Sharp VC-A582U Service Man Download Page 66

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Ref. No.

Part No.

★

Description

Code

Ref. No.

Part No.

★

Description

Code

VC-A582U
VC-A582U(A)
VC-H982U

DIODES AND LED’S (Continued)

D702

RH-DX0475CEZZ V

Diode

D706

RH-PX0252GEZZ

Supply Reel Sensor

D707

RH-PX0252GEZZ

Take-up Reel Sensor

D708

RH-PX0253GEZZ

CAM SW A

D709

RH-PX0253GEZZ

CAM SW B

D801

RH-DX0475CEZZ V

Diode

D902

VHD10ELS4//-1

Diode

D903

RH-DX0475CEZZ V

Diode

D904

RH-DX0475CEZZ

Diode

D905

VHD10ELS4//-1

Diode

D906

VHD15DF1FC/1E

Diode

D907

VHD10ELS4//-1

Diode

D908

VHD1S40////-1

Diode

D909

VHD10ELS4//-1

Diode

D911

RH-EX0601GEZZ

Zener Diode

D912

RH-DX0475CEZZ

Diode

D914

RH-EX0613GEZZ

Zener Diode

D915

RH-DX0475CEZZ

Diode

D917

RH-EX0619GEZZ

Zener Diode

D918

VHD10ELS4//-1

Diode

D921

VHDRL1N4004-1

Diode

D922

VHDRL1N4004-1

Diode

D923

VHDRL1N4004-1

Diode

D925

VHDRL1N4004-1

Diode

D951

RH-EX0677GEZZ

Zener Diode

D952

RH-EX0601GEZZ

Zener Diode

D957

VHD1S40////-1

Diode

D962

VHDRL1N4004-1

Diode

D963

VHDRL1N4004-1

Diode

D964

VHDRL1N4004-1

Diode

D965

VHDRL1N4004-1

Diode

D966

VHDRL1N4004-1

Diode

D967

VHDRL1N4004-1

Diode

D991

RH-EX0631GEZZ

Zener Diode

D992

RH-DX0475CEZZ V

Diode

IC901

RH-FX0034CEZZ

Photo Coupler

Q701

RH-PX0233GEZZ

Start Sensor

Q702

RH-PX0233GEZZ

End Sensor

PACKAGED CIRCUITS

X501

RCRSB0204GEZZ J

Crystal

X701

RCRSB0156GEZZ J

Crystal

COIL AND TRANSFORMERS

FL801

RFiLC0091GEZZ

Filter

L101

VP-CF101K0000

Peaking 100

L201

VP-XF820K0000

Peaking 82

L202

VP-XF101K0000

Peaking 100

L301

VP-ZK101K0000

Peaking 100

L351

VP-ZK101K0000

Peaking 100

(VC-H982U)

L501

VP-XF120K0000

Peaking 12

L602

VP-DF221K0000

Peaking 220

L901

RCiLF0002AJZZ

Coil

L902

RCiLP0161CEZZ

Coil, 10

L903

RCiLP0161CEZZ

Coil, 10

T601

RTRNH0086GEZZ J

Oscillation Transformer

T901

RTRNZ0047AJZZ

Transformer

CONTROLS

R141

RVR-M4334GEZZ J

10k(B), S-IF ADJ.

(VC-H982U)

R162

RVR-M4340GEZZ J

47k(B), ST VCO ADJ.

(VC-H982U)

R163

RVR-M4337GEZZ J

22k(B), Filter ADJ.

(VC-H982U)

R164

RVR-M4340GEZZ J

47k(B), Separation (1)

ADJ. (VC-H982U)

R165

RVR-M4331GEZZ J

4.7k(B), Separation (2)

ADJ. (VC-H982U)

R724

RVR-M4343GEZZ J

100k(B) Head Switching

Point ADJ.

CAPACITORS

C101

VCKYD41HB101K V

100p 50V Ceramic

C105

VCEAGA0JW108M V

1000 6.3V Electrolytic

C106

VCKYCY1HF103Z V

0.01

50V Ceramic

C108

VCCCCY1HH470J V

47p

50V Ceramic

C109

VCCCCY1HH470J V

47p

50V Ceramic

C161

VCEA9M1CW106M V

16V Electrolytic

(VC-H982U)

C162

VCEA9A1HW475M V

4.7

50V Electrolytic

(VC-H982U)

C163

VCKYCY1EB123K V

0.012 25V Ceramic

(VC-H982U)

C164

VCKYCY1HB562K V

5600p 50V Ceramic

(VC-H982U)

C165

VCEA9M1HW474M V

0.47

50V Electrolytic

(VC-H982U)

C166

VCEA9A1HW475M V

4.7

50V Electrolytic

(VC-H982U)

C167

VCKYCY1CB473K V

0.047 16V Ceramic

(VC-H982U)

C168

VCEA9A1HW475M V

4.7

50V Electrolytic

(VC-H982U)

C169

VCEA9M1HW475M V

4.7

50V Electrolytic

(VC-H982U)

C170

VCEA9M1HW335M V

3.3

50V Electrolytic

(VC-H982U)

