Magnavox ZV420MW8 Service Manual
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Magnavox ZV420MW8 Service Manual

Dvd recorder & 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
DVD RECORDER &
ZV420MW8
When servicing the deck
mechanism, refer to MK14 Deck
Mechanism Section.
Deck Mechanism Part No.:
N2460FL

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Summary of Contents for Magnavox ZV420MW8

  • 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 N2460FL I Parts List DVD RECORDER & VIDEO CASSETTE RECORDER ZV420MW8...
  • 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 DVD RECORDER & VIDEO CASSETTE RECORDER ZV420MW8 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 Laser Beam Safety Precautions .

  • Page 4: Specifications

    SPECIFICATIONS < VCR Section > Description Unit Minimum Nominal Maximum Remark 1. Video 1-1. Video Output (PB) Vp-p SP Mode 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.
  • Page 5 < DVD Section > ITEM CONDITIONS UNIT NOMINAL LIMIT 1. VIDEO 1-1. Video Output 75 ohm load Vp-p 1-2. S-Video Output Y (Luminance) 75 ohm load Vp-p 0.714 C (Chrominance) 75 ohm load Vp-p 0.286 1-3. Component Output Y (Luminance) 75 ohm load Vp-p 0.549...

  • Page 6: Laser Beam Safety Precautions

    LASER BEAM SAFETY PRECAUTIONS This DVD player uses a pickup that emits a laser beam. Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin. The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30 cm away from the pickup lens when the diode is turned on.

  • Page 7: Important Safety Precautions

    IMPORTANT SAFETY PRECAUTIONS Product Safety Notice Also check areas surrounding repaired locations. J. Be careful that foreign objects (screws, solder Some electrical and mechanical parts have special droplets, etc.) do not remain inside the set. safety-related characteristics which are often not K.
  • Page 8 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 their original positions. Afterwards, do the following tests and confirm the specified values to verify compliance with safety standards. 1.

  • Page 9: 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 10 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 11 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 12 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 13: 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 14: Cabinet Disassembly Instructions

    CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart REMOVAL This flowchart indicates the disassembly steps to gain REMOVE/*UNHOOK/ LOC. PART Fig. access to item(s) to be serviced. When reassembling, UNLOCK/RELEASE/ Note follow the steps in reverse order. Bend, route, and UNPLUG/DESOLDER dress the cables as they were originally. Dust Cover D4 ---------- Rear Panel 6(S-6), 3(S-7),...
  • Page 15 CAUTION 1: Locking Tabs (L-1) and (L-2) are fragile. Be careful not to break them. 1-1. Release five Locking Tabs (L-1). (S-2) 1-2. Release three Locking Tabs (L-2) [3] Front Bracket 1-3. Disconnect Connector (CN2609), and remove the Front Assembly. (S-2) 2.
  • Page 16 (S-5) (S-5) (S-7) (S-5) CN701 (S-6) CN101 [8] Rear (S-7) Panel Unit [7] Dust (S-7) Cover hook [6] DVD Mechanism & DVD Main Assembly CN1102 Fig. D5 [11] Rear Panel (S-8) Fig. D4 [10] DC Fan Motor [9] Fan Holder Fig.
  • Page 17 (S-9) (S-11) [12] Power Supply (S-11) (S-11) (S-12) (S-9) (S-14) (S-12) (S-10) [13] PCB Holder (S-12) [14] VCR (S-13) Chassis (S-15) Unit CN1101 Fig. D7 Fig. D8 1-6-4 E9E8ADC...
  • Page 18 Cylinder Assembly FE Head ACE Head Assembly SW1512 LD-SW [15] Deck Assembly [16] Power [17] DVD Open SW CBA /Close SW CBA [18] Main CBA [15] Deck Assembly (S-16) Cam Gear [18] Main Hole Lead Shaft with (S-17) blue Desolder stripe Hole LD-SW...
  • Page 19 (S-18) (S-18) (S-18) (S-18) [19] Deck Pedestal [20] Front Bracket R (S-19) Fig. D10 1-6-6 E9E8ADC...
  • Page 20 3. How to Eject Manually Note: When rotating the gear, be careful not to damage the gear. 1. Remove the Top Cover. 2. Remove the Front Assembly. 3. Remove the Front Bracket. 4. Remove the DVD Mechanism & DVD Main CBA Assembly. 5.

  • Page 21: Electrical Adjustment Instructions

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

  • Page 22: How To Initialize The Dvd Recorder & Vcr

    HOW TO INITIALIZE THE DVD RECORDER & VCR To put the program back at the factory-default, initialize the DVD recorder & VCR as the following procedure. < DVD Section > 1. Turn the DVD recorder on. 2. Confirm that no disc is loaded or that the disc tray is open.

