FUNAI 29D-850 Service Manual
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FUNAI 29D-850 Service Manual

Video cassette recorder
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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
VIDEO CASSETTE RECORDER
When servicing the deck
mechanism, refer to MK14 Deck
Mechanism Section.
Deck Mechanism Part No.:
N25E0FL
29D-850
PAL

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Summary of Contents for FUNAI 29D-850

  • Page 1 When servicing the deck I Specifications mechanism, refer to MK14 Deck I Preparation for Servicing Mechanism Section. I Adjustment Procedures I Schematic Diagrams Deck Mechanism Part No.: I CBA’s I Exploded views N25E0FL I Parts List VIDEO CASSETTE RECORDER 29D-850...

  • Page 2: Table Of Contents

    MAIN SECTION VIDEO CASSETTE RECORDER 29D-850 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 3: Specifications

    SPECIFICATIONS Description Unit Minimum Nominal Maximum Remark 1. Video 1-1. Video Output (PB) Vp-p FL6A 1-2. Video Output (R/P) Vp-p SP Mode, 1-3. Video S/N Y (R/P) W/O Burst 1-4. Video Color S/N AM (R/P) SP Mode 1-5. Video Color S/N PM (R/P) SP Mode 1-6.

  • Page 4: Important Safety Precautions

    IMPORTANT SAFETY PRECAUTIONS Product Safety Notice K. Crimp type wire connector The power transformer uses crimp type connectors Some electrical and mechanical parts have special which connect the power cord and the primary side safety-related characteristics which are often not evi- of the transformer.

  • Page 5: Safety Check After Servicing

    Safety Check after Servicing Chassis or Secondary Conductor Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and wires have been returned to their original Primary Circuit Terminals positions. Afterwards, do the following tests and con- firm the specified values to verify compliance with safety standards.

  • Page 6: Standard Notes For Servicing

    STANDARD NOTES FOR SERVICING Circuit Board Indications Pb (Lead) Free Solder 1. The output pin of the 3 pin Regulator ICs is When soldering, be sure to use the Pb free solder. indicated as shown. How to Remove / Install Flat Pack-IC Top View Bottom View 1.
  • Page 7 3. The flat pack-IC on the CBA is affixed with glue, so With Soldering Iron: be careful not to break or damage the foil of each 1. Using desoldering braid, remove the solder from pin or the solder lands under the IC when all pins of the flat pack-IC.
  • Page 8 2. Installation With Iron Wire: 1. Using desoldering braid, remove the solder from 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder the foil of each pin of the flat pack-IC on the CBA flux which is applied to all pins of the flat pack-IC, so you can install a replacement flat pack-IC more you can remove it easily.

  • Page 9: Instructions For Handling Semi- Conductors

    Instructions for Handling Semi- conductors 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.

  • Page 10: Preparation For Servicing

    PREPARATION FOR SERVICING How to Enter the Service Mode About Optical Sensors Caution: An optical sensor system is used for the Tape Start and End Sensors on this equipment. Carefully read and follow the instructions below. Otherwise the unit may operate erratically. What to do for preparation Insert a tape into the Deck Mechanism Assembly and press the PLAY button.

  • Page 11: Cabinet Disassembly Instructions

    CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart (1): Identification (location) No. of parts in the figures (2): Name of the part This flowchart indicates the disassembly steps to gain (3): Figure Number for reference access to item(s) to be serviced. When reassembling, (4): Identification of parts to be removed, unhooked, follow the steps in reverse order.
  • Page 12 (L-2) [4] Jack CBA (L-2) (S-5) Desolder [2] Front Assembly Fig. D4 (L-1) Fig. D2 (S-2) (S-2) (S-3) (S-2) (S-3) (S-4) [3]VCR Chassis (S-3) Unit (S-2) Fig. D3 1-5-2 HK412DC...
  • Page 13 [7] Cylinder Shield Cylinder Assembly FE Head (S-7) SW507 ACE Head LD-SW Assembly [6] Main CBA [5] Deck [5] Deck Assembly [8] Jack Board Assembly (L-3) Cam Gear Hole Shaft Hole [6] Main CBA LD-SW [6] Main CBA (S-6) Fig. D6 (S-6) TOP VIEW From...

