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Sharp DV-NC150U Service Manual

Vcr/dvd combination.
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The region number for this
1
VCR/DVD is 1.
1. SPECIFICATIONS ................................................................................................................................................ 1-1-1
2. LASER BEAM SAFETY PRECAUTIONS ............................................................................................................. 1-2-1
3. IMPORTANT SAFEGUARDS AND PRECAUTIONS ............................................................................................ 1-3-1
4. STANDARD NOTES FOR SERVICING ................................................................................................................ 1-4-1
5. PREPARATION FOR SERVICING ....................................................................................................................... 1-5-1
6. OPERATING CONTROLS AND FUNCTIONS ...................................................................................................... 1-6-1
7. CABINET DISASSEMBLY INSTRUCTIONS ........................................................................................................ 1-7-1
8. ELECTRICAL ADJUSTMENT INSTRUCTIONS ................................................................................................... 1-8-1
9. FIRMWARE RENEWAL MODE (FIRMWARE VERSION UP) .............................................................................. 1-9-1
10. TROUBLESHOOTING ........................................................................................................................................ 1-10-1
11. BLOCK DIAGRAMS ............................................................................................................................................ 1-11-1
12. FUNCTION INDICATOR SYMBOLS ................................................................................................................... 1-11-9
13. SCHEMATIC DIAGRAMS/ CBA'S AND TEST POINTS ..................................................................................... 1-12-1
14. WAVEFORMS & VOLTAGE CHART .................................................................................................................. 1-13-1
15. WIRING DIAGRAM ............................................................................................................................................. 1-14-1
16. SYSTEM CONTROL TIMING CHARTS .............................................................................................................. 1-15-1
17. IC PIN FUNCTION DESCRIPTIONS .................................................................................................................. 1-16-1
18. LEAD IDENTIFICATIONS ................................................................................................................................... 1-17-1
19. EXPLODED VIEWS ............................................................................................................................................ 1-18-1
20. MECHANICAL PARTS LIST ............................................................................................................................... N/A
21. ELECTRICAL PARTS LIST ................................................................................................................................ N/A
1. STANDARD MAINTENANCE ............................................................................................................................... 2-1-1
2. SERVICE FIXTURE AND TOOLS ........................................................................................................................ 2-2-1
3. MECHANICAL ALIGNMENT PROCEDURES ...................................................................................................... 2-3-1
4. DISASSEMBLY / ASSEMBLY PROCEDURES OF DECK MECHANISM ............................................................ 2-4-1
5. ALIGNMENT PROCEDURES OF MECHANISM .................................................................................................. 2-5-1
6. DECK EXPLODED VIEWS ................................................................................................................................... 2-6-1
7. DECK PARTS LIST ............................................................................................................................................... N/A
SHARP CORPORATION
SERVICE MANUAL
VCR/DVD COMBINATION
MODEL
CONTENTS
1
DV-NC150U
In the interests of user-safety (Required by safety
regulations in some countries) the set should be
restored to its original condition and only parts
identical to those specified be used.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
DV-NC150U
S74W9DV-NC150

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   Summary of Contents for Sharp DV-NC150U

  • Page 1: Table Of Contents

    DV-NC150U SERVICE MANUAL S74W9DV-NC150 VCR/DVD COMBINATION DV-NC150U MODEL The region number for this VCR/DVD is 1. In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used.
  • Page 2: Main Section

    MAIN SECTION VCR/DVD COMBINATION DV-NC150U TABLE OF CONTENTS 1. SPECIFICATIONS ..................1-1-1 2. LASER BEAM SAFETY PRECAUTIONS ............1-2-1 3. IMPORTANT SAFEGUARDS AND PRECAUTIONS ........1-3-1 4. STANDARD NOTES FOR SERVICING ............1-4-1 5. PREPARATION FOR SERVICING ..............1-5-1 6. OPERATING CONTROLS AND FUNCTIONS ..........1-6-1 7.
  • Page 3: Specifications

    SPECIFICATIONS < VCR Section > TAPE SPEED: SP Description Unit Minimum Nominal Maximum Remark 1. Video 1-1. Video Output ( PB ) Vp-p 9HSFL8A 1-2. Video Output ( R/P ) Vp-p 1-3. Video S/N Y ( R/P ) W/O Burst 1-4.
  • Page 4 < DVD Section > ITEM CONDITIONS UNIT NOMINAL LIMIT 75 Ω ±0.1 1 Video Output 2 Coaxial Digital Out mVpp 3 Audio (PCM) 3-1. Output Level 1 kHz 0 dB 3-2. S/N 3-3. Freq. Response ±0.5 fs=48 kHz 20 ~ 22 kHz ±0.5 fs=44.1 kHz 20 ~ 22 kHz 3-4.
  • Page 5: 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 30cm away from the pickup lens when the diode is turned on.
  • Page 6: Important Safeguards And Precautions

