HP M1522nf Service Manual - Page 188

Fax problems (fax models only) General fax problem-solve Verify the following information before problem-solving fax problems. ● Is the fax set up correctly? ◦ Make sure that the fax cord that came with the product is the cord that is being used. This cord has been tested and meets the device specifications. ◦ Make sure that the fax cord is installed in the correct port. The fax cord must be plugged into the line port. ● What type of telephone line is being used? ◦ Dedicated telephone line: a unique telephone line that is assigned to receive or send a fax. The fax cord must be plugged into the line port. ◦ Shared telephone line: a telephone line that receives or sends voice calls and faxes. A single, shared telephone line can perform only one function at a time. A fax cannot be sent while someone is talking on the telephone or while a computer is connecting to the Internet. ◦ Roll-over lines: a telephone system feature that allows an incoming call to be forwarded to the next available telephone line (used with multiple-telephone-line systems). Try attaching the device to the first incoming telephone line. The product will answer the telephone after it rings the number of times that is specified in the product rings-to-answer setting. ◦ PBX system: a business-environment telephone system. Standard home telephones and the HP LaserJet product use an analog telephone signal. Some PBX systems are digital and might be incompatible with standard telephones and with devices such as the HP LaserJet product. ◦ Distinctive ring service: a telephone system feature that can assign two telephone numbers to one physical line, and assign a distinctive ring pattern to each number. Make sure that the device is set to respond to the correct distinctive ring pattern that the telephone service provider assigned to the fax number. This service is not available in all countries/regions. Make sure that the telephone company provides this service before changing the setting. For more information about distinctive ring service, see Distinctive ring function on page 64. ● Is a telephone-line splitting device installed? ◦ A telephone-line splitter is a device that splits two or more telephone lines from the same jack. Not all splitters are compatible with the device, and not all countries/regions support the use of splitters. Parallel splitters (also called T-splitters) split a single line into two phone jacks so that two devices can share the same line. Line 1/Line 2 splitters provide two unique telephone line outlets from a single jack with two unique telephone numbers (two telephone lines are connected to a single jack). A Line 1/Line 2 splitter must be used if both a fax line and a voice line share the same jack. NOTE: Hewlett-Packard does not recommend using a parallel splitter (T-splitter) with the product because it might degrade the quality of the telephone signal. If a second device must be attached to the telephone line in addition to the product, plug the second device into the telephone port on the product (the port on the back that is marked with a telephone icon). 170 Chapter 6 Problem solve ENWW