Sanyo VHR-M261EV Service Manual
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Sanyo VHR-M261EV Service Manual

Sanyo video cassette recorder service manual
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VIDEO CASSETTE RECORDER
VHR-M261EV,VHR-M261SP
VHR-M291E,VHR-M291EV,VHR-M291IR
1. SUMMARY
CABINET & MAIN CHASIS
ELECTRICAL (ADJUSTMENT)
ELECTRICAL (TROUBLESHOOTING)
ELECTRICAL (BLOCK DIAGEAMS)
2. ELECTRICAL (CIRCUIT DIAGEAMS 1)
3. ELECTRICAL (CIRCUIT DIAGEAMS 2)
4. ELECTRICAL (PRINTED CIRCUIT BOARD 1)
5. ELECTRICAL (PRINTED CIRCUIT BOARD 2)
6. MECHANISM (PARTS LOCATIONS)
MECHANISM (DISASSEMBLY 1)
7. MECHANISM (DISASSEMBLY 2)
8. MECHANISM (DISASSEMBLY 3)
9. MECHANISM (ADJUSTMENT)
A. MECHANISM (MAIN TENACE/
MECHANISM (TROUBLESHOOTING)
B. MECHANISM (EXPLODED VIEWS)
C. REPLACEMENT PAETS LIST
I
i n d ex
INDEX
INSPECTION PROCDURE)

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Summary of Contents for Sanyo VHR-M261EV

  • Page 1 VIDEO CASSETTE RECORDER VHR-M261EV,VHR-M261SP VHR-M291E,VHR-M291EV,VHR-M291IR INDEX 1. SUMMARY CABINET & MAIN CHASIS ELECTRICAL (ADJUSTMENT) ELECTRICAL (TROUBLESHOOTING) ELECTRICAL (BLOCK DIAGEAMS) 2. ELECTRICAL (CIRCUIT DIAGEAMS 1) 3. ELECTRICAL (CIRCUIT DIAGEAMS 2) 4. ELECTRICAL (PRINTED CIRCUIT BOARD 1) 5. ELECTRICAL (PRINTED CIRCUIT BOARD 2) 6.
  • Page 2 FILE NO. SERVICE MANUAL Video Cassette Recorder VHR-M261EV (Product Code : 143 182 15) (Europe) VHR-M271SP (Product Code : 143 182 16) (Spain, Portugal) VHR-M291E (Product Code : 143 182 12) (U.K.) VHR-M291EV (Product Code : 143 182 14) (Europe)
  • Page 3 REFERENCE MODEL NUMBER DECODER FRONT REAR VHR-M291E 2SCART VHR-M291IR 2SCART VHR-M271SP CANAL 2SCART VHR-M261EV 1SCART VHR-M291EV 1SCART...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS SECTION 1 BLOCK DIAGRAMS .....3-17 1. Power Block Diagram ....3-17 SUMMARY 2.

  • Page 5: Key To Abbreviations

    SECTION1 SUMMARY KEY TO ABBREVIATIONS :Alternating Current :Low Pass Filter :Automatic Color Control :Maximum ACSS :Automatic Channel Setting System :Modulator :Adjust MECHA.CTL :Mechanism Control :Audio Erase :Microphone :Automatic Frequency Control :Minimum :Automatic Fine Tuning :Mixer, Mixing :Automatic Gain Control M.M. :Monostable, Multivibrator A.H.SW :Audio Head Switch...

  • Page 6: Important Safety Precautions

    IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, the products are strictly inspected to confrom with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such com- pliance, it is equally important to implement the following precautions when a set is being serviced.

  • Page 7: Safety Check After Servicing

    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. •...

  • Page 8: Proposal For Applying Short Protection

    PROPOSAL FOR APPLYING SHORT PROTECTION • The Contents of Examination As all the IC that is applied to VCR is controlled by IIC, mutual communication, if Vcc of IC is short or open with detecting ‘Acknowledge’ data of the specific IC according to each power(5V, 5VT) µ-COM gets unable to detect ‘ACK’...

  • Page 9: Service Notice On Replacing Eeprom

    SERVICE NOTICE ON REPLACING EEPROM In case that defective EEPROM of PAL models is replaced, to operate these sets from the initial state MP KEY must be repaired as well before delivering to the customer. If MP KEY isn’t repaired the setting of RF OUT channel or LANGUAGE might be different from that for cus- tormer’s country.

