Text preview for : TVCR-1404_Service_Manual.pdf part of Funai TVCR 1404 Funai TVCR1404 1 of 4part
Back to : Funai TVCR-1404.part1.rar | Home SERVICE MANUAL Sec. 1: Main Section I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA's I Exploded views I Parts List Sec. 2: Deck Mechanism Section I Standard Maintenance I Alignment for Mechanism I Disassembly/Assembly of Mechanism I Alignment Procedures of Mechanism I Deck Exploded Views I Deck Parts List 14" COLOR TV/VCR COMBINATION TVCR-1404 PAL PAL SECAM This service manual is for TVCR-1404 series. When servicing these models, please confirm a model number on the rating label located on the backside of the cabinet. Refer to the rating label illustration at right (example: TVCR-A1404). model number rating label MAIN SECTION 14" COLOR TV/VCR COMBINATION TVCR-A1404/TVCR-B1404/ TVCR-C1404/TVCR-D1404/ TVCR-A1404T/TVCR-A1404TG Sec. 1: 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1 Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1 Preparation for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1 Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1 Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1 Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1 Mechanical Trouble Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-7 Schematic Diagrams / CBA's and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10-1 System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1 IC Pin Function Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1 Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13-1 Cabinet Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-1 Packing Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-3 Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15-1 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16-1 SPECIFICATIONS *^Mode---------SP mode unless otherwise specified *Test input terminal -------------Video input (1Vp-p) Audio input (-10dB) -----------------------Ant. input (80dBµV) Video: 87.5% mod.(BG/DK), 80.0% mod.(I) Audio: 30kHz div (1kHz Sin) Description 1. Over Scan 2. Linearity Condition -- Horizontal Vertical 3. High Voltage -- Unit % % % kV Nominal 90 -- -- 22 Limit 85/95 ±15 ±10 -- Description 1. Misconvergence Condition Center Corner Side 2. Contrast Control Range 3. Brightness 4. Color Temperature -- APL 100% -- Unit m/m m/m m/m dB ft-L K Nominal -- -- -- -- 55 8500 Limit 0.6 2.0 1.5 6 40 -- Description 1. Horizontal Resolution 2. Jitter (Low) 3. S/N Chroma AM(SP) PM(SP) 4. Wow & Flutter (RMS) Condition (R/P) (R/P) (R/P) (R/P) (R/P) Unit Line µS dB dB % Nominal 230 0.05 38 36 0.25 Limit 200 0.2 33 33 0.5 Description 1. Video S/N 2. Audio S/N (W/LPF) Condition -- -- Unit dB dB Nominal 45 43 Limit 40 40 1-1-1 T6600SP All items are measured across 8 resistor at speaker output terminal. Description 1. Audio Output Power (Max.) 2. Audio S/N (W/LPF) 3. Audio Distortion (W/LPF) 4. Audio Freq. Response (-20dB Ref. 1kHz) Condition (R/P) (R/P) (R/P) 200Hz (R/P) 6kHz (R/P) Unit W dB % dB dB Nominal 1.0 40 3.0 -- -- Limit 0.8 36 5.0 5.0/-10 5.0/-10 Note: Nominal specifications represent the design specifications. All units should be able to approximate these. Some will exceed and some may drop slightly 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. Model TVCR-A1404 TVCR-A1404T TVCR-A1404TG TVCR-B1404 TV Norm PAL-B/G Tuner Sensivity NOM: VHF 46dBµV / UHF 47dBµV MAX: VHF 53dBµV / UHF 56dBµV NOM: VHF 46dBµV / UHF 47dBµV MAX: VHF 53dBµV / UHF 56dBµV NOM: VHF 47dBµV / UHF 47dBµV MAX: VHF 54dBµV / UHF 57dBµV NOM: VHF 46dBµV / UHF 47dBµV MAX: VHF 53dBµV / UHF 56dBµV PAL NOM: VHF 46dBµV / UHF 47dBµV MAX: VHF 53dBµV / UHF 56dBµV TVCR-D1404 PAL/SECAM-BG/DK SECAM NOM: VHF 47dBµV / UHF 47dBµV MAX: VHF 54dBµV / UHF 57dBµV Receptive TV Channels E2 - E12, IA - IH, E21 - E69, S01 - S03, Z+1, Z+2, S1 - S41, gap2 IRA - IRJ, gapC, E21 - E69, S01 - S03, Z+1, Z+2, S1 - S41 F1 - F10, E21 - E69, FB - FQ, S4 - S41 E2 - E12, IA - IH, E21 - E69, S01 - S03, Z+1, Z+2, S1 - S41, gap2 PAL-I SECAM-L/L' TVCR-C1404 PAL-B/G E2 - E12, E21 - E69, S01 - S03, Z+1, Z+2, S1 - S41, gap2, R1 - R12 1-1-2 T6600SP 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 1. Before returning an instrument to the customer, always make a safety check of the entire instrument, including, but not limited to, the following items: a. Be sure that no built-in protective devices are defective and have been defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all protective devices, including but not limited to, nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not operate this instrument or permit it to be operated without all protective devices correctly installed and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage. b. Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1) spacing between the picture tube and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabinet back cover. c. Antenna Cold Check - With the instrument AC plug removed from any AC source, connect an electrical jumper across the two AC plug prongs. Place the 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 screw and, if applicable, to the coaxial connector. If the measured resistance is less than 1.0 megohm or greater than 5.2 megohm, an abnormality exists that must be corrected before the instrument is returned to the customer. Repeat this test with the instrument AC switch in the off position. d. Leakage Current Hot Check - With the instrument completely reassembled, plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leak- age current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410, (50.7). With the instrument AC switch first in the on position and then in the off position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, metal cabinet, screw heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milli-ampere. Reverse the instrument power cord plug in the outlet and repeat the test. READING SHOULD NOT BE ABOVE 0.5 mA DEVICE BEING TESTED LEAKAGE CURRENT TESTER TEST ALL EXPOSED METAL SURFACES ALSO TEST WITH PLUG REVERSED USING AC ADAPTER PLUG AS REQUIRED EARTH GROUND ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES. e. X-Radiation and High Voltage Limits - Because the picture tube is the primary potential source of X-radiation in solid-state TV receivers, it is specially constructed to prohibit X-radiation emissions. For continued X-radiation protection, the replacement picture tube must be the same type as the original. Also, because the picture tube shields and mounting hardware perform an X-radiation protection function, they must be correctly in place. High voltage must be measured each time servic- 1-2-1 T6600SFTY ing is performed that involves B+, horizontal deflection or high voltage. Correct operation of the X-radiation protection circuits also must be reconfirmed each time they are serviced. (X-radiation protection circuits also may be called "horizontal disable" or "hold down.") Read and apply the high voltage limits and, if the chassis is so equipped, the X-radiation protection circuit specifications given on instrument labels and in the Product Safety & X-Radiation Warning note on the service data chassis schematic. High voltage is maintained within specified limits by close tolerance safety-related components/adjustments in the high-voltage circuit. If high voltage exceeds specified limits, check each component specified on the chassis schematic and take corrective action. 