C171

VCEA9M1HW105M V

50V Electrolytic

(VC-H982U)

C172

VCEA9M1CW106M V

16V Electrolytic

(VC-H982U)

C173

VCEA9M1HW475M V

4.7

50V Electrolytic

(VC-H982U)

C174

VCKYCY1HB272K V

2700p 50V Ceramic

(VC-H982U)

C175

VCEA9A0JW476M V

6.3V Electrolytic

(VC-H982U)

COIL AND TRANSFORMERS (Continued)

Summary of Contents for VC-A582U

Page 1: ... 6 2 2 DISASSEMBLING THE MECHANISM MAIN PWB ASSEMBLY 7 2 3 CARES WHEN REASSEMBLING 8 3 FUNCTION OF MAJOR MECHANICAL PARTS 9 4 ADJUSTMENT REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS 11 4 1 MECHANISM CONFIRMATION ADJUSTMENT JIG 11 5 ELECTRICAL ADJUSTMENT 30 5 1 ADJUSTMENT OF HEAD SWITCHING POINT 31 Page 5 2 ADJUSTMENT OF FV False Vertical Sync OF STILL PICTURE 31 5 3 CHECKING OF OFF TRACK 31 5 4 AD...

Page 2: ...ontrol knobs insulation materials cabinet backs adjustment and compartment covers or shields isola tion resistor capacitor networks mechanical insula tors etc 3 To be sure that no shock hazard exists check for current in the following manner Plug the AC line cord directly into a 120 volt AC outlet Do not use an isolation transformer for this test Using two clip leads connect a 1 5k ohm 10 watt res...

Page 3: ...f part with the mechanism and its PWB in position in the main frame 1 Start and end sensors Q701 and Q702 Insert the sensor s projection deep into the upper hole of the holder Referring to the PWB fix the sensors tight enough 2 Photocoupler IC901 Refer to the symbol on the PWB and the anode marking of the part 3 Cam switches A and B D708 and D709 Adjust the notch of the part to the white marker of...

Page 4: ... 5 2 0Vp p 75 ohm Unbalanced Output level 1 0Vp p 75 ohm Unbalanced Horizontal resolution 220 lines SP mode Signal to noise ratio 45dB SP mode 3 Audio signal Input level 8dBs 309mVrms 47k ohm Output level 8dBs 309mVrms 1k ohm Frequency response 80Hz 10kHz SP mode linear 20Hz 20kHz Hi Fi mode Signal to noise ratio 43dB SP mode linear Hi Fi Dynamic range 90dB VC H982U Wow and flutter 0 005 max Hi Fi...

Page 5: ...5 VC A582U VC A582U A VC H982U 1 3 LOCATION OF MAJOR COMPONENTS AND CONTROL Remote Control Major Components of Your VCR ...

Page 6: ... SHUTTLE SWITCH KNOB TOP CABINET Remove 3 screws 1 FRONT PANEL Remove shuttle switch knob 2 Remove 1 screw 3 and 7 clips 4 OPERATION Remove 1 screw 5 Take it out SHUTTLE JOG of connector 6 PWB DRUM SHIELD Remove 1 screw q with drum shield MECHANISM Remove 2 screws 7 1 screw 8 1 MAIN PWB screw 9 Remove 1 screw 0 with antenna terminal cover ANTENNA TERMINAL COVER DRUM SHIELD OPERATION PWB ...

Page 7: ...antenna cover 1 screw 1 and remove the antenna cover Remove the PWB bottom plate 1 screw 2 Remove the FFC cable AA AD AH 3 which connects the PWB and the mechanism Take out vertically the mechanism so that it does not damage the adjacent parts 2 Removing the mechanism and cassette controller Remove 2 screws 4 fixing the cassette controller to the mechanism and remove the cassette controller ...

Page 8: ...g the return to the initial set position 1 install the cassette controller in the specified position This method is applied only for the mechanism INSTALLING THE MECHANISM ON PWB Lower vertically the mechanism paying attention to the mechanism edge and install the mechanism with due care so that the parts are not damaged So as to fix the mecha nism to the main PWB install two housings Fit the ante...

Page 9: ...6 13 4 6 2 7 3 1 18 No Function No Function 1 Full erase head 2 Sup pole base 3 Tension arm 4 Idler ass y 5 Pinch drive lever ass y 6 Supply reel disk 7 Sup main brake 8 Tu main brake 9 Pinch drive cam 10 A C Head ass y 11 Reverse guide 12 Casecon drive gear 13 Take up reel disk 14 Pinch roller lever ass y ...

Page 10: ...No Function No Function 15 Upper and lower drum ass y 16 Loading motor 17 Drum motor 18 Tu pole base ass y 19 Slow brake 20 Master cam 21 Capstan D D motor 22 Reel belt 23 Clutch lever 24 Limiter pulley ass y 25 Casecon drive gear 26 Shifter 27 Fixing guide 26 24 21 22 19 20 25 23 ...

