Sony operating instructions video cassette recorder slv-ez727az pal ntsc, slv-ez725az pal ntsc4.43, slv-ez424az pal ntsc4.43, slv-ez121az pal ntsc4.43 (68 pages)
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UHF B21 - B69 Power consumption RF output signal 17 W UHF I21 - 69 CH 5W (standby)(SLV-E120AE/E220 Series) Aerial out 6W (standby)(Except SLV-E120AE/E220 Series) 75-ohm asymmetrical aerial socket Operating temperature 5°C to 40°C System (EXCEPT SLV-E220UY/E280UX) Storage temperature Channel coverage –20°C to 60°C...
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LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. – 2 –...
3-7-1. Capstan Motor ..........5-14 CP-1 Board (VA-A) Video & Audio Circuit Diagram 3-7-2. Capstan Brake Assembly ........5-14 (SLV-E120AE & E220 Series) ........4-9 3-8. Loading Motor Assembly and CP-1 Board (VA-A) Video & Audio Circuit Diagram Worm Gear Assembly ..........5-15 (SLV-E280UX) ..............
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Section Title Page ______ ____ ____ 3-12-4. T Soft Brake Assembly, Take Up Reel Assembly, T Reel Gear ........5-19 3-13. Brakes ..............5-19 3-13-1. S Brake Assembly, T Brake Assembly, T Brake ACT Slide ......5-19 3-13-2. Brake Control Lever and Brake ACT Lever Assembly ............
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SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2 SECTION 1 GENERAL This section is extracted from SLV-E280UX instruction manual.
SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2 SECTION 2 DISASSEMBLY 1-1. REMOVAL OF CABINET, MECHANISM UNIT, AND MAIN BOARD 2. Remove the screw 4 at the back of the chassis. REMOVING THE CABINET PARTS (Fig. 1-1-1 ) 3. Remove the red screw 5 in the chassis, remove the red 1.
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Terminal Board Holder Tray Lock Lever Lid Opener Lever TM-2 PWB TM-1 PWB Chassis Cassette Tray Fig. 1-1-2 VP-1 PWB Assembly Mechanism Main Unit CP-1 PWB Assembly TM-2 PWB TM-1 PWB Clamps (D) Chassis Fig. 1-1-3...
1-2. TEMPORARILY SETTING UP AND CONNECTING CP-1 PWB ASSEMBLY The following is an example of how to place and connect the main board without a jig, when repairing the CP-1 PWB assembly. 1. Place the mechanism unit and main board up side down 2.
SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2 SECTION 5 ADJUSTMENTS 1. MAINTAINING AND CHECKING THE MECHANISM 1-1. REGULAR CHECKS AND NOTE: OIL AND GREASE MAINTENANCE ITEMS • Always use the specified brands of oil and grease. If you To obtain full function and maximum performance from...
1-2. SERVICE TOOLS 1-2-1. SERVICE TOOLS NOTES ON ALIGNMENT TAPES Select a PAL or NTSC alignment tape from the list below, according to the transmission system of the VCR you are repairing. PAL: For models with 625 scanning lines and a field frequency of 50Hz NTSC: For models with 525 scanning lines and a field frequency of 60Hz Tool No.
1-2-2. Using the Relay Cable (VHJ-0106) The mechanism can be repaired without using the relay cable (VHJ-0106). As shown in Fig. 1-3-1, the relay cable (VHJ-0106) is a tool used for relay between the CP-1 PWB VM-1 (VP-1) PWB assembly and mechanism unit. assembly When connecting it, take note of the pin number of the connector.
2-2. AN OVERVIEW OF THE MECHANISM MODES 2-2-1 . MECHANISM MODE SWITCHING TABLE NOTE: The letters and figures enclosed in circles in the mechanism mode column are the codes on the crescent slide. Mechanism mode The principal mode-switching states of the mechanism DATA EJECT E CASSETTE OUT...
