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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
4030 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
For servicing
See the service manual of the GY-DV500 (No. 60125) page 2-5,
“2.4 MAINTENANCE AND INSPECTION OF MAJOR PARTS”.
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1. INTRODUCTION
7
1. INTRODUCTION
1-2 Precautions for Proper Use
●
Do not point the lens or viewfinder directly at the sun or other strong light source.
• Eye damage could result.
• If the lens or viewfinder is left pointed at the sun, rays may collect inside the unit and cause damage or a fire.
●
When carrying the camera, be sure to hold the carrying handle. Holding the lens or viewfinder may result in damage.
CAUTION :
●
Supply voltage
Make sure that the power is between 11 V and 15 V DC. If
the power voltage is too low, abnormal color and increased
noise may occur. Do not exceed 15 V DC in any case, or the
unit could be damaged.
●
Allowable ambient temperature and humidity
Be sure to use the unit within the allowable temperature range
of 0°C to 40°C and a relative humidity of 30% to 80%. Using
the unit at a temperature or humidity outside the allowable
ranges could result not only in malfunction but the impact on
the CCD elements could be serious as small white spots
may be generated. When storing the GY-DV550 for a long
time, the storage temperatures should be -20
°C to 60°C
.
●
Strong electromagnetic waves or magnetism
Noise may appear in the picture or audio and/or the colors
may be incorrect if the camera is used near a radio or
television transmitting antenna, in places where strong
magnetic fields are generated by transformers, motors, etc.,
or near devices emitting radio waves, such as transceivers
or cellular phones.
●
Use of wireless microphone near the camera
When a wireless microphone or wireless microphone tuner
is used near the camera during recording, the tuner could
pick up noise.
●
Avoid using or placing the unit in places;
• subject to extreme heat or cold;
• with excessive dirt or dust;
• with high humidity or moisture;
• subject to smoke or vapour such as near a cooking stove;
• subject to strong vibrations or on an unstable surface.
• also do not leave the unit for long hours in a parked car
under direct sunlight or near room heating equipment.
●
Protect the unit from being splashed with water (especially
when shooting in the rain).
●
Protect the unit from being wet when shooting on a beach.
In addition, salt and sand may adhere to the camera body.
Be sure to clean the camera after use.
●
Protect the unit against penetration of dust when using it in a
place subject to sandy dust.
●
Optical performance of lens
Due to the optical performance of the lens, color divergence
phenomena (magnification chromatic aberration) may occur
at the periphery of the image. This is not a camera
malfunction.
●
Noise may appear in the viewfinder when switching between
the playback picture and the EE picture.
●
Setup level
The video signal of the unit's video output is provided with a
setup level when shipped from the factory. To turn off setup,
set SETUP in the Camera Setup screen to OFF.
●
Use the unit in an upright position.
If placed on its side, heat release efficiency will deteriorate,
adversely affecting the tape transport. Depending on
circumstances the tape may also be damaged.
●
Vibrations
Colors may fail to appear during VCR playback in locations
subjected to vibrations.
●
Precautions for transportation
Do not drop or hit the unit against a hard object.
●
Remove the videocassette before transporting the unit.
●
Do not insert an object other than a videocassette in the
cassette insertion slot. Be sure to close the cassette cover
when the unit is not to be used for a long period
●
Do not set the OPERATE switch to OFF or remove the power
cable during recording or playback. Otherwise the tape may
be damaged.
●
The sensitivity level of the provided microphone is set lower
than the reference input (- 60 dBs) setting.
●
When the unit is not in use, be sure to set the POWER switch
to OFF in order to reduce power consumption.
●
Cleaning the body: Wipe body with a dry, soft cloth. When it is
extremely dirty, soak the cloth in a solution of neutral
detergent, wring it out and then wipe. To prevent deformation
of the body, etc. and to avoid operation hazards, do not allow
volatile liquids such as benzine and thinner to touch the body,
and do not wipe it with a cloth soaked in such a liquid.
●
The camera may be unstable in the period immediately after
the power is turned on, but this is not a malfunction.
●
If a tape containing recorded PAL signals is played back, the
GY-DV550 automatically enters the STOP mode. If this
happens, remove the videocassette so that the unit returns
to its normal state.
●
When turning on the power with the tape inserted or after
loading a tape, the built-in head cleaner will emit a sound
while operating. However, this is not a malfunction of the unit.