Page 11: ...ole using resin with screw use the jig Specified torque 5 kg This cassette torque meter is used for check ing and adjusting the torque of take up for measuring tape back tension These Jigs are used for checking and adjusting the torque of take up and supply reel disks Master Plane Jig and Reel Disk Height Adjusting Jig Pinch pressing force measuring jig Reverse guide height adjusting box driver Th...

Page 12: ...ower drum ass y Poor S N ratio no colour Poorflatnessoftheenve lope with alignment tape Notaperunning uneven colour Clean rubber and rubber contact area with the specified cleaning liquid Pinch roller No tape running tape slack No tape running tape slack no fast forward rewind motion Capstan D D Motor Reel belt Cassette not loaded or unloaded Idler ass y Tension band ass y Screen swaying Loading M...

Page 13: ...trol and tool do not contact the guide pin or drum 5 After installing the cassette housing control once per form cassette loading operation TO RUN A TAPE WITHOUT THE CASSETTE HOUSING CONTROL ASSEMBLY 1 Remove the full surface panel 2 Short circuit TP801 3 Plug in the power cord 4 Turn off the power switch The pole bases move into U L position 5 Open the lid of a cassette tape by hand 6 Hold the li...

Page 14: ...the brake surface 2 After reassembly check the video search rewind back tension see page 17 and check the brake torque see page 19 Height checking and adjustment Note 1 Set the master plane with due care so that it does not contact the drum 2 When putting the master plane shift the reverse guide a little in the loading direction Care must be taken since excessive shift results in damage Figure 4 6...

Page 15: ...ort circuiting TP801 provided at the center facing to the main PWB plug in the power cord Setting 1 Set a torque gauge to zero on the scale Place it on the take up reel disk 2 Press the FF button 3 To calculate the remaining capacity of the play back mode slowly rotate the supply reel disk and then shift it into the forward mode Checking 1 Turn the torque gauge slowly one rotation every 2 to 3 sec...

Page 16: ...nd turn it counterclockwise very slowly one rotation every 1 to 2 seconds and check that the torque is within the set value 14 0 3 9mN m 144 40gf cm Figure 4 11 Torque gauge Supply reel disk Note Surely put the torque gauge on the reel disk to measure If the torque gauge is raised accurate measurement is impossible Adjustment 1 If the rewinding playback winding up torque is not within the setting ...

Page 17: ... THE VIDEO SEARCH REWIND BACK TENSION Remove the cassette housing control assembly After short circuiting TP801 provided at the center facing to the main PWB plug in the power cord Checking 1 After pressing the play button press the rewind button and set the video search rewind mode 2 Place the torque gauge on the take up reel disk and turn it counterclockwise very slowly one rotation every 2 to 3...

Page 18: ...ge left right CHECKING AND ADJUSTMENT OF RECORD PLAYBACK BACK TENSION Remove the cassette housing control assembly After short circuiting TP801 provided at the center facing to the main PWB plug in the power cord Setting 1 Turn off the power switch 2 Open the torque cassette meter and fix with tape 3 Set the cassette tape in loading state 4 Put the weight 500g on the cassette torque meter 5 Turn o...

Page 19: ...tmentofthebraketorqueatthesupplysideandthe take up side Unless the supply side brake torque or take up side brake torque is within the setting clean the felt surface of reel disk supply take up brake lever check again the brake torque If value cannot be set within the setting yet replace the main brake ass y or main brake spring Figure 4 20 CHECKING THE BRAKE TORQUE Checking the brake torque at th...

Page 20: ...unloading state unplug the power cord Removal 1 Remove the screws123 Azimuth screw Tilt screw 2 Unsolder the PWB fitted to the A C head Notes 1 When replacing never touch the head If you touched clean with the cleaning liquid 2 When removing the screw 3 take care so that the spring may spring out New A C head ass y A C head PWB 2 Spring 1 Solder Never touch the head 10 8mm 10 8mm Azimuth screw Hei...

Page 21: ...e lower flange to 13 38 mm using the reverse guide height adjustment jig in tape loading state Refer to Figure 4 28 a b Figure 4 29 3 Set the tape and check for tape crease near the reverse guide in the playback mode If crease is found turn the reverse guide adjustment nut to remove crease As for crease check refer to Figure 4 30 a b Figure 4 28 2 Rotate counterclockwise the reverse guide height a...

Page 22: ...the audio output termi nal 3 Using the alignment tape in which 1 kHz linear audio signal has been recorded adjust the height screw so as to get max audio output 4 Using the alignment tape in which 7 kHz linear audio signal has been recorded adjust the azimuth screw so as to get max audio output 500g Figure 4 31 7 Press the tracking button and change the envelope waveform from max to min and from m...

Page 23: ...ide roller to make the tape float above the helical lead The take up side guide roller is then rotated in the clockwise direction to flatten the envelope Figure 4 35 4 A C head X value adjustment 1 Tentatively fix A C head arm screws 1 and 2 by the method described in Page 20 Replacement 3 2 Playback the alignment tape VROEFZCS and shortcircuit TP802 As a result the auto tracking is automatically ...