    IMPORTANT SAFEGUARDS AND PRECAUTIONS 1. IMPORTANT SERVICE NOTES BEFORE RETURNING THE DVD VIDEO PLAYER Reverse the AC plug on the set and repeat AC voltage measurements for each exposed part. Any reading of Before returning the DVD video player to the user, 0.45V rms (this corresponds to 0.3mA rms AC.) or more is excessive and indicates a potential shock perform the following safety checks.
  • Page 7 WARNING :TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO WET LOCATIONS. CAUTION CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol mark means following. For continued protection against fire CAUTION: TO REDUCE THE RISK OF ELECTRIC hazard, replace only with same type SHOCK.
  • Page 8: Standard Notes For Servicing

    STANDARD NOTES FOR SERVICING NOTE: CBA AND PWB MEANS PRINTED WIRING Using lead-free wire solder BOARD. When fixing the PWB soldered with the lead-free solder, Circuit Board Indications apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to a.
  • Page 9 Soldering Iron Fig. S-1-3 (2) 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 Fig. S-1-1 tip soldering iron or a hot air desoldering machine.
  • Page 10 (4) Bottom of the flat pack-IC is fixed with glue to the 2. Installation CBA; when removing entire flat pack-IC, first apply (1) Using desoldering braid, remove the solder from the soldering iron to center of the flat pack-IC and heat foil of each pin of the flat pack-IC on the CBA so you up.
  • Page 11 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 (1MΩ) that is properly grounded to remove any static electricity that may be charged on the body.
  • Page 12: 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.
  • Page 13: Operating Controls And Functions

    OPERATING CONTROLS AND FUNCTIONS Front & Rear Terminals DVD ANALOG AUDIO OUT DVD/VCR AUDIO OUT jacks AUDIO IN jacks jacks Connect the supplied audio Connect audio cables coming Connect the supplied audio cables here through the audio from the audio out jacks of a ANT IN jack cables here through the Audio In jacks of a television or other...
  • Page 14 VCR mode DVD mode Disc/Tape Remote Control Button DVD-V DVD-V (Alphabetical order) POWER SPEED AUDIO SKIP CH. VCR TV SLOW ENTER DISPLAY PAUSE PLAY ANGLE STOP REC OTR AUDIO MENU ENTER SETUP TOP MENU RETURN CLEAR/ SEARCH CLEAR MODE ZOOM MODE C.RESET C.RESET...
  • Page 15: Front Panel Display

    Front Panel Display Lights up when power is on. DVD-V DVD-V Timer light lights up when a Displays a type of the disc which is inserted on the tray. timer recording is set. Lights up when the VD: DVD disc A-B repeat function Audio CD, MP3 is on.
  • Page 16: Cabinet Disassembly Instructions

    CABINET DISASSEMBLY INSTRUCTIONS 2. Disassembly Method NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. REMOVAL 1. Disassembly Flowchart REMOVE/*UNHOOK/ LOC. PART Fig. This flowchart indicates the disassembly steps to gain UNLOCK/RELEASE/ Note access to item(s) to be serviced. When reassembling, UNPLUG/DESOLDER follow the steps in reverse order.
  • Page 17 Reference Notes (S-2) CAUTION 1: Locking Tabs (L-1) and (L-2) are fragile. [3] Top Bracket Be careful not to break them. 1-1. Release three Locking Tabs (L-1). (S-2) 1-2. Release three Locking Tabs (L-2), then remove the Front Assembly. CAUTION 2: Electrostatic breakdown of the laser diode in the optical system block may occur as a potential difference caused by electrostatic charge accumulated on cloth, human body etc., during unpacking or repair...
  • Page 18 (S-6) (S-7) (S-6) [7] DVD Main (S-7) CBA Unit CN301 CN201 DVD Mecha (S-7) (S-8) (S-8) [8] VCR Chassis Unit Solder Short the three short lands by soldering. Short (Either of two places.) lands Short lands FPC Cable Fig. D5 View for A Solder Fig.
  • Page 19 Cylinder Assembly FE Head ACE Head Assembly SW512 Lead with blue stripe [9] Deck Assembly LD-SW Desolder (S-11) [12] Main CBA [9] Deck Assembly [11] Power SW CBA Cam Gear (S-9) [12] Main CBA Hole [10] DVD Shaft (S-10) Open/Close CBA Hole Desolder LD-SW...
  • Page 20 HOW TO EJECT MANUALLY 1. Remove the Top Case, Front Assembly and Top Bracket. 2. Remove four Screws (S-3) in Fig. D3. Do not disconnect connectors. 3. While lifting up the DVD Mecha, rotate the roulette in the direction of the arrow as shown below. 4.
  • Page 21: Electrical Adjustment Instructions

    ELECTRICAL ADJUSTMENT INSTRUCTIONS NOTE: CBA AND PWB MEANS PRINTED WIRING Figure 1 BOARD. EXT. Syncronize Trigger Point NOTE: 1. Electrical adjustments are required after replacing circuit components and certain mechanical parts. It 1.0H 0.5H is important to do these adjustments only after all V-Sync 6.5H±1H (412.7µs±63.5µs) repairs and replacements have been completed.
  • Page 22: Firmware Renewal Mode (firmware Version Up)

