Dell 3115CN - Cautions for Service Operations

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Chapter 1 Troubleshooting
Version 1 2006.11.21
7) The laser printer is not installed under direct sunbeams.
8) The laser printer is installed in a well-ventilated place.
9) The laser printer is installed on a rigid and stable surface.
10) The paper used meets specifications (standard paper is recommendable).
11) The laser printer is handled properly.
12) The parts which should be periodically replaced are replaced each time when the specified number
of sheets have been printed.
1.3 Cautions for Service Operations
1) Be sure to remove the power cord unless otherwise required.
If the printer is kept ON, never touch the conductive parts unless otherwise
required.
The power switch and inlet are 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 power switches ON,
remove the connector (P/J601) on the ROS ASSY unless otherwise required.
When checking some parts with covers removed and with the interlock and power
switches ON, laser beams may be irradiated from the ROS ASSY. For safety, be
sure to remove the connector (P/J151) unless otherwise required.
3) When checking some parts with the Front Cover removed and power ON, be sure to remove the
connector (P/J16) on the PWBA MCU unless otherwise required.
When checking some parts with the Front Cover removed and power ON, high
voltage may be applied by the HVPS. Be sure to remove the connector (P/J16) on
the PWBA MCU beforehand.
When connecting the connector (P/J16) on the PWBA MCU according to the
instructions of the FIP, never touch the HVPS and high voltage parts.
4) When using Diag. tools or other tools of high voltage, be sure to keep them covered unless other-
wise specified.
When using Diag. Tool or other tools of high voltage, never touch high voltage
parts.
When using Diag. Tool or other high voltage tools, be sure to follow the
instructions in 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 follow the instructions in this manual.
6) When touching hot parts, be careful not to burn yourself.
7) Wear a wrist band or the like to remove static buildup from your body.
1.4 Cautions for Implementing FIP
1) It is assumed in the FIP that the printer controller (PWBA ESS) is normally functioning. If any trou-
ble cannot be corrected by troubleshooting, replace the printer controller with a normal one and
check for proper operation again.
If the problem persists, try replacing the major parts (possible causative parts) first, and then the
related parts.