Page 24: ...ation adjust the playback switching point for adjustment of servo circuit REPLACEMENT OF THE CAPSTAN D D DIRECT DRIVE MOTOR Remove the mechanism from the main PWB refer to Page 7 1 When removing the mechanism from the main PWB Removal Follow the order of indicated numbers 1 Remove the reel belt 1 Figure 4 37 2 Remove the three screws 2 Reassembly 1 Taking care so that the capstan shaft does not co...

Page 25: ...UPPER AND LOWER DRUM ASSEMBLY Replacement Perform in the numerical order 1 Remove the motor as stated in Page 24 D D motor replacement 2 Remove the drum earth brush 2 3 Remove the drum base 3 from the upper and lower drum assembly 1 Cares when replacing the drum 1 Be careful so that the drum earth brush is not lost 2 Do not touch directly the drum surface 3 Fit gently the screwdriver to the screws...

Page 26: ... Lever Ass y 3Insert Open Lever Insert reverse guide lever ass y Align here 2 Insert pinch drive cam Pinch drive lever ass y Fit the pinch drive cam so that the notch of pinch drive cam aligns with the dent of pinch drive lever assembly Fit the pinch drive cam so that the notch of pinch drive lever assembly aligns with the half round notch of chassis Turn the reverse guide lever assembly countercl...

Page 27: ...3 For the phase matching at the insertion point 1 see the point 2 as shown below 4 Finally fix the inserts 1 and 4 Capstan D D motor Drum Reel pulley Bottom side of mechanism chassis Sifter Phase Matching point 2 Insert point 1 Half round notch Shaft 1 Round mark Loading gear T Insert point 3 Insert point 2 Insert point 4 Insert point 6 Release point 3 Rotation point 2 Phase matching point 1 Shaft...

Page 28: ...ent 1 Remove the loading motor and install the replacement loading motor as shown below Figure 4 46 Figure 4 44 2 Wheninstallingthemastercam align the casecon drive gear round mark with the half round notch of master cam The loading motor pressing in must be less than 14 7 N 15 gf Adjust the distance between motor and pulley to 10 2 mm E ring XRESJ30 06000 Master cam Fully turn clockwise Fully tur...

Page 29: ...r L and Drive Gear R ASSEMBLY OF CASSETTE HOUSING 1 Drive Gear and R Drive angle ass y Figure 4 47 MSPRT0381AJFJ Apply grease Apply grease Apply grease LANGF9592AJFW Top surface should be free from scratches or soil Drive angle Drive gear R Frame Figure 4 48 ...

Page 30: ... and all electric components are in good working condition prior to the adjustments otherwise adjustments can not be completed Instruments required Color TV monitor Dual trace oscilloscope Audio signal generator AC milli voltmeter Blank video cassette tape Alignment tape VROATSV Screwdriver for adjustment Color bar generator RF signal generator Figure 5 1 1 2 3 5 4 6 7 8 1 TP201 204 2 R163 3 TP161...

Page 31: ...it between TP802 on the main PWB and pressbothCHbutton andCHbutton at same time 3 Press the tracking buttons and 20 times each to bring the tracking off center Make sure that 1 There is nothing unusual on the playback screen 2 There is nothing unusual in the Hi Fi sound for the Hi Fi models only 5 Cancel the short circuit Note Self recorded tape is a cassette whose program was re corded by the uni...

Page 32: ...69 GND Control R163 STEREO VCO ADJ Specification 1 Feed the RF signal CH 10 300Hz and 3kHz 30 modulation to antenna terminal 2 Connect an Dual AC milli voltmeter to left channel and right channel output terminales 3 Set the audio signal to 300Hz and the modulation factor to 30 Left channel only and adjust R164 SEPARA TION 1 ADJ so that the difference between left chan nel and right channel outputs...

Page 33: ... direction and master cam counterclockwise CASSETTE INSERTION STOP Cassette inserting Full loading YES YES YES NO NO NO Unloading Loading motor starts in normal direction and master cam counter clockwise Does mechanism position sw come off within 2 5 sec Are start end sensors at low level before cassette insertion Insert cassette Double action rack slides Drum motor starts Tape loading Pinch rolle...

Page 34: ...tops End Stop capstan motor NO YES Press STILL key Pinch roller releasing Idler swinging Pinch roller pressing Loading motor turns clockwise and master cam counterclockwise Turn capstan motor in reverse direction Turn loading motor counterclockwise Cam switch is at VSR position Set capstan motor to search speed Is take up reel sensor signal outputted Press REW key Release pinch roller Cam switch i...

Page 35: ...r Loading motor stops End Loading motor turns in clockwise and master cam counterclockwise 4 supply reel pulses outputted Does the take up reel pulse output two edges Capstan motor turns clockwise Loading motor turns clockwise Cam switch is at Eject position Loading motor stops Capstan motor stops Press EJECT key Tape unloading Cassette eject End Capstan motor turns clockwise Capstan motor turns c...

Page 36: ... system in trouble Does capstan motor turn in FF or REW direction Are idler wheel ass y and reel disk in mesh Is the pulse outputted from reel sensor The cassette tape is presumably damaged 2 REC PLAY FAILURE MODE RELEASE NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES Is the master cam at PB position Does loading motor operate Modes changing smoothly through cam switch Loading motor control ...

