Polaroid Spectra/Image One Board Repair Manual
Repair Manual
Americas Business Center
Technical Services
201 Burlington Road
Bedford MA 01730
TEL: 1.781.386.5309
FAX: 1.781.386.5988
Spectra/Image One Board
September 1996
Table of Contents
Page
Section 1 - General Description........................................................................ 5
Scope of This Addendum ............................................................................... 5
Spectra Pro/Image Pro/Minolta Pro Operating Differences ............................. 5
Spectra Pro/Image Pro/Minolta Pro Performance Differences......................... 7
Spectra Pro/Image Pro/Minolta Pro External Physical Differences .................. 8
Section 2 - Disassembly and Reassembly ...................................................... 9
Special T ools.................................................................................................. 9
Cautions and Reminders ................................................................................ 10
Removing Mid-Cover...................................................................................... 11
Disassembling Mid-Cover .............................................................................. 12
Removing Ranging Board............................................................................... 14
Replacing Ranging Board............................................................................... 17
Removing LCD Board from Ranging Board ................................................... 18
Reconnecting LCD Board to Ranging Board................................................... 19
Removing One Board Strobe/Exposure Module Assembly.............................. 20
Section 3 - Testing and Adjustments ............................................................... 23
Functional T est................................................................................................ 23
Star Tester Model 12650-3 Description........................................................... 33
Star T ester Setup and Pre-Test Checks........................................................... 36
Order of Spectra Pro/Image Pro/Minolta Pro System T ests ............................. 39
Ambient Exposure T est................................................................................... 41
Strobe Exposure (Graywall) T est ..................................................................... 43
ZLS (Zonal Lumen Seconds) Graywall T est ..................................................... 45
Hybrid (ZLS/Blade Speed) T est ...................................................................... 47
Blade Speed Test........................................................................................... 49
Spectra Pro/Image Pro/Minolta Pro Star T ester Specifications........................ 50
Ambient Exposure Calibration Slide Adjustment ............................................. 51
IR Strobe Exposure Calibration Slide Adjustment............................................ 53
Hybrid Adjustment (Opening Blade Spring)..................................................... 55
Blade Speed Adjustment (Opening Blade Spring............................................ 56
Solenoid 1 Adjustment for Quintic Position...................................................... 57
2
Section 4 Spectra Pro/Image Pro/Minolta Pro Troubleshooting.................... 59
Basic Requirements and Guidelines............................................................... 59
Abbreviations Used in This Section ................................................................ 62
Operating Problems and T ypical Causes ........................................................ 63
Wire Connections and T est Points .................................................................. 73
Schematic Diagrams...................................................................................... 74
List of Illustrations
Figure Page
1-1 Spectra Pro/Image Pro/Minolta Pro Electronic Control Panel..................... 6
1-2 Spectra Pro/Image Pro/Minolta Pro External Physical Differences............. 8
2-1 Proper Removal of a Typical Wire Connector ............................................ 10
2-2 Removing Hinge Pins and Mid-Cover........................................................ 11
2-3 Removing Eye Cup and Buttons from Mid-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 Ranging Board............................................... 15
2-7 Releasing Ranging Board Wire Connections............................................. 16
2-8 Reconnecting J1, J2 and J3 to Ranging Board .......................................... 17
2-9 Removing LCD Board............................................................................... 18
2-10 Replacing LCD Board............................................................................... 19
2-1 1 Disconnecting One Board Strobe/Exposure Module.................................. 20
2-12 Removing J8 from One Board Strobe/Exposure Module ............................ 21
2-13 Removing Photodiode Retainer................................................................. 22
3-1 Setup for Spectra Pro/Image Pro/Minolta Pro Functional T est.................... 24
3-2 Closing Door Latch ................................................................................... 25
3-3 LCD Control Panel at Completion of Dark Slide ........................................ 26
3-4 Covering Transducer to Stimulate Infinity Exposure.................................... 28
3-5 Quintic Lens Moves to Short-Distance Setting ........................................... 29
3-6 Quintic Lens Moves to Infinity Setting ......................................................... 31
3-7 Star T ester 12650-3 Controls and Indicators (See text for description) ....... 35
3-8 Locating Star T ester in Relation to Graywall Target..................................... 36
3-9 Tripping Spectra System Door Switch to DOWN Position.......................... 37
3-10 Positioning Camera on Horn against Star T ester ....................................... 38
3-1 1 Display for Flash, Autofocus, Audio and Exposure Adjust OFF .................. 42
3
3-12 Display for Flash, Autofocus ON , Audio and Exposure Adjust OFF ........... 43
3-13 Display for Flash ON , All Other Functions OFF.......................................... 45
3-14 Display for Flash and Autofocus ON, All Other Functions OFF ................... 47
3-15 Display for Flash and Autofocus 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 Adjusting IR Strobe Exposure Calibration Slide ......................................... 53
3-19 Hybrid Adjustment (Opening Blade Spring T ension Adjustment)................. 55
3-20 Adjusting Solenoid 1 to Change Quintic Speed ......................................... 58
4-1 One Board Strobe/Exposure Module Connections on Ranging Board........ 60
4-2 Elastomeric “Zebra” Connector.................................................................. 60
4-3 Initial Test Procedure for Ranging Board and LCD Board .......................... 61
4-4 Wire Connections, T est Points: Strobe/Exposure Module
and Ranging Board ................................................................................... 73
4-5 One Board Spectra Pro/Image Pro/Minolta Pro System Schematic ........... 75
4-6 One Board Strobe/Exposure Module Schematic........................................ 76
4-7 Ranging Board Schematic ........................................................................ 77
4-8 Features Module and Display Module Schematic ...................................... 78
4
Section 1 - General Description
Scope of This Addendum
This Service Manual addendum describes only those One Board Spectra 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.
