominal Limit 1. Audio Output Power (Max.) (R/P) 2. Audio S/N (W/LPF) (R/P) 3. Audio Distortion (W/LPF) (R/P) -2.0 ± 5.0 4. Audio Freq. Response 200Hz (R/P) -2.0 0 ±...
Page 6: Important Safety Precautions
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.
Page 7 ing is performed that involves B+, horizontal de- earth ground. If a voltage reading in excess of 1.0V flection or high voltage. Correct operation of the is obtained, remove and reinsert the AC power X-radiation protection circuits also must be recon- plug in the opposite polarity and again measure firmed each time they are serviced.
Page 8 Precautions during Servicing H. When a power cord has been replaced, check that 5~6 kg of force in any direction will not loosen it. A. Parts identified by the ( # ) symbol are critical for I. Also check areas surrounding repaired locations. safety.
Page 9 Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, Chassis or Secondary Conductor parts and wires have been returned to original posi- tions. Afterwards, perform the following tests and con- Primary Circuit Terminals firm the specified values in order to verify compliance with safety standards.
Page 10: Standard Notes For Servicing
STANDARD NOTES FOR SERVICING Circuit Board Indications How to Read the Values of the Rect- angular Type Chip Components 1. The output pin of the 3 pin Regulator ICs is indi- cated as shown: Example: (a) Resistor Top View Bottom View Input = 473 = 47 [kΩ] (Top View)
Page 11 d. Preheating Leadless capacitor must be preheated before Tweezers installation. (130°C~150°C, for about two minutes.) 1.2. Standard solder Chip a. Soldering Iron Use a pencil-type soldering iron (less than 30 watts). b. Solder Eutectic solder (Tin 63%, Lead 37%) is recom- mended.
Page 12 How to Remove / Install Flat Pack IC 2. Installation a. Using desoldering braid, remove the solder from Caution: the foil of each pin of the Flat Pack - IC on the CBA, 1. The Flat Pack-IC shape may differ by models. Use so you can install a replacement Flat Pack - IC an appropriate hot-air flat pack-IC desoldering more easily.
Page 13 Presolder Sharp Fine Tip Soldering Iron Fig. S-1-4 Flat Pack-IC Fig. S-1-7 Hot Air Blower Iron Wire Soldering Iron To Solid Mounting Point Fig. S-1-5 Example : Pin 1 of the Flat Pack-IC is indicated by a " " mark. Fig.
Page 14 Instructions for Handling Semiconductors Electrostatic breakdown of the semiconductors may occur due to a potential difference caused by electro- static charge during unpacking or repair work. Ground for Human Body Be sure to wear a grounding band (1MΩ) that is prop- erly grounded to remove any static electricity that may be charged on the body.
Page 15: Preparation For Servicing
PREPARATION FOR SERVICING How to Enter the Service Mode Adjustment Mode Purity check mode: Shows Red, Green, Caution: 1 Blue or White cyclically on the screen 1. Optical sensors system are used for Tape Start and each time the "7" key is pressed. End Sensor on this equipment.
Page 16: Cabinet Disassembly Instructions
CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart (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 This flowchart indicates the disassembly steps for the parts in Figures. cabinet parts and the CBA in order to gain access to item(s) to be serviced.
Page 17 [1] REAR CABINET ANT. Fig. 1 [1] REAR CABINET Fig. 2 1-5-2 T7500DC...
Page 18 [2] TRAY CHASSIS [3] DECK UNIT [4] MAIN CBA Fig. 3 1-5-3 T7500DC...
Page 19 ANODE CAP CRT CBA [5] CRT Fig. 4 1-5-4 T7500DC...
Page 20 ANODE CL502A CN505 CL501A CRT CBA FOCUS SCREEN TO SPEAKER MAIN CBA CL403 TO DEGAUSS COIL CN801 CN601 AC CORD CL502B CL401 CL402 CN571 CL201 CL501B CYLINDER CAPSTAN ASSEMBLY MOTOR ACE HEAD FE HEAD DECK UNIT ASSEMBLY Fig. 5 1-5-5 T7500DC...
