REFERENCE SECTION

SENTINEL MAIN SCREEN OPERATIONS

This section covers the operation of the keys on the keyboard - how to use them and what they are used for. The main screen information is also explained.

LAMP ON AND OFF CONTROL

Use to turn the lamps on and off. When in White Light mode the lamps turn off immediately. When the Starlite is in Filtered Color mode, the lamps will only turn off if the head is on perfect color. This may cause a delay of a few seconds, which is normal.

EXPOSURE TIME ENTRY

Use to enter an exposure time in seconds. The allowable range is from .1 to 999.9, however we recommend keeping the exposure time above 1 second for optimum performance. NOTE: The displayed density will change when the exposure time is changed unless the Time-to-Density Correction preference is Inactive. See the section for the Starlite Preferences menu .

MAKING AN EXPOSURE

Use to start an exposure. An exposure starts with the lamps turning on for a split second before the Colorhead's shutter opens. When the shutter opens, the internal timer will start to count down to 0 (zero), clicking every second for dodging and burning. The print counter will count up or down one exposure, depending on the how the print counter target is set.

Be sure that the head is not in White Light mode when making an exposure. If the display reads "FILTERS OUT," simply press to return to filtration Mode. Also, be sure the color filtration is set before trying to start an exposure. If the filtration is not set when is pressed, the colorhead will beep and the keypad's display will read "FILTERS NOT SET." This indicates that the filters are in an unknown state. This is remedied by entering a color correction value for any of the Density, Cyan, Magenta, or Yellow settings. Another quick way to do this is to turn the lamps on, then off, by pressing twice.

DENSITY ENTRY

To enter a new density value press , enter the numerical value for the new density and press . You can also adjust the density by pressing and then using or to increase or decrease the density value. When you press the light will come on, the colorhead will adjust for the new density, and the light will turn off. If the light source can not make the density change, the exposure time will be adjusted automatically to make up for the density change using time.

CYAN, MAGENTA, AND YELLOW FILTRATION ENTRY

The CMY values can be entered using , , and keys. The operation is identical for all three color channels. Press the appropriate color key and then enter the numerical value for the filtration, or use or to increment or decrement the value. Press to complete the filtration entry. The lamps will turn on as the filtration is set, turning off only after a perfect filtration is reached. A few seconds delay while this occurs is normal. The light source does have limits on the filtrations it can reach, and if you enter a value outside the limits the filtration will be adjusted to closest value it can reach. The limit values will also change depending on what the various offsets are set to. NOTE: The CMY values are always normalized to the lowest filtration value (usually Cyan). One of the three colors will always be forced to 0 and indicated by a '--'in the display.

PRINT COUNTER OPERATION

On the main screen, the current print count is displayed. The count may be reset using the print count selection in the main menu . The print counter can count up or down depending on your preference. For example if you want to make 10 prints, you can enter Quantity 10 in the main menu , which will tell the Colorhead you want to make ten prints. Each exposure will decrement the count on the main screen until the count reaches 0 (zero). Upon reaching 0 the keypad beeps three times to let you know the 10 prints are done. Entering a value of 0 (zero) into the counter will cause it to merely keep track of the number of prints made thereafter. With each exposure the count will increment until the count reaches 999 when the count stops.

JOB MEMORY SAVE

The Sentinel currently has 200 job memory channels that can be used to store specific print jobs. The information stored is the D,C,M, and Y filtration settings, exposure time, Emulsion number, and f-stop. The Autofocus setup is also saved; this includes the print size or magnification, carrier, negative size, lens, and easel information. The f-stop is used only for the operators reference and is not used in any of the calculations. To save a job press . You will be prompted for a job number: enter a five digit number of your choice, then press . If that number is already in use you will be asked if you would like to over-write the old job information. Next you will be prompted for a f-stop value, you may enter a f-stop value if you wish, it will be displayed when the job is recalled. It is a good practice to always save the setup during test printing to ensure that you are printing with the latest print data.

JOB MEMORY RECALL

To recall or load a job that was previously saved press . You will be prompted to enter a job number. Enter the job number and press . If a previously-stored job by that number is not found the display will show "DOESN'T EXIST, TRY AGAIN." When a job is recalled the light will turn on and the filtration will be put in, as the recalled f-stop is displayed for a few seconds. The enlarger will also move into position for the stored print size and focus. The display will then go back to the main screen and light will turn off. The Sentinel is now ready for printing.

