Sony Maintenance, Replacing other parts, Cleaning the video heads, Preparations for testing, Replacing the video heads, To perform the auto-check

Maintenance

Cleaning the video heads

Always use the special-purpose Sony DVM-12CLD Cleaning Cassette for cleaning the audio and video heads. Follow the instructions with the cleaning cassette carefully, as inappropriate use of the cleaning cassette can damage the heads.

Note

When the DVM-12CLD is inserted in the camcorder, only STOP, PLAY, REW and EJECT buttons function.

Replacing the video heads

If cleaning the video heads fails to restore picture quality, the heads may be due for replacement.

Keep a check of the hours of head drum operation: with normal use, the heads should need replacing after about 2,000 hours of use.

When the heads need replacement, contact your Sony dealer.

Check the hours of head drum operation in the DRUM RUNNING item on the HOURS METER page of the DIAGNOSIS menu.

Chapter	Replacing other parts
	For replacement of all parts other than the video heads,
7	contact your Sony dealer.
Appendix
	Using the auto-check function
	An internal check can be performed automatically using
	the auto-check function of the camcorder. Meanwhile, a
	one minute test recording and playback are also
	performed. Before shooting, it is desirable to perform this
	auto-check to check for problems in the VTR’s internal
	operations based on the results of the internal check
	displayed on the LCD monitor and on the quality of the
	video and audio recordings.

Preparations for testing

Make preparations as shown below.

•Connect a monitor to the MONITOR OUT connector (page 16)

•Connect an earphone or headphones to the EARPHONE connector (page 13)

•Prepare a cassette for test recording (page 47)

To perform the auto-check

1 Display the DEV STATUS 2 page of the DIAGNOSIS menu.

For details on menu operations, see “Basic menu operations” on page 93.

?D04 DEV STATUS2			TOP
AUTO	CHECK	:	EXEC
HUMID	TIMER	RESET:	EXEC

2 Press the MENU knob. Then turn the MENU knob to move b to AUTO CHECK, and press the MENU knob again.

The message “EXECUTE OK? YES b NO” appears.

D04 DEV STATUS2			TOP
EXECUTE OK?		YES	NO
AUTO	CHECK	:	EXEC
HUMID	TIMER RESET:		EXEC

3 Turn the MENU knob to move b to YES, and press the MENU knob.

The message “AUTO CHECK EXECUTING” appears on the viewfinder, and then the LCD monitor changes to the AUTO CHECK display. Follow the instructions that appear on the LCD monitor.

<AUTO	CHECK>
EJECT			If there is a cassette in
			the camcorder, follow
PLEASE	EJECT	CASSETTE	the instructions and
(PUSH	EJECT	BUTTON)
			eject the cassette.
<AUTO	CHECK>
LOAD
INJECT REC TAPE

120 Maintenance