Page 21: Electrical Adjustment Instructions
ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: How to Set up the Service mode: "CBA" is abbreviation for "Circuit Board Service mode: Assembly." 1. Use the service remote control unit. NOTE: 2. Turn the power on. Electrical adjustments are required after replacing cir- 3.
Page 22 3-1. H Adjustment 3-2. C-Trap Adjustment Purpose: To get correct horizontal position and size of Purpose: To get minimum leakage of the color signal screen image. carrier. Symptom of Misadjustment: Horizontal position and Symptom of Misadjustment: If C-Trap Adjustment is size of screen image may not be properly displayed.
Page 23 3-3. Y DL Time TV/Y DL Time EXT/ Y SW LPF/Black Stretch Off/ C-TRAP Adjustment (Factory mode) Black Stretch CONT/C. Angle "0" Adjustment button button C-TRP 0 C-TRP 1 Purpose: To get minimum leakage of the color signal carrier. button Symptom of Misadjustment: If Y DL Time Adjust- "0"...
Page 24 4. V. Size Adjustment 6. H. Shift Adjustment Purpose: To obtain correct vertical height of screen Purpose: To obtain correct horizontal position and image. size of screen image. Symptom of Misadjustment: If V. Size is incorrect, Symptom of Misadjustment: Horizontal position and vertical height of image on the screen may not be size of screen image may not be properly displayed.
Page 25 8. Sub-Brightness Adjustment Notes: Screen Control FBT --- MAIN CBA F.B.T= Fly Back Transformer Purpose: To get proper brightness. Use the Remote Control Unit Symptom of Misadjustment: If Sub-Brightness is 1. Degauss the CRT and allow CRT to operate for 20 incorrect, proper brightness cannot be obtained by minutes before starting the alignment.
Page 26 9. Focus Adjustment The following 2 adjustments normally are not attempted in the field. They should be done Purpose: Set the optimum Focus. only when replacing the CRT then adjust as a Symptom of Misadjustment: If Focus Adjustment is preparation. incorrect, blurred images are shown on the display.
Page 27 13. Convergence Adjustment 1. Set the unit to the AUX mode which is located before CH2 then input a Dot or crosshatch pattern. Purpose: To obtain proper convergence of red, green 2. Loosen the Ring Lock and align red with blue dots and blue beams.
Page 28: Block Diagrams
BLOCK DIAGRAMS Servo/System Control Block Diagram 1-7-1 T7500BLS...
Page 29 Video Block Diagram 1-7-2 T7500BLV...
Page 30 Audio Block Diagram 1-7-3 T7500BLA...
Page 31 Chroma/Tuner Block Diagram 1-7-4 T7500BLC...
Page 32 CRT/H.V. Block Diagram 1-7-5 T7500BLCRT...
Page 33 Power Supply Block Diagram 1-7-6 T7500BLP...
Page 34: Mechanical Trouble Indicator
MECHANICAL TROUBLE INDICATOR 1, Each Malfunction Indication POWER SAFETY 1) POWER SAFETY 2 If the MONITOR is turned ON right after the Mechani- If P-SAFETY 2 port becomes continuously 2.5V or cal Malfunction occurs or POWER SAFETY is turned less for 120 msec. (4 times 40 msec. interval) when ON, display the following character to show Malfunc- P-ON-H port is ON, the unit shall be assumed to be tion after the EJECT display.
Page 35 Mechanical Malfunction determination 4) Countermeasure for CASSETTE LOADING Mal- function 1) REEL Malfunction detection a) CASSETTE IN operating Malfunction Countermeasure for REEL and CAPSTAN motor If LD-SW does not go to SB position after a lapse rotation malfunction (Except CASSETTE LOAD- of 5 sec.
Page 36: Power Supply Trouble Shooting Guide
Power Supply Trouble Shooting Guide It is highly recommended that a variable isolation Voltage approx. 5Vp-p transformer which can monitor current be used. (Alternatively a variable AC source which monitors current will do). Read directions below before power is added! T=Approx.
