Toshiba Tec Bev4g Manual

2. ELECTRONICS SPECIFICATIONS EO18-33025 
 
2.3 Description of the Main PC Board
 
2-8 
JP14 (Stepping Motor):  This connector is connected to the Stepping Motor. 
  
 
 
 
 
 
JP16 (Cover Open Sensor): This connector is connected to the Cover Open Sensor. 
  
 
 
 
 
 
JP17 (Black Mark Sensor):  This connector is connected to the Black Mark Sensor. 
 
 
 
 
 
 
 
JP19 (Strip Module):  This connector is connected to the Strip Module. 
 
 
 
 
 
 
 
JP20 (Ribbon End Sensor):  This connector is connected...

2. ELECTRONICS SPECIFICATIONS EO18-33025 
  2.3 Description of the Main PC Board
 
2-9 
JP24 (Stepping Motor Thermistior):  This connector is connected to the Stepping Motor Thermistor. 
  MOTOR TEMP signal is temperature of the stepping motor. 
 
 
 
JP28 (Feed Key/Status LED):  Th is connector is connected to the Feed Key and Status LED. 
 
 
 
 
 
 
 
JP29 (Feed Gap Sensor, Lower):  Th is connector is connected to the Lower Feed Gap Sensor (Photo 
Diode). 
 
 
 
 
Print Head (JP30):  This connec tor...

3. REPLACING THE IMPORTANT PARTS EO18-33025 
(Revision Date: Mar. 27, 2009) 
3.1 Replacing the Top Cover
 
3-1 
3. REPLACING THE IMPORTANT PARTS 
 
 
 
 
 
 
 
 
 
 
 

3. REPLACING THE IMPORTANT PARTS EO18-33025 
(Revision Date: Mar. 27, 2009) 
3.1 Replacing the Top Cover
 
3-2 
3.1 Replacing the Top Cover 
3.1.1 B-EV4T model 
1.  Press down the top cover release button to unlock the top cover, then fully open the top 
cover. 
 
 
 
2.  Use the Phillips screwdriver to remove the 6 screws from the top inner cover. 
 
 
 
 
 
3.  Disconnect the connector from the feed button PC board. 
 
 
 
 
 
Top Cover
T-3x6 Screw 
Feed Button PC Board
Connector
Top Cover 
Release...

3. REPLACING THE IMPORTANT PARTS EO18-33025 
(Revision Date: Mar. 27, 2009) 
3.1 Replacing the Top Cover
 
3-3 
 
4.  Remove the top cover. 
5.  Replace the top cover with a new one, then reassemble in the reverse order of 
removal. 
 
 
3.1.2 B-EV4D model 
1.  Press down the top cover release button to unlock the top cover, then fully open the top 
cover. 
 
 
 
 
 
 
 
 
 
 
 
2.  Use the Phillips screwdriver to remove the 6 screws from the top inner cover. 
 
 
 
 
 
 
 
 
 
 
 
 
 
Top Cover 
Top...

3. REPLACING THE IMPORTANT PARTS EO18-33025 
(Revision Date: Mar. 27, 2009) 
3.2 Replacing the Lower Cover
 
3-4 
3.  Release the media view window hooks which hold the top cover together with the top 
inner cover. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4.  Upward move the top cover release levers, and then release the top cover from the top 
inner cover. 
 
 
 
 
 
 
 
 
 
 
 
 
 
Top CoverTop Inner Cover 
Media View Window
Hook 
Top Cover Release Lever
Top Cover 
Top Inner Cover 

3. REPLACING THE IMPORTANT PARTS EO18-33025 
(Revision Date: Mar. 27, 2009) 
3.2 Replacing the Lower Cover
 
3-5 
5.  Disconnect the connector from the feed button PC board. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
6.  Remove the top cover. 
7.  Replace the top cover with a new one, then reassemble in the reverse order of 
removal. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Feed Button PC Board
Connector  

3. REPLACING THE IMPORTANT PARTS EO18-33025 
(Revision Date: Mar. 27, 2009) 
3.2 Replacing the Lower Cover
 
3-6 
3.2 Replacing the Lower Cover 
1.  Turn the printer upside down and use the Phillips screwdriver to remove the 6 screws. 
2.  Remove the lower cover. 
 
        
 
 
 
 
3.  Replace the lower cover with a new one, then reassemble in the reverse order of 
removal. 
 
 
 
 
 
T-3x12 ScrewLower Cover 

3. REPLACING THE IMPORTANT PARTS EO18-33025 
(Revision Date: Mar. 27, 2009) 
3.3 Replacing the Main PC Board
 
3-7 
3.3 Replacing the Main PC Board 
1.  Refer to section 3.2 to remove the lower cover. 
2.  Remove the screw from the main PC board. 
3.  Disconnect all connectors from the main PC board. 
 
 
 
4.  Use the Phillips screwdriver to remove the 2 screws and use the socket wrench to 
remove the 2 bolts. 
 
5.  Detach the interface plate and the black mylar from the main PC board. 
 
 
 
 
Main PC...

3. REPLACING THE IMPORTANT PARTS EO18-33025 
(Revision Date: Mar. 27, 2009) 
3.3 Replacing the Main PC Board
 
3-8 
6.  Replace the main PC board with a new one, then reassemble in the reverse order of 
removal. 
 
 
 
7.  After replacement, perform the following operations. 
 ●  Perform a media sensor calibration with the button of the printer or B-EV4 Setting 
Tool. 
    Regarding the media sensor calibration, refer to the Owner’s Manual or the B-EV4 
Setting Tool Specification posted on the Barcode...