Toshiba B-SV4T Manual 

Text of Toshiba B-SV4T User Guide:

• Toshiba B-SV4T, 2-10 2.4 Memory Circuit Fig. 7 Memory Circuit Diagram There are 2MB DRAM and 2MB flash ROM built on main PCB ass’y. It uses U6&U7 type 1M Byte Flash ROM and U8 type 2M Byte DRAM. MCU R/W pin becomes high when reading Flash ROM or DRAM, and becomes low when writing. JP6 is memory module connector, which can expand to 8MB.

• Toshiba B-SV4T, 3-10 3.7 Replacing the Feed Gap Sensor Ass’y and Label Guide 1. Please refer to 3.1 for disassembling the lower cover ass’y and lower inner cover. 2. Disconnect all harnesses from the main PCB ass’y . 3. Turn the lower inner cover upside down. 4. Screws off 4 screws and remove the plastic laminate. 5. Screws off 2 screws from a Label Guide Rack Fixing Plate and 2 from a gap sensor PCB then remove the feed gap sensor ass’y. Screws Screws Screw Screw Feed Gap Sensor Ass’ y Plastic Laminate Lower Inner Cove r Label Guide Rack Fixing Plate Screw

• Toshiba B-SV4T, 2-19 2.11 Serial Interface Circuit Fig. 13 Serial Interface Circuit Diagram RS-232 is an asynchronous transfer interface, which used with externally connected personal computer and keyboard unit. JP15 connects to PC serial interface through the RS-232 cable. RxD is a data receive pin of MCU. CTS is clear to send of MCU, which sends a signal from the external device. TxD is a data output pin of MCU. RTS is the request to send signal, which sends signal to the external device.

• 4-3 4.2 Install the Strip Module (Option: B-SV404-H-QM-R) 1. Open the top cover ass’y. 2. Remove two screws for hinge support and one screw for memory module cover in lower cover ass’y. 3. Remove 6 screws on the lower inner cover. 4. Hold the lower cover ass’y and lift up the top cover open levers to separate the lower inner cover and the lower cover ass’y.

• Toshiba B-SV4T, 2-15 Table 1 Stepping Motor Pattern Step Pin on JP12 1 2 3 4 Phase 1 on on on A 2 on on /A 3 on on on /B 4 on on B Table 2 Stepping motor power pattern Motor Current Current percentage I0 I1 High Level 100% L L Medium Level 60% H L Low Level 20% L H Zero Current 0% H H

• Toshiba B-SV4T, 3-1 3. REPLACING THE IMPORTANT PARTS  Lubrication Any machine is generally in its best condition when delivered; therefore, it is necessary to try to keep this condition. Unexpected failure occurs due to lack of oil, debris, or dust. To keep its best condition, periodically clean the machine and apply proper kinds of oil to each part in which lubrication is needed. Although the frequency of lubrication varies according to how much the machine is used, at least it is necessary to lubricate before

• Toshiba B-SV4T, 2-8 Usage Notes 1. Unused input pins should be pulled up or pulled down. 2. The WDTOVF pin should be pulled down in the SH7044/SH7045 F-ZTAT version. However, if it is necessary to pull this pin down, a resistance of 100 k or higher should be used.

• Toshiba B-SV4T, 3-13 3.9 Replacing the Print Head Ass’y 1. Press right concave of the print head bracket and use a flat screwdriver to stick right side of the printer head bracket then pick up the print head ass’y. 2. Disconnect print head harnesses. 3. Reassemble parts in reverse procedures. Print Head Ass’y CAUTION! 1. NEVER touch the element when handling the Print Head Ass’y. 2. NEVER touch the connector pins to avoid a breakdown of the Print Head by static electricity. Bracket Concave Stick Flat Screwdriver Here

• Toshiba B-SV4T, 3-4 3.2 Replacing the Lower Inner Cover 1. Refer to 3.1 to remove the top cover ass’y. 2. Remove the 6 screws on lower inner cover. Turn the printer upside down, remove the 2 screws of hinge holder, and 1 screw of memory module cover. 3. Disconnect all harnesses from Main PCB ass’y. Lift up the lower inner cover. 4. Replace the lower inner cover. 5. Reassemble in reverse procedures. Lower inner cover Screws Screws Memory module cover Screw Screw of hinge holder Screw of hinge holder

• Toshiba B-SV4T, 1-7 NOTE (1). Leading edge of black mark is congruent with trailing edge of butt label or tag. (2). The mark-offset error from the trailing edge is +/- 0.76mm (+/- 0.030”). (3). Attached hole maybe used as a black mark sensor. Oval / Rectangular attached hole is recommended. Rectangular Aperture Detection If the rectangular aperture located at the center of label/tag, please use the reflective sensor. Inside of the up–cover has a Black Mark, this is aimed for aperture or transparen