    FIRMWARE RENEWAL MODE (FIRMWARE VERSION UP) FIRMWARE is built-in program to operate DVD player. " ******* " differ depending on the models. To get rid of error when playing new software (disc) in the market, FIRMWARE version is updated. Perform F/W Version Up Mode Model No : ******* the following to update the FIRMWARE version.
  • Page 23 9. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order. Fig. g appears on the screen. " ******* " differ depending on the models. MODEL : ******* Version : *.** Region : * EEPROM CLEAR : CLEAR EXIT: POWER Fig.
  • Page 24: Troubleshooting

    TROUBLESHOOTING Table of Contents for the Troubleshooting Flow Chats Flow Chart Description Page The power cannot be turned on. 1-10-2 The fuse blows out. 1-10-2 When the output voltage fluctuates. 1-10-2 When buzz sound can be heard in the vicinity of power circuit. 1-10-2 -FL is not outputted.
  • Page 25 1. Power Supply Section FLOW CHART NO.1 The power cannot be turned on. See FLOW CHART No.2 <The fuse blows out.> Is the fuse normal? Is normal state restored when once unplugged Check for lead or shor-circuiting of primary power cord is plugged again after several seconds. circuit component and service it if defective.
  • Page 26 FLOW CHART NO.6 P-ON+9V is not outputted. (AL+5V is outputted normally.) Check D015, D031, C018, and their periphery, Is 12V voltage supplied to the collector of Q055? and service it if defective. Is the "L" pulse inputted to the base of Q052? Replace IC501.
  • Page 27 FLOW CHART NO.12 DVD-P-ON+3.3V is not outputted. (DVD-P-ON+12V is outputted normally.) Is the "H" pulse (approximately 5V) inputted into Check R1077 and their periphery, and service it if the base of Q1011? defective. Replace Q1011. FLOW CHART NO.13 DVD-P-ON+5V is not outputted. (DVD-P-ON+12V is outputted normally.) Is the "H"...
  • Page 28 2. DVD Section FLOW CHART NO.1 The key operation is not functioning. Are the contact point and the installation state of Re-install the key switches (SW2001, SW2002, the key switches (SW2001-2003) normal? SW2003) correctly or replace the poor switch. When pressing each key switches (SW2001, Check the key switches (SW2001, SW2002, SW2002, SW2003), do the voltage of each pin SW2003) and their periphery, and service it if...
  • Page 29 FLOW CHART NO.5 The [No Disc] indication. Replace the DVD Main CBA. No improvement can be found. Original DVD Main CBA is poor. Replace the DVD Mechanism. FLOW CHART NO.6 Both picture and sound do not operate normally. Replace the DVD Main CBA. No improvement can be found.
  • Page 30 FLOW CHART NO.7 Picture does not appear normally. Set the disc on the disc tray, and playback. Replace the DVD Main CBA or the DVD Are the video signals outputted to each pin of Mecha. CN1601 on the Main CBA? CN1601 8PIN S-Y(I/P)
  • Page 31 FLOW CHART NO.8 Audio is not outputted. Set the disc on the disc tray, and playback. Replace the DVD Main CBA or the DVD Mecha. Are the analog audio signals outputted to each pin of CN1601 on Main CBA? CN1601 14PIN AUDIO-L CN1601 16PIN AUDIO-R Check each line between each pin of CN1601 Are the analog audio signals inputted to each pin...
  • Page 32 3. VCR Section FLOW CHART NO.1 The key operation is not functioning. Are the contact point and the installation state of Re-install some key switches correctly or the key switches normal? replace some key switches. Check the key switches and their periphery, and Is the control voltage normally inputted into service it if defective.
  • Page 33 FLOW CHART NO.3 Cassette tape can not be loaded. When loading a cassette tape, on Pin(69) of Check the line between the start sensor and IC501, does the "L" pulse switch to the "H" pulse? Pin(69) of IC501, and service it if defective. When loading a cassette tape, is the specified Replace the Capstan Motor Unit.
  • Page 34 FLOW CHART NO.6 Capstan Motor does not rotate. Is 5V voltage supplied to Pin(2) of CN502? Check the P-ON+5V line and service it if defective. Is over approximately 2.6V voltage supplied to Check the line between Pin(5) of CN502 and Pin(5) of CN502? Pin(28) of IC501, and service it if defective.
  • Page 35 FLOW CHART NO.10 Video E-E does not appear. 1) In the external input mode Is the Video signal inputted to Pins(28,30,32) of Check the line between the video input IC301? terminal (rear) and Pin(28) of IC301, and service it if defective. Check the line between the video input terminal (front) and Pin(30) of IC301, and service it if defective.
  • Page 36 FLOW CHART NO.11 Hi-Fi E-E audio does not operate normally. Check the peripheral circuit of the front input terminal and service it if defective. Is each signal supplied to each pin of IC451 as below? L-ch R-ch Check the peripheral circuit of the rear input Front input terminal Pin(9) Pin(71)
  • Page 37 FLOW CHART NO.12 Hi-Fi audio can not be recorded normally. (E-E mode is normal.) Is the REC FM signal outputted to Pin(26) of IC451? Replace IC451. Service the line between Pin(8) of CN253 and Is the line between Pin(8) of CN253 and Pin(26) of IC451 normal? Pin(26) of IC451.
  • Page 38 FLOW CHART NO.15 Hi-Fi audio can not be playbacked normally in the linear audio mode. (E-E mode is normal.) Is the audio signal outputted to Pin(10) of IC301? Is the audio signal supplied to Pin(6) of IC301? Check the line between Pin(10) of Replace IC301 and Pin(4) of IC451, and IC301.
  • Page 39: Block Diagrams

