Nikon NR-5500 Operating instructions

Nikon
Repair Manual
NIKON CORPORATION
, JAPAN TOKYO

ptical System
n-n

C 3 ] NR-5 50 0 Repair tool list
J - 3 5 0 5 6
Centering too
J - 3 8 0 7 5
Centering tool
attachment
J-38054A
Optical adjustment
TV tool
J-38054B
TV camera
(NTSC type
& C mount)
Sketch
Remarks
Use with
J-38075
Centering tool
attachment
Use with
J-35056
Centering tool
Useful
for NR-5100
& NRK-8000
For C mount
TV camera
Use with
J-38054A
Optical adjustment
TV tool
With DC12V power supply cord
k BNC cable
J - 3 8 0 5 7
LED iIluminater
Use with
J-38075
Centering tool
attachment
A pair of
Infrared ray LED for TV tool
Visibler ray LED for eyepiece
(3 - l] Repair ManuaI

Sketch
Remarks
J - 3 8 0 5 5
Supplement lens
set
For Slit diaphragm
k Chopper slit
Use with
J-38054A
Optical adjustment
TV tool
or
J-35050
Eyepiece with
reticle
J - 3 5 0 5 8
Model eye attachint
tool
J-35058A
Model eye adapter
J- 3 5 0 5 0
Eyepiece with
reticle (15x)
J - 3 5 0 5 7
Eyepiece retaining
ring
Use with
J-35056
Centering tool
Use with
J-35058
Model eye attaching
tool
Use with
J-35057
Eyepiece retaining
ring
and
J-35056
Centering tool
Use with
J-35050
Eyepiece with
reticle
and
J-35056
Centering tool
C3 - 21 Repair ManuaI

Tool number
Name
J - 3 8 0 5 3
Centering telescope
Sketch
J - 3 9 0 1 1
Inspecting
telescope holder
J - 3 9 0 1 4
Inspecting
telescope
J - 3 9 0 1 5
Inspecting lens
(— 10Dpt.)
J - 3 9 0 1 6
Inspecting lens
(-MODpt.)
Remarks
Use with
J-35057
Eyepiece retaining
ring
and
J-35056
Centering tool
Use with
J-35056
Centering tool
A:for J-39014 Inspecting tele.
B:for J-35058A Model eye ada.
C:For J-39011A Holder
Use with
J-39011A
Inspecting
telescope holder A
and
J-35056
Centering tool
Use with
J-3 9 11A
Inspecting
telescope holder A
Use with
J-39011A
Inspecting
telescope holder A
[3-31
Repair Manua I

Tool number
Name
J - 3 5 0 6 6
Blackout curtain
Sketch
Remarks
J - 3 9 0 2 9
Model eye
for Main LED power
check
J - 3 9 0 3 3
Model eye set
J-38052A
High power model
eye ±22. OODpt.
J - 3 8 0 5 6
Cly. model eye
Use with
J-35058A
Model eye adapter
and
J-35058
Model eye attaching
tool
Also use with
J-35058A
Model eye adapter
and
J-35058
Model eye attaching
tool
Use with
J-35058A
Model eye adapter
and
J-35058
Model eye attaching
tool
[3-43 Repa i r ManuaI

TEST PROGRAM
[6] TEST PROGRAM
1 . Entering the Test Program Mode
(T) After turning on the Main switch, press the [PRINT] key while the sound “do, mi,
so, do” is being heard.
(2) After you hear the sound “do, mi, so, do, do, so, mi, do” followed by three beeps,
press the measurement button three times in succession.
(3) The NR - 5500 will enter the test program mode and display the test program select
menu screen. (The NR - 5500 will display the ordinary measurement mode screen if
you do not press the key at the proper time.)
RTST 0 1 0 5
0 A 0 F
EXIT
0 2 0 6 0 B
1 0
0 3
0 7
0 C 1 1
VER 1.0 0
0 4 0 8
0D 1 2
0 5
0 9 0 E
1 3
ROM version number
2 . Exiting the test mode
Press the [EXIT] key in the refractometer test mode select screen, and the NR - 5500
will exit the test mode and enter the measurement mode with the ordinary
measurement mode screen.
C 6 - 13
Repair Manual

