Philips KV-S5055C Service Manual

Order Number KM71005571CE

Category Number G14

High Speed Color Scanner

Model No. KV-S5055C

TABLE OF CONTENTS

PAG E PAG E

1 GENERAL PRECAUTIONS -------------------------------------4

1.1. Safety Precautions-----------------------------------------4

1.2. Electrical Tests ----------------------------------------------4

1.3. Standard for Repair Service -----------------------------4

1.4. For Service Technicians ----------------------------------5

1.5. About Lead Free Solder (PbF: Pb free) --------------5

1.6. About RoHS -------------------------------------------------5

2 SPECIFICATIONS -------------------------------------------------6 3 COMPONENT IDENTIFICATION ------------------------------8

3.1. Main Part Names and Locations ----------------------8

3.2. Control Panel---------------------------------------------- 10

4INSTALLATION--------------------------------------------------- 11

4.1. Minimum Space Requirements ----------------------- 11

4.2. Included Accessories------------------------------------ 12

4.3. Installing Double-feed Prevention Roller ----------- 13

4.4. When Scanning Documents of Different Sizes Together --------------------------------------------15

4.5. DIMM Module Extension ------------------------------- 17

4.6. Installing DIMM Modules ------------------------------- 19

4.7. Connecting the Scanner to a Personal Computer--------------------------------------------------- 20

4.8. System Requirements ---------------------------------- 21

4.9. Installing the Driver and Software-------------------- 21

5 SECTIONAL VIEW----------------------------------------------- 22

5.1. Bottom Block ----------------------------------------------22

5.2. Back Block ------------------------------------------------- 23

5.3. Upper Block------------------------------------------------ 24

5.4. Lower Block------------------------------------------------ 25

6 MECHANICAL FUNCTION ------------------------------------ 27

6.1. Paper Feed Mechanism (Auto) ----------------------- 27

6.2. Paper Feed Mechanism (Manual) ------------------- 29

6.3. Paper Feed Operation ----------------------------------30

6.4. Glass Cleaning Mechanism (Auto) ------------------ 32

6.5. Detecting Bent Paper ----------------------------------- 32

7 MAINTENANCE -------------------------------------------------- 33

7.1. Maintenance Chart--------------------------------------- 33

7.2. Cleaning ---------------------------------------------------- 34

7.3. Replacing Limited Life Parts--------------------------- 41

8 DISASSEMBLY INSTRUCTIONS---------------------------- 43

8.1. Disassembly Flowchart --------------------------------- 43

8.2. Bottom Block ----------------------------------------------46

8.3. Back Block ------------------------------------------------- 47

8.4. Upper Block------------------------------------------------ 50

8.5. Lower Block------------------------------------------------ 62

9 SERVICE UTILITY & SELF TEST --------------------------- 86

9.1. Main Menu Indication for Service Utility ------------ 86

9.2. List of Functions for Service Utility------------------- 87

9.3. Operation--------------------------------------------------- 89

9.4. Scanner Self-test --------------------------------------- 103

10 TROUBLESHOOTING ---------------------------------------- 106

10.1. Troubleshooting-1 (with no error message on PC)--------------------------------------------------------- 106

10.2. Troubleshooting-2 (with an error message on PC)--------------------------------------------------------- 107

10.3. Requirement After Parts Replacement ----------- 121

11 CIRCUIT DESCRIPTION------------------------------------- 122

11.1. Block Diagram-1 (Image Processing) ------------- 122

11.2. Block Diagram-2 (Board) ----------------------------- 123

11.3. Explanation of Connector----------------------------- 124

12 SCHEMATIC DIAGRAM --------------------------------------132

12.1. CONTROL Board ---------------------------------------133

12.2. PANEL and SENSOR Boards -----------------------159

12.3. RELAY and SENSOR Boards -----------------------168

12.4. DRIVE Board -------------------------------------------- 175

12.5. POWER Board ------------------------------------------179

13 CIRCUIT BOARD -----------------------------------------------180

13.1. CONTROL Board ---------------------------------------181

13.2. PANEL Board--------------------------------------------183

13.3. DFP HOME SENSOR Board ------------------------183

