Xerox 7700DX Service Manual - Page 318
Analyzing the Test Print, Using Test Prints to Isolate a Problem to the Print Engine or to the Image
View all Xerox 7700DX manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 318 highlights
Analyzing the Test Print Test prints provide several uses in troubleshooting printer problems. ■ Isolating problems to either the print engine or to the Image Processing Board and host software. ■ Locating feed and paper transport problems. ■ Detecting print-quality and image registration problems. Using Test Prints to Isolate a Problem to the Print Engine or to the Image Processing Board You can use test prints to determine if a problem is caused by a faulty print engine or by a faulty Image Processing Board or host software. Note This procedure presumes you have investigated any displayed error code or message. If not, please do so now. 1. Print a sample image from the host computer. 2. Enter Printer Diagnostics and generate a test print. 3. Compare both prints. 4. If the problem occurs when you print from the host computer but does not occur when you print from Diagnostics, the problem may be in the Image Processing Board, in the print driver software, or in the application software on the host computer. 5. If the problem occurs when you print a test print, then the problem is in the print engine. Note You can also use the above procedure to assist in determining if a print-quality problem is caused by a faulty print engine, Image Processing board or host software. If the print-quality problem is an image registration problem, refer to "Adjustments and Calibration" on page 4-123 of this manual for instructions on adjusting image registration. Using Test Prints to Locate a Feed or Paper Transport Problem You can use test prints to locate a problem with paper feed or with paper transportation along the paper path. Note This procedure presumes you have investigated any displayed error code or message pertaining to paper feed or transport problems. If not, please do so now. 1. Enter Printer Diagnostics and generate a test print. 2. Follow the paper along the paper path to locate the cause of the problem. 9-288 Phaser 7700 Color Laser Printer Service Manual