HP 2700n Service Manual - Page 162
Printed circuit assemblies (PCAs), Low-voltage power-supply PCA
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Printed circuit assemblies (PCAs) NOTE For information about removing the 500-sheet feeder PCA, see 500-sheet feeder driver PCA on page 172 in the 500-sheet feeder section of this chapter. Low-voltage power-supply PCA CAUTION PCAs are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when removing PCAs. Always perform service work at an ESD-protected workstation or mat. If an ESD workstation or mat is not available, ground yourself by touching the sheet-metal chassis before touching an ESD-sensitive part. Protect the ESD-sensitive parts by placing them in ESD pouches when they are out of the printer. CAUTION When you turn off the printer, the capacitor inside the low-voltage power supply retains electrical charge. To avoid electrical shock, use the low-voltage power-supply discharge tool to drain the capacitor. This tool is available from HP; order part number RK2-1007-01. The tool comes with instructions that explain how to use it. 1. Remove the following components: ● Fuser. See Fuser on page 115. ● Upper cover. See Upper cover (fuser door) on page 100. ● Rear lower cover. See Rear lower cover on page 103. ● Left cover. See Left cover on page 104. ● Right cover. See Right cover on page 107. ● Rear upper cover. See Rear upper cover on page 111. 144 Chapter 5 Removal and replacement ENWW