2-2-2. MOVEMENT CHECK LIST FOR THE MAIN PARTS OF THE MECHANISM (S): Strength (W): Weakness Mechanism mode Principal parts T brake assembly ON/OFF S brake assembly OFF OFF ON/OFF T soft brake assembly S soft lever BT lever assembly OFF OFF BT spring OFF OFF ON(W) ON(W)
3. DISASSEMBLING THE MAIN PARTS OF THE MECHANISM Left side POINTS TO NOTE • When fitting the parts of the mechanism, refer to the ‘‘Assembly Notes’’, and proceed in the reverse of dis- Bottom side assembly order. • Dis-assembly and assembly should be carried out in EJECT mode unless a movement mode is explicitly Motor (+) wire specified.
3-2. MECHANISM UNIT 3-3.CASSETTE DRIVE MECHANISM (See Figs. 3-2-1 and 3-2-2) 3-3-1 . CASSETTE MECHANISM ASSEMBLY 1) Remove the top cover, bottom cover and front cabinet (See Figs.3-3-1 and 3-3-2) assembly. 2) Unplug the flat cable 1 from the VM-1/VP-1 PWB 1) Put the VCR into EJECT mode.
3-3-2. CASSETTE DRIVE GEAR (See Fig. 3-3-3) 3-3-3. DOOR OPENER, UNDER FRAME AND 1) Refer to section 3-3-1 and remove the cassette mecha- STAND L (See Fig. 3-3-4) nism assembly. 1) Remove the cassette mechanism assembly, referring to 2) Remove clamps 1 and 2, then remove the gear holder section 3-1.
3-3-4. START RACK GEAR AND FRONT RACK 3-4. CLEANER ROLLER ASSEMBLY GEAR (See Figs. 3-3-5 and 3-3-6) (See Fig. 3-4-1 ) 1) Remove the mechanism unit, referring to section 3-2. 1) Remove the clamp 1 and take out the cleaner lever 2. 2) Remove the cassette mechanism assembly, referring to When you do this, be careful not to bend the plastic section 3-3-1.
3-5.CYLINDER (DRUM) ASSEMBLY NOTES: 1. When carrying out assembly, the CH-1 head on the upper cylinder assembly (upper drum) 4 and the lower 3-5-1. UPPER CYLINDER ASSEMBLY cylinder assembly (lower drum) 6 must be aligned. The (UPPER DRUM) CH-1 head on the upper cylinder assembly 4 bears a (See Figs.
3-5-2. CYLINDER MOTOR (ROTOR AND STATOR) 3-5-3. CYLINDER ASSEMBLY (See Fig. 3-5-6) (See Fig. 3-5-5) 1) Refer to sections 3-5-3, and remove the cylinder unit, the rotor, and the stator. 1) Refer to section 3-2 and remove the mechanism unit. 2) Remove the three screws 1 and the cylinder assembly 2) Remove the screw 1 and remove the cylindere arth assembly 2 .
3-6. FE HEAD AND ACE HEAD 3-6-2. FULL ERASE HEAD (See Fig.3-6-2) 1) Unplug the connector from the full erase head 1. 2) Remove the screw 2 and the full erase head 1. 3-6-1. AUDIO R/P HEAD ASSEMBLY (ACE HEAD) (See Fig.
3-7.CAPSTAN MOTOR 3-7-2. CAPSTAN BRAKE ASSEMBLY (See Fig. 3-7-2) 1) Remove the spring 1. 3-7-1. CAPSTAN MOTOR (See Fig.3-7-1) 2) Remove the clamp 2, then remove the capstan brake 1) Refer to section 3-2. then remove the mechanism unit. assembly 3. 2) Remove the two screws 2, then remove the harness mounting 1.
3-8. LOADING MOTOR ASSEMBLY AND 3-9. PINCH ROLLER PRESSURE WORM GEAR ASSEMBLY MECHANISM (See Fig. 3-8-1 ) 3-9-1. PINCH ROLLER LEVER ASSEMBLY 1) Refer to section 3-2 and remove the mechanism unit. (See Fig. 3-9-1) 2) Remove the soldering on the lead wires 2 of the 1) Remove the clamp 1, then remove the pinch lift loading motor assembly from the MC-1 PWB assembly.
3-9-2. PINCH LIFT CAM AND PINCH CAM GEAR (See Figs. 3-9-2 and 3-9-3) !¡ Arrow on MC-1 PWB 1) Refer to section 3-2 and remove the mechanism unit. assembly When you do this, make sure the mechanism is in EJECT mode. 2) Refer to section 3-9-1 and remove the pinch roller lever 0 Positioning marks assembly.
