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Repair Manual
Spectra/Image One Board
September 1996
Americas Business Center
Technical Services
201 Burlington Road
Bedford MA 01730
TEL: 1.781.386.5309
FAX: 1.781.386.5988

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Summary of Contents for Polaroid Spectra/Image One Board

  • Page 1 Repair Manual Spectra/Image One Board September 1996 Americas Business Center Technical Services 201 Burlington Road Bedford MA 01730 TEL: 1.781.386.5309 FAX: 1.781.386.5988...
  • Page 2: Table Of Contents

    Table of Contents Page Section 1 - General Description................ Scope of This Addendum ................Spectra Pro/Image Pro/Minolta Pro Operating Differences ......Spectra Pro/Image Pro/Minolta Pro Performance Differences......Spectra Pro/Image Pro/Minolta Pro External Physical Differences ....Section 2 - Disassembly and Reassembly ............Special Tools ....................
  • Page 3 Section 4 Spectra Pro/Image Pro/Minolta Pro Troubleshooting ....Basic Requirements and Guidelines ............... Abbreviations Used in This Section ..............Operating Problems and Typical Causes ............Wire Connections and Test Points ..............Schematic Diagrams ..................List of Illustrations Figure Page 1-1 Spectra Pro/Image Pro/Minolta Pro Electronic Control Panel ..... 1-2 Spectra Pro/Image Pro/Minolta Pro External Physical Differences .....
  • Page 4 3-12 Display for Flash, Autofocus ON , Audio and Exposure Adjust OFF ... 3-13 Display for Flash ON , All Other Functions OFF.......... 3-14 Display for Flash and Autofocus ON, All Other Functions OFF ....3-15 Display for Flash and Autofocus and Audio OFF ........3-16 Removing Top Cover from Camera (See Section 2 for Details) ....
  • Page 5: Section 1 - General Description

    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.
  • Page 6: Spectra Pro/Image Pro/Minolta Pro Electronic Control Panel

    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 •...
  • Page 7: Spectra Pro/Image Pro/Minolta Pro Performance Differences

    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.
  • Page 8: Spectra Pro/Image Pro/Minolta Pro External Physical Differences

    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) •...
  • Page 9: Section 2 - Disassembly And Reassembly

    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.
  • Page 10: Cautions And Reminders

    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 immediately after removing the Top Cover. Handle flexes (Features Flex, Motor Gear Drive Flex) carefully to avoid crimping or crarcking from sharp bends.
  • Page 11: Removing Mid-Cover

    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.
  • Page 12: Disassembling Mid-Cover

    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.
  • Page 13: Removing Lcd Window From Mid-Cover

    3. To 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.
  • Page 14: Removing Ranging Board

    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.
  • Page 15: Releasing Connectors From Ranging Board

    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).
  • Page 16: Releasing Ranging Board Wire Connections

    8. Remove the ranging board (with the LCD board attached). Black/Red Wire to J20 Black Wire to J19 White Wire to J5 Ranging Brown Wire Board to J4 Figure 2-7. Releasing ranging board wire connections...
  • Page 17: Replacing Ranging Board

    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.
  • Page 18: Removing Lcd Board From Ranging Board

    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 (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.
  • Page 19: Reconnecting Lcd Board To Ranging Board

    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.
  • Page 20: Removing One Board Strobe/Exposure Module Assembly

    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/Exposure Module Assembly.
  • Page 21: Removing J8 From One Board Strobe/Exposure Module

    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.
  • Page 22: Removing Photodiode Retainer

    10.Use tweezes to remove the photodiode ratainer from the shutter base block (Figure 2-13). 11. 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...
  • Page 23: Section 3 - Testing And Adjustments

    Section 3 - Testing and Adjustments Spectra Pro/Image Pro/Minolta Pro System Functional Test 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.
  • Page 24: Setup For Spectra Pro/Image Pro/Minolta Pro Functional Test

    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.
  • Page 25: Closing Door Latch

    Test Procedure 1. Erect the camera and open the film door. 2. Install the film pack simulator with the adapter into the camera. The camera should not cycle. 3. Remove the film pack simulator from the camera. 4. Using the tip of a solder aide, close the camera door latch (Figure 3-2). Push in with soldering aide (greenstick) to close door latch.
  • Page 26: Lcd Control Panel At Completion Of Dark Slide