  • Page 23: Firmware Renewal Mode

    FIRMWARE RENEWAL MODE 1. Turn the power on and remove the disc on the tray. 4. Select the firmware version pressing arrow buttons, then press [OK]. 2. To put the DVD recorder into version up mode, Fig. d appears on the screen and Fig. e appears press [DVD], [CM SKIP], [6], [5], and [4] buttons on on the VFD.

  • Page 24: Function Indicator Symbols

    FUNCTION INDICATOR SYMBOLS < VCR Section > Note: If a mechanical malfunction occurs, the power is turned off. When the power comes on again after that by pressing [STANDBY-ON] button, an error message is displayed on the TV screen for 5 seconds. Led Mode Indicator Active When reel or capstan mechanism is not...
  • Page 25 < DVD Section > Note: If an error occurs, a message with the error number appears on the screen. Recording Error Error message You cannot record on this disc as Power Calibration Area is full. Error No. Error Message Solution Error Description Priority An error occurs during data reading.
  • Page 26 Error Message Solution Error Description Priority Disc is full. Insert the recordable disc with No available recording space. (No area for new recording) enough recording space. You cannot record on this disc as Power Calibration Area is Insert a new disc. PCA is Full.

  • Page 27: Block Diagrams

    BLOCK DIAGRAMS System Control Block Diagram 1-11-1 E9E8ABLS...
  • Page 28 Servo Block Diagram 1-11-2 E9E8ABLSV...
  • Page 29 Digital Signal Process Block Diagram 1-11-3 E9E8ABLD...
  • Page 30 Video Block Diagram 1-11-4 E9E8ABLV...
  • Page 31 Video Input Select Block Diagram 1-11-5 E9E8ABLVIS...
  • Page 32 Video Output Select Block Diagram 1-11-6 E9E8ABLVOS...
  • Page 33 Audio Block Diagram 1-11-7 E9E8ABLA...
  • Page 34 Audio Input/Output Select Block Diagram 1-11-8 E9E8ABLAS...
  • Page 35 Hi-Fi Audio Block Diagram 1-11-9 E9E8ABLH...
  • Page 36 Power Supply Block Diagram 1-11-10 E9E8ABLP...

  • Page 37: 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 38 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. ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQES D'INCELE N'UTILISER QUE DES FUSIBLE DE MÊME TYPE. RISK OF FIRE-REPLACE FUSE AS MARKED.
  • Page 39 Main 1/7 Schematic Diagram 1-12-3 E9E8ASCM1...
  • Page 40 Main 2/7, Power SW, DVD Open/Close SW & Sensor Schematic Diagram FL1501 MATRIX CHART BS CS DR DTV BS CS 1-12-4 E9E8ASCM2...
  • Page 41 Main 3/7 Schematic Diagram 1-12-5 E9E8ASCM3...
  • Page 42 Main 4/7 Schematic Diagram 1-12-6 E9E8ASCM4...
  • Page 43 Main 5/7 Schematic Diagram 1-12-7 E9E8ASCM5...
  • Page 44 Main 6/7 Schematic Diagram 1-12-8 E9E8ASCM6...
  • Page 45 Main 7/7 Schematic Diagram 1-12-9 E9E8ASCM7...
  • Page 46 Power Supply Schematic Diagram CAUTION ! CAUTION ! NOTE: For continued protection against fire hazard, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. The voltage for parts in hot circuit is measured using replace only with the same type fuse. If Main Fuse (F1001) is blown , check to see that all components in the power supply hot GND as a common terminal.
  • Page 47 Front Jack Schematic Diagram 1-12-11 E9E8ASCFJ...
  • Page 48 DVD Main 1/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC101. IC101 is divided into five and shown as IC101 (1/5) ~ IC101 (5/5) in this DVD Main Schematic Diagram Section. 1-12-12 E9E8ASCD1...
  • Page 49 DVD Main 2/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC101. IC101 is divided into five and shown as IC101 (1/5) ~ IC101 (5/5) in this DVD Main Schematic Diagram Section. 1-12-13 E9E8ASCD2...
  • Page 50 DVD Main 3/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC101. IC101 is divided into five and shown as IC101 (1/5) ~ IC101 (5/5) in this DVD Main Schematic Diagram Section. 1-12-14 E9E8ASCD3...
  • Page 51 DVD Main 4/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC101. IC101 is divided into five and shown as IC101 (1/5) ~ IC101 (5/5) in this DVD Main Schematic Diagram Section. 1-12-15 E9E8ASCD4...
  • Page 52 DVD Main 5/5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC101. IC101 is divided into five and shown as IC101 (1/5) ~ IC101 (5/5) in this DVD Main Schematic Diagram Section. 1-12-16 E9E8ASCD5...
  • Page 53 Main CBA Top View Sensor CBA Top View BHF300F01012A BHF300F01012B TP751 V-OUT TP301 C-PB VR1501 SW-POINT TP513 TP302 RF-SW TP502 S-INH 1-12-17 BE9E8AF01011A...
  • Page 54 Main CBA Bottom View PIN 9 OF PIN 5 OF PIN 3 OF PIN 17 OF PIN 7 OF PIN 2 OF CN2201 CN2201 CN2201 CN2201 CN2201 IC2406 WF10 PIN 3 OF CN2204 1-12-18 BE9E8AF01011A...
  • Page 55 Power Supply CBA Top View CAUTION ! CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. For continued protection against fire hazard, If Main Fuse (F1001) is blown , check to see that all components in the power supply replace only with the same type fuse.
  • Page 56 Power Supply CBA Bottom View CAUTION ! CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. For continued protection against fire hazard, If Main Fuse (F1001) is blown , check to see that all components in the power supply replace only with the same type fuse.
  • Page 57 DVD Open/Close SW CBA DVD Open/Close SW CBA Power SW CBA Top View Power SW CBA Bottom View Bottom View Top View BE9E8AF01011B BE9E8AF01011C Front Jack CBA Top View Front Jack CBA Bottom View BE9E8AF01021B 1-12-21...

