Precautions In Performing Troubleshooting Work - Epson AcuLaser C1100 Service Manual

EPSON AcuLaser C1100

3.1.3 Precautions in Performing Troubleshooting Work

1. Be sure to unplug the POWER CORD before starting troubleshooting work
except when turning power ON is needed.
W A R N I N G
Never touch any live parts unnecessarily when the power is on.
The power switch/inlet part of the LVPS is alive even when the
power switch is turned OFF. Take care not to touch any live parts.
2. If you perform work with the power turned ON, covers removed, and the
interlock and safety switches turned ON, be sure to disconnect the ROS
ASSY connector (P/J601), except when its connection is required.
W A R N I N G
If you perform work with the power turned ON, covers removed,
and the interlock and safety switches turned ON, there is a
danger of the laser beam being emitted from ROS ASSY. Be sure
to disconnect the ROS ASSY connector (P/J601), except when its
connection is required.
3. If you perform work with the power turned ON, covers removed, and the
interlock and safety switches turned ON, be careful of a high voltage from
HVPS.
W A R N I N G
If you perform work with the power turned ON, covers removed,
and the interlock and safety switches turned ON, never touch
HVPS and any other high voltage output part as a high voltage
may be output from HVPS.
TROUBLESHOOTING
4. When touching any hot surfaces, take care not to burn yourself.
5. Wear a wrist strap to discharge static electricity from your body.
6. When replacing the PWBA MCU in accordance with the FIP, be sure to
perform "MCU DATA Backup"and "MCU DATA Restore" operations to
maintain the set of information specific to the subject engine.
C A U T I O N
Refer to
PWBA MCU replacement.
Procedure for troubleshooting
"4.11.5 PWBA MCU" (p.404) for all the details about the
Revision B
121