    BLOCK DIAGRAMS <VCR SECTION> Servo / System Control Block Diagram 1-11-1 H9641BLS...
  • Page 40 Video Block Diagram 1-11-2 H9641BLV...
  • Page 41 Audio Block Diagram H9641BLA 1-11-3...
  • Page 42 Hi-Fi Audio Block Diagram H9641BLH 1-11-4...
  • Page 43 Power Supply Block Diagram 1-11-5 H9641BLP...
  • Page 44 BLOCK DIAGRAMS <DVD SECTION> DVD System Control / Servo Block Diagram 1-11-6 H9641BLSD...
  • Page 45 Digital Signal Process Block Diagram 1-11-7 H9641BLD...
  • Page 46 DVD Video / Audio Block Diagram 1-11-8 H9641BLVD...
  • Page 47: Function Indicator Symbols

    FUNCTION INDICATOR SYMBOLS Note: If a mechanical malfunction occurs, the power is turned off. When the power comes on again after that by pressing [POWER] button, an error message is displayed on the TV screen for 5 seconds. MODE INDICATOR ACTIVE When reel and capstan mechanism is "EJECT R"...
  • Page 48: Schematic Diagrams/ Cba's And Test Points

    SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS NOTE: CBA AND PWB MEANS PRINTED WIRING Notes: BOARD. 1. Do not use the part number shown on these draw- ings for ordering. The correct part number is shown Standard Notes in the parts list, and may be slightly different or amended since these drawings were prepared.
  • Page 49 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.
  • Page 50 Main 1/8 Schematic Diagram < VCR Section > MAIN 1/8 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Ref No. Position IC501 IC505 TRANSISTORS Q501 Q506 CONNECTORS CN501 CN502 CN504 VARIABLE RESISTOR VR501 TEST POINTS TP505 TP513 1-12-3 1-12-4 H9641SCM1...
  • Page 51 Main 2/8, Sensor & Power SW Schematic Diagrams < VCR Section > IC611 MATRIX CHART NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. SACD PSCAN REPEAT GROUP TITLE SACD MAIN 2/8 PSCAN REPEAT TITLE GROUP Ref No. Position IC571 HD VCD TRANSISTORS Q503 Q504...
  • Page 52 Main 3/8 Schematic Diagram < VCR Section > MAIN 3/8 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Ref No. Position IC301 TRANSISTORS Q301 Q302 Q303 Q421 Q422 Q425 Q426 CONNECTOR CN253 TEST POINTS TP301 TP302 H9641SCM3 1-12-7 1-12-8...
  • Page 53 Main 4/8 Schematic Diagram < VCR Section > NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. 1-12-9 1-12-10 H9641SCM4...
  • Page 54 Main 5/8 Schematic Diagram < VCR Section > MAIN 5/8 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Ref No. Position IC1201 IC1402 IC1403 TRANSISTORS Q1201 Q1202 Q1204 Q1351 AA-1 Q1385 CONNECTOR CN1601 H9641SCM5 1-12-11 1-12-12...
  • Page 55 Main 6/8 Schematic Diagram < VCR Section > MAIN 6/8 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Ref No. Position IC751 AE-3 TRANSISTOR Q391 AF-3 TEST POINTS TP751 AF-2 TP753 AF-2 TP754 AF-2 H9641SCM6 1-12-13 1-12-14...
  • Page 56 Main 7/8 & DVD Open/Close Schematic Diagrams < VCR Section > MAIN 7/8 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Ref No. Position IC1002 AI-4 IC1004 AJ-3 TRANSISTORS Q052 AL-4 Q055 AK-3 Q056 AL-3 Q057 AK-3 Q1004 AJ-2 Q1005 AK-2 Q1006 AL-2...
  • Page 57 Main 8/8 Schematic Diagrams < VCR Section > MAIN 8/8 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. CAUTION Ref No. Position FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. IC1001 AP-1 CAUTION ! NOTE : ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES TRANSISTORS Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
  • Page 58 DVD Main 1/3 Schematic Diagram < DVD Section > DVD MAIN 1/3 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Ref No. Position IC201 IC202 IC301 IC461 IC462 TRANSISTORS Q251 Q252 Q253 Q254 CONNECTORS CN201 CN301 CN401 1-12-19 1-12-20 H9641SCD1...
  • Page 59 DVD Main 2/3 Schematic Diagram < DVD Section > DVD MAIN 2/3 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Ref No. Position IC101 CONNECTOR CN702 H9641SCD2 1-12-21 1-12-22...
  • Page 60 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. IC101 VOLTAGE CHART PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP ----- ----- ----- ----- ----- ----- ----- -----...
  • Page 61 DVD Main 3/3 Schematic Diagram < DVD Section > DVD MAIN 3/3 NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Ref No. Position Note: IC103 is not supplied separately. IC103 Be sure to replace with the DVD Main CBA unit when servicing IC103. IC503 IC601 CONNECTOR...
  • Page 62 Main CBA Top View < VCR Section > DVD Open/Close Power SW CBA CAUTION ! CAUTION Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, CBA Top View Top View If Main Fuse (F1001) is blown, check to see that all components in the power supply REPLACE ONLY WITH THE SAME TYPE FUSE.
  • Page 63 Main CBA Bottom View < VCR Section > MAIN CBA CAUTION ! CAUTION Ref No. Position 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 64 DVD Main CBA Top View < DVD Section > NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. WF10 CN601 WF15 WF16 CN201 WF12 WF14 CN401 BE5900G04012 1-12-31 1-12-32...
  • Page 65 DVD Main CBA Bottom View < DVD Section > NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. BE5900G04012 1-12-33 1-12-34...
  • Page 66 PIN DESCRIPTION FOR DVD MAIN CN201 PIN DESCRIPTION CN401 PIN DESCRIPTION Pin No. Signal Name Name Function PIN NO. Signal Name Name Function TS(+) Tracking Control Signal(+) EV+1.2V Ever+1.2V Power Supply FS(+) Focus Control Signal(+) EV+1.2V Ever+1.2V Power Supply FS(-) Focus Control Signal(-) EV+3.3V Ever+3.3V Power Supply...
  • Page 67: Waveforms & Voltage Chart

