Related Manuals for Polaroid SS35 LE
Summary of Contents for Polaroid SS35 LE
- Page 1 Repair Manual SprintScan Slide Scanner SS35 LE 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
SprintScan 35LE Service Manual Table of Contents Table of Contents Page 1 - Functional Description ................Photoelectric Converter ................Analog-to-Digital Converter ................ Data Transfer Module ................. Command and Message Transfer ............... 2 - Disassembly ....................Removing Scanner Upper Housing ............. Removing Scanner Lamp ................ - Page 3 SprintScan 35LE Service Manual Table of contents List of Illustrations Figure Page Simplified Block Diagram ............... Photoelectric Converter ................. CCD Output Waveform ................CCD Output Signal After Bias Restored ..........Removing Lamp Lid ................Removing Scanner Lamp ..............Removing Upper Housing..............Installing Upper Housing ...............
-
Page 4: Functional Description
SprintScan 35LE Service Manual Functional Description 1 - Functional Description The SprintScan 35LE (Figure 1-1) is a high-speed, high-resolution slide scanner that converts pictures on slide into binary code for further processing by a host computer. Photo- Analog- Data Image Electric Host To-Digital... -
Page 5: Analog-To-Digital Converter
SprintScan 35LE Service Manual Functional Description As shown in Figure 1-2, light from the lamp passes through the slide onto the surface of the CCD, which generates electrical signals proportional to the intensity of the light. The CCD is operated so that the magnitude of the electrical signal is linearly proportional to the intensity of received light. -
Page 6: Data Transfer Module
SprintScan 35LE Service Manual Functional Description From Figure 1-4 it can be seen that the CCD signal is smoother and the bias voltage is independent of CCD characteristics. The reference voltage is derived through a process called calibration. Because of the characteristics of lamp and lens, the magnitude of the CCD’s output is lower toward the beginning and end of a scan line than it is in the central portion, even when the input slide is uniformly white. -
Page 7: Disassembly
SprintScan 35LE Service Manual Disassembly 2 - Disassembly This section of the Service Manual describes SprintScan 35LE disassembly procedures. Before carrying out any of the procedures described in this section, make sure that the scanner has been turned off and the power cord has been disconnected. To prevent any chance of electric shock, the SprintScan 35LE housing should only be opened by qualified service personnel, and only after the scanner has been disconnected from the power source. -
Page 8: Removing Scanner Lamp
SprintScan 35LE Service Manual Disassembly 3. Remove the scanner lamp (Figure 2-2). Figure 2-2. Removing scanner lamp 4. Remove the four (4) screws (Figure 2-3) securing the bottom case, then remove the upper housing. The latch of the base housing may fall off. Figure 2-3. -
Page 9: Installing Upper Housing
SprintScan 35LE Service Manual Disassembly To put the scanner upper housing back on, follow these steps: 5. Put the latch seated into its position, close the upper housing, align the tabs on the bottom of the upper housing with the slots at the front and rear of the bottom case, snap the housing back on (Figure 2-4) . -
Page 10: Removing Scanner Lamp
READY indicator fails to come on and a lamp failure report is returned when the N or S command is sent. • Only use replacement lamps obtained from Polaroid or an authorized distributor. Use of any other lamp may adversely affect scanning results. -
Page 11: Removing Main Pc Board
SprintScan 35LE Service Manual Disassembly 1. Turn off the power and disconnect the power cord. 2. Remove the upper housing. 3. Remove the four (4) screws securing the main PC board (Figure 2-6). Figure 2-6. Removing main PC board 4. Disconnect all connectors and then lift out the main PC board (Figure 2-7). Figure 2-7. -
Page 12: Major Component Numbers
SprintScan 35LE Service Manual Disassembly 5. Major component numbers are shown in Figure 2-8. M-922 To Carriage Motor SCSI Interface To Filter Motor SCSI ID To Fan To Power Supply To Voltage CCD Counector Figure 2-8. Major component numbers... -
Page 13: Removing Chassis Assembly (With Filter/Motor)
SprintScan 35LE Service Manual Disassembly Removing Chassis Assembly (with Filter\Motor) 1. Turn off the power and disconnect the power cord. 2. Remove the upper housing. 3. Remove the main PC board. 4. Remove the three (3) screws (Figure 2-9) securing the chassis assembly. 5. - Page 14 SprintScan 35LE Service Manual Disassembly Photo sensor Figure 2-10. Filter assembly alignment...