13.4. ENDING SENSOR Board ----------------------------184

13.5. PAPER FEED SELECT SENSOR Board--------- 184

13.6. BENT RELAY Board -----------------------------------184

13.7. BENT PAPER SENSOR R(L) Board---------------185

13.8. BENT PAPER SENSOR R(R) Board -------------- 185

13.9. BENT PAPER SENSOR S(L) Board---------------185

13.10. BENT PAPER SENSOR S(R) Board --------------185

13.11. USS RELAY Board------------------------------------- 186

13.12. USR RELAY Board-------------------------------------187

13.13. USR SENSOR Board----------------------------------188

13.14. SLIP DETECT SENSOR Board---------------------188

13.15. STARTING SENSOR Board ------------------------- 188

13.16. USS / WAITING SENSOR Board------------------- 189

13.17. DRIVE Board -------------------------------------------- 190

13.18. POWER Board ------------------------------------------192

13.19. CCD (F) Board and CCD (B) Board --------------- 194

14 PARTS LOCATION AND MECHANICAL PARTS

LIST ----------------------------------------------------------------196

14.1. Exterior ---------------------------------------------------- 197

14.2. Main Chassis 1 ------------------------------------------199

14.3. Main Chassis 2 ------------------------------------------201

14.4. Sub Chassis 1 -------------------------------------------204

14.5. Sub Chassis 2 -------------------------------------------207

14.6. Board Box ------------------------------------------------ 209

14.7. Packing---------------------------------------------------- 211

14.8. TOOL ------------------------------------------------------213

15 REPLACEMENT PARTS LIST------------------------------ 214

15.1. CONTROL Board ---------------------------------------215

15.2. PANEL Board--------------------------------------------239

15.3. DFP HOME SENSOR Board ------------------------239

15.4. ENDING SENSOR Board --------------------------- 239

15.5. PAPER FEED SELECT SENSOR Board--------- 239

15.6. BENT RELAY Board -----------------------------------239

15.7. BENT PAPER SENSOR R(L) Board---------------239

15.8. BENT PAPER SENSOR R(R) Board -------------- 240

15.9. BENT PAPER SENSOR S(L) Board---------------240

15.10. BENT PAPER SENSOR S(R) Board --------------240

15.11. USS RELAY Board------------------------------------- 240

15.12. USR RELAY Board-------------------------------------242

15.13. USR SENSOR Board----------------------------------243

15.14. SLIP DETECT SENSOR Board---------------------243

15.15. STARTING SENSOR Board ------------------------- 244

15.16. USS / WAITING SENSOR Board------------------- 244

15.17. DRIVE Board -------------------------------------------- 244

15.18. POWER Board ------------------------------------------ 247

1 GENERAL PRECAUTIONS

1.1. Safety Precautions

1. Before servicing, unplug the power cord to prevent electrical shock hazard.

2. When replacing parts, use only manufacture’s recommended components for safety.

3. Check the condition of power cord. Replace if wear or damage is evident.

4. After servicing, be sure to restore the wire dressing, insulation barriers, insulation papers, shields, etc.

5. Before returning the serviced equipment to the customer, perform the following electrical tests to prevent shock hazard.

6. The power supply unit in this scanner contains dangerous levels energy.

1.2. Electrical Tests

1. Unplug the power cord and check for continuity between the earth ground connection on the plug and the metal cabinet. There should be zero ohm resistance found.

2. With the unit unplugged, short the AC Live-Neutral of the plug with a jumper wire.

3. Turn ON the power switch.

4. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such as screwheads, etc.

Note Some exposed parts may be isolated from the chassis by design. They read infinity.

5. If the measurement is less than 1 MΩ, there may be a danger of electric shock.

Note This hazardous condition must be corrected before the unit is returned to the end user.

1.3. Standard for Repair Service

Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires, injury or electric shock, which can be caused by improper repair work.

1. When performing repairs, neither the products nor its parts or components shall be modified.

2. If cable assembly is supplied as the smallest unit when servicing, make sure to replace the cable assembly.

1.4. For Service Technicians

ICs and LSIs are vulnerable to static electricity. When repairing, the following precautions will help to prevent recurring malfunctions.