3 . Refractometer Test Items
TEST PROGRAM
Check chopper frequency
and R/L. FOG and AX sensors.
Turn on M. LED.
Rotate IRM.
Not used.
Adjust alignment mark.
Turn on C. LED.
Turn on M. LED.
Not used.
Measure count offset value.
Measure CHA-FIL. CHB-FIL
peak values.
Not used.
Check monitor background
color.
Test printer operation.
Adjust automatic fogging
target position.
Adjust key display position.
Making of model eye count
table.
Adjust alignment offset.
Check a measurement system.
Initialize memory.
Check touch panel switches.
Adjust cylindrical axis
offset.
Check 1C card reader/writer.
Selection model eye mode and
human eye mode.
CHOP=524 ±1.0
Light occlusion = LO
MLED ON: M. LED lights up
continuously.
IRM ROT: Rotates continuously.
TOT=80—85: Dust-proof glass is
instal led.
TOT=90—95: Dust-proof glass is
not installed.
CLED ON: C. LED lights up
continuously.
MLED ON: M. LED lights up
continuously.
PHASE COUNT OFFSET=-200~+200
CHA=CHB=150 —200
0 V=000
Measurement switch
[PRINT] key
+: PRINT switch
-: Joy stickCmeasurement button)
Use the model eye set
(-18D- +22D).
Set to T = R±10.
Set to X = R± 10.
Set to Y = R±10.
R=1 2 0-1 3 5
A = B = 1 5 0 - 2 0 0
0 = 000
[X] [Y] = 60 when checking
[X] [Y] = 30 when adjusting
When EEPROM is replaced.
Verify that the switches can be
turned on and off normally.
Use J38056 cylindrical model
eye.
Valid only when an 1C card
reader/writer is built-in.
HUMN EYE = Human eye
MODL EYE = Model eye
+ 1.00-1.00 Dpt.
VR3 GAIN
VR6 TOT
VR5 XAL
VR4 YAL
VR7 CAL
C6- 2]
Repair Manual

6 . Test Item Description
TEST PROGRAM
® TEST - 00 : Displaying the chopper frequency and its variation, as well as R/L, FOG
and AX sensor status information
TEST-0 0
CH0P=5 2 4. 1 000. 2
R/L = L O FOG = L O AX =LO
Press this
key to quit
TEST-00.
Chopper frequency: CH0P=524,1 000.2
-Chopper frequency variation
Chopper frequency: OK if 524.0 ± 1.0 is obtained.
• R/L, FOG and AX sensors
L O (Low) : The sensor light is cut by the sensor plate.
H I (High) : The sensor light is not cut by the sensor plate.
(2) TEST - 01 : Turning on the main LED and rotating the IRM (image rotator motor)
continuously
END
TEST-01
MLED
1 RM
OFF
STOP
Main LED -
- IR motor
Press this
key to quit
TEST-01.
• Turning on the main LED (M. LED)
Press the [MLED OFF] key to change the display into [MLED ON], and the M.
LED will turn on continuously. Press the [MLED ON] key again to change the
display into [MLED OFF], and the M. LED will go off.
Keep the LED on for as short a time as possible because extended LED lighting
will shorten the LED life.
[6-31
Repair Manual

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
I 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

_ TEST PROGRAM
@ TEST - 04 : Turning on the C. LED (Calibration LED) and M. LED (Main LED)
Press this
key to quit
TEST-04.
• Turning on the C. LED: Press the [CLED OFF] key to change the display into
[CLED ON], and the C. LED will light up. This mode is used to check the CHA and
CHB signals.
• Turning on the M. LED: Press the [MLED OFF] key to change the display into
[MLED ON], and the M. LED will light up cotinuously. This mode is used to adjust
the position of the M. LED.
(5) TEST - 06 : Displaying the CHA and CHB phase count offsets and the CHA - FIL
and CHB - FIL signal peak values
Press this
key to quit
TEST-06.
• Displaying the CHA and CHB phase count offsets
This test displays the digital read - out of the phase difference offset after A/D
conversion is made when the C. LED is on. Make sure that the following readings
are observed:
Offset: - 00200 to +00200 ; Variation: 0010 or less
• Displaying the CHA - FIL and CHB - FIL signal peak values
This test displays the digital read - out of the peak values of the CHA - FIL and
CHB - FIL signals after A/D conversion is made when the C. LED is on.
CHA: 150 to 200 ; CHB: 150 to 200
Adjust VR7 CAL until the reading of the CHA - FIL and CHB - FIL peak values
falls between 150 to 200.
(it is advisable that this adjustment be carried out during TEST - 0D)
• 0V display: Make sure that the level measured is 000. If read - out is not 000, the
A/D converter is damaged.
C6 - 51
Repair Manual

