BIXOLON 352plusA, SRP-350 User Manual

Download

Service Manual

SRP-350/352plusA&C

Thermal Printer

Rev. 2.01

http://www.samsungminiprinters.com

SRP-350/352plusA&C

■ Table of Contents

1. Precaution Segment....................................................................................................................................4

1-1 Safety Precautions................................................................................................................................... 4

1-2 Servicing Precaution................................................................................................................................5

1-3 Precaution for Electrostatically Sensitive Devices (ESDs) ......................................................................6

1-4 Operational Precautions ..........................................................................................................................6

2. Installation and Operation ..........................................................................................................................7

2-1 Installation................................................................................................................................................7

2-1-1 AC Adapter Installation .....................................................................................................................7

2-1-2 Interface Cable Installation ...............................................................................................................7

2-1-3 Cash Drawer Cable Installation ........................................................................................................7

2-1-4 Paper Roll Installation ....................................................................................................................... 7

2-1-5 Wall Mount Installation......................................................................................................................8

2-2 Operation ...............................................................................................................................................10

2-2-1 Setting the DIP switches.................................................................................................................10

2-2-2 Setting the DIP switch (RS-232C Serial Interface) ......................................................................... 10

2-2-3 Setting the DIP switch (IEEE1284 Parallel, USB Interface) ...........................................................11

2-2-4 Hexadecimal Dumping....................................................................................................................12

2-2-5 The self Test Mode .........................................................................................................................12

2-2-6 Setting the Memory Switches .........................................................................................................14

3. Product Specifications.............................................................................................................................. 16

3-1 Appearance............................................................................................................................................16

3-1-1 Printer Dimensions (mm) ................................................................................................................16

3-1-2 AC Adapter Dimensions (mm) ........................................................................................................16

3-1-3 Feature Locations-SRP-350/352plusA/C TYPE .............................................................................17

3-2 General Specifications...........................................................................................................................18

3-3 Thermal Printer Specifications...............................................................................................................19

3-3-1 Printer Specification ........................................................................................................................19

3-3-2 Character Specification...................................................................................................................19

3-3-3 Paper Specification .........................................................................................................................20

3-3-4 Reliability and Environment Specification.......................................................................................20

3-3-5 Printable Area .................................................................................................................................21

3-3-6 TPH (Thermal Printer Head) Specification .....................................................................................21

3-3-7 Other Component Specification......................................................................................................22

3-4 SMPS Specifications .............................................................................................................................23

3-4-1 SMPS (Switching Mode Power Supply) Specification ....................................................................23

3-4-2 SMPS Output Connector ................................................................................................................23

3-5 Interface Specifications.......................................................................................................................... 24

3-5-1 RS-232C Serial Interface................................................................................................................24

3-5-2 IEEE1284 Parallel Interface............................................................................................................ 26

3-5-3 USB2.0 Interface.............................................................................................................................28

3-6 Cash Drawer Specifications................................................................................................................... 31

3-6-1 Drawer Cable ..................................................................................................................................31

3-6-2 Cable Connection ...........................................................................................................................31

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SRP-350/352plusA&C

4. Hardware ....................................................................................................................................................32

4-1 Wiring Diagram ......................................................................................................................................32

4-2 Block Diagram........................................................................................................................................33

4-3 Special Circuit Descriptions...................................................................................................................34

4-3-1 Power Circuit................................................................................................................................... 34

4-3-2 RESET Circuit.................................................................................................................................35

4-3-3 Buzzer and Cash Drawer Circuits................................................................................................... 36

4-3-4 I/F PBA Detect Block Diagram........................................................................................................37

4-3-5 RS-232C Communication Block Diagram.......................................................................................37

4-3-6 Parallel Communication Block Diagram .........................................................................................38

4-3-7 USB Communication Block Diagram .............................................................................................. 38

4-3-8 DIP Switch Circuit ...........................................................................................................................39

4-3-9 Thermal Printer Head Circuit ..........................................................................................................40

5. Disassembly and Assembly .....................................................................................................................41

5-1 Case lower block ...................................................................................................................................41

5-2 Case Upper block ..................................................................................................................................43

5-3 Frame block ...........................................................................................................................................45

6. Adjustments and Maintenance.................................................................................................................48

6-1 Adjustment.............................................................................................................................................48

6-1-1 Remaining Roll Paper Adjustment..................................................................................................48

6-1-2 Paper Jam....................................................................................................................................... 49

6-2 Maintenance ..........................................................................................................................................50

7. Troubleshooting ........................................................................................................................................ 51

7-1 Power Problem ......................................................................................................................................51

7-2 System Problem.....................................................................................................................................52

7-3 Panel PBA and Sensor Problem............................................................................................................53

7-4 Thermal Printer Head and Feed Motor Problem ...................................................................................54

7-5 Auto Cutter and Drawer Problem...........................................................................................................55

7-6 Dip S/W and I/F PBA Select Problem....................................................................................................56

7-7 RS-232C Serial Communication Problem .............................................................................................57

7-8 IEEE-1284 Parallel Communication Problem........................................................................................58

7-9 USB2.0 Communication Problem..........................................................................................................59

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SRP-350/352plusA&C

1. Precaution Segment

1-1 Safety Precautions

1. Be sure that all of the built-in protective devices are replaced. Restore any missing protective shields.

2. When reinstalling the chassis and its assemblies, be sure to restore all protective devices including:

nonmetallic control knobs and compartment covers.

3. Make sure that there are no cabinet openings through which people – particularly children - might insert fingers and contact dangerous voltages. Such openings include excessively wide cabinet ventilation slots and improperly fitted covers and drawers.

4. Leakage Current Hot Check:

WARING: Do not use an isolation transformer during this test. Use a leakage-current tester or a metering system that complies with American National Standards

Institute (ANSI C101.1, Leakage Current for Applications), and Underwriters Laboratories (UL Publications

UL1410, 59.7). With the unit completely reassembled, plug the AC line cord directly into a 100VAC or 240VAC outlet of the Adaptor.

With the unit’s AC switch first in the ON position and then OFF, measure the current between a

known Earth ground (metal water pipe, conduit, etc.) and all exposed metal part, including: metal cabinet, frame, and screw-heads and printer. The current measure should not exceed 0.1 milliamp. Reverse the power-plug prong in the AC outlet and repeat the test.

5. Design Alteration Warning: Never alter or add to the mechanical or electrical design of the ECR. Unauthorized alterations might create

a safety hazard. Also any design changes or additions will void the manufacture’s warranty.

6. Components, parts and wiring that appear to have overhead or that are otherwise damaged should be

replaced with parts that meet the original specifications. Always determine the cause of damaged or overheating and correct any potential hazards.

7. Observe the original lead dress, especially near the following areas: sharp edges, and especially the AC

and high voltage supplies. Always inspect for pinched, out-of-place, or frayed wiring. Do not change the spacing between components and the printed circuit board. Check the AC power cord

for damage. Make sure that leads and components do not touch thermally hot parts.

8. Product Safety Notice: Some electrical and mechanical parts have special safety-related characteristics, which might not be

obvious from visual inspection. These safety features and the protection they give might be lost if the

replacement component differs from the original-even if the replacement is rated for higher voltage,

wattage, etc. Components that are critical for safety are indicated in the circuit diagram by shading, ( )or ( ). Use replacement components that have the same ratings, especially for flame resistance and dielectric

strength specifications. A replacement part that does not have the same safety characteristics as the

original might create shock, fire or other hazards.

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SRP-350/352plusA&C

1-2 Servicing Precaution

WARNING 1: First read the Safety Precaution section of this manual. If some unforeseen

circumstance creates a conflict between the servicing and safety precautions, always follow the safety precaution.

WARNING 2: An electrolytic capacitor installed with the wrong polarity might explode.

1. Always unplug the unit’s AC power cord from the AC power source or the Power Switch off before attempting to: (a) Remove or reinstall any component or assembly,

(b) Disconnect an electrical plug or connector,

2. Some components are raised above the printed circuit board for safety.

An insulation tube or tape is sometime used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such elements to their original position.