    WAVEFORMS & VOLTAGE CHART DVD MAIN MAIN CN201 CN301 CN253 CN1001 CL2003 Voltage Voltage Voltage Voltage Voltage / WF No. / WF No. / WF No. / WF No. / WF No. WF15 WF19 WF16 WF20 WF16 WF19 WF15 WF21 POWER SW WF22 WF21...
  • Page 68 NOTE: Input VCR: COLOR BAR SIGNAL WITH 1KHz AUDIO SIGNAL (WF1~WF3, WF17~WF22, WF31, WF32) DVD: POWER ON (STOP) MODE (WF4~WF9) CD: 1kHz PLAY (WF10, WF11) Pin 14, 16 of CN1601 (MAIN) Pin 4 of CN1601 (MAIN) TP751(MAIN) Pin 14, 16 of CN601 (DVD MAIN) Pin 4 of CN601 (DVD MAIN) V-OUT E-E VIDEO-Cr/Pr...
  • Page 69 NOTE: Input VCR: COLOR BAR SIGNAL WITH 1KHz AUDIO SIGNAL (WF1~WF3, WF17~WF22, WF31, WF32) DVD: POWER ON (STOP) MODE (WF4~WF9) CD: 1kHz PLAY (WF10, WF11) Pin 19 of CN1001(MAIN) WF13 WF17 WF21 Pin 1, 3 of CN253 (MAIN) Pin 7, 9 of CN253 (MAIN) Pin 19 of CN401(DVD MAIN) FP-DIN 0.5ms...
  • Page 70 NOTE: Input VCR: COLOR BAR SIGNAL WITH 1KHz AUDIO SIGNAL (WF1~WF3, WF17~WF22, WF31, WF32) DVD: POWER ON (STOP) MODE (WF4~WF9) CD: 1kHz PLAY (WF10, WF11) WF29 WF33 WF25 Pin 1 of CN504 (MAIN) Pin 5 of CN504 (MAIN) Pin 3 of CN502 (MAIN) C-FG 0.5ms AE-H...
  • Page 71: Wiring Diagram

    WIRING DIAGRAM < VCR SECTION > 1-14-1 H9641WI...
  • Page 72 WIRING DIAGRAM < DVD SECTION > H9641WID 1-14-2...
  • Page 73: System Control Timing Charts

