When The Paper Cover Cannot Be Opened - Citizen CT-S4000DCL User Manual

Lighting and blinking status of each error including the above is shown below.
Status
Paper-end
Paper near-end
Printer cover open
Printer cover open
error *1
Cutter lock error
Head overheat error
Paper jam error
Memory check error
Low voltage error
High voltage error or
Power switch operation error
Macro execution
wait *2
Black Mark detection
error
Waiting for paper
(label) cutting*L, *M
Paper (label)
detection error*L, *M
*1: When the printer is printing.
*2: The ERROR LED may blink even in the execution of macro function.

4.7 When the Paper Cover Cannot Be Opened

If the cutter blade remains protruded due to paper jam or for any abnormality,
opening the paper cover may be disabled. In this case, do not open the paper
cover forcibly. Insert a Phillips screwdriver (size #1) into the cutter lock releasing
feed hole and turn it in the direction of arrow (clockwise).
When you find that both ends
of the blade reached the lowest
position, stop turning the
screwdriver. Open the cover
and follow the procedure of
removing jam or other cause of
trouble.
POWER LED
Lights Lights
Lights Lights
Lights Lights
Lights
Lights
Lights
Lights
Lights
Lights
Lights
Lights
OFF
OFF
OFF
Phillips screwdriver
— 25 —
ERROR LED Buzzer
Cutter lock
releasing feed hole