  • Page 10: Specifications

    SPECIFICATIONS General Power : 200~240V, 50Hz Power consumption : Approx. 14 watts(Energy Saving mode : 3 watts) Video Head system : Rotary 2 heads, helical scanning system Tape speed : PAL/MESECAM : 23.39 mm/s (SP mode) 11.69 mm/s (LP mode) NTSC (Playback only) : 33.35 mm/s (SP mode) 16.67 mm/s (LP mode) 11.12 mm/s (EP mode)

  • Page 11: Location Of Customer Controls

    LOCATION OF CUSTOMER CONTROLS F R O N T R E A R F R O N T R E A R 11. POWER 11. MAINS LEAD 12. STOP & TAPE EJECT 12. EURO AV2 13. CASSETTE COMPARTMENT (VHR-M271SP, VHR-M291IR,VHR-M291E ONLY) 14.
  • Page 12 R E M O T E C O N T R O L POWER button NUMBER buttons TV/VCR TV/VCR button CM-CUT CM-CUT button INPUT SP/LP SAFE SP/LP button SAFE button EJECT REC button EJECT button PAUSE PAUSE button FF button REW button PLAY PLAY button...

  • Page 13: Cabinet & Main Chassis

    SECTION 2 CABINET & MAIN CHASSIS SERVICE METHOD Electrical Part (1) Re-assembly Flow for service like Fig. 2-1 Timer C.B.A Main C.B.A Housing & Deck Assembly (2) To check and replace Electrical parts Re-assemble the unit according to No.1) Re-assembly Flow. Place the unit like Fig.

  • Page 14: Exploded Views

    EXPLODED VIEWS 1. Cabinet and Main Frame Section NOTE) Refer to “SECTION 5 REPLACEMENT PARTS LIST” in order to look for the part number of each part. _ OPTIONAL PARTS...

  • Page 15: Packing & Accessory Remote Control Section

    2.Packing & Accessory Remote Control Section NOTE) Refer to “SECTION REPLACEMENT PARTS LIST NOTE) in order to look for the part number of each part. OPTIONAL PARTS CABLE SET ASS'Y (Optional parts) PLUG ASS'Y 1WAY (Optional parts) PLUG ASS'Y 2WAY (Optional parts) SCART CABLE INSTRUCTION MANUAL...

  • Page 16: Electrical Adjustment Points Arrangement

    SECTION 3 ELECTRICAL ELECTRICAL ADJUSTMENT POINTS ARRANGEMENT : Measurement point : Adjustment point SCART JACK Drum Connector Hi-Fi AVCP Secam W5J5 SYSTEM NICAM Micom W5J4 H/SW PG.ADJ L/D IC E2PROM DISPLAY(DOT,CLK) KEY-BOARD 2 KEY-BOARD 1 MAIN P.C.B (Component Side)

  • Page 17: Electrical Adjustment Procedures

    ELECTRICAL ADJUSTMENT PROCEDURES 1. Servo Adjustment 1) PG Adjustment • Test Equipment a) OSCILLOSCOPE b) PAL TEST TAPE (VHS SP) • Adjustment And Specification MODE MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION V.Out PLAY VR501 6.5 ± 0.5H H/SW(W5J4, W5J5) • Adjustment Procedure a) Insert the PAL SP Test Tape and play.

  • Page 18: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. Power Circuit(SMPS) (1) No 5.3VA. No 5.3VA. Replace the F101 Is the F101 normal? (Use the same Fuse). Is the BD101 normal? Replace the BD101. Is the R101 normal? Replace the R101. Does the oscillation waveform appear at Is Vcc(about 13~15V) permittable at the the IC101 Pin 1? IC101 Pin 4?
  • Page 19 7. Power Circuit(SMPS) (2) No 12VA.(Capstan) No 12VA. Does 5.3VA work normally? Check whether 5.3VA is out of order. Is the D109 normal? Replace the D109. Check 12VA Line of the Main PCB short. (3) No 12VA (CANAL, Buffer) No 12VA. Is Vcc(about 13VA) put into the D160(+)? Replace the Peripheral Circuitry of D160.
  • Page 20 7. Power Circuit(SMPS) (4) No 5VT(5V) No 5VT.(5V) Is 5.3VA put into the Q152(Q151) collector? Is the Q163(Q162) Base “H”? Check the µ-com Control. Is about 4.7V put into the Check the Q163(Q162) Q152(Q151) Base? whether it works normally. Check or Replace the Q152(Q151).

