92 Chapter 2 – Service mode  EN
LJ 2200 Service mode functions
In Service mode, the following can be performed:
• Print a Service mode self-test.
• Verify and set the page count.
• Set the cold reset default.
• Set the demo page = true/false.
• Set the diagnostic functions on or off.
Entering Service mode
Use PJL commands to enter Service mode and perform various Service 
mode configurations. Users must use the exact character and case 
specified for PCL printer commands. 
The following are elements of a typical printer command:
• escape character (begins escape sequence) 
• parameterized character 
• group character
• value field (contains both alpha and numeric characters)
• termination character (uppercase) 
Escape sequences can be combined into one escape sequence string. 
Follow these important rules to follow when combining code:
1 The first two characters after the escape character (the 
parameterized and group characters) must be the same in all of the 
commands to be combined.
2 When combining escape sequences, change the uppercase 
(termination) character in each individual escape sequence to 
lowercase.
Note
The final character of the combined escape sequence must be 
uppercase.