LCD DISPLAY AND KEY BACKLIGHTS CONTROL

Use to turn the keypad backlighting on and off. When in the off position and are dimly lit so you can easily find them in the dark. On the back of the keypad you may adjust the backlights brightness with the small adjustment knob. The LCD display contrast can be adjusted on the back of the keypad with a small slotted screwdriver. Large changes in room temperature may cause the display contrast to change.

DENSITY PROBE OPERATION

The baseboard Density Probe is primarily used to keep the colorhead Density calibrated. An 8x10 print that prints at D64 should also yield the same print density when enlarged to 11x17 and the Density should still read D64, the difference is measured by the Starlite, which needs to make up for the light falloff by increasing the time or increasing the light output. This adjustment is done using the Density Probe. When you click on the Density Probe button, the lamps will turn on while the density at the baseboard is measured. During this time, the keypad will display the word "PROBING..." in the upper left area of the screen. The probing cycle will finish automatically when a stable probe reading is taken. At that time the lamps will be adjusted to the correct density and then the lamps will switch off.

AUTOFOCUS / MANUAL-FOCUS CONTROL

Use to turn the Autofocus mode on and off. The Autofocus mode is active when "SIZE" is displayed in the upper right corner of the main display. When the display reads "MANUAL" the Autofocusing system is inactive. When in Manual mode you may focus the enlarger using or in the numeric keypad area. (See next section.)

ZOOMING AND JOGGING THE ENLARGER

There are two sets of , and that are used for jogging (or zooming) the enlarger up and down. and next to are the main zoom keys and move the enlarger up and down the column in both Manual and Autofocus modes. and in the numeric keypad area are active only in Manual-focus mode, and are used for small movements to focus the enlarger. can be used in conjunction with either set of or . You can hold down or for continuous movement or tap the keys for small movements.

CARRIER LOADING OPERATION

The Sentinel is equipped with an automatic carrier loading system to allow easy changing of the carrier even when you are making prints with the enlarger near the top of the column. When you press and simultaneously, the enlarger will move to the load position, so you can load or unload the carrier. When finished, press and the enlarger moves back to the exact position it was before the loading, ready for printing. You should pick a convenient load position and set it using the Set Load Position preference. (See Sentinel Preferences section.)

AUTOSIZING OPERATION

You can size a print by using the zoom keys or you can use to autosize to a specific printsize or magnification, which is the fastest way to move the enlarger to a given size. Press and the display will prompt for either magnification or print size, whichever was currently displayed on the main screen. To switch between print size and magnification entry press again. When in Print Size Entry mode you may press to toggle between inches or millimeters. Enter the new print size or magnification and press . The enlarger will move to that position and go into Autofocus mode, unless it hits a limit first, in which case it will stop at the limit. Note that the printsize is based on the magnification multiplied by the negative size, and the negative size can be selected using the Sentinel's main menu .

While zooming the image or using to move the enlarger to a new size you will notice that the light comes on and changes a few seconds after the enlarger stops at a new position. This is the Size to Density Correction in the Starlite adjusting the lamps density up or down to achieve a constant print density regardless of what size the enlarger is at. This automatic correction only happens when the Size to Density mode is set to Active in the Starlite Preferences menu . This feature makes it unnecessary to re-test for changes in print size.

VIEWING THE AUTOFOCUS SETUP

Press to display the current Lens, Carrier, Easel and Negative size currently in use. Use this feature for double-checking which Carrier and Easel are selected. This can be useful if the enlarger is not focusing sharply because the correct Carrier or Easel is not selected.

SENTINEL ENLARGER MENUS LAYOUT

SENTINEL MAIN MENU

ACCESS WITH THE 'MENU' KEY ON THE SENTINEL KEYPAD.

This section covers the Sentinel Enlarger's main menu , which is displayed by pressing on the keypad. As the name suggests, it is the main menu, through which several commonly-used functions may be performed. It also gives access to the enlarger's sub-menus, allowing total control of the Sentinel Enlarging system.

1: STARLITE MENU OPTIONS

2: NEGATIVE SIZE

3: EASEL SELECT

4: CARRIER SELECT

5: SENTINEL PREFERENCES

6: SENTINEL CALIBRATION

7: SENTINEL MAINTENANCE

8: SENTINEL DIAGNOSTICS

->1: STARLITE MENU OPTIONS

To access the Starlite Colorhead main menu press here. From the Starlite main menu you can access all of the options specific to the colorhead, such as Emulsion offsets, Process offsets, Colorhead diagnostics etc. Please refer to the Starlite main menu section for more information.