2. Read and comply with all caution and safety-related notes on or inside the receiver cabinet, on the receiver chassis, or on the picture tube. 3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and additions, including, but not limited to circuit modifications and the addition of items such as auxiliary audio and/or video output connections, might alter the safety characteristics of this receiver and create a hazard to the user. Any design alterations or additions will void the manufacturer's warranty and may make you, the servicer, responsible for personal injury or property damage resulting therefrom. 4. Picture Tube Implosion Protection Warning The picture tube in this receiver employs integral implosion protection. For continued implosion protection, replace the picture tube only with one of the same type number. Do not remove, install, or otherwise handle the picture tube in any manner without first putting on shatterproof goggles equipped with side shields. People not so equipped must be kept safely away while picture tubes are handled. Keep the picture tube away from your body. Do not handle the picture tube by its neck. Some "in-line" picture tubes are equipped with a permanently attached deflection yoke; because of potential hazard, do not try to remove such "permanently attached" yokes from the picture tube. 5. Hot Chassis Warning a. Some TV receiver chassis are electrically connected 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 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. b. Some TV receiver chassis normally have 85V AC(RMS) between chassis and earth ground regardless of the AC plug polarity. This chassis can be safety-serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source, for both personnel and test equipment protection. c. Some TV receiver chassis have a secondary ground system in addition to the main chassis ground. This secondary ground system is not isolated from the AC power line. The two ground systems are electrically separated by insulation material that must not be defeated or altered. 6. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts-be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high voltage, and e. antenna wiring. Always inspect in all areas for pinched, out of place, or frayed wiring. Check AC power cord for damage. 7. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components, parts, or wiring that meet original specifications. Additionally, determine the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard. 8. Product Safety Notice - Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc.. Parts that have special safety characteristics are identified by a ( ! ) on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The Product's Safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are strictly inspected to confirm with the 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. 1-2-2 T6600SFTY Precautions during Servicing A. Parts identified by the ( ! ) symbol are critical for safety. Replace only with part number specified. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc. C. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads D. Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation Tape 2) PVC tubing 3) Spacers 4) Insulators for transistors. E. When replacing AC primary side components (transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering. F. Observe that the wires do not contact heat producing parts (heatsinks, 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 5~6 kg of force in any direction will not loosen it. I. Also check areas surrounding repaired locations. J. Use care that foreign objects (screws, solder droplets, etc.) do not remain inside the set. K. Crimp type wire connector When replacing the power transformer in sets where the connections between the power cord and power transformer primary lead wires are performed using crimp type connectors, in order to prevent shock hazards, perform carefully and precisely the following steps. Replacement procedure 1) Remove the old connector by cutting the wires at a point close to the connector. Important: Do not re-use a connector (discard it). 2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors. 3) Align the lengths of the wires to be connected. Insert the wires fully into the connector. 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. L. When connecting or disconnecting the VCR connectors, first, disconnect the AC plug from AC supply socket. 1-2-3 T6600SFTY 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. Chassis or Secondary Conductor Primary Circuit Terminals d' d 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. (See Fig. 1) Table 1 : Ratings for selected area AC Line Voltage 220 to 240 V Clearance Distance (d) (d') Fig. 1 3mm(d) 6 mm(d') Exposed Accessible Part Note: This table is unofficial and for reference only. Be sure to confirm the precise values. 2. Leakage Current Test Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). Measuring Method : (Power ON) Insert load Z between B (earth ground, power cord plug prongs) and exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See Fig. 2 and following table. Z AC Voltmeter (High Impedance) B One side of Power Cord Plug Prongs Fig. 2 Table 2: Leakage current ratings for selected areas AC Line Voltage Load Z 2k RES. Connected in parallel 50k RES. Connected in parallel Leakage Current (i) i0.7mA AC Peak i2mA DC i0.7mA AC Peak i2mA DC One side of power cord plug prongs (B) to: RF or Antenna terminals A/V Input, Output 220 to 240 V Note: This table is unofficial and for reference only. Be sure to confirm the precise values. 