0-8
EMP-S4
SEIKO EPSON Revision:B
2). Ground continuity check
• Testing apparatus: Multimeter (with sensitivity down to 0.1 Ω)
• Multimeter settings
3). Illumination check
• Test conditions: Input a PC or video signal to the projector and check the illumina-
tion for about 5 minutes.
• Evaluation: Projector should operate normally with no smoke or fire.
Check Item Tool Standard
Ground continuity check Multimeter
Should be no resistance
(0.5 Ω or less)
a
b
c
(1)
1. Turn on the power switch.
2. Set the range selection switch to Ω.
3. Connect the black lead wire to the COM terminal.
4. Connect the red lead wire to the V/Ω/Hz terminal.
5. Check that the resistance at (1) in the diagram below is
0.5 Ω or less.
Display
DC/AC, SW
Power supply
lines
Exposed metal part of projector
Range selec-
tion switch
Terminals
V, Ω, HzCOM
Projector AC inlet
Computer IN connector
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