© TEST - 08 : Checking the monitor background color
TEST PROGRAM
END
TEST-0 8
PUSH START KEY
Press this
key to quit
TEST-08.
• The background color of the monitor should change on each press of the
measurement button.
|—* Transparent (video) - ► Black - ► White -
Transparent: Raw signal from the camera.
Black : The screen background is set to black by the black level signal.
White : The screen background is set to white by the white level signal
(characters vanished in the background).
©TEST-09 : Testing the printer
Press this
key to quit
TEST-09
• Press the [PRINT] key, and the NR - 5500 will print 8 lines of data.
This test is used to check the printer (e.g., for missing characters) and to check
the print darkness.
To adjust the print darkness, use the VR1 on the CPU board, and then turn the
Main switch off and on to make the new setting valid.
(6-61
Repair Manual

TEST PROGRAM
(8) TEST - OA : Adjusting the automatic fogging mechanism
Press this
key to quit
TEST-OA.
♦ Positioning the automatic fogging target
Mount J39014 subjective inspection telescope and adjust the amount of offset to the
O.OODpt. position of the fogging target.
While observing the fogging target with the J39014, move it with the [PRINT] key
and measurement button (Joy stick) until the target position becomes clearly
visible. Select the 0.12 Dpt. step with the [STEP] key and adjust the offset.
[PRINT] key : Moves the fogging target in the plus diopter direction.
Measurement button : Moves the fogging target in the minus diopter direction.
(Joy stick)
[STEP] key : Adjust the increment by which the fogging target moves.
The distance of the fogging target travel is the offset amount (number of pulses)
and is displayed in the format “OFFSET -***.”
After establishing the offset, turn DIP switch No. 5 located on the right side of
the Main body to the ON position and press the [SET] key. The offset amount is
then stored in the EEPROM and the message “SET DIP SW5 TO OFF” is
displayed. Return the DIP switch No. 5 to the OFF position.
• Checking the fogging target movement
(The [PRINT] key and measurement button can not be used)
[ - 8D] key: Pressed to move the fogging target to the - 8.00Dpt. position.
[+14D] key: Pressed to move the fogging target to the +14.00Dpt. position.
C6 — 73
Repair Manual

TEST PROGRAM
(9) TEST - OB : Adjusting the key display positions
Press this
key to quit
TEST-OB.
• Adjust the discrepancy between the working area of the keys on the monitor touch
panel and the key position displayed on the screen.
[U] and [D] keys: Move the key display vertically.
[L] and [R] keys: Move the key display horizontally.
After adjusting the key display position, turn DIP switch No. 5 located on the
right side of the Main body to the ON position and press the [SET] key. The offset
amount 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.
© TEST - PC : Making of the model eye tool count table
Alignment
position
display
T E ST-0 C
X A L : + 0 0 0
YAL : + 0 0 0
TOT: 000
-Alignment mark
H-H
SET
- 2 6 D
0 0 0 0
DATA DATA
+ 1 -1
-Press this
key to quit
TEST-OC.
When it is necessary to remeasure the count table data for the model eye after
making optical adjustments on the auto refractometer unit, perform measurements
on the model eye tool concerned and restore the new count table to memory
(EEPROM).
Selecting the model eye
[INCR] key : Changes the power of the model eye tool displayed on the [SET]
key by 2.00Dpt. to plus side.
[DCR] key : Changes the power of the model eye tool displayed in the [SET]
key by 2.00Dpt. to minus side.
The NR - 5500 can show model eye tool power from - 26.00Dpt. to +26.00Dpt. in
2.00Dpt. step.
r->-26.00<—>-24.00-—>-22.00-—>-20.00-— . 0 . 0 0-^
I—>+26.00 <—>+24.00-—>+22.00-—>+20.00-— . + 2 . 00^
C6 - 8]
Repair Manual

