EPSON AcuLaser C1900/AcuLaser C900 Revision B
Product Description Control Panel 48
<AcuLaser C900>
Figure 1-8.  Control Panel of AcuLaser C900
 Meaning of LED Flashing
NOTE 1: After the power on, two LEDs will light up and then go out about 1.5 seconds later.
2: During RAMCHECK, the Ready LED blinks faster than Blink 1 
(On for 0.1 sec. and then off for 0.1 sec.)
3: Three types of blink are available: 
Blink 1 is a fast blink that goes on and then off for 0.3 second each
Blink 2 goes on and then off for 0.6 second each
Blink 3 is a slow blink that goes on for 0.6 second and then off for 2.4 seconds.
Table 1-33.  Control Panel Description of AcuLaser C900
No. Name Note
c
Ready LED Color: Green
d
Error LED Color: Red
c
d
Table 1-34.  Meaning of LED Flashing on AcuLaser C900
Ready LED Error LED Supplement Meaning
Off Off - Power off
Off On -
Controller fatal errors 
• Video error 
• Data expansion error 
• EEPROM access error 
• Software error
Blink 1 Off -
Warming up, and Data receiving, Reset, Calibrating 
Printer, Cooling Down, Please Wait
Blink 3 Off - Warning of consumables (4 types)
Blink 1 Blink 1
Blink alternately Engine error
Blink 1 Blink 1
Blink simultaneously RAM check error, no installed RAM
Blink 1
and Off
Blink 1
Repeat this state two 
times
Other IPL error
Blink 1 On - Protocol error
On Off -
Ready to print, Printing Job, Standby, Warning (other 
than consumables)
On Blink 1 -
Recoverable errors
• Check Media Type
• Install consumables (3 types)
• Clean Sensor 
• Replace Consumables (4 types) 
•Paper Set 
• Invalid Size 
• Underrun Error 
• Mem Overflow 
• Duplex Mem Overflow 
• Invalid AUX I/F Card
On On -
Paper Out, Paper Jam, Duplex Paper Size Error, 
Cover Open (2 types)