Page 37: ...reel disk in mesh Is supply reel disk winding torque normal Is pulse outputted from reel sensor Check main PWB YES YES YES YES YES NO NO NO NO NO YES YES NO NO YES Press REW key 4 i Unusual sound in cassette insertion and ejection mode Is unusal sound heard during cassette coutrol running Unusual sound heard with pinch roller lever going up or down Is unusual sound heard during loading unloading C...

Page 38: ...p found at reel disk Drive system out of contact with any part on main PWB Turn capstan motor by hand Unusual sound heard Check drive system s gears for damage Replace damaged gear with new one Reel disk Limiter pulley ass y Idler wheel ass y Check reel disk and main chassis And replace defective parts Adjust reel disk height Rearrange the parts on main PWB ...

Page 39: ...WER TROUBLESHOOTING 3 In case of abnormal noise sound Check D905 thru to D909 and D918 YES YES YES NO NO NO FLOW CHART NO 4 POWER TROUBLESHOOTING 4 In case of output voltage at low level Check the D914 Q903 and Q904 Replace D914 Q903 and Q904 Check IC901 Replace IC901 Check short circuit or leak of T901 Replace T901 Check primary circuit Q901 Q902 C907 thru to C909 and C930 FLOW CHART NO 5 TIMER 1...

Page 40: ...troted Fix or replace the cassette housing YES YES YES YES YES YES YES NO NO NO NO NO Check start sensor cover Check start sensor and all the way up thru to pin 79 of IC701 Check IC701 and all the way up thru to pin 2 of IC703 Check IC703 Check between IC703 and loading motor Replace loading motor Is the specified voltage applied at the loading motor terminal when the cassette tape is inserted Doe...

Page 41: ...ltage applied at the loading motor terminal Check between IC703 and all the way up thru to the loading motor Dose the loading motor run Replace loading motor Replace cassette cam gear etc YES YES YES YES YES YES YES NO NO NO NO NO NO NO YES YES YES YES YES NO NO NO NO NO FLOW CHART NO 11 SYSTEM CONTROL TROUBLESHOOTING No power is turned on Are key data pulses applied at pin 15 of IC701 respectivel...

Page 42: ... of pin 66 of IC701 Is drum PG M M signal given to pin 81 of IC701 Check IC701 Readjust R724 HEAD SW POINT control Is H SW pulse given out of pin 23 of IC701 Check IC701 Replace IC701 YES YES YES YES NO NO NO NO YES YES YES YES YES NO NO NO FLOW CHART NO 15 HEAD SWITCHING PULSE TROUBLESHOOTING No head switching pulse See FLOW CHART NO 13 14 DRUM MOTOR TROUBLESHOOTING 1 2 Is the drum motor rotating...

Page 43: ...erence signal V SYNC at pin 50 of IC701 YES NO NO Check composit sync signal line C770 1 R770 Check drum FG signal line Is the head switching pulse at pin 23 of IC701 present NO See FLOW CHART NO 15 HEAD SWITCHING PULSE TROUBLE SHOOTING YES YES Is the drum error output at pin 33 of IC701 NO Replace IC701 YES YES Is th drum control voltage applied to pin 1 of ME connector NO NO NO Is pin 31 of IC70...

Page 44: ...s the capstan FG signal appear at pin 67 of IC701 Is there oscillated 14 2MHz at pins 38 and 37 of IC701 Check peripheral circuit of X701 Check between capstan FG signal line and the AC MC harness Is there capstan error signal at pin 34 of IC701 Does pin 32 of IC701 operate normally Check 1 Check 2 Replace IC701 Check capstan motor unit and or replace Is there capstan error signal at pin 34 of IC7...

Page 45: ...to the IC701 pin 49 Is picture signal output to the IC701 pin 47 Check the line between IC201 pin 52 and IC701 pin 49 Check the line between IC201 pins 63 and 62 and IC701 pins 56 and 57 Is picture signal output to the emitter of video output buffer Q251 1 Line output Check Q251 periphery and output terminal periphery 2 RF output Check Q251 periphery and tuner pin 6 periphery Is 5V applied to the ...

Page 46: ...01 pin 39 and pin 26 Check C212 Check between the IC201 pin 24 and pin 23 Check C210 Is voltage 5V applied to the CCD section power terminal IC201 pin 36 Is CCD control voltage approx 5V applied normally to the pin 37 from the IC201 pin 57 Is clock signal approx 7 16 MHz 0 5 Vp p for CCD applied normally to the pin 44 from the IC201 pin 69 Check the IC201 pins 13 and 14 peripheral circuit R201 R20...

Page 47: ...201 pin 79 Is luminance signal approx 0 5 Vp p input to the IC201 pin 39 Check between the IC201 pin 39 and pin 26 Check C212 Check between the IC201 pin 21 and pin 42 Check C208 Check between the IC201 pin 18 and pin 19 Check C206 Check between the IC201 pin 55 and pin 54 Check C514 Check between the IC201 pin 79 and pin 78 Is the luminance signal approx 0 25 Vp p input and output to the IC201 pi...

