JVC GY-DV500U GY-DV500 User Manual - PDF (4,089KB) - Page 8

1. INTRODUCTION 1-3 Routine and Periodical Maintenance The GY-DV500 incorporates precision mechanical parts, which will collect dirt, wear out and deteriorate as the unit is used. On the other hand, when the unit has been used for a long period in a normal environment, the heads, drums and tape transport mechanisms also collect dirt deposited on them. Furthermore, dust which penetrates the inside of the VCR section especially during outdoor use will promote the wear and deterioration of mechanical 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, it is also recommended to apply periodical maintenance (inspection) to prevent troubles that may be caused by 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. (Read the separate sheet "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 ● Use the provided head cleaning tape. Do not use head cleaning tapes other than specified. For instructions on how to use the head cleaning tape and precautions for its use, read the separate sheet "Precautions for Use of Head Cleaning Tape". ● When dirt adheres to the heads of the GY-DV500, the following indications appear during playback and recording check using the RET button on the lens section. • "RF" appears on the display panel. • "HEAD CLOG" appears on the counter display. • "VTR WARNING (HEAD)" appears in the viewfinder. ● If this kind of indication appears, please stop the recording. Head cleaning is required. This indicator disappears when the POWER is turned OFF, or when the cleaning tape is played back. "RF" indicator CH 1 OVER 40 30 20 10 0 dB CH 2 OVER RF 32k 48k AUD LOCK SP MENU Periodical Maintenance Contents : Check or replace the following mechanical parts according to the running time. Running Time Drum ass'y (including heads) Head cleaner Tape guides & rollers Rotary encoder Belts & gears Drive parts 500H 1000 H ⅜: Clean, check and adjust. ଁ: Clean and check. Replace as required. ⅷ: Replace. 1500H 2000H • The maintenance contents vary depending on the operating environment and method. Therefore, the above data should be considered as a reference. Time management The accumulated running time of the unit can be confirmed with the hour meter display (which shows the accumulated drum running time). For details, see "HOUR METER DISPLAY" on page 92. For consultations related to the maintenance programming or cost, please contact the person in charge of professional video equipment at your nearest JVC-authorized service agent. "HEAD CLOG" indicator 1-4 Videocassette to be Used ● Use JVC's videocassette tapes marked with MiniDV for this unit. Please use DVM60 or DVM30 type videocassettes. ● Videocassettes cannot be used upside down. ● Avoid storing a videocassette with unevenly wound tape, as this may damage the tape. Rewind it to the beginning before placing a cassette into storage. ● Store videocassettes in a place with little humidity and good ventilation where mould does not form. ● After a videocassette tape has been used repeatedly, it becomes unable to maintain full performance due to an increase in noise caused by dropouts, etc. Do not continue to use a dirty or damaged tape, as this will reduce the rotary head life. ● Note that if an ME80 videocassette is used at low temperatures, block noise tends to occur due to head contamination. 8 ● Videocassette tapes marked MiniDV are provided with a switch on the back for use in preventing accidental erasure. ● Slide the switch to SAVE to protect the required recording in the tape from being overwritten. ● To record on the tape, slide the switch to REC. Switch REC SAVE