    5. Install the film pack simulator into the camera again. The camera should go through a dark slide cycle with the following events happening: • The strobe should not fire. • The camera shutter blades should remain closed. • The strobe charging light (red) should come on and then go off. •...
  • Page 27 7. Aim the camera at an object exactly four feet (1.2 meters) away and press the S1/S10 button down half way. The following should happen: • A green circle within a green square will be visible in the viewfinder. • A red figure “4”...
  • Page 28: Covering Transducer To Stimulate Infinity Exposure

    Cover transducer with hand or tape. Do not cover photocell Figure 3-4. Covering transducer to simulate infinity exposure 9. Now, aim the camera at an object within the range of 2 feet (.6 meter) to 15 feet (4.5 meters) and press the S1/S10 button all the way. The following should happen: •...
  • Page 29: Quintic Lens Moves To Short-Distance Setting

    11. Use the Mode button and either of the UP/DOWN buttons on the control panel to turn the strobe switch off. (The bar under the strobe symbol disappears.) Turn the front of the camera toward you. Cover the photocell with black photographic tape. Insert a soldering aide between the flapper door and the bottom of the shutter (Figure 3-5).
  • Page 30 13.Turn the autofocus feature off and set the distance to infinity as follows: • Press the MODE button until only the autofocus symbol (AF) is visible in the LCD display. • Press the up or down arrow button to remove the bar from beneath the autofocus symbol.
  • Page 31: Quintic Lens Moves To Infinity Setting

    15.Remove the soldering aide from the flapper door and remove the black photographic tape from the photocell. Press the green A button on the control panel to return the camera to its original settings. AF switch in OFF setting Quintic lens moves down part way Figure 3-6.
  • Page 32 17.Press the S1/S10 button all the way down. The following should happen: • The end of pack chimes will sound three times. • The strobe will fire. • Release the S1/S10 button. • The camera will cycle. • The end of pack chimes will sound three times. 18.Look into the viewfinder and press the S1/S10 button half way down.
  • Page 33: Star Tester Model 12650-3 Description

    Star Tester Model 12650-3 Description This Star Tester is an upgrade of the Model 12650-2 (for 600 Series and other cameras). The 12650-3 permits testing Spectra System Cameras for seven different exposure-and timing-related operating characteristics, as well as 600-Series and other cameras.
  • Page 34 Figure 3-7 CONTROL/INDICATOR FUNCTION Stops Error Meter Digital readout for Ambient, Hybrid, Strobe Expos. Tests. DC Current Meter Digital readout of energy req’d to charge Strobe capacitor. ZLS Meter Digital readout of strobe light output in Zonal Lumen seconds. Power Switch AC line voltage On/Off to Tester, Lights when Tester is powered.
  • Page 35: Star Tester 12650-3 Controls And Indicators (See Text For Description)

    Figure 3-7. Star tester 12650-3 controls and indicators (see text for descriptions)
  • Page 36: Star Tester Setup And Pre-Test Checks

    Star Tester Setup and Pre-Test Checks Star Tester Setup 1. Install Tester on level surface with clear area around Tester to allow sufficient air flow for cooling. 2. Locate the Tester on a bench or table so that when the Spectra on its Horn is placed on the top of the Tester, the Spectra lens will be exactly 4.5 feet (135 cm) from a graywall target.
  • Page 37: Tripping Spectra System Door Switch To Down Position

    Pre-Test Checks 1. Connect the Tester to 115 VAC, 50/60 Hz line. 2. Mount the camera on the Spectra Horn (P/N 13146) and connect the cable from Horn to the receptacle marked “Horn” (key #16 in Figure 3-7) on the right side of theTester. 3.
  • Page 38: Positioning Camera On Horn Against Star Tester

    Guide Tab Figure 3-10. Positioning camera on horn against star tester...
  • Page 39: Order Of Spectra Pro/Image Pro/Minolta Pro System Tests

