46  S-Class 
4.4.4  Ticket Detect Sensor Cleaning 
 
The Ticket Detect Sensor initiates the auto-loading process by signaling 
the presence of ticket stock within the Media Guides. If the sensor 
becomes blocked with paper particles, ticket feeding problems can occur. 
Clean the sensor as follows:  
 
  Turn ‘Off’ and unplug the printer. (ST Models: Raise the access 
cover; see Section 3.2.) 
 
 Slide the printhead latch to the ‘unlocked’ position and raise (or, in 
the case of SV Models, lower) the printhead assembly (see Section 
4.4.1).  
 
 Remove any ticket stock.  
 
 Lower (or raise) the printhead assembly and slide the printhead latch 
into the ‘locked’ position.  
 
 Using compressed air, direct an air stream under the area indicated 
by dotted line in the drawing below to clean the sensor. 
 
 
Media Guide
Ticket Detect Sensor
(located under the Media Guide)
Use compressed air here
 
 
 
 Plug in and turn ‘On’ the printer. Load ticket stock; see Section 3.2. 
ST Models: Close the access cover. This completes the procedure.