->2 : NEGATIVE SIZE

To enter a negative size or an image crop size, use this selection. The negative size is used when the main screen is reading out a print size (at the baseboard or easel) which is calculated by multiplying the negative size by the current magnification. You may enter a negative size in either inches or millimeters, using to toggle between Imperial and Metric measurements. First select the correct units and then enter the negative size. You do not have to use the size of the negative format (e.g. 35mm or 4in), you can measure a section of the negative and enter that dimension, if that is the critical dimension for cropping the image. As soon as the new dimension is entered, the print size will show the correct new size on the main display.

->3 : EASEL SELECT

To select an Easel offset use this menu function. You will be presented with a list of available easels, starting with "NONE" and then letters 'A' through 'H'. Selecting "NONE" will load an Easel offset of zero which means no easel is being used. For accurate autofocus and autosizing each easel must be designated with a letter and setup using the Easel Setup procedure (See Sentinel Calibration Menu section). Whenever an easel is used you must select it to allow the autofocus system to compensate for the easel height.

->4: CARRIER SELECT

To select a Carrier offset use this menu function. Like the Easels, Carriers must be setup using the Carrier Setup procedure (See Sentinel Calibration Menu section). Select the appropriate Carrier offset using this menu function. The carriers are listed by format size, for convenient reference.

->5: SENTINEL PREFERENCES

To configure your Sentinel Enlarger to your specific needs, go into this sub-menu and make the appropriate changes to the factory set preferences. Some of the preferences are to set the top limit if you have a low ceiling, and to set the carrier load position for easy access to negative carrier stage. You can also activate or deactivate the security lock in the Preferences menu . (See Preferences Menu section.)

->6 : SENTINEL CALIBRATION

This sub-menu allows the setup of the autofocus systems of the Sentinel Enlarger. In this menu you may setup the Lens, Easels and Carriers. This is necessary before the Autofocus can be used.

->7 : SENTINEL MAINTENANCE

Use the selections in this sub-menu to erase job memories and perform other memory maintenance operations.

->8: SENTINEL DIAGNOSTICS

Use the selections in this sub-menu to perform troubleshooting operations on the autofocus systems.

SENTINEL PREFERENCES MENU

ACCESS THROUGH ITEM 5 IN THE SENTINEL MAIN MENU.

1: SET LOAD POSITION

2: SET TOP LIMIT

3: CLEAR TOP LIMIT

4: SET BELLOWS LIMIT

5: CLEAR BELLOWS LIMIT

6: ENTER ENLARGER ID #

7: SET SECURITY LOCK

A NOTE ABOUT SENTINEL PREFERENCES: Since there is a possible chance of damaging the enlarger through improper Preference settings, a security lock is implemented to prevent a novice operator from accidentally changing a preference without referring to the instruction manual. This lock must be disabled before any other changes can be made.

->1: SET LOAD POSITION

Select this item to set (memorize) the carrier loading position you would like the enlarger to go to for convenient access of the negative carrier. To set the load position, first jog the enlarger to the preferred position, anywhere along the column, and then select this menu item to memorize the position. During normal operation, the Sentinel may be called to this loading position at any time by pressing and at the same time. To return to normal operation, press , and the Sentinel will return to it's previous position, ready for printing.

->2 : SET TOP LIMIT

To set the top limit of the enlarger's travel lower than the factory setting, use this menu selection. If you have a low ceiling you should set the top limit about an inch or two short of the colorhead hitting the ceiling. To set the limit, first jog the enlarger to the desired maximum height, then select this menu item to set the new top limit. Not setting the top limit may cause damage to the enlarger or your darkroom if the colorhead crashes into the ceiling.

->3 : CLEAR TOP LIMIT

Use this menu item to clear the top limit setting. This may be necessary if the limit was accidentally set too low.

->4 : SET BELLOWS LIMIT

Use this menu item to set the maximum bellows separation distance. This distance is factory set to the correct amount and should not require any changes. If you choose to modify your bellows you can change the limit by jogging in Manual-focus mode to open the bellows and then select this menu function to set the limit at that distance. WARNING: If the bellows separation is allowed to go further than about 16 inches you will potentially damage the Lens Stage Cable (behind the Bellows) or the Bellows encoder module.

