• Do not perform any action that causes a hazard or makes the equipment unsafe.
• Before you start the device, ensure that other personnel are not in a hazardous position.
• Place removed covers and other parts in a safe place, away from all personnel, while you are servicing
the unit.
• Keep your tool case away from walk areas so that other people cannot trip over it.
• Do not wear loose clothing that can be trapped in the moving parts of a device. Ensure that your sleeves
are fastened or rolled up above your elbows. If your hair is long, fasten it.
• Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconducting clip,
approximately 8 cm (3 in.) from the end.
• Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.
Remember: Metal objects are good electrical conductors.
• Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using
solvents, or working in any other conditions that might be hazardous to your eyes.
• After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device
that is worn or defective.
• Reinstall all covers correctly after you have nished servicing the unit.
Inspecting the system for unsafe conditions
Use caution when you are working in any potential safety hazardous situation that is not covered in the
safety checks. If unsafe conditions are present, determine how serious the hazards are and whether you
can continue before you correct the problem.
Before you start the safety inspection, make sure that the power is off, and that the power cord is
disconnected.
Each device has the required safety items that are installed to protect users and support personnel from
injury. Only those items are addressed.
Important: Good judgment must also be used to identify potential safety hazards due to the attachment
of non-IBM features or options that are not covered by this inspection guide.
If any unsafe conditions are present, you must determine how serious the apparent hazard might be and
whether you can continue without rst correcting the problem. For example, consider the following
conditions and their potential safety hazards:
Electrical hazards (especially primary power)
Primary voltage on the frame can cause serious or lethal electrical shock.
Explosive hazards
A damaged CRT face or a bulging capacitor can cause serious injury.
Mechanical hazards
Loose or missing items (for example, nuts and screws) can cause serious injury.
To inspect each node for unsafe conditions, use the following steps. If necessary, see any suitable safety
publications.
1. Turn off the system and disconnect the power cord.
2. Check the frame for damage (loose, broken, or sharp edges).
3. Check the power cables by using the following steps:
a) Ensure that the third-wire ground connector is in good condition. Use a meter to check that the
third-wire ground continuity is 0.1 ohm or less between the external ground pin and the frame
ground.
b) Ensure that the power cord is the appropriate type, as specied in the parts listings.
c) Ensure that the insulation is not worn or damaged.
4. Check for any obvious nonstandard changes, both inside and outside the unit. Use good judgment
about the safety of any such changes.
Chapter 1. Notices
9
To Next Page
Loading...
Need help?
General
