Polaroid Spectra/Image One Board Operating instructions

Repair Manual
Americas Business Center
Technical Services
201 Burlington Road
Bedford MA 01730
TEL: [phone]
FAX: [phone]
Spectra/Image One Board
September 1996

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Table of Contents
Page
Section 1 - General Description........................................................................ 5
ScopeofThisAddendum ............................................................................... 5
SpectraPro/ImagePro/MinoltaProOperatingDifferences ............................. 5
SpectraPro/ImagePro/MinoltaProPerformanceDifferences......................... 7
SpectraPro/ImagePro/MinoltaProExternalPhysicalDifferences .................. 8
Section 2 - Disassembly and Reassembly ...................................................... 9
SpecialTools.................................................................................................. 9
Cautionsand Reminders ................................................................................ 10
RemovingMid-Cover...................................................................................... 11
Disassembling Mid-Cover .............................................................................. 12
RemovingRanging Board............................................................................... 14
ReplacingRangingBoard............................................................................... 17
Removing LCD Board from Ranging Board ................................................... 18
Reconnecting LCD Board to Ranging Board................................................... 19
RemovingOne Board Strobe/ExposureModuleAssembly.............................. 20
Section 3 - Testing and Adjustments ............................................................... 23
FunctionalTest................................................................................................ 23
Star Tester Model 12650-3 Description........................................................... 33
StarTesterSetup andPre-TestChecks........................................................... 36
OrderofSpectra Pro/Image Pro/Minolta Pro SystemTests ............................. 39
AmbientExposure Test ................................................................................... 41
StrobeExposure (Graywall)Test ..................................................................... 43
ZLS(Zonal LumenSeconds) GraywallTest ..................................................... 45
Hybrid(ZLS/BladeSpeed) Test ...................................................................... 47
Blade Speed Test ........................................................................................... 49
SpectraPro/ImagePro/MinoltaProStarTesterSpecifications........................ 50
AmbientExposureCalibration Slide Adjustment ............................................. 51
IRStrobe Exposure Calibration SlideAdjustment............................................ 53
HybridAdjustment (Opening BladeSpring)..................................................... 55
BladeSpeedAdjustment(OpeningBlade Spring............................................ 56
Solenoid1Adjustment for Quintic Position...................................................... 57

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Section 4 Spectra Pro/Image Pro/Minolta Pro Troubleshooting .................... 59
BasicRequirementsand Guidelines ............................................................... 59
AbbreviationsUsedinThisSection ................................................................ 62
OperatingProblemsand TypicalCauses ........................................................ 63
Wire Connections and TestPoints .................................................................. 73
Schematic Diagrams...................................................................................... 74
List of Illustrations
Figure Page
1-1 Spectra Pro/Image Pro/Minolta Pro ElectronicControlPanel..................... 6
1-2 SpectraPro/Image Pro/MinoltaProExternalPhysical Differences............. 8
2-1 ProperRemovalof a TypicalWireConnector ............................................ 10
2-2 Removing Hinge Pins and Mid-Cover........................................................ 11
2-3 RemovingEyeCup and ButtonsfromMid-Cover ....................................... 12
2-4 Removing LCD Window from Mid-Cover ................................................... 13
2-5 Ranging Board and Connectors for J1, J2 and J3...................................... 14
2-6 Releasing Connectors from RangingBoard............................................... 15
2-7 Releasing Ranging Board Wire Connections............................................. 16
2-8 ReconnectingJ1, J2 and J3 to Ranging Board .......................................... 17
2-9 Removing LCD Board............................................................................... 18
2-10 Replacing LCD Board............................................................................... 19
2-11 DisconnectingOne Board Strobe/ExposureModule.................................. 20
2-12 RemovingJ8 from One Board Strobe/ExposureModule............................ 21
2-13 RemovingPhotodiode Retainer................................................................. 22
3-1 SetupforSpectraPro/Image Pro/Minolta Pro FunctionalTest .................... 24
3-2 Closing Door Latch ................................................................................... 25
3-3 LCD Control Panel at Completion of Dark Slide ........................................ 26
3-4 CoveringTransducertoStimulateInfinityExposure .................................... 28
3-5 QuinticLensMoves to Short-DistanceSetting ........................................... 29
3-6 QuinticLensMovestoInfinitySetting ......................................................... 31
3-7 StarTester 12650-3ControlsandIndicators(See text for description) ....... 35
3-8 Locating Star Tester inRelationto Graywall Target..................................... 36
3-9 Tripping Spectra System Door Switch to DOWN Position.......................... 37
3-10 PositioningCameraonHornagainst Star Tester ....................................... 38
3-11 Displayfor Flash, Autofocus, AudioandExposureAdjust OFF .................. 42