->5 : CLEAR BELLOWS LIMIT

Use this menu item to clear the bellows separation distance. Selecting this item can potentially damage the enlarger, if you do not immediately set a new limit position. See Warning in previous item.

->6: ENTER ENLARGER ID NUMBER

Use this menu item to set the enlarger identification number. This is only used when the enlarger is setup on a lab network system with multiple enlargers connected to a central computer.

->7 : SET SECURITY LOCK

Use this menu selection to turn on or turn off the security lock feature. When the security lock is on, the operator is not allowed to Setup Lenses, Carriers, Easels or modify any Preferences or Calibrations since accidental use of those procedures can cause a great deal of lost time in re-setting up or possibly damage the equipment. To turn off the security lock, select this menu item, then press and then press . The lock remains off until it is turned on or until the enlarger power is switched off.

SENTINEL CALIBRATION MENU

ACCESS THROUGH ITEM 6 IN THE SENTINEL MAIN MENU.

1: SETUP LENS

2: SETUP EASEL

3: SETUP CARRIER

4: SETUP DROP TABLE

A NOTE ABOUT THE CALIBRATION MENU: The procedures in the Calibration menu are relatively time consuming setup procedures that should only be performed once for each item. To reduce the chance of accidentally overwriting a good setup, the Security Lock must be turned off before these setups can be performed. (See Preferences section.)

->1 : SET UP LENS

Use this menu item to setup a lens for proper autofocus operation. Each lens is setup separately, and only one time. If a new lens is installed that lens must be setup even if it is labeled the same as the old lens. Setting up a lens entails focusing at a small size, then at a large size. To setup a lens follow these steps:

1. At the main screen, rotate the lens turret to select the lens to be setup, wait to hear the double click.
   
2. Remove the easel if you are currently using one and select Easel "NONE" from the "SELECT EASEL" menu .
   
3. Place the ZBE setup film in the 4 X 5 glass carrier, and select the 4 X 5 glass carrier from the main menu. Install the carrier.
   
4. Select "SETUP LENS" from the Calibration menu .
   
5. Enter the lens focal length. This is used as name reference only, the true focal ength will be calculated automatically.
   
6. Use , and to jog the enlarger into focus at a small size, which is any position in the lower 10 inches of travel of the enlarger.
   
7. However, do not jog to a size that is smaller than Magnification = 1.8, doing so will cause the focal length to be calculated accurately.
   
8. Use a grain focuser to achieve perfect focus. Use single taps of or in the numeric keypad to fine focus.
   
9. Once on exact focus, press .
   
10. Measure the magnification using an accurate ruler or scale, preferably in millimeters. A transparent ruler works best for easy reading. Measure the distance between the alignment marks on the setup film. Use the appropriate marks for each lens, using the wrong marks will yield an incorrect measurement, due to lens distortion.
    

For 135mm to 150mm lenses use the 100mm marks.

For 80mm lenses use the 50mm or 10mm marks.

For 50mm lenses use the 10mm marks.

IMPORTANT NOTE: Accurate measurement of the magnification will make or break the lens setup. Place the ruler on the baseboard, aligning it to the left edge of the marks projected onto the baseboard, then read the distance to the left edge of the other mark. If your ruler is marked in one millimeter increments, try to estimate the distance to a tenth of a millimeter, that is the accuracy necessary for a good setup.

Enter the magnification ratio. The magnification is the measured distance at the baseboard divided by the distance indicated on the setup negative.

For example, you may be setting up a 150mm lens at about 1.9 X 1, you will be looking at the 100mm marks projected down on your ruler. You may clearly measure the distance as 190mm but you must take a guess down to a tenth, and you may see that the measurement is closest to 190.5mm. In that case the magnification you enter is 1.905 (190.5mm/100mm).

1. Next jog up the column to position in the top 10 inches of the column.
2. Focus to grain sharp, and press .
3. Measure the magnification at this large size and enter the value.

After the large magnification is entered, the focal length is calculated and the enlarger goes through a referencing procedure. After referencing, the lens setup is complete, and the lens will focus at all points along the column. If it does not focus properly or magnification displayed on the keypad is not accurate, do the lens setup procedure again, being particularly careful about measuring and entering the correct magnification.