  • Page 21: Servo Circuit

    2. Servo Circuit Unstable Video in PB Mode. Does the on screen noise level change periodically? Do CTL pulses appear at IC501 pin 37? Does the CFG divide Is the height of the CTL waveform appear at IC501 Head adjusted correctly? pin 40? Do the CTL pulses move Adjust the CTL Head.
  • Page 22 Drum Motor stopped. Does 12V appear at PMD01 Pin 4? Does 2.8V appear at PMD01 Pin 1? Check Power. Check Connector and Drum Motor Ass’y. Does Drum PWM appear at IC501 Pin 26? Check the Components and foil Pattern between IC501 Pin 26 and PMD01 Do DFG Pulses appear at PMD01 Pin 3? Pin 1 for shorts.
  • Page 23 Capstan Motor Stopped. Does 12VA appear at PMC01 Pin 5? Does 2.8V appear at PMC01 Pin 4? Check Power. Check Connector and Capstan Does PWM wave appear at IC501 Motor Ass’y. Pin 25? Check the Components and foil Patterns Does the CFG signal appear at PMC01 Connected between IC501 Pin 25 and Pin 6? PMC01 Pin 4 for shorts.

  • Page 24: System & Front Panel Circuit

    3. System & Front Panel Circuit Auto stop. Does SW30 waveform appear at IC501 Pin 24? Do Take-up reel pulses Check the Drum Motor appear at IC501 Pin 4? Signal. Do Take-up reel pulses Change IC501. appear at the base of Q514? Does 5.3V appear at RS501.
  • Page 25 Cassette tape loading is unstable. Is REG 12V applied to IC502 Pin 6? Is High signal applied to IC501 Pin 57 Check the power. when inserting the CST? Is 5.3V applied to R544? Does Low signal occur form IC501 Pin 19 Check the CST SW and Check the power.

  • Page 26: Y/C Circuit

    4. Y/C CIRCUIT (1) No Video in EE Mode, No Video in EE Mode Check the Video Input Does the Video signal Jack. appear at the IC301 Pin 38? (Line In Jack) Is 5V applied to the IC301 Check the 5V Line. Pins 16, 40, 55, 58, 75, 87? (Power Circuit) Check the System Circuit.
  • Page 27 3. Y/C CIRCUIT (2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode, Is 5V applied to the IC301 Check the line of the 5.2V Line. (Power Circuit) Pins 16, 40, 55, 58, 87? Is the I C Bus siganl applied Refer to ‘SYSTEM I C BUS...
  • Page 28 3. Y/C CIRCUIT (3) When the C(Color) signal doesn’t appear on the screen in PB Mode, Is 5V applied to the IC301 Check the line of the 5.2V Line. (Power Circuit) Pins 16, 40, 55, 58, 87? Is the Color Rotary signal Check the Color Rotary applied to the IC301 Circuit.
  • Page 29 3. Y/C CIRCUIT (4) When the Video signal doesn’t appear on the screen in REC Mode, Is the EE signal normal? Check EE Mode. Is 5V applied to the IC301 Check the line of the 5.2V Pins 16, 40, 55, 58, 87? Line.(Power Circuit) Does PB Mdoe operate Check PB Mode.

  • Page 30: Tuner/If Circuit

    5. Tuner/IF circuit (1) No picture on the TV screen No picture on the TV screen Does the Video signal at Is +30VT applied to Check 33VT line. the TU701 Pin24? TU701 Pin 16? Is +5VT applied to Check 5VT line. TU701 Pin 13? Does the Clock signal Check the liC Clock...
  • Page 31 (2) No sound No sound Check the Vcc of IC301 Pin 75. Check 5VT power. Check the Tuner Audio signal Chekc the signal flow from TU701 at IC301 Pin 76. Pin21 to IC301 Pin 76. Check the Audio signal at IC301 Pin 96. Replace IC301.

  • Page 32: Block Diagrams

    BLOCK DIAGRAMS 1. Power Block Diagram T101 BD101 R101 TRANSFORMER TO Canal+ RECTIFIER 12VA SNUBBER R115 D160 & SMOOTHING BLOCK (D109, C120, C103 D151 L104,C121) (D102,R104, C105,C106) F. µ-com RECTIFIER Q161 & SMOOTHING R163 SEARCH "H" 24V S/W (D110, C123) R106 Q159,R166,R167 TO CAPSTAN M...
  • Page 33 2. Tu/IF, NICAM & A2 Block Diagram WITHOUT 3-19 3-20...