    SYSTEM CONTROL TIMING CHARTS [ VCR Section ] Mode SW : LD-SW LD-SW Position detection A/D Input voltage Limit Symbol (Calculated voltage) 3.76V~4.50V (4.12V) 4.51V~5.00V (5.00V) 0.00V~0.25V (0.00V) 1.06V~1.50V (1.21V) 0.66V~1.05V (0.91V) 1.99V~2.60V (2.17V) 1.51V~1.98V (1.80V) 3.20V~3.75V (3.40V) 0.26V~0.65V (0.44V) 4.51V~5.00V (5.00V) 2.61V~3.19V...
  • Page 74 Still/Slow Control Frame Advance Timing Chart 1) SP Mode 18 RF-SW The first rise of RF-SW after a rise in F-AD signal F-AD (Internal Signal) "H" "H" "Z" C-DRIVE "L" "L" Stop detection (T2) Acceleration Detection (T1) Slow Tracking Value PB CTL Reversal Limit Value 20ms...
  • Page 75 2) LP/SLP Mode 18 RF-SW The first rise of RF-SW after a rise in F-AD signal F-AD (Internal Signal) "H" "H" "Z" C-DRIVE "L" "L" Stop detection (T2) Acceleration Detection (T1) Slow Tracking Value PB CTL Reversal Limit Value 20ms 27 C-F/R 79 H-A-SW 78 C-ROTA...
  • Page 76 EJECT ST-S/ END-S "OFF" CASS.LOAD LD-FWD 0.2S LD-REV 0.7S LD-FWD 0.4S LD-FWD 0.2S LD-REV 0.2S LD-FWD 0.5S LD-REV STOP(A) PLAY LD-FWD PLAY LD-FWD LD-REV 0.2S LD-FWD PLAY PLAY PAUSE (SLOW) LD-FWD STILL(SLOW) PLAY LD-REV 0.2S LD-FWD PLAY STOP /EJECT LD-REV STOP(A) Fig.
  • Page 77 STOP(A) STOP LD-REV 0.2S LD-FWD STOP /EJECT 1.0S LD-FWD 0.5S LD-REV STOP(A) LD-REV 0.2S LD-FWD STOP /EJECT LD-REV 1.0S LD-FWD 0.5S LD-REV STOP(A) LD-FWD PAUSE LD-FWD 2.5S Short REV LD-REV 0.2S LD-FWD REC PAUSE REC or PAUSE STOP /EJECT LD-FWD 1.5S LD-REV 0.2S...
  • Page 78 [ DVD Section ] Tray Close ~ Play / Play ~ Tray Open Tray Disc Disc Tray Play Close Rotation Stop Open 3.3V Tray IN (TL221) Sled Drive 1.65V (TP303) 1.65V Disc Drive (TP301) 1.65V Focus Drive (TP304) Tracking Drive 1.65V (TP302) H9641TI...
  • Page 79: Ic Pin Function Descriptions

    IC PIN FUNCTION DESCRIPTIONS IC301(VIDEO/AUDIO/SIGNAL PROCESS/ Signal Function HEAD AMP IC) Name 30 VIDEO IN2 Video Input Signal Function 31 VIDEO VREG Regulator Terminal Name 32 VIDEO IN1 Video Input AUDIO VREF Audio Standard Voltage 33 VCP VC Filter AUDIO LINE AMP Line Amp.
  • Page 80 Signal Signal Function Function Name Name REC CURRENT VCC 5V(LCH) Lch 5V Power Supply ADJUST REC Current Adjust Output OUTPUT 1/2 VCC 1/2 Vcc Terminal TERMINAL REC CURRENT REC Current Adjust Input ADJUST INPUT REC MUTE REC Mute Terminal TERMINAL 71 GND Head Amp.
  • Page 81 Signal Signal Function Function Name Name POWER Standard Voltage Filter REG FILT SUPPLY FOR Power Supply for Logic Terminal LOGIC FILTER AUTO PLL Roop Filter Terminal for CHIP SELECT Auto Control Chip Select Terminal TERMINAL Not Used SERIAL DATA AM Standard Detection INPUT Serial Data Input Terminal AM DETECTOR...
  • Page 82 Signal Active Signal Active Function Function Name Level Name Level Audio Mute Control Composite Video OUT A-MUTE-H 38 OUT VIDEO-OUT Signal (Mute = ìHî) Signal Output OUT DISPLAY- 7seg. Driver IC Data Vss2 Vss2 DATA Control Output Signal Composite Video IN VIDEO-IN 7seg.
  • Page 83 IC571 [ PT6313-S-TP ] Signal Active Function Name Level Signal A/D Key Data Signal In/Out Name Function IN KEY-1 Name Deck Mode Position FP-CLK Clock Input IN LD-SW Detector Signal FP-STB Serial Interface Strobe Tape Start Position IN ST-S Detector Signal Not Used VCR Mode LED 70 OUT DVD-L-IND...
  • Page 84 IC1001 (PHOTOCOUPLER) Signal Function Name Signal Function DC Output Name DC Output ANODE Anode VREF Output Voltage Control CATHODE Cathode EMITTER Emitter COLLECTO Collector IC1201 (OP AMP) Signal Function IC751 (SWITCH) Name A OUTPUT AUDIO-L Output Signal Function Name A-INPUT AUDIO Input Signal Input A+INPUT...
  • Page 85 IC1403(VIDEO DRIVER) Signal Function Name C IN Chrominance Signal Input BIAS BIAS Luminance Signal(Interlace) Y IN Input Y OUT Luminance Signal Output Composite Video Signal CVBS OUT Output C OUT Chrominance Signal Output H9641PIN 1-16-7...
  • Page 86: Lead Identifications

