HP 4300 Service Manual - Page 180

Internal components CAUTION Hint Firmware DIMM The product contains components that are sensitive to electrostatic discharge (ESD). Always perform service work at an ESD-protected workstation. If an ESD-protected workstation is not available, discharge body static by grasping the printer chassis before touching an ESD-sensitive component. Ground the printer chassis before servicing the product 1. Remove the formatter cover. See "Formatter cover" on page 145. If possible, print a menu map and a configuration page. See "Menu map" on page 240 and "Configuration page" on page 241. Use the information on the these pages to restore any user-set printer configuration options after you install the replacement DIMMs. 2. Open the formatter door. 3. Push the DIMM locking arms away from the DIMM to release it. Remove the DIMM. Figure 98. Reinstall note Firmware DIMM The firmware DIMM must be installed in slot 1 (formatter PCA location J1; topmost slot). If you are installing additional DIMMs, the second DIMM must be installed in slot 2 (formatter location J2; second slot down from the top). If another DIMM is installed, the third DIMM must be installed in slot 3 (formatter location J3; third slot down from the top). If another DIMM is installed, the fourth DIMM must be installed in slot 4 (formatter location J4; bottom slot). The printer will not recognize DIMMs if they are not installed in the correct order. 160 Removing and replacing parts Q2431-90912