Page 48: ...ound cannot be recorded E E mode is normal Is 600 mVp p record FM signal L ch output to the IC651 pin 29 monitor terminal YES YES YES NO NO NO Is record FM signal output to the IC651 pins 26 to 22 ch 1 pins 26 and 25 ch 2 Check the AA MZ connector Is the IC651 pin 33 in BIAS CTL L state Check the record current setting resistor R353 of IC651 pin 27 Check BIAS CTL L line Replace IC651 FLOW CHART NO...

Page 49: ...IC201 and all the way thru to pins 56 and 57 of IC701 Is there a signal at pin 11 of IC201 Is there L level at pin 99 of IC201 Check A MUTE H line Replace IC201 Check between pin 11 of IC201 and all the way up thru to audio output jack and that between pin 2 of tuner TU101 NO NO YES YES YES YES FLOW CHART NO 29 LINEAR SOUND RECORDING MODE TROUBLESHOOTING No record Is there a signal at pin 4 of IC2...

Page 50: ...50 VC A582U VC A582U A VC H982U ...

Page 51: ...A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U 51 52 8 BLOCK DIAGRAM POWER CIRCUIT BLOCK DIAGRAM ...

Page 52: ...A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U 53 54 SYSTEM SERVO BLOCK DIAGRAM ...

Page 53: ... VC A582U A VC H982U VC A582U VC A582U A VC H982U 55 56 SIGNAL FLOW BLOCK DIAGRAM VC A582U A582U A Recording chroma signal Recording luminance signal Audio recording signal EE signal Audio playback signal Playback chroma signal Playback luminance signal ...

Page 54: ...582U VC A582U A VC H982U VC A582U VC A582U A VC H982U 57 58 SIGNAL FLOW BLOCK DIAGRAM VC H982U Recording chroma signal Recording luminance signal Audio recording signal EE signal Audio playback signal Playback chroma signal Playback luminance signal ...

Page 55: ...al in either the record mode or the play mode voltage is indi cated as follows 4 0 Record mode SP 4 0 PB mode SP 4 0 LP mode 4 0 EP mode NOTE 1 The unit of resistance ohm is omitted K 1000 ohms M 1 Meg ohm 2 All resistors are 1 8 watt unless otherwise noted 3 All capacitors µF unless otherwise noted P µµF Voltages and waveform are measured as follows DC voltages are measured with an SSVM placed be...

Page 56: ... 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U 61 62 9 SCHEMATIC DIAGRAM AND PWB FOIL PATTERN MAIN CIRCUIT 1 VC A582U A582U A VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 57: ...A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U MAIN CIRCUIT 1 VC H982U 63 64 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 58: ...A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U MAIN CIRCUIT 2 VC A582U A582U A 65 66 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 59: ...A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U MAIN CIRCUIT 2 VC H982U 67 68 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 60: ...A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U MAIN CIRCUIT 3 69 70 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 61: ...A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U MAIN CIRCUIT 4 VC H982U 71 72 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 62: ...A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 VC A582U VC A582U A VC H982U VC A582U VC A582U A VC H982U 73 74 PWB FOIL PATTERN MAIN PWB ...

Page 63: ... 3 2 S 8 8 4 REC S 8 8 1 S 8 8 3 S 8 8 6 S 8 8 2 S 8 8 7 STOP FF R884 S831 R839 PLAY REW R885 S 8 8 5 0A 6 P881 R881 R882 R841 R834 R833 RJ801 R883 F 5 4 7 1 A J 3 R832 PAUSE STILL 1 3 2 C 1 R840 OPERATION PWB A B C D E F G H 1 2 3 4 5 6 ...

Page 64: ...76 VC A582U VC A582U A VC H982U ...

Page 65: ...nsistor AA Q206 VSDTC124EK 1 V Transistor AB Q251 VS2SA1037KQ 1 V Transistor AA Q602 VS2C3939SQR 1 V Transistor AC Q603 VS2SC3203Y 1 V Transistor AB Q604 VSDTA114EK 1 V Transistor AB Q704 VS2SA1037KQ 1 V Transistor AA Q705 VSDTC124EK 1 V Transistor AB å Q901 VS2SC4418 1 V Transistor AH å Q902 VS2SD2144S 1 V Transistor AC å Q903 VS2SC2412KQ 1 V Transistor AA å Q904 VS2SA1037KQ 1 V Transistor AA å Q...

Page 66: ...Peaking 82µH AB L202 VP XF101K0000 V Peaking 100µH AB L301 VP ZK101K0000 V Peaking 100µH AB L351 VP ZK101K0000 V Peaking 100µH AB VC H982U L501 VP XF120K0000 V Peaking 12µH AB L602 VP DF221K0000 V Peaking 220µH AB å L901 RCiLF0002AJZZ V Coil AK å L902 RCiLP0161CEZZ V Coil 10µH AD å L903 RCiLP0161CEZZ V Coil 10µH AD T601 RTRNH0086GEZZ J Oscillation Transformer AD å T901 RTRNZ0047AJZZ V Transformer ...