1. Cover plastic parts with aluminum foil.

2. Ground soldering irons.

3. Use a conductive mat on the worktable.

4. Do not hold IC or LSI pins with bare fingers.

1.5. About Lead Free Solder (PbF: Pb free)

Note

• In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that contains lead.

• We will use PbF when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn), Silver (Ag), and Copper (Cu).

• This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair work we suggest using the same type of solder.

Distinction of PbF PCB

• PCBs manufactured using lead free solder will have a PbF stamp on the PCB.

Caution

• PbF solder has a melting point that is 50 ° - 70 °F, (30 ° - 40 °C) higher than Pb solder. Use a soldering iron with temperature control and adjust it to 700 ° ± 20 °F (370 ° ± 10 °C).

• Exercise care when using higher temperature soldering irons: Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.

• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100 °F (600 °C).

• When applying PbF solder to double layered boards, check the component side for excess solder which may flow onto

the opposite side (See figure below).

1.5.1. Suggested Pb free solder

We recommend you to use the following solder when re-soldering components for repair. Before using other Pb free solder than the following solder, make sure to confirm that the solder maker (you use) has the license agreement for Pb free solder.

Supplier: Senju Metal Industry Co., Ltd. (http://www.senju-m.co.jp) Part Description in Senju: EcoSolder RMA02 P3 M705 Series

1.6. About RoHS

This product is fully compliant with the national laws transposed from the EU Directive on the restriction of the use of certain hazardous substances (RoHS) in electrical and electronic equipment, effective 1st July 2006 in the EU countries.

In order for the product to comply with the RoHS Directive, the six particular substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers) have been either totally eliminated or limited to the concentration level below maximum allowed. Consequently spare parts have been changed to RoHS-compliant parts where applicable. Due to the application of RoHS legislation to spare parts, non-compliant spare parts cannot be used to repair compliant products put on the EU market on or after 1st July 2006. Therefore make sure to order and use RoHS-compliant spare parts listed in this manual.

2 SPECIFICATIONS

Item Model No.

Scanner Scanning Face Duplex

Scanning Method CCD and LED for Front side

Scanning Width 305 mm (12.0 in.)

Readout Speed

Resolution Main scanning direction: 100 - 600 dpi (1 dpi step)

Image Output Binary, Grayscale, Color, MultiStream (Binary and Color, Binary and Grayscale) Tonal Gradation Dither (64 step gradation), Error diffusion (64 step gradation), Grayscale (8 bit), Color (24 bit) Image Control Image emphasis, Dynamic threshold, Automatic separation, Invert, White level from paper Other Functions Patch code detection (Kodak patch 2,3,T), Double feed detection Paper Size

Thickness 0.04 to 0.2 mm (1.6 to 7.9 mils)

CCD and LED for Back side

Black & White: 50 ppm / 100 ipm (A4, 300 dpi, Portrait) Black & White: 70 ppm / 140 ipm (A4, 200 dpi, Portrait) Color (JPEG): 50 ppm / 100 ipm (A4, 300 dpi, Portrait) Color (JPEG): 70 ppm / 140 ipm (A4, 200 dpi, Portrait)

Sub-scanning direction: 100 - 600 dpi (1 dpi step) Optical resolution is 600 dpi.

48 x 70 mm (1.9 x 2.8 in.) to 297 x 432 mm (11.7 x 17 in.)

KV-S5055C Series

Note: 1 mil = 1 / 1000 in.

Weight

20 to 157 g/m

Note: 1 lb. = 3.75 g/m

Detection Empty, Jam, Double-feed detection, and Bent-paper detection Interface USB 2.0 (Connector type: B) Hopper Capacity

Memory Size 32 MB (Standard)

200 sheets [75 g/m

(5.3 to 41.8 lb.)

(20 lb.)]