Page 37 Repair method #2 Check the primary rectifying diodes (D603-D606) as possible problems. Remove the above mentioned parts and check them. Perform check according to the step 1 and 2 of repair method #1 and check for defects following parts, then if necessary replace with factory originals.
Page 38: Schematic Diagrams / Cba's And Test Points
SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS Standard Notes Note: 1. Do not use the part number shown on these draw- Warning ings for ordering. The correct part number is shown in the parts list, and may be slightly different or Many electrical and mechanical parts in this chassis amended since these drawings were prepared.
Page 39 LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. 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.
Page 40 Main 1/5 Schematic Diagram MAIN 1/5 Ref No. Position IC201 IC202 TRANSISTORS Q205 Q206 CONNECTOR CL201 TEST POINTS TP201 TP202 1-8-3 1-8-4 T7500SCM1...
Page 41 Main 2/5 Schematic Diagram REC Video Signal PB Video Signal PB Audio Signal REC Audio Signal MAIN 2/5 Ref No. Position IC401 IC801 TRANSISTORS Q401 Q402 Q871 Q872 Q873 Q874 Q875 CONNECTORS CL401 CL402 CL403 CN801 TEST POINTS TP301 TP401 TP402 T7500SCM2 1-8-5...
Page 42 Main 3/5 Schematic Diagram PB Video Signal REC Video Signal PB Audio Signal REC Audio Signal MAIN 3/5 Ref No. Position IC001 IC301 TRANSISTOR Q301 TEST POINT TP302 1-8-7 1-8-8 T7500SCM3...
Page 43 VOLTAGE CHART (Power off mode) Main 4/5 Schematic Diagram Ref. No. MAIN 4/5 IC601 11.0 10.0 16.0 CAUTION ! Ref No. Position Ref No. Position Ref. No. CAUTION: FOR CONTINUED PROTECTION AGAINST RISK Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. TRANSISTORS IC602 OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE.
Page 44 Main 5/5 & CRT Schematic Diagram MAIN 5/5 Ref No. Position Ref No. Position TRANSISTORS CC-2 IC551 Q511 TRANSISTORS Q521 CC-2 Q571 AA-2 Q531 CC-2 Q572 CONNECTORS BB-3 Q591 CL501A CONNECTORS CL502A BB-2 BB-3 CL501B CN505 DD-2 CL502B BB-2 CN571 PB Video Signal REC Video Signal 1-8-11...
Page 45 Main CBA Top View Sensor CBA Top View CAUTION ! CAUTION: FOR CONTINUED PROTECTION AGAINST RISK Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE. If Main Fuse (F601) is blown, check to see that all components in the power supply circuit ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE TO SENSOR CBA...
Page 46 Main CBA Bottom View CAUTION ! BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER CAUTION: FOR CONTINUED PROTECTION AGAINST RISK Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE. SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.
Page 47 CRT CBA Top View CRT CBA Bottom View CRT CBA Ref No. Position TRANSISTORS Q511 Q521 Q531 CONNECTORS CL501A CL502A CN505 WF15 WF14 WF16 Q521 Q511 Q531 Collector Collector Collector 1-8-17 1-8-18 BT5500F01011...
Page 48: Waveforms
WAVEFORMS Z13WF 1-9-1...
Page 49: Wiring Diagram
WIRING DIAGRAM T7500WI 1-10-1...
Page 50: System Control Timing Charts
SYSTEM CONTROL TIMING CHARTS Chart 1 EJECT ST-S "OFF" CASS.LOAD LD-FWD 0.2S LD-REV SFT-SW STOP(B) POWER LD-FWD 0.4S LD-FWD 0.2S LD-REV 0.2S LD-FWD 0.5S LD-REV STOP(A) PLAY LD-FWD PLAY LD-FWD RS1(RS2) LD-REV 0.2S LD-FWD FS1(FS2) PLAY PLAY PAUSE STILL PAUSE NOISE CANCEL PAUSE...
