JVC GY-DV500 Routine and Periodical Maintenance, Battery Pack to be Used, Condensation

"RF" indicator

1. INTRODUCTION

1-3 Routine and Periodical Maintenance

1. INTRODUCTION

1-5 Battery Pack to be Used

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.

The GY-DV500 can use any of the following battery packs.

●Flat shape type

●Anton-Bauer battery pack: Trimpack 13/14 Series Magnum 13/14 Series Compack 13/14 Series Propack 13/14 Series

To display the remaining battery power accurately, set the VCR Setup Menu item No. 396 BATTERY TYPE according

*An Anton-Bauer battery pack cannot be connected directly to the camera. It is necessary to mount the optional battery holder.

●Battery holder: Anton-Bauer QRQ27

For details on how to mount the battery holder, see page 37.

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

Periodical Maintenance

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

Running Time	500H	1000 H	1500H	2000H
Drum ass’y (including heads)				
Head cleaner				

to the type of the battery pack in use. (See page 69)

1-6 Condensation

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.

Tape guides & rollers				
Rotary encoder	–		–	
Belts & gears				
Drive parts				

: 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 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.

●If the unit has been cooled down in a cold place and is then carried to a warm place, the moisture contained in the warm air may adhere to the head drum or tape guides and be cooled into water droplets. This phenomenon is referred to as condensation (dewing). When this occurs, the head drum and tape guides are covered with droplets allowing the tape to be stuck to them, leading to tape damage.

●Condensation occurs in the following cases:

• When the unit is suddenly

moved from a cold place to a		Head drum
warm place.
• When a room heater has just
started or when the unit is
exposed directly to cold air from
an air conditioner.	Video tape
• When the unit is placed in a very
humid place.

Do not leave the videocassette inserted when moving the camera under conditions where the temperature environment changes.

●When condensation occurs in this unit, the DEW indicator on the display lights up, and the WARNING LED blinks red. (See page 86)

To remedy, leave the unit with the power ON and wait until the WARNING LED stops blinking red and the DEW indicator disappears from the counter display.

OPERATE/WARNING									DEW
									indicator
	CH 1
						OVER	AUTO OFF	DEW
		40 30 20 10			0 dB
	CH 2
						OVER
	32k			48k		PB	NDF	HOLD
	AUD LOCK		SP
	MENU

CH 1		OVER
40 30 20 10	0 dB		RF
CH 2		OVER

1-7 Characteristic CCD Phenomena

32k	48k
AUD LOCK	SP
MENU

"HEAD CLOG" indicator

1-4 Videocassette to be Used

●Use JVC’s videocassette tapes marked with MiniDV for this unit.

●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.

●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

Smear and Blooming

Due to the physical structure of a CCD it is possible to induce vertical streaking (called "smear") when shooting an extremely bright light source. Another effect is the expansion of light around a bright light or object (called "blooming").

The CCD employed in this unit is characterized by inducing very little smear or blooming. Nevertheless, please be careful when shooting a bright light source.

Smear

(Vertical pale streaking appearing at high luminous object)

High luminous object

(Electric light, sunlight, etc.)

	Blooming
	(Blurring in highlight)
Monitor screen

Moire or Aliasing

Shooting stripes or fine patterns may cause a jagged effect or a banding in fine mesh patterns.

White dots

High temperatures can cause CCD sensor pixels to malfunction with the effect of white dots in the image. This condition is conspicuous especially when gain is applied.

This is a characteristic of the charged-coupled device (CCD). As far as possible, use the unit under conditions where the temperature of the unit does not increase.

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For servicing

See the service manual page 2-7 “2.4.3 Cleaning”.

For the part No. of cleaning tape, see section “7.1 PACKING” on this service manual.