    Order of Spectra Pro/Image Pro/Minolta Pro System Tests Tests on Spectra Pro/Image Pro cameras should be performed as described below. Mandatory Tests Perform the following tests in the order shown on all cameras: 1. Ambient Exposure at 100 C/FS. 2. Strobe Exposure (Graywall). Strobe Exposure Test Reading Cannot be Corrected via IR Exposure Calibration Slide If the Strobe Exposure (Graywall) test reading is out of specification and cannot be...
  • Page 40 3. Perform the Blade Speed Test. • If the Blade Speed is within spec but the Strobe Exposure Test reading remains out of spec, replace the exposure flex and retest. • If the Blade Speed Test reading is not within spec, perform the Blade Speed Adjustment.
  • Page 41: Ambient Exposure Test

    Ambient Exposure Test Purpose This Test measures the energy on the film plane during an ambient (visible) light exposure. The Star Tester light integrating sphere provides a constant scene brightness level of 100 candles/ft2. Test Setup 1. Trip the Door Switch on the camera into the down position. 2.
  • Page 42: Display For Flash, Autofocus, Audio And Exposure Adjust Off

    Figure 3-11. Display for flash, autofocus, audio and exposure adjust OFF Note: The display automatically turns off after 30 seconds to conserve power. To turn it on again, press the MODE button or the shutter button. 4. Leave the Photocell on the camera uncovered. 5.
  • Page 43: Strobe Exposure (Graywall) Test

    Strobe Exposure (Graywall) Test Purpose This Test measures the resultant energy on the film plane during a 4.5 - foot (135 cm) graywall exposure. Test Setup 1. Trip the Door Switch on the camera into the down position. 2. Place the camera on the Horn on top of the Tester, with the lens 4.5” from the graywall.
  • Page 44 T est Procedure 1. Press Shutter Button fully and note reading on the Stops Error Meter. 2. Repeat the procedure two more times, noting the Stops Error Meter readings. Compare the readings to the Specification 3. If the test readings are not within Spec, adjust IR Strobe Exposure Calibration Slide and retest.
  • Page 45: Zls (Zonal Lumen Seconds) Graywall Test

    ZLS (Zonal Lumen Seconds) Graywall Test Purpose This Test measures the maximum strobe output. This is done by measuring the energy on the film plane during a 4.5 foot (135 cm) graywall exposure with the shutter blades fully open. Test Setup 1.
  • Page 46 • To turn exposure adjustment OFF: Press the MODE button until the symbol for the Exposure Adjustment function is displayed. Then press the up or down arrow button to remove the bar from beneath the symbol. Press the MODE button once to return to a full display.
  • Page 47: Hybrid (Zls/Blade Speed) Test

    Hybrid (ZLS/Blade Speed) Test Purpose This Test measures the resultant energy on the film plane from full strobe output through partially open blades, to determine whether the blades open at the proper speed and the strobe fires at the proper time. If the results of this test are satisfactory, it means that maximum strobe output, blade speed and ranging are all functioning properly.
  • Page 48 Test Procedure 1. Press the Shutter Button fully and note the reading on the ZLS Meter. 2. Repeat the procedure two more times, noting each Meter reading. Compare the readings to the Specification. 3. If the test readings are not within Spec, perform the Hybrid Adjustment procedure and retest.
  • Page 49: Blade Speed Test

    Blade Speed Test Purpose This Test measures the time between first light detection and 95% blade opening. Test Setup 1. Trip the Door Switch on the camera into the down position 2. Place the camera on the Horn against the Tester window. 3.
  • Page 50: Spectra Pro/Image Pro/Minolta Pro Star Tester Specifications

    Test Procedure 1. Push the Reset button on the Tester, then depress the Shutter Button. Disregard the meter reading (this sets up Tester circuitry). 2. Press the Shutter Button again and watch the Timing Meter carefully. Note the reading that remains constant for two seconds. Compare this reading to the Specification.
  • Page 51: Ambient Exposure Calibration Slide Adjustment

    Ambient Exposure Calibration Slide Adjustment 1. Remove the Top Cover from the camera (Figure 3-16). Warning: HIGH VOLTAGE EXPOSURE! Up to 320V is present on top flash tube terminal (green wire) and at various other locations on the strobe board. Figure 3-16.
  • Page 52: Adjusting Ambient (Visible Light) Calibration Slide

