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I Alignment for Mechanism I Adjustment Procedures I Disassembly/Assembly of Mechanism I Schematic Diagrams I Alignment Procedures of Mechanism I CBA’s I Deck Exploded Views I Exploded views I Deck Parts List I Parts List VIDEO CASSETTE RECORDER VCR 4500 VCR 4505...
MAIN SECTION VIDEO CASSETTE RECORDER VCR 4500/VCR 4505 Sec. 1: Main Section I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA’s I Exploded Views I Parts List TABLE OF CONTENTS Specifications ............... . . 1-1-1 Important Safety Precautions .
IMPORTANT SAFETY PRECAUTIONS Product Safety Notice J. Be careful that foreign objects (screws, solder droplets, etc.) do not remain inside the set. Some electrical and mechanical parts have special K. Crimp type wire connector safety-related characteristics which are often not evi- The power transformer uses crimp type connectors dent from visual inspection, nor can the protection they which connect the power cord and the primary side...
Safety Check after Servicing Chassis or Secondary Conductor Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and wires have been returned to their original posi- Primary Circuit Terminals tions. Afterwards, do the following tests and confirm the specified values to verify compliance with safety standards.
STANDARD NOTES FOR SERVICING Circuit Board Indications Pb (Lead) Free Solder When soldering, be sure to use the Pb free solder. a. The output pin of the 3 pin Regulator ICs is indi- cated as shown. How to Remove / Install Flat Pack-IC Top View Bottom View 1.
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3. The flat pack-IC on the CBA is affixed with glue, so (3) Bottom of the flat pack-IC is fixed with glue to the be careful not to break or damage the foil of each CBA; when removing entire flat pack-IC, first apply pin or the solder lands under the IC when removing soldering iron to center of the flat pack-IC and heat up.
Instructions for Handling Semi-conductors Electrostatic breakdown of the semi-conductors may Fine Tip Soldering Iron occur due to a potential difference caused by electro- static charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a grounding band (1MΩ) that is prop- erly grounded to remove any static electricity that may be charged on the body.
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.
[7] Cylinder Shield 2. When reassembling, solder wire jumpers as shown in Fig. D5. [8] Jack Board [ VCR 4500 ] 3. Before installing the Deck Assembly, be sure to place the pin of LD-SW on Main CBA as shown in 2.
ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: "CBA" is an abbreviation for Head Switching Position Adjustment "Circuit Board Assembly." Purpose: NOTE: To determine the Head Switching position during 1.Electrical adjustments are required after replacing playback. circuit components and certain mechanical parts. Symptom of Misadjustment: It is important to do these adjustments only after all repairs and replacements have been com- May cause Head Switching noise or vertical jitter...
The following symbols will appear on the indicator panel to indicate the current mode or operation of the VCR. On-screen modes will also be momentarily displayed on the tv screen when you press the operation buttons. Display panel [ VCR 4500 ] MODE INDICATOR ACTIVE POWER ON "...
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[ VCR 4505 ] TAPE IN " H "= LED Light on, " L "= LED Light off MODE INDICATOR ACTIVE STANDBY Power on = " H " Power off = " L " FUNCTION VCR mode = " H " TV mode = "...
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TV screen Note: OSD for mechanical error will be displayed for 5 sec. after the mechanical error occurs. When reel and capstan mechanism is not functioning When the drum is not working properly correctly Fig. 1 Fig. 4 When tape loading mechanism is not functioning cor- P-ON Power safety detection rectly Fig.
SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS Standard Notes Notes: WARNING 1. Do not use the part number shown on these draw- ings for ordering. The correct part number is shown Many electrical and mechanical parts in this chassis in the parts list, and may be slightly different or have special characteristics.
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LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. 2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F001) is blown, first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply.
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Comparison Chart of Main 1/6 Schematic Diagram Models and Marks MODEL MARK VCR 4500 VCR 4505 1-8-3 1-8-4 HG462SCM1...
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Comparison Chart of Main 2/6 & Sensor Schematic Diagrams Models and Marks MODEL MARK VCR 4500 VCR 4505 1-8-5 1-8-6 HG462SCM2...
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Comparison Chart of Main 3/6 Schematic Diagram Models and Marks MODEL MARK VCR 4500 VCR 4505 1-8-7 1-8-8 HG462SCM3...
