+1.2VLDTA Agpvddq | MiTAC 8355 guide

8355 N/B MAINTENANCE

8.1 No Power

When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.

Note:

P12 : Page 12 on circuit diagram.

	U529	P26	PU8	P27	L62		P8
	U529	+3V	PU8	+1.2VLDTA	L62	AGP_VDDQ
PGUP	+3VS	+3V		+1.2VLDTA		AGP_VDDQ		PU503 : Through by part PU503.
	U8	P5	U15	P26	L514		P8
	U8	VSUSNB	U15	+1.5VAGP	L514		P8
		VSUSNB		+1.5VAGP		VDD_CORE1.5
	L528	P12	PU503	P25	JL523	P23	L24	P8
	L528	+3VS_USB	PU503	+1.8V_P	JL523	+1.8V	L24	P8
		+3VS_USB		+1.8V_P		+1.8V		ADD_1.8
	U4	P12					L545	P8
	U4	P12					L545	VDDDI_1.8
		+2.5VS						VDDDI_1.8
	L75	P18					L515	P8
	L75	+PHYVDD					L515	VDD_PLL1.8
		+PHYVDD						VDD_PLL1.8
	L71	P18					L513	P8
	L71	+PHYAVDD					L513	VDD_CORE1.8
		+PHYAVDD						VDD_CORE1.8
	L60	P19					L4	P8
	L60	+3VS_LAN					L4	A2VDDQ_1.8
		+3VS_LAN						A2VDDQ_1.8
							L518	P8
							L518	VDD_PNLIO1.8
								VDD_PNLIO1.8
							L61	P8
								VDD_PNLPLL1.8
							L63	P8
							L63	VDD_MEMPLL1.8
								VDD_MEMPLL1.8

