Compaq DC7600 HP Compaq dx 7200 and dc7600 Personal Computers, Technical Refer - Page 138

Power and Signal Distribution 7.3.2 Low Voltage Production/Distribution Auxiliary voltages less than 5 volts and all voltages less than 3.3 volts are produced through regulator circuitry (Figure 7-6) on the system board. Power Supply CPU 12 VDC PS 5 VDC PS Regulator Circuit VccP 5 VDC PS 5 Aux PS 5 VDC Switch 5 VDC 1.8 V Regulator 1.8 VDC 0.9 V Regulator 0.9 VDC 5 Aux PS Aux Regulator 3.3 VDC AUX 2.5 VDC AUX Processor PCI, SATA, LPT, COM, Diskette logic USB, PS2 Kybd Chipset, DIMMs DIMMs Chipset Chipset 3.3 VDC PS 3 VDC 3.3 VDC Switch 3.3 VDC PS 1.2 Aux V Regulator 1.2 VDC Aux 2.5 V Regulator 1.5 V Regulator 1.2 V Regulator 2.5 VDC 1.5 VDC 1.2 VDC 1.05 V Regulator 1.02 VDC Clk, PCI, COM logic Clk, S. Bridge, PCI, SIO, Audio, FWH logic Chipset DAC Chipset Processor Chipset Figure 7-6. Low Voltage Supply and Distribution Diagram 7-12 www.hp.com Technical Reference Guide