Page 67: ...U C352 VCKYCY1CF104Z V 0 1 16V Ceramic AA VC H982U C353 VCKYCY1HB332K V 3300p 50V Ceramic AA VC H982U C354 VCKYCY1HF103Z V 0 01 50V Ceramic AA VC H982U CAPACITORS Continued C355 VCKYCY0JF105Z V 1 6 3V Ceramic AB VC H982U C356 VCCCCY1HH101J V 100p 50V Ceramic AA VC H982U C357 VCCCPA1HH560J V 56p 50V Ceramic AA VC H982U C501 VCEA9M0JW107M V 100 6 3V Electrolytic AB C502 VCKYCY1HF103Z V 0 01 50V Cera...

Page 68: ...Y1CF104Z V 0 1 16V Ceramic AA C724 VCKYCY1HF103Z V 0 01 50V Ceramic AA C726 VCKYCY1HF103Z V 0 01 50V Ceramic AA VC H982U C727 VCKYCY1CF224Z V 0 22 16V Ceramic AA C729 VCKYCY1HF103Z V 0 01 50V Ceramic AA C730 VCKYCY1HF103Z V 0 01 50V Ceramic AA C731 VCKYCY1CF104Z V 0 1 16V Ceramic AA C738 VCKYCY1HB102K V 1000p 50V Ceramic AA C739 VCKYCY1HB102K V 1000p 50V Ceramic AA C740 VCKYCY1CF104Z V 0 1 16V Cer...

Page 69: ...100 1 8W Carbon AB R208 VRS CY1JF272J V 2 7k 1 16W Metal Oxide AA R209 VRS CY1JF331J V 330 1 16W Metal Oxide AA R210 VRS CY1JF182J V 1 8k 1 16W Metal Oxide AA R211 VRS CY1JF822J V 8 2k 1 16W Metal Oxide AA R212 VRS CY1JF681J V 680 1 16W Metal Oxide AA R213 VRS CY1JF822J V 8 2k 1 16W Metal Oxide AA R214 VRS CY1JF104J V 100k 1 16W Metal Oxide AA R216 VRS CY1JF102J V 1k 1 16W Metal Oxide AA R217 VRS ...

Page 70: ... V 4 7k 1 16W Metal Oxide AA VC H982U R675 VRS CY1JF103J V 10k 1 16W Metal Oxide AA VC H982U R676 VRS CY1JF000J V 0 1 16W Metal Oxide AA VC H982U R677 VRS CY1JF000J V 0 1 16W Metal Oxide AA VC H982U R678 VRS CY1JF153J V 15k 1 16W Metal Oxide AA VC H982U R679 VRS CY1JF153J V 15k 1 16W Metal Oxide AA VC H982U R701 VRS CY1JF103J V 10k 1 16W Metal Oxide AA R703 VRD RA2BE102J V 1k 1 8W Carbon AA R704 V...

Page 71: ...xide AA å R918 VRS CY1JF183J V 18k 1 16W Metal Oxide AA å R919 VRS CY1JF392J V 3 9k 1 16W Metal Oxide AA å R920 VRS CY1JF682J V 6 8k 1 16W Metal Oxide AA å R922 VRS CY1JF221J V 220 1 16W Metal Oxide AA å R925 VRS CY1JF000J V 0 1 16W Metal Oxide AA R951 VRD RM2HD152J V 1 5k 1 2W Carbon AA R952 VRS CY1JF223J V 22k 1 16W Metal Oxide AA R954 VRS CY1JF561J V 560 1 16W Metal Oxide AA R955 VRS CY1JF103J ...

Page 72: ... 2 AE 30 MSPRT0402AJFJ V Loading Double Action AE Spring 31 MSPRT0403AJFJ V Pinch Double Action AD Spring 32 MSPRC0213AJFJ V Earth Spring AC 33 MSPRT0416AJFJ V Tension Spring AD 34 NBLTK0067AJ00 V Reel Belt AE 35 NDAiV1078AJ00 V Reel Disk AE 36 NGERH1293AJZZ V Loading Connect Gear AD 37 NGERH1295AJ00 V Master Cam AE 38 NGERH1294AJZZ V Casecon Drive Gear AD 39 NGERH1270AJZZ V Take Up Loading Gear A...

Page 73: ...ZZ J Tension Arm Ass y AK 16 LANGF9620GEFW J A C Head Plate AG 17 MLEVP0271GEZZ J Sifter Drive Lever AE 18 MLEVP0272GEZZ J Pinch Double Action Lever AD 19 MLEVP0301GEZZ J Reverse Guide Lever Ass y AL 20 MLEVP0275GEZZ J Reverse Drive Lever AB 21 MLEVP0292GEZZ J Slow Brake Lever AE 22 MLEVP0290GEZZ J Open Lever AD 23 MLEVP0293GEZZ J Clutch Lever AE 24 MLEVP0294GEZZ J Sup Main Brake Ass y AF 25 MLEVP...