  • Page 34: Y/C Block Diagram

    3. Y/C Block Diagram 1) PB Mode 2) REC Mode IC201 TA1238F IC201 TA1238F IC 301 MAIN LA71598M C. COMB COMB C. COMB CONV DELAY DELAY BPF1 C LPF IC301 SP 'B' PB LA71598M SP REC (TO DRUM) V. IN 3 Y-LPF SP 'A' PB DETAIL...

  • Page 35: System Block Diagram

    4. System Block Diagram 3-23 3-24...

  • Page 36: Audio Block Diagram

    5. AUDIO Block Diagram 6. SCART Block Diagram (From Tuner) V.IN (From µ-COM) Tuner V.IN Scart 1, V.OUT IC901 S2 V.IN Scart 2, V.IN Scart 2, V.OUT S1 V.IN Scart 1, V.IN V.OUT (To AVCP) 3-25 3-26...

  • Page 37: Circuit Diagrams

    CIRCUIT DIAGRAMS * IC101 Voltage Sheet * IC102 Voltage Sheet 16.1 1. Power, Tuner, NICAM/A2 Circuit Diagram 16.3 No 5.3VA and 5VG, 5VT. IC101 IC102 D109, C120 are defective. Switching dead. D106 is defective. No 14VA, 12VA are 12VT. IC101 is defective. Power dead.

  • Page 38: A/V, Secam, Vps Circuit Diagram

    2. A/V, SECAM, VPS Circuit Diagram WAVEFORM & VOLTAGE SHEET _ _ IC301 Oscilloscope Waveform X301 is defective. PB COLOR Signal disappear. IC301 Pin IC301 Pins 38,32,31 IC301 Pin IC301 Pin PB mode Video in PB/REC mode REC mode 500mvp-p 1Vp-p 4.2Vp-p 1.4Vp-p...

  • Page 39: System Circuit Diagram

    * IC501 Waveform Photographs 3. System Circuit Diagram LD Motor will not operate. Reset is defective. IC502, ZD501 are defective. Set dead. PB PG will not operate. VCR dead. IC504 is defective. VR501 is defective. IC505 is defective. IC501 Pin 24 IC501 Pin 27 IC501 Pin 31 IC501 Pin 32...

  • Page 40: Scart Circuit Diagram

    * IC901 Voltage Sheet 4. SCART Circuit Diagram IC901(MM1443) 11.6 11.6 11.7 11.6 11.6 11.7 IC801 42, 43 Pins are defective. OPTION : WITHOUT All Audio is not appear. VHR-M271SP MODEL ONLY PB Hi-Fi V.OUT NORMAL Audio V.IN 3-35 3-36...
  • Page 41 5. SHUTTLE & KEY Circuit Diagram 3-37 3-38...

  • Page 42: Printed Circuit Board Diagrams

    PRINTED CIRCUIT BOARD DIAGRAMS 1. MAIN P.C.Board LOCATION GUIDE PG.ADJ ABBREVIATIONS ADJ : Adjustment PG : Pulse Generator NOTE : Measurement Point : Adjustment Point Emitter : TRANSISTOR Collector Base (Solder Side) 3-39 3-40...

  • Page 43: Key 1 P.c.board

    2. KEY 1 P.C.Board 3. KEY 2 P.C.Board LOCATION GUIDE LOCATION GUIDE (Solder Side) (Solder Side) 3-41 3-42...
  • Page 44 SECTION 4 MECHANISM CONTENTS DECK MECHANISM PARTS DECK MECHANISM ADJUSTMENT LOCATIONS • Tools and Fixtures for Service.....4-14 1. Mechanism and Mode Switch Alignment • Top View...........4-1 Check ............4-15 • Bottom View ..........4-1 2. Deck Preparation for Adjustment ....4-17 DECK MECHANISM 3.

  • Page 45: Deck Mechanism Parts Locations

    DECK MECHANISM PARTS LOCATIONS (FOR NORMAL MODELS) • Top View Pracedure Fig- Part Fixing Type Starting 1 Drum Assembly 3 Screws , Cap FPC A-1 2 Plate Assembly Top Two Hooks 3 Holder Assembly CST Chassis Hole Bracket Side 'L' 5 6 Bracket Assembly Door 4 Guide CST...
  • Page 46 DECK MECHANISM PARTS LOCATIONS (FOR JOG SHUTTLE MODELS) • Top View Pracedure Fig- Part Fixing Type Starting 1 Drum Assembly 3 Screws , Cap FPC A-1 2 Plate Assembly Top Two Hooks 3 Holder Assembly CST Chassis Hole Bracket Side 'L' 5 6 Bracket Assembly Door 4 Guide CST...

