Service manual

EPSON Perfection 1250/1250 PHOTO Appendix
47
TPU electrical characteristics
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Rated input voltage 15 V DC
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Rated power supply Operation: Average 4 W
Standby: Average 0 W
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Rated input current 0.3 A
6.1.4 Resistance to electrical noise
Static electricity Panel No errors at 10 kV or less
No damage at 15 kV or less
Metallic parts No errors at 7 kV or less
No damage at 15 kV or less
Test conditions Constants: 150 Ω, 150 pF
Voltage 3 – 15 kV
Cycles 120
6.1.5 Operating environment
Temperature Operation: 41°F – 95°F (5°C – 35°C)
Storage: -13°F – 140°F (-25°C – 60°C)
Humidity Operation: 10% – 80% (no condensation)
Storage: 10% – 85% (no condensation)
6.1.6 Reliability
Main unit MCBF carriage oscillation10,000 cycles
Main unit light source MTTF 5000 hours
TPU Light source MTTF5000 hours
6.1.7 Documents
Reflective documents Smooth surfaced documents
Transparent documents Negative and positive films can be scanned
using the separate transparency unit