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Precautions
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AC-4000H Service Manual No. 085-7323-08
SERVICE SAFETY
For correct maintenance, and to prevent accidents, please adhere to the following items dur-
ing service.
•
Ensure that the power switch is OFF before any maintenance work and remove the power cable
from the main power outlet.
•
Keep the machine surroundings clean and tidy. Take additional care, especially during disassembly,
not to leave screws etc. inside the machine as this may lead to serious injury.
•
Do not pull internal wiring cables as cable breaks, poor contact, etc. may take place. Always hold
the connector end before removing. Take special care with thermal head cable, where poor contact
may lead to damage.
•
Take care when cleaning thermal heads and print heads, as these are easily damaged.
•
There are precautions relating to assembly and adjustment parts. Read and understand the manual
thoroughly before attempting maintenance.
SAFETY CONSIDERATIONS
For safe operation, the following safety considerations must be observed.
Grounding
This machine requires protective grounding for safe operation. To avoid potential shock hazards, a
protective grounding conductor for the machine must be securely connected to the main grounding
provision by qualified service personnel.
Do not remove covers or enclosures
To avoid personal injury and shock, do not open or remove any covers or enclosures of the machine
unless specified in the manual.
Do not perform unspecified maintenance
For your personal safety, do not perform any maintenance procedures which are not specified in the
manual.
Disconnect power supply before servicing
To ensure your personal safety, disconnect the power supply before servicing.