Page 74: ...Washers 201 XBPSD26P08000 V Screw 2 6P 8S A C Head AA 202 LX HZ3082GEZZ J A C Head Screw AD 203 XHPSD26P06000 V Screw C2 6P 6S AA For Capstan Motor 207 XHPSD30P08WS0 V Screw C3 0P 8S AA For Drum Base 208 XRESJ30 06000 V E Ring E 3 AA 209 XWHJZ31 05052 V Washer W3 1 5 2 0 5 AC 210 XWHJZ31 03052 V Washer W3 1 5 2 0 3 AC 211 XWHJZ31 04052 V Washer W3 1 5 2 0 4 AC 212 XWHJZ31 06052 V Washer W3 1 5 2 0...

Page 75: ...iF0075AJFW V Slider AK VC A582U H982U 308 MSLiF0075GEFW J Slider AK VC A582U A 309 MSPRD0151AJFJ V Proof Lever R Spring AB VC A582U H982U 309 MSPRD0151GEFJ J Proof Lever R Spring AB VC A582U A 310 MSPRD0166AJFJ V Drive Gear R Spring AE VC A582U H982U 310 MSPRD0166GEFJ J Drive Gear R Spring AE VC A582U A 311 MSPRP0175AJFJ V Cassette Spring AE VC A582U H982U 311 MSPRP0159GEFJ J Cassette Spring AD VC...

Page 76: ...SD30P10WS0 V Screw AA End of Front Panel Parts FRONT PANEL PARTS 501 CPNLC2327TEV1 V Front Panel Ass y AX VC A582U 501 CPNLC2327TE00 V Front Panel Ass y AX VC A582U A 501 CPNLC2345TEV0 V Front Panel Ass y AY VC H982U 501 1 Front Panel VC A582U A582U A 501 1 Front Panel VC H982U 501 2 HBDGB1008AJSA V SHARP Badge AE 501 3 HDECQ1756AJSA V Cassette Flap AG VC A582U 501 3 HDECQ1756EJSA I Cassette Flap ...

Page 77: ...RRMCG0235AJSA V Infrared Remote Control AZ 90A64EC2078A V Battery Cover Infrared AF Remote Control TiNS 3224AJZZ V Operation Manual AG VC A582U H982U TiNS 3224EJZZ I Operation Manual AG VC A582U A TCADH0039AJZZ V Timer Card AC VC A582U H982U TCADH0039EJZZ I Timer Card AC VC A582U A ACCESSORIES NOT REPLACEMENT ITEM TGAN 0001AJZZ Guarantee Card VC A582U H982U TGAN 0001EJZZ Guarantee Card VC A582U A ...

Page 78: ...SM CHASSIS PARTS 22 31 12 20 18 214 19 29 49 51 8 11 203 49 51 7 58 52 4 25 24 2 33 15 1 50 218 207 67 207 63 62 66 66 66 53 65 216 41 61 21 38 17 208 60 47 44 6 30 36 9 39 45 219 10 30 40 27 43 46 43 35 35 37 34 23 62 48 209 210 211 212 213 223 5 26 32 68 69 55 16 202 222 221 201 202 202 220 59 70 57 71 56 ...

Page 79: ...91 VC A582U VC A582U A VC H982U A B C D E F G H 1 2 3 4 5 6 301 300 304 311 308 311 305 306 309 303 312 316 315 307 314 310 317 313 302 CASSETTE HOUSING CONTROL PARTS ...

Page 80: ...92 92 VC A582U VC A582U A VC H982U A B C D E F G H 1 2 3 4 5 6 MECHANICAL PARTS S H A R P A B B C C A 600 609 604 603 607 605 615 608 610 602 609 612 614 613 615 ...

Page 81: ...ft side rod Do not mount the front panel with the cassette cover tilted too open Otherwise the cassette covermightwronglyrun onthecassettehousing Keep the cassette over about 45 open and make sure that the cassette cover open lever is between the front panel and the cassette cover Now fix the front panel in place Before attaching the front panel in position make surethatthecassettecover open lever...

Page 82: ...e rod Do not mount the front panel with the cassette cover tilted too open Otherwise the cassette covermightwronglyrun onthecassettehousing Keep the cassette over about 45 open and make sure that the cassette cover open lever is between the front panel and the cassette cover Now fix the front panel in place Before attaching the front panel in position make surethatthecassettecover open lever is in...

Page 83: ...C A582U SPAKC3631EJZZ VC A582U A SPAKC3632AJZZ VC H982U Packing Case FRONT Use 8 staples to fix the bottom of packing case TLABK0005AJZZ NO Card Dry Battery FRONT Accessories TiNS 3224AJZZ Operation Manual VC A582U H982U TiNS 3224EJZZ Operation Manual VC A582U A TGAN 0001AJZZ Guarantee Card VC A582U H982U TGAN 0001EJZZ Guarantee Card VC A582U A TCADH0039AJZZ Timer Card VC A582U H982U TCADH0039EJZZ...

Page 84: ...Japan COPYRIGHT C 1998 BY SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher TQ0391 S Jan 1998 Printed in JAPAN NA NS ...

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