-
Page 15: Removing Power Supply
SprintScan 35LE Service Manual Disassembly Removing Power Supply 1. Turn off the power and disconnect the power cord. 2. Remove the upper housing. 3. Remove the main PC board. 4. Remove the chassis assembly. 5. Remove the four (4) screws securing the power supply (Figure 2-11) to the bottom case. -
Page 16: Removing Scanner Fuses
SprintScan 35LE Service Manual Disassembly Removing Scanner Fuses Notes: • If the POWER indicator, READY indicator and scanner lamp all fail to light up when the SprintScan 35LE scanner is turned on, first make sure that power exists at the source. •... -
Page 17: Replacing Power Supply Fuse
SprintScan 35LE Service Manual Disassembly Replacing Power Supply Fuse 1. Turn off the power and disconnect the power cord. 2. Remove the scanner upper housing. 3. Remove the main PC board. 4. Remove the broken fuse (Figure 2-13) and replace it with a new one. Fuse rating: 2.5A/250V or T2.5A/250V (Europe). -
Page 18: Removing Ac Inverter
SprintScan 35LE Service Manual Disassembly Removing AC Inverter 1. Turn off the power and disconnect the power cord. 2. Remove the upper housing. 3. Remove the screw securing the AC Inverter (Figure 2-14) to the bottom case. 4. Disconnect the four (4) cables connected to the scanning lamp. Lift out the AC Inverter. -
Page 19: Troubleshooting
SprintScan 35LE Service Manual Troubleshooting 3 - Troubleshooting Scanner failures can be divided into three major categories: electrical, optical and mechanical. Here are the functional inspection steps: • Power up the scanner/host system. • Wait for the scanner’s READY indicator to light up steadily. •... - Page 20 SprintScan 35LE Service Manual Troubleshooting Table 3-1. Troubleshooting Guide Problem Possible Cause Corrective Action POWER LED off • Incorrect voltage Make sure voltage is correct. after scanner to power supply powered up • Burned out or Replace burned out or broken fuse. broken fuse Refer to replacement procedure in Section 2 of this the Service Manual.
- Page 21 SprintScan 35LE Service Manual Troubleshooting Table 3-1. Troubleshooting Guide (Con't) Problem Possible Cause Corrective Action READY LED off • Scanner lamp Refer to Scanner Lamp test procedure after scanner failure in this Section of the Service Manual. powered up • CCD module A failure in the CCD module affects the failure CCD output waveform.
- Page 22 SprintScan 35LE Service Manual Troubleshooting Table 3-1. Troubleshooting Guide (Con't) Problem Possible Cause Corrective Action Carriage motor • Position sensor Refer to Position Sensor test inoperative or failure procedure in this Section of the moves in wrong Service Manual. direction •...