Note: Additional Memory

Up to 1 GB

Unit External Dimensions

(Width x Depth x Height) Weight 18 kg (40 lb.) Power Requirement AC 100 V to AC120 V, 50 / 60 Hz

Power consumption

Environment Operating Temperature and

Humidity Storage Temperature and Humidity

Accessories Power cord, USB cable, Double-feed Roller Prevention Roller,Cleaning Paper, Blower,

PbF (Pb Free) Applied to PCB assemblies CONTROL, DRIVE, POWER, CCD(F), CCD(B),LED, USS RELAY, USR

Maximum

(Scanning)

Minimum

(Standby)

Sleep Mode 3.5 W or less (AC 100 V to 120 V)

468 x 444 x 339 mm (18.5 x 17.5 x 13.4 in.)

AC 100 V to AC240 V, 50 / 60 Hz

1.0 A (AC 100 V to 120 V)

0.5 A (AC 220 V to 240 V)

0.4 A (AC 100 V to 120 V)

0.2 A (AC 220 V to 240 V)

3.5 W or less (AC 220 V to 240 V) Temperature: 15 °C to 30 °C (59 °F to 86 °F) Humidity: 20 % to 80 %RH Temperature: 0 °C to 40 °C (32 °F to 104 °F) Humidity: 10 % to 80 %RH

Shading Sheet, CD-ROM (Installation Manual, Operation Manual, Device driver, ISIS, TWAIN Image Capture Plus, Quick Scan Pro Demo, User Utility, Control Sheet, Warranty Information(U.S.A. only)), Printed materials (Installation Manual, Safety Guide)

RELAY, USR SENSOR, SLIP DETECT SENSOR, STARTING SENSOR, USS/WAITING SENSOR, PANEL, DFP HOME SENSOR, ENDING SENSOR, PAPER FEED SELECT SENSOR, BENT RELAY, BENT PAPER SENSOR R(L), BENT PAPER SENSOR R(R), BENT PAPER SENSOR S(L), and BENT PAPER SENSOR S(R) Boards

Note: Distinction of PbF PCB

PCBs manufactured using lead free solder will have a PbF stamp on the PCB.

Option

Roller Cleaning Paper (KV-SS03)

Imprinter Unit (KV-SS014)

Ink Cartridge (KV-SS021)

Roller Exchange Kit (KV-SS039)

Flatbed Scanner (KV-SS080)

Note:

: KV-S5055C Series

Model Area Serial No. Power Cord

KV-S5055C USA D36 xxxx 1001 For 100 to 120 V KV-S5055C-J USA (made in Japan) D56 xxxx 1001 For 100 to 120 V KV-S5055C-U Europe, Russia D50 xxxx 1001 For 220 to 240 V KV-S5055C-K Korea D53 xxxx 1001 For 220 to 240 V KV-S5055C-T Taiwan D54 xxxx 1001 For 100 to 120 V KV-S5055C-CN China D57 xxxx 1001 For 220 to 240 V KV-S5055C-B Brasil D52 xxxx 1001 For 220 to 240 V

: The scanning speed depends on the test environment. In addition, it differs depending on the host computer operating

environment or applications.

: KV-SSxxx (All Area except for China) KV-SSxxx-CN (Only for China) (xxx: 03, 014, or 021)

: KV-SS039 (Except for Europe, Russia, and, China) KV-SS039-U (For Europe and Russia) KV-SS039-CN (For China)

3 COMPONENT IDENTIFICATION

3.1. Main Part Names and Locations

3.2. Control Panel

Fig.3.2.1 Function of Control Panel keys and indications

Name Operation Remarks

1 DFS (Double-

feed Skip) key

2 Start/Stop key (1) Push this key to start scanning if you set [Wait Key] to "Manual Feed Mode" in your

3 Ready Indicator This indicator shows the scanner status. 4 Error Indicator This indicator lights when an error occurs.

When a double-feed occurs, push this key to continue scanning the double-feed detected sheet and the following sheet on the Hopper.

application software. (2) During scanning, push this key to stop scanning. (3) If you push this key when a double feed occurs, the sheet that was detected as a double feed will be ejected from the scanner without being scanned. Scanning will stop.