3. After servicing, always check that the screws, components and wiring have been

correctly reinstalled.

Make sure that the portion around the serviced part has not been damaged.

4. Check the insulation between the blades of the AC plug and accessible conductive parts

(example: metal panels and input terminals).

5. Insulation Checking Procedure: Disconnect the power cord from the AC source and

turn the power switch

ON. Connect an insulation resistance meter (500V) to the blades of the AC plug.

The insulation resistance

between each blade of the AC plug and accessible conductive parts (see above) should be

greater than 1 mega-ohm.

6. Never defeat any of the B+ voltage interlock. Do not apply AC power to the unit

(or any of its assemblies)

unless all solid-state heat sinks are correctly installed.

7. Always connect an instrument’s ground lead to the instrument chassis ground before

connecting the positive lead; always remove the instrument’s ground lead last.

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SRP-350/352plusA&C

1-3 Precaution for Electrostatically Sensitive Devices (ESDs)

1. Some semiconductor (solid state) devices are easily damaged by static electricity. Such components are

called Electrostatically Sensitive Devices (ESDs); examples include integrated circuits and some field-effect

transistors. The following techniques will reduce the occurrence of component damaged caused by static electricity.

2. Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge

from your body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device.

(Be sure to remove it prior to applying power-this is an Electric shock precaution.)

3. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to

prevent accumulation of electrostatic charge.

4. Do not use freon-propelled chemical. These can generate electrical charges that damage ESDs.

5. Use only a grounded-tip soldering iron when soldering or unsoldering ESDs.

6. Use only an anti-static solder removal device. Many solder removal devices are not rated as anti-static; these can accumulate sufficient electrical charge to damage ESDs.

7. Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive materials.

8. Immediately before removing the protective material from the leads of a replacement ESD, touch the

protective material to the device will be installed.

9. Minimize body motions when handling unpacked replacement ESDs. Motions such as brushing clothes

together, or lifting a foot from a carpeted floor can generate enough static electricity to damaged an ESD.

1-4 Operational Precautions

1. The heating element of the printer mechanism’s thermal head and the driver IC are easily damaged. Never allow these components to come into contact with metal or other hard objects.

2. Never touch the printer mechanism’s heating element with your hand. Doing so can damage the heating

element and affect proper operation.

3. The head and motor areas are very hot during and immediately after printing. Do not touch components

in these areas directly with your hand.

4. Do not use any paper other than these specified in this manual otherwise print head reliability and print

quality are affected adversely.

5. Thermal paper starts to color at around 70ºC. Take care to protect unused and printed thermal paper

against the affects of heat, light and characters on the paper to feed.

6. Take the roll paper out of the printer when you will not use the printer for a long time in a high

temperature and humidity environment.

Rev. 2.01

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2. Installation and Operation

2-1 Installation

2-1-1 AC Adapter Installation

2-1-2 Interface Cable Installation

SRP-350/352plusA&C

Interface Connector

Figure 2-1 AC Adapter Installation

1. Mack sure the printer is turned off with the

side of the switch.

2. Plug the DC cord connector into the power jack

on the printer. (Plug the flat side down)

3. Plug the AC Adapter power cord into the wall

outlet.

2-1-3 Cash Drawer Cable Installation

Cash Drawer

Connector

Interface Cable

Figure 2-2 I/F Cable Installation

1. Turn off the printer, host ECR and Computer.

2. Plug RS-232, USB or Parallel Cable connector into the I/F connector on the printer.

3. Tighten the screws on both sides of the connector.

4. Turn on the printer, host ECR and Computer.

2-1-4 Paper Roll Installation

Cash Drawer Cable

Figure 2-3 Cash Drawer Cable Installation

1. Turn the printer off.

2. Plug the cash drawer cable connector into the connector on the printer. (To remove the cash drawer cable, press

the clip on the connector, grasp the connector and pull it out.)

Rev. 2.01

Figure 2-4 Paper Roll Installation

1. Open the cover printer and remove the used paper roll core if there is one.

2. Load the paper roll on the paper holder as

shown.

3. Close the cover printer.

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SRP-350/352plusA&C

2-1-5 Wall Mount Installation

1. Remove the three screw from the bottom of The Case lower. Separate the Case lower From the Main body.

2. Attach the Plate-Spring to the right side of

Frame-body and tighten a screw as illustrated

3. After assembling the Case lower to set Body, Turn the Set over and attach the BRKT Hanger To the Case lower then tighten four screws.

4. Attach the BRKT Mount to the wall firmly

With the eight screws.

Rev. 2.01

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5. Be sure that the BRKT attached properly to match the direction of arrow as follow. and the BRKT Mount should be always fixed vertically.

SRP-350/352plusA&C

Rev. 2.01

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SRP-350/352plusA&C

2-2 Operation

2-2-1 Setting the DIP switches

The DIP switches are located on the bottom of the printer. The DIP switches are used to set the printer to perform various functions. Follow these when changing DIP switches setting :

1. Turn the printer power switch off.

2. Remove the screw on the bottom of the printer and open the bracket.

3. Flip the DIP switches using tweezers or another marrow-ended tool. Switches are in when up and off when off down in the Figure 3-12.

4. The new setting takes effect when you turn on the printer.

Note : Always change DIP switch settings only when the

printer is turned off. Change made with the power on have no effect and then on again.

Figure 2-5 Setting the DIP switches

2-2-2 Setting the DIP switch (RS-232C Serial Interface)

• DIP Switch 1 SW Function ON OFF Default

1-1 Auto Line Feed Enable Disable OFF 1-2 Handshaking XON/XOFF DTR/DSR OFF 1-3 Data Length 7bits 8bits OFF 1-4 Parity Check Yes No OFF 1-5 Parity Selection EVEN ODD OFF 1-6 OFF 1-7 ON

Baud Rate Selection (bps) Refer to the following table 1

1-8

• DIP Switch 2 SW Function ON OFF Default

2-1 Reserved - - OFF 2-2 Internal bell control Internal bell disable Internal bell enable OFF 2-3 Auto Cutter Disable Enable OFF

2-4 BUSY Condition Receive Buffer Full

* Offline

* Receive Buffer Full 2-5 OFF 2-6 OFF

Print Density Refer to the following table 2 2-7 2-8 Near-End Sensor Status Disable Enable OFF

OFF

Rev. 2.01

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SRP-350/352plusA&C

2-2-3 Setting the DIP switch (IEEE1284 Parallel, USB Interface)

• DIP Switch 1 SW Function ON OFF Default

1-1 Auto Line Feed Enable Disable OFF 1-2

1-8

• DIP Switch 2 SW Function ON OFF Default

2-1 Reserved - - OFF 2-2 Internal bell control Internal bell disable Internal bell enable OFF 2-3 Auto Cutter Disable Enable OFF

2-4 BUSY Condition Receive Buffer Full 2-5 OFF

2-6 OFF 2-7 2-8 Near-End Sensor Status Disable Enable OFF

• Table 1 – Baud rate (bps) Selection

• Table 2 – Print Density Selection

※ Auto Cutter Enable / Disable selection

Reserved - - OFF

* Offline * Receive Buffer Full

Print Density Refer to the following Table 2

Transmission Speed 1-6 1-7 1-8 Default

2400 ON OFF OFF 4800 ON OFF ON

9600 OFF ON OFF 19200 OFF OFF OFF 38400 OFF ON ON 57600 OFF OFF ON

115200 ON ON ON

2-5 2-6 2-7 Print Density (Mono color) Default ON ON Reserved 1(Light)

OFF OFF Reserved 2

ON OFF Reserved 3

OFF ON Reserved 4(Dark)

2-5 2-6 2-7 Print Density (Two colors ) Default ON ON ON 80%

ON ON OFF 90% OFF OFF ON 95% OFF OFF OFF 100%

ON OFF ON 105%

ON OFF OFF 110% OFF ON ON 120% OFF ON OFF 130%

Dip Switch Set 2

SW 2-3

Application Ignores Auto Cutter error for continuous printing.