-
Page 23: Checking Power Supply Output Voltages
SprintScan 35LE Service Manual Troubleshooting Checking Power Supply Output Voltages 1. Open the scanner housing as explained in Section 2 of this Service Manual. 2. Disconnect the power supply output cable from main PC board connector J6 (Figure 3-2). 3. Connect a load resistor (5-50 ohms, 10 W) between Pin 1 and Pin 2, and Pin 1 and Pin 6 of connector J6. -
Page 24: Checking For Short Circuit On Main Pc Board
SprintScan 35LE Service Manual Troubleshooting Checking for Short Circuit on Main PC Board 1. If applicable, reconnect power supply to main PC board, and then unplug connectors J1, J2, J3, J5, and J7. 2. Power up the scanner and then measure all power supply output voltages. Notes: •... -
Page 25: Checking Scanner Lamp
SprintScan 35LE Service Manual Troubleshooting Checking Scanner Lamp Note: Scanner lamp failure may be caused by : • burned out lamp, • incorrect lamp installation, or • AC inverter failure. 1. Check ends of lamp. If ends are black indicating a burned-out lamp, replace it. 2. -
Page 26: Checking Ccd Module
SprintScan 35LE Service Manual Troubleshooting Checking CCD Module Note: A failure in the CCD module affects the CCD output waveform. Figure 3-3 shows the preprocessing and the post-processing CCD output waveform. Preprocessing CCD Output Waveform at J7 Pin 16 Post-processing CCD Output Waveform at TP1 Votage... -
Page 27: Pin Assignment For Connector J7
SprintScan 35LE Service Manual Troubleshooting 1. Unplug connector J7 and check the CCD module output signals. Figure 3-4 shows the pin designations for connector J7. Note: The signals that drive the CCD module are outputted at connector J7 on the main PC board. -
Page 28: Checking For Main Pc Board Failure
SprintScan 35LE Service Manual Troubleshooting Checking for Main PC Board Failure 1. Check the output signal at test point TP2. Figure 3-6 shows the correct output waveform. Votage 0 3.5V Time 2.5 msec 64 msec Figure 3-6. Post-processing CCD Output Waveform at TP2 2. -
Page 29: Checking Filter Stepper Motor Malfunction
SprintScan 35LE Service Manual Troubleshooting Checking Filter Stepper Motor Malfunction 1. Check to see if the filter assembly jams at the notch of the position sensor. 2. Check to see if the wire that connects to the main PC board connector (J3) is loose, inserted at the wrong position, or broken. -
Page 30: Checking Carriage Stepper Motor Malfunction
SprintScan 35LE Service Manual Troubleshooting Checking Carriage Stepper Motor Malfunction Position Sensor Error Note: The position photo sensor mounted on the main board marked S2, is used to establish the carriage home position at power-up, and before and after scanning. Proper positioning ensures that scanning will not begin before the scanning window is within view of the CCD. -
Page 31: Stepper Motor Malfunction
SprintScan 35LE Service Manual Troubleshooting Stepper Motor Malfunction 1. Check to see if the wire that connects to the main PC board connector J1 is loose, inserted at the wrong position, or broken. 2. Turn power off, unplug connector J1, then power up again. 3. -
Page 32: Optical Problems
SprintScan 35LE Service Manual Troubleshooting Optical Problems Optical problems usually affect only image quality and not scanner operation. Once the scanner power-up, self-test and communications link-up are all successfully completed, images can be scanned, displayed on a monitor and inspected with the zoom function. Checking Focus and Alignment Notes: •... -
Page 33: Ccd Response (Correct Focus And Alignment)
SprintScan 35LE Service Manual Troubleshooting Oscilloscope Display Logic Analyzer Display [Waveform/Trace] ___________________________________ Analog [5 s] [Single] Sample Period Trace Mode [Start] After Trigger Trace 0000 [ns] Trigger [Immediate] 0.0 mV [ 1 ] -2 V -5 V Figure 3-7. CCD response (correct focus and alignment) -
Page 34: Ccd Response (Incorrect Focus And Alignment)
SprintScan 35LE Service Manual Troubleshooting Improper Focus [Waveform/Trace] ___________________________________ Analog [5 s] [Single] Sample Period Trace Mode [Start] After Trigger Trace 0000 [ns] Trigger [Immediate] 0.0 mV [ 1 ] -2 V -4 V Improper Focus and Alignment [Waveform/Trace] ___________________________________ Analog [5 s] Sample Period... -
Page 35: Correcting Focus And Alignment Problems
Note: If the lens or the CCD module is out of alignment, install a new CCD module and return the old one to Polaroid for repair. 1. With the scanner and oscilloscope set up as described in the preceding section, loosen the lens setscrew, and then break the contact adhesive holding the lens in place. -
Page 36: Noise Problems
SprintScan 35LE Service Manual Troubleshooting Noise Problem If frictional noises are generated when the SprintScan 35LE is in scanning, the linear bearing guide or lead is possibly in short of lubrication. Lubricate the surface on both components, be applying to the entire traversing range. Note: The recommended specification is API SF/CC heavy duty motor oil.
Need help?
Do you have a question about the SS35 LE and is the answer not in the manual?
Questions and answers