TEST PROGRAM
• Model eye alignment
Place the model eye tool of the selected power on the centering tool and align it.
Focusing : Adjust the focus by pushing or pulling the J35058 model eye attaching
tool which installs the model eye.
Alignment: While observing the alignment mark, make a rough alignment of the
model eye position by turning the centering knob of the centering tool
until the asterisk * mark is positioned near the center of the display.
Then make a fine alignment while observing the “XAL: ” and “ YAL: ”
displays to obtain “XAL: +0.00" and “YAL: +0.00” respectively. Make
sure that “TOT: 09 3 or a similar value is also displayed.
• Measuring the model eye count
When you press the measurement button, the image rotator rotates and the count is
automatically measured. The measured count is displayed in the [SET] key. Use the
[DATA] key to change the displayed count or manually set the count.
[DATA +1] : Increments the counter by 1.
[DATA -1] : Decrements the counter by 1.
• Saving the model eye count
After establishing the count, turn DIP switch No. 5 located on the right side of the
Main body to the ON position and press the [SET] key. The count is then stored in
EEPROM and two short beeps are heards.
* Press the [INCR] key and select -18.00Dpt.. (-26.00Dpt.,-24.00Dpt.,
-22.00Dpt.,+24.00Dpt. and +26.00Dpt. are out of measurement range.
So they are not necessary to calibrate.)
Start counting at - 18.00Dpt. After the storage of the count for - 18.00Dpt. is
complete, press the [INCR] key and select - 16.00Dpt.
Then measure and store the count for - 16.00Dpt.
Continue measurement sequentially up to the measurement of +22.00Dpt.. After
storing all counts for measured model eyes, turn DIP switch No. 5 to the OFF
position.
Press the [PRINT] key, and the count values stored in the EEPROM will be printed.
AX OFFSET = 67-
FOG OFFSET = +0074 —
*** DP DATA ***
DP
COUNT D1FF.
-26D: 0000
+0050
-24D:
0050 —
+0020
-22D:
0070
+0030
-20D:
0100
TEST -11 Cylindrical axis offset
TEST - 0A Fogging target offset
Count for -24.00Dpt.
Difference between counts for
-22.00Dpt. and -20.00Dpt.
C6 - 9)
Repair Manual

TEST PROGRAM
©TEST-OD : Alignment offset adjustment
Press this
key to quit
TEST-OD.
• Adjusting the alignment signal offsets (with no room lamp)
“T”: Offset of the TOT signal caused by the amplifier system
Adjust VR6 TOT to set “ R ± 10”.
“X”: Offset of the XAL signal caused by the amplifier system
Adjust VR5 XAL to set “ R ±10 ”.
“ Y”: Offset of the YAL signal caused by the amplifier system
Adjust VR4 YAL to set “ R ±10 ”.
“R”: Reference voltage level for the alignment signal (2.5V)
Make sure that the reference voltage is
between 120 and 135 (not adjustable).
• Adjusting the peak value of CHA - FIL and CHB - FIL.
“A”: Peak value of the CHA - FIL signal when the C LED is on.
Make sure that the peak value is between 150 and 200.
“B”: Peak value of the CHB - FIL signal when the C LED is on.
Make sure that the peak value is between 150 and 200.
* To adjust “A” and “B” use VR7 CAL to measure the peak values for both
channels so that they fall within the permitted value range (same as in
TEST-06).
• 0V display
“0”: Make sure that “000” is displayed.
[6-10]
Repair Manual

TEST PROGRAM
© TEST-OE : Checking the measuring optical system adjustment
Press this
key to quit
TEST-OE.
• TEST - OE can be used to test the accuracy of adjustments made on the measuring
optical system (Image rotator and photo sensor)
• Model eye alignment
Place the model eye tool on the centering tool and align it.
Focusing : Adjust the focus by pushing or pulling the J35058 model eye
attaching tool which installs the model eye.
Alignment: While observing the alignment mark, make a rough alignment of the
model eye position by turning the centering knob of the cenrering tool
until the asterisk “ * ” mark is positioned near the center of the
display.
Then make a fine alignment while observing the “XAL: ” and
“YAL:” displays to obtain “XAL: +0.00” and “YAL: +0.00”
respectively.
Make sure that “TOT: 093” or a similar value is also displayed. If
this value is not displayed, adjust the VR3 GAIN control.
• Measurement
When you press the measurement button, the Image rotator rotates and
measurement starts. The asterisk mark in the alignment mark moves around
and the “XAL: ” and “YAL: ” values change as the Image rotator rotates.
• Displaying the measurement results
The NR - 5500 displays the total of the alignment offsets measured at 72 measuring
points at the 5 degrees steps.
[X][Y]: Totals of alignment offsets in X and Y directions
At checking : 50 or less
At adjustment: Adjust so that the total will be 30 or less.
X : Total of alignment offsets in X direction only
Y : Total of alignment offsets in Y direction only
* Calculation formula
[X] [YJ = -rr-r X ( | X L J + | Y i | )
0 4 i»l
X = 77 Z Xi (Signed)
6 4 i-i
Y = -TT-r X Y i (Signed)
6 4 i-i
(6-1 n
Repair Manual