ON Auto Cutter Disabled

OFF Auto Cutter Enabled

OFF

9600

100%

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SRP-350/352plusA&C

2-2-4 Hexadecimal Dumping

This feature allows experienced users to see exactly what data is coming to the printer. This can be useful in finding software problems. when you turn on the hexadecimal dump function, the printer prints all commands and data in hexadecimal format along with a guide section to help you find specific commands. To use the hexadecimal dump function, follow these steps :

1. After you make sure that the printer is off. Open the cover.

2. Turn on the printer, while holding down the FEED button.

3. close the cover, then the printer enters the hexadecimal dump mode.

4. Run any software program that sends data to the printer. The printer will print all the codes it receives in a two-column format. The first column contains the hexadecimal codes and the second column gives the ASCII characters that corresponds to the codes.

1B 21 00 1B 26 02 40 40 . ! . . & @ @

02 0D 1B 44 0A 14 1E 28 . . . D . . . . (

00 01 0A 41 0D 42 0A 43 . . . A . B . C

Note : A period(.) is printed for each code that no ASCII equivalent. Note : During the hex dump all commands expect DLE EOT and DLE ENQ are disabled.

5. When the printing finishes, turn off the printer.

6. Turn on the printer and then the hexadecimal model is off.

2-2-5 The self Test Mode

The self-test checks whether the printer has any problem. If the printer does not function properly, contact your dealer The self-test checks the following :

1. Make sure paper roll ahs been installed properly.

2. Turn on the power while holding down the FEED button. The self-test begins.

3. Tue self-test prints the current printer status, which provides the control ROM version and the DIP witch setting.

4. After printing the current printer status, self-test printing will print the following and pause (The PAPER LED light blinds).

Self-Test printing

Please press the Feed button

5. Press the FEED button to continue printing. The printer prints a pattern using the built-in character set.

6. The self-test automatically ends and cuts the paper after printing the following.

*** Completed ***

The printer is ready to receive data as soon as it completes the self-test.

Rev. 2.01

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SRP-350/352plusA&C

SRP-350plus VER.6.02 STD 2007.04.17 ================================

DIP SWITCH SW1/SW2 STATUS

DIP SW1 12345678 ON : ***

OFF : *****

DIP SW1 12345678 ON :

OFF : ********

MEMORY SWITCH STATUS MSW1 12345678 MSW2 12345678 (Codepage Selection) MSW8 12345678 (Reserved) MSW9 12345678 (Reserved) MSW10 12345678 (Special Function1) MSW11 12345678 (Special Function2)

Serial(RS-232C) Interface Baud Rate : 115200 bps Data bits : 8 bits

Parity Check : None Stop bit : 1 bit or more Handshaking : DTR/DSR

Buffer CAPACITY : 64K Byte

Handshaking (Busy condition) [Dip S/W 2-4] Offline or Receive buffer full

EPSON EMULATION MODE

Print Density LIGHT [ 1 2 3 4 ] DARK █

Self-test printing, please press the FEED button.

ASCII

!"#$%&'()*+,-./0123456789:;<=>?@ "#$%&'()*+,-./0123456789:;<=>?@A #$%&'()*+,-./0123456789:;<=>?@AB $%&'()*+,-./0123456789:;<=>?@ABC %&'()*+,-./0123456789:;<=>?@ABCD &'()*+,-./0123456789:;<=>?@ABCDE '()*+,-./0123456789:;<=>?@ABCDEF ()*+,-./0123456789:;<=>?@ABCDEFG )*+,-./0123456789:;<=>?@ABCDEFGH *+,-./0123456789:;<=>?@ABCDEFGHI +,-./0123456789:;<=>?@ABCDEFGHIJ ,-./0123456789:;<=>?@ABCDEFGHIJK

-./0123456789:;<=>?@ABCDEFGHIJKL ./0123456789:;<=>?@ABCDEFGHIJKLM /0123456789:;<=>?@ABCDEFGHIJKLMN 0123456789:;<=>?@ABCDEFGHIJKLMNO 123456789:;<=>?@ABCDEFGHIJKLMNOP 23456789:;<=>?@ABCDEFGHIJKLMNOPQ 3456789:;<=>?@ABCDEFGHIJKLMNOPQR 456789:;<=>?@ABCDEFGHIJKLMNOPQRS 56789:;<=>?@ABCDEFGHIJKLMNOPQRST 6789:;<=>?@ABCDEFGHIJKLMNOPQRSTU 789:;<=>?@ABCDEFGHIJKLMNOPQRSTUV 89:;<=>?@ABCDEFGHIJKLMNOPQRSTUVW 9:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWX

PC437

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Rev. 2.01

Figure 3-13 The Self-Test Sheet

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SRP-350/352plusA&C

2-2-6 Setting the Memory Switches

This printer has Memory Switch set which is software switches. Memory Switch set has MSW1, MSW2,MSW8, MSW9,MSW10,MSW11,Customize value. Memory Switch setting utility can change the Memory Switch set to ON or OFF as shown in the table below (default : all OFF) : Settings of the Memory Switch are stored in the NV memory : therefore, even if the printer is turned off, the settings are maintained.

※ Notes : The Memory Switch is available to be changed by three methods :

- Memory Switch setting utility.

- Control from ESC/POS command.

MSW1

Switch Function ON OFF

1~8 Reserved -- Fixed to OFF

MSW2

Switch Function ON OFF

1 Font Selection Font B (9x24) Font A (12x24) 2 Auto Cutter Function Full Cutting Partial Cutting

3~8 Code Page Selection Refer to following Table

MSW2-8 MSW2-7 MSW2-6 MSW2-5 MSW2-4 MSW2-3 Character Table

OFF OFF OFF OFF OFF OFF Page 0 437 OFF OFF OFF OFF ON OFF Page 1 Katakana OFF OFF OFF ON OFF OFF Page 2 850 (Multilingual) OFF OFF OFF ON ON OFF Page 3 860 (Portuguese) OFF OFF ON OFF OFF OFF Page 4 863 (Canadian-French) OFF OFF ON OFF ON OFF Page 5 865 (Nordic) OFF OFF ON ON OFF OFF Page 16 1252 (Latin I) OFF OFF ON ON ON OFF Page 17 866 (Cyrillic #2) OFF ON OFF OFF OFF OFF Page 18 852 (Latin 2) OFF ON OFF OFF ON OFF Page 19 858 (Euro) OFF ON OFF ON OFF OFF Page 21 862 (Hebrew DOS code) OFF ON OFF ON ON OFF Page 22 864 (Arabic) OFF ON ON OFF OFF OFF Page 23 Thai42 OFF ON ON OFF ON OFF Page 24 1253 (Greek) OFF ON ON ON OFF OFF Page 25 1254 (Turkish) OFF ON ON ON ON OFF Page 26 1257 (Baltic)

ON OFF OFF OFF OFF OFF Page 27 Farsi ON OFF OFF OFF ON OFF Page 28 1251 (Cyrillic) ON OFF OFF ON OFF OFF Page 29 737 (Greek) ON OFF OFF ON ON OFF Page 30 775 (Baltic) ON OFF ON OFF OFF OFF Page 31 Thai14 ON OFF ON OFF ON OFF Page 32 Hebrew Old code ON OFF ON ON OFF OFF Page 33 1255 ON OFF ON ON ON OFF Page 34 Thai11 ON ON OFF OFF OFF OFF Page 35 Thai18 ON ON OFF OFF ON OFF Page 36 855 (Cyrillic) ON ON OFF ON OFF OFF Page 37 857 (Turkish) ON ON OFF ON ON OFF Page 38 928 (Greek) ON ON ON OFF OFF OFF Page 39 Thai16 ON ON ON OFF ON OFF Page 40 1256 (Arabic)

(USA, Standard Europe)

(Hebrew New code)

Rev. 2.01

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SRP-350/352plusA&C

MSW8

Switch Function ON OFF

1~8 Reserved -- Fixed to OFF

MSW9

Switch Function ON OFF

1~8 Reserved -- Fixed to OFF

MSW10 (Special Function 1)

Switch Function ON OFF

1 External buzzer control

(This functions operate only after

cutting)