Page 51 Chart 2 STOP(A) STOP LD-REV 0.2S LD-FWD 0.2S STOP /EJECT 1.0S LD-FWD 0.5S LD-REV STOP(A) LD-REV 0.2S LD-FWD 0.2S STOP /EJECT LD-REV 1.0S LD-FWD 0.5S LD-REV STOP(A) LD-FWD PAUSE LD-FWD 2.5S Short REV LD-REV 0.2S LD-FWD REC PAUSE REC or PAUSE STOP /EJECT...
Page 52: Ic Pin Function Descriptions
IC PIN FUNCTION DESCRIPTIONS IC201 (TV/VCR Micro Controller) Signal Function Name “H” ≥ 4.5V, “L” ≤ 1.0V Not Used Signal Function REC- Record Protection Tab Name SAFETY Detection LD-SW Loading Switch Input System Reset Signal RESET Not Used (Reset=”L”) Power Supply Failure XC-IN Sub Clock 32 kHz P-SAFETY 2...
Page 53 Signal Signal Function Function Name Name Not Used CTL AMP 97 OUT Control Amp Output YCA-SOUT YCA-SOUT Signal P-ON+5V Power Supply for AMP YCA-CS YCA-CS Signal AL+5V A/D, D/A Standard Voltage YCA-SCLK YCA-SCLK Signal Not Used E2PROM/CHROMA IC 71 OUT SCL Tuner Communication Clock E2PROM/CHROMA IC...
Page 54: Lead Identifications
LEAD IDENTIFICATIONS 2SC5885000RF MID-32A22F TT2140LS-YB11 2SK3563 PT204-6B-12 S: Souce E: Emitter D: Drain C: Collector G: Gate B: Base B C E S D G 2SC1815-GR(TPE2) 2SA1015-GR(TPE2) LA78040A 2SC2120-(O,Y)(TPE2) 2SA1175(F) 2SC3331(T,U) 2SA950(O,Y) KRA103M 2SC1627Y-TPE2 KTC3203(Y) 2SC2482 TPE6 2SC2785(F,H,J) BN1F4M-T KTA1267(GR) KTA1271(Y) KTC3199(GR) E C B...
Page 55: Exploded Views
EXPLODED VIEWS Cabinet SHINWHA TAPE SGT-730 V501-1 (BLACK) V501-2 Details for L551 SHINWHA TAPE SGT-730 and surrounding parts L551 (WHITE) V501-3 SCOTCH TAPE #880 SCOTCH CRT CBA TAPE #880 TB24 CLN551 L551 [ 6319CE ] DG601 TB24 V501 SCOTCH TAPE #880 SP801 W601 SENSOR CBA...
Page 56 Packing TAPE TAPE 1-14-3 T7500PEX...
Page 57: Mechanical Parts List
CONTROL PLATE T7502UC 0EM302078 DRY BATTERY R6P(AR)2P X ICI or XB0M451HU003 A1-3 BRAND PLATE T5300UA:SYMPHONIC 0EM406823 DRY BATTERY(SUNRISE) R6SSE/2S or XB0M451MS002 A1-3 BRAND PLATE T5302UC:SYLVANIA 0EM406914 DRY BATTERY R6P/2S XB0M451T0001 A1-4 CASSETTE DOOR T5300UA 0EM301569 SHEET RETURN STOP L6100UA 0EM407076 A1-4...
Page 58 Table 1 (V501 and L551 Combination) Ref. No. Mark Description Part No. V501-2 WEDGE FT-00110W XV10000T4001 Note 1: Purity and Convergence Adjustments must be V501-3 RUBBER MAGNET 20X10X1.2 XM05000BV001 performed following CRT replacement. Refer to Electri- CRT TYPE E cal Adjustment Instructions. L551# DEFLECTION YOKE LLBY00ZSY007 or LLBY00ZSY007...
Page 59: Electrical Parts List
ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. # have special characteristics important to safety. C207 ELECTROLYTIC CAP .(SS.T) 47µF/25V M H7 CA1E470S6028 Before replacing any of these components, read care- C208 ELECTROLYTIC CAP . 47µF/6.3V M H7 CE0KMAVSL470 fully the product safety notice in this service manual.
