Cleaning, Lubrication, Tape, Drive

2. Cleaning

Regular cleaning of the transport system parts is desirable but practically impossible. So make it a rule to carry out clean- ing of the tape transport system whenever the machine is serviced.

When the video head, tape guide and/or brush get soiled, the playback picture may appear inferior or at worst disap- pear, resulting in possible tape damage.

(1)When cleaning the upper drum (especially the video head), soak a piece of closely woven cloth or Kimu-wipe with alcohol and while holding the cloth onto the upper drum by the fingers, turn the upper drum counterclockwise.

Note:

•Absolutely avoid sweeping the upper drum vertically as this will cause damage to the video head.

(2)To clean the parts of the tape transport system other than the upper drum, use a piece of closely woven cloth or a cotton swab soaked with alcohol.

(3)After cleaning, make sure that the cleaned parts are com- pletely dry before using the video tape.

3. Lubrication

With no need for periodical lubrication, you have only to lu- bricate new parts after replacement. If any oil or grease on contact parts is soiled, wipe it off and newly lubricate the parts.

Note:

•See the “mechanism assembly” diagram of the parts list for the lubricating or greasing spots, and for the types of oil or grease to be used.

•Grease is not required for a replacement cassette hous- ing assembly, as this has been applied at the factory.

4.Suggested servicing schedule for main components The following table indicates the suggested period for such service measures as cleaning,lubrication and replacement. In practice, the indicated periods will vary widely according to environmental and usage conditions.However, the indi- cated components should be inspected when a set is brought for service and the maintenance work performed if neces- sary. Also note that rubber parts may deform in time,even if the set is not used.

System	Parts Name	Operation Hours
System	Parts Name	~1000H	~2000H
		~1000H	~2000H
transport	Upper drum assembly
transport	A/C head
	A/C head
	Lower drum motor assembly
	Pinch roller arm assembly
Tape	Full erase head
Tape	Tension arm assembly

		Guide arm assembly
		Capstan motor

		Belt (Capstan)

		Belt (Loading motor)

	Drive	Loading motor

		Reel disk (supply, take up)
		Reel disk (supply, take up)

		Clutch unit (supply, take up)

		Worm gear assembly

		Control plate

		Slide plate

	Other	Brush

		Tension band assembly
		Tension band assembly

		Rotary encoder

¤: Cleaning

R: Inspection or replacement if necessary

Table 2-1-5a

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