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Weight: 3.0kg Dimensions: VR407/77 - 360 x 94 x 251mm VR620/77, VR625/77 - 360 x 94 x 242mm Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified be used.
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2. CABINET AND CHASSIS ASSEMBLY 9965 000 05831 ALIGNMENT TAPE,LP PAL ! 9965 000 08701 FRONT PANEL ASSY,VR620/77 ! 9965 000 08714 FRONT PANEL ASSY,VR625/77 ! 9965 000 08715 FRONT PANEL ASSY,VR407/77 501A 9965 000 07920 CASS DOOR,VR620/77,VR625/77 9965 000 07878 CASS DOOR,VR407/77...
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VR407/77, VR620/77, VR625/77 R2058 MG RES 18kΩ,1/10W R3216 MG RES 470kΩ,1/10W R2059 MG RES 47kΩ,1/10W R3217 MG RES 330kΩ,1/10W R2060 MG RES 18kΩ,1/10W R3218 MG RES 5.6kΩ,1/10W R2201 MG RES,VR620/77,VR625/77 R3219 RES 10kΩ,1/4W 47KΩ,1/10W R3220 MG RES 10kΩ,1/10W R2202...
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VR407/77, VR620/77, VR625/77 CAP,VR620/77,VR625/77 R7002 MG RES 330Ω,1/10W 0.033µF,16V R7003 MG RES 330Ω,1/10W CAP,VR407/77 0.01µF,25V R7004 MG RES 330Ω,1/10W E CAP 4.7µF,25V R7005 MG RES 330Ω,1/16W E CAP 1µF,50V R7006 MG RES 330Ω,1/10W E CAP 47µF,6.3V R7007 MG RES 330Ω,1/16W...
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www.freeservicemanuals.info Procedures for Lowering the Cassette holder assembly As the mechanism of this unit is integrated with the Housing assembly, the holder must be lowered and the two screws un- screwed when removing the Mechanism assembly. (L2a) [VR620/77, VR625/77] (L2a) Fig.
www.freeservicemanuals.info 1.4 Service position This unit has been designed so that the Mechanism and Main board assemblies can be removed together from the chassis assembly. Before diagnosing or servicing the cir- Main board assembly cuit boards, take out the major parts from the chassis as- TP2253 sembly.
www.freeservicemanuals.info Notes: 1.7 Emergency display function • The EMG detail information <1><2> show the information This unit has a function for storing the history of the past two on the latest EMG. emergencies (EMG) and displaying them on each FDP (or It becomes “...
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www.freeservicemanuals.info 1.7.3 EMG content description Note: EMG contents “E08/E09” are for the model with Dynamic Drum (DD). CONTENT CAUSE E01: Loading EMG When the mechanism mode cannot be changed to an- 1. The mechanism is locked in the middle of mode transition. other mode even when the loading motor has rotated 2.
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www.freeservicemanuals.info 1.7.4 EMG detail information <1> * 2 : Mechanism operation mode [Common table of MN* and M3*] The status (electrical operation mode) of the VCR and the sta- tus (mechanism operation mode/sensor information) of the Display Mechanism operation mode mechanism in the latest EMG can be confirmed based on the MN* M3* figure in EMG detail information <1>...
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www.freeservicemanuals.info 3– : Mechanism sensor information Note: [Common table of MN*, HD* and M3*] • EMG detail information <2> is the reference information stored using the remaining tape detection function of the Mechanism sensor information Display MN* / HD* cassette tape. As a result, it may not identify cassette cor- REC safety Start S-VHS SW...
www.freeservicemanuals.info SECTION 2 MECHANISM ADJUSTMENT 2.1 Before starting repair and adjustment 2.1.1 Precautions (1) Unplug the power cord plug of the VCR before using your Loading motor soldering iron. (2) Take care not to cause any damage to the conductor wires when plugging and unplugging the connectors.
www.freeservicemanuals.info 2. In case of mechanical failure 2.1.4 Jigs and tools required for adjustment If you cannot remove the cassette tape which is loaded be- Roller driver A/C head positioning tool Torque gauge cause of any mechanical failure, manually remove it by tak- ing the following steps.
www.freeservicemanuals.info 2.1.5 Maintenance and inspection 1. Location of major mechanical parts In this chapter, the two mechanism speeds are described by comparing the speeds of the standard type and the high-speed FF/REW type. It is possible to distinguish between these two types of mechanism by the diameters of their capstan pulleys. The capstan pulley diameter for the standard type is approx.