    5. When the Ambient Exposure Test reading is within specification, replace the Test Top Cover with the camera’s own Top Cover. Note: If adjusting the Ambient Calibration Slide fails to bring the readings within specification, refer to Steps 4, 5 and 6 of the Ambient Exposure Test procedure.
  • Page 53: Ir Strobe Exposure Calibration Slide Adjustment

    IR Strobe Exposure Calibration Slide Adjustment 1. Remove the Top Cover from the camera (Figure 3-16). Warning: HIGH VOLTAGE EXPOSURE! Up to 320V is present on top flash tube terminal (green wire) and at various other locations on the strobe board. 2.
  • Page 54 4. Put the Test Top Cover in place and retest the camera. Readjust the IR Strobe Exposure Calibration Slide if necessary, using the Test Top Cover. 5. When the Strobe Exposure Test reading is within specification, replace the Test Top Cover with the camera’s own Top Cover.
  • Page 55: Hybrid Adjustment (Opening Blade Spring)

    Hybrid Adjustment (Opening Blade Spring) 1. Remove the Top Cover from the camera (Figure 3-16). Warning: HIGH VOLTAGE EXPOSURE! Up to 320V is present on top flash tube terminal (green wire) and at various other locations on the strobe board. 2.
  • Page 56: Blade Speed Adjustment

    Blade Speed Adjustment (Opening Blade Spring) 1. Remove the Top Cover from the camera (Figure 3-16). Warning: HIGH VOLTAGE EXPOSURE! Up to 320V is present on top flash tube terminal (green wire) and at various other locations on the strobe board. 2.
  • Page 57: Solenoid 1 Adjustment For Quintic Position

    Solenoid 1 Adjustment for Quintic Position If the movable Quintic lens element travels at too high or too low a speed, its final (focused) position may not be correct for the distance measured by the camera’s sonar system. (If the Quintic moves too fast, for example, the Catch Pawl may not be able to stop it at the correct position.) Quintic speed can be adjusted as follows: 1.
  • Page 58: Adjusting Solenoid 1 To Change Quintic Speed

    To increase Quintic speed, turn screw CCW To decrease Quintic speed, turn screw CW Solenoid 1 Adjusting Screw Figure 3-20. Adjusting solenoid 1 to change quintic speed...
  • Page 59: Section 4 Spectra Pro/Image Pro/Minolta Pro Troubleshooting

    Section 4 - Troubleshooting Basic Requirements and Guidelines Spectra Camera Familiarity Before troubleshooting Spectra Pro/Image Pro Cameras, you should have received training in Spectra servicing methods, have read the Spectra Service Manual, and know how to use the Spectra Troubleshooting Charts. Use of Logic Probe Model PRB-50 Follow all safety precautions and know the correct procedure and switch settings for using this Probe, as described on the first page of the Spectra Troubleshooting Charts.
  • Page 60: One Board Strobe/Exposure Module Connections On Ranging Board

    One Board Strobe/Exposure Module Ranging Board Figure 4-1. One board strobe/exposure module connections on ranging board Gold Contact Fingers Elastomer Figure 4-2. Elastomeric “Zebra” connector...
  • Page 61: Initial Test Procedure For Ranging Board And Lcd Board

    Intermittent Problems Intermittent problems are typically caused by open circuits, resulting from a cold solder joint, contamination (dirt, oil, oxide, etc.) on a connector pad, a loose connection, broken street from a sharp fold in a flex, or a partially seated connector. For intermittent failures involving the Ranging and LCD Boards, Figure 4-3 shows initial “quick check”...
  • Page 62: Abbreviations Used In This Section

    Abbreviations Used in This Section ONEBD One Board Strobe/Exposure Module Features Module Ranging Module Battery End of Pack End of Cycle Film Speed Erect Voltage SOL 1 Solenoid #1 SOL 2 Solenoid #2 STROBE Strobe Board Liquid Crystal Display Module Camera Base Block...
  • Page 63: Operating Problems And Typical Causes

