1. INTRODUCTION
1-2 Routine and Periodical Maintenance
The
Head Cleaning
●To maintain beautiful pictures and sound, be sure to use a head cleaning tape to clean the head periodically. (Read the “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. Read the precautions and instructions 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, edit search, and recording check using the RET button on the lens section.
Periodical Maintenance
Contents : Check or replace the following mechanical parts according to the running time.
Running Time | 500H | 1000 H | 1500H | 2000H | 4000H |
Drum ass’y (including heads) | |||||
Head cleaner | |||||
Tape guides & rollers | |||||
Reel disc and tension bands | – | – |
–: Check
: Clean, check and adjust.
: Clean and check. Replace as required.
: Replace.
•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 100.
For consultations related to the maintenance planning or cost, please contact the person in charge of professional video equipment at your nearest
1-3 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 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 the unit 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.
Note 1) When used in a low humidity environment, head cleaning should be conducted at intervals half of those given in the below chart.
Note 2) If an ME80 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.
Operating | Low temperature | Room temperature | High temperature |
environment | 0˚C to 10˚C | 10˚C to 35˚C | 35˚C to 40˚C |
|
|
|
|
Yardstick for use | 1 to 2 times | 1 to 2 times | 1 to 2 times |
of cleaning tape | every 5 hours | every 20 to 30 hours | every 5 hours |
7