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www.freeservicemanuals.info 4. Suggested servicing schedule for main components The following table indicates the suggested period for such Guide rail Roller cam assembly service measures as cleaning,lubrication and replacement. In practice, the indicated periods will vary widely according to environmental and usage conditions.However, the indi- cated components should be inspected when a set is brought for service and the maintenance work performed if neces- sary.
www.freeservicemanuals.info 2.2 Replacement of major parts 2.2.3 Cassette holder assembly 1. How to remove 2.2.1 Before starting disassembling (Phase matching (1) Remove the guide rail and roller cam assembly. (See between mechanical parts) Fig.2-2-3a.) The mechanism of this unit is closely linked with the rotary (3 lugs on the guide rail and one lug on the roller cam encoder and system controller circuits.
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www.freeservicemanuals.info (5) While holding the left side of the cassette holder, lift the 2. How to install (Phase matching) cassette holder assembly so that the three legs on the (1) Insert the section (A) of the drive arm into the section (B) left side are all released.
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www.freeservicemanuals.info 2.2.6 A/C head Notches Guide hole Notch 1. How to remove Relay gear (1) Remove the two screws (A) and remove the A/C head together with the head base. (2) When replacing only the A/C head, remove the three screws (B) while controlling the compression spring.
www.freeservicemanuals.info 2. How to install (Centering the mounting position) Loading motor board assembly When the capstan motor has once been removed and then reinstalled out of the initial correct position in the rotational Loading motor direction, the capstan motor current may be unstable during Lugs operation in high or low temperatures.
www.freeservicemanuals.info 2.2.10 Rotary encoder 2.2.12 Change lever assembly, direct gear, clutch gear and coupling gear 1. How to remove (1) Remove the screw (A) and remove the rotary encoder 1. How to remove by pulling it up. (See Fig. 2-2-10a.) (1) Release the two lugs of the rotary encoder guide in the arrow-indicated direction and remove the change lever assembly.
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www.freeservicemanuals.info 2.2.13 Link lever 2.2.14 Cassette gear, control cam and worm gear 1. How to remove 1. How to remove (1) Remove the two slit washers. (1) Remove the control cam by lifting it. (2) Remove the link lever by lifting it from the shaft retained (2) Open the two lugs of the cassette gear outward and pull by the slit washers.
www.freeservicemanuals.info (3) Install the control plate so that the section A of the load- (3) Turn the loading arm gear (take-up side) clockwise so ing arm gear shaft fits into the hole (A) of the control plate, that the notch of the loading arm gear (take-up side) is the section B of the control plate guide into the hole (B), in alignment with the projection of the loading arm gear and the control plate comes under the section C of the...
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www.freeservicemanuals.info 2.2.17 Take-up lever, take-up head and control plate guide (1) Remove the spring of the take-up lever from the main deck. Spring (2) Remove the lug (A) of the take-up lever from the main Sub brake assembly deck and pull out the take-up lever and the take-up head Lug(A) (take-up side) together.
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www.freeservicemanuals.info 2.2.21 Tension brake assembly, reel disk (supply side) 2.2.23 Stator assembly and tension arm assembly (1) Remove the flat cable. 1. How to remove (2) Remove the two screws (A), (B) and remove the lug wire. (1) Remove the three lugs of the tension brake assembly (3) Remove the stator assembly by lifting in the arrow-indi- from the main deck and pull them off.
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www.freeservicemanuals.info 2.2.25 Upper drum assembly Notes: • To replace the upper drum assembly only may not be possible with some models. For upper drum assem- bly replacement, refer to the parts list. (When the parts number of the upper drum assembly is not listed on Lower drum assembly the parts list, then this cannot be replaced.) Coil parts...
www.freeservicemanuals.info 2.3 Compatibility adjustment pole base assembly (supply or take-up side). (7) Unload the cassette tape once, play back the alignment Notes: tape (A1) again and confirm the V.PB FM waveform. • Although compatibility adjustment is very important, (8) After adjustment, confirm that the tape wrinkling does not it is not necessary to perform this as part of the nor- occur at the roller upper or lower limits.
www.freeservicemanuals.info (4) Adjust the AUDIO OUT waveform and Control pulse waveform by turning the screws (1), (2) and (3) little by little until both waveforms reach maximum. The screw (1) and (3) are for adjustment of tilt and the screw (2) for azi- muth.
