Sharp VC-H965U Service Manual

1VC-A565U/H965USUPPLEMENTS62K8VC-A565USERVICE MANUALThis document has been published to be used forafter sales service only.The contents are subject t

10VC-A565U/H965USUPPLEMENTNote:Whenever replacing the reel disk, perform the height check-ing and adjustment.Notes:1. Hold the torque gauge by hand so

11VC-A565U/H965USUPPLEMENTNotes:1. Hold the torque gauge by hand so that it is not moved.2. Do not keep the reel disk in lock state. Do not allow long

12VC-A565U/H965USUPPLEMENTFigure 4-11.Pinch rollerTension gauge900 - 1,200gfCapstan shaftTension gauge adapterFigure 4-10.Torque gaugeTake-up reel dis

13VC-A565U/H965USUPPLEMENT• Checking1. Set a cassette tape, push the REC button to place theunit in the SP record mode. Now check the tension poleposi

14VC-A565U/H965USUPPLEMENT• Adjustment1. If the indication of torque cassette meter is lower thanthe setting, shift the tension spring engagement to t

15VC-A565U/H965USUPPLEMENTFigure 4-22.• Replacement1. Solder the removed PWB to the new head assembly.2. Adjust the height from the A/C head arm (lowe

16VC-A565U/H965USUPPLEMENT4-17 ADJUSTMENT OF TAPE DRIVE TRAIN1. Tape run rough adjustment1 Check and adjust the position of the tension pole.(See 4-12

17VC-A565U/H965USUPPLEMENTNotes:1. Previously set the tracking control in the center position,and adjust the ATR signal waveform to maximum with Xvalu

18VC-A565U/H965USUPPLEMENT3 Next, press the tracking button (+), (–) and changethe ATR signal waveform from max to min and frommin to max. At this tim

19VC-A565U/H965USUPPLEMENT4-19 REPLACEMENT OF DRUM D.D. MOTOR1. Set the ejection mode.2. Withdraw the main power plug from the socket.• Removal (Perfo

2VC-A565U/H965USUPPLEMENTVC-H965UVC-A565UMECHANISM CHASSIS2-2 DISASSEMBLING THE MECHANISM1. When removing the mechanism from the set.Remove the scre

20VC-A565U/H965USUPPLEMENT4-21 ASSEMBLING OF PHASE MATCHINGMECHANISM COMPONENTS• Assemble the phase matching mechanism compo-nents in the following or

21VC-A565U/H965USUPPLEMENTFigure 4-37.4-22 INSTALLING THE SHIFTERFigure 4-36.1. Make sure that the loading arm T and S are at the Phase-Matching point

22VC-A565U/H965USUPPLEMENT4-23 INSTALLING THE MASTER CAM (ATREAR SIDE OF MECHANISM CHASSIS)1. Make sure beforehand that the shifter is at initial posi

23VC-A565U/H965USUPPLEMENT4-25 ASSEMBLY OF CASSETTE HOUSING1. Proof lever Proof lever spring and Holder RFigure 4-41.MSPRD0215AJFJ*Proof lever spring

24VC-A565U/H965USUPPLEMENTLANGF9661AJFWTop surface should be free from scratches or soil. When assemble drive lever to frame R, make sure the hole s

25VC-A565U/H965USUPPLEMENTLoading motor turns in reversedirection and master camclockwise.CASSETTE INSERTION STOPCassetteinsertingFull-loadingYESY

26VC-A565U/H965USUPPLEMENTSTOP REC/PLAYPLAY STILLPLAY VSRVSR PLAYCapstan motor turnscounterclockwise.Is take-up reel sensor signalou

27VC-A565U/H965USUPPLEMENTSTOP FF/REWSTOP CASSETTE EJECTFF/REW STOPNONOFF/REWoperationBrakefunctionTurn capstan motor innormal or rever

28VC-A565U/H965USUPPLEMENTMECHANISM TROUBLESHOOTING1. FF/REW FAILURE (NO TAPE WINDING)Press FF key.NONONONO NO NONONOYESYESYESYESYESYESYES YESIs maste

29VC-A565U/H965USUPPLEMENTReplace loading motor block.3. WINDING FAILURE AT VSR 4. UNUSUAL SOUND IN EACH MODEIs Playbackfunction normal ?Master camshi

3VC-A565U/H965USUPPLEMENTAH CONNECTORAE CONNECTOREND SENSOREND TIP SWAA CONNECTORAD CONNECTORMODE SWSTART SENSORAC CORD90°180°270°0°VC-H965UVC-A565UMA

30VC-A565U/H965USUPPLEMENTYESYESNONONONOYESYESReplace capstan motor.4-ii) Unusual sound in FF/REW modeIs reel disk height as specified ?Thrust gap fou

31VC-A565U/H965USUPPLEMENT

32VC-A565U/H965USUPPLEMENTSHARP CORPORATIONAV Systems GroupQuality & Reliability Control CenterYaita, Tochigi 329-2193, JapanNo part of this publi

4VC-A565U/H965USUPPLEMENT3. FUNCTION OF MAJOR MECHANICAL PARTS (TOP VIEW)No. FunctionNo. Function1 Full erase head2 Supply pole base ass’y3 Tension ar

5VC-A565U/H965USUPPLEMENTFUNCTION OF MAJOR MECHANICAL PARTS (BOTTOM VIEW)No. FunctionNo. Function19 Syncro Gear20 Master cam21 Capstan D.D. motor22 Re

6VC-A565U/H965USUPPLEMENTVROATSV CD11. JiGHMEC-M005 CK10. JiGDRiVER-6 BM9. JiGDRiVERH-4 AP4. Torque Driver JiGTD1200 CB4. ADJUSTMENT, REPLACEMENT AND

7VC-A565U/H965USUPPLEMENT4-2 MAINTENANCE CHECK ITEMS AND EXECUTION TIMEPerform the maintenance with the regular intervals as follows so as to maintain

8VC-A565U/H965USUPPLEMENTFigure 4-1.• Reassembly1. Before installing the cassette housing control, short-circuit between TP803 and TP802 provided at m

9VC-A565U/H965USUPPLEMENT4-5 REEL DISK REPLACEMENT AND HEIGHTCHECK• Removal1. Remove the cassette housing control assembly.2. Remove the Supply/Take-u