This addendum applies only to Spectra Pro/Image Pro/Minolta Pro cameras with the One
Board Strobe/Exposure Module Assembly (Part No. 1B0632A) installed. (These cameras
can be identified by the letter G as the tenth character in their serial numbers.) For
servicing Spectra Pro/Image Pro/Minolta Pro cameras without the One Board assembly ,
see Spectra Pro/Image Pro Camera Service Manual Addendum of January , 1990.
The name Spectra Pro as used in this addendum refers to the Spectra Pro, Image Pro
and Minolta Pro cameras unless otherwise noted.
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.
5
The Spectra Pro/Image Pro/Minolta Pro has the following operating features:
• Automatic (sonar) focusing or manual focus distance setting
• Manual shutter opening and closing (bulb mode)
• Programmable time exposures (1-12- seconds)
• Automatic sequential exposures at programmable intervals
• Up to five exposures on a single frame
• Exposure compensation for severely backlit subjects
• Exposure lighten/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, interval between multiple time exposures and elapsed time in “bulb” mode
These operating modes are selected, 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
6
Pressing MODE repeatedly displays one feature symbol after another; up and down
arrows (_and_) turn the feature on or off and set digital displays; A resets the camera to
fully automatic operation. When a feature is ON (active), a horizontal bar appears below
the corresponding symbol on the LCD panel.
Note: For more information on these features, see Spectra Pro/Image Pro/Minolta Pro
Operating Instructions.
Spectra Pro/Image Pro/Minolta Pro Performance Differences
Several features to improve exposure accuracy and picture sharpness have been incorporated 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
For light levels greater than 624 cd/ft2, a limited exposure kickup occurs to produce
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 scene then shooting another
without releasing the S1 button.
• Intermediate fill flash mode
This additional strobe exposure program mode allows mixing a 50% 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
higher levels.
• Bias focus
When available depth of field permits, the Spectra Pro intentionally focuses one or
two zones behind the subject, improving overall scene sharpness.
7
Spectra Pro/Image Pro/Minolta Pro External Physical Differences
Figure 1-2 illustrates the physical external differences between Spectra Pro/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
T op Cover Insert
Front Decorative Plate
S1/S10
Button
Hand Strap
Figure 1-2. Spectra Pro/Image Pro/Minolta Pro external physical differences
8
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 T ools for Disassembly
• Hinge Pin Removal/Insertion Tool
P/N 13384 (for grasping Mid-Cover Hings Pins; See Figure 2-1)
• Square Socket T ool Bit with Handle
P/N 1 1913 (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 T ools 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.
9
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
131 19 immediately after removing the Top Cover.
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
10
Removing Mid-Cover
1. Remove the top cover as directed in Spectra Service Manual
2. With the special Hinge Pin Insertion/Removal Tool P/N 13384 (Figure 2-2), 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.
Hinge Pin Removal/Insertion Tool (P/N 13384
Figure 2-2. Removing hinge pins and mid cover
Pull
Grasp
11
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
of the button, and push the button out.
Note: When replacing buttons, be sure the markings are oriented correctly .
If they are not, the button cannot be inserted in the panel.
Eyecup
Control Panel Button
Tab
Eye Wedge
Tab
Greenstick
Figure 2-3. Removing eye cup and buttons from mid-cover
12
3. T o remove the LCD window (Figure 2-4), 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.
Then bow 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
Tab
LCD Window
13
Removing Ranging Board
Note: Be sure to note the position of all wires and wire connectors before you remove
any parts, then return them to their original positions upon reassembly .
1. Remove the top, mid and bottom covers.
2. Disengage the S10/S1 assembly from the spring tab.
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).