TEST PROGRAM
© TEST - OF: Initializing memory (EEPROM)
Press this
key to quit
TEST-OF.
♦ This test initializes the EEPROM that stores the model eye count tables and offset
values by storing their system standard values. This test must always be conducted
whenever the EEPROM is replaced with a new one.
* Accidental execution of this test will overwrite all existing data with standard
values, resulting in accuracy deterioration in any subsequent measurements.
• Initializing EEPROM
Press the measurement button, and the confirmation screen will appear.
[YES] key : Press this key after setting DIP switch No. 5 on the right side of the
main body to ON to start initializing the EEPROM.
When initialization is finished, ’’SET DIP SW5 TO OFF” is
displayed.
Return DIP SW No.5 to the OFF position.
[NO] key : Press this key to cancel the initialization test.
The NR - 5500 will then quit TEST - OF.
[6-1 2]
Repair Manual

TEST PROGRAM
© TEST -10: Making functional c hecks on the touch pa nel keys
— Press this
key to quit
TEST-10.
• This tests permits the user to check the touch panel keys for normal operation.
♦ Checking the key function
Press the key to be checked. The key is normal if the corresponding display
switches from OFF to ON. The END key is normal when the NR - 5500 quits
TEST -10 normally.
* TEST - 0B may also be executed in conjunction with this test to check the
position of the key display frame.
© TEST -11: Adjusting the cylindrical axis offset
• Model eye alignment adjustment
Place J38056 astigmatism model eye tool on the chin rest.
Focusing : Focus the blinking dot of the M LED by sliding the Main body
forwards or backwards.
Positioning: Move the Main body by sliding and elevating until the blinking dot of
the M LED is positioned at the center of the alignment mark.
* Perform focusing and position alignment simultaneously. Before installing
the astigmatism model eye tool, clean it with cleaner liquid.
♦ Measuring the cylindrical axis
Press the measurement button to start measurement. The measured cylindrical
axis is displayed in the “ AXIS=” field.
OFF
OFF
OFF
END
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
[6-133
Repair Manual

TEST PROGRAM
• Adjusting the cylindrical axis
Using the [INCR] and [DCR] keys, adjust the cylindrical axis displayed in the
“ AXIS=” field matches the cylindrical axis value displayed on the mounting holder
of J38056 astigmatism model eye tool.
[INCR] key: Increases the cylindrical axis by one. The value displayed in the
“OFFSET^” field is also increased.
[DCR] key : Decreases the cylindrical axis by one. The value displayed in the
“OFFSET=” field is also decreased.
* * * Set a cylindrical axis sign to +C.
• Saving the offset value
When the offset value displayed in the “OFFSET=” field simultaneously during the
cylindrical axis adjustment is established, set DIP switch No. 5 to ON and press the
[SET] key.
The offset value will then be stored in the EEPROM and two short beeps will be
generated. Then reset DIP switch No. 5 to OFF.
© TEST -13 : Selection of the model eye mode and human eye mode and parallel
shifting of the spherical power
Press this
key to quit
TEST-13.
• Selection of the model eye mode and human eye mode
[HUMN EYE] : Must be selected to measure the human eye and model eye
provided with the instrument (normal measurement mqde).
(MODL EYE] : Must be selected to measure the model eye tools during
measurement accuracy test.
Press the [End] key to return to the refractometer test program
select screen and press the [EXIT] key to enter the normal
measurement mode screen.
The “R/L” display on the normal measurement mode screen
will turn to "M". Now you can measure the model eye tool
accurately.
* After the model eye tool measurement is complete, turn the Main switch off and
on to return to the normal human eye measurement mode.
• Parallel shifting of the spherical power
Use this test to shift the measured spherical power parallel.
[+000] key: Used to select the shifting amount. Each press of this key changes
the power displayed on the key top.
[6-141
Repair Manual