  • Page 58: Waveforms

    WAVEFORMS NOTE: Input: COLOR BAR SIGNAL (WITH 1KHz AUDIO SIGNAL) TP751 Pin 9 of CN2201 Pin 17 of CN2201 V-OUT E-E 0.2V 20µs VIDEO-C 0.2V 20µs AUDIO(L)-OUT 0.5ms TP751 UPPER Pin 2 of IC2406 Pin 3 of CN2204 TP302 WF10 LOWER V-OUT 0.5V...

  • Page 59: Wiring Diagram < Vcr Section

    WIRING DIAGRAM < VCR SECTION > 1-14-1 E9E8AWI...

  • Page 60: Wiring Diagram < Dvd Section

    WIRING DIAGRAM < DVD SECTION > E9E8AWID 1-14-2...

  • Page 61: System Control Timing Charts

    SYSTEM CONTROL TIMING CHARTS [ Tray Open ] Push Close Power on button is pressed. Tray insertion INNER-SW open? Tray insertion INNER-SW open? Tray ejection To disc distinction [ Tray Open ] button is pressed. INNER-SW open? SLED moves Tray ejection 1-15-1 R4NTI...
  • Page 62 Parameter V*: Voltage T*: Event timer V0: 2.40 V T1: 0.050 s V1: 4.25 V T2: 2.000 s V2: 2.00 V T3: 0.008 s V3: 2.36 V T4: 0.006 s V4: 4.26 V T5: 0.066 s T6: 1.500 s T7: 0.800 s T8: 0.005 s Tray open Tray ejection direction...
  • Page 63 Push close Threshold level 0.08 V 0.02 s Push Close detection 1-15-3 R4NTI...

  • Page 64: Ic Pin Function Descriptions

    IC PIN FUNCTION DESCRIPTIONS < VCR Section > Signal Function Name IC1501 LM-FWD/ Loading Motor FWD/ REV 26 OUT Output (SYSTEM CONTROL MICROPROCESSOR) 27 OUT P-ON-L Power On Signal to Low Signal Function Not Used Name P-DOWN Power Voltage Down Detector 29 OUT D-REC Delayed Record Signal Signal...
  • Page 65 Signal Signal Function Function Name Name Low Pass Filter Output Signal Tape End Position Detect 53 OUT AFCLPF IN END-S For AFC Signal VIDEO- Not Used 54 OUT Video Mute Control Signal MUTE Video Envelope Comparator IN V-ENV OUTPUT- Output Select (DVD=”L”/ Signal 55 OUT SELECT...
  • Page 66 < DVD Section > IC1571 (VFD DRIVER) Signal Function Name IN CLK Clock Input IN STB Serial Interface Strobe Not Used Not Used Ground Power Supply Segment Output Pull Down Level 16 OUT i Segment Output Grid Output Power Supply Ground IN OSC Oscillator Input...

  • Page 67: Lead Identifications

    LEAD IDENTIFICATIONS KRA103M-AT/P 2SC1815-GR(TE2 F T) PQ070XF01SZH 2SK3563(Q) KRC103M-AT/P KTA-1266-GR-AT/P KTA1267-GR-AT/P KTC3198-GR-AT/P KTC3193-Y-AT/P KTC3203-Y-AT/P KTC3199-(BL,GR)-AT/P KTC3266-GR-AT/P PS2561A-1(W) UTC4558 1: Anode 1 2 3 4 2: Cathode G D S 3: Emitter E C B 4: Collector E C B CD4052BNSR UTC4580E PT6313-S-TP(L) MM1697AJBE...