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3-12 DisplayforFlash, Autofocus ON , AudioandExposureAdjustOFF ........... 43
3-13 Displayfor Flash ON , AllOtherFunctions OFF.......................................... 45
3-14 Displayfor Flash andAutofocusON, All OtherFunctionsOFF ................... 47
3-15 DisplayforFlashandAutofocus and Audio OFF........................................ 49
3-16 Removing Top Cover from Camera (See Section 2 for Details) ................. 51
3-17 Adjusting Ambient (Visible Light) Calibration Slide .................................... 52
3-18 AdjustingIRStrobe Exposure Calibration Slide ......................................... 53
3-19 HybridAdjustment (OpeningBladeSpring TensionAdjustment)................. 55
3-20 AdjustingSolenoid 1 to Change Quintic Speed ......................................... 58
4-1 One Board Strobe/Exposure Module Connections onRangingBoard........ 60
4-2 Elastomeric “Zebra” Connector.................................................................. 60
4-3 InitialTest Procedure for RangingBoard and LCD Board .......................... 61
4-4 Wire Connections,TestPoints:Strobe/Exposure Module
andRangingBoard ................................................................................... 73
4-5 OneBoardSpectraPro/ImagePro/Minolta Pro System Schematic ........... 75
4-6 One Board Strobe/Exposure ModuleSchematic........................................ 76
4-7 RangingBoard Schematic ........................................................................ 77
4-8 FeaturesModule and Display Module Schematic ...................................... 78

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Section 1 - General Description
Scope of This Addendum
This Service Manual addendum describes only thoseOne BoardSpectra Pro/Image
Pro/Minolta Pro mechanical parts, electronic circuits, operating modes and service
procedures that are different from those of the Spectra camera. Information common to
One Board Spectra Pro/Image Pro/Minolta Pro cameras and Spectra cameras is not
included in this addendum. Refer to Spectra Service Manual for this common
information.
To use this addendum effectively, you should also be familiar with the design, operation,
disassembly and calibration information presented in the Spectra Manual.
Thisaddendumapplies only to Spectra Pro/Image Pro/Minolta Pro cameras withtheOne
Board Strobe/ExposureModuleAssembly (Part No. 1B0632A) installed. (These cameras
canbeidentifiedbytheletterGasthe tenth characterintheir serial numbers.) For
servicingSpectra Pro/Image Pro/Minolta Pro cameraswithoutthe One Board assembly,
seeSpectraPro/ImageProCamera Service Manual Addendum of January, 1990.
The name Spectra Pro as used in this addendum refers to the Spectra Pro, Image Pro
andMinolta Pro cameras unless otherwisenoted.
Spectra Pro/Image Pro/Minolta Pro Operating Differences
The major differences between Spectra Pro/Image Pro/Minolta Pro cameras and
Spectra cameras relate to the operating modes available to the user, how they are
selected and how their status is displayed.