    LEAD IDENTIFICATIONS KRA103M 2SC1815-GR(TPE2) KIA4558P 2SK3543 KRC103M KTC3198(Y) KTA1266(GR) KTC3203(Y) KTA1267(Y) KTC3193(Y) KTC3199(Y,BL) G D S E C B E C B MM1636XWRE PT6313-S-TP CAT24WC02JI LTV-817B-F PQ070XZ5MZP TC4053BF(N) RN1511(TE85R) MM1637XVBE 1: Vin 2: Vc 3: Vo 4: Vadj B1 E B2 5: GND 1 2 3 LA71205M-MPB-E...
  • Page 87: Exploded Views

    EXPLODED VIEWS NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Cabinet 2L071 2L071 2L071 2L021 2L021 2L071 2L021 L0-9 2L082 L0-9 W003 Sensor CBA 2L021 2L062 2L012 2L051 DVD Main 2B11 CBA Unit 2B52 2B15 Power SW CBA 2B17 Sensor CBA 2B16 2L054 2L051...
  • Page 88 Packing Unit FRONT H9641PEX 1-18-3...
  • Page 89: Deck Mechanism Section

    DECK MECHANISM SECTION VCR/DVD COMBINATION DV-NC150U TABLE OF CONTENTS 1. STANDARD MAINTENANCE................2-1-1 2. SERVICE FIXTURE AND TOOLS..............2-2-1 3. MECHANICAL ALIGNMENT PROCEDURES ..........2-3-1 4. DISASSEMBLY / ASSEMBLY PROCEDURES OF DECK MECHANISM ..2-4-1 5. ALIGNMENT PROCEDURES OF MECHANISM ..........2-5-1 6.
  • Page 90: Standard Maintenance

    STANDARD MAINTENANCE Service Schedule of Components This maintenance chart shows you the standard of replacement and cleaning time for each part. Because those may replace depending on environment and purpose for use, use the chart for reference. H: Hours : Cleaning : Replace Deck Periodic Service Schedule...
  • Page 91 Cleaning Cleaning of ACE Head Clean the head with a cotton swab. Video head cleaning procedure Procedure 1. Apply one drop of cleaning liquid to the cleaning 1. Remove the top cabinet. paper with the baby oiler. 2. Dip the cotton swab in 90% isopropyl alcohol and 2.
  • Page 92: Service Fixture And Tools

    SERVICE FIXTURE AND TOOLS J-1-1, J-1-2, J-1-3, J-1-4 Ref. Name Parts No. Code Adjustment J-1-1 Test Tape 9HSFL8A Head Adjustment of ACE Head Azimuth and X Value Adjustment of ACE Head / J-1-2 Test Tape 9HSFL8NW Adjustment of Envelope Waveform J-1-3 Test Tape 9HSFL8HA...
  • Page 93: Mechanical Alignment Procedures

    MECHANICAL ALIGNMENT PROCEDURES NOTE: CBA AND PWB MEANS PRINTED WIRING B. Method to place the Cassette Holder in the tape- BOARD. loaded position without a cassette tape 1. Disconnect the AC Plug. Explanation of alignment for the tape to correctly run 2.
  • Page 94 1. Tape Interchangeability Alignment Note: To do these alignment procedures, make sure that the Tracking Control Circuit is set to the preset position every time a tape is loaded or unloaded. (Refer to page 2-3-4, procedure 1-C, step 2.) Equipment required: Dual Trace Oscilloscope VHS Test Tape (9HSFL8NW) (Refer to "SERVICE FIXTURE AND TOOLS"...
  • Page 95 1-A. Preliminary/Final Checking and 3. Check to see that the tape runs without creasing at Take-up Guide Post [4] or without snaking between Alignment of Tape Path Guide Roller [3] and ACE Head. (Fig. M3 and M5) Purpose: 4. If creasing or snaking is apparent, adjust the Tilt Adj. Screw of the ACE Head.
  • Page 96 5. When Guide Rollers [2] and [3] (Refer to Fig. M3) are aligned properly, there is no envelope drop either at Good the beginning or end of track as shown in Fig. M9. FM envelope signal Center Position Dropping envelope level at the beginning of track. CTL signal FM envelope output signal is adjusted at maximum.
  • Page 97 1-D. Azimuth Alignment of Audio/ Control/ Erase Head Purpose: To correct the Azimuth alignment so that the Audio/ REV Post [5] Control/Erase Head meets tape tracks properly. Symptom of Misalignment: If the position of the Audio/Control/Erase Head is not properly aligned, the Audio S/N Ratio or Frequency Response will be poor.
  • Page 98: Disassembly/assembly Procedures Of Deck Mechanism