1-2-4 T6600SFTY STANDARD NOTES FOR SERVICING Circuit Board Indications 1. The output pin of the 3 pin Regulator ICs is indicated as shown: How to Read the Values of the Rectangular Type Chip Components Example: (a) Resistor Top View Out In Input Bottom View 473 = 473 = 47 [k] (b) Capacitor (Top View) 2. For other ICs, pin 1 and every 5th pin is indicated as shown: 5 Pin 1 = Not Shown 10 3. The 1st pin of every pin connector are indicated as shown: (Top View) Caution: Once chip parts (Resistors, Capacitors, Transistors, etc.) are removed, they must not be reused. Always use a new part. Pin 1 Pb (Lead) Free Solder Pb free mark will be found on PCBs used Pb free solder. (Refer to figure.) For PCBs with Pb free mark, be sure to use Pb free solder. For PCBs without Pb free mark, use standard solder. Instructions for Connectors 1. When you connect or disconnect FFC cable (connector), be sure to disconnect the AC cord. 2. FFC cable (connector) should be inserted parallel into the connector, not at an angle. FFC Cable Pb free mark Connector CBA Replacement Procedures for Leadless (Chip) Components The Following Procedures are Recommended for the Replacement of the Leadless Components Used in this Unit. 1. Preparation for replacement 1.1. Pb free solder a. Soldering Iron Use a soldering iron for Pb free solder. b. Solder Be sure to use Pb free solder. c. Soldering time Do not apply heat for more than 4 seconds. d. Preheating Leadless capacitor must be preheated before installation. (130°C~150°C, for about two minutes.) 1-3-1 T6600STA * Be careful to avoid a short circuit. [ CBA= Circuit Board Assembly ] 1.2. Standard solder e. Soldering Iron Use a pencil-type soldering iron (less than 30 watts). f. Solder Eutectic solder (Tin 63%, Lead 37%) is recommended. g. Soldering time Do not apply heat for more than 4 seconds. h. Preheating Leadless capacitor must be preheated before installation. (130°C~150°C, for about two minutes.) Notes: a. Leadless components must not be reused after removal. b. Excessive mechanical stress and rubbing for the component electrode must be avoided. 2. Removing the leadless component Grasp the leadless component body with tweezers and alternately apply heat to both electrodes. When the solder on both electrodes has melted, remove leadless component with a twisting motion. Notes: a. Do not attempt to lift the component off the board until the component is completely disconnected from the board by the twisting action. b. Take care not to break the copper foil on the printed board 3. Installing the leadless component a. Presolder the contact points of the circuit board. b. Press the part downward with tweezers and solder both electrodes as shown below. Note: Do not glue the replacement leadless component to the circuit board. Tweezers Tweezers Soldering Iron Solder Soldering Iron Presolder How to Remove / Install Flat Pack IC Caution: 1. The Flat Pack-IC shape may differ by models. Use an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat PackIC. 2. Do not apply the hot air to the chip parts around the Flat Pack-IC for over 6 seconds as damage may occur to the chip parts. Put Masking Tape around the Flat Pack-IC to protect other parts from damage. (Fig. S-1-2) 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 solder lands under the IC when removing it. 1. Removal With Hot - Air Flat Pack - IC Desoldering Machine: a. Prepare the Hot - Air Flat Pack - IC Desoldering Machine, then apply hot air to Flat Pack - IC (about 5~6 seconds). (Fig. S-1-1) b. Remove the Flat Pack- IC with tweezers while applying the hot air. With Soldering Iron: a. 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) b. Lift each lead of the Flat Pack - IC upward one by 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) With Iron Wire: a. 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) Chip Soldering Iron 1-3-2 T6600STA b. Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5. c. Pull up on the wire as the solder melts so as to lift the IC leads from the CBA contact pads, while heating the pins using a fine tip soldering iron or hot air blower. Note: When using a soldering iron, care must be taken to ensure that the Flat Pack - IC is not being held by glue, or when it is removed from the CBA, it may be damaged if force is used. Flat Pack-IC Desoldering Braid Soldering Iron Fig. S-1-3 2. Installation a. 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. b. The "I" mark on the Flat Pack - IC indicates pin 1 (See Fig. S-1-6). Make sure this mark matches the 1 on the CBA when positioning for installation. Then pre - solder the four corners of the Flat PackIC (See Fig. S-1-7). c. Solder all pins of the Flat Pack - IC. Make sure that none of the pins have solder bridges. Sharp Pin Fine Tip Soldering Iron Fig. S-1-4 Hot Air Blower or Iron Wire Soldering Iron Fig. S-1-1 To Solid Mounting Point Fig. S-1-5 CBA Hot-air Flat Pack-IC Desoldering Machine Example : Masking Tape Tweezers Flat Pack-IC Pin 1 of the Flat Pack-IC is indicated by a " " mark. Fig. S-1-2 Fig. S-1-6 1-3-3 T6600STA Presolder Grounding Band 1M CBA Flat Pack-IC CBA Fig. S-1-7 1M Conductive Sheet or Copper Plate Instructions for Handling Semiconductors Electrostatic breakdown of the semiconductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work. Ground for Human Body Be sure to wear a grounding band (1M) that is properly grounded to remove any static electricity that may be charged on the body. Ground for Work Bench Be sure to place a conductive sheet or copper plate with proper grounding (1M) on the work bench or other surface, where the semiconductors are to be placed. Because the static electricity charge on the clothing will not escape through the body grounding band, be careful to avoid contacting semiconductors to clothing. CBA 1-3-4 T6600STA PREPARATION FOR SERVICING How to Enter the Service Mode Caution: 1 1. Optical sensors system are used for Tape Start and End Sensor on this equipment. Read this page carefully and prepare as described on this page before starting to service; otherwise, the unit may operate unexpectedly. Key 6 7 8 9 Caution: 2 1. The deck mechanism assembly is mounted on the Main CBA directly, and SW211 (REC-SAFETY SW) is mounted on the Main CBA. When deck mechanism assembly is removed from the Main CBA due to servicing, this switch can not be operated automatically. Adjustment Mode No need to use. No need to use. H. Shift adjustment mode: See adjustment instructions page 1-6-4. V.size/V. shift adjustment: See adjustment instructions page 1-6-4. Preparing: 1 1. Cover Q202 (START SENSOR) and Q201 (END SENSOR) with Insulation Tape or enter the service mode to activate Sensor Inhibition automatically. Note: Avoid playing, rewinding or fast forwarding the tape to its beginning or end, because both Tape End Sensors are not active. How to Enter the Service Mode 1. Turn the power on. (Use main power on the TV unit.) 2. Press [STANDBY/ON], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds. When entering the service mode, "4" will display at corners of the screen. 3. During the service mode, electrical adjustment mode can be selected by remote control key. Details are as follows. Key Adjustment Mode Picture adjustment mode: Press the MENU button to change from BRT (Bright), *CNT (Contrast), *COL (Color), *TNT(Tint) and SHP(SHARP). Press PROG+/PROG- key to adjust Initial Value. *Marked items are not necessary to adjust normally. SECAM Black Level adjustment mode: See adjustment instructions page 1-6-3. Cut-Off adjustment mode: See adjustment instructions page 1-6-4. White Balance adjustment mode: See adjustment instructions page 1-6-5. C-Trap adjustment mode: See adjustment instructions page 1-6-3. No need to use. H adjustment mode: See adjustment instructions page 1-6-2. Head switching point adjustment mode (Auto adjustment): See adjustment instructions page 1-6-7. Auto record mode: Perform recording (15 Sec.)