Cautions On Service Operations - Dell 2135cn Service Manual

7) The Multi Function Printer is not installed under direct sunlight.
8) The Multi Function Printer is installed in a well-ventilated place.
9) The Multi Function Printer is installed on a firm and stable surface.
10) The paper meets the specifications (standard paper is recommended).
11) The Multi Function Printer is handled properly.
12) The high frequency service items are replaced at the recommended print count intervals.

1.3 Cautions on Service Operations

1) Be sure to remove the power cord unless otherwise required.
While the Multi Function Printer is powered ON, never touch the conductive parts
unless otherwise required.
Never touch the conductive parts of the power switch and inlet of the LVPS,
because they are live even while the printer is powered off.
2) When checking some parts with covers removed and with the interlock, safety, and power switches
ON, disconnect the connectors (P/J411 and P/J412) on the ROS ASSY unless otherwise required.
When checking some parts with covers removed and with the interlock, safety, and
switches ON, laser beams may be irradiated from the ROS ASSY. For your safety,
be sure to disconnect the connectors (P/J411 and P/J 412) unless otherwise
required.
3) When checking some parts with the Front Cover removed and the Multi Function Printer powered
ON, be sure to disconnect the connector (P/J16) on the PWBA MCU unless otherwise required.
When checking some parts with the Front Cover removed and the printer powered
ON, be sure to remove the connector (P/J16) on the MCU. Otherwise, a high voltage
may be output from the HVPS.
When connecting the connector (P/J16) on the MCU according to the instructions
in the FIP, never touch the HVPS and high voltage parts.
4) When outputting a high voltage using the Diag Tool, etc., keep all the covers on unless otherwise
required.
When outputting a high voltage using the Diag Tool, etc., ensure that:
- The high voltage carrying parts must never be touched.
- The instructions in this manual must be followed.
5) When operating the drive unit using the Diag Tool, etc., keep all the covers on unless otherwise
required.
When operating the drive unit using the Diag Tool, etc., ensure that:
- The drive unit must never be touched.
- The instructions in this manual must be followed.
6) When touching hot parts, be careful not to get burnt.
7) While working, be sure to wear a wrist band or the like to dissipate static charges from your body.
Version 2 2008.03.31
1 - 2
Chapter 1 Troubleshooting