Fig.3.2.2 Scanner status

Ready Indicator Error Indicator Status

(Green) (Red)

ON OFF Ready ON Blink (Slow) Caution* OFF ON Error Blink (Slow) OFF Sleep Blink (Slow) Blink (Slow) Caution* / Sleep Blink (Fast) OFF Warming up Blink (2 times consecutively) OFF Double Feed Skip mode

Note:*

This status indicates one of the following.: "Clean rollers", "Clean Reference Plates", or "Replace rollers" To determine the specific condition, execute "Service Utility", and then check the status message.

4INSTALLATION

4.1. Minimum Space Requirements

Be sure to maintain the recommended space requirements for proper ventilation.

Fig.4.1.1 Dimensions for proper ventilation

Top View

Left-side View

4.2. Included Accessories

Confirm that the following items are included with the scanner.

4.3. Installing Double-feed Prevention Roller

1. Remove all packing tape.

2. Push the ADF Door Release (1) to open the ADF door (2).

3. Pull towards you and remove the Double-feed Prevention Roller Cover by using the indent (1).

4. Install the Double-feed Prevention Roller.

• Align the shaft that is shaped as indicated by (1) with the

notch in the roller mount (2), and then insert the shaft in the

notch. Push the shaft on the opposite side (3) until it clicks into place.

Note

After you install the Double-feed Prevention Roller, make sure that the shaft is inserted into the tab, and that the shaft will not rotate or move. If the roller is not installed correctly, it may cause double feeding or a paper jam.

5. Insert the protrusion (1) of the Double-feed Prevention Roller Cover into the holes on the main unit, and then push in the part of the roller cover indicated by (2) in the direction indicated by the arrows until it clicks into place.

Note

Make sure that the Double-feed Prevention Roller Cover does not stick up. If the cover is not closed properly, paper jams or damage to the paper may occur.

6. Close the ADF Door.

• Push both sides of the ADF Door down slowly until it clicks into place.

4.4. When Scanning Documents of Different Sizes Together

Note

See the following conditions for scanning documents of different sizes together.

• Document thickness The ratio of the thickness between the thickest paper and thinnest paper must be less than 1.5.

• Document size The ratio of the largest paper size to the smallest paper size must be less than 1.5. (The minimum size is A6) For example, if A4 is the smallest paper set on the Hopper, the maximum size for other documents to be scanned together is A3.

1. Set the Manual Feed Selector to "AUTO".

2. Slide the Document Guides Selector in the direction of the arrow to unlock the Document Guides so that the guides can be slid independently from each other.

3. Spread the Document Guides as far apart as they will go.

4. Align the documents along one side of the guides.

5. Slide the Document Guides to align the document position so that the center of the smallest sheet can be fed into the center of the paper slot.

Note: Adjusting the left and right Document Guides to their original position

1. Slide the Document Guides Selector to unlock the Document Guides.

2. Spread the Document Guides as far apart as they will go.

3. Slide the Document Guides Selector to lock the Document Guides.

4.5. DIMM Module Extension

A maximum of 1024 MB (total size for front and back sides) extended memory may be required depending on the combination of the paper size, mode, and resolution. To determine how much extended memory is required for a certain configuration, refer to Fig. 4.5.1 and Fig. 4.5.2.

Note 1:

If configurations requiring a lot of memory (high resolution, color mode, etc.) are used with KV-S5055C Series, the scanning will be suspended intermittently while the data is being transferred to the computer. As a result, the images may be disrupted slightly due to the effect of suspending the scanning. In cases like this, the image quality will be improved by installing additional memory in the scanner. To determine the amount of memory that is required to avoid suspending the scanning, refer to Fig.4.5.1. and Fig.4.5.2.

Note 2:

Originally, CONTROL Board has 32 MB memory built in.

Note 3:

For the additional memory, the scanner requires the same type of memories for each side (Front and Back) to be installed at the same time. (For example: “128” means that you must install 128 MB of memory for front-side scanning and 128 MB of memory for back-side scanning.)

