Service Manual
Page 130
... button. Figure 2-1 Engine test button location Diagrams Plug/jack locations 1 Network port (HP LaserJet Pro 300 color M351a, HP LaserJet Pro 300 color M351dw, and HP LaserJet Pro 300 color M351dn models only) 2 Hi-Speed USB 2.0 port 106 Chapter 2 Solve problems ENWW NOTE: Access the engine test button through a hole in each of the toner cartridge colors) prints. Turn the product on. 2. An engine test page (horizontal lines...
... button. Figure 2-1 Engine test button location Diagrams Plug/jack locations 1 Network port (HP LaserJet Pro 300 color M351a, HP LaserJet Pro 300 color M351dw, and HP LaserJet Pro 300 color M351dn models only) 2 Hi-Speed USB 2.0 port 106 Chapter 2 Solve problems ENWW NOTE: Access the engine test button through a hole in each of the toner cartridge colors) prints. Turn the product on. 2. An engine test page (horizontal lines...