123

Image 124

MiTAC 8355 service manual +1.2VLDTA Agpvddq

Contents

8355 8355 N/B Maintenance Contents Trouble Shooting ……………………………………………………………………………………… Audio Failure ………….…………………………………………………………………………………………… Hardware Engineering Specification Introduction 8355 N/B Maintenance System Hardware Part CPU CPU ClawHammer Processor Compatible with Existing 32-bit Code BaseAMD x86-64 Technology Integrated Memory Controller Power Management HyperTransport. Technology to I/O DevicesKbyte 2-way Associative ECC-Protected L1 Data Cache Way Associative ECC-Protected L2 Cache Electrical Interfaces Power SuppliesPackaging System frequency System frequency synthesizerICS950402Programmable Timing Control Hub AMD-K8 processor Recommended Application Features 3.1 K8T800 VIA K8T800+VT8235High Performance K8 CPU Interface Full Featured Accelerated Graphics Port AGP 8x Controller 8355 N/B Maintenance 3.2 VT8235 8355 N/B Maintenance General Description Smartshader Advanced Shader Technology High Performance Memory Support Dual Display Support Ideal for Windows 2000 and Windows XP General and Interfacing Features 8355 N/B Maintenance 8355 N/B Maintenance 5 AC’97 Audio System C-MEDIA Electronics INC., CMI9738-S 8355 N/B Maintenance MDC PCTel Modem Daughter Card PCT2303W Operating System Compatibility Compatibility Modulation Error Correction Dtmf signal levelData Compression DTE interface Dtmf Tone Frequency High group 10+/-2dBm Low group 12+/-2dBm Transmit Level Overview 7 VT6307L PCI 1394a Integrated Host ControllerIntegrated 400 Mbit 2-Port PHY 8355 N/B Maintenance Main Features Embedded CONTROLLER-H8 Memory TimerInterface Converter Ports Power-down modes Other featuresInterrupts Wait control Features Memory System System Flash Memory Bios64MB, 128MB, 256MB, 512MB x64 200-Pin DDR Sdram SODIMMs 11 VT6103 Fast Ethernet 10/100 1-PORT PHY/TRANSCEIVER Cardbus/MediaReader Controller 3V operation with 5V tolerant CardBus Interface Pin Lqfp / 209-ball Lfbga package for CB710 PCI InterfaceSmart Card Interface Secure Digital Interface Memory Stick Interface Interrupt configuration Power Management Control LogicStick interface SmartMedia Interface Supports Zoomed Video port Power Switch Interface Misc Control Logic SuperI/O-PC87393 Outstanding FeaturesGeneral Description 8355 N/B Maintenance Other Functions Keys Feature Meaning CombinationHot Key Function Power ON/OFF/Suspend/Resume Button Cover SwitchAPM mode Acpi mode LED Indicators Fan power on/off management Cmos Battery 7 I/O Port Mini PCI type III BBattery current limit and learning Peripheral Components ROM Drive Power Management System Management ModeFull on mode Doze Mode Suspend to Dram Suspend to HDD Other Power Management Functions HDD & Video Access Appendix 1 VT 8235 Gpio Definition To the previous table Appendix 2 H8 Pins Definition Shadowed block is the selected function Charging KB OUT8 Ilimit ↑ Pull High ↓ Pull Low →3V Level shift Appendix 3 8355 product spec CPU AC adapter FCC, CE, UL, TUV, CB, Bsmi System View and Disassembly System ViewFront View Left-side View Right-side View Rear View Bottom View Top View System Disassembly DDR Sdram Disassembly Battery PackReassembly Keyboard Remove three screws Slide out the keyboard cover Disconnect the cable from system board. Figure 3 CPU Remove four screws Disconnect the fan’s cord HDD Module 11 Remove HDD compartment 13 slide out the hard disk drive 5 CD/DVD-ROM Drive 15 Remove the CD/DVD -ROM drive SO-DIMM 16 Remove the SO-DIMM LCD Assembly 17 Remove two screws 19 Remove the hinge cover 21 Remove the LCD assembly Inverter Board 22 Unscrew four screws 8355 N/B Maintenance LCD Panel 24 Separate the LCD panel 8355 N/B Maintenance System Board 26 Unscrew nine screws 28 Remove the top cover Unscrew one screw and disconnect fan’s cord. Figure Reassembly Modem Card 32 Remove the modem card Touch Pad 33 Free the touch pad 8355 N/B Maintenance Definition & Location of Connectors / Switches Main Board Side a Definition & Location of Connectors/ Switches VR1 Volume Controller Main Board Side B Definition & Location of Major Components U517 TPA0202 Audio Amplifier U518 CMI9738 Audio Codec Pin Descriptions of Major Components AMD Athlontm 64 Processor-1DDR Sdram Memory Interface DDR Sdram Memory Interface Continue AMD Athlontm 64 Processor-2 HyperTransport TechnologyDebug Miscellaneous Hyper Transport transmit Interface K8T800MVT8385 North Bridge-1Hyper Transport Receive Interface K8T800MVT8385 North Bridge-2 Hyper Transport ControlLink Interface AGP Bus Interface K8T800MVT8385 