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www.freeservicemanuals.info [Perform adjustment steps (7) to (10) only for 2 Head (4) Set the VCR to the Auto adjust mode by transmitting the models equipped with LP mode.] code (F) twice from the Jig RCU. When the VCR enters the stop mode, the adjustment is completed. (7) Then play back the alignment tape (A2).
www.freeservicemanuals.info Mechanism Timing Chart EJECT CASS- Mechanism mode CASS-INS FF/REW STOP SLOW/STILL PLAY Control plate mark HIGH C CH HIGH Rotary encoder B CH HIGH A CH Control cam angle 264. 318. 412. Rotary encoder 114. 150. 167. 178. 207. 218.
www.freeservicemanuals.info SECTION 3 ELECTRICAL ADJUSTMENT 3.1.4 Switch settings and standard precautions Precaution The SW settings of the VCR and the standard precautions The following adjustment procedures are not only necessary for the electrical adjustments are as follows. after replacement of consumable mechanical parts or board assemblies, but are also provided as references to be re- •...
www.freeservicemanuals.info Servo circuit (8) Repeat steps (1) to (7) in the mode (B2). (9) Record the signal (A3) in the mode (B1), and play back 3.2.1 Switching point the recorded signal. Signal (A1) • Stairstep signal (10) Repeat steps (2) to (7). (A2) •...
www.freeservicemanuals.info SECTION 4 CHARTS AND DIAGRAMS NOTES OF SCHEMATIC DIAGRAM 4) Indication on schematic diagram Voltage Indications for REC and PB mode on the sche- matic diagram are as shown below. Safety precautions The Components identified by the symbol critical for safety. For continued safety, replace safety critical components only with manufacturer's recom- REC mode mended parts.
www.freeservicemanuals.info 6. Signal path Symbols CIRCUIT BOARD NOTES The arrows indicate the signal path as follows. 1. Foil and Component sides 1) Foil side (B side) : Playback signal path Parts on the foil side seen from foil face (pattern face) are indicated.
www.freeservicemanuals.info BOARD INTERCONNECTIONS ONLY USED FOR VR620/77, VR625/77 ONLY USED FOR VR620/77, VR625/77 OPEN OPEN MAIN (VIDEO/AUDIO Page 4-5) (SYSCON Page 4-7) (SW.REG Page 4-9) (TUNER Page 4-11) (FMA/DEMOD Page 4-13) (FRONT Page 4-15) (TERMINAL Page 4-19) (Page 4-16) OPEN ONLY USED FOR VR620/77, VR625/77 CON1...
www.freeservicemanuals.info MAIN ( VIDEO/AUDIO ) SCHEMATIC DIAGRAM Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. When replacing the parts , refer to the Parts List. TO FMA/DEMOD TO SYSCON TO SW.REG TO FMA/DEMOD TO U.DRUM...
ONLY USED FOR VR620/77, VR625/77 OPEN (NC) TO TUNER MN101D02GWG TO FMA/DEMOD TO TUNER TO TUNER, FMA/DEMOD TO TUNER OPEN OPEN S-80823ANNP AT24C04N-10SC [VR407/77] AT24C32N-10SC [VR620/77, VR625/77] TO VIDEO/AUDIO TO FMA/DEMOD TO TERMINAL TO VIDEO/AUDIO TO TERMINAL TO VIDEO/AUDIO p10334001a rev0...
www.freeservicemanuals.info MAIN ( SW.REG ) SCHEMATIC DIAGRAM Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. When replacing the parts , refer to the Parts List. TO SYSCON TO TUNER QQR0532-001 TO SYSCON TO VIDEO/AUDIO, SYSCON, TUNER,...
www.freeservicemanuals.info MAIN ( TUNER ) SCHEMATIC DIAGRAM Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. When replacing the parts , refer to the Parts List. MAIN [TUNER] : Used : Not used TO SW.REG TO VIDEO/AUDIO...
www.freeservicemanuals.info MAIN ( FMA/DEMOD ) SCHEMATIC DIAGRAM [VR620/77 , VR625/77] Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. When replacing the parts , refer to the Parts List. TO SW.REG TO TUNER TO TUNER,SYSCON TO SYSCON...