3-10.L GUIDE LEVER ASSEMBLY AND 3-11.BT LEVER ASSEMBLY LOAD LEVER ASSEMBLY (See Fig. 3-11-1 ) (See Figs. 3-10-1 ) 1) Refer to section 3-2 and remove the mechanism unit. 2) Refer to section 3-3-1 and remove the cassette mecha- 1) Refer to section 3-3 and remove the cassette mecha- nism assembly.
3-12.REEL DRIVE MECHANISM 1 Screws Part A 3-12-1. REEL BELT, REEL PULLEY, FRICTION GEAR ASSEMBLY AND CLUTCH CHANGE LEVER (See Fig. 3-12-1) 1) Refer to section 3-2 and remove the mechanism unit. 3 Hole 2) Remove the reel belt 1 from the reel pulley 2. 3 Hole 3) Take off the washer 3 and remove the reel pulley 2.
3-12-4. T SOFT BRAKE ASSEMBLY, TAKE UP 3-13. BRAKES REEL ASSEMBLY, T REEL GEAR (See Fig. 3-12-4) 3-13-1. S BRAKE ASSEMBLY, T BRAKE ASSEM- 1) Remove the T soft spring 1. BLY, T BRAKE ACT SLIDE (See Fig. 3-13-1) 2) Remove the clamp 2, then remove the T soft brake 1) Refer to section 3-3-1 and remove the cassette mecha- assembly 3.
3-13-2. BRAKE CONTROL LEVER AND BRAKE 3-13-3. S BRAKE ACT SLIDE AND BT SPRING ACT LEVER ASSEMBLY (See Fig. 3-13-2) LEVER ASSEMBLY 1) Refer to section 3-2 and remove the mechanism unit. (See Figs. 3-13-3 and 3-13-4) 2) Refer to section 3-15 and remove the wheel gear 2. 1) Refer to section 3-16 and remove the crescent slide.
3-14.GUIDES 3-14-2. S AND T INCLINE MOUNTING ASSEMBLIES (See Fig. 3-14-2) 1) Refer to section 3-2 and remove the mechanism unit. 3-14-1. GUIDE ROLLER ASSEMBLY 2) Refer to section 3-4 and remove the cleaner lever. (See Fig. 3-14-1) 3) Remove the four screws 5 and take off the two catcher 1) Unscrew the two screws 1.
3-15. WHEEL GEAR 2, MAIN CAM AND 3 Washer MODE SWITCH (See Figs. 3-15-1 and 3-15-2) 6 Mode switch 1) Refer to section 3-2 and remove the mechanism unit. 5 Screw When you do this, make sure the mechanism is in EJECT mode.
3-16.CRESCENT SLIDE !¡ Screw (See Figs. 3-16-1 and 3-16-2) 1) Refer to section 3-2 and remove the mechanism unit. When you do this, make sure the mechanism is in !™ Crescent EJECT mode. mounting 3 Crescent slide 2) Refer to section 3-3-1 and remove the cassette mecha- nism assembly.
3-17. S LOAD GEAR, T LOAD GEAR, (T side) Apply S LOAD LEVER ASSEMBLY AND grease here T LOAD LEVER ASSEMBLY (See Figs. 3-17-1. 3-17-2 and 3-17-3) 1) Refer to section 3-16 and remove the crescent slide. 2) Refer to section 3-14-2 and remove the S and T incline mounting assemblies.
3-18.TAPE SENSORS, REEL SENSOR 1 Photo diode AND EP SW LEVER (reel sensor) 3-18-1 TAPE TOP SENSOR AND TAPE END SENSOR (See Fig. 3-18-1) Mounting shaft for 1) Refer to section 3-2 and remove the mechanism unit. take up reel 2) Refer to section 3-3-1 and remove the cassette mecha- assembly nism assembly.
4. MECHANISM CHECKS AND Make holes with Dummy cassette ADJUSTMENTS roughly the same tape diameter as the reel. 4-1. REEL TABLE TORQUE CHECK 1) With the power switch turned OFF, stick black vinyl tape over the photo diodes of the tape sensors. Then turn the power switch ON.
