JVC GY-HD251 manual Routine and Periodical Maintenance, Precautions for Use of Head Cleaning Tape

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e_hd250.book Page 7 Tuesday, October 24, 2006 3:11 PM

Routine and Periodical Maintenance

The GY-HD250/GY-HD251 incorporates precision mechani- cal parts, which will collect dirt, wear out and deteriorate as this device is used. After this device has been used for a long period even in a normal environment, the heads, drums and tape transport mechanisms also collect dirt. Especially, dust which penetrates the inside of the VTR section during out- door use will promote the wear and deterioration of mechani- cal parts by causing poor contact between tape and heads or failing to maintain the video and audio quality at high levels. To prevent wear and deterioration, clean the mechanical parts using a head cleaning tape as routine maintenance. However, cleaning with a head cleaning tape alone is not enough for cleaning the entire tape transport mechanism, so it is also recommended to apply periodical maintenance (inspection) to prevent the sudden occurrence of failure. As the replacement, adjustment and servicing of parts require advanced skill and equipment, please consult the person in charge of professional video equipment at your nearest JVC- authorized service agent.

Head Cleaning

•To maintain beautiful pictures and sound, be sure to use a head cleaning tape to clean the head periodically. X See “Precautions for Use of Head Cleaning Tape”. If head cleaning is not performed periodically, a type of mosaic noise called block noise may appear in the picture or sound may be interrupted.

Block Noise

•Please use cleaning tape produced by JVC. Do not use head cleaning tapes other than specified.

X See “Precautions for Use of Head Cleaning Tape” about how to use the head cleaning tape and precautions for use of the head cleaning tape.

•When dust adheres to the heads, the warning message “HEAD CLEANING REQUIRED!” is displayed on the LCD monitor, and in the viewfinder during playback and record- ing check using the RET button on the lens section.

Periodical Maintenance

Contents : Check or replace the following mechanical parts according to the running time.

Usage Time

 

500H

1000H

1500H

2000H

Drum assembly (includ-

 

G

E

E

F

ing heads)

 

 

 

 

 

 

 

 

 

 

 

 

Tape guides, rollers

 

G

E

E

F

 

 

 

 

 

 

Belt gears

 

H

E

E

F

Drive parts

 

H

H

E

F

 

 

 

 

 

 

G: Clean, check and adjust.

 

 

 

 

E: Clean and check. Replace as required.

F: Replace.

•The maintenance contents vary depending on the operat- ing environment and method. Therefore, the data in the chart should be considered as a reference.

Time management

The accumulated running time of this device can be con- firmed with the hour meter display (which shows the accu- mulated drum and fan motor running time). X See “How to Display the Hour Meter” on page 111.

For consultations related to the maintenance planning or cost, please contact the person in charge of professional video equipment at your nearest JVC-authorized service agent.

Precautions for Use of Head Cleaning Tape

Please use cleaning tape produced by JVC.

Adhere to the following precautions when using the head cleaning tape.

1.Insert the cleaning tape.

Press the PLAY/STILL button after the cleaning tape is fully loaded.

The tape runs for 10 seconds at a time in the PLAY mode. (The tape stops automatically and then this device enters the STOP mode.)

2.Do not use the tape more than four times at the most for each cleaning.

„Use the following chart as a guide for periodical head cleaning.

 

Low

Room

High

Running

temperature

temperature

temperature

Operating envi-

0°C to 10°C

10°C to 35°C

35°C to 40°C

ronment

 

 

 

Yardstick for

1 to 2 times ev-

1 to 2 times ev-

1 to 2 times ev-

use of cleaning

ery 5 hours

ery 20 to 30

ery 5 hours

tape

 

hours

 

Note 1) When used in a low humidity environment, head cleaning should be conducted at intervals half of those given in the chart above.

Note 2) If an M-DV80 tape is used immediately after head cleaning, the “HEAD CLEANING REQUIRED!” indicator may remain on. In this case, let the tape run as the indicator will turn off after the tape has run for a while.