2~4 Reserved -- Fixed to OFF

5 Printing width 2 inch 3 inch 6 2 Color support Enable Disable

7~8 Reserved -- Fixed to OFF

MSW11 (Special Function 2)

Switch Function ON OFF

1~8 Reserved -- Fixed to OFF

External buzzer enable External buzzer disable

Rev. 2.01

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3. Product Specifications

3-1 Appearance

3-1-1 Printer Dimensions (mm)

SRP-350/352plusA&C

SRP-350plus

3-1-2 AC Adapter Dimensions (mm)

SRP-352plus

Figure 3-1 Printer Dimension

35mm

Rev. 2.01

115mm

65mm

Figure 3-2 Adapter Dimension

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SRP-350/352plusA&C

3-1-3 Feature Locations-SRP-350/352plusA/C TYPE

1. Cover-Open

2. Case-Upper

3. Case-Lower

4. Label-Control

5. Push Button

6. Cover-Cutter

7. Power Button

Rev. 2.01

8. Bracket Dip Switch 9a. Parallel interface(IEEE-1284) 9b. Serial interface(RS-232C) 9c. Ethernet interface(10BASE T) 9d. -

10. DC Power Jack

11. Drawer Kick-Out Connector

12. USB 2.0

Figure 3-3 Feature Location

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SRP-350/352plusA&C

3-2 General Specifications

Item Description Remark

• SRP-350/352plusCOS : RS-232 Serial Communication

Product

Processor

Memory

Interface Serial (RS-232C / RS-485)

Interface Parallel

USB

USB2.0

Printer

Auto Cutter

Power Consumption • Approx. 27W (Peak)

AC Adapter

Environment Condition Weight • 2.3 Kg (With Packing) Dimensions(mm) • 195(W) x 145(D) x 146(H)

• SRP-350/352plusCOP : IEEE1284 Parallel Communication

• SRP-350/352plusCO : USB Communication

• SRP-350/352plusCOE : Ethernet

• NEC UPD70F3107AGJ(32 Bit) Internal ROM Size : 256K Byte Internal RAM Size : 10240 Byte

• RAM SRAM : 4Mbits (K6R4008VID-JU0000) FLASH RAM : 16Mbits (M29W160EB-70N6)

• Flow Control :

1) DTR / DSR (H/W Flow Control)

2) XON / XOFF (S/W Flow Control)

• Baud Rate : 2400 /4800/ 9600/ 19200/ 38400

/57600/ 115200 Bps

• Receive Buffer : 64 Kbytes

• Connector : DB25P Female (I/F PBA Side)

• Mode :

1) Forward Mode : Compatibility Mode

2) Reverse Mode : Nibble / Byte Mode

• Connector : 36 Pin Centronics (Ribbon Type)

• Transfer Type : BULK

• Speed : 12 Mbps (Full-Speed)

• Power : Self-Powered

• Transfer Type : BULK

• Speed : 480 Mbps (High-Speed)

• Power : Self-Powered

• Printing Method : Thermal Line Printing

• Printing Speed

1) SRP-350plus : Mono 200mm/Sec, 47.28 Line/Sec

2Color 100mm/Sec, 23.6Line/sec

2) SRP-352plus : Mono 195mm/Sec, 52 Line/Sec

2Color 90mm/Sec, 24Line/sec

• Type : Guillotine

• Cutting Method : 1 Point Partial Cutting

• Input : AC 100V ~ 240V, 50Hz/60Hz

• Output : DC 24V±5%, 2.5A

• Input : AC 100V ~ 240V, 50Hz ~ 60Hz

• Output : DC24V±5%, 2.5A

Table 3-1 General Specification

Flash ROM Version

The Flow Control, Baud Rate, Stop Bit and Parity Are determined by DIP S/W position.

Rev. 2.01

- 18 -

SRP-350/352plusA&C

3-3 Thermal Printer Specifications

3-3-1 Printer Specification

1) 180dpi Item Description Remark

Model • SRP-350plusA/C(TPH : AG072-H7E817,AOI Electronoics) Print Method • Thermal Line Printing Dot Density • 0.141 mm (7.09 Dots/mm) Printing Direction • Unidirection with friction feed Printing Width • 72±0.2mm, 512 dot Position Character / Line • 42 (Font A : 12x24) • 56 (Font B : 9x24 ) Character Spacing • 0.28mm (0.01) (2 dots) (Font A)

• 0.28mm (0.01) (2 dots) (Font B)

Printing Speed • Mono Max. 200mm (47.28 Lines / Sec, 1/6inch feed)

• 2color Max. 100mm(23.6 Line/ Sec, 1/6inch feed)

• Ladder Barcode : Mono 200mm/sec, 2Color 100mm/sec

Paper feeding Speed • Approx. 200mm /Sec

Table 3-2 Thermal Printer Specification

2) 203 dpi Item Description Remark

Model • SRP-352plusA/C (TPH : AG072-H7E813 ,AOI Electronoics) Print Method • Thermal Line Printing Dot Density • 0.125 mm (8 Dots/mm) Printing Direction • Unidirection with friction feed Printing Width • 72±0.2mm, 576 dot Position Character / Line • 48 (Font A : 12x24) • 64 (Font B : 9x24 ) Character Spacing • 0.25mm (0.01) (2 dots) (Font A)

• 0.25mm (0.01) (2 dots) (Font B)

Printing Speed • Mono Max. 195mm (52 Lines / Sec, 1/6inch feed)

• 2color Max. 90mm(24 Line/ Sec, 1/6inch feed)

• Ladder Barcode : Mono 180mm/sec, 2Color 90mm/sec

Paper feeding Speed • Approx. 200mm /Sec

Table 3-3 Thermal Printer Specification

3-3-2 Character Specification

Item Description Remark

• Alphanumeric Characters : 95

Number of Character

Character Structure

• Extended Characters : 128 x 34 Page (Including one space page)

• International Characters : 32

• 12 x 24 (Font A) (Including 2-dot spacing in horizontal)

• 9 x 24 (Font B) (Including 2-dot spacing in horizontal) Font A is selected as the default

Table 3-4 Thermal Printer Character Specification

Rev. 2.01

- 19 -

SRP-350/352plusA&C

3-3-3 Paper Specification

Item Description Remark

Paper Type • Mono :TF50KS-E(Nippon paper)

• 2Color : PB-70(Mitsubishi) Paper Form • Paper Roll Paper Width • 80mm(+0,-0.5) Paper Roll Size • Max 83mm(3.26”) Spool Inside Dia. • 12mm (0.47) Spool Outside Dia. • 18mm (0.71)

Table 3-5 Thermal Printer Paper Specification

※ Note

* Mono : The Following paper can be used instead of the specified paper above.

TF50KS-E(Paper thickness : 65μm) : Nippon Paper industries Co., Ltd.

PD 160R ( “ : 75μm) : New Oji Paper Mfg, Co., Ltd.

P350 ( “ : 62μm) : Kansaki Specialty Paper, Inc. (USA)

* 2Color: PB-670 ( “ : 75μm) : Mitsubishi

PD750R ( “ : 75μm) : Oji paper Mfg. Co.,Ltd.

3-3-4 Reliability and Environment Specification

Item Description Remark

Life • Mechanism : Monochrome : 20,000,000 Lines

2Color : 10,000,000 Lines

The reliability values above are assumed When a 15-Line feed

and a 10-Line print repeat alternately

• Head : 1x10

• Auto Cutter : 1,800,000 Cut, 700,000 cut(In case of KF50) MCBF • Monochrome :70,000,000Lines, 2Color:35,000,000Lines Environmental Temperature Humidity • 10% ~ 90% RH

• Operating : 0°C ~ +45°C

• Storage : -10°C ~ +50°C (Except for Paper)

Table 3-6 Thermal Printer Reliability Specification

Pulses, Monochrome : 150Km, 2Color : 75Km

Rev. 2.01

- 20 -

SRP-350/352plusA&C

3-3-5 Printable Area

d c e

Figure 3-4 Printable Area

1) 180dpi Item Description Remark

a b c d e

Dots

Font 9X24

Font 12X24

80±0.5mm(3.15 ±0.0197)

0.141 (0.0056 )

72±0.2mm(2.83 ±0.0079)

2.75mm~4.25mm

2.75mm~4.25mm 512

56 Character 42 Character

* ‘d’ & ‘e’ position can be shifted while printing according to the paper position.