  • Page 14: Electrical Adjustment Instructions

    ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: "CBA" is an abbreviation for Head Switching Position Adjustment "Circuit Board Assembly." Purpose: NOTE: To determine the Head Switching position during 1.Electrical adjustments are required after replacing playback. circuit components and certain mechanical parts. Symptom of Misadjustment: It is important to do these adjustments only after all repairs and replacements have been com- May cause Head Switching noise or vertical jitter...

  • Page 15: How To Initialize The Vcr

    HOW TO INITIALIZE THE VCR To put the program back at the factory-default, initialize the VCR as the following procedure. 1. Make sure that no timer programming is set. If not, reset all timer programming. 2. Turn the power off. 3.

  • Page 16: Function Indicator Symbols

    FUNCTION INDICATOR SYMBOLS Note: The following symbols will appear on the indicator panel to indicate the current mode or operation of the VCR. On-screen modes will also be momentarily displayed on the tv screen when you press the operation buttons. Display panel MODE INDICATOR ACTIVE...
  • Page 17 TV screen Note: OSD for mechanical error will be displayed for 5 sec. after the mechanical error occurs. Cause Indicator Active When reel or capstan mechanism is not “A R” is displayed on a TV screen. (Refer to Fig. 1.) functioning correctly When tape loading mechanism is not “A T”...

  • Page 18: Block Diagrams

    BLOCK DIAGRAMS Servo / System Control Block Diagram HK4F8BLS 1-9-1...
  • Page 19 Video Block Diagram HK4F8BLV 1-9-2...
  • Page 20 Audio Block Diagram HK4F8BLA 1-9-3...
  • Page 21 Hi-Fi Audio Block Diagram HK4F8BLH 1-9-4...
  • Page 22 Power Supply Block Diagram HK4F8BLP 1-9-5...

  • Page 23: Schematic Diagrams / Cba's And Test Points

    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.
  • Page 24 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 (F001) 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.
  • Page 25 Main 1/6 Schematic Diagram 1-10-3 HK4F8SCM1...
  • Page 26 Main 2/6 & Sensor Schematic Diagram FP562 MATRIX CHART 1-10-4 HK4F8SCM2...
  • Page 27 Main 3/6 Schematic Diagram 1-10-5 HK4F8SCM3...
  • Page 28 Main 4/6, Jack & Sub Jack Schematic Diagram 1-10-6 HK4F8SCM4...
  • Page 29 Main 5/6 Schematic Diagram NOTE: CAUTION ! CAUTION ! For continued protection against fire hazard, The voltage for parts in hot circuit is measured using Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. hot GND as a common terminal. If Main Fuse (F001) is blown , check to see that all components in the power supply replace only with the same type fuse.
  • Page 30 Main 6/6 Schematic Diagram 1-10-8 HK4F8SCM6...
  • Page 31 AFV Schematic Diagram HK4F8SCAFV 1-10-9...
  • Page 32 Main CBA Top View CAUTION ! Because a hot chassis ground is present in the power CAUTION ! For continued protection against fire hazard, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. supply circut, an isolation transformer must be used. If Main Fuse (F001) is blown , check to see that all components in the power supply Also, in order to have the ability to increase the input replace only with the same type fuse.
  • Page 33 Main CBA Bottom View CAUTION ! Because a hot chassis ground is present in the power CAUTION ! For continued protection against fire hazard, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. supply circut, an isolation transformer must be used. If Main Fuse (F001) is blown , check to see that all components in the power supply Also, in order to have the ability to increase the input replace only with the same type fuse.
  • Page 34 Jack CBA Top View Jack CBA Bottom View 1-10-12 BHG470F01014C...
  • Page 35 AFV CBA Top View AFV CBA Bottom View BHC400F01093 Sub Jack CBA Top View Sub Jack CBA Bottom View BHG470F01014B 1-10-13...