Note 3) Use the cleaning tape in the room temperature (10°C to 35°C).

Note 4) The cleaning tape case contains instructions for use of the cleaning tape. However, some of these instructions differ from the contents of this sheet. When using the cleaning tape, please follow the instructions of this sheet.

Note 5) If the “HEAD CLEANING REQUIRED!” does not disappear after repeated head cleanings, the recording tape may be abnormal. Avoid excessive repeated use of the head cleaning tape.

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Contents Victor Company of Japan, Limited LST0440-001B For Customer UseImportant Safeguards Remarque Safety PrecautionsPort Cable Length Safety Precautions Cont’dBusiness users Other Countries outside the European Union Information for Users on Disposal Old EquipmentEuropean Union HD251CHE Main Features Contents Playback Mode Precautions for Proper Use Periodical Maintenance Routine and Periodical MaintenancePrecautions for Use of Head Cleaning Tape Head CleaningVideocassette to be Used Battery Pack to be UsedCondensation occurs in the following cases Characteristic CCD Phe- nomenaCondensation Th16 × 5.5BRMU Zoom LensFront Section 3Shoulder belt hooks Rear Section1Back tally lamp 2PHONES Earphone jackLCD Door Right Side Section GHDV/DV LED BGAIN Sensitivity selector switchCWHT.BAL White balance switch ASTATUS Status/Menu buttonLeft Side Section GGENLOCK/AUX in GENLOCK/AUX in terminal BNC CGENLOCK/AUX in GENLOCK/AUX in switchDPBPR/TC PBPR/Time code switch EIEEE1394 IEEE1394 switchTop Section LScrew holes for mounting accessories DMONITOR Select Audio monitor selector switchFVTR VTR indicator GFULL Auto Full auto shooting FAS switchRecording and Image Out- put Formats Recording Composite RecordingIEEE1394 Status Screens Indications on the LCD Monitor and in the View- finderSetting Status Contents of Indications Status Screens in the Camera ModeIndications on the LCD Monitor and in the Viewfinder Cont’d ContentsLCD/VF3/4 menu screen. X See IDX Endura battery Voltage/remaining capacity %UB FF EE DD Tape time appearsND2 CH-1O O O O O O O O O \ \ \CH-2O O O O O O O O O \ \ \ Filter OFF ND1Indication Indication Contents Door Status Screen in VTR ModeHDV/DV input signal Video Format displayNDF Magnified Status Indications on LCD MonitorEXT Safety Zone Indication Camera mode only Alarm Message DisplayMenu Setting Screen Center Mark OFF Switching between the LCD Screen and Viewfinder DisplaySafety Zone HZ-ZS13B Basic SystemAttaching the Microphone Provided How to Attach the View- finderAttaching the Zoom Lens About SD Memory Cards Inserting an SD Memory CardTaking out the SD memory card Inserting an SD Memory CardAttaching the Tripod Base Provided only for U model AC Operation Charging the Built-in BatteryHow to charge the built-in battery „GY-HD250U Battery OperationAttaching the Battery Removing the BatteryPrecautions for the Battery Pack Precautions for the Battery Opera- tionRemaining Battery Power Display Operating Time with Battery PackCamera mode Turning the Power onTurning the Power on Turning the Power OFFMode Loading/Unloading the CassetteCassette Loading Unloading the CassetteSetting the Date and Time Style Setting and Displaying the Date and TimeDisplaying the Time and Date on the Screen Displayed Time Code/User’s Bit Time code input entered the IEEE1394 connectorSetting Displaying Time CodeDrop Presetting and Recording of Time CodeSetting Drop frame/Non-drop frame modeZero-resetting the Time Code or User’s Bit Data Presetting time