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TheSpectra Pro/Image Pro/Minolta Prohasthe following operatingfeatures:
•Automatic (sonar) focusing or manual focus distance setting
•Manualshutteropeningandclosing (bulb mode)
•Programmabletimeexposures (1-12- seconds)
•Automaticsequentialexposures at programmable intervals
•Up to five exposures on a single frame
•Exposurecompensation for severelybacklitsubjects
•Exposurelighten/darken adjustment
•Tilting accessory strobe
•Sound on or off (tone, chime and beep signals)
•Digital(LCD)display of exposures remaining, subject distance, time exposure
duration, intervalbetween multiple time exposures andelapsedtime in “bulb” mode
Theseoperatingmodesareselected, programmed and displayed by the buttons and LCD
displays on the control panel (Figure 1-1).
Figure 1-1. Spectra Pro/Image Pro/Minolta Pro electronic control panel

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Pressing MODE repeatedly displays onefeaturesymbol after another; up anddown
arrows(_and_)turn the feature on or off and set digitaldisplays;Aresetsthecamera to
fullyautomatic operation. When a feature isON(active), a horizontal bar appearsbelow
the corresponding symbol on the LCD panel.
Note: For more information on these features, see Spectra Pro/Image Pro/Minolta Pro
OperatingInstructions.
Spectra Pro/Image Pro/Minolta Pro Performance Differences
Several features to improve exposure accuracy and picture sharpness have been incor-
porated in the Spectra Pro/Image Pro/Minolta Pro design. These include the following:
• Improved lens
Spectra Pro/Image Pro/Minolta Pro cameras have color corrected, coated, f/10,
125mm triplet glass lenses.
•Intentional ambient overexposure to brighten scene
Forlightlevels greater than 624 cd/ft2, a limited exposure kickupoccurstoproduce
a bright picture (truer whites, better facial exposure) without sacrificing detail.
•Double measurement of ambient brightness
Camera electronics remeasure the scene brightness when the second stage of the
shutter button is closed. This ensures that the latest data is used in the exposure
calculation,preventing errors caused by previewing one scenethen shooting another
without releasing the S1 button.
• Intermediate fill flash mode
Thisadditionalstrobe exposure program mode allowsmixinga50%flash contribution
with a 50% ambient contribution for light levels between 8 and 24 cd/ft2. This
brightens the backgrounds of low-light pictures and increases the shadow fill at
higherlevels.
•Bias focus
When available depth of field permits, the Spectra Pro intentionally focuses one or
twozones behindthesubject, improving overallscenesharpness.

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Spectra Pro/Image Pro/Minolta Pro External Physical Differences
Figure1-2 illustrates thephysicalexternal differences betweenSpectraPro/Image
Pro/Minolta Pro cameras and Spectra cameras:
•New top cover insert
•New S1/S10 button inlay
•New front decorative plate (with Spectra Pro/Image Pro/Minolta Pro name)
•New hand strap
Figure 1-2. Spectra Pro/Image Pro/Minolta Pro external physical differences
Top Cover Insert S1/S10
Button
Front Decorative Plate
Hand Strap

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Sectiion 2 - Disassembly and Reassembly
Note: This section presents only the One Board Spectra Pro/Image Pro/Minolta Pro
camera disassembly and reassembly procedures that are different from those of
the Spectra camera. See Spectra Service Manual for all disassembly and
reassembly procedures not covered here.
Special Tools
Special Tools for Disassembly
• Hinge Pin Removal/Insertion Tool
P/N 13384 (for grasping Mid-Cover Hings Pins; See Figure 2-1)
• Square Socket Tool Bit with Handle
P/N 11913 (for removing screws holding LCD Board to Ranging Board;
see Figure 209)
Warning: Do not use the torque-limiting screwdriver to remove these screws.
Special Tools for Reassembly
• Torque-Limiting Screwdriver
P/N CR13397, with special Square Bit, P/N CR 13398 (for installing screws holding
LCD Board to Ranging Board; See Figure 2-9)
• Solder AideTool (green/black stick) P/N 942268
• Long needle-nose pliers with coated jaws
P/N 13186 (for reassembly of wire connectors use them to position the wire
connector with the pin connector, then use the Solder Aide Tool to press into position)
Warning: Do not use these pliers for disassembly.