2) 203dpi Item Description Remark

a b c d e

Dots

Font 9X24

Font 12X24

80±0.5mm(3.15 ±0.0197)

0.125 (0.0049 )

72mm±0.2mm (2.83±0.0079)

2.75mm~4.25mm

2.75mm~4.25mm 576

64 Character 48 Character

* ‘d’ & ‘e’ position can be shifted while printing according to the paper position.

3-3-6 TPH (Thermal Printer Head) Specification

1) 180dpi Item Description Remark

Heat Element Structure 2 Heaters / Dot Number of Heat Element 512 Dots Heat Element Pitch 0.141mm/dot, 7.09Dot/mm (180DPI) Print Width 72±0.2mm Average Resistance 800Ω ± 3% Thermister

1) Resistance R25 : 30kΩ ± 5% (At 25℃)

2) B Value : 3950K ± 2%

3) Temperature : - 40℃ ~ +125℃ Table 3-7 TPH Specification

Rev. 2.01

- 21 -

SRP-350/352plusA&C

Item Maximum Unit Conditions Print Cycle (S.L.T.) 0.71 ml/Line Supply Energy 0.44 mJ/Dot Supply Voltage 26.4 V Vp < 28.0V (Vp : Peak of VH) Substrate Temperature 70 Number of heating dots at same time 256 Dots Logic Supply Voltage (Vdd) 5.25 V Include Peak Voltage of Vdd Logic input Voltage (Vin) -0.5 ~ Vdd+0.5 V

Table 3-8 TPH Maximum Condition (At 25℃)

2) 203dpi Item Description Remark

Heat Element Structure 2 Heaters / Dot Number of Heat Element 576 Dots Heat Element Pitch 0.125mm/dot, 8Dot/mm (203DPI) Print Width 72±0.2mm Average Resistance 800Ω ± 3% Thermister

Item Maximum Unit Conditions Print Cycle (S.L.T.) 0.63 ml/Line Supply Energy 0.34 mJ/Dot Supply Voltage 26.4 V Vp < 28.0V (Vp : Peak of VH) Substrate Temperature 70 Number of heating dots at same time 320 Dots Logic Supply Voltage (Vdd) 5.25 V Include Peak Voltage of Vdd Logic input Voltage (Vin) -0.5 ~ Vdd+0.5 V

3-3-7 Other Component Specification

Item Description Remark

Auto Cutter

Paper Feed Motor

Paper End Sensor • Reflection Type Photo Sensor Paper Roll Near End Sensor • Reflection Type Photo Sensor

1) Resistance R25 : 30kΩ ± 5% (At 25℃)

2) B Value : 3950K ± 2%

3) Temperature : - 40℃ ~ +125℃ Table 3-9 TPH Specification

Table 3-10 TPH Maximum Condition (At 25℃)

• Model : ORC-RUY80 (OHYANE RIKI MFG, Co., Ltd)

• Type : Guillotine Type

• Motor : DC Brush Motor FK-180SH-12280 (Mabuchi Motor)

• Voltage : 24V DC ± 7 %

• Current : 800mA (Average), 1.6A(Peak)

• Model : 14PU-M046-G1VM (Minebea)

• Type : 2-Phase, Bi-Polar chopper dual,3.75 Step angle

• Voltage : 24V ± 10% DC

• Drive Current : 0.7A [PHASE]

• Resistance : 4.2±0.42 (Ω/Phase)

• Inductance : 3.0 REF. (mH/Phase)

Table 3-11 Other Component Specification

℃

Thermister Temperature

Ts ub=2 5℃

Rev. 2.01

- 22 -

SRP-350/352plusA&C

3-4 SMPS Specifications

3-4-1 SMPS (Switching Mode Power Supply) Specification

Item Description Remark

• Typical : 100V ~ 240V AC

Input Voltage

Input Current • Max : 1.5A (When 120V), 0.75A (When 230V) In rush Current • Max : 40A (Peak to Peak) Line Regulation • +24V 1% Load Regulation • +24V 5% Ripple Noise • Peak 300mV O.C.P (Over Current Protect) S.C.P (Shot Current Protect)

3-4-2 SMPS Output Connector

Pin Number Signal Name

1 +24 VDC 2 GND 3 N.C

Shield Frame GND

Table 3-13 Power Connector Pin Description

• Min : 90V AC

• Max : 264V ac

• 3.0A ~ 8.0A

• Fold-Back Method

Table 3-12 Power Adapter (SMPS) Specification

Figure 3-5 Power Connector

Rev. 2.01

- 23 -

SRP-350/352plusA&C

3-5 Interface Specifications

3-5-1 RS-232C Serial Interface

3-5-1(a) Specification

Item Description Remark Data Transmission • Serial Synchronization • Asynchronous HandShaking (Flow Control)

Signal Level

Baud Rate • 2400/4800/9600/19200/38400/57600/115200 Bps Data Word Length • 8 bit Parity • None Connector • DB25P Female (I/F PBA)

※ Note : The HandShaking (Flow Control) / Data Word Length / Baud Rate / Parity functions depend

on the DIP Switch settings. Refer to the Operation Manual.

3-5-1(b) RS-232C I/F Cable

• H/W : DTR/DSR

• S/W : XON/XOFF

• Logic1 (MARK) : -3V ~ -15V

• Logic0 (SPACE) : +3V ~ +15V

Table 3-14 RS-232C Specification

XON : ASC Code 11h

XOFF:ASC Code 13h

Printer Side: D-SUB25P-Male Ferrite Core : 1 Turn (OP-118E : 18.2 x 12.5 x 25.5)

Figure 3-6 RS-232C Cable

Rev. 2.01

CONN : User Spec In Case PC : D-SUB25P-Female or

D-SUB9P-Female

- 24 -

3-5-1(c) Cable Connection

SRP-350/352plusA&C

(S.G) 1

(TXD) 2 (RXD) 3

Printer Side(25P)

(DSR) 6

(DTR) 20

(S.G) 7

Figure 3-7 RS-232C Cable Connection

3-5-1(d) Signal Description

Pin No. Signal Name Signal Direction Function

BODY Frame GND - Frame Ground

2 TXD Output Transmit Data 3 RXD Input Receive Data

This signal indicates whether the host computer can receive data. (H/W flow control)

1) MARK(Logic1) : The host can receive a data.

2) SPACE(Logic0) : The host can not receive a data.

6 DSR Input

7 Signal GND - Signal Ground

20 DTR Output

Table 3-15 RS-232C Pin Description

3) The printer transmits a data to the host, after confirming this signal.

4) When XON/XOFF flow control is selected, the printer

does

not check this signal.

This signal indicates whether the printer is busy. (H/W flow control)

1) MARK(Logic1) : The printer is busy.

2) SPACE(Logic0) : The printer is not busy.

3) The host transmits a data to the printer, after confirming

this signal.

4) When XON/XOFF flow control is selected, the host does

not check this signal.

1 (S.G)

2 (TXD) 3 (RXD)

Host Side(25P)

6 (DSR) 20 (DTR)

7 (S.G)

Rev. 2.01

- 25 -

SRP-350/352plusA&C

3-5-1(e) H/W Flow Control

When DTR/DSR flow control is select, before transmitting a data, the Printer checks whether the host is BUSY or not. If the host is BUSY, the Printer does not transmit a data to the host. If the host is not BUSY, the Printer transmits a data to the Host. The host is the same. Refer to the Interface Part of Chapter 7 (Special Circuit Diagrams).

3-5-1(f) S/W Flow Control

When XON/XOFF flow control is selected, the printer transmits XON(ACSII 11h) or XOFF(ASCII 13h) signal through the TXD line. If the Printer is BUSY, the Printer transmits XOFF(ASCII 13h) to host through the TXD line. Then the host recognize that the Printer is BUSY. So, the host does not transmit a data to the Printer. If the Printer is released from BUSY, the Printer transmits XON(ASCII 11h) to host through the TXD line. Then the host recognize that the Printer is not BUSY. And the host transmit a data to the Printer.

