VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A SERVICE MANUAL S92P4VC-AA350 VIDEO CASSETTE RECORDER VC-AA350A/L/M (AA350A/L/M/W,AA360A,AA370A) VC-AA352W VC-AA360A,AA370A VC-AA550A/L/W (AA352W,AA550A/L/W,AA560A,AA570A) VC-AA560A,AA570A MODELS In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A PRECAUTIONS IN PART REPLACEMENT When servicing the unit with power on, be careful to the section marked white all over. This is the primary power circuit which is live. When checking the soldering side in the tape travel mode, make sure first that the tape has been loaded and then turn over the PWB with due care to the primary power circuit.
Video recording system: Rotary, slant azimuth two heads helical scan system Video signal: PAL colour or monochrome (CCiR system B/G) signals Recording/playing time: 240 min max. with SHARP E-240 tape (PAL: SP mode) 480 min max. with SHARP E-240 tape (PAL: LP mode) 720 min max.
VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 2. DISASSEMBLY AND REASSEMBLY 2-1 DISASSEMBLY OF MAJOR BLOCKS (VC-AH975W) : Remove 2 screws 1. TOP CABINET : Remove 2 screws 2 and 7 clips 3. FRONT PANEL : Remove 2 screws 4, 1 screw 5. MECHANISM/...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 2-3 CARES WHEN REASSEMBLING Rotate the flange of worm gear by using thin stick. INSTALLING THE CASSETTE HOUSING CW • • • Loading direction When the cassette housing is installed on the mechanism, CCW • • • Ejection direction the initial setting is essential condition.
VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 3. FUNCTION OF MAJOR MECHANICAL PARTS (TOP VIEW) Function Function Full erase head Reverse guide lever ass’y Supply pole base ass’y Reel relay gear Tension arm Take-up reel disk Idler wheel ass’y Pinch roller lever ass’y Open guide Drum ass’y...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A FUNCTION OF MAJOR MECHANICAL PARTS (BOTTOM VIEW) Function Function Syncro Gear Clutch lever Master cam Limiter pulley ass’y Capstan D.D. motor Shifter Reel belt...
VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4. ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS The explanation given below relates to the on-site general service (field service) but it does not relates to the adjustment and replacement which need high-grade equipment, jigs and skill. For example, the drum assembling, replacement and adjustment service must be performed by the person who have finished the technical courses.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-2 MAINTENANCE CHECK ITEMS AND EXECUTION TIME Perform the maintenance with the regular intervals as follows so as to maintain the quality of machine. 1000 1500 2000 Possible symptom Maintained Remarks hrs. hrs. hrs. hrs. encountered Parts Abnormal rotation or significant Guide roller ass’y...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-3 REMOVING AND INSTALLING THE CAS- 2. Install in the reverse order of removal. SETTE HOUSING Notes • Removal 1. In the case when you use the magnet screw driver, never 1. In the cassette removing mode, remove the cassette.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-5 REEL DISK REPLACEMENT AND HEIGHT Notes: CHECK 1. When installing the reel disk, take due care so that the • Removal tension band ass'y is not deformed and grease does no 1. Remove the cassette housing control assembly.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Note: Notes: Whenever replacing the reel disk, perform the height check- 1. Hold the torque gauge by hand so that it is not moved. ing and adjustment. 2. Do not keep the reel disk in lock state. Do not allow long- time measurement.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Notes: 4-9 CHECKING AND ADJUSTMENT OF TAKE- 1. Hold the torque gauge by hand so that it is not moved. UP TORQUE IN VIDEO SEARCH REWIND 2. Do not keep the reel disk in lock state. Do not allow long- MODE time measurement.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-10 CHECKING THE VIDEO SEARCH REWIND BACK TENSION • Remove the cassette housing control assembly. • After short-circuiting between TP803 and TP802 Tension gauge Pinch roller provided at main PWB, plug in the power cord. 900 - 1,200gf •...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A • Checking Tension pole adjustment driver adjusting direction 1. Set a cassette tape, push the REC button to place the unit in the SP record mode. Now check the tension pole position. 2. Visually check to see if the position of the tension pole is + 0.5...