Before Carrying Out Troubleshooting; Troubleshooting Tools And Equipment; Field Replacement Parts - Epson EMP-S4 Service Manual

3.1 Before Carrying Out Troubleshooting

• If repairs involving the replacement of parts or components have been carried out, always
be sure to re-check whether the replacement parts themselves are operating correctly or not
in order to determine whether the problem is the result of something such as a loose connec-
tor.
• All instructions and procedures listed in troubleshooting flowcharts should be carried out as
given.
• Follow the procedures given in Chapter 4 Disassembly and Assembly when replacing any
of the projector components.
• When checking the operation of the projector, always check that the connectors are con-
nected securely before proceeding to other checks.
• In order to confirm proper operation, use AC power from a normal source and use the cor-
rect cable type.

3.1.1 Troubleshooting Tools and Equipment

The following tools and equipment will be required in order to carry out troubleshooting, and
so you should check that they are on hand.
Name
Projection screen
Tape measure (3 m)
Host computer
USB mouse
Video equipment
Multi meter
Double-sided tape
General tools

3.1.2 Field Replacement Parts

Many of the components that comprise a service unit have each been adjusted in relation to
each other. Therefore, when replacing parts during troubleshooting or repair, do not disassem-
ble service units in order to harvest and use constituent components. This is especially critical
for the components in the optical engine (Light Guide Unit, Prism Unit and Light Valves) and
the MA Board.
Carry out the safety tests after parts replacement is completed.
SEIKO EPSON
EMP-S4
Table 3-1.
Quantity
Projecting images
1
Measuring projection distances
1
Transmitting audio and image data
1
Checking the operation of the mouse
1
Transmitting audio and image data
1
Measuring resistance values and voltages (AC/DC)
1
Short length Attaching parts
1 set Tools and equipment listed in Section 4.1.2
3-2
Application/Other
Revision:B