※ Note : Refer to the Operation Manual about XON/XOFF flow control.

3-5-2 IEEE1284 Parallel Interface

Bidirectional parallel interface : in accordance with the IEEE1284 Nibble/Byte mode.

2-5-2(a) Forward Mode Specification (Compatibility mode)

Data transmission from host computer to printer : Centronics compatible

Item Description Remark Data Transmission • 8-bit Parallel Synchronization • External supplied nStrobe signals HandShaking • nACK and Busy signals Signal Level • TTL compatible Connector • Centronics 36P

Table 3-16 IEEE1284 Specification

3-5-2(b) Reverse Mode Specification (Nibble / Byte mode)

Data transmission from the printer to the host computer. The STATUS data transmission from the printer to the host computer is accomplished in the Nibble or Byte mode. This mode allows data transmission from the asynchronous printer under the control of the host computer. Data transmission in the Nibble mode are made via the existing control lines in units of for bits (Nibble). In the Byte mode, data transmission in accomplished by making the 8-bit data lines bidirectional. Neither mode can operate at the same time as the compatibility mode, so switching is always required.

Rev. 2.01

- 26 -

SRP-350/352plusA&C

3-5-2(c) Signal Specification (Compatibility/Nibble/Byte mode)

Pin No. Source Compatibility Mode Nibble Mode Byte Mode

1 Host nStrobe HostClk HostClk 2 Host / Printer Data 0 (LSB) - Data 0 (LSB) 3 Host / Printer Data 1 - Data 1 4 Host / Printer Data 2 - Data 2 5 Host / Printer Data 3 - Data 3 6 Host / Printer Data 4 - Data 4 7 Host / Printer Data 5 - Data 5 8 Host / Printer Data 6 - Data 6

9 Host / Printer Data 7 (MSB) - Data 7 (MSB) 10 Printer nAck PtrClk PtrClk 11 Printer Busy PtrBusy/Data3,7 PtrBusy 12 Printer Perror AckDataReq /Data2,6 AckDataReq 13 Printer Select Xflag/Data1,5 Xflag 14 Host nAutoFeed HostBusy HostBusy 15 NC ND ND 16 GND GND GND 17 FG FG FG 18 Printer Logic-H Logic-H Logic-H

19~30 GND GND GND

31 Host nlnit nInit nlnit 32 Printer nFault nDataAvail /Data0,4 nDataAvail 33 GND ND ND 34 Printer DK_Status ND ND 35 Printer +5V ND ND 36 Host nSelectln 1284-Active 1284-Active

Table 3-17 IEEE1284 Pin Description

3-5-2(c) IEEE1284 I/F Cable

Rev. 2.01

Host Side

Printer Centronics

Side 36P

Figure 3-8 IEEE1284 Cable

- 27 -

SRP-350/352plusA&C

3-5-3 USB2.0 Interface

SRP-350plus support the USB (Universal Serial Bus) Serial Communication.

3-5-3(a) Specification

Item Description Remark

Transfer Type • BULK

Data Signal

Data Format

Transceiver

Speed • 12 Mbps Power • Self-Powered

Cable & Connector

Other • Support USB SPEC V1.1

3-5-3(b) Signal Description

Pin No. Signal Name Assignment(Color) Function

Shell Shield Drain Wire Frame Ground

1 VBUS Red Host Power : DC5[V] / 500[mA] 2 D- White Differential Data Line 3 D+ Green Differential Data Line 4 GND Black Signal Ground

3-5-3(c) Cable

USB cable consists of four conductors, two power conductors, and two signal conductors. High-/full-speed cable consists of a signaling twisted pair, VBUS, GND, and an overall shield. High-/full speed cable must be marked to indicate suitability for USB usage. High-/full-speed cable may be used with either low-speed, full-speed, or high-speed devices. When high-/full-speed cable used with low-speed devices, the cable must meet all low-speed requirements. Low-speed recommends, but does not require the use of a cable with twisted signaling conductors.

• Bi-direction, Half-Duplex

• Differential Signal Pair (D+ / D-)

• NRZI Format

• Zero Bit Stuffing after 6 ones

• Differential Receive Sensitivity : 200[mV]

• Differential common Mode Range : 0.8 ~ 2.5[V]

• Single-End Receiver Threshold : 0.8 ~ 2.0[V]

• Cable : 5m / 2m

• Connector : B Type

Table 3-18 USB Specification

Table 3-19 USB Pin Description

Rev. 2.01

- 28 -

SRP-350/352plusA&C

Figure 3-9 USB Cable

3-5-4(d) Construction

Raw materials used in the fabrication of this cable must be of such quality that the fabricated cable is capable of meeting or exceeding the mechanical and electrical performance criteria of the most current USB Specification revision and all applicable domestic and international safety/testing agency requirements; e.g., UL, CSA, BSA, NEC, etc., for electronic signaling and power distribution cables in its category.

American Wire

Gauge (AWG)

Nominal Conductor

Outer Diameter

0.381 mm (0.015)

0.406 mm (0.016)

0.483 mm (0.019)

0.508 mm (0.020)

0.610 mm (0.024)

0.762 mm (0.030)

0.787 mm (0.031)

0.890 mm (0.035)

0.931 mm (0.037)

Table 3-20 Power Pair

Stranded Tinned

Conductors

7 x 36

19 x 40

7 x 34

19 x 38

7 x 32

19 x 36

7 x 30

19 x 34

7 x 28

19 x 32

Rev. 2.01

- 29 -

SRP-350/352plusA&C

※ Note: Minimum conductor construction must be stranded tinned copper.

To minimize end user termination problems, USB uses a keyed connector protocol. The physical difference

in the Series A and B connectors insures proper end user connectivity. The A connector is the principle

means of connecting USB devices directly to a host or to the downstream port of a hub. All USB devices

must have the standard Series A connector specified in this chapter. The B connector allows device vendors

to provide a standard detachable cable. This facilitates end user cable replacement.

Figure 2-10 illustrates the keyed connector protocol.

Series A Connectors

Series B Connectors

◆Series A plugs are

always oriented upstream towards the Host System

A Plugs (From the USB Device)

A Receptacles (Downstream Output from the USB Host orHub)

Figure 3-10 Keyed Connector Protocol

The following list explains how the plugs and receptacles can be mated:

◆Series B plugs are

always oriented downstream towards the USB Device

B Receptacles (Upstream Input to the USB Device or Hub)

B Plugs (From the Host System)

• Series “A” receptacle mates with a Series “A” plug. Electrically, Series “A” receptacles function as outputs

from host systems and/or hubs.

• Series “A” plug mates with a Series “A” receptacle. The Series “A” plug always is oriented towards the host

system.

• Series “B” receptacle mates with a Series “B” plug (male). Electrically, Series “B” receptacles function as

inputs to hubs or devices.

• Series “B” plug mates with a Series “B” receptacle. The Series “B” plug is always oriented towards the USB

hub or device.

Rev. 2.01

- 30 -

3-6 Cash Drawer Specifications

3-6-1 Drawer Cable

Ferrite Core : 1 turn (OP-18E : 18.2 x 12.5 x 25.5)

Figure 3-11 Drawer Cable

3-6-2 Cable Connection

Pin No. Description Direction

1 Frame GND 2 Drawer Kick-Out Driver Signal #1 Output 3 Drawer Open / Close Signal Input 4 +24V 5 Drawer Kick-Out Driver Signal #2 Output 6 Signal GND -

Table 3-21 Drawer Cable Connection

※ Note : +24V is always output through pin 4 during power on.