J1
J2
One Board
Strobe/Exposure
Module
J3
Figure 2-5. Ranging board and connectors for J1, J2 and J3
Ranging
Board
J9
J10
J11
14
5. Release connectors J1, J2 and J3 from the ranging board by grasping the wires
between your thumb and index finger and rocking the connector from side to side
(Figure 2-6).
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)
unsolder them and pull them out.
15
8. Remove the ranging board (with the LCD board attached).
White Wire
to J5
Brown Wire
to J4
Ranging
Board
Black/Red Wire
to J20
Black Wire
to J19
Figure 2-7. Releasing ranging board wire connections
16
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
• Brown wire 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.
Solder Aide
Tool
Needle-Nose
Pliers
Figure 2-8. Reconnecting J1, J2 and J3 to ranging board
17
Removing LCD Board from Ranging Board
1. Hold the camera vertically, with the front down.
2. Using Square Socket T ool Bit with Handle, P/N 11913, carefully remove the two
machine screws (A in Figure 2-9) securing the LCD board to the ranging board.
Hold the bracket (D in 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 (C in Figure 2-9)
• Gold-colored elastomeric zebra connector (B in Figure 2-9)
• Metal retainer (D in Figure 2-9)
Ranging Board
D
C
B
A
Warning: Remove only with Square
Socket Toll Bitwith Handle (P/N 11913).
Do not use Torque Limiting Screwdriver.
LCD Board
Figure 2-9. Removing LCD board
18
Reconnecting LCD Board to Ranging Board
1. Using your finger, hold the metal retainer ( D in Figure 2-10) in place behind the
ranging board.
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
position shown.
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).
D
Ranging Board
To display distance in metric units,
cut jumper w1.
C
B
Concave
Side
A
Warning: Install only with
Torque Limiting screwdriver
(P/N CR 13397) and Square Bit
(P/N CR 13398.
LCD Board
Figure 2-10. Replacing LCD board
19
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/ExposureModule Assembly .
Push Tab
to Free
S1/S10
Assembly
J4
J5
J6
J7
Red Wire
t0 J14
J26
Green Wire
to J17
White Wire
to Trigger
Coil (soldered)
Figure 2-11. Disconnecting one board strobe exposure module
J9, J10, J11
(Lift One
Board/Strobe
Exposure
Module
to access)
Ranging
Board
Black Wire
to J15
Orange Wiew
to J16
20
4. Disconnect the following wires from the One Board Strobe/Exposure Module
Assembly (Figure 2-11):
• Black wire from J26
• Red wire from J14
• Black wire from J15
• Orange wire from J16
• Green wire from J17
5. Unsolder the white wire from the trigger coil (Figure 2-11)
6. Disconnect wire connectors J7, J6, J4, and J5 from the One Board Strobe/Exposure
Module Assembly .
7. Lift the One Board Strobe/Exposure Module Assembly to access wiring connectors
J9, J10, and J11 on the ranging board.
8. Release each of the three connectors (J1, J2, J3) from the ranging board
(Figure 2-11) by grasping each connector between your thumb and index finger
and lifting one side of the connector at a time.
9. Release wire connector J8 (from the Wire/Motor Gear Drive Flex Assembly) from the
One Board Strobe/Exposure Module Assembly (Figure 2-12).
J8
Motor/Gear Drive
Flex assembly
Figure 2-12. Removing J8 from one board strobe/exposure module
21
10.Use tweezes to remove the photodiode ratainer from the shutter base block
(Figure 2-13).
1 1.Lift out the One Board Strobe/Exposure Module Assembly.
Note: To install a One Board Strobe/Exposure Module Assembly, reverse this
procedure.
Shutter Baseblock
Photodiode Retainer
Figure 2-13. Removing photodiode retainer
22
Section 3 - Testing and Adjustments
Spectra Pro/Image Pro/Minolta Pro System Functional T est
Purpose
The purpose of the functional test is to determine if the camera is operating properly
during various phases of simulated operation. In this test the camera is cycled through
dark slide, strobe exposures, non-strobe exposures, and end-of-pack. The intent is to
isolate problems for troubleshooting. If the camera does not operate as described
below , consult the troubleshooting chart most closely allied with the problem.
Equipment Required
• Film Pack Simulator #12467
• Film Pack Simulator Adapter #13130
• Power Supply - Power Mate #12531 or Lambda #12429
23
Test Setup
1. Insert the Film Pack Simulator Adapter #13130 onto the Film Pack Simulator #12467
(Figure 3-1).
2. Plug the Film Pack Simulator with adapter into the power supply (either Power Mate
#12531 or Lambda #12429).
3. Plug the power supply into a 110 VAC power source.
4. Turn the power supply ON.
5. Adjust the power supply output voltage to 6 VDC.
Figure 3-1. Setup for spectra pro/image pro/minolta pro functional test
Film Pack Simulator
#12467
Film Pack Simulator
Adapter #13130
24
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