| | | | EO18-33025 |
| | | | (Revision Date: Mar. 27, 2009) |
| | | TABLE OF CONTENTS | |
| | | | Page |
1. | OUTLINE------------------------------------------------------------------------------------------------------------- | 1- 1 |
| 1.1 | Features of the B-EV4D/EV4T-------------------------------------------------------------------------- | 1- 1 |
| | 1.1.1 | Front View ------------------------------------------------------------------------------------------ | 1- 1 |
| | 1.1.2 | Rear View ------------------------------------------------------------------------------------------ | 1- 1 |
| | 1.1.3 | Interior View---------------------------------------------------------------------------------------- | 1- 2 |
| 1.2 | Indications of the Model Name ------------------------------------------------------------------------- | 1- 4 |
| 1.3 | Basic Specifications --------------------------------------------------------------------------------------- | 1- 5 |
| 1.4 | Key and LED ------------------------------------------------------------------------------------------------ | 1- 8 |
| 1.5 | Supply Specifications ------------------------------------------------------------------------------------- | 1- 9 |
| | 1.5.1 | Media Type----------------------------------------------------------------------------------------- | 1- 9 |
| | 1.5.2 Detection Area of the Transmissive Sensor ---------------------------------------------- | 1-10 |
| | 1.5.3 Detection Area of the Reflective Sensor--------------------------------------------------- | 1-10 |
| | 1.5.4 | Ribbon---------------------------------------------------------------------------------------------- | 1-11 |
2. | ELECTRONIC SPECIFICATIONS ---------------------------------------------------------------------------- | 2- 1 |
| 2.1 | Block Diagram ---------------------------------------------------------------------------------------------- | 2- 1 |
| 2.2 | Main PC Board Layout------------------------------------------------------------------------------------ | 2- 2 |
| 2.3 | Description of the MAIN PC Board -------------------------------------------------------------------- | 2- 3 |
3. | REPLACING THE IMPORTANT PARTS ------------------------------------------------------------------- | 3- 1 |
| 3.1 | Replacing the Top Cover--------------------------------------------------------------------------------- | 3- 2 |
| | 3.1.1 | B-EV4T model------------------------------------------------------------------------------------- | 3- 2 |
| | 3.1.2 | B-EV4D model ------------------------------------------------------------------------------------ | 3 -3 |
| 3.2 | Replacing the Lower Cover------------------------------------------------------------------------------ | 3- 6 |
| 3.3 | Replacing the Main PC Board -------------------------------------------------------------------------- | 3- 7 |
| 3.4 | Replacing the Platen Ass’y ------------------------------------------------------------------------------ | 3- 9 |
| 3.5 | Replacing the Print Head Ass’y------------------------------------------------------------------------ | 3-10 |
| | 3.5.1 | B-EV4T model------------------------------------------------------------------------------------ | 3-10 |
| | 3.5.2 | B-EV4D model ----------------------------------------------------------------------------------- | 3-12 |
| 3.6 | Replacing the Stepping Motor ------------------------------------------------------------------------- | 3-15 |
| 3.7 | Replacing the Gear Cover ------------------------------------------------------------------------------ | 3-17 |
| 3.8 | Replacing the Feed Button PC Board---------------------------------------------------------------- | 3-19 |
| 3.9 | Replacing the Cover Open Sensor ------------------------------------------------------------------- | 3-20 |
| 3.10 | Replacing the Ribbon Sensor -------------------------------------------------------------------------- | 3-21 |
| 3.11 | Replacing the Black Mark Sensor--------------------------------------------------------------------- | 3-22 |
| 3.12 | Replacing the Feed Gap Sensor (Lower) ----------------------------------------------------------- | 3-24 |
| 3.13 | Replacing the Feed Gap Sensor (Upper) ----------------------------------------------------------- | 3-26 |
4. | TROUBLESHOOTING ------------------------------------------------------------------------------------------- | 4- 1 |
| 4.1 | LED Status--------------------------------------------------------------------------------------------------- | 4- 1 |
| 4.2 | Print Quality-------------------------------------------------------------------------------------------------- | 4- 2 |
5. | MAINTENANCE---------------------------------------------------------------------------------------------------- | 5- 1 |
6. | FIRMWARE DOWNLOAD MODE----------------------------------------------------------------------------- | 6- 1 |