-->Stop-->Rewind (Zero return) automatically. Head switching point adjustment mode (Manual adjustment): See adjustment instructions page 1-6-7. Preparing: 2 1. To eject the tape, press the STOP/EJECT button on the unit (or Remote Control). 2. When you want to record during the Service mode, press the Rec button while depressing SW211 (REC-SAFETY SW) on the Main CBA. Q201 (END SENSOR) Q202 (START SENSOR) MENU SW211 (REC-SAFETY SW) MAIN CBA VOL- 0 1 2 3 4 5 1-4-1 T6600PFS CABINET DISASSEMBLY INSTRUCTIONS Comparison Chart of Models and Marks Model TVCR-A1404 TVCR-B1404 TVCR-C1404 TVCR-D1404 TVCR-A1404T TVCR-A1404TG Mark A B C D E F REMOVAL ID/ LOC. No. PART REMOVE/ *UNHOOK/ Fig. UNLOCK/RELEASE/ Note No. UNPLUG/ DESOLDER 3 ---------- [4] 1. Disassembly Flowchart 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. Caution !! When removing the CRT, be sure to discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap. [1] Rear Cabinet [2] Power Unit and Tray Chassis Unit [5] H.V./Power Supply CBA [3] Power Unit [4] Tray Chassis Unit [6] Top Cover [7] Bottom Plate [8] Deck Unit [9] Text CBA [ E,F ] [10] Main CBA [11] CRT Tray Chassis Unit [5] [6] [7] H.V./Power Supply 3 CBA Top Cover Bottom Plate Deck Unit Text CBA --- [ E,F ] 3 3 6(S-3) 5(S-4), CL604 (S-5) 7(S-6), (S-7), (S-8), Desolder *(CN201, CL401, CL402, CL403) (S-9), TE Holder, *CN751, *CN752 4(S-10) 4(S-11) 4 5 6 [8] 3, 5 7 [9] 3, 5 3 4 8 9 10 [10] Main CBA [11] CRT (1) (2) (3) (4) (5) 2. Disassembly Method REMOVAL ID/ LOC. No. PART REMOVE/ *UNHOOK/ Fig. UNLOCK/RELEASE/ Note No. UNPLUG/ DESOLDER 1,2,5 4(S-1), 2(S-2), *CN151 1 (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. (2): Parts to be removed or installed. (3): Fig. No. showing Procedure of Part Location. (4): Identification of part to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. S=Screw, P=Spring, L=Locking Tab, CN=Connector, *=Unhook, Unlock, Release, Unplug, or Desolder 2(S-2) = two Screw (S-2) (5): Refer to the following "Reference Notes in the Table." Reference Notes in the Table 1. Removal of the Rear Cabinet. Remove four screws (S-1) and two screws (S-2). Disconnect connector CN151 and remove the Rear Cabinet. Caution !! Discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap. 2. Removal of the Power Unit and Tray Chassis Unit. Discharge the Anode Lead of the CRT with the CRT Ground before removing the Anode Cap. Disconnect the following: Anode Cap, CN501, CN551, CN601, CRT CBA, and Power Button. 1-5-1 T6600DC [1] Rear Cabinet [2] Power Unit Anode Cap, *CN501, and Tray *CN551, *CN601, 3,4,5 Chassis CRT CBA, Power Unit Knob Power Unit 3,5 *CN502, *CN552, *CN602 2 [3] 3 3. 4. 5. 6. Then pull the Power Unit and Tray Chassis Unit out backward. Removal of the Power Unit. Disconnect connectors CN502, CN552, and CN602. Then slide the Power Unit out. Removal of the H.V./Power Supply CBA. Remove six screws (S-3) and pull up the H.V./ Power Supply CBA. Removal of the Top Cover. Remove five screws (S-4) and CL604, and remove the Top Cover. Removal of the Bottom Plate. Remove a screw (S-5). Then slide the Bottom Plate out front. 7. Removal of the Deck Unit. Remove seven screws (S-6), screw (S-7) and screw (S-8). Then, desolder connectors (CN201, CL401, CL402, CL403) and lift up the Deck Unit. 8. Removal of the Text CBA. [ E,F ] Remove a screw (S-9) and TE Holder, and disconnect connectors CN751 and CN752. Then, lift the Text CBA up. 9. Removal of the Main CBA. Remove four screws (S-10) and pull up the Main CBA. 10.Removal of the CRT. Remove four screws (S-11) and pull the CRT backward. (S-1) [1] REAR CABINET (S-2) (S-2) (S-1) Fig. 1 (S-1) (S-2) (S-1) (S-2) (S-1) (S-1) [1] REAR CABINET Fig. 2 1-5-2 T6600DC (S-4) (S-4) (S-4) [4] Tray Chassis Unit (S-4) (S-6) (S-6) CL604 [6] Top Cover (S-6) (S-6) [ E,F ] (S-9) TE Holder [2] Power Unit and Tray Chassis Unit [8] Deck Unit (S-10) (S-10) (S-10) [9] Text CBA (S-10) [10] Main CBA (S-7) (S-8) Power Button A (S-3) (S-3) (S-3) [5] H.V./Power Supply CBA [7] Bottom Plate A (S-5) [3] Power Unit Fig. 3 1-5-3 T6600DC (S-11) Anode Cap CRT CBA (S-11) (S-11) (S-11) [11] CRT Fig. 4 1-5-4 T6600DC ANODE CRT CRT CBA CN501B SCREEN FOCUS GND CN502 CN501 H.V./POWER SUPPLY CBA CN552 CL501A CN551 CN602 CN601 TO DEGAUSS COIL MAIN CBA CL403 [ E,F ] TEXT CBA CL302A CN901 CL301A CN751 CN752 CN151 CN201 CL603A CAPSTAN MOTOR CL604 TO TOP COVER CL401 CN902 CL402 TO SPEAKER CYLINDER ASSEMBLY FE HEAD ACE HEAD ASSEMBLY DECK UNIT Fig. 5 1-5-5 T6600DC ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: "CBA" is abbreviation for "Circuit Board Assembly." 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. How to set up the option code 1. Enter the Service mode. 2. Press the [STATUS] button on the remote control unit. The option code appears on the display. 3. If needed, input the option code as shown below using number buttons on the remote control unit. Model TVCR-A1404 TVCR-A1404T TVCR-A1404TG TVCR-B1404 TVCR-C1404 TVCR-D1404 Option Code 0130 0178 0242 0128 0129 0131 Test Equipment Required 1. PAL Pattern Generator (Color Bar, Monoscope, Black Raster, White Raster, Sympte) 2. SECAM Pattern Generator (Gray Scale) 3. AC Milli Voltmeter (RMS) 4. Alignment Tape (FL6A), Blank Tape (E180) 5. DC Voltmeter 6. Oscilloscope: Dual-trace with 10:1 probe, V-Range: 0.001~50V/Div, F-Range: DC~AC-60MHz 7. Frequency Counter 8. Plastic Tip Driver 9. RF input (at each broadcasting system) Receiving Channel : VHF Low Input level : 80dBµV 10.Ext.input FRONT VIDEO-IN JACK or REAR SCART JACK 4. To reset the software, press [PAUSE] and [5] buttons on the remote control unit. The option code is changed. How to Set up the Service mode: NOTE: After replacing the IC202 (Memory) or Main CBA, the set value in IC202 (Memory) will be lost. So it is necessary to set up or adjust in the Service mode after its replacement. Service Mode: 1. Turn the power on. (Use main power on the TV unit.) 2. Press [STANDBY/ON], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds. To cancel the service mode, press [STANDBY/ON] button on the remote control. 1-6-1 T6600EA 1. DC 105V (+B) Adjustment Purpose: To obtain correct operation. Symptom of Misadjustment: The picture is dark and unit does not operate correctly. Test point TP503 (+B), TP504 (GND) Tape --Adj. Point Mode RF (or Ext.) Input 2. H Adjustment Purpose: To get correct horizontal position and size of screen image. Symptom of Misadjustment: Horizontal position and size of screen image may not be properly displayed. Test point Adj. Point PROG+/PROGbuttons M. EQ. Mode Ext. Spec. Input --- VR601 Color Bar R590 Tape M. EQ. DC Voltmeter, Plastic Tip Driver Spec. --+105±0.5V DC Frequency Counter 15.625kHz±250Hz Note: R590 --- H.V./Power Supply CBA 1. Connect Frequency Counter to R590. 