    Operating Problems and Typical Causes Typical causes of these operating problems are listed on the following pages: Problem Page No Dark Slide 4 - 6 Incomplete Dark Slide 4 - 6 Blades don’t Open 4 - 7 No S1 Cycle 4 - 7 Sticky S1/S10 4 - 7...
  • Page 64: No Dark Slide

    No Dark Slide Typical causes: • Motor flex not seated to wireform switch • Poor connection to LCD module • Red or black wire not seated to strobe (J14-J15) • Erect pin missing • Wireform switch block distorted • Flex not seated to motor •...
  • Page 65: Blades Don't Open

    Blades don’t Open Typical causes: • Shutter not seated • SOL 1 not adjusted properly • Wire connectors not connected to SOL 1 or SOL 2 • Kicker spring not seated • Solenoid not seated straight • Sticky blades • No SOL 1 drive •...
  • Page 66: Sensitive S1

    Sensitive S1 Typical causes: • S1/S10 switch distorted No Motor Drive Typical causes: • Motor connector not plugged into One Board • VBATT wire (white) not connected to RM • No contact from VER to battery (red wire) on strobe board •...
  • Page 67: Poor Lcd Module Connection

    Poor LCD Module Connection Typical causes: • Elastomeric connector contaminated • Elastomeric connector damaged • Elastomeric connector size out of spec • Contamination on gold fingers (LCD or RM) • Elastomeric connector screws not tightened • LCD and/or RM excessively warped LCD Display Problems (Missing or Extra Segments, Shadows in Display) Typical causes: •...
  • Page 68: No Self-Timer Or Incorrect Self-Timer Cycle

    No Self-Timer or Incorrect Self-Timer Cycle Typical causes: • Defective LCD module • Defective FM • Self-Timer LED improperly installed • Defective piezo • Piezo cover missing • Piezo not plugged into FM • Defective RM • Brown and white wires on RM revered or unplugged •...
  • Page 69: No End-Of Pack Chime

    No End of Pack (EOP) Chime Typical causes: • See No Piezo, Page 4-11 • Deformed wireform switch (EOP not making) • Defective FM • Counter wheel hang up (See Counter Wheel Hangs Up, Page 4-8) Incorrect Blade Speed Typical causes: •...
  • Page 70: Quintic Hangs Up

    Quintic Hangs Up Typical causes: • Quintic post distorted • Quintic frame damaged • Counterweight • Quintic return spring • Encoder wire not seated • Flash on baseblock Strobe Exposure Adjustment Failure Typical causes: • Photodiode cap not seated • Cal wedges not seated, missing or distorted (check IC, pin 7) •...
  • Page 71: Strobe Doesn't Fire

    Strobe doesn’t Fire Typical causes: • S9 contact bent • Defective strobe • Green and orange wires reversed • Flashtube assembly defective • Orange wire not connected to strobe • White trigger wire not soldered or cold soldered • Flashtube not seated •...
  • Page 72: Ranging To 8 Ft/M Only

    Ranging to 8 FT/M Only Typical causes: • Transducer wires not connected to RM • Defective transducer • Defective prism display board • Defective FM • Incorrect shutter assembly IC Timeout Error Typical causes: • White trigger wire caught under features shield •...
  • Page 73: Wire Connections And Test Points

    Wire Connections and Test Points Figure 4-4 shows the wire connections and test points required for most troubleshooting. Figure 4-4. Wire connections, test points: strobe/exposure module and ranging board...
  • Page 74: Schematic Diagrams

    Schematic Diagrams One Board schematic diagrams are provided on the following pages: Description Figure Page Spectra Pro/Image Pro/Minolta Pro Schematic One Board Strobe/Exposure Module Schematic Ranging Board Schematic Features Module and Display Module Schematic...
  • Page 75 Figure 4-5. Spectra pro/image pro/minolta pro system schematic...
  • Page 76: One Board Strobe/Exposure Module Schematic

    Figure 4-6. One board strobe/exposure module schematic...
  • Page 77: Ranging Board Schematic

    Figure 4-7. Ranging board schematic...
  • Page 78: Features Module And Display Module Schematic

    Figure 4-8. Features module and display module schematic...

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