  • Page 36: Waveforms

    WAVEFORMS NOTE: Input VCR: COLOR BAR SIGNAL (WITH 1KHz AUDIO SIGNAL) (WF1~WF3) TP301 UPPER TP502 LOWER C-PB 10mV x 10 RF-SW 0.5V x 10 UPPER TP502 LOWER V-OUT 0.1V x 10 RF-SW 0.5V x 10 50µs V-OUT E-E 10µs 50mV x 10 U29.5PWF 1-11-1...

  • Page 37: Wiring Diagram

    WIRING DIAGRAM 1-12-1 HK4F8WI...

  • Page 38: Ic Pin Function Descriptions

    IC PIN FUNCTION DESCRIPTIONS Signal Active Function Name Level IC501( SERVO / SYSTEM CONTROL IC ) Not Used “H” ≥ 4.5V, “L” ≤ 1.0V Not Used Signal Active Function Name Level Not Used Input Signal from Pin IN SC2-IN LINE- Audio Mute Control 8 of SCART2 28 OUT...
  • Page 39 Signal Active Signal Active Function Function Name Level Name Level LPF Connected A-MUTE- Audio Mute Control 83 OUT Terminal (Slicer) Signal Not Used Not Used Not Used Not Used Not Used P-DOWN- Power Voltage Down Detector Signal Composite IN C-SYNC PULSE Synchronized Pulse Capstan Motor...

  • Page 40: Lead Identifications

    LEAD IDENTIFICATIONS 2SA1015-GR(TPE2) 2SA1175(F,H,J) PT6958-FN-TP(L) 2SA1015-GR(TE2 F T) 2SC2785(F,H,J) SC16458G 2SA1020(Y) BA1F4M-T PT6958-FN-TP 2SA1020-Y(TE6 F M) BN1F4M-T SC16458 2SC1815-BL(TPE2) BN1L4M-T 2SC1815-BL(TE2 F T) KRA103M-AT/P 2SC1815-GR(TPE2) KRC103M 2SC1815-GR(TE2 F T) KRC103M-AT/P 2SC1815-Y(TPE2) KTA1266(GR) 2SC1815-Y(TE2 F T) KTA-1266-GR-AT/P 2SC2120-Y(TPE2) KTC3199(BL,GR,Y) 2SC2120-Y(TE2 F T) RN2204(TE4 T) 2SC3266-Y(TPE2) RN2204(TE4 F T)

  • Page 41: Exploded Views

    EXPLODED VIEWS Front Panel 1-15-1 HK4F5FEX...
  • Page 42 Cabinet 2L011 2B18 2L011 2L011 See Electrical Parts List for parts with this mark. Some Ref. Numbers are not in sequence. 2L011 JACK CBA 2L011 2L012 2L022 2L042 2L021 2L021 2L021 2L021 2L051 2L022 2L041 2L041 2L021 SUB JACK CBA SENSOR CBA 2L031 AFV CBA...
  • Page 43 Packing X20A X20B X20C X20D X20E X20F Some Ref. Numbers are not in sequence. Unit 1-15-3 HK4F8PEX...

  • Page 44: Mechanical Parts List

    MECHANICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. ! have special characteristics important to safety. X20E! OWNERS MANUAL(GE) HK4F8ED 1VMN21383 Before replacing any of these components, read X20F! OWNERS MANUAL(PO) HK4F8ED 1VMN21380 carefully the product safety notice in this service manual.