  • Page 47: Deck Mechanism Disassembly

    DECK MECHANISM DISASSEMBLY (S2) Stator (S2) (S3) Drum Motor (S3) Rotor Drum Sub Assembly (Fig. A-1-1) Drum FPC (S1) (For Jog Shuttle Models) (S1) (S1) Optional Parts Holder FPC (only for 2HD MODEL) Cap FPC (Fig. A-1-1) Fig. A-1 (Fig. B-1) 1.
  • Page 48 DECK MECHANISM DISASSEMBLY Plate Assembly Top (Fig. A-2-1) Holder Assembly CST Lever Stopper(R) (Fig. A-2-2) Arm Assembly F/L Arm F/L (Fig. A-2-6) Lever Assembly S/W (Fig. A-2-7) (S4) (H5) Bracket Side (L) (S4) (Fig. A-2-4) Groove Gear Rack F/L Groove Bracket (For Jog Shuttle Models) Assembly Door...

  • Page 49: Plate Assembly Top

    DECK MECHANISM DISASSEMBLY 2. Plate Assembly Top (Fig. A-2-1) 1) Unhook the (H1) and separate the Left Side. 2) Unhook the (H2) and lift up the Plate Assembly Top. NOTE (1) When reassembling, confirm (A),(B) Part of the Plate (H4) Assembly Top is inserted to the (L),(R) Grooves of the (H3) Bracket Side(L) and Bracket Assembly Door.

  • Page 50: Arm Assembly Cleaner

    DECK MECHANISM DISASSEMBLY Arm Assembly Cleaner (Fig. A-3-1) (S5) Base Assembly A/C Head ( H1) (Fig. A-3-3) (Fig. A-3-2) Head F/E Fig. A-3 (For Jog Shuttle Models) 8. Arm Assembly Cleaner(Fig. A-3-1) NOTE 1) Break away the (A) part shown above Fig. A-3-1 from the (1) Place the Spring Lever S/W of the above (No.1) as Embossing of the Chassis in the clockwise direction and original position.

  • Page 51: Brake Assembly S

    DECK MECHANISM DISASSEMBLY Spring S Brake Brake Assembly S (Fig. A-4-1) Arm Assembly Tension Reel T Spring Tension (Fig. A-4-5) Band Assembly Spring T Brake (Fig. A-4-3) Tension Reel S Brake Assembly T (Fig. A-4-2) (Fig. A-4-4) (For Jog Shuttle Models) Fig.

  • Page 52: Support Cst

    DECK MECHANISM DISASSEMBLY Opener Lid (Fig. A-5-3) Arm Assembly T/up (Fig. A-5-4) Assembly Pinch Base Assembly P4 (Fig. A-5-5) Support CST (Fig. A-5-1) (Fig. A-5-2) Fig. A-5 15. Support CST (Fig. A-5-1) NOTE 1) Break away the (A) part shown above Fig. A-5-1 from the (1) When reassembling, confirm the opener lid is placed on Embossing of the Chassis in the clockwise direction, and the Hook(H1) of the Arm Assembly T/UP as below figure.

  • Page 53: Belt Capstan/Motor Capstan

    DECK MECHANISM DISASSEMBLY Belt Capstan (Fig. A-6-1) Motor Capstan Washer(W1) Clutch Assembly D33-K (Fig. A-6-3) (Fig. A-6-2) Washer(W2 ) Optional Parts Gear H-Up/D-K Gear Up/D-K Lever F/R (For Hi-Rewind Models) (For Normal Models) (Fig. A-6-4) Hook(H1) Spring Up/D Brake Assembly Capstan (4HD MONO/4HD Hi-Fi Model Only) (Fig.

  • Page 54: Bracket Assembly Jog

    DECK MECHANISM DISASSEMBLY Brake Assembly Capstan Hole (A)+(B) Barke Assembly Capstan Gear Cam (H2) (4HD MONO/4HD Hi-Fi Model Only) Spring Capstan (Fig. A-7-4) Hole (A) Guide Rack F/L (H1) (S4) Barke Assembly Jog (S4) (For Jog Shuttle Models) (Fig. A-7-2) Gear Rack F/L (Fig.

