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1. INTRODUCTION
8
1. INTRODUCTION
Adhere to the following precautions when using the head cleaning tape.
1. The tape runs for 10 seconds at a time in the PLAY mode. (The tape stops automatically and then the unit enters the SAVE
MODE. However, the display back light is not turned off.) Press the PLAY button after the cleaning tape is fully loaded.
2. Do not use the tape more than four times at the most for each cleaning.
3. The cleaning tape can be used approximately 100 times.
■ Use the following chart as a guide for periodical head cleaning.
Operating Low temperature Room temperature High temperature
environment 0˚C to 10˚C10˚C to 35˚C35˚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
Note 1) When used in a low humidity environment (10% RH to 30% RH), head cleaning should be conducted at intervals half of those
given in the above chart.
Note 2) If an ME80 tape is used immediately after head cleaning, the VTR warning (head) 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.
AUD LOCK
32k
CH 1
CH 2
48k
RF
SP
MENU
OVER
OVER
40 30 20 10 0
dB
"HEAD CLOG" indicator
"RF" indicator
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” on page 8.) 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.
●
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
“Precautions for Use of Head Cleaning Tape” on page 8.
● When dirt adheres to the heads of the GY-DV550, 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 OPERATE is turned OFF, or when the cleaning tape is
played back.
The GY-DV550 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.
1-3 Routine and Periodical Maintenance
Periodical Maintenance
Contents : Check or replace the following mechanical parts
according to the running time.
• 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 102.
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.
⅜: Clean, check and adjust.
ଁ: Clean and check. Replace as required.
ⅷ: Replace.
Running Time
500H
1000 H 1500H
2000H
Drum ass’y (including heads)
⅜⅜⅜ⅷ
Head cleaner ଁⅷଁⅷ
Tape guides & rollers ⅜ଁଁⅷ
Rotary encoder – ଁ – ⅷ
Belts & gears ଁⅷଁⅷ
Drive parts ⅜⅜ଁⅷ
Block Noise
1-4 Precautions for Use of Head Cleaning Tape