183
Installing and Wiring Telephone Power Supplies
October 2002
1 Disconnect the terminal equipment from the wall jack.
2 If the LED goes off, the terminal equipment is faulty and must be replaced. If the LED is
still lit, find and repair the short circuit in the building wiring.
3 Reconnect the terminal equipment to the wall jack and retest terminal equipment
operation.
1151A1 and 1151A2 Power Supplies
The 1151A1 and 1151A2 power supplies comply with the Underwriters Laboratories Inc. (UL)
Standard UL 1950, second edition.
For safety instructions, see ‘‘Important Safety Instructions for 1151A1 and 1151A2 Power
Supplies’’ on page 183. For installation instructions, see ‘‘Connect the 1151A1 or 1151A2
Power Supplies’’ on page 184.
NOTE:
The 1151B1 and 1151B2 power supplies replace the 1151A1 and 1151A2 power supplies.
Important Safety Instructions for 1151A1 and
1151A2 Power Supplies
Please read the following helpful tips. Retain these tips for later use.
When using this power supply, the following safety precautions should always be followed to
reduce the risk of fire, electric shock, and injury to persons.
• Read and understand all instructions.
• Follow all warnings and instructions marked on this power supply.
• This product can be hazardous if immersed in water. To avoid the possibility of electrical
shock, do not use it near water.
• To reduce the risk of electric shock, do not disassemble this product except to replace the
battery.
• This product should be operated only from the type of AC power source indicated on the
label. If you are not sure of the type of AC power being provided, contact a qualified
service person.
• Do not allow anything to rest on the power cord. Do not locate this product where the
cord will be abused by persons walking on it.
Complies UL 1950
Certified CSA 22.2
Approved EN6950
Approved CE
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