Note 4: Recommended memory

(1) 144 pin SDRAM (Unbuffered SO-DIMM) (2) Non ECC (3) + 3.3 V ± 0.3 V power supply (4) Frequency / CAS Latency: 100 MHz / CL=2 or 133 MHz / CL=2 (5) Support for Full Page Burst (6) Memory size: 128 MB, 256 MB, or 512 MB (7) Height: Less than 31.75 mm (1.25 in.)

Note 5: “X”

“X” in the Fig. 4.5.1 and Fig. 4.5.2 means the scanning will be suspended intermittently (START/STOP function will operate.) even if the maximum amount of memory (total 1024 MB) is installed.

Fig.4.5.1: Additional memory size -1 (Unit: MB)

: 305 mm x 2,540 mm (12.0 x 100 in.)

Mode Size dpi

100 200 300 400 500 600

Binary

SC's Max

0 0 128 128 128 128

Double Letter 00000128 Legal 000000 Letter 000000 A3 00000128 A4 000000 A5 000000 A6 000000 B4 000000 B5 000000 B6 000000

8 bit Gray

SC's Max

128 128 128 256 512 512

Double Letter 0 128 128 128 128 128 Legal 0 0 128 128 128 128 Letter 0 0 128 128 128 128 A3 0 128 128 128 128 128 A4 0 0 128 128 128 128 A5 0 0 0 128 128 128 A6 00000128 B4 0 0 128 128 128 128 B5 0 0 0 128 128 128 B6 0000128128

24 bit Color

SC's Max

256512XXXX

Double Letter 128 128 256 256 512 X Legal 128 128 128 256 256 256 Letter 128 128 128 256 256 256 A3 128 128 256 256 512 X A4 128 128 128 256 256 256 A5 0 128 128 128 256 256 A6 0 128 128 128 128 128 B4 128 128 128 256 256 512 B5 0 128 128 128 256 256 B6 0 128 128 128 128 256

Fig.4.5.2: Additional memory size -2 (Unit: MB)

*1:

305 mm x 2,540 mm (12.0 x 100 in.)

Mode Size dpi

100 200 300 400 500 600 Binary + 8 bit Gray

SC's Max

Double Letter 0 128 128 128 128 128

128128XXXX

Legal 0 128 128 128 128 128 Letter 0 0 128 128 128 128 A3 0 128 128 128 128 128 A4 0 0 128 128 128 128 A5 0 0 0 128 128 128 A6 0 0 0 0 128 128 B4 0 0 128 128 128 128 B5 0 0 128 128 128 128 B6 0 0 0 128 128 128

Binary + 24 bit Color

SC's Max

256512XXXX

4.6. Installing DIMM Modules

1. Remove the Cover Plate. (See 8.2.1.)

2. Insert the DIMM Module into the memory slot (CN0017) on the CONTROL Board in the direction of the arrow (1), and then push the module down in the direction of the arrow (2) until the notches of the module on both sides lock into place.

3. Insert another DIMM Module similarly into the other memory slot (CN0018) on the CONTROL Board.

4.7. Connecting the Scanner to a Personal Computer

Connect the accessories’ Power Cord and USB cable to the back of the unit.

Caution:

1. Only use the Power Cord and USB Cable enclosed in this scanner.

2. Be sure to connect the scanner directly to the USB interface port on the PC. We cannot guarantee that the scanner will work properly if it is connected to a USB hub.

4.8. System Requirements

When using the scanner, the minimum system requirements are as follows.

Computer IBM PC/AT or compatible machine with a CD-ROM drive CPU

Operating System

Interface USB 2.0 Memory 1 GB Hard Disk Drive 5 GB free space is required.

Note

1. The above system requirements may not meet the requirements of all operating systems and bundled application software.

2. The scanning speed differs depending on the host computer’s operating environment or application.

3. If you connect the scanner to a USB hub, it is not guaranteed to work.

Abbreviations

• Windows

• Windows® XP refers to the Microsoft® Windows® XP operating system (hereafter Windows XP).

• Windows Vista® refers to the Microsoft® Windows Vista® operating system (hereafter Windows Vista).

• Windows® 7 refers to the Microsoft® Windows® 7 operating system (hereafter Windows 7).