2. Set the unit to the Ext. mode and no input is necessary. Enter the Service mode. (See page 1-6-1.) 3. Operate the unit for at least 20 minutes. 4. Press [2] button on the remote control unit and select H-Adj mode. 5. Press [PROG+/PROG-] buttons on the remote control unit so that the display will change [0] to [7.] At this moment, choose display [0] to [7] when the Frequency counter display is closest to 15.625kHz±250Hz. 6. Turn the power off and on again. Note: TP503(+B), TP504(GND), VR601 --- H.V./Power Supply CBA 1. Connect the unit to AC Power Outlet. (exact AC230V) 2. Input a color bar signal from RF (or Ext.) input and leave it for at least 20 minutes. 3. Connect DC Volt Meter to TP503(+B) and TP504(GND). 4. Adjust VR601 so that the voltage of TP503(+B) becomes +105±0.5V DC. 1-6-2 T6600EA 3. C-Trap Adjustment Purpose: To get minimum leakage of the color signal carrier. Symptom of Misadjustment: If C-Trap Adjustment is incorrect, stripes will appear on the screen. Test point J349F3 (B-OUT) Tape --Adj. Point PROG+/PROGbuttons M. EQ. Oscilloscope, Pattern Generator Figure Mode Input 4. SECAM Black Level Adjustment Purpose: To set Black Level of the SECAM signal RY/B-Y to Ref. level. Symptom of Misadjustment: If Black Level of the SECAM signal R-Y/B-Y is incorrect, the picture is bluish or reddish in grayscale compared with PAL signal. Test point J361G4 Tape --Adj. Point PROG+/PROGbuttons M. EQ. Pattern Generator, Analog Oscilloscope (unusable Digital Oscilloscope) Mode Input SECAM Gray Scale RF Color Bar (or Ext.) Spec. 200mVp-p Max. Ext. Spec. --- minimum 1. Degauss the CRT and allow CRT to operate for 20 minutes before starting the alignment. 2. Input the SECAM Gray Scale signal from Ext. input. Fig. 1 Note: J349F3 (B-Out)--- Main CBA 1. Connect Oscilloscope to J349F3. 2. Input a color bar signal from RF (or Ext.) input. Enter the Service mode. (See page 1-6-1.) 3. Press [0] button on the remote control unit and select C-TRAP mode. 4. Press [PROG+/PROG-] buttons on the remote control unit so that the carrier leakage B-Out (4.43MHz) value becomes minimum on the oscilloscope. 5. Turn the power off and on again. 3. Enter the service mode. (See page 1-6-1.) 4. To enter the C/D/S mode, press [VOL-] on the remote control unit. 5. To select SBR (SECAM Black Level R-Y), press [6] button on the remote control unit. 6. Press [PROG+/PROG-] buttons to adjust Y signal to the black ref. level. 7. To select SBB (SECAM Black Level B-Y), press [7] button on the remote control unit. 8. Press [PROG+/PROG-] buttons to adjust Y signal to the black ref. level. Y Signal 1H Black REF. Level 1H 5mV/Div (10:1 Prove) 1H Fig. 4 1-6-3 T6600EA 5. V. Size Adjustment Purpose: To obtain correct vertical height of screen image. Symptom of Misadjustment: If V. Size is incorrect, vertical height of image on the screen may not be properly displayed. Test point Screen Tape --Adj. Point PROG+/PROGbuttons M. EQ. Pattern Generator Mode Input 7. H. Shift Adjustment Purpose: To obtain correct horizontal position and size of screen image. Symptom of Misadjustment: Horizontal position and size of screen image may not be properly displayed. Test point RF Monoscope (or Ext.) Spec. 90±5% 1. Enter the Service mode. (See page 1-6-1.) Press [8] button on the remote control unit and select H-P mode. 2. Input monoscope pattern and leave it for at least 20 minutes. 3. Press [PROG+/PROG-] buttons on the remote control unit so that the left and right side of the monoscope pattern are equal to each other. 4. Turn the power off and on again. Screen Tape --Adj. Point PROG+/PROGbuttons M. EQ. Pattern Generator Mode Input RF Monoscope (or Ext.) Spec. 90±5% 1. Enter the Service mode. (See page 1-6-1.) Press [9] button on the remote control unit and select V-S mode. (Press [9] button then display will change to V-P and V-S). 2. Input monoscope pattern and leave it for at least 20 minutes. 3. Press [PROG+/PROG-] buttons on the remote control unit so that the monoscope pattern is 90±5% of display size and the circle is round. 6. V. Shift Adjustment Purpose: To obtain correct vertical position of screen image. Symptom of Misadjustment: If V. position is incorrect, vertical position of image on the screen may not be properly displayed. Test point Screen Tape --Adj. Point PROG+/PROGbuttons M. EQ. Pattern Generator Mode Input 8. Cut-off Adjustment Purpose: To adjust the beam current of R, G, B, and screen voltage. Symptom of Misadjustment: White color may be reddish, greenish or bluish. Test point Screen Tape --Adj. Point Screen-Control, PROG+/PROGbuttons M. EQ. Pattern Generator Mode Input RF Monoscope (or Ext.) Spec. 90±5% RF Black Ras(or Ext.) ter Spec. See Reference Notes below 1. Enter the Service mode. (See page 1-6-1.) Press [9] button on the remote control unit and select V-P mode. (Press [9] button then display will change to V-P and V-S). 2. Input monoscope pattern and leave it for at least 20 minutes. 3. Press [PROG+/PROG-] buttons on the remote control unit so that the top and bottom of the monoscope pattern are equal to each other. Notes: Screen Control (FBT) --- H.V./Power Supply CBA FBT= Fly Back Transformer Use the Remote Control Unit 1. Degauss the CRT and allow CRT to operate for 20 minutes before starting the alignment. 2. Set the screen control to minimum position. Input the Black raster signal from RF (or Ext.) input. 3. Enter the service mode. (See page 1-6-1.) Dimmed horizontal line appears on the CRT. 4. To enter the C/D/S mode, press the [VOL-] button on the remote control unit. 5. To enter the CUT OFF (R) mode, press [1] button on the remote control unit. 6. Turn the screen control up until dimmed horizontal line appears. 1-6-4 T6600EA 7. Press the [PROG+/PROG-] buttons until the horizontal line becomes white. 8. To enter the CUT OFF (G) mode, press [2] button on the remote control unit. 9. Press the [PROG+/PROG-] buttons until the horizontal line becomes white. 10.To enter the CUT OFF (B) mode, press [3] button on the remote control unit. 11.Press the [PROG+/PROG-] buttons until the horizontal line becomes white. 12.Turn the screen control so that the horizontal line adjusted white looks lightly. 13.Turn the power off and on again. 9. White Balance Adjustment Purpose: To mix red, green and blue beams correctly for pure white. Symptom of Misadjustment: White becomes bluish or reddish. Test point Screen Tape --Adj. Point Screen-Control, PROG+/PROGbuttons M. EQ. Pattern Generator, Color analyzer Figure Mode RF (or Ext.) Input White Raster (APL 100%) Spec. See below Color Ajalyzer Fig. 5 Note: Use remote control unit 1. Operate the unit more than 20 minutes. 