• Toshiba B-SV4T, 3-5 3.3 Replacing the Lower Cover Ass’y 1. Refer to 3.1 to open the top cover ass’y. 2. Refer to 3.2 to remove the 6 screws of lower inner cover. Turn the printer upside down, remove the 2 screws of hinge holder, and 1 screw of memory module cover. 3. Disconnect all harnesses from Main PCB ass’y. Lift up the lower inner cover. 4. Replace the lower cover ass’y. 5. Reassemble in reverse procedures. 3.4 Replacing the Main PCB Ass’y 1. Please refer to 3.2, 3.3 for disassembling the lower cover ass’y and lower inner cover. 2. Disconnect all harnesses from the main PCB ass’y. 3. Remove 4 screws on the main PCB ass’y. Scr

• Toshiba B-SV4T, 6-1 6. MAINTENANCE WARNING! 1. Be sure to disconnect the power cord before performing maintenance. Failure to do this may cause an electric shock. 2. To avoid injury, be careful not to pinch your fingers while opening or closing the top cover and print head block. 3. The print head becomes hot immediately after printing. Allow it to cool before performing any maintenance. 4. Do not pour water directly onto the printer. This section presents the clean tools and methods to maintain your printer. Use one or more of the following supplies that meets your needs:  Cleaning pens  Cleaning swabs �

• Toshiba B-SV4T, PRINTED IN JAPAN TOSHIBA Barcode Printer B-SV4T SERIES Document No. EO18-33019 Original Jun., 2007 (Revised ) Printer Manual This manual includes the contents of the Product Descrption, Maintenance Manual, and Circuit Description.

• Toshiba B-SV4T, 1-6 Black Mark Detection The reflective sensor is full range moveable for detecting the black mark and nutchf. The scope of black mark length detection is min. 2.0 mm, max. 3.81 mm and min. black mark width 8mm. Figure (3) Black Mark Detection Figure (4)

• 2-14 2.8 Stepping Motor Drive / Protection Circuit Fig. 10 Stepping Motor Drive/ Protection Circuit Diagram Connector, JP8, sends the pattern as shown in table1. The status of I0 & I1 determines the stepping motor power level. The power level pattern is shown in table2. The motor port is a protection pin. When it is at low level, the power

• Toshiba B-SV4T, 3-14 3.10 Replacing the Head Open Micro Switch 1. Please refer to 3.1 for disassembling the top cover ass’y and top inner cover. 2. Disconnect ribbon drive block by screwing off 4 screws at top inner cover. 3. Remove 2 screws and remove the head open micro switch. 4. Reassemble parts in reverse procedures. Screws Head Open Micro Switch Ribbon Drive Block Screws Screws Top Inner Cove r

• Toshiba B-SV4T, 5-4  The printer serial port setting is not correspondent to the PC’s setting Please do the configuration by TPCL commands. 9. Poor print quality  The head maybe dirty. Clean the thermal print head.  Adjust the print density setting.  Ribbon and paper media are not compatible. 10. Stepping motor does not feed label  Does stepping motor function normally?  Are U11, and U12 (3717 driver IC) of main PCB ass’y broken? 11. No 5V DC on main PCB ass’y.  Is switching power broken?  Is main PCB ass’y U3 broken? Please replace a new main PCB ass’y . 12. Cutter functions abnormally.

• 4-4 7. Connect the harness of strip module at JP17 on the main PCB ass’y . 8. Put down the lower inner cover onto lower cover ass’y. 9. Push strip module to lock to the lower inner cover. 10. Reassemble parts in reverse procedures. Lower Cove r Ass’ y Lower Inner Cove r Strip Module Main PCB Ass’ y JP17

• Toshiba B-SV4T, 3-3 3. Remove the 6 screws in the top inner cover. 4. Disconnect the harness from the Feed button PCB. Replace the top cover ass’y. 5. Reassemble parts in reverse procedures. Screws Screws

• Toshiba B-SV4T, 2-1 2. ELECTRONICS 2.1 Circuit Description Fig. 3 Circuit Diagram The main PCB ass’y of printer includes 10 system blocks: 1. MCU. 2. Memory System. 3. Decoder System. 4. Print Head System. 5. Motor System. 6. Power System. 7. Communication Interface System. 8. USB System. 9. Sensor System. 10. Cutter System.

More Instructions:

	Toshiba B-SV4T Owner's manual 19-11-2023 42	DOWNLOAD
	Toshiba B-SV4T Safety precautions 28-08-2023 2	DOWNLOAD

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