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Comparison Chart of Main 4/6 & Jack Schematic Diagrams Models and Marks MODEL MARK VCR 4500 VCR 4505 1-8-9 1-8-10 HG462SCM4...
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Comparison Chart of Main 5/6 Schematic Diagram Models and Marks MODEL MARK VCR 4500 VCR 4505 CAUTION ! CAUTION ! For continued protection against fire hazard, Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
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Comparison Chart of Main 6/6 Schematic Diagram ( A ) Models and Marks MODEL MARK VCR 4500 VCR 4505 1-8-13 1-8-14 HG462SCM6...
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Comparison Chart of AFV Schematic Diagram ( A ) Models and Marks MODEL MARK VCR 4500 VCR 4505 1-8-15 1-8-16 HG462SCAFV...
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Main CBA Top View CAUTION ! BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER CAUTION ! For continued protection against fire hazard, SUPPLY CIRCUIT , AN ISOLATION TRANSFORMER MUST BE USED. Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. replace only with the same type fuse.
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Main CBA Bottom View CAUTION ! BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER CAUTION ! For continued protection against fire hazard, SUPPLY CIRCUIT , AN ISOLATION TRANSFORMER MUST BE USED. Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. replace only with the same type fuse.
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Jack CBA Top View Jack CBA Bottom View 1-8-21 1-8-22 BHG470F01013C...
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AFV CBA Top View ( A ) AFV CBA Bottom View ( A ) Comparison Chart of Models and Marks MODEL MARK VCR 4500 VCR 4505 BHC400F01093 Sub Jack CBA Top View ( A ) Sub Jack CBA Bottom View ( A ) BHG470F01013B...
WAVEFORMS (TP301 of Main CBA) UPPER (TP502 of Main CBA) LOWER C-PB 10mV x 10 RF-SW 0.5V x 10 (J23 of Main CBA) UPPER (TP502 of Main CBA) LOWER V-OUT 0.1V x 10 RF-SW 0.5V x 10 50µs (J23 of Main CBA) V-OUT E-E 10µs 50mV x 10...
Comparison Chart of Models and Marks Signal Active Mark Function Name Level Model Mark Head Amp IN H-A- VCR 4500 Comparator COMP Signal VCR 4505 N.U. Not Used Video Head IC501( SERVO / SYSTEM CONTROL IC ) OUT RF-SW Switching Pulse “H”...
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Signal Active Signal Active Mark Function Mark Function Name Level Name Level System Reset Capstan Power OUT C-POW- IN RESET Signal Switching (Reset=”L”) Signal IN XC-IN Sub Clock Power On IN P-ON-H Signal at High OUT XC-OUT Sub Clock LED Clock OUT DRV- Driver IC DATA...
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Signal Active Mark Function Name Level Drum Motor IN D-PFG Pulse PULSE Generator AMPVRE V-Ref for CTL F OUT AMPVRE V-Ref for CTL F IN P80/C P80/C Terminal Playback/ CTL (-) Record Control Signal (-) Playback/ CTL (+) Record Control Signal (+) CTL AMP AMPC...
LEAD IDENTIFICATIONS 2SC2785(F,H,J) 2SA1015-GR(TPE2) BA1F4M-T 2SA1020(Y) PT6958-FN-TP BN1F4M-T 2SC1815-BL(TPE2) BN1L4M-T 2SC1815-GR(TPE2) KRA103M 2SC1815-Y(TPE2) KRA104M 2SC2120-Y(TPE2) KRC103M 2SC3266-Y(TPE2) KTA1266(GR) KTA1267(GR,Y) KTA1281(Y) KTC3203(Y) KTC3199(BL,GR,Y) KTC3205(Y) 2SK3566 BU4052BCF-E2 E C B E C B CD4052BCSJX TC4052BF(EL) EL817A EL817B BR24L02F-WE2 EL817C CAT24WC02JI LTV-817B-F LTV-817C-F PS2561A-1(Q,W) G D S LA71750EM-MPB-E...
C151 CHIP CERAMIC CAP .(1608) F Z 0.1µF/50V or CHD1JZ30F104 Model Mark CHIP CERAMIC CAP .(1608) F Z 0.1µF/25V or CHD1EZ30F104 VCR 4500 CHIP CERAMIC CAP . FZ Z 0.1µF/50V CHD1JZ3FZ104 VCR 4505 C152 CHIP CERAMIC CAP .(1608) F Z 0.1µF/50V or CHD1JZ30F104 CHIP CERAMIC CAP .(1608) F Z 0.1µF/25V or CHD1EZ30F104...