2. Face the unit to east. Degauss the CRT using Degaussing Coil. 3. Input the White Raster (APL 100%). 4. Set the color analyzer to the CHROMA mode and after zero point calibration, bring the optical receptor to the center on the tube surface (CRT). 5. Enter the Service mode. Press [VOL-] button on the remote control. 6. Press [4] button on the remote control unit for Red adjustment. Press [5] button on the remote control unit for Blue adjustment. 7. In each color mode, Press [PROG+/PROG-] buttons to adjust the values of color. 8. Adjusting Red and Blue color so that the temperature becomes 8500K (x : 290 / y : 300) ±3%. 9. At this time, Re-check that Horizontal line is white. If not, Re-adjust Cut-off Adjustment until the Horizontal Line becomes pure white. 10. Turn off and on again to return to normal mode. Receive APL 100% white signal and Check Chroma temperatures become 8500K (x : 290 / y : 300) ±3%. Note: Confirm that Cut Off Adj. is correct after this adjustment, and attempt Cut Off Adj. if needed. 1-6-5 T6600EA 10. Sub-Brightness Adjustment Purpose: To get proper brightness. Symptom of Misadjustment: If Sub-Brightness is incorrect, proper brightness cannot be obtained by adjusting the Brightness Control. Test point Screen Tape --Adj. Point Mode Input 11. Setting for CONTRAST, COLOR, TINT and SHARP Data Values General 1. Enter the Service mode. (See page 1-6-1) 2. Press [MENU] button. (Each time [MENU] button is pressed, display will change BRT, CNT, COL, TNT, and SHP in that order.) PROG+/PROGRF SYMPTE buttons (or Ext.) M. EQ. Pattern Generator Figure Spec. See below CONTRAST (CNT) 1. Press [MENU] button on the remote control unit. Then select CNT display. 2. Press [PROG+/PROG-] buttons on the remote control unit so that the value of "CONTRAST" (CNT) becomes 83. COLOR (COL) 1. Press [MENU] button on the remote control unit. Then select "COLOR" (COL) display. White Black 2. Press [PROG+/PROG-] buttons on the remote control unit so that the value of "COLOR" (COL) becomes 65. TINT (TNT) 1. Press [MENU] button on the remote control unit. Then select "TINT" (TNT) display. 2. Press [PROG+/PROG-] buttons on the remote control unit so that the value of "TINT" (TNT) becomes 68. SHARP (SHP) 1. Press [MENU] button on the remote control unit. Then select "SHARP" (SHP) display. 2. Press [PROG+/PROG-] buttons on the remote control unit and select "1." ABC This bar (A) just visible Fig. 6 Note: Bar (A) in Fig. 7 --- 0 IRE 1. Enter the service mode. (See page 1-6-1.) Then input SYMPTE signal from RF (or Ext.) input and leave it for at least 20 minutes. 2. Press [MENU] button. (Each time [MENU] button is pressed, display will change BRT, CNT, COL, TNT, and SHP in that order.) Select BRT and press [PROG+/PROG-] buttons so that the bar (A) in Fig. 6 is just visible. 3. Turn the power off and on again. 1-6-6 T6600EA 12. Focus Adjustment Purpose: Set the optimum Focus. Symptom of Misadjustment: If Focus Adjustment is incorrect, blurred images are shown on the display. Test point Screen Tape --Adj. Point Focus Control M. EQ. Pattern Generator Mode Input 13. Head Switching Position Adjustment Purpose: Determine the Head Switching Position during Playback. Symptom of Misadjustment: May cause Head Switching Noise or Vertical Jitter in the picture. Note: Unit reads Head Switching Position automatically and displays it on the screen (Upper Left Corner). RF Monoscope (or Ext.) Spec. See below. Manual Adjustment 1. Enter the service mode. (See page 1-6-1.) 2. Playback the test tape (FL6A). 3. Press the number [5] button on the remote control unit. 4. The Head Switching position will display on the screen; if adjustment is necessary follow step 4. 7.0H (448µs) is preferable. 5. Press [PROG+/PROG-] buttons on the remote control unit if necessary. The value will be changed in 0.5H steps up or down. Adjustable range is up to 9.5H. If the value is beyond adjustable range, the display will change as: Lower out of range: 0.0H Upper out of range: -.-H 6. Turn the power off and on again. Note: Focus VR (FBT) --- H.V./Power Supply CBA FBT= Fly Back Transformer 1. Operate the unit more than 30 minutes. 2. Face the unit to the East and degauss the CRT using a Degaussing Coil. 3. Input the monoscope pattern. 4. Adjust the Focus Control on the FBT to obtain clear picture. Auto Adjustment 1. Load the test tape (FL6A) that have been recorded the Head Switching Position Value. 2. Enter the service mode. 3. Press [3] button on the remote control unit in the tape stop mode. The unit playback and adjust the Head Switching Position automatically. 4. The adjusting report appears on upper left corner of the screen with blueback. In case of adjusting correctly: the Head Switching Position Value recorded in the test tape (FL6A) is indicated with green. In case of adjusting incorrectly: "NG" (red) is indicated with ejecting tape. l TVCR 7.0H NG TVCR Correct Incorrect Fig. 7 1-6-7 T6600EA Comparison Chart of Models & Marks Model AL+5V (DECK ASSEMBLY) Mark A B C TVCR-D1404 TVCR-A1404T TVCR-A1404TG D E F Model Mark MAIN CBA IC201 (SERVO/SYSTEM CONTROL) SW201 D201 S-LED RS201 REMOTE SENSOR 14 REMOTE TVCR-A1404 TVCR-B1404 TVCR-C1404 SW205 KEY SWITCH SW206 SW210 KEY SWITCH KEY-1 7 KEY-2 8 AC HEAD ASSEMBLY 97 CTL AMP-OUT P-ON-H 67 95 CTL(+) P-DOWN-L 85 94 CTL(-) D202 REC WF3 TP001 CTL P-ON-H P-DOWN-L CONTROL HEAD SW212 LD-SW AL+5V D204 STANDBY 9 LD-SW IC202 (MEMORY) CTL(+) CTL(-) REC-LED 23 REC-LED 24 AL+5V CL402 2 1 TO POWER SUPPLY BLOCK SCL 71 SDA 72 I C-OPEN 45 2 6 SCL 5 SDA 7 CS 10 ST-SENS. 4 END-SENS. 80 T-REEL Q202 END-SENS. T-REEL Q201 Q205 SCL SDA 2 I C-OPEN Q204 TIMER+5V RESET 34 RESET Servo/System Control Block Diagram ST-SENS. TO TV BLOCK BLOCK DIAGRAMS 1-7-1 SENSOR CBA (END-SENSOR) SP-MUTE A-MUTE-H EXT-L SCART-H SCART-MUTE CM+12V P-ON+5V(3) 87 C-FG 78 C-F/R 76 C-CONT 81 LD-CONT 77 D-CONT 90 D-PFG 44 20 42 48 29 SENSOR CBA (ST-SENSOR) CYLINDER ASSEMBLY TO AUDIO BLOCK CAPSTAN MOTOR SCL SDA SP-MUTE A-MUTE-H EXT-L SCART-H SCART-MUTE PG SENSOR REC-SAFETY 31 DRUM MOTOR M CAPSTAN MOTOR M SW211 REC SAFETY SCL SDA AL+12V(1) +33V CM+12V P-ON+5V(3) C-FG C-F/R C-CONT FG-GND LD-CONT D-CONT D-PFG M-GND AL+12V(1) VG CN201 1 2 3 4 5 6 7 8 9 10 11 12 LOADING MOTOR M C D-REC-H C-SYNC DV-SYNC V-ENV C-ROTA D-REC-H C-SYNC DV-SYNC V-ENV C-ROTA 47 74 13 6 15 RF-SW 18 TO VIDEO BLOCK RF-SW TRICK-H SECAM-H TRICK-H 33 SECAM-H 32 T6600BLS Comparison Chart of Models & Marks Model TVCR-A1404 TVCR-B1404 TVCR-C1404 A B C D E F REC-VIDEO SIGNAL PB-VIDEO SIGNAL MODE: SP/REC Mark TVCR-D1404 TVCR-A1404T TVCR-A1404TG Model Mark MAIN CBA TO SERVO/SYSTEM CONTROL BLOCK SDA SCL TO TV BLOCK C-VIDEO TU001 Video Block Diagram VIDEO OUT 17 IC401 (VIDEO/AUDIO SIGNAL PROCESS) 65 43 46 68 69 78 79 (DECK ASSEMBLY) Y. DELAY SERIAL DECORDER JK701 V-IN R P CYLINDER ASSEMBLY LUMINANCE SIGNAL PROCESS BYPASS AGC SP HEAD AMP WF4 96 95 93 94 CL401 V(R) V-COM V(L) 1 2 3 VIDEO (R) HEAD VIDEO (L) HEAD JK703 TUNER