  • Page 45: Electrical Parts List

    ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. ! have special characteristics important to safety. C021 CAP ALUMINUM ELECTOLYTIC 470µF/10V M CE1AMASDL471 Before replacing any of these components, read ELECTROLYTIC CAP . 470µF/10V M CE1AMASTL471 carefully the product safety notice in this service C025...
  • Page 46 Ref. No. Description Part No. Ref. No. Description Part No. C325 CHIP CERAMIC CAP .(1608) F Z 0.1µF/50V or CHD1JZ30F104 CHIP CERAMIC CAP . FZ Z 0.1µF/50V CHD1JZ3FZ104 CHIP CERAMIC CAP .(1608) F Z 0.1µF/25V or CHD1EZ30F104 C428 CHIP CERAMIC CAP . CH J 220pF/50V or CHD1JJ3CH221 CHIP CERAMIC CAP .
  • Page 47 Ref. No. Description Part No. Ref. No. Description Part No. CHIP CERAMIC CAP . FZ Z 0.1µF/50V CHD1JZ3FZ104 CHIP CERAMIC CAP . FZ Z 0.22µF/25V CHD1EZ3FZ224 C506 CERAMIC CAP .(AX) B K 100pF/50V CCA1JKT0B101 C756 CHIP CERAMIC CAP .(1608) CH J 470pF/50V or CHD1JJ3CH471 C508 ELECTROLYTIC CAP .
  • Page 48 Ref. No. Description Part No. Ref. No. Description Part No. ZENER DIODE MTZJT-7711A QDTA00MTZJ11 L704 INDUCTOR 15µH-K-26T LLAXKATTU150 D154 ZENER DIODE DZ-11BSAT265 or NDTA00DZ11BS L851 INDUCTOR 1.8µH-K-26T LLAXKATTU1R8 TRANSISTORS ZENER DIODE MTZJT-7711A QDTA00MTZJ11 D155 ZENER DIODE DZ-11BSAT265 or NDTA00DZ11BS Q001! FET 2SK3566 QFWZ02SK3566 ZENER DIODE MTZJT-7711A...
  • Page 49 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W J 33k Ω TRANSISTOR 2SC2785(H) or QQSH02SC2785 R024 RRXAJR5Z0333 CHIP RES.(1608) 1/10W F 3.3k Ω or TRANSISTOR KTC3199(GR) or NQS10KTC3199 R025 RRXAFR5H0332 CHIP RES. 1/10W F 3.3k Ω TRANSISTOR 2SC2785(F) or QQSF02SC2785 RRXAFR5Z0332...
  • Page 50 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W J 220 Ω CHIP RES.(1608) 1/10W J 100k Ω R357 RRXAJR5Z0221 R511 RRXAJR5Z0104 CHIP RES.(1608) 1/10W J 1.5k Ω CHIP RES.(1608) 1/10W J 2.2k Ω R358 RRXAJR5Z0152 R513 RRXAJR5Z0222 CHIP RES.(1608) 1/10W J 1.8k Ω...
  • Page 51 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES.(1608) 1/10W J 1k Ω R853 RRXAJR5Z0102 X502 XTAL 32.768kHz(20PPM) or FXC323LQUA01 MISCELLANEOUS XTAL 32.768kHz(20PPM) FXC323LDS002 SW501 TACT SWITCH KSM0614B or SST0101HH013 SUB JACK CBA TACT SWITCH SKQSAF001A or SST0101AL041 TACT SWITCH TC-1104(H=9.5) SST0101DNG01...
  • Page 52 Ref. No. Description Part No. Ref. No. Description Part No. TRANSISTOR 2SA1015-GR(TPE2) QQS102SA1015 CHIP CERAMIC CAP . CH C 3pF/50V or CHD1JC3CH3R0 RESISTORS CHIP CERAMIC CAP . CJ C 3pF/50V or CHD1JC3CJ3R0 CARBON RES. 1/4W J 820 Ω CHIP CERAMIC CAP . CH D 3pF/50V CHD1JD3CH3R0 R101 RCX4JATZ0821...
  • Page 53 29D-850 HK4F8ED 2005-09-02...

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