Page 60 Ref. No. Description Part No. Ref. No. Description Part No. C322 CHIP CERAMIC CAP . F Z 0.01µF/50V CHD1JZB0F103 C572# P .P .CAP 0.47µF/200 J or CA2D474VC012 C323 CHIP CERAMIC CAP . F Z 2.2µF/10V CHD1AZB0F225 PP CAP . 0.47µF/250V J CT2E474MS041 C324 CHIP CERAMIC CAP .
Page 61 Ref. No. Description Part No. Ref. No. Description Part No. C622 CERAMIC CAP .(AX) CH J 220pF/50V CA1J221TU008 LED SIR-563ST3F Q or QPQQS1R563ST C624 CERAMIC CAP .(AX) B K 0.01µF/50V CA1J103TU011 LED MIE-534A2 NPZZM1E534A2 C625 ELECTROLYTIC CAP . 3.3µF/50V M or CE1JMASDL3R3 D204 LED LTL-4214M1 or...
Page 62 Ref. No. Description Part No. Ref. No. Description Part No. D603# DIODE 1N5397-B or NDLZ001N5397 D640# SWITCHING DIODE 1SS133(T-77) or QDTZ001SS133 RECTIFIER DIODE ERB12-06 QDQZ0ERB1206 SWITCHING DIODE 1N4148 NDTZ001N4148 D604# DIODE 1N5397-B or NDLZ001N5397 D641# ZENER DIODE MTZJT-7736A or QDTA00MTZJ36 RECTIFIER DIODE ERB12-06 QDQZ0ERB1206 ZENER DIODE DZ-36BSAT265...
Page 63 Ref. No. Description Part No. Ref. No. Description Part No. TRANSISTOR KTC3199(GR) NQS10KTC3199 RESISTORS CHIP RES.(1608) 1/10W J 100 Ω Q206 PHOTO TRANSISTOR MID-32A22F or NPWZ1D32A22F R002 RRXAJB5Z0101 CHIP RES.(1608) 1/10W J 100 Ω PHOTO TRANSISTOR PT204-6B-12 NPWZT2046B12 R003 RRXAJB5Z0101 CHIP RES.(1608) 1/10W J 100 Ω...
Page 64 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W J 470 Ω CHIP RES.(1608) 1/10W J 2.2k Ω R248 RRXAJB5Z0471 R426 RRXAJB5Z0222 CARBON RES. 1/4W J 3.3k Ω CARBON RES. 1/4W J 820 Ω R249 RCX4JATZ0332 R427 RCX4JATZ0821 CHIP RES.(1608) 1/10W J 1.5k Ω...
Page 65 Ref. No. Description Part No. Ref. No. Description Part No. CARBON RES. 1/4W J 1.2k Ω CARBON RES. 1/4W J 22k Ω R614 RCX4JATZ0122 R856 RCX4JATZ0223 CARBON RES. 1/4W J 2.2 Ω CHIP RES.(1608) 1/10W J 3.9k Ω R616# RCX4JATZ02R2 R857 RRXAJB5Z0392 CARBON RES.
Page 66 CRT CBA Ref. No. Description Part No. F601# FUSE 4.00A/125V or PAGU20CAG402 Ref. No. Description Part No. FUSE 51MS040L or PAFC20CHV402 CRT CBA ------------ FUSE STC4A125V U/CT or PAGE20CW3402 Consists of the following FUSE 4.00A/125V PAGG20CNG402 CAPACITORS FH601 FUSE HOLDER MSF-015 or XH01Z00LY001 C501 CERAMIC CAP .
Page 67 SENSOR CBA Ref. No. Description Part No. SENSOR CBA 0ESA06170 Consists of the following TRANSISTORS Q201 PHOTO TRANSISTOR MID-32A22F or NPWZ1D32A22F PHOTO TRANSISTOR PT204-6B-12 NPWZT2046B12 Q202 PHOTO TRANSISTOR MID-32A22F or NPWZ1D32A22F PHOTO TRANSISTOR PT204-6B-12 NPWZT2046B12 20040216 1-16-9 T7500EL...
Page 68 WF319E/6319CE T7500UA/T7502UC 2004-02-26...

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Sylvania WF319E Service Manual

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