    DISASSEMBLY/ASSEMBLY PROCEDURES OF DECK MECHANISM Before following the procedures described below, be sure to remove the deck assembly from the cabinet. (Refer to CABINET DISASSEMBLY INSTRUCTIONS.) All the following procedures, including those for adjustment and replacement of parts, should be done in Eject mode; see the positions of [41] and [42] in Fig.
  • Page 99 REMOVAL INSTALLATION STEP START- REMOVE/*UNHOOK/ /LOC. PART ADJUSTMENT Fig. No. UNLOCK/RELEASE/ CONDITION UNPLUG/DESOLDER DM1 , DM14 [29] [25] Idler Gear DM1 , DM14 * ( L-11 ) [30] [29] Idler Arm DM2 , DM14 * ( P-6 ) [31] [25] BT Arm Loading Arm ( SP ) ( + ) Refer to Alignment...
  • Page 100 Top View [41] [42] [43] [46] [14] [13] [11] [15] [36] [10] [12] [35] [34] [40] [29] [30] [16] [39] [38] Fig. DM1 Bottom View [20] [33] [32] [24] [26] [27] [25] [23] [28] [22] [21] [31] Fig. DM2 H9641DA 2-4-3...
  • Page 101 (S-1) (S-1) (L-1) (L-3) (S-1A) (L-2) (P-1) Installation of [3] and [6] First, insert [6] diagonally in [3] as shown below. Then, install [6] in [3] while pushing (L-1) in a direction of arrow. After installing [6] in [3], confirm that pin A of [3] enters hole A of [6] properly.
  • Page 102 [11] (S-4A) (L-4) [46] (P-3) [13] [47] Removal of [11] [12] (L-14) 1) Remove screw (S-4A). 2) Unhook spring (P-2). [10] Release (L-4) while (P-2) holding [12] with a finger. Loosen a finger holding [12] and remove [11]. (S-2) Pin of [12] Pin of [10] Groove of [28] When reassembling [10] and...
  • Page 103 Installation of [13] and [12] (S-5) [14] (S-6) [16] [13] [15] Hook spring (P-3) up to [12] and [13], then install then to (P-3) the specified position so that [12] will be floated slightly while holding [12] and [13]. (Refer to Fig. A.) [12] Fig.
  • Page 104 (S-8) [22] (C-2) (C-1) [23] (L-6) [21] (P-5) [20] Cap Belt (P-5) [28] Installation position of Cap Belt [21] Cap Belt When installing [23], install the spring (P-5) to [28] as shown in the left figure, and then install [23] while Pin on pressing the spring (P-5) to bottom...
  • Page 105 (P-6) [25] (C-4) [31] Refer to the Alignment Section, Page 2-5-1. (S-9) [29] [33] [30] (L-11) (L-10) [32] (L-8) (C-3) [27] [28] [24] [26] (L-9) Fig. DM14 Fig. DM13-1 [36] Break belt (P-7) Installation of [25] [34] Position of Mode Lever when installed [40] Pin of [35] Pin of [31]...
  • Page 106 [42] [41] [43] (L-13) [44] [45] Slide Fig. DM17 Slide Plate (S-11) Fig. DM16 H9641DA 2-4-9...
  • Page 107: Alignment Procedures Of Mechanism

    ALIGNMENT PROCEDURES OF MECHANISM The following procedures describe how to align the Alignment 1 individual gears and levers that make up the tape loading/ unloading mechanism. Since information about the state Loading Arm (SP) and (TU) Assembly of the mechanism is provided to the System Control Install Loading Arm (SP) and (TU) Assembly so that their Circuit only through the Mode Switch, it is essential that triangle marks point to each other as shown in Fig.
  • Page 108: Deck Exploded Views

    DECK EXPLODED VIEWS Deck Mechanism View 1 B494 L1467 L1191 B553 B411 B567 L1053 B410 L1051 L1322 B501 B560 L1450 L1450 B426 L1466 B121 B126 B492 B571 Some Ref. Numbers are not in sequence. H9641DEX 2-6-1...
  • Page 109 Deck Mechanism View 2 B587 B521 B487 B416 B591 B520 B590 B522 L1406 B148 B499 B508 B592 B573 B574 B558 B564 B557 B414 B565 B525 L1151 B417 B568 B134 B133 B593 B491 B488 B559 B570 B516 B502 B507 B513 Some Ref. Numbers are not in sequence. H9641DEX 2-6-2...
  • Page 110 Deck Mechanism View 3 L1321 B347 L1321 B355 B354 B483 L1341 B425 B482 B562 B300 B563 B313 B529 B360 B359 B361 B555 B303 Some Ref. Numbers are not in sequence. B514 H9641DEX 2-6-3...
  • Page 111 DV-NC150U © COPYRIGHT 2004 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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