29
TTP-243 Pro/ 243E Pro/ 342 Pro
Bar Code Printer
4.9 Ribbon Sensor (Receiver) Replacement
1. Follow the instructions in Section 4.1 to remove all the connectors on mainboard.
2. Take out the mechanism.
3. Remove the screws, springs and spring bushing on both sides of the mechanism.
Spring Installation on Left Side and Right Side
Note: The left side spring and the right side spring are different in shape. The right
side spring has a straight end, when the left side spring has an end that is
curved 90 degrees.
4. The main mechanism is divided into upper mechanism and lower mechanism.
5. The ribbon sensor (receiver) is located in the upper mechanism.
6. Remove the screws on the ribbon sensor cover.
Ribbon Sensor Cover
Flat Tap Screw
Sensor Cover
Print Head