Replacing The Battery - HP Visualize c3650 Supplementary Manual

field replaceable units
FRU removal and replacement

replacing the battery

The battery in the HP workstation c-class is contained within the real time clock module,
part number 1826-4269, on the system board. The component reference designation is U33
on the system board. Follow the steps below to replace the battery:
1. Close all open applications on the workstation then use the power button on the front
panel to shut down.
2. Unplug the power cord from the workstation to disconnect all AC power. Remove the
workstation left side panel and place the workstation flat on a cushioned stable surface.
Adhere to electrostatically safe best practices before handling any internal components.
3. Remove the two captive screws for the power supply shown in Figure 4-7. on page 102.
Pull up on the power supply handle to engage the bail support for positioning the power
supply at approximately 90˚ to the system board.
Unplug the 6-pin power supply cable from the system board and move aside for
accessing the dual-in-line pin socket connector.
4. Carefully remove the defective real time clock module. Note the polarity dot which is
silk-screened on the component side of the circuit board.
CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the
same or equivalent type recommended by the manufacturer. Dispose of used
batteries according to the manufacturer's instructions
CAUTION Il y a danger d´explosion s´il y a remplacement incorrect de la batterie.
Remplacer uniquement acvec une batterie du même type ou d´un type
recommandé par le constructeur. Mettre au rébut les batteries usagées
conformément aux instructions du fabricant.
5. Insert the replacement part for U33 with the correct polarity to ensure proper
functionality. See Table 4-2. on page 95 for the correct part number.
6. Reconnect the 6-pin power supply cable to the system board. Push back slightly on the
power supply to disengage the support bail from the bail lock. Lower the power supply
to original operating position. See Figure 4-8. on page 103.
7. Replace the left side panel of the system unit as shown in the section "closing the left
side panel of the system unit" in this chapter.
Carefully inspect the seating of the left side panel in the mainframe chassis to assure
that the safety interlock switch is activated.
Apply AC power to the workstation and cycle the power button to the on position.
8. The HP workstation c-class is now ready to reboot with the operational battery.
150 Chapter 4