Overview - Epson Stylus Pro 7400 Service Manual

EPSON Stylus Pro 7400/7800/9400/9800

6.1 Overview

This chapter provides information on how to maintain the printer in its optimum
operating condition.
Basically, servicing on the Stylus Pro 7400/7800/9400/9800 should be performed on-
site. Be sure to strictly observe the following precautions to avoid an accident or injury
causing the user trouble.
The power switch is installed on the secondary side of the power
W A R N I N G
circuit, so power is always supplied to the power supply circuit
even when the switch is OFF unless the power cord is
unplugged from the wall power outlet. Unless otherwise stated
(for printing or operation checks), be sure to unplug the power
code from the wall outlet before disassembling or assembling
the printer to prevent electric shock and damage to the circuit.
The front sensor which detects the Open/Close statuses of the
printer cover also functions as an interlock switch for safety
purposes. Disabling the switch function is prohibited.
A lithium battery is mounted on the Main Board (control
circuit) for memory backup. Be sure to observe the following
precautions when handling the lithium battery.
• Be careful not to short the electrode of the battery.
When replacing the battery, make sure to insert it in correct
•
orientation.
• Never heat the battery or plunge it into the flames.
• Do not put the Main Board directly on conductive materials.
Be extremely careful not to get the ink into your eye or let it
come into contact with your skin. If it happens, wash out your
eye or skin with water immediately. If any abnormality is
found, contact a physician.
Maintenance
Make sufficient work space for servicing.
C A U T I O N
Set up the printer on a vibration-free and stable flat surface.
The mass of the printers are as follows. Carrying the printer
should be performed by the specified number of people and be
sure to hold the printer with the positions shown in the figure
below.
• Stylus Pro 7400/7800: 49 kg (two persons or more are
required)
Stylus Pro 9400/9800: 90 kg (four persons or more are
•
required)
When air duster is used on the repair and the maintenance
work, the use of the air duster products containing the
inflammable gas is prohibited.
Stylus Pro 7400/7800
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