Nikon SB-102 os Buku Petunjuk - Halaman 5

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PREPARATION-continued

Examining and lubricating the

O-rings:

To remove the

O-rings,

except those in the

synchro

socket and

sensor

socket

covers,

grasp the ring be-

tween your thumb and

forefinger.

Pinch your fingers

together as you

slide

them in the direction of the

arrow to create

slack

in the O-ring. Then grasp the

slack portion with your other hand and pull the ring

off (see

Fig. 1).

To remove the O-rings in the

synchro socket

and

sensor socket covers

use the edge of a credit card

or dive card or some thin

blunt,

instrument.

Never

use a knife

other sharp-edged object.

Push up

on the center of the

cover

with

fingertip (or pointed

object),

insert the card under the ring

and pull it up

to lift the O-ring out (see Fig. 2). Do not scratch the

O-ring in the

process.

2. Visually examine each O-ring for imperfections. If

any O-ring is damaged (by

tears,

cuts,

or other im-

perfections), discard it

immediately.

If any O-ring has

dirt,

sand

hair, or foreign matter on

it,

rinse the O-ring

in fresh water to remove it.

When lubricating the various parts of your flash unit,

use only the special non-water-soluble silicone

lubricant suppl ied with the speedlight.

Never use

other lubricants (such as Vaseline) which are water-

soluble

4. To lubricate the

O-rings,

smear a small amount of the

special silicone lubricant on your fingertips and then

gently run each O-ring between your fingertips

Never use a brush or

similar

object to apply the lubri-

cant

;

small hairs may fall into the channel and allow

water to enter the flash unit. While lubricating each

O-ring, examine it with your fingertips for imperfec-

Fig.

-----------------------------------

tions

If an O-ring is properly lubricated, it will glisten

and will not have

"gobs"

of lubricant on it.

To ensure the longest possible flash unit life, apply

lubricant whenever necessary. Lubrication protects

the O-rings from excessive wear; it also makes it

easier to attach or remove other parts.

5. Visually examine the channels into which the O-rings

fit to determine that each is clean and smooth. If any

channel is dirty, clean it with a non-lint-bearing mate

rial. Coat each channel with a thin film of lubricant

while being careful not to apply too much.

6. Reseat all of the O-rings with your fingertips by insert-

ing one

side

of the ring into the channel and holding it

in pOSition while rolling the other side of the ring into

place (Fig.

3).

To insert the O-rings into the channels

of the synchro socket and sensor socket covers

push up on the center of the cover with a fingertip

(or pointed object), place the ring over the channel

then press it down into place

Check that the O-ring

is not twisted and that each of its edges is properly

seated (see Fig.

4).

Check the surfaces which are opposite the O-rings

to determine that each is clean, smooth

and free of

foreign matter. Clean and lubricate the surfaces in

the same manner as the

channels.

When reattaching the parts with

O-rings,

be sure that

each O-ring seats properly and securely. All of the

O-rings must be properly aligned and not

"pinched."

Fig