->2 : SETUP EASEL

Each easel must be setup to allow the autofocus system to properly calculate the image position when the easel is in place. To program an easel follow these steps:

1. Select the shortest lens available (the 50mm lens you already setup).
   
2. Install and select the 4 X 5 glass carrier with the ZBE setup film.
   
3. Select easel "NONE" using the "SELECT EASEL" item in the main menu .
   
4. At the main screen jog the enlarger to 3 inches below it's maximum height, (in Autofocus mode).
   
5. Remove the easel from the baseboard.
   
6. Place a large piece of white paper on the baseboard and mark where the 10mm alignment marks are projected onto the paper. Do this carefully, using very fine lines.
   
7. Now select "SETUP EASEL" from the Calibration menu .
   
8. You will be presented with a list of Easel "NAMES" to choose from. Select 'A' if it is the first easel. Write the letter 'A' on your easel for future reference.
   
9. Place the easel on the baseboard.
   
10. Place the paper with the marks on the easel.
    
11. Now use , to jog the enlarger up or down until the 10mm marks exactly line up with marks you made on the white paper.
    
12. Press when the marks are perfectly aligned.

The Easel Setup procedure is now complete.

->3: SETUP CARRIER

Each carrier must be setup for proper autofocus operation. The one exception is the 4 X 5 glass carrier, we recommend you do not change the setup for this carrier and keep it as the "zero offset" carrier that is always used for lens setups. Each carrier may have a slightly different thickness from it's bottom surface to the emulsion surface, even a difference of a thousandth of an inch can make a difference in grain sharpness. To correct for these variations, setup the carriers using the following procedure:

1. Select the shortest lens available (the 50mm lens you've already setup).
   
2. Install and select the carrier you wish to setup.
   
3. Select easel "NONE" using the "SELECT" item in the main menu , remove any easel.
   
4. At the main screen jog the enlarger to 3 inches below it's maximum height, (in Autofocus mode).
   
5. Select "SETUP CARRIER" from the Calibration menu .
   
6. Select the appropriate carrier from the displayed carrier menu .
   
7. Tap or and use a grain focuser to achieve a grain sharp image.
   
8. Press when grain sharp.
   

The Carrier Setup procedure is now complete.

->4 : SETUP DROP TABLE

The drop table setup is not applicable to bench mount and wall mounted Sentinels.

SENTINEL MAINTENANCE MENU

ACCESS THROUGH ITEM 7 IN THE SENTINEL MAIN MENU.

1: ERASE ONE JOB

2: ERASE ALL JOBS

3: MASTER RESET

->1: ERASE ONE JOB

To erase specific print job memories use this selection. The display will show the entire list of jobs currently stored in memory. Use or to scroll up and down the list or use the numeric pad to enter a specific job number. Press if you wish to erase the job. You will be prompted with an "ARE YOU SURE" message, press again to permanently erase the job. When a job is erased, both the sizing information and filtration information for that job is erased. After erasing one job you may continue to erase more jobs. When finished, press to get back to the main screen.

->2 : ERASE ALL JOBS

To permanently erase all jobs use this menu item. You will be asked "ARE YOU SURE" and if so, press to clear all memories. Both the sizing and filtration information is erased.

->3 : MASTER RESET

To clear the Sentinel Autofocus system memory and reset it to its factory settings use this menu selection. All of the Lens, Carrier, Easel, and Limits, will be erased. The Sizing/ Autofocus portion of the job memories will be erased. Information pertaining to the Starlite Colorhead will not be lost; this includes Master Color Balance, Emulsion offsets, and colorhead settings stored in Job Memories. The enlarger will go through the reference procedure after the memory is cleared.

SENTINEL DIAGNOSTICS MENU

ACCESS THROUGH ITEM 8 IN THE SENTINEL MAIN MENU.

1: SELF TEST

2: CYCLE MODE

3: TEST MOTORS

4: TEST ENCODERS

5: TEST LIMIT SWITCHES

6: TEST REFERENCE PULSES

7: REFERENCE ENLARGER

8: STACK DEPTH

9: DISABLE CL COLORHEAD

10: SHOW DATA

11: CHECK REFERENCE

12: ENCODER COUNTS

->1: SELF TEST

This diagnostic is an automatic test of the autofocus measuring encoders system. Select this operation and the enlarger will perform a referencing procedure. Once completed the display will show two error counts, one for each encoder, the errors should always be 0. If they are not 0 there may be a problem with the measuring encoders.

->2: CYCLE MODE

When this mode is selected the Sentinel continuously loads and exposes the 10 highest numbered print job memories. This is used for factory burn-in procedures. Press and hold to exit this mode.

