Difficulty: Easy
Correct Answer: fuser
Explanation:
Introduction / Context:
Laser printers fix toner to paper by heat and pressure. Safety awareness is crucial during maintenance to avoid burns and equipment damage.
Given Data / Assumptions:
Concept / Approach:
The fuser assembly contains heated rollers that reach high temperatures to melt toner and bond it to paper. Immediately after printing, the fuser is very hot. While the high-voltage power supply and corona assemblies are electrically dangerous, the thermal hazard is specifically the fuser.
Step-by-Step Solution:
Verification / Alternative check:
Service manuals warn about fuser temperature and recommend cooldown time. Temperature sensors (thermistors) and thermal fuses on the fuser underline the heat risk.
Why Other Options Are Wrong:
Common Pitfalls:
Opening the fuser immediately after heavy printing; touching the roller surface; ignoring lockout/tagout and ESD protocols while servicing.
Final Answer:
fuser
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