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Cautions and Reminders
Use proper grounding to protect delicate CMOS circuitry from static discharge damage.
Avoid shock from the photoflash capacitor by discharging it with Dump Probe P/N
13119 immediatelyafterremovingtheTopCover.
Handle flexes (Features Flex, Motor Gear Drive Flex) carefully to avoid crimping or
crarcking from sharp bends.
Remove wire connectors with fingers only. Do not use pliers or other tools. Carefully
grasp the wires near the connector betwen thumb and index finger and pull gently while
rocking the connector from side to side (Figure 2-1).
Figure 2-1. Proper removal of a typical wire connector

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Removing Mid-Cover
1. Remove the top cover as directed in Spectra Service Manual
2. With the special HingePinInsertion/RemovalTool P/N13384(Figure2-2), grasp the
hinge pins at the reduced diameter section and pull them toward the center line of the
camera to remove them.
3. Close the camera (if erected) and open the front door. Insert a soldering aide (green
stick) betwen the mid-cover and the side of the main frame, twisiting the greenstick
while holding the side of the mod-cover out. Then insert the greenstick on the
opposite side and pry outward.
4. Close the font door and lay the camera flat. Bend the sides out slightly, pivoting the
locating cutouts on the bottom cover. Then lift off the mod-cover.
Figure 2-2. Removing hinge pins and mid cover
Hinge Pin Removal/Insertion Tool (P/N 13384
Grasp
Pull

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Disassembling Mid-Cover
1. To remove the eye cup, use a greenstick to spring out the tabs on the eye wedge
retainer (Figure 2-3). Remove the clear plastic eye wedge. The eye cup can now be
removed from the eye wedge retainer.
2. To remove the five control panel buttons, insert the point of a greenstick in the center
ofthebutton,andpushthebuttonout.
Note: When replacing buttons, be sure the markings are oriented correctly.
If they are not, the button cannot be inserted in the panel.
Figure 2-3. Removing eye cup and buttons from mid-cover
Tab
Control Panel Button
Eyecup
Tab
Eye Wedge
Greenstick

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3. To remove the LCD window(Figure2-4),press it carefully from the outside,bowing
the window slightly to free the tab at the end. Lift it out of the mod-cover.
Note: When replacing the LCD window, insert the end nearest the viewfinder first.
Thenbow the window slightly as shown and snap the other end into place.
4. To replace the font decorative plate, pry up the end with an Exacto knife and peel it
off. Make sure the knife does not slip and scratch the cover.
Figure 2-4. Removing LCD window from mid-cover
LCD Window
Tab

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Removing Ranging Board
Note: Besure to note the position of all wires and wire connectorsbefore you remove
anyparts, thenreturnthem to theiroriginalpositions uponreassembly.
1. Removethetop, mid and bottom covers.
2. DisengagetheS10/S1assemblyfromthespringtab.
3. Disconnect the follwing wire connectors from the One Board Strobe/Exposure
Module Assembly; J7, J6, J4, J5. (See page 4-15 for locations.)
4. Lift the ranging board slightly to free it from the tabs at the bottom-rear of the main
frame and to gain access to connectors J9, J10 and J11 on the ranging board
(Figure 2-5).
Figure 2-5. Ranging board and connectors for J1, J2 and J3
One Board
Strobe/Exposure
Module
Ranging
Board
J1
J2
J3
J9
J10
J11

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5. ReleaseconnectorsJ1,J2and J3 from the ranging board by grasping the wires
betweenyour thumb and index fingerandrocking the connector from sidetoside
(Figure2-6).
Figure 2-6. Releasing connectors from ranging board
6. Release the white wire (J5) and the brown wire (J4) from the MiniSert self-locking
terminals on the ranging board (Figure 2-7).
7. Release the paired black/red transducer wires from connectors J1 and J20 on the
ranging board (Figure 2-7). Straighten out the bare ends of the wires bent back over
terminals J19 and J20. Then either: (a) pull the wires out of the terminals, or (b)
unsolderthemandpullthemout.

