Panasonic CF-48 Service Manual

Also see for Toughbook CF-48 Series: Reference manual Operating instructions Reference manual Service manual Reference manual

3 - 13.Technical Information3.1 System Overview3.1.1 System ConfigurationThe main system is made up of a Main board, a SUB board, a Jack board, a LED board, a IF switch board,a PAD board and a COM board.The power circuit has voltage for individual 1.6V/2.5V/3.3V/5V/12V.It also supports both mixed-voltage LSIs at 3.3V/5V and single-voltage LSIs at 3.3V.The CPU operates at 1.6V, 1.35V(core)/2.5V; the main memory at 3.3V; the core logic at 3.3V/5V; and theother main chips at 3.3V.3.1.2 Power Supply SystemThe power supply used by the Main board is generated on the Main board based on the voltage from the AC adapter.Power is supplied to the AC adapter and battery pack in that order when the RTC power is off or is insuspend mode. When neither power supply can be accessed, power is supplied from the clock battery(RTC battery).Block DiagramsPower Supply Configuration DiagramPower Supply System Description On mode SuspendmodeOff/HibernationVC system (VC5, VC3, VC25, VC16, VC15) CPU and logic power supply ON OFF OFFVB system (VB5, VB3) Logic power supply ON ON OFFVA system (VA3) PMC power supply ON ON ONVPP system (VPP) 12V power supply, for the card slot ON OFF OFFTable 1: Description of Power Supply SystemsLi-Ion BATTERY11.1V5400mAhAC ADAPTOR 15.6VBATTERYCHARGERDC/DCCONVERTEROUTPUT 5VVOLTAGEDETECTORAC IN*DC/DCCONVERTEROUTPUT1.6V /1.35VDC/DCCONVERTEROUTPUT 3.3VIC44AC ONOVERVOLVOLTAGEDETECTORVOLTAGEREGULATOROUTPUT12VVOLTAGEDETECTORVOLTAGEDETECTORSUSB*SUSB*SUSBSUSC*OVERVOLACVOKOVERVOLOVERVOLVOLTAGEREGULATOROUTPUT 1.5VIC58IC58IC57SUSBIC43VD12ONIC46IC16VA3VC1VB3VC3VD12SYSPWVC5VM1VB5AC15VCTVGA_COREVOLTAGEREGULATOROUTPUT 2.5VQ70Q62Q72