www.freeservicemanuals.info MAIN ( FRONT ) AND MINI FRONT SCHEMATIC DIAGRAMS The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. Note : When replacing the parts , refer to the Parts List. OPEN J5/V.UP(H) ONLY USED FOR VR620/77 , VR625/77...
www.freeservicemanuals.info LITHIUM BATTERY SCHEMATIC DIAGRAM [VR620/77 , VR625/77] The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. Note : When replacing the parts , refer to the Parts List. TO SYSCON FW3001 OPEN TO SYSCON CN3007...
www.freeservicemanuals.info MAIN ( TERMINAL ) SCHEMATIC DIAGRAM The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. Note : When replacing the parts , refer to the Parts List. ONLY USED FOR VR620/77 VR625/77 Delete a short pin ONLY USED FOR...
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www.freeservicemanuals.info COMPONENT PARTS LOCATION GUIDE MAIN REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION C903 A D 20M CAPACITOR C4009 L6003 B C 11O R2213 R3223 R7015 C904 B C 20M C4010 CN2001 L6032...
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www.freeservicemanuals.info MAIN , MINI FRONT AND LITHIUM BATTERY CIRCUIT BOARDS 4.10 MAIN , 28 MINI FRONT DANGEROUS VOLTAGE LPB110130-001D LPA10130-01A2 LPA10130-01A8 S7023 D7011 D7012 D7013 D7014 CN7002 S7024 C.BOX CTL/R.PAUSE L.MOTOR P AY PLAY TIMER CASS POWER PLAY ALPS ASS'Y S7027 CN7003 A/C HEAD...
www.freeservicemanuals.info 4.16 SYSTEM CONTROL BLOCK DIAGRAM MAIN ( SYSCON ) IC3001 ( SYSTEM CONTROL MICRO PROCESSOR ) CN3001 C3018 CAP MDA Timer Clock CAP REV(L) CAP REV (L) XC IN X3002 TIMER CLOCK (32KHz) CAP CTL V CAP CTL V XC OUT CAP FG C.FG IN...
www.freeservicemanuals.info 4.17 VIDEO BLOCK DIAGRAM MAIN ( VIDEO ) SYSCON V.PULSE V TO OSD I2C DATA A/V I2C CLK A/V V FROM OSD TU I2C CLK TU I2C DATA TP106 PB.FM VIDEO & AUDIO SIGNAL PROCESSOR ) USED USED Q901 X-tal Det.
4.18 AUDIO BLOCK DIAGRAM [VR407/77] MAIN ( AUDIO ) TUNER TU AUDIO SYSCON A.MUTE ( H ) N.REC ST ( H ) REAR OUT USED N.REC ( H ) AUDIO 62 61 POWER Q2052-Q2055 REAR IN A.MUTE AUDIO Q2051...
www.freeservicemanuals.info AUDIO BLOCK DIAGRAM [VR620/77 , VR625/77] 4.19 MAIN ( VIDEO/AUDIO , FMA/DEMOD ) REAR1 IN EXT2 IN ( R ) UDIO ( R ) EXT2 IN ( L ) AUDIO ( L ) J7101 U.DRUM FRONT IN AUDIO HEAD EXT1 IN ( R ) FMA CH1 UDIO ( R )
www.freeservicemanuals.info SECTION 5 PARTS LIST PACKING AND ACCESSORY ASSEMBLY ADHESIVE TAPE 309 (VR620/77, VR625/77) 306A FINAL ASSY HANDLING SPEC OF BARCODE...
www.freeservicemanuals.info MECHANISM ASSEMBLY A/C HEAD BOARD ASSY <12> LOADING MOTOR BOARD ASSY <55> Category MARK Grease NOTE:The section marked in AA and BB indicate lubrication and greasing areas.
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www.freeservicemanuals.info TABLE OF CONTENTS Section Title Page 1. DISASSEMBLY 1.1 DISASSEMBLY FLOW CHART ......................1-1 1.2 HOW TO READ THE DISASSEMBLY AND ASSEMBLY ..............1-1 1.3 DISASSEMBLY/ASSEMBLY METHOD ....................1-1 1.4 SERVICE POSITION ........................... 1-4 1.5 MECHANISM SERVICE MODE ......................1-4 1.6 JIG RCU MODE ..........................
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