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Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CHIP CERAMIC CAP .(1608) B K 0.047µF/25V CHD1EK30B473 CHIP CERAMIC CAP . CG J 68pF/50V CHD1JJ3CG680 C312 CHIP CERAMIC CAP . B K 8200pF/50V CHD1JK30B822 C346 CHIP CERAMIC CAP . CH J 68pF/50V or CHD1JJ3CH680 C313 CHIP CERAMIC CAP .(1608) F Z 0.1µF/50V or CHD1JZ30F104...
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Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. C460 CHIP CERAMIC CAP .(1608) B K 4700pF/50V CHD1JK30B472 C516 CHIP CERAMIC CAP . CH J 18pF/50V or CHD1JJ3CH180 C461 ELECTROLYTIC CAP . 22µF/10V M H7 CE1AMAVSL220 CHIP CERAMIC CAP . CG J 18pF/50V CHD1JJ3CG180 C462 CHIP CERAMIC CAP .(1608) B K 0.01µF/50V...
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Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CHIP CERAMIC CAP . CG J 470pF/50V CHD1JJ3CG471 D056 ZENER DIODE DZ-5.6BSCT265 or NDTC0DZ5R6BS C757 CHIP CERAMIC CAP .(1608) CH J 470pF/50V CHD1JJ3CH471 ZENER DIODE MTZJT-775.6C QDTC0MTZJ5R6 D057 ZENER DIODE DZ-10BSBT265 or NDTB00DZ10BS CHIP CERAMIC CAP .
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Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. L251 INDUCTOR 5.6µH-K-26T LLAXKATTU5R6 RES. BUILT-IN TRANSISTOR BN1F4M-T QQSZ00BN1F4M L301 INDUCTOR(100µH K) LAP02TA101K LLAXKATTU101 Q405 CHIP TRANSISTOR FMG4A T148 or QQ2Z000FMG4A L403 INDUCTOR 47µH-K-5FT LLARKBSTU470 CHIP TRANSISTOR RN1511(TE85R) QQ2Z00RN1511 L451 INDUCTOR 47µH-K-5FT...
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Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CARBON RES. 1/6W J 100k Ω or CHIP RES.(1608) 1/10W J 18k Ω R014 RCX6JATZ0104 R313 RRXAJR5Z0183 CARBON RES. 1/4W J 100k Ω CHIP RES.(1608) 1/10W J 18k Ω RCX4JATZ0104 R314 RRXAJR5Z0183...
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Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. CHIP RES.(1608) 1/10W J 5.6k Ω CARBON RES. 1/4W G 22k Ω R455 RRXAJR5Z0562 RCX4GATZ0223 CHIP RES.(1608) 1/10W J 39k Ω CARBON RES. 1/6W G 1.5k Ω or R456 RRXAJR5Z0393 R538...
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Ref. No. Mark Description Part No. Ref. No. Mark Description Part No. SW502 TACT SWITCH KSM0614B or SST0101HH013 X301 X'TAL 4.433619MHz or FXC445LLN001 TACT SWITCH SKQSAF001A or SST0101AL041 X'TAL 4.433619MHz 1811388 TACT SWITCH TC-1104(H=9.5) SST0101DNG01 X501 X'TAL 12.000MHz FXD126LDS001 SW503 TACT SWITCH KSM0614B or SST0101HH013 X502...
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AFV CBA Ref. No. Mark Description Part No. L101 BEAD CORE B16 RH 3.5X10X1.3 XL03010XM001 Ref. No. Mark Description Part No. L102 BEAD CORE B16 RH 3.5X10X1.3 XL03010XM001 AFV CBA 0VSA14857 TRANSISTORS Consists of the following Q101 TRANSISTOR KTA1266(GR) or NQS40KTA1266 CAPACITORS TRANSISTOR 2SA1015-GR(TPE2)
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DECK MECHANISM SECTION VIDEO CASSETTE RECORDER VCR 4500/VCR 4505 Sec. 2: Deck Mechanism Section I Standard Maintenance I Mechanism Alignment Procedures I Disassembly / Assembly of Mechanism I Deck Exploded Views I Deck Parts List TABLE OF CONTENTS Standard Maintenance ..............2-1-1 Service Fixture and Tools .
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 I: Replace Deck Periodic Service Schedule...