North Bridge-3 Girdy GIRDY# Clock, Reset, Power Control and Test K8T800MVT8385 North Bridge-4 Advanced Programmable Interrupt Controller APICInterface VT8235 South Bridge-1Straps VT8235 South Bridge-2 CPU Speed Control InterfaceLow Pin Count LPCInterface CPU Interface PCI Bus Interface VT8235 South Bridge-3PCI Bus Interface Continue VT8235 South Bridge-4 LAN Controller -Media Independent Interface MIIGeneral Purpose I/O Universal Serial Bus 2.0 Interface VT8235 South Bridge-5 UltraDMA-133 /100 /66 /33 Enhanced IDE InterfaceUltraDMA-133 /100 /66 /33 Enhanced IDE Interface Continue Serial IRQ Resets,Clocks,and Power Status VT8235 South Bridge-6General Purpose Inputs General Purpose Inputs Continue Power Management and Event Detection Continue Power Management and Event DetectionVT8235 South Bridge-7 Power and Ground VT8235 South Bridge-8Internal Keyboard Controller AC97 Audio /Modem Interface Power and Ground Continue ISA Subset /Parallel Bios ROM InterfaceVT8235 South Bridge-9 System Management Bus SMBInterface I 2 CBus U503 System Block DiagramU506 Maintenance Diagnostics Error Codes Code Post Routine Description 118 Diagnostic Tool for Mini PCI Slot Debug Tool Diagnostic Tool for PIO Port Trouble Shooting No Power +1.25VSREFMEM +1.2VLDTA Agpvddq PJ502 No power Battery Can not Be Charged Adinp Battery can not Charge No Display System Clock Check Reset Circuit Checking1 No Display System Failure Reset Circuit Checking2 No Display System Failure Parts Signals No Display AGP Controller Failure LCD No Display U9 P6 AGP Controller Failure Charge BD J2,J3 are cold colder? External Monitor No Display J503 Display Yes OK? Replace faulty monitor Memory Test Error Symptom The extend DDR RAM is failure or system hangs up Memory Test Error Parts Keyboard K/B Touch-Pad T/P Test Error Key Board Controller Keyboard or Touch-Pad Test Error Test Yes Ok? Replace the faulty Keyboard or Touch-Pad Hard Disk Driver Test Error Hard Disk Driver Test Error Hard Driver Test Error CD-ROM Driver Test Error J530 CD-ROM Driver Test Error USB Test Error Symptom An error occurs when a USB I/O device is installed U501 USB Test Error PartsSignals Symptom An error occurs when a PC card device is installed PC-Card Socket Failure PC Card Test Error Memory-Card Socket Failure Memory Card Test Error Memory-Card Socket Failure IEEE1394 Test Error Symptom An error occurs when IEEE1394 device is installed Test Error LAN Test Error Symptom An error occurs when LAN device is installed LAN Test Error Correct it Audio Failure Input Of Audio Subsystem Output Of Audio Subsystem Audio Drive Failure Spare Part List-1 Part Number Description LocationS Spare Part List-2 Spare Part List-3 CFM-BATFUSE Thermal 98C Spare Part List-4 DIODEBAV70LT1,70V,225MW,SOT-23 Spare Part List-5 DVD Combo DRIVE8X24X10X24X,SBW Spare Part List-6 ICEM6A9320BI-3.6M,DDR SDRAM,4MX Spare Part List-7 ICVT8235,SOUTH BRIDGE,BGA,487P LABELSOFTWARE,INSYDE BIOS-M Spare Part List-8 Spare Part List-9 RELAYREED,200V,.5A,NORMAL Open SW1 Spare Part List-10 RES2M Spare Part List-11 RP7,RP8 Spare Part List-12 RP6,RP9 Spare Part List-13 TRANSDTC144WK,NPN,SOT-23,SMT WIRE#28,UL1061,40MM,BLUE,PRC Spare Part List-14Page Page Model CPURESET# CPURESET# 3,12 DDRRASB# MemresetlCPURESET# Corefbh NBLDTRST# CPURESET# VID0VID1 VID2 DIMM-SLOT & Termination K8T400M- VT8385 FS0 14MSBIOSC H8RESET#ACPOWER# H8RESET# BATTG# AGPRESET# M10GPIO0M10GPIO4 M10GPIO5 ATI M10-P2/4 MEMAMD2 MEMAMA2MEMAMD0 VMDA0 MEMAMD0 VMA0 VMDA0 VMA0VMB0 VMDB0 VMDB32 VMA1 VMDA1 VMDA33 VMA2 Crtin Crtgreen+PANELVDD PANELID0 PANELID2 PANELID3 VT8235 1/3- PCI & USB VT8235 2/3- IDE & AC97 VT8235 3/3- VLINK&LAN IDEDPDD0 IDEDPDD1 HDPDD2IDEDPDD2 HDPDD3 IDEDPDD3 HDPDD4 CAD11 CVS1 CARDRESET# POWERONRESET#CAD1 CAD2 MINIPCIGPORESET# WirelesspdSDCD# GND SDWP# SDWP# SDDATA1 LEDCL190 SDDATA0 Sdclk Sdcmd SDDATA3 SDDATA2 PCIAD4 PCIAD1 TPA0NTPA0P TPB0P LANPHYRESET# LANMRXDV2PJTX+ LANTX+ Avdd Micvref MicintMicext AC97SDOUT AC97SDIND0 Audiomute Ampmute DEVICEDECT#DECTHP#/OPT Spdifout LPCSPIORESET# PD6 LPCSPIORESET# LPCFRAME#INIT# PIOD/INT# Tclkd H8RESET# SCI#/FANSWITCH H8WAKEUP#H8ENABKL H8RESET# SCI#/FANSWITCH USBOC0# USBOC2# USBOC5# USBOC2#USBP0P USBP2P SA0 SD1 SA1 SD2 SA2 PCIGNT#4 SD3 SA3 PCIGNT#5 PCICARDBUSGNT#0SD4 SA4 SD6 SA6 OD3 OD5Pgvcccore PWRONM9 +2.5VS&+1.25VS&+1.8V&+1.2V +3VS / +5VS DVMAINP2VOSENSE1 VOSENSE2 For M10 +1.2V&+1.0V Adinp ADP1Batt Ilimit Adinp Batt LiovpLiovp Charging Battdead VMAINP3 PVID0PVID1 PVID2 Reference Material Tel Fax Second Edition Nov Mail Willy .Chen @ mic.com.tw