HP LaserJet Series II Printing Codes Along Wi

DocumentID: 633925
Revision Date: 29-Feb-96 3:03:28 PM

The information in this document applies to:
WordPerfect® 5.1 for DOS

Problem

Symptoms: The customer tries printing and gets codes printing with the text characters. All of the text characters are printing out as capital letters. He is using an HP LaserJet Series II printer and a Zenith computer. Solutions: There are 8 bits in a byte (0..7). The data representation of a character is controlled by turning on and off these bits. The only difference between a capital and a lowercase letter is whether bit number 5 is on or off. The printout clearly showed that all characters that needed bit 5 to be turned on was being left off. So the characters for the word "this" were printing out as "THIS". This was not only affecting the text the customer was sending but the escape sequences as well. The escape code (27), also requires that bit 5 be turned on. Since this bit was left off, the printer did not recognize it, or the code that followed, and was printing them out as well. This can usually be tracked down to one of three things. 1) Printer cable/switch box, 2) Printer port, or 3) Computer port.

Answer:

Details:

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