->3: TEST MOTORS

This diagnostic is used to manually test the basic operations of the Sentinel drive system. The drive motors and their encoders can be checked using this procedure. Use or to control the negative stage motor and lens stage motors independently. The display should read "LENS: STOP NEG: STOP" when nothing is being moved. and in the numeric pad control the Lens Motor. (The other , move the Negative Stage.) Upon pressing near the numeric pad, the lens stage should move up the column, and the display should read "LENS: UP NEG: STOP." In short, each motor should respond by moving in the direction of or being pressed, up or down, and the display should give a solid readout of the direction. If the direction does not correspond with the movement there may be a problem with the drive motors. It is important to note that the limits are disabled in this test, so care must be taken not to overrun the top and bottom limit switches, nor to separate the bellows excessively. Damage to the enlarger may result.

->4: TEST ENCODERS

This diagnostic is used to test the autofocus measuring encoders. The numbers should roughly correspond to the lens and negative stage heights from the baseboard in thousandths of inches. To use this diagnostic, the Encoder measurement cables need to be accessed. This procedure can potentially damage the encoder units if not done carefully. At the main screen, go into Manual-focus and jog the enlarger to the bottom and then separate the bellows by about 10 inches. Then go into the "TEST ENCODERS" diagnostic. The display will have two number readouts on it, one for Lens and one for Negative. Gently pull straight up on the measuring cable that is lying along the front of the column from the negative stage up to the top of column. Do not pull this cable more than 12 inches! As the cable is pulled straight up, both numbers on the display should decrease in value. As the cable is released, the numbers should count back up to their original values, within a couple of counts. NOTE: When releasing the cable, NEVER let it snap into position. Next partially remove the bellows at the bottom. You will see the bellows measuring cable inside at the front left and rear right corners. Very carefully pull the cable straight down (or as close to straight down as possible) at the front left section of the cable, do not pull down more than 8 inches. When doing this, note the Lens Encoder number: it should decrease as the cable is pulled, and return to its original value when the cable is released. If either number returns to a value grossly different from where it started, or does not change at all, there is a problem with the autofocus measurement encoders system.

->5 : TEST LIMIT SWITCHES

This diagnostic is used to test the drive motor limit switches that are located behind the negative and lens stage runner plates and behind the bellows on the lens stage. Each of the three switches can be pressed manually with the aid a long screwdriver and their status will be display as "ON" or "OFF" on the keypad display. If any of the limits read "ON" (except the "Extra" readout, which always reads ON) when the enlarger is clearly not at it's limited positions there may be a problem with the limit switch detection system.

->6: TEST REFERENCE PULSES

The autofocus measuring encoders have reference pulse outputs that must work properly when the enlarger performs its referencing procedure. This diagnostic allows you to test the two pulses. This procedure can potentially damage the encoder units if not done carefully. At the main screen, go into Manual-focus and jog the enlarger to the bottom and then separate the bellows by 10" (Ten inches). Then go into the "TEST REFERENCE PULSES" diagnostic. Gently pull up on the measuring cable that is lying along the front of the column from the negative stage up to the top of column. Do not pull this cable more than 12 inches! For every 4 inches the cable is pulled the keypad should beep and a number should be displayed next to "COLUMN ENCODER". Next partially remove the bellows at the bottom. You will see the bellows measuring cable inside at the front left and rear right corners. Very carefully pull the cable down at the front left section of the cable, do not pull down more than 8 inches. For every 4 inches the keypad should beep and a number should appear next to "BELLOWS ENCODER".

->7: REFERENCE ENLARGER

This diagnostic references the enlarger in the same manner as when the enlarger is first switched on.

->8 : STACK DEPTH

This diagnostic is used only for factory testing.

->9 : DISABLE CL COLORHEAD

This diagnostic is used only for factory testing. It will disable all Colorhead functions.

->10: SHOW DATA

This diagnostic is used for viewing the internal values for the lens, carrier and easel currently in use. The focal length and offsets are displayed, but their values are based on internal calculations and may not be equal to what is printed on the lens.

->11: CHECK REFERENCE

This diagnostic is an automatic test of the autofocus measuring encoders system. Select this operation and the enlarger will perform a referencing procedure. Once completed the display will show two error counts, one for each encoder: the errors should always be 0. If they are not 0 there may be a problem with the measuring encoders.

->12: ENCODER COUNTS

In this diagnostic the individual measuring encoder values are displayed, this is similar to the test encoders diagnostic.