SCART V-IN 20 V-OUT 19 48 52 54 56 1-7-2 CHARA. INS. CCD 1H DELAY + Y LINE SCART LINE Q703 BUFFER 1/2 C PB/EE MUTE REC FM AGC WF1 TP002 RF-SW TUNER PB/EE MUTE R PR P CHROMINANCE SIGNAL PROCESS D-REC-H 80 RF-SW/C-ROTA 70 DV-SYNC 62 FBC Y/C MIX P D-REC-H RF-SW C-ROTA DV-SYNC TO SERVO/SYSTEM CONTROL BLOCK TU-VIDEO R TO TV BLOCK AGC VXO WF5 TP003 V-OUT VIDEO V-ENV 84 C-SYNC 67 V-ENV C-SYNC TRICK-H SECAM-H C Q401 BUFFER 61 63 58 59 28 29 21 PB-H OUT 44 IC471 (PAL/SECAM DECTECOTR) WF2 TP010 GND X401 4.43MHz TP008 C-PB WF6 28 1 29 17 12 2 16 14 PAL/SECAM DETECTOR T6600BLV PB-AUDIO SIGNAL Mode : SP/REC REC-AUDIO SIGNAL IC301 (VIDEO/AUDIO/CHROMA/DEFLECTION/IF) IC151 (AMP) MAIN CBA TU001 WF7 52 53 TUNER LINE AUDIO OUT 6 ATT 50 7 OUTPUT AMP MUTE 5 1 JK151 HEADPHONE JACK 54 AUDIO MUTE CL801 Audio Block Diagram CN804 SP SP-GND 2 1 SP151 SPEAKER JK702 A-IN IC701 (SW) SP-MUTE TO SERVO/SYSTEM CONTROL BLOCK JK703 IC401 (AUDIO SIGNAL PROCESS) TUNER 13 LINE 17 INV SCART 1 LINE 2 15 A-IN 2 A-OUT 1 SCART 5 LINE 3 4 12 14 SW CTL PB-ON 1-7-3 WF9 EQ AMP 8 9 SP/LP-ON +5V 7 ATT 5 6 Q854 Q855 BIAS OSC Q856 Q853(PB=ON) 1 2 AUTO BIAS 3 100 SWITCHING Q851 D-REC-OFF +5V Q852(PB=ON) ALC DET R P ALC LINE AMP MUTE 12 11 10 9 11 Q701 TP007 N-A-PB SCART-H EXT-L WF8 SCART-MUTE TO SERVO /SYSTEM CONTROL BLOCK REC-ON (DECK ASSEMBLY) AUDIO HEAD AUDIO ERASE HEAD 3 4 6 5 CL402 A-PB/REC A-COM AE-H/FE-H FE-H REC AMP ACE HEAD ASSEMBLY SERIAL DECODER AUDIO HD-SW CONTROL 16 68 69 71 FULL ERASE HEAD CL403 1 FE-H 2 FE-H-GND FE HEAD A-MUTE-H SDA SCL TO SERVO/SYSTEM CONTROL BLOCK T6600BLA E,F Comparison Chart of Models & Marks REC VIDEO SIGNAL IC301 (VIDEO/AUDIO/CHROMA/DEFLECTION/IF) PB VIDEO SIGNAL TVCR-A1404 TVCR-B1404 TVCR-C1404 A B C D E F TVCR-D1404 TVCR-A1404T TVCR-A1404TG Mode : SP/REC Model Mark Model Mark IC901 (TELETEXT DECODER) ADC/ DATA SLICER 40 MAIN CBA DISPLAY TIMING 23 37 36 I2C I/F 50 49 Y-SW-OUT V-SYNC H-SYNC SDA SCL TV Block Diagram TELETEXT DECODER 35 32 33 34 X901 CN901 5 1 2 4 3 CN902 2 4 6 3 OSD-BLK OSD-B OSD-G OSD-R CN751 5 1 2 4 3 CN752 2 4 6 3 OSC/CLOCK GENERATOR 41 42 12MHz OSC 10 11 SERIAL I/F INTELLIGENT MONITORING LINE/PB +5V Q711 TEXT CBA 43 34 36 (NO CONNECTION) INT.MONITOR 2 I C-OPEN SDA CN303 is used for adjustment at factory SCL CN303 1 2 4 5 TUNER LINE/PB Q706 VIDEO TU-VIDEO TO VIDEO BLOCK SYNC SEPARATION TUNER CHROMA TRAP CHROMA BPF CLOCK CONTROL CIRCUIT 32 TO SERVO/SYSTEM CONTROL BLOCK Q702 Q704 I C-OPEN SCL SDA 2 X301 4.43MHz 1-7-4 +5V JK703 IC703 (SW) SLOW-SW 4 8 RAPID-SW 16 15 5 3 OSD-B 7 2 1 14 SW CTL 9 10 11 V-SYNC PROCESS CIRCUIT H-SYNC PROCESS CIRCUIT LUMA SIGNAL PROCESS CIRCUIT PAL DECODER SECAM DECODER BASE BAND 1H DELAY LINE OSD-G 11 OSD-R 15 12 13 17 21 IC201 (SYSTEM CONTROL/OSD) Q710 TO VIDEO BLOCK C-VIDEO 56 C-VIDEO 27 20 28 30 OSD MIX/RBG MATRIX/ BLANKING 16 15 14 WF11 TEXT-L OSD-R OSD-G OSD-B OSD-BLK WF10 82 64 63 62 60 CL301A 2 BLUE 1 GREEN 3 RED TO CRT/H.V. BLOCK CL301B 6 7 31 INV SLOW-SW-IN RGB CONT RAPID-SW-IN WF18 V-SYNC WF17 H-SYNC 68 61 65 59 58 13 12 CL302A 2 1 5 4 3 FBP H-DRIVE ACL V-RAMP-FB V-DRIVE TO CRT/H.V. BLOCK CL302B T6600BLT REC VIDEO SIGNAL PB VIDEO SIGNAL Mode : SP/REC H.V./POWER SUPPLY CBA IC551 (V-DEFLECTION CONTROL) THERMAL PROTECTION 5 WF13 VDRIVE HDRIVE L551 DEFLECTION-YOKE 7 AMP 5 3 4 Q533 1 PUMP UP 1 H.DRIVE WF12 Q551 T552 CN551 6 3 VCC 2 H.OUTPUT CRT/H.V. Block Diagram TO POWER SUPPLY BLOCK T551 F.B.T. HV +B FOCUS VR ANODE DEF+B F S 1 5 3 11 8 10 7 SCREEN VR ANODE FOCUS SCREEN JUNCTION-B CBA 1-7-5 4 TO TV BLOCK CL302A 9 6 CL302B 2 1 5 4 3 CL501A 1 HEATER 3 P-ON+160V CN302 2 1 5 4 3 FBP H-DRIVE ACL V-RAMP-FB V-DRIVE CN552 2 1 5 4 3 CL501B 1 3 JK501 WF14 Q502 GREEN AMP TO TV BLOCK CL301A Q501 RED AMP WF15 FOCUS SCREEN GND V501 CRT BLUE AMP Q503 WF16 CN501 R G B CL301B 3 1 2 CN301 3 1 2 CN502 RED 2 GREEN 4 BLUE 3 JUNCTION-C CBA HEATER GND T6600BLCRT CRT CBA CAUTION ! Fixed voltage 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. CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE T4A/250V FUSE. NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal. HOT TP503 +B TP504 GND T601 6 14 TO CRT/H.V. BLOCK 13 DEF+B +B COLD SW601 POWER D601 - D604 W601 F601 L601 T4A/250V LINE FILTER BRIDGE RECTIFIER CN601 DG601 DEGAUSSING COIL PS602 Power Supply Block Diagram 4 12 Q206 P-DOWN-L (TO PIN85 OF IC201) 11 10 2 9 CM+12V Q602 1-7-6 1 Q605 +8V REG. Q607 Q606 +5V REG. 8 CN602 11 8 7 3 5 12 6 4 AL+33V AL+9V AL+12V(2) AL+12V(1) AL+5V P-ON+8V P-ON-L P-DOWN-L CN603 11 8 7 3 5 12 6 4 4 1 Q608 3 2 VR601 Q604 +B ADJ. FEED BACK SWITCHING TIMER+5V AL+33V AL+9V Q603 LIMITER CL603B 11 8 7 3 5 12 6 4 CL603A 11 8 7 3 5 12 6 4 Q682 AL+12V(2) AL+12V(1) AL+5V P-ON+8V P-ON-H (TO PIN67 OF IC201) JUNCTION-A CBA IC681 +5V REG. P-ON+5V(2) Q684 +5V REG. P-ON+5V(3) IC601 ERROR VOLTAGE DET Q686 +5V REG. P-ON+5V(1) IC301 55 +5.7V REG. P-ON-ON 39 T6600BLP H.V./POWER SUPPLY CBA TOP COVER CL604 MAIN CBA MECHANICAL TROUBLE INDICATOR 1, Each Malfunction Indication If the MONITOR is turned ON right after the Mechanical Malfunction occurs or POWER SAFETY/X-RAY is turned ON, display the following character to show Malfunction after the EJECT display. Immediately preceding Malfunction REEL Malfunction DRUM Malfunction CASSETTE LOADING Malfunction TAPE LOADING Malfunction P-SAFETY 1 P-SAFETY 2 X-RAY Example: If REEL Malfunction EJECT R Display character R D C T 1 2 X POWER SAFETY 1) POWER SAFETY 1 If P-SAFETY 1 port becomes continuously 2.5V or less for 120 msec. (4 times 40 msec. interval) when MONITOR is ON, the unit shall be assumed to be the Power Malfunction 1 and immediately turn OFF the POWER/MONITOR and switch over the Mechanical Malfunction mode with POWER OFF. (To return from this mode shall become possible only by POWER Key as in the case of the Mechanical Malfunction). * However the POWER SAFETY 1 function shall be disabled during 500 msec. right after the MONITOR turns ON. 2) POWER SAFETY 2 If P-SAFETY 2 port becomes continuously 2.5V or less for 120 msec. (4 times 40 msec. interval) when P-ON-H port is ON, the unit shall be assumed to be the Power Malfunction 2 and immediately turn OFF the POWER/MONITOR and switch over the Mechanical Malfunction mode with POWER OFF. (To return from this mode shall become possible only by POWER Key as in the case of the Mechanical Malfunction). * However the POWER SAFETY 2 function shall be disabled during 500 msec. right after the P-ON-H port turns ON. 2, Each Malfunction evaluation method X-RAY protect If X-RAY port becomes continuously 2.5V or more for 120 msec. (4 times 40 msec. interval), the unit shall immediately turn OFF the POWER/MONITOR and switch over to the Mechanical Malfunction mode with POWER OFF. (To return from this mode shall become possible only by POWER Key as in the case of the Mechanical Malfunction). 