4-3. TAPE PATH ADJUSTMENT 4-3-2. LOAD LEVER ASSEMBLY HEIGHT ADJUSTMENT (See Fig. 4-3-2) In normal circumstances, the tape path system does not 1. Refer to sections 3-9-2, and remove the opener need to be adjusted. However, after removing or replacing mountIng .
4-3-3. GUIDE ROLLER HEIGHT ADJUSTMENT Pressed Not pressed (See Figs. 4-3-3 and 4-3-4) too far far enough Normal 1) Play the Alignment Tape (NTSC: VHJ-0006, PAL: VHJ- 0009) and check that the envelope waveform is at its maximum at the tracking centre. Then, after loosening the S guide roller and the T guide roller by rotating them anticlockwise, tighten them in turn until the envelope waveform becomes flat.
4-3-4. AUDIO R/P HEAD (ACE HEAD) HEIGHT (2) Horizontal position adjustment (See Fig. 4-3-6) ADJUSTMENT, AZIMUTH ADJUSTMENT 1) Play the alignment tape (NTSC: VHJ-0006, PAL: VHJ- 0009). AND HORIZONTAL POSITION ADJUST- 2) Press the tracking buttons (channel + and channel – ) MENT simultaneously and set the tracking to the centre.
4-3-5. CHECKING AFTER ADJUSTMENT 1) Play the alignment tape (NTSC:VHJ-0006, PAL:VHJ-00 09) and check that the envelope waveform is activated immediately and that there are no fluctuations in the envelope waveform or the audio output waveform. 2) Load a cassette tape (NTSC:T-120, PAL: E-180) and use it to record and replay.
SELF-DIAGNOSIS DISPLAY This unit displays the diagnosis contents of abnormalities and the mechanism mode on its display panel in 2-digit numbers. These display shows the outline of the problems. Use it as a reference when servicing the unit. 1. Self-Diagnosis Contents and Mechanism Mode Display •...
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Mechanism Operations and Problem Main Possible Cause State After Occurrence Front unloading cannot be performed • The cassette drive mechanism is Front loads and shifts to the STOP or when ejecting the cassette. faulty . INITIAL mode. (Front loading can be pertormed.) •...
2. ELECTRICAL ADJUSTMENT VCR PRESETTING This VCR need three basic presetting by using the menus displayed on-screen. After all connection have been made, then follow steps 1 to 3 to preset the VCR. The three presetting steps will be displayed in sequence on TV screen. The setting are entered with the remote control. Turn on the VCR 1.
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TP183 TP182 (SW-P) (ENV.) VP-1 PWB Assembly Fig. 2-1-2 Note: • Self-recording means “Record any broadcasting or video signal and play back the just-recorded portion.” 2-1-3. SWITCHING POSITION ADJ. Measuring Point Measuring Equipment Adj. Condition TPIO1 Oscilloscope PLAY mode (VIDEO OUT) Alignment tape TP183 (SW-P) (VHJ-0009 or...
2-2. VIDEO CIRCUIT RELAY JIG 2-2-1 .TEST EQUIPMENT AND STANDARDS REQUIRED Color Bar Signal Generator PAL Color bar signel with 100% white level (EBU color bar signel) Oscilloscope Vertical sensitivity : 5 mV/DIV, external trigger Bandwidth : more than 10 MHz Oscilloscope Probe Input capacity : less than 25 pF (10:1)
2-3. IF CIRCUIT ADJUSTMENT • In this model, the circuits of the TUNER, IF, and RF Note: The 3 in tuner dose not need any adjustments, converter have been made into one. Therefore, should because precise adjustments were down before one circuit malfunction, the whole unit must be replaced.
SLV-E120AE/E220AE/UX/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2 SECTION 7 EXPLODED VIEWS NOTE : Items marked “ * ”are not stocked since they are -XX, -X mean standardized parts, so they may seldom required for routine service. Some delay The CP-A board and CP-1 board have some difference from the original one.
SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2 SECTION 8 CP-A ELECTRICAL PARTS LIST NOTE : SEMICONDUCTORS Due to standardization, replacements in the In each case, u : µ , for example : The components identified by mark ! parts list may be different from the parts speci- uA..