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8. Removetheranging board (with the LCDboardattached).
Figure 2-7. Releasing ranging board wire connections
White Wire
to J5 Brown Wire
to J4
Ranging
Board
Black Wire
to J19
Black/Red Wire
to J20

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Replacing Ranging Board
1. Reconnect the following wires to the ranging board (Figure 2-7) on previous page):
•White wire to self-locking terminal J5
•Brownwire to self-locking terminal J4
•Black trnsducer lead to terminal J19 (GND)
•Black/red lead to terminal J20
2. With needle-nose pliers, alighn the wire connector J1 (from the One Board
Strobe/Exposure Module Assembly) with the mating pin connector on the ranging
board (Figure 2-8), then press the wire connector into position with solder aide
tool 941168.
3. Using the same technique described in step 2, reconnect wire connectors J2 and J3
(from the One Board Strobe/Exposure Module Assembly) with their mating pin
connectors on the ranging board.
4. Place the ranging board in its normal position, with the projecting tabs on the main
frame in the notches at the bottom of the ranging board.
Figure 2-8. Reconnecting J1, J2 and J3 to ranging board
Solder Aide
Tool
Needle-Nose
Pliers

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Removing LCD Board from Ranging Board
1. Hold the camera vertically, with the front down.
2. Using Square Socket Tool Bit with Handle, P/N 11913, carefully remove the two
machine screws (Ain Figure 2-9) securing the LCD board to the ranging board.
Hold the bracket (Din Figure 2-9) temporarily in place with your finger.
Warning: Do not use Torque Limiting Screwdriver, P/N CR 13397, to
remove the screws.
3. Carefully lift off the LCD board. Be careful not to lose the following parts, which are
released when the LCD board is removed:
• Clear plastic spacer block (Cin Figure 2-9)
• Gold-colored elastomeric zebra connector (B in Figure 2-9)
• Metal retainer (Din Figure 2-9)
Figure 2-9. Removing LCD board
Ranging Board
LCD Board
Warning: Remove only with Square
Socket Toll Bitwith Handle (P/N 11913).
Do not use Torque Limiting Screwdriver.
D
A
CB

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Reconnecting LCD Board to Ranging Board
1. Using your finger, hold the metal retainer (Din Figure 2-10) in place behind the
rangingboard.
2. Place the zebra connector (B in Figure 2-10) in the slot in the plastic spacer block
(C), concave side down.
3. Align the holes in spacer block (C) with the holes in the ranging board. Orient the
block as show, with the end notches facing down and the projecting shoulder in the
positionshown.
4. Using Torque Limiting Screwdriver, P/N CR 13397, (factory-set for 8 oz-in.) with
Square Bit, P/N CR 13398, install the two mounting screws. Alternatively tighten
each one a small amount until you reach the se torque (screwdriver clutch slips).
Figure 2-10. Replacing LCD board
Ranging Board
D
CB
A
Warning: Install only with
Torque Limiting screwdriver
(P/N CR 13397) and Square Bit
(P/N CR 13398.
LCD Board
To display distance in metric units,
cut jumper w1.
Concave
Side

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Removing One Board Strobe/Exposure Module Assembly
1. Remove the top cover, mid cover and bottom covers.
2. Disengage the S10/S1 assembly from the spring tab.
3. Push the S10/S1 assembly tab (Figure 2-11) to free it from the One Board
Strobe/ExposureModuleAssembly.
Figure 2-11. Disconnecting one board strobe exposure module
Red Wire
t0J14
Push Tab
to Free
S1/S10
Assembly
J26
J9, J10, J11
(Lift One
Board/Strobe
Exposure
Module
to access)
Ranging
Board
J7
J6
J5
J4
Green Wire
to J17
White Wire
to Trigger
Coil (soldered)
Orange Wiew
to J16
Black Wire
to J15