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A • Adjustment • Checking the brake torque at the take-up side 1. If the indication of torque cassette meter is lower than the setting, shift the tension spring engagement to the part A. Torque gauge 2. If the indication of torque cassette meter is higher than the setting, shift the tension spring engagement to the part B.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 3. Align the left end of gear of A/C head arm with the 4-15 REPLACEMENT OF A/C (AUDIO/CONTROL) punched mark of chassis, tentatively tighten the screws HEAD 1 so as to ensure smooth motion of A/C head arm.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-16 A/C HEAD HEIGHT ROUGH ADJUSTMENT 4-17 ADJUSTMENT OF TAPE DRIVE TRAIN 1. Tape run rough adjustment 1 Check and adjust the position of the tension pole. • Setting (See 4-12.) 2 Check and adjust the video search rewind back Azimuth screw tension.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Notes: 1. Previously set the tracking control in the center position, and adjust the ATR signal waveform to maximum with X value adjustment nut. Thereby the tape run rough ad- justment is facilitated. 2. Especially the outlet side ATR signal waveform must have higher flatness.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 3 Next, press the tracking button (+), (–) and change the ATR signal waveform from max to min and from PB ATR min to max. At this time adjust the height of supply Signal and take-up side guide roller with the adjustment driver (JiGDRiVERH-4) so that the ATR signal wave- form changes nearly parallel.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-19 REPLACEMENT OF DRUM D.D. MOTOR 4-18 REPLACEMENT OF THE CAPSTAN D.D. 1. Set the ejection mode. (DIRECT DRIVE) MOTOR 2. Withdraw the main power plug from the socket. • Remove the mechanism from the set. • Removal (Perform in numerical order.) •...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-20 REPLACING THE UPPER AND LOWER 4-21 ASSEMBLING OF PHASE MATCHING DRUM ASSEMBLY MECHANISM COMPONENTS • Assemble the phase matching mechanism compo- • Replacement (Perform in the numerical order) nents in the following order. 1 Remove the motor as stated in 4-19 D.D. motor replace- 1.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 1. Make sure that the loading arm T and S are at the Phase- 4-22 INSTALLING THE SHIFTER Matching point as shown below 2. Fix the shifter position setting part to the roading arm T Drum position setting part as shown in figure 3.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-23 INSTALLING THE MASTER CAM (AT 4-24 REPLACEMENT OF LOADING MOTOR • Removal REAR SIDE OF MECHANISM CHASSIS) 1. Make sure beforehand that the shifter is at initial posi- Apply grease tion. (Right side from bottom view) *Apply grease to 2.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4-25 ASSEMBLY OF CASSETTE HOUSING 1. Proof lever Proof lever spring and Holder R MSPRD0215AJFJ *Proof lever spring fixing direction designated. Figure 4-41. 2. 0pen lever, Sensor Plate and Frame R out side out side inside bottom...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 4 Frame R, Frame L, Drive Arm R, Drive Arm L, Upper Plate. LANGF9661AJFW Top surface should be free from scratches or soil. When assemble drive lever to frame R, make sure the hole synchronize. Figure 4-44.
VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 5. ELECTRICAL ADJUSTMENT Notes: • Before the adjustment: Electrical adjustments discussed here are often required after replacement of electronic components and mechani- cal parts such as video heads. Check that the mechanism and all electric components are in good working condition prior to the adjustments, otherwise adjustments can not be completed.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A SERVO CIRCUIT ADJUSTMENT ADJUSTMENT OF PAL SYSTEM SP/LP/EP SLOW TRACKING PRESET ADJUSTMENT OF HEAD SWITCHING POINT Measuring Colour TV monitor Measuring Dual-trace oscilloscope instrument instrument Colour TV monitor Mode Playback Mode Playback Cassette Self-recorded tape Cassette Alignment tape...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 5. Make for a moment short-circuit TP801, located at the ADJUSTMENT OF PAL SYSTEM FV (False front side on the main PWB. Vertical Sync) OF STILL PICTURE Be sure that all the LCD display light up when press the TEST mode.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A REPLACEMENT OF IC710(E PROM) Servicing precautions When the IC710(E PROM) has been replaced, make the following reprogramming. Depending on models, the IC710(E PROM) has been factory adjusted for it’s memory function. It’s therefore necessary to reprogram the memory function for the model in question.