  • Page 55: Gear Drive/Gear Cam/Gear Connector

    DECK MECHANISM DISASSEMBLY Washer (W1) Gear Drive (Fig. A-8-1) Gear Cam Hole (B) (Fig. A-8-2) Brake Assembly Capstan (4HD/4HD Hi-Fi Model Only) Gear Connector Hole (A) (Fig. A-8-3) Gear Connector Hole (A')+(A) Hole (B') Hole (A') Chassis Bracket Assembly L/D Motor Hole (B')+(B) (Fig.

  • Page 56: Gear Sector

    DECK MECHANISM DISASSEMBLY Washer (W1) Gear Sector (Fig. A-9-1) (S4) Base Tension Plate Slider (Fig. A-9-2) (Fig. A-9-3) Lever Tension (Fig. A-9-4) (For Jog Shuttle Models) Fig. A-9 29. Gear Sector (Fig. A-9-1) NOTE 1) Remove the Washer(W1) and lift up the Gear Sector. 30.

  • Page 57: Gear Assembly P3/Gear Assembly P2

    DECK MECHANISM DISASSEMBLY (Fig. A-10-1) Gear Assembly P3 Gear Assembly P3 Gear Assembly P2 (Fig. A-10-2) Gear Assembly P2 Chassis Optional Parts Base Assembly P2 Arm Assembly Idler Arm Assembly Idler Jog (Fig. A-10-4) (For Normal Models) For Jog Shuttle Models (Fig.
  • Page 58 DECK MECHANISM DISASSEMBLY • Tools and Fixfures for Service 1. Cassette Torque meter 2. Alignment tape 3. Torque gauge SRK-VHT-303(Not SVC part) Parts No NTSC: DTN-001 600g.Cm ATG Parts No: D00-D006 PAL:DTN-0002 Parts No:D00-D002 4. Torque gauge adaptor 5. Post height adjusting driver 6.

  • Page 59: Deck Mechanism Adjustment

    DECK MECHANISM ADJUSTMENT (FOR NORMAL MODELS) 1.Mechanism Alignment Position Check Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected. Test Conditions (Mechanism Test Equipment/ Fixture Check Point Condition) • Mechanism and Mode Switch Position •...
  • Page 60 DECK MECHANISM ADJUSTMENT (FOR JOG SHUTTLE MODELS) 1.Mechanism Alignment Position Check Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected. Test Conditions (Mechanism Test Equipment/ Fixture Check Point Condition) • Mechanism and Mode Switch Position •...

  • Page 61: Checking Torque

    DECK MECHANISM ADJUSTMENT 2. Preparation for Adjustment (To set the Loading the Cassette without Tape. Cover the Holes of the End Sensors at the both sides of Deck Mechanism to the Loading state the Bracket Side(L) and Bracket Assembly Door to pre- without inserting a Cassette Tape).

  • Page 62: Guide Roller Height Adjustment

    DECK MECHANISM ADJUSTMENT 4.Guide Roller Height Adjustment Purpose: To regulate the Height of the Tape so that the Bottom of the Tape runs along the Tape Guide Line on the Lower Drum. 4-1. Preliminary Adjustment Test Equipment/ Fixture Test Conditions (Mechanism Condition) Adjustment Point •...

  • Page 63: Audio/Control (A/C) Head Adjustment

    DECK MECHANISM ADJUSTMENT 5. Audio/Control (A/C) Head Adjustment Purpose: To insure that the Tape passes accurately over the Audio and Control Tracks in exact Alignment in both the Record and Playback Modes. 5-1. Preliminary Adjustment (Height and Tilt Adjustment) Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape. Test Equipment/ Fixture Test Conditions (Mechanism Condition) Adjustment Point...

  • Page 64: Precise Adjustment(Azimuth Adjustment)

    DECK MECHANISM ADJUSTMENT 5-2. Confirm that the Tape passes smoothly slowly turn the Tilt Adjustment Screw(C) in the Counterclockwise direction. between the Take-up Guide and Pinch Roller(using a Mirror or the naked eye). After completing Step 5-1.(Preliminary Adjustment), NOTE: check that the Tape passes around the Take-up Guide and Pinch Roller without Folding or Curling at the Top or Check the RF Envelope after adjusting the A/C Head, if Bottom.

  • Page 65: Adjustment After Replacing Drum Assembly (Video Heads)

    DECK MECHANISM ADJUSTMENT 7. Adjustment after Replacing Drum Assembly (Video Heads) Purpose: To correct for shift in the Roller Guide and X value after replacing the Drum. Test Conditions Test Equipment/ Fixture Connection Point Adjustment Points (Mechanism Condition) • CH-1: PB RF Envelope •...