1-7-7 T6550MTI Mechanical Malfunction determination 1) REEL Malfunction detection Countermeasure for REEL and CAPSTAN motor rotation malfunction (Except CASSETTE LOADING function) After the Malfunction detection with REEL/CAPSTAN sensor, the unit shall switch over to STOP (B) and be REEL Mechanical Malfunction. a) If the T-REEL pulse is not impressed after a lapse of 7 sec. at SP, 14 sec. at LP, or more in the REEL Rotation Mode like PLAY/REC, FS/RS Mode, and the T-REEL or S-REEL pulse is not impress after a lapse of 4 sec. or more in REEL Rotation Mode of FF/REW, it shall be assumed to stop the rotation and switch over to STOP (B) position, then POWER be turned OFF and the unit be REEL Mechanical Malfunction. (T-REEL and S-REEL for the models on S-REEL and only T-REEL for other models) b) If the C-FG pulse is not impressed for a lapse of 1 sec. or more during the CAPSTAN MOTOR rotation, it shall be MOTOR Rotation Malfunction (REEL Malfunction). 2) DRUM Malfunction detection Detect the DRUM rotation at the D-FG input terminal. If the variation of D-FG input level is not detected for a lapse of 1 sec. or more when D-CONT is "H", it shall be assumed to be Rotation Malfunction and be DRUM Malfunction. When detect Drum Malfunction, POWER shall be turned OFF after the unit switches over to STOP (B) Mode. 3) Countermeasure for TAPE LOADING Malfunction Detect the Malfunction with the LOADING Switch. a) TAPE LOADING Malfunction If LD-SW does not go to the established position after a lapse of 7 sec. or more from TAPE LOADING or TAPE UNLOADING start, the LOADING function shall immediately be stopped and POWER be turned OFF, and inform the Timer about the LOADING Mechanical Malfunction. b) LD-SW Position Malfunction at each mode When the unit operates at each mode, even if the LD-SW position changes from the established one in its mode, it keeps the function according to its mode. 4) Countermeasure for CASSETTE LOADING Malfunction a) CASSETTE IN operating Malfunction If LD-SW does not go to SB position after a lapse of 5 sec. or more from the CASSETTE insertion start, the unit starts the CASSETTE OUT operation. After switch over to CASSETTE OUT operation and then a laps of 5 sec. or more from the CASSETTE OUT operation start, if LD-SW does not go to the EJ position or if START Sensor and END Sensor does not turn "ON" at the EJ position, the unit starts again to insert CASSETTE. (However in S-INH state, the START/END Sensor shall be disabled). b) CASSETTE OUT operating Malfunction After a lapse of 5 sec. or more from CASSETTE OUT operation start, if LD-SW does not go to the EJ position or if START Sensor and END Sensor does not turn "ON" at the EJ position, the unit starts to insert CASSETTE. (However in S-INH state, the START/END Sensor shall be disabled). When the unit switches over to CASSETTE insertion at CASSETTE IN or CASSETTE OUT Malfunction, if LD-SW does not go to the SB position after a lapse of 5 sec. or more from CASSETTE insertion start, the function shall immediately be stopped and POWER be turned OFF, and the unit be CASSETTE LOADING Malfunction. c) When POWER is turned ON, if the CL position or GC position cannot be detected after 5 sec. LDREV operation and 5 sec. LD-FWD operation, the function shall immediately be stopped and POWER be turned OFF, and the unit be CASSETTE LOADING Malfunction. d) When POWER is turned ON without CASSETTE (EJ position) and LD-SW is monitored all the time, if the CL or GC position is detected continuously for 1 sec. or more, the POWER shall be turned OFF and the unit be CASSETTE LOADING Malfunction. Countermeasure for Mechanical Malfunction If the unit detects Mechanical Malfunction, turn the POWER OFF. If the unit is Mechanical Malfunction, Key input except POWER key shall be disabled and CASSETTE insertion disabled. When POWER Key is entered, the POWER is turned ON and the unit switches over the EJECT Mode. (Return with POWER ON) 1-7-8 T6550MTI SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS Standard Notes Warning 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. Replacement parts that have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by the mark " ! " in the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards. Note: 1. Do not use the part number shown on these drawings 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=106). 3. Resistor wattages are 1/4W or 1/6W unless otherwise specified. 4. All capacitance values are indicated in µF (P=10-6µF). 5. All voltages are DC voltages unless otherwise specified. Capacitor Temperature Markings Mark (B) (F) (SR) (Z) Capacity change rate Standard temperature 20°C 20°C 20°C 20°C Temperature range -25~+85°C -25~+85°C -25~+85°C -10~+70°C ±10% +30 -80% ±15% +30 -80% Capacitors and transistors are represented by the following symbols. CBA Symbols (Top View) (Bottom View) + Electrolytic Capacitor (Bottom View) Transistor or Digital Transistor E C B (Top View) Schematic Diagram Symbols NPN Transistor PNP Transistor ECB (Top View) Digital Transistor ECB (Top View) (Top View) NPN Digital Transistor ECB ECB PNP Digital Transistor 1-8-1 SC_1 LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. 2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown, first 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. 3. Note: (1) Do not use the part number shown on the drawings for ordering. The correct part number is shown in the parts list, and may be slightly different or amended since 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 the service manual. 4. Wire Connectors (1) Prefix symbol "CN" means "connector" (can disconnect and reconnect). (2) Prefix symbol "CL" means "wire-solder holes of the PCB" (wire is soldered directly). 5. Mode: SP/REC 6. Voltage indications for PLAY and REC modes on the schematics are as shown below: 1 5.0 2 3 5.0 (2.5) PLAY mode REC mode Unit: Volts The same voltage for both PLAY & REC modes 7. How to read converged lines Indicates that the voltage is not consistent here. 1-D3 3 AREA D3 Distinction Area 2 Line Number (1 to 3 digits) 1 Examples: 1. "1-D3" means that line number "1" goes to area "D3". 2. "1-B1" means that line number "1" goes to area "B1". 1-B1 AREA B1 1-D3 A B C D 8. Test Point Information : Indicates a test point with a jumper wire across a hole in the PCB. : Used to indicate a test point with a component lead on foil side. : Used to indicate a test point with no test pin. : Used to indicate a test point with a test pin. 1-8-2 SC_2 Main 1/5 Schematic Diagram Comparison Chart of Models and Marks MODEL TVCR-A1404 TVCR-B1404 TVCR-C1404 MARK A B C MODEL TVCR-D1404 TVCR-A1404T TVCR-A1404TG MARK D E F 1-8-3 1-8-4 T6600SCM1 Main 2/5 Schematic Diagram 1-8-5 1-8-6 T6600SCM2 Main 3/5 Schematic Diagram Comparison Chart of Models and Marks MODEL TVCR-A1404 TVCR-B1404 TVCR-C1404 MARK A B C MODEL TVCR-D1404 TVCR-A1404T TVCR-A1404TG MARK D E F 1-8-7 1-8-8 T6600SCM3 Main 4/5 Schematic Diagram Comparison Chart of Models and Marks MODEL TVCR-A1404 TVCR-B1404 TVCR-C1404 MARK A B C