SRP-350/352plusA&C

Rev. 2.01

- 31 -

4. Hardware

4-1 Wiring Diagram

SRP-350/352plusA&C

PAPER

NEAR

END

SENSOR

PANNEL

PBA

3 12

CN12

6 5 4 3 2 1

INTERFACE PBA

14 12 10 8 6 4 2

17 15 13 11 9 7 5 3 1

33 31 29 27 25 23 21 19

34 32 30 28 26 24 22 20 18

CN4

CN11

U S B

1 2 3 4

MAIN PBA (TOP VIEW)

CASH

DRAWER

2 4 6

3 51

CN9

POWER

ADAPTER

1 2

CN2

CN1

1 2

POWER

SWITCH

PAPER

END

SENSOR

3 2

CN13

CN8

3 1

17 15 13 11 9 721 19

14 12 10 820 18

4 2

THERMAL PRINTER HEAD

Pin Assignment: Refer to the Schematic Diagram

[Figure 4-1 Board Wiring Diagram]

CN7

3 14 2

AUTO

CUTTER

CN6

1 2 3 4

FEED

MOTOR

Rev. 2.01

- 32 -

4-2 Block Diagram

SRP-350/352plusA&C

POWER

ADAPTER

+24VDC

POWER SUPPLY

CIRCUIT

FLACH

M29W160EB

SRAM

K6R4008V1D

VPP(+24V) VTH(+24V)

+3.3V

VCC(+5V)

RESET

CIRCUIT

+2.5V

ADDRESS

DATA

ADDRESS

DATA

MCU

uPD70F3170

RS-232

DRIVER

IEEE-1284

DRIVER

ETHERNET

DRIVER

USB2.0

DRIVER

SENSOR

CIRCUIT

DRIVER

SWITCH

RS-232

CON.

IEEE-1284

CON.

ETHERNET

CON

USB

CON.

P_END &

NEAR

SENSOR

AUTO

CUTTER

A_CUT

SWITCH

BUZZER

DIP

SWITCH

DRAWER

COMPULSORY

BUZZER CIRCUIT

DIP SWITCH CIRCUIT

SWITCH

DRIVER

CLOCK

5MHz

[Figure 4-2 Block Diagram]

MOTOR DRIVER

THERMAL

HEAD

PAPER

FEED

MOTOR

LED

FEED

BOTTON

Rev. 2.01

- 33 -

SRP-350/352plusA&C

4-3 Special Circuit Descriptions

4-3-1 Power Circuit

This system is operated under 100Vac or 240Vac. The power circuit supplies the three differential DC voltage sources.

[Figure 4-3 Power Block Diagram]

No. VOLTAGE DESCRIPTION

1 VPP(+24VDC) Cash Drawer Solenoid Driving / Step Motor Voltage 2 VTH(+24VDC) Thermal Printer Head (TPH) Voltage 3 Vdw(+7.8VDC) CPU Download Voltage 4 Vcc(+5VDC) Logic, Sensor Voltage 5 Vdd(+3.3VDC) CPU, Flesh, SRAM, Reset Voltage 6 Vdd(+2.5VDC) USB core Voltage

1) Drawer Driving and Feed, Auto Cutter Motor Voltage, TPH Driving Voltage : +24VDC

+24VDC is supplied from SMPS. This Voltage is smoothed by capacitors (CL1). This voltage is used as a Cash Drawer Solenoid Driving voltage, Step motor driving voltage and a source voltage of the other voltage sources and TPH Driving Voltage.

2) Voltage : +7.8V (CPU Download Voltage)

Change the input 24V to 7.8V by a regulation. U1(LM2575S-ADJ)

3) Logic IC Driving Voltage: +5V

Change the input 7.8V to 5V by a regulation. U2(BA17805-E2)

4) CPU, Flesh, SRAM, Reset Voltage: +3.3V

Change the input 7.8V to 3.3V by a regulation. U3(BA033FP-E2)

5) USB core Voltage: +2.5V

Change the input 5V to 2.5V by a regulation. U202(BH25FB1WHFV)

Rev. 2.01

- 34 -

SRP-350/352plusA&C

4-3-2 RESET Circuit

Reset signal is signal in order to start-up CPU under Power-on. Reset circuit uses a reset ASM811REUSF-T(U8). When 3.3Vdc is fallen under 2.7Vdc by Power-off, reset signal prohibits the system from miss-operating by lowering down to 0V.

ASM811

REUSF-T

[Figure 4-4 Reset Block Diagram]

[Figure 4-5 Reset Waveform]

Rev. 2.01

- 35 -

SRP-350/352plusA&C

4-3-3 Buzzer and Cash Drawer Circuits

1) Buzzer Driving Circuit

The Buzzer is used to inform several kinds of states which occur under system operating and gives some information to users by controlling the P86 of CPU (UPD70F3107)

[Figure 4-6 Buzzer Block Diagram]

2) Cash Drawer Driving Circuit

The circuit is used for opening cash drawer and driven by the Q10, Q11(2SD2170). When its state is high level signal, Q10 or Q11 (2SD2170) drive the solenoid to open the cash drawer. As an optional item, we provide sensor switch (we call it a compulsory switch) which checks the drawer whether it is opened or not. This sensor switch turns on for the drawer open condition, and turns off for the other.

※ Caution : Make sure that the Cash Drawer solenoid resistance is more than 20Ω.

Rev. 2.01

[Figure 4-7 Cash Drawer Block Diagram]

- 36 -

SRP-350/352plusA&C

4-3-4 I/F PBA Detect Block Diagram

When the printer is ON, the printer checks what kind of the I/F PBA is installed. After detection, the CPU specify the I/O port properly. The following is the method of I/F PBA detection. The I/F PBA has the three return Signal (MD0~2). The CPU recognize the I/F PBA by the value of the three return signal.

I/F PBA MD0 MD1 MD2

RS-232C L L H

IEEE1284 H H H

USB2.0 H L H

ETHERNET L H L

No Connection L L L

4-3-5 RS-232C Communication Block Diagram

The CPU is used for serial communication. And also RS-232C Driver (MAX232), is used to serial communication. Show following block diagram.

TXD,DTR

UPD70F3107

RXD,DSR

[Figure 4-8 RS-232C Communication Block Diagram]

Rev. 2.01

[Figure 4-9 RS-232C Communication Waveform]

- 37 -

SRP-350/352plusA&C

4-3-6 Parallel Communication Block Diagram

The printer support the bidirectional Parallel Interface with Centronics, Nibble, Byte Mode. The Centronics is Forward and the Nibble, Byte are reverse Mode.

[Figure 4-10 IEEE1284 Communication Block Diagram]

4-3-7 USB Communication Block Diagram

The printer support the USB (Universal Serial Bus). The transfer type of the printer is the BULK.

Rev. 2.01

[Figure 4-11 USB2.0 Communication Block Diagram]

- 38 -

SRP-350/352plusA&C

4-3-8 DIP Switch Circuit

The key board circuit consist of the scan signal of 3 lines and the return signal of 2-line. The CPU sends repeatedly and continuously the scan data DIP_A~DIP. The DIP S/W information input in the return signal if the specific DIP S/W is ON status during the given time. The CPU reads the data through DIP IN1~IN2 and analyzes what DIP S/W is ON and performs the selected function.

SW1

1 2 3 4 5 6 7 8

218-008LPS

+3.3V +3.3V

678

RA9

10K 1/16W

109 1211 1413 1615

4 5

123

4 5

RA10

10K 1/16W

123

VCC

STROBE

GND

+3.3V

678

+3. 3V

BP47 100nF

U14 74HC151/ SOIC

BP48 100nF

R62 100F R63 100F R64 100F

DIP_A DIP_B DIP_C

DIP_IN1

CPU

uPD70F3107

SW2

1 2 3 4 5 6 7 8

218-008LPS

RA11

10K 1/16W

109 1211 1413 1615

123

4 5

RA12

10K 1/16W

4 5

4 3 2

1 15 14 13 12

D0 D1 D2 D3 D4 D5 D6 D7

U15 74HC151/ SOIC

VCC

STROBE

GND

A B

11 10 9

5 6

DIP_IN2

DIP_A

DIP_B

DIP_C

DIP1 DIP2 DIP3 DIP4 DIP5 DIP6 DIP7 DIP8

[Figure 4-12 USB Communication Block Diagram]

Rev. 2.01

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SRP-350/352plusA&C

4-3-9 Thermal Printer Head Circuit

First, the CPU sends a Serial Clock and Serial Data 256Bits(32Bytes) to the Shift Register of the Thermal Printer. The Serial Data are stored to each Shift Register in the Thermal Printer. Because the Data#1 Pin and the Data#2 pin are shorted on Main PCB, the Data(256Bits) are stored in both Shift Register#1 and #2. Second, the CPU send a Latch Signal to the Thermal Printer. Then, the Data of both Shift Register#1 and #2 (256*2=512 Bits) are moved to the Latch Register. After that, the CPU sends a Strobe Signal to the Thermal Printer. Then, the Printer outputs the Serial Data. Each Strobe Signal manages the Printer Dot.

