Nikon NR-5500 Manuel de réparation - Page 10

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TEST PROGRAM

♦ Continuous IRM rotation

Press the [IRM STOP] key to change the display into [IRM ROT], and the IR

motor will rotate continuously. Press the [IRM ROT] key again to change the

display into [IRM STOP], and the IR motor will stop.

* * *

When a motor have been stopped and noised because of the depth of

gearing, set the power to OFF once and start to rotate again.

* * *

After turning on the M. LED and rotating the IR motor, make optical

adjustments on the IR (image rotator), and check the accuracy of the

rotation and the position of the photo detector unit.

Connect the oscilloscpe to TP18 (XAL) and TP17 (YAL).

(3) TEST -03 : Model eye alignment and adjusting the alignment mark position

I-Alignment

position

display

T E ST-0 3

XAL :+ 0 0 0

YAL :+0 0 0

TOT :

0 0 0

END

-Alignment mark

fyH

SET

Press this

key to quit

TEST-03.

• Adjusting the model eye position

Adjust the position of the model eye tool installed on the centering tool so that the

following readings are obtained:

XAL = +000

YAL = +000

TOT = 093 approx. (OK if read-out is between 60 and 105)

Adjust the center position roughly while referring to the position of the asterisk " * "

mark in the alignment position display located at the upper left corner.

(Set the focus point to the fifth graduation of the scale in the model eye attaching

tool.)

Finally, install the dust - proof glass and adjust VR3 GAIN until TOT=080 ~085

reading is obtained.

• Adjusting the alignment mark position

After adjusting the model eye position, do the following if the blinking dot of the

M.LED is misaligned slightly from the alignment mark:

Move the alignment mark vertically with the [U] and [D] keys and horizontally

with the [L] and [R] keys until the blinking dot of the M. LED falls at the center of

the alignment mark.

After the adjustment is complete, turn DIP switch No. 5 located on the right side of

the Main body to the ON position and press the [SET] key.

The alignment mark position is then stored in the EEPROM and the message "SET

DIP SW5 TO OFF" is displayed. Return DIP switch No. 5 to the OFF position.

[6-4]

Repair Manual