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Parts List Section I Specifications I Alignment for Mechanism I Preparation for Servicing I Exploded views I Disassembly/Assembly of Mechanism I Parts List I Adjustment Procedures I Alignment Procedures of Mechanism I Schematic Diagrams I CBA’s VIDEO CASSETTE RECORDER 27C-450 SECAM...
MAIN SECTION VIDEO CASSETTE RECORDER 27C-450 Sec. 1: Main Section I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA’s TABLE OF CONTENTS Specifications................1-1-1 Important Safety Precautions.
SPECIFICATIONS Description Unit Minimum Nominal Maximum Remark 1. Video 1-1. Video Output (PB) Vp-p FL6A 1-2. Video Output (R/P) Vp-p SP Mode, 1-3. Video S/N Y (R/P) W/O Burst 1-4. Video Color S/N AM (R/P) SP Mode 1-5. Video Color S/N PM (R/P) SP Mode 1-6.
IMPORTANT SAFETY PRECAUTIONS Product Safety Notice I. Also check areas surrounding repaired locations. J. Be careful that foreign objects (screws, solder Some electrical and mechanical parts have special droplets, etc.) do not remain inside the set. safety-related characteristics which are often not evi- K.
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 How to Remove / Install Flat Pack-IC a. The output pin of the 3 pin Regulator ICs is indi- 1. Removal cated as shown. With Hot-Air Flat Pack-IC Desoldering Machine:. (1) Prepare the hot-air flat pack-IC desoldering Top View Bottom View machine, then apply hot air to the Flat Pack-IC...
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With Soldering Iron: (4) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply (1) Using desoldering braid, remove the solder from all soldering iron to center of the flat pack-IC and heat pins of the flat pack-IC.
2. Installation Instructions for Handling Semi-conductors (1) Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA Electrostatic breakdown of the semi-conductors may so you can install a replacement flat pack-IC more occur due to a potential difference caused by electro- easily.
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.
CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart (1): Identification (location) No. of parts in the figures (2): Name of the part This flowchart indicates the disassembly steps to gain (3): Figure Number for reference access to item(s) to be serviced. When reassembling, (4): Identification of parts to be removed, unhooked, follow the steps in reverse order.
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[7] Cylinder Shield Cylinder Assembly FE Head (S-7) SW507 AC Head LD-SW Assembly [6] Main CBA [5] Deck Assembly [5] Deck Assembly Cam Gear [6] Main CBA Hole Shaft (S-6) Hole LD-SW [6] Main CBA (S-6) Fig. 6 TOP VIEW From Capstan Motor From...
ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: "CBA" is an abbreviation for Head Switching Position Adjustment "Circuit Board Assembly." Purpose: NOTE: To determine the Head Switching point 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...
Video Block Diagram REC-VIDEO SIGNAL PB-VIDEO SIGNAL MODE: SP/REC MAIN CBA IC501 (OSD) IIC-BUS SDA SERVO/SYSTEM IIC-BUS SCL CONTROL BLOCK CHARACTER COLOR IC301 Q351 BUFFER (Y/C SIGNAL PROCESS) (DECK ASSEMBLY) SERIAL Y. DELAY DECORDER CYLINDER ASSEMBLY CL253 V(R)-1 VIDEO (R)-1 LUMINANCE V-COM HEAD...
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Power Supply Block Diagram CAUTION CAUTION ! NOTE : FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, Fixed voltage (or Auto voltage selectable ) power supply circuit is used in this unit. The voltage for parts in hot circuit is measured using If Main Fuse (F001) is blown, check to see that all components in the power supply REPLACE ONLY WITH THE SAME TYPE T1.6AL/250V FUSE.
FUNCTION INDICATOR SYMBOLS Note: 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 VEILLE FONCTION...
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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Main 1/6 Schematic Diagram 1-8-3 1-8-4 HE341SCM1...
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Main 3/6 Schematic Diagram 1-8-7 1-8-8 HE341SCM3...
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Main 4/6& Jack Schematic Diagram HE341SCM4 1-8-9 1-8-10...
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Main 5/6 Schematic Diagram CAUTION ! NOTE : CAUTION ! For continued protection against fire hazard, The voltage for parts in hot circuit is measured using 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 6/6 Schematic Diagram 1-8-13 1-8-14 HE341SCM6...
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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 BHE470F01014-C 1-8-19 1-8-20...
WAVEFORMS (TP301 of Main CBA) UPPER (TP502 of Main CBA) LOWER C-PB 10mV x 10 RF-SW 0.5V x 10 5msec (J23 of Main CBA) UPPER (TP502 of Main CBA) LOWER V-OUT 0.1V x 10 RF-SW 0.5V x 10 50usec (J23 of Main CBA) V-OUT E-E 10usec 50mV x 10...