code dataPresetting user’s bit data Operation Presetting the Time Code from the LCD ScreenPresetting User’s Bit Aborting Preset OperationInternal About Time Code ModePlaying Back Time Code Slave unit GY-HD250U/GY-HD251E/GY-HD110U/GY- HD111E Settings and OperationsConnections External ConnectionScreen Adjustment Viewfinder Adjustment Back Focus Adjustment Error messages White Balance AdjustmentWhite Balance Adjustment Adjustment procedureWhite Shading Adjustment Setting the REC Item Setting the Video FormatSetting the Frame Rate Item ND Filter Camera SettingsScreen Size 43/169 Mode Selection Adjusting Audio during Recording Audio Input Signal Selec- tionSelecting the CH-2 channel input connector Selecting the audio signal inputLOW/MIDDLE/HIGH Monitoring Audio during RecordingAbout the Focus Assist Function Basic Recording Opera- tionIf the Record-Standby Mode Contin- ues Header REC Function Record-Standby or Stop modeFunction/Initial Setting Executing the Header REC Function How to set the Header REC menu screenSearch Playback ProcedureFast-Forward, Rewind Audio Monitor Outputting AudioMIX PB Audio CH DVChange 1394 Switch Connecting the Video Signal CablesConnecting the IEEE1394 Cable Displaying AlarmsStatus Screen Display on the LCD Screen or Viewfinder Recording Composite Video Signals from an External DeviceAdjust SC and H Phase Using Genlock Func- tionsSynchronized Signals Dubbing with AV Devices Videocassette you want to dub HDV/DV DubbingOFF Settings Backup RecordingConnect a Remote Con- trol Unit RM-LP55/RM- LP57 Shutter Speed in 24p ModeNega OFF/ON Shutter Normal Remote Control Unit Functions ListLolux ALC+EEIMenu Screen Configura- tion Menu Screen Configuration Cont’d Setting Menu Screens TOP Menu Screen Video FORMAT1/2 Menu Screen Function/Setting bold characters indicate initial settingsSetting Description Letter Video FORMAT1/2 Menu Screen Cont’dNative Auto Terminal Setting B/P rInitial settings U model 7.5% E model 0.0% Video FORMAT2/2 Menu Screen3200K Menu ScreenHigh Middle108% NormalStandard Skin Color Range RotationSkin Color DET StopWhite Balance Menu Screen PresetREC Item Setting for Step Setting for Variable Switch Mode Menu Screen48K AUDIO/MIC1/2 Menu Screen20dB 50dBCH1/2 AUDIO/MIC2/2 Menu ScreenMIX Blue LCD/VF1/4 Menu Screen70-80% Mirror LCD Mirror ModeLCD/VF2/4 Menu Screen Image is displayed without invertingSEC LCD/VF3/4 Menu ScreenVoltage RGB LCD/VF4/4 Menu ScreenColor Drop TC/UB/CLOCK Menu ScreenInternal Header REC Menu Screen DisableVariation Range U model MM/DD/YY E model DD/MM/YY TIME/DATE Menu ScreenBARS+CAM DATE+TIMEBlink OTHERS1/2 Menu Screen3MIN 1394 OTHERS2/2 Menu ScreenDrum Hour Menu ALL ResetOTHERS2/2 Menu Screen Cont’d DR-HD100 A.OFFSC Coarse *1 SD H Phase *1HD H Phase Genlock Menu ScreenDisplaying the File Manage menu screen Loading a menu settings file100 File Manage Menu Screen101 Saving settingsError displays Initializing formatting an SD mem- ory card 102103 How to Use Skin DetailSetting the skin detail function color and range 104 How to Use Skin Detail Cont’dUsing the Skin Detail Function Outputs multi-format color bars 105Outputting Color Bars Display Status Action 106107 108 Error Code Error Details GY-HD250/GY-HD251 Remedy OperationSound interrupted once per second Blinking Pattern Remaining Battery/Tape109 Viewfinder ScreenRGB? TroubleshootingSymptoms Remedy 110111 How to Display the Hour Meter112 SpecificationsExcluding the CHU/CHE model External Dimensions unit mm113
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