Trademarks

1. Intel and Intel Core are trademarks of Intel Corporation in the U.S. and other countries.

2. Microsoft, Windows, and Windows Vista are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

3. All other trademarks identified herein are the property of their respective owners.

refers to the Microsoft® Windows® operating system (hereafter Windows).

Intel® Core™ 2 Duo, 1.8 GHz or higher

Windows

XP (64 bit Edition is not supported.), Windows Vista®, or Windows®7

4.9. Installing the Driver and Software

Following the instructions in the scanner’s Installation Manual, install the scanner driver and software that is included on the enclosed CD-ROM.

5 SECTIONAL VIEW

5.1. Bottom Block

5.2. Back Block

5.3. Upper Block

5.4. Lower Block

5.4.1. Mechanical Parts

5.4.2. Boards

6 MECHANICAL FUNCTION

6.1. Paper Feed Mechanism (Auto)

(Fig. 6.1.1)

1. When the documents are set on the Hopper and the scanning command is issued from PC, the Conveyor Motor will be driven to rotate the three Drive Rollers (Drive Roller 1 to 3) and Exit Roller. And at this time, the gate will open.

2. Then, the Paper Feed Motor will be driven to rotate the Paper Feed Roller and the Separation Roller in the feed direction. At this time, the Paper Feed Roller will move down until the roller is in contact with the documents, which enables the roller to feed the documents. The Double-feed Prevention Roller is supported by shaft fixed via a torque limiter, and it is pushed against the Separation Roller.

3. When documents enter the separation section, the Double-feed Prevention Roller exerts a manipulation force onto them, which depends on a set torque. In the case of continuous paper feed, the documents are separated by this manipulation force, so only one sheet of the documents is fed to the scanning section. When the document passes through the Waiting Sensor, the Paper Feed Motor will be driven to rotate the Double-feed Prevention Roller in the reverse direction to ensure separation of the first document from the following documents. At this time, the Paper Feed Roller rises to separate from the documents.

4. Then, the leading edge of the document advances to the Drive Roller 1 position, and then passes through the Slip Detect Sensor. At this time, if the document does not advance within a defined period, the pressure applied to the Separation Roller from the Double-feed Prevention Roller is strengthened to prevent the document from slipping. (For the pressure mechanism, see Fig. 6.1.2.) When the leading edge of the document reaches the Slip Detect Sensor, the Paper Feed Motor will stop.

(Fig. 6.1.2) Pressure Mechanism

5. When the leading edge of the document passes through the Starting Sensor, image scanning starts after a defined period. (i.e., the time required for the document to advance from the Starting Sensor to the scanning start point)

6. The document passes through the Exit Sensor and exits from the scanner.

7. When the trailing edge of the document passes through the Waiting Sensor, the Paper Feed Motor is driven again to feed the 2nd document.

8. 2 to 7 above are repeated.

Note:

When the scanner’s buffer becomes full, the scanner stops to prevent buffer overflow, while continuing to allow data to be transferred to the PC.

6.2. Paper Feed Mechanism (Manual)

When scanning multipart paper with the Manual Feed Selector set to “AUTO”, the Double-feed Prevention Roller is pressed against the Separation Roller, and this results in a separating force being applied to the document, which will separate the layers, resulting in damage to the document. This problem can be avoided by scanning multipart paper with the Manual Feed Selector set to "Manual". With “MANUAL” set, the Double-feed Prevention Roller's gear is released from the Paper Feed Pitch Roller, and so multipart paper can be fed and scanned as if it were a single sheet of paper. (In this case, the Double-feed Prevention Roller operates as a free roller.)

Note:

Do not scan multipart paper with the Manual Feed Selector set to “AUTO”. When scanning multipart paper, be sure the Manual Feed Selector is set to “MANUAL”.

6.3. Paper Feed Operation

1. When the Paper Feed Motor rotates the Paper Feed Motor in the paper feed direction, Paper Feed Roller will go down until the roller is in contact with, and then rotate in the paper feed direction. (Arrows 1 →2 → 3 → 4) At this time, Separation Roller will also rotate in the paper feed direction. (Arrows 1 →2 → 3)

+ 219 hidden pages

Philips KV-S5055C Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual