Jvc-HRXV-45-SEZ-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.YD070 2005/7 DVD PLAYER SW 30Hz PAL:SW 25Hz Head switching output point RF Envelope output point Play the Alignment tape Left X-value Adjusting Hole Tilt Adjusting Screw (C) Fixing Screw Height Adjusting Screw (B) Right Grove of Base

2、A/C Purpose of adjustment : To maintain compatibility with other VCR (VCP). RF ENVELOPE OUTPUT POINT HEAD RF SWITCHING OUTPUT POINT OSCILLOSCOPE Connection Diagram CH-2CH-1 Azimuth Adjustment Screw(A) (No.YD070)1-27 4.3.8Adjustment after Drum Assembly (Video Heads) 4.3.9Check of Traveling Device aft

3、er Deck Assembly 4.3.9.1Audio, RF Normalization Time (Locking Time) Check in Play after CUE or REV 4.3.9.2Check of Tape Curl and Jam Status Checking/Adjustment Procedure 1) Play the blank tape and check whether the guide roller crumbles or wrinkles the tape and adjust it if necessary. 2) Check that

4、the RF envelope output waveform is flat, and adjust the height of the guide roller while playing the alignment tape. 3) Adjust the switching point. 4) Check the RF envelope output is the maximum when the tracking control locates at the center. If not maximum, set up to ensure that RF envelope output

5、 becomes the maximum by turning the (+) type driver on the base A/C groove. Fixtures and tools usedConnection positionVCR (VCP) statusAdjustment position Oscilloscope Alignment tape (only for SP) Post Height Adjusting Driver Driver (+) Type 5mm CH-1: PB RF Envelope CH-2: NTSC : SW 30Hz PAL:SW 25Hz H

6、ead switching output point RF Envelope output point Play the blank tape. Play the Alignment tape. Fine adjustment of guide roller Switching Point Tracking Preset X-value Purpose of adjustment : To adjust and stabilize the height change, X-value change, etc depending on the guide roller after assembl

7、ing the drum. RF ENVELOPE OUTPUT POINT V2V1V1 V1/V MAX = 0.7 V1/V MAX = 0.8 RF ENVELOPE OUTPUT HEAD RF SWITCHING OUTPUT POINT OSCILLOSCOPE Connection Diagram Waveform CH-2CH-1 Checking Procedure 1) Check that locking time of the RF and Audio waveform is fallen within the measuring standard in conver

8、sion of the play mode from the CUE or the REV mode. 2) Readjust the paragraph 4.3.6 and 4.3.7 if it deviates from the standard. Fixtures and tools usedMeasuring standardConnection positionVCR (VCP) status Oscilloscope Alignment tape (Colour bar) Stop Watch RF Locking Time: Within 5 seconds Audio Loc

9、king Time : Within 10 seconds CH-1: PB RF Envelope CH-2: Audio output RF Envelope output point Audio output jack Play the Alignment tape (Colour bar) Checking Procedure 1) Check there is no abnormality of every traveling post status. 2) There must be no abnormal operation of the counter in occurrenc

10、e of folding of the bottom tape. There must be not abnormality of audio signal in damage of the top tape. 3) If there is abnormality, readjust the adjustment paragraph 4.3.5 and 4.3.6. Fixtures and tools usedFixtures and tools usedFixtures and tools used E-240 Tape E-160 Tape There must be no jam or

11、 curl at the first, middle and end position of tape. Travel the tape at the position of its first and end. 1-28 (No.YD070) 4.4PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION (VCR) 4.4.1Checking Points prior to Repair Following abnormal phenomena may be repaired by removal of foreign materials an

12、d oil supply. Check oiling is required at the checking set or cleaning status is complete. Determine that necessity of checking and repair the set exists af- ter checking the using period of the set together with the user. In this case, followings must be checked: (3) F/E Head (5) Drum Assembly (Vid

13、eo Head) (4) Base Assembly P2 (2) Tension Post (1) Supply Reel (6) Base Assembly P3 Phenomena Replace- ment Checking Points and Cause Color beatPollution of Full-Erase Heado S/N, Color FadedPollution of Video Heado Horizontal, Vertical Jitteo CAUTIONS If operation of the position with (O) mark is ab

14、normal even after removing cause, replace it with substitute product since it shows damage or wearing. (7) A/C Head (8) P4 Post (10) Pinch Roller (11) Take-up Guide Post (9) Capstan Shaft (12) Take-up Reel * No. (1) (12) shows sequence that the tape moves from the supply reel to the take-up reel.) F

15、ig. C-9-1 TOP VIEW Fig. C-9-2 BOTTOM VIEW F/E Head Video Head A/C Head Pinch Roller Belt Capston Clutch Assembly A37 Fig. C-9-3 Tape Transport System Pollution of Video Head or Tape Transport System Poor Sound, Low Soundo Pollution of Audio/Control Head o Pollution of Pinch Roller or Belt Capstan Be

16、lt No tape wound or tape wound loosely. FF or REW impossible, or slow turning Deterioration of Clutch Assembly D37 Torque Pollution of Drum and Traveling Device Tape loosely wound in REV or Unloading o Fig. C-9-3 (No.YD070)1-29 4.4.2Essential Check and Repair Recording density of the video is far hi

17、gher than the audio. Therefore video parts are very precise so as to allow only error of 1/1000mm or so in order to maintain compatibility with other videos. If one of these parts is polluted or old, same phenomena will appear as they are damaged. To maintain clear screen, regular check, replacement

18、 of old and damaged parts and oil supply, etc are essential. 4.4.3Regular Check and Repair Check and repair schedule is not constant since they vary de- pending on method that the consumer uses video and environ- ment where the video is installed at. However, for the video used by common household,

19、good screen will be maintained if regular check and repair per 1,000 hour is performed. The following chart shows relationship between us- ing time and checking time: 4.4.4Tools for Check and Repair (1) Grease: Floil G-3114 (KANTO) or equivalent grease (Green) (2) Grease: Kanto G-754, PL-433 (Yellow

20、) (3) Alcohol (Isopropyl Alcohol) (4) Cleaning Patch (cloth) 4.4.5Maintenance Process 4.4.5.1Removal of Foreign Material (1) Removal of foreign material from video head (Fig. C-9-4) Firstly try to use a cleaning tape. Use a cleaning patch if foreign materials are not removed with the cleaning tape d

21、ue to severe dirty of the head. Soak the cleaning patch in alcohol and put it to the head tip. Smoothly turn the drum (turning cylinder) to the right or left (In this case, the cleaning patch must not be moved verti- cally). After completely drying the head, test the traveling status of the tape. If

22、 alcohol (Isopropyl Alcohol) remains at the video head, the tape may be damaged when this solution touches with the head surface. Never use a cloth bar (commercial sale) (2) Wipe the tape transport system and the drive system with the cleaning patch soaked in alcohol (Isopropyl Alcohol) when removin

23、g foreign materials from them. 1) The part touched with the traveling tape is called as tape transport system. The drive system consists of parts to travel the tape. 2) Care must be exercised so that unreasonable force to change the pattern will be applied to the tape transport system during removal

24、 of foreign materials. About 1 year One hour Two hours Three hours Time Requiring Checking Average hours used per day About 18 months About 3 years Fig. C-9-4 Drum (Turning Cylinder) Head Tip Soak alcohol (Isopropyl Alcohol). Cleaning Patch (Cloth) Smoothly turn the drum (turning cylinder) touching

25、the soft surface to the head tip surface. 1-30 (No.YD070) 4.4.5.2Grease Applications (1) Grease Application Method Apply grease by using a cloth swab or brush. Care must be exercised so that excess quantity should not be used. If the excessive quantity is applied, wipe it with the gauze soaked in al

26、cohol (Isopropyl Alcohol). (2) Regular Grease Application Apply grease to the designated application position every 500 hour. NOTE: POSITION OF GREASE APPLICATION 5 4 2 1 3 Cam Part (PL-433.Yellow) Gear Part (PL-433.Yellow) Boss Part Side Wall (PL-433.Yellow) Gear Part Side Application (PL-433.Yello

27、w) Cam Part Side Application (KG-684G.Green) Gear SectorGear Cam Base LoadingGear Drive Inner Surface of Guide Rail (KG-684G.Green) Chassis (L)Chassis (R) Gear Part 1 2 3 4 6 5 7 Chassis (TOP) Chassis (Bottom) Cam Part (KG-684G , GREEN) Cam Part (KG-684G , GREEN) Gear Rack F/L Lever, Brake Driving C

28、am Part Side Wall Guide Part Lever F/R Driving Part Side Wall Guide Part Lever, Spring Driving Part Lever Tension Driving Cam Part Gear Sector Driving Part Plate Slider (1) Inner Side Surface and Top Surface of Loading Path (2) Stable Adhesion Part of Base P2, P3 (3) Arm Pinch Shaft (4) Gear Wheel S

29、haft (5) Reel S. T. Shaft (1) (2) (3) (4): KG-684G (Green) (5): PL-433 (Yellow) (1) Inner Side Surface and Top Surface of Loading Path (2) Stable Adhesion Part of Base P2, P3 Coil (3) Gear Cam Shaft (4) Gear Drive Shaft (5) Clutch Shaft Groove (6) Guide Part on the Plate Slider Side Wall (Left) (7)

30、Guide Part on the Plate Slider Side Wall (Right) (1) (2) (3) (4) (5) (6) (7): KG- 684G (Green) (No.YD070)1-31 Lever, F/R, Base, TensionGEAR AY, P2 using LP you will be able to record up to 360 minutes. Please note there will be a slight loss in picture and sound quality when using LP. 1. Make sure t

31、hat you have correctly connected your DVD+VCR as described earlier in this book. Press 11/ /+ to turn on your DVD+VCR. 2. Insert a video cassette with protection tab into your DVD+VCR. The video cassette should have the window side facing up and the arrow facing away from you. 3. Press 3 3 or 4 4 to

32、 select the programme number you wish to record. You may also directly select programme number using the numbered buttons on the remote con- trol. 4. If you wish to record directly from the SCART or RCA jacks, repeatedly press AUX until the sock- et you wish to record from is displayed. AV 1 for rec