IC PIN FUNCTION DESCRIPTIONS IC501( SERVO / SYSTEM CONTROL IC ) Signal Active Function Name Level “H” ≥ 4.5V, “L” ≤ 1.0V 26 OUT REC- Recording LED Control Signal Active Function Signal Name Level N.U. Not Used Input Signal from IN SC2-IN Pin 8 of SCART2 N.U.
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Signal Active Signal Active Function Function Name Level Name Level 83 OUT A-MUTE- Audio Mute Control SECAM or MESECAM COLOR- Signal (Mute = “H”) Chroma Video Input Signal at Super Impose CTL Frequency 84 OUT FF/REW- Characteristics N.U. Not Used Switching Signal (FF/ N.U.
LEAD IDENTIFICATIONS 2SC1815-BL(TPE2) BN1L4M-T 2SK3566 2SC1815-Y(TPE2) BN1F4M-T 2SC1815-GR(TPE2) BA1F4M-T 2SC2120-Y(TPE2) KTA1266(GR) KTC3203(Y) KTC3199(Y,GR,BL) 2SA1020(Y) 2SC2785(J.H.F) 2SA1015-GR(TPE2) KRA103M KRC103M KRA104M KTA1281(Y) G D S E C B E C B PT204-6B-12 MID-32A22 CAT24WC02JI LTV-817(B.C)-F BR24C02F-W EL817(A,B,C) RN1511(TE85R) CD4052BCSJX KTA1504GR-RTK BU4052BCF-E2 FMG4A T148 KTA1504Y-RTK TC4052BF(EL) KTC3875Y-RTK...
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DECK MECHANISM SECTION VIDEO CASSETTE RECORDER 27C-450 Sec. 2: Deck Mechanism Section I Standard Maintenance I Alignment for Mechanism I Disassembly/Assembly of Mechanism I Alignment Procedures of Mechanism TABLE OF CONTENTS Standard Maintenance..............2-1-1 Service Fixtures and Tools.
STANDARD MAINTENANCE Service Schedule of Components H: Hours : Check I: Change Deck Periodic Service Schedule Ref.No. Part Name 1,000 H 2,000 H 3,000 H 4,000 H Cylinder Assembly Loading Motor Assembly Pulley Assembly B587 Tension Lever Assembly AC Head Assembly B573,B574 Reel S, Reel T Capstan Motor...
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Cleaning Cleaning of Audio Control 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 audio control 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 Audio Control Head J-1-2 Alignment Tape FL6N8 Azimuth and X Value Adjustment of Audio Control (1 speed only) Head / Adjustment of Envelope Waveform FL6NS8 (2 speed only) Guide Roller Adj.Screwdriver...
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 center 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 (FL6NS8) Guide Roller Adj.
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1-A. Preliminary/Final Checking and 3. Check to see that the tape runs without creasing at Alignment of Tape Path Take-up Guide Post [4] or without snaking between Guide Roller [3] and AC Head. (Fig. M3 and M5) Purpose: 4. If creasing or snaking is apparent, adjust the Tilt To make sure that the tape path is well stabilized.
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1-D. Azimuth Alignment of Audio/Con- 6. Press CH DOWN button on the unit until the CTL waveform has shifted from its original position (not trol/ Erase Head the position achieved in step 5, but the position of Purpose: CTL waveform in step 4) by approximately -2msec. To correct the Azimuth alignment so that the Audio/ Make sure that the envelope is simply attenuated 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 on page 1-5-1.) 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 Loading Arm (SP) (+)Refer to Alignment [34] [26] DM2,DM14 Assembly Sec.Pg.2-4-8 Loading Arm (TU) (+)Refer to Alignment [35] [34] DM2,DM14 Assembly Sec.Pg.2-4-8 M Brake (TU) Assembly [36] [16],[26] DM1,DM15 (HI)
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(S-1) (S-1) (L-1) (L-3) (L-2) (S-1A) (P-1) Fig. DM5 [49] Fig. DM3 [50] Pin D (L-12) Pin C Pull up Slide Pin A Pin B Slot A (S-2) Slots B Slot A First, while pushing the locking tab as shown in the right, slide and pull up the right side on [2] to release Pin A and Pin B from the slots A.
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(S-4) (S-5) [14] (S-6) [15] Desolder from bottom (S-3) Lead with White Stripe Belt View for A Fig. DM7 Fig. DM9 Adj. Screw [11] [17] (L-4) (L-5) (P-3) [16] [13] [18] [12] (P-4) [10] (P-2) (S-7) Pin of [12] Pin of [10] Fig.
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[26] (S-8) (C-3) (S-9) (L-8) [23] (L-7) [24] (C-5) (C-4) (C-2) [28] [25] [29] [30] [19] Cap Belt [27] Fig. DM11 turn (C-1) [22] [20] (L-6) [31] [21] Position of Mode Lever when installed Pin of [37] Pin of [33] Pin of [36] Bottom View [26]...