Cleaning Cleaning of ACE Head Clean the head with a cotton swab. Cleaning of Video Head Procedure Clean the head with a head cleaning stick or chamois 1.Remove the top cabinet. cloth. 2.Dip the cotton swab in 90% isopropyl alcohol and Procedure clean the ACE Head.
SERVICE FIXTURE AND TOOLS J-1-1, J-1-2 Ref. No. Name Part No. Adjustment J-1-1 Alignment Tape FL6A Head Adjustment of ACE Head J-1-2 Alignment Tape FL6N8 Azimuth and X Value Adjustment of ACE Head / (2 Head model) Adjustment of Envelope Waveform FL6NS8 (4 Head model) Guide Roller Adj.
MECHANICAL ALIGNMENT PROCEDURES Explanation of alignment for the tape to correctly run B. Method to place the Cassette Holder in the tape- starts on the next page. Refer to the information below loaded position without a cassette tape on this page if a tape gets stuck, for example, in the 1.
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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 Alignment Tape (FL6N8 --- 2 head model, FL6NS8 --- 4 head model)
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1-A. Preliminary/Final Checking and 4. If creasing or snaking is apparent, adjust the Tilt Alignment of Tape Path Adj. Screw of the ACE Head. (Fig. M6) Purpose: To make sure that the tape path is well stabilized. Azimuth Adj. Screw Symptom of Misalignment: If the tape path is unstable, the tape will be damaged.
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5. To shift the CTL waveform, press CH UP or CH 5. When Guide Rollers [2] and [3] (Refer to Fig. M3) DOWN button on the remote control unit. Then are aligned properly, there is no envelope drop make sure that the maximum output position of PB either at the beginning or end of track as shown in ±...
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1-D. Azimuth Alignment of Audio/Con- 2. When the tape has been curled up or bent, turn the trol/ Erase Head alignment screw to adjust the height of REV Post. (Refer to Fig. M11 and M13.) Purpose: To correct the Azimuth alignment so that the Audio/ Control/Erase Head meets tape tracks properly.
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;...
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REMOVAL INSTALLATION STEP START- REMOVE/*UNHOOK/ /LOC. PART ADJUSTMENT Fig. No. UNLOCK/RELEASE/ CONDITION UNPLUG/DESOLDER BT Arm DM2H, DM14H *(P-5) [33] [26] Loading Arm (SP) (+)Refer to Alignment [34] [26] DM2H, DM14H Assembly Sec.Page 2-5-1 Loading Arm (TU) (+)Refer to Alignment [35] [34] DM2H, DM14H Assembly...
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(S-1) (S-1) (L-1) (L-3) (L-2) (S-1A) (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.
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[11] (S-4A) (L-4) [49] (P-3) [13] [50] Removal of [11] [12] (L-12) 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 [27] When reassembling [10] and...
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Installation of [13] and [12] (S-5) [14] (S-6) [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.
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(C-1) turn [22] (S-8) [20] (L-6) [21] [19] Cap Belt Pin on [22] Installation position of Cap Belt [20] Cap Belt [27] Position of pin on [22] Fig. DM12H [19] View for A Fig. DM11H 2-4-7 U29PHSDA...
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Installation of [26] [26] (C-3) Position of Mode Lever when installed Pin of [33] Pin of [37] (S-9) Pin of [36] (L-8) [23] (L-7) Bottom View [24] (C-5) [26] (C-4) (C-2) [28] [27] [25] [29] [30] Align [26] and [27] as shown. First groove on [27] [27] First tooth on [47]...
ALIGNMENT PROCEDURES OF MECHANISM Alignment 1 The following procedures describe how to align the individual gears and levers that make up the tape load- Loading Arm (SP) and (TU) Assembly ing/unloading mechanism. Since information about the state of the mechanism is provided to the System Install Loading Arm (SP) and (TU) Assembly so that Control Circuit only through the Mode Switch, it is their triangle marks point to each other as shown in...
Comparison Chart of Models and Marks Ref. No. Mark Description Part No. WORM HOLDER(R) MK12 0VM204324 Model Mark B507 REEL WASHER MK9 5*2.1*0.5 0VM410058 VCR 4500 B508 S BRAKE SPRING(HI) MK12 0VM414899 VCR 4505 B513 P .S.W F 6*2.55*0.5 0VM402629A B514 SCREW RACK MK10 0VM411535 B516 REEL WASHER MK9 5*2.1*0.5...