Nikon 50i and E100 manual Repair ANO Adjustment B, F, ER and UW-tube

	R-4106.A
REPAIR ANO ADJUSTMENT	1. Unclear shadows ap1>91.1r in the viewiield during observation
	2. Brightness fall-off in the circumferen~ of viewfield

REPAIR ANO ADJUSTMENT (B, F, ER and UW-tube)

1.Unclear Shadows Appear in the Viewfield During Observation

Cause: ( 1) Finger marks, large dust or other dirt remain on the light incidence or exit surface ot prism @ (@ and @) (other part numbers added in parenthesises in this way means those used for UW-tube).

(2)Separation of light retlecting silver layer on the prism.

(3)Crack in the prism.

<Repair and Adjustment >

ln the case of (!)	Wipe off dirt usmg a doth or lens tissue soaked with a triíle of absolute alcohol
	(ethanol or methanol).
ln the case of (2) or (3)		Replace the prism.

Procedure

1)Referring to Disassembly procedure (P.22, 23), disassemble the depression prism unit.

2)C1ean prism @ (@ and @).

3)For replacement, strike out the prism @ C@) and @) with a wooden hammer. Stick the new one.

4)When replacing, do positioning of the new prism, referring to adjustment (P. 40 - 42 and 46).

2.Brightneu Fall-offin the Circumferenca of Viewfield

Cause: Incorrect positions of prism 1§ (@ and G9 )

<Repair and Adjustment > Make positional adjustment.

Procedure

Refer to the procedure mentioned above in l.

- 35 -