Epson EB-E01, Service Manual, Page: 143 / 190

EB-E01 series Disassembly and Assembly INTERNAL USE ONLY
SEIKO EPSON 143 Revision A
3.5.1.1 Insulation resistance test
 Testing apparatus
Insulation ohmmeter (Rating: 500 V/100 M Ω )
 Measurement range: Select "500 V"
 Tester lead wires:
• Black lead wire: Connect it to the "EARTH" terminal.
• Red lead wire: Connect it to the "LINE" terminal
 Standard/Judgment level
Insulation resistance should be 10 MW or more.
 Testing procedure
1. Connect the crocodile clip of the black lead wire to "C" of
theprojector’s Computer terminal.
2. Put the probe of the red lead wire to "A" on the AC inlet of
theprojector.
3. Set the measure switch to LOCK, and wait for one minute.
4. Measure the insulation resistance between "A" and "C" (1) after one
minute.
5. Check that the insulation resistance after one minute is 10 M Ω or
more.
6. Measure the insulation resistance between "B" and "C" (2) in the same
way as for (1).
7. Check that the insulation resistance of (2) after one minute is 10 M Ω or
more.
 Measure EH-TW740 at the position in the figure below.
Because high voltage (500 V) is present, do not touch the probe during
testing.
1
2