Cautions For Service Operations - Dell 5110cn Service Manual

1.3 Cautions for Service Operations

1) Be sure to remove the power cord except when it is specifically required.
If the printer is kept ON, never touch the conductive parts while it is not specifically
required.
The power switch/inlet of LVPS is live even while the power supply is cut off. Never
touch the live parts.
2) When checking some parts with covers removed and with the interlock and safety and power
switches ON, remove the connector (P/J151) on the ROS ASSY except when it is specifically
required.
When checking some parts with covers removed and with the interlock and safety
and power switches ON, laser beams may be irradiated from the ROS ASSY. Since
it is dangerous, be sure to remove the connector (P/J151) while it is not required.
3) When checking some parts with the left cover removed and power ON, be sure to remove the
connector (P/J141) on the HVPS while it is not required.
When checking some parts with the left cover removed and power ON, high voltage
may be applied by the HVPS. Be sure to remove the connector (P/J141) on the
HVPS.
When connecting the connector (P/J141) on the HVPS according to the instructions
of the FIP, never touch the HVPS and parts of high voltage.
4) When using Diag. tools or other tools of high voltage, be sure to keep them covered except when
otherwise specified.
When using Diag.Tool or other tools of high voltage, never touch parts of high
voltage.
When using Diag.Tool or other tools of high voltage, be sure to follow the
procedure of this manual.
5) When operating the driving units using the Diag or other tools, be sure to keep them covered
unless otherwise specified.
When operating the driving units using the Diag or other tools, never touch the
driving units. When operating the driving units using Diag or other tools, be sure
to observe the procedures in this manual.
6) When touching hot parts, be careful not to get burnt.
7) Workers should wear a wrist band or the like to remove static electricity from their body , grounding
their body while working.
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Chapter 1 Troubleshooting