33、ording from EURO AV1 SCART jacks on the rear of your unit. AV 2 for recording from EURO AV2 SCART jacks on the rear of your unit. AV 3 for recording from VIDEO IN and AUDIO IN (Left RECP will be displayed when a tape is paused. After 5 minutes your DVD+VCR will stop recording to prevent damaging the

34、 tape or your DVD+VCR. 8. Press xx to end recording. Press EJECT (). Notes: ?If you do not wish to record on a tape (this can hap- pen quite easily by accident!) remove the protection tab on the back edge of the video cassette. ?It is possible to record on a video cassette with the record protection

35、 tab removed by covering the hole with self adhesive tape. ?Remember you can record one programme while watching another by starting your instant recording, press TV/VCR to select TV mode and then select- ing a different channel on your TV. 24 VIDEO Plus+ Programming VIDEO Plus+ greatly simplifies e

36、ntering the date, channel, start and end times of a Timer Recording by simply entering VIDEO Plus+ Code. VIDEO Plus+ Codes are published in most TV guide mag- azines; they can vary one to nine numbers in length. 1. Make sure that TV channels have been tuned and stored in correct VIDEO Plus+order. In

37、sert a video cassette with protection tab into your DVD+VCR. 2. Press VIDEO Plus+. 3. Press the numbered buttons to enter the PlusCodeof the TV programme that you wish to record. If you make a mistake press Fthen enter the revised number. 4. Press OK. If PLEASE CHECK is displayed it means that you h

38、ave entered the wrong VIDEO Plus+ numbers, entered the VIDEO Plus+ numbersincorrectly. If “- -” is displayed, you have to enter the programme number of the station, you want to record from. 5. Press For Gto select the settings that you wish to revise. (PR, DATE, TIME VPS/PDC and SP). Press Dor Eto e

39、nter the correct information. 6. Press G to select the recording speed. Press Dor Eto select the desired tape speed (SP, IP, or LP). IP mode determines how much tape is left and switches speed from SP to LP, if necessary, to complete recording the program. IP mode is not selected when VPS/PDC is ON.

40、 Check that the timer event details are correct. If you wish to record from AUDIO IN and VIDEO IN on the front or from either of the EURO SCART sockets on the back of VCR, press AUX to select for correct display (AV1, AV2 or AV3). 7. If you want to make another VIDEO Plus+ recording repeat stages 2

41、- 7. Press i twice. If PLEASE CHECK is displayed, you have entered incorrect information and will need to re-enter the data. Press 11/ /I to switch your DVD+VCR power off mode. will appear in the video recorders display while your VCR waits to make the recording. To watch a DVD during timer recordin

42、g standby mode, press 11/ /I and DVD to switch to DVD mode. 8. Press 11/ /I to end recording. Notes: Programme Delivery Control (PDC) The Programme Delivery Control (PDC) system adjusts the start and end times of a timer record event. This can be particularly useful with sports events which may run

43、over into extra time. The PDC signal is transmitted by the broadcaster and this controls your video recorders timer. Currently only a limited number of TV companies transmit PDC signals. Please make sure that when recording from channels that do not broadcast PDC that you turn PDC OFF. OKi09, VIDEO

44、PLUS+ CODE NO. - - - - - - - - - REC OKi09, VIDEO PLUS+ CODE NO. 246876543 REC DELETE : PRDATETIME - - -SP - - -SP - - -SP - - -SP - - -SP - - -SP - - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: 10PR-01 12SP11 11 55: i PRDATETIME - - -SP - - -SP - - -SP -

45、- -SP - - -SP - - -SP - - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: 10PR-01 12SP11 11 55: i PRDATETIME - - -SP - - -SP - - -SP - - -SP - - -SP - - -SP - - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: - - - - - - -: 10PR-01 12S

46、P11 11 55: i 25 Operation Timer recording using On Screen Display You may set up to seven timer record events within one month of the current date. Note: Before setting the timer make sure that you have set the DVD+VCR clock correctly and you know which stations you have tuned TV stations on your DV

47、D+VCR. 1. Insert a video cassette with protection tab into your DVD+VCR. The video cassette should have the window side facing up and the arrow facing away from you. 2. Press i. Press 1 or 2 to select REC (). Press OK. 3. Press OK to start setting the timer record event. 4. Use the v/V to enter the

48、station that you wish to record then press 2. Note: If all timer record events are full press v or V to select the event that you wish to remove and replace. Press b to delete the event. 5. Use the v/V to enter the date of the programme. If you press OK before entering the date you may select one of

49、 the following automated recording features. Press 1 or 2 to select, then press OK to confirm. DLY To record every day (except Saturday and Sunday) at the same time. SUSA To record at the same time every week. 6. Use v/V/1/2 buttons to enter the recording start and end times of the programme that you wish to record. Please note your DVD+VCR uses a 24 hour clock. e.g. 1pm will be displayed as 13:00. 7. Press B and press v or V to switch VPS/PDC on or off. 8. Press B to select the recording speed. Press v or V to sele