ALIGNMENT PROCEDURES OF MECHANISM The following procedures describe how to align the Alignment 1 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...
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EXPLODED VIEWS AND PARTS LIST SECTION VIDEO CASSETTE RECORDER 27C-450 Sec. 3: Exploded views and Parts List Section I Exploded views I Parts List TABLE OF CONTENTS Exploded Views ............... . 3-1-1 Mechanical Parts List.
MECHANICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a ! have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper ser- vicing.
ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE: Products marked with a ! Ref. No. Description Part No. have special characteristics important to safety. Before C025 CERAMIC CAP .(AX) X K 5600pF/16V CCA1CKT0X562 replacing any of these components, read carefully the C026 ELECTROLYTIC CAP .
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Ref. No. Description Part No. Ref. No. Description Part No. C317 ELECTROLYTIC CAP . 47µF/6.3V M H7 CE0KMAVSL470 CHIP CERAMIC CAP . F Z 0.1µF/25V or CHD1EZ30F104 C318 ELECTROLYTIC CAP . 1µF/50V M H7 CE1JMAVSL1R0 CHIP CERAMIC CAP . FZ Z 0.1µF/50V CHD1JZ3FZ104 C319 ELECTROLYTIC CAP .
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Ref. No. Description Part No. Ref. No. Description Part No. C510 ELECTROLYTIC CAP . 22µF/10V M H7 CE1AMAVSL220 CHIP CERAMIC CAP . FZ Z 0.1µF/50V CHD1JZ3FZ104 C511 ELECTROLYTIC CAP . 100µF/6.3V H7 CE0KMAVSL101 C856 CHIP CERAMIC CAP . CH J 180pF/50V or CHD1JJ3CH181 C512 CHIP CERAMIC CAP .
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Ref. No. Description Part No. Ref. No. Description Part No. LED SIR-563ST3F Q QPQQS1R563ST Q052 RES. BUILT-IN TRANSISTOR KRC103M or NQSZ0KRC103M D553 SWITCHING DIODE 1N4148M or NDTZ01N4148M RES. BUILT-IN TRANSISTOR BA1F4M-T QQSZ00BA1F4M SWITCHING DIODE 1SS133(T-77) QDTZ001SS133 Q054 TRANSISTOR KTC3203(Y) or NQSY0KTC3203 D561 LED(RED) 204HD/E...
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Ref. No. Description Part No. Ref. No. Description Part No. CARBON RES. 1/4W J 680 Ω TRANSISTOR 2SC2785(H) or QQSH02SC2785 R068 RCX4JATZ0681 CARBON RES. 1/6W J 8.2k Ω or TRANSISTOR 2SC2785(F) or QQSF02SC2785 R069 RCX6JATZ0822 CARBON RES. 1/4W J 8.2k Ω TRANSISTOR 2SC1815-Y(TPE2) or QQSY02SC1815 RCX4JATZ0822...
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Ref. No. Description Part No. Ref. No. Description Part No. SW508 TACT SWITCH KSM0611B SST0101HH004 C113 CHIP CERAMIC CAP . B K 2200pF/50V CHD1JK30B222 SW509 TACT SWITCH KSM0614B or SST0101HH013 C115 ELECTROLYTIC CAP . 100µF/16V M H7 CE1CMAVSL101 TACT SWITCH SKQSAF001A or SST0101AL041 C116 ELECTROLYTIC CAP .
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SENSOR CBA Ref. No. Description Part No. SENSOR CBA 0VSA13549 Consists of the following TRANSISTORS Q504 PHOTO TRANSISTOR PT204-6B-12 or NPWZT2046B12 PHOTO TRANSISTOR MID-32A22F NPWZ1D32A22F Q505 PHOTO TRANSISTOR PT204-6B-12 or NPWZT2046B12 PHOTO TRANSISTOR MID-32A22F NPWZ1D32A22F 20030805 3-3-8 HE341EL...
DECK PARTS LIST NOTE: Ref. No. Description Part No. Four different, but interchangeable, types of B558 B410 PINCH ARM(A) ASSEMBLY(4) MK12 or 0VSA13572 (LOADING MOTOR) may be installed in these models. PINCH ARM(A) ASSEMBLY(5) MK12 0VSA13788 Please confirm B558 (LOADING MOTOR) type by a B411 PINCH SPRING MK12 0VM414644...
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Ref. No. Description Part No. L1151 SCREW, SEMS M3X4 PAN HEAD + or CPM33040 SCREW, SEMS M2.6X4 PAN HEAD+ CPM39040 L1191 SCREW, S-TIGHT M2.6X8 WASHER HEAD+ GCMS9080 L1321 SCREW, S-TIGHT M3X6 BIND HEAD+ GBMS3060 L1341 SCREW, P-TIGHT M2X6 PAN HEAD+ GPMP2060 L1406 AC HEAD SCREW MK9...