  • Page 66: Maintenance/Inspection Procedure

    MAINTENANCE/INSPECTION PROCEDURE (FOR NORMAL MODELS) 1 Check before starting repairs The following faults can be remedied by cleaning and oil- ing. Check the needed lubrication and the conditions of cleanliness in the unit. Check with the customer to find out how often the unit is used, and then determine that the unit is ready for inspec- tion and maintenance.
  • Page 67 MAINTENANCE/INSPECTION PROCEDURE (FOR JOG SHUTTLE MODELS) 1 Check before starting repairs The following faults can be remedied by cleaning and oil- ing. Check the needed lubrication and the conditions of cleanliness in the unit. Check with the customer to find out how often the unit is used, and then determine that the unit is ready for inspec- tion and maintenance.

  • Page 68: Required Maintenance

    MAINTENANCE/INSPECTION PROCEDURE 4. Supplies Required for Inspection and 2. Required Maintenance Maintence The recording density of a VCR(VCP) is much higher than that of an audio tape recorder. VCR(VCP) components must (1) Grease : Kanto G-311G (Blue) or equivalent be very precise, at tolerances of 1/1000mm, to ensure com- (2) Isopropyl Alcohol or equivalent patiblity with other VCRs.

  • Page 69: Greasing

    MAINTENANCE/INSPECTION PROCEDURE (2) Periodic greasing 5-2) Greasing Grease specified locations every 5,000 hours. (1) Greasing guidelines Apply grease, with a cleaning patch. Do not use excess 1) Loading Path Inside & Top side 5) Lever Tension Groove grease. It may come into contact with the tape transport 2) Shaft 6) Clutch Assembly D33 Shaft or drive system.

  • Page 70: Mechanism Troubleshooting Guide

    MECHANISM TROUBLESHOOTING GUIDE 1.Deck Mechanism Auto REW doesn't work. Is the output of END sensor of supply side "H"? “H”: more than 3.5V “L”: less than 0.7V~1V Is the Vcc. voltage of End Check the syscon power. sensor 5V? Replace End sensor. Is the voltage across IR LED Replace LED.
  • Page 71 MECHANISM TROUBLESHOOTING GUIDE AUTO STOP. (PLAY/CUE/REV) Check aligment positions (page 4- 14) Check spring Pinch. In Play/Cue/Rev is the pinch roller in contact with the capstan Is the output of DFG, DPG OK? Replace Drum Motor. shaft. Are there T/up and supply reel Check Servo, Syscon.
  • Page 72 MECHANISM TROUBLESHOOTING GUIDE In PB mode Tape Presence not sensed. Is the Pinch Roller attached Check Alignment positions to the Capstan Motor Shaft? (page 4-14) Does the T/Up Is the Belt ok? Replace the Belt. Reel turn? Check the clutch and the Idler Does the Capstan Motor turn? Assembly.

  • Page 73: Front Loading Mechanism

    MECHANISM TROUBLESHOOTING GUIDE 2. Front Loading Mechanism Cassette cannot be inserted. Is the Lever Switch Spring Replace or add the Does the Lever Switch work? damaged or omitted? Lever Switch Spring. Does the F/L switch work Replace F/L Switch. normally? Is the Vcc of Main P.C.Board Check syscon circuit.
  • Page 74 MECHANISM TROUBLESHOOTING GUIDE Cassette will not load. Does the CST insert? Does the opener Lid work? Replace the Opener Lid. Does the Gear Rack F/L work? Replace the Rear Rack F/L. Does the Opener Door work? Does the Arm Assembly F/L work? Is the opener Door assembled correctly? Does the L/D Motor work? Replace the Arm Assembly F/L.

  • Page 75: Exploded Views

    EXPLODED VIEWS 1. Front Loading Mechanism Section 4-31...

  • Page 76: Moving Mechanism Section (1)

    EXPLODED VIEWS 2. Moving Mechanism Section(1) 4-32...