  • Page 68: Exploded Views

    EXPLODED VIEWS Cabinet 2L011 2L011 See Electrical Parts List 2L071 for parts with this mark. 2L011 2L081 2L062 2B14 2L075 2L033 2L033 2L111 2L081 2B17 2L111 2L111 2L075 W003 2L111 Sensor CBA W004 2B18 2B16 2L043 Power Supply CBA 2L019 2L081 2L043 FM1001...
  • Page 69 Packing Unit Some Ref. Numbers are not in sequence. 1-18-2 E9E8APEX...

  • Page 70: Mechanical Parts List

    MECHANICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. # have special characteristics important to safety. ACCESSORY BAG E5700UD 0VM415576 Before replacing any of these components, read AV CORD 1000/BLACK WPZ0102TM018 carefully the product safety notice in this service X20# OWNERS MANUAL E9E8AUD 1VMN23495...

  • Page 71: Electrical Parts List

    ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. # have special characteristics important to safety. C1312 CHIP CERAMIC CAP .(1608) B K 1µF/10V CHD1AK30B105 Before replacing any of these components, read C1313 ELECTROLYTIC CAP . 1µF/50V M H7 CE1JMAVSL1R0 carefully the product safety notice in this service C1314...
  • Page 72 Ref. No. Description Part No. Ref. No. Description Part No. C1470 CHIP CERAMIC CAP .(1608) B K 0.1µF/50V CHD1JK30B104 C2363 CHIP CERAMIC CAP .(1608) F Z 0.1µF/50V CHD1JZ30F104 C1471 ELECTROLYTIC CAP . 22µF/6.3V M H7 CE0KMAVSL220 C2391 ELECTROLYTIC CAP . 100µF/10V M CE1AMASDL101 C1472 CHIP CERAMIC CAP .(1608) B K 4700pF/50V...
  • Page 73 Ref. No. Description Part No. Ref. No. Description Part No. CONNECTORS L1501 INDUCTOR(100µH K) LAP02TA101K LLAXKATTU101 L1502 RADIAL TYPE CHOKE COIL CW68-470K- LLBD00PKV023 CN1101 FFC CONNECTOR 30PIN IMSA-9615S-30A- JC96J30ER007 841040NP PP-A L1503 INDUCTOR 12µH-K-26T LLAXKATTU120 CN1102 PH CONNECTOR TOP 2P B2B-PH-K-S J3PHC02JG029 (LF)(SN) L1505...
  • Page 74 Ref. No. Description Part No. Ref. No. Description Part No. CARBON RES. 1/4W J 470 Ω CHIP RES. 1/10W J 47k Ω R1109 RCX4JATZ0471 R1484 RRXAJR5Z0473 CARBON RES. 1/4W J 8.2 Ω CHIP RES. 1/10W J 15k Ω R1112 RCX4JATZ08R2 R1485 RRXAJR5Z0153 CARBON RES.
  • Page 75 Ref. No. Description Part No. Ref. No. Description Part No. CHIP RES. 1/10W J 3.3k Ω CHIP RES. 1/10W J 75 Ω R1641 RRXAJR5Z0332 R2751 RRXAJR5Z0750 CHIP RES. 1/10W J 3.3k Ω CARBON RES. 1/6W J 3.9k Ω R1642 RRXAJR5Z0332 R2777 RCX6JATZ0392 CHIP RES.
  • Page 76 PSV CBA Ref. No. Description Part No. CHIP RES.(1608) 1/10W 0 Ω JC1403 RRXAZR5Z0000 Ref. No. Description Part No. CHIP RES.(1608) 1/10W 0 Ω JC1602 RRXAZR5Z0000 PSV CBA 1VSA15643 CHIP RES.(1608) 1/10W 0 Ω JC1603 RRXAZR5Z0000 Consists of the following CHIP RES.(1608) 1/10W 0 Ω...
  • Page 77 Ref. No. Description Part No. Ref. No. Description Part No. D1029 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 RESISTORS CARBON RES. 1/6W J 180k Ω D1030 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 R2800 RCX6JATZ0184 CARBON RES. 1/6W J 180k Ω D1035 SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 R2801 RCX6JATZ0184 CARBON RES.
  • Page 78 Misuse of any trademarks or any other content in this manual is strictly prohibited. Funai shall aggressively enforce its intellectual property rights to the fullest extent of the law. ZV420MW8 E9E8AUD 2007-03-21...

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