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A SCHEMATIC DIAGRAM IMPORTANT SAFETY NOTICE: BE SURE TO USE GENUINE PARTS FOR SE- CURING THE SAFETY AND RELIABILITY OF THE SET. å " AND PARTS PARTS MARKED WITH " SHADED (IN BLACK) ARE ESPECIALLY IMPOR- TANT FOR MAINTAINING THE SAFETY AND PROTECTING ABILITY OF THE SET.
VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A 10. REPLACEMENT PARTS LIST Ref. No. Part No. Description Code Ref. No. Part No. Description Code PARTS REPLACEMENT MISCELLANEOUS PARTS S881 QSW-K0004AJZZ+ V Switch, PLAY S882 QSW-K0004AJZZ+ V Switch, STOP Parts marked with " å " are important for maintaining the safety of...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Ref. No. Part No. Description Code Ref. No. Part No. Description Code Q711 VS2PD601AR/-1Y V 2PD601AR CAPACITORS å Q901 VS2SK2848//-1 V 2SK2848 C101 VCKYCY1HB221KS V 220p 50V Ceramic å Q902 VS2SC2001LK-1+ V 2SC2001LK C103 VCEA9A0JW227M+ V 220 6.3V Electrolytic...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Ref. No. Part No. Description Code Ref. No. Part No. Description Code C726 VCKYCY1HB102KS V 1000p 50V Ceramic C319 VCCCCY1HH100DS V 10p 50V Ceramic C728 VCKYCY1HF103ZS V 0.01 50V Ceramic (AA370A,AA550A/L/W,AA560A,AA570A) C729 VCKYCY1HB222KS V 2200p 50V Ceramic...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Ref. No. Part No. Description Code Ref. No. Part No. Description Code R108 VRS-CY1JF000JS 1/16W Metal Oxide AA R620 VRS-CY1JF153JS V 15k 1/16W Metal Oxide AA (AA550A/L/W,AA560A,AA570A) R621 VRD-RA2EE4R7JY V 4.7 1/4W Carbon R111 VRS-CY1JF153JS V 15k 1/16W Metal Oxide AA...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Ref. No. Part No. Description Code Ref. No. Part No. Description Code R811 VRS-CY1JF183JS V 18k 1/16W Metal Oxide AA P501 QPLGZ0409REZZ V Plug, 4pin (AA550A/L/W,AA560A) R813 VRS-CY1JF272JS V 2.7k 1/16W Metal Oxide AA P501 QPLGZ0809REZZ V Plug, 8pin (AA570A)
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Ref. No. Part No. Description Code Ref. No. Part No. Description Code C264 VCKYCY1HF103ZY V 0.01 50V Ceramic R263 VRS-CY1JF272JY V 2.7k 1/16W Metal Oxide AA (AA550A/L/W,AA560A,AA570A) (AA550A/L/W,AA560A,AA570A) C265 VCEA9M0JW476M+ V 47 6.3V Electrolytic R264 VRS-CY1JF102JY V 1k...
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VC-AA350A/L/M/W VC-AA352W,AA360A,AA370A VC-AA550A/L/W,AA560A,AA570A Ref. No. Part No. Description Code Ref. No. Part No. Description Code MECHANISM CHASSIS PARTS SCREW, NUTS AND WASHERS LBNDK1021AJZZ V Tension Band Ass’y XBPSD26P08000 V 2.6P+8S A/C Head LBOSZ1022AJZZ V Tension Arm Boss LX-BZ3096GEFD J Tilt Adjusting Screw...
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V LCD Indication Plate (AA360A,AA370A,AA560A,AA570A) 500-5 HiNDP2237AJSB V LCD Indication Plate (AA350A/L/M/W,AA352W) 500-5 HiNDP2237AJSC V LCD Indication Plate (AA550A/L/W) 500-6 GCOVA2214AJZZ V R/C Cover 500-7 MSPRD0105AJFJ V Cassette Flap Spring 500-8 HBDGB1010AJSA V SHARP Badge (AA360A,AA370A,AA560A,AA570A) 500-8 HBDGB1010AJSB V SHARP Badge (AA350A/L/M/W,AA352W,AA550A/L/W)
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