  • Page 77: Moving Mechanism Section (2)

    EXPLODED VIEWS 3. Moving Mechanism Section(2) 4-33...
  • Page 78 SECTION 5 REPLACEMENT PARTS LIST A:VHR-M261EV,B:M271SP,C:M291EV,D:M291IR,E:M291E RUN : 2001.02.20 . Mechanical Section NSP : Not Service Parts AL LOCA. NO. PARTS NO. A B C D E DESCRIPTION SPECIFICATION N.S.P. REMARKS ASSEMBLY SECTION 645 048 0973 DECK ASSY,VIDEO D33Y1 (2HD, NP, HSR, VCR)
  • Page 79 O O O O O WASHER STOPPER 1WZZR-0004D . Cabinet & Main Frame Section ASSEMBLY SECTION 645 048 1055 PWB(PCB) ASSY,TOTAL SANYO POWER KEY BOARD 6871R-2146A 645 048 1079 O O O O PWB(PCB) ASSY,TOTAL CBCY202H/W SANYO LEFT KEY 6871R-2170A...
  • Page 80 A:VHR-M261EV,B:M271SP,C:M291EV,D:M291IR,E:M291E RUN : 2001.02.20 . Electrical Section NSP : Not Service Parts AL LOCA. NO. A B C D E DESCRIPTION SPECIFICATION REMARKS PART NO.(LG) CAPACITOR C101 645 047 5696 O O O O CAPACITOR,DRAWING PCX2 275V 0.1UF,M (PILKO) 624-088F...
  • Page 81 A:VHR-M261EV,B:M271SP,C:M291EV,D:M291IR,E:M291E RUN : 2001.02.20 NSP : Not Service Parts AL LOCA. NO. PARTS NO. A B C D E DESCRIPTION SPECIFICATION N.S.P. REMARKS C396 645 047 3821 O O O O O CAPACITOR,TUBULAR(HIGH DIELEC) 0.022UF 50V Z F TA26 S...
  • Page 82 IC103 645 047 4132 O O O O O IC,KEC KIA431 3 PIN TP 0IKE431000A IC301 645 048 0102 O O O O O IC,SANYO LA71598M 100QFP BK AVCP PAL 0ISA715980A IC501 645 048 0065 O O O IC,MICRO CONTROLLER...
  • Page 83 A:VHR-M261EV,B:M271SP,C:M291EV,D:M291IR,E:M291E RUN : 2001.02.20 NSP : Not Service Parts AL LOCA. NO. PARTS NO. A B C D E DESCRIPTION SPECIFICATION N.S.P. REMARKS L503 645 047 4187 O O O O O INDUCTOR AXIAL LEAD 12M K 2.3X3.4 L5 TP...
  • Page 84 A:VHR-M261EV,B:M271SP,C:M291EV,D:M291IR,E:M291E RUN : 2001.02.20 NSP : Not Service Parts AL LOCA. NO. PARTS NO. A B C D E DESCRIPTION SPECIFICATION N.S.P. REMARKS Q5G5 645 047 4859 O TRANSISTOR 2SC5343-L TP AUK TO92 0TR534309BA Q5P1 645 047 4781 O O O O TRANSISTOR KRC101M(TO92M),4.7-4.7,KEC...
  • Page 85 A:VHR-M261EV,B:M271SP,C:M291EV,D:M291IR,E:M291E RUN : 2001.02.20 NSP : Not Service Parts AL LOCA. NO. PARTS NO. A B C D E DESCRIPTION SPECIFICATION N.S.P. REMARKS R345 645 047 4651 O O O O O RESISTOR,FIXED CARBON FILM 6.8K OHM 1/6 W 5.00% TA26...
  • Page 86 A:VHR-M261EV,B:M271SP,C:M291EV,D:M291IR,E:M291E RUN : 2001.02.20 NSP : Not Service Parts AL LOCA. NO. PARTS NO. A B C D E DESCRIPTION SPECIFICATION N.S.P. REMARKS R581 645 048 0263 O O O O O RESISTOR,FIXED CARBON FILM 68K OHM 1/6 W 5.00% TA26...
  • Page 87 A:VHR-M261EV,B:M271SP,C:M291EV,D:M291IR,E:M291E RUN : 2001.02.20 NSP : Not Service Parts AL LOCA. NO. PARTS NO. A B C D E DESCRIPTION SPECIFICATION N.S.P. REMARKS SW5T2 645 047 5511 O O O O O SWITCH,TACT THVV502GAA POSTECH NON 12V 5A 556-219B SW5T4...
  • Page 88 SANYO Electric Co.,Ltd. Osaka, Japan Feb./ '01/ 4320 K...

This manual is also suitable for:

Vhr-m291eVhr-m291evVhr-m291irVhr-m261spVhr-m271sp

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