STB No. DOT No. DOTs/STB SRP-350plus Strobe Processing

STB1 1 ~ 256 256 STB2 257 ~ 512 256

The content of data is same.

CLK

DATA#1,2

/LATCH

STROBE1

STROBE2

[Figure 4-13 Thermal Printer Block Diagram]

256 CLK

256bits 256bits 256bits

Printing (1~256 ) Printing( 1~256 )

Printing( 257~512)

[Figure 4-14 Thermal Printer Timing Waveform]

Rev. 2.01

- 40 -

5. Disassembly and Assembly

5-1 Case lower block

Scrw (3x8)

Brkt Dip Switch

SRP-350/352plusA&C

1.Remove the three screw.

2.Sparate the BRKT Dip switch, Case lower, Foot-Rubber from the Printer.

Foot Rubber

Case Lower

1.Remove the connector wires

from main PBA and sub Assembly.

Rev. 2.01

- 41 -

SRP-350/352plusA&C

Screw

Main PCB

Screw (3x6)

Screw

Screw (3x6)

Brkt PCB

Screw

Brkt Serial

(Parallel, 485)

PCB Serial

(Parallel, 485)

1.Remove the Screws form the BRKT PBA.

2.Separate the BRKT Interface.

3.Remove the two screws.

4.Separate the BRKT Interface from

the I/F PBA Assembly.

5.Separate the I/F PBA from the Main PBA.

6.Remove the four screws.

7.Seperate the Main PBA form the BRKT PCB.

Case Lower

1.Separate the Cover cable from Case lower.

Cover Cabel

Rev. 2.01

- 42 -

5-2 Case Upper block

SRP-350/352plusA&C

1.Push the button to open the Cove Open.

2.Remove the four screws.

3.Separate the Cover open.

4.Separate the Cover cutter.

5.Remove the screws.

1.Remove the two screws.

2.Lift the Case upper in the direction

of an arrow during pushing the

Push button.

3.Remove the three screws.

4.Separate the Manual cutter from the Case upper.

Rev. 2.01

- 43 -

SRP-350/352plusA&C

1.Remove the E-Ring.

2.Separate the Spring tension, the

Shaft hinge and the E-Ring.

3.Remove the E-Ring.

4.Separate the Bushing and the

Roller Platen Assembly.

Spring Hook

1.Remove the Spring Hook, two screws.

2.Separate the BRKT Hook.

Brkt-Hook

Screw (3x4.4)

Rev. 2.01

- 44 -

SRP-350/352plusA&C

Cover Plate

Screw (3x4)

Fixed Cutter

1.Remove the three screws.

2.Separate the Fixed-cutter from

the Cover Housing.

3.Remove the two screws.

4.Separate the Cutter Blade from

Fixed-cutter.

Cutter Blade

Cover Housing

Screw (3x4)

5.Remove the two screws.

6.Separate the Cover plate from the

Cover housing.

Screw (3x6)

5-3 Frame block

1.Remove the two screws.

2.Separate the Black Auto cutter

from the Frame main.

Rev. 2.01

- 45 -

SRP-350/352plusA&C

1.Remove the screw.

2.Push the Heat-sink Assembly in

the direction of an arrow and Separate it.

Screw

Heatsink Assy

Brkt TPH Rear

Heat Sink

Plate ground

1.Remove the screw.

2.Separate the Plate-ground and

BRKT TPH Rear.

3.Remover the two screws.

4.Separate the Heat-sink and the

Spring TPH.

5.Separate the Connector from the Heat-sink.

Spring TPH

Screw (3x4)

Connector

Rev. 2.01

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SRP-350/352plusA&C

Screw (3x8)

1.Remove the two screws.

2.Separate the Frame Main from the

Frame Main

BRKT PCB.

3.Separate the Power Switch from

the BRKT PCB.

Brkt PCB

Power Switch

Screw (3x8)

Cover Sensor PCB

Guide Button

Frame Main

Plate-Spring

Screw (3x8)

Lever Release

Washer

Slip

Control Board

Screw (3x8)

Spring Release

Button Assy

1.Remove the screw, And separate the

Control board from the Frame Main.

2.Remover the Washer slip.

3.Separate the Lever Release from

the Frame Main.

4.Remove the two screws.

5.Separate the Button Assembly from

the Frame Main.

6.Push the Button. Then, the Button

Assembly is separate.

(Internal Spring Release, Guide Button)

7.Remover the screw. And separated

the Cover Sensor PCB from the

Frame Main.

8.Remover the screw. And separate

the Plate-Spring from the Frame-

Rev. 2.01

Screw (3x8)

Push Button

- 47 -

Main.

SRP-350/352plusA&C

6. Adjustments and Maintenance

6-1 Adjustment

6-1-1 Remaining Roll Paper Adjustment

This sensor is set to the step3 position at the factory. If you find that there is not or too enough paper

remaining on the roll when the near-end sensor is triggered, you can change the setting to the upper or

Lower position as described below.

Note : The factory setting is based on a paper roll core with an outside diameter of 18mm. If you use

a paper roll with a core with an outside diameter of more than 18mm, it is better to change to

the upper position(Rotate the tab at front side) as described below.

1. Open the paper roll cover.

2. Rotate the tab at front or rear Position.

Near end sensor tab

Rev. 2.01

- 48 -

SRP-350/352plusA&C

6-1-2 Paper Jam

If the paper jam occur, the Buzzer will beep. If the cover-open can be opened, open the Cover-open and remove the paper. If the Cover-open can not be opened, Follow the below.

1. Turn the printer on to make the cutter initialized, and then open the cover-open.

2. In case that the cutter is not initialized, remove the cover-cutter then remove the paper jam with turning the knob to the arrow direction as shown below picture. You may use a cross

screwdriver to remove the paper jam.

3. After the cutter placed back, and then press the push button to open the cover.

4. Assemble the cover-cutter.

Rev. 2.01

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SRP-350/352plusA&C

6-2 Maintenance

Paper dust in the heating elements may lower the print quality. In this case, clean the print head as follow;

※ Caution: Turn off the printer power before cleaning. ※ Caution: Note that the thermal head (Thermal element and Radiation plate) becomes very hot

during normal operation, creating the danger of burn injury. Be sure to wait for about 10 minutes after turning printer power off before beginning the cleaning.

1. Open the cover-open.

2. Clean the thermal element (the area that looks like it is marked a thin black line) of the thermal head with a cotton swab moistened with an alcohol solvent. (ethanol, methanol, or IPA)

3. After confirming that the alcohol solvent has been dried up completely, close the cover open.

Radiation plate

Head tip

Spring pin

Print circuit board

Connector

Base

※ Note: Never touch the thermal element with your hand.

Doing so can damage the thermal element.

※ Note: Do not scratch the printer head.

Heat sensitive

layer

Protective layer

Electrode

Resistor

Board

Rev. 2.01

- 50 -

SRP-350/352plusA&C

(

(+5V) O

(

(+3.3V) O

7. Troubleshooting

This chapter describes the methods for troubleshooting in this Receipt Printer.

7-1 Power Problem

Power

Problem

Power Out

k? On SMPS

Power VDR

+24V) Ok?

Power VTPH

+24V) Ok?

Power

+7.8V) Ok?

Power VCC

1. Check the Input/Output Power Cable

2. Replace the Adapter(SMPS)

1. Check the Harness of Power S/W