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MiTAC 8355 service manual No Display System Failure, Reset Circuit Checking1

Models: 8355

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8355 N/B MAINTENANCE

8.3 No Display (System Failure)

Reset Circuit Checking(1)

+3VS

P23

R522

R168

SW2

1K

PWRBTN# 7

P23

10K

SB_PWRBTN#

0.1U

3

+3VS

U511

C511

91

SB_PWRBTN

2

Q15

Embeded

DTC144WK

R721

VDD5

10K

RSMRST#

P23

Controller

1

C742

4

2

H8_RESET# 1

R266

1U

R808

VCC

U507

RESET

H8/F3437

0

10K

3

IMP811 GND

1

R811

68

H8_PWROK

ALL_PWROK_5V

MN

C750

100K

3

2

0.01U

R642

1M

C678

1

2

C679

X501

18P

16MHz

18P

+3V

P26

+5VS

+5VS

P26

+2.5VS_DIMM

R233

U11B

0

MAIN_PWROK

14

3

U513

2

2

74AHCT08_V 14

VCC

RESET#

8

4

1,2

2

0.1U

MAX809

100K

1

7

8

A,B

U13

VCC

5

C870

R692

GND

U11A

7

3

NC7S08

1

ALL_PWROK_2.5V

1

74AHCT08_V

GND

Y

P27

8355_1.2V	PG_1.2V
8355_1.2V
Module	PG_VCC_CORE

P12~14

U20

South Bridge

VT8235

P3 U503

AMD-K8

P5 U506

North Bridge

VT8385

129

Image 130

MiTAC 8355 service manual No Display System Failure, Reset Circuit Checking1

Contents

8355 8355 N/B Maintenance Contents Trouble Shooting ……………………………………………………………………………………… Audio Failure ………….…………………………………………………………………………………………… Hardware Engineering Specification Introduction 8355 N/B Maintenance System Hardware Part CPU AMD x86-64 Technology CPU ClawHammer ProcessorCompatible with Existing 32-bit Code Base Integrated Memory Controller Kbyte 2-way Associative ECC-Protected L1 Data Cache Power ManagementHyperTransport. Technology to I/O Devices Way Associative ECC-Protected L2 Cache Electrical Interfaces Power SuppliesPackaging Programmable Timing Control Hub AMD-K8 processor System frequencySystem frequency synthesizerICS950402 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 Data Compression Error CorrectionDtmf signal level 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 Interrupts Power-down modesOther features 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 Stick interface Interrupt configurationPower Management Control Logic 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 APM mode Power ON/OFF/Suspend/Resume ButtonCover Switch 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 Full on mode Power ManagementSystem Management 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 Front View System View and DisassemblySystem 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 DDR Sdram Memory Interface Pin Descriptions of Major ComponentsAMD Athlontm 64 Processor-1 DDR Sdram Memory Interface Continue Debug AMD Athlontm 64 Processor-2HyperTransport Technology Miscellaneous Hyper Transport transmit Interface K8T800MVT8385 North Bridge-1Hyper Transport Receive Interface Link Interface K8T800MVT8385 North Bridge-2Hyper Transport Control 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 Low Pin Count LPCInterface VT8235 South Bridge-2CPU Speed Control Interface CPU Interface PCI Bus Interface VT8235 South Bridge-3PCI Bus Interface Continue General Purpose I/O VT8235 South Bridge-4LAN Controller -Media Independent Interface MII Universal Serial Bus 2.0 Interface UltraDMA-133 /100 /66 /33 Enhanced IDE Interface Continue VT8235 South Bridge-5UltraDMA-133 /100 /66 /33 Enhanced IDE Interface Serial IRQ General Purpose Inputs Resets,Clocks,and Power StatusVT8235 South Bridge-6 General Purpose Inputs Continue Power Management and Event Detection Continue Power Management and Event DetectionVT8235 South Bridge-7 Internal Keyboard Controller Power and GroundVT8235 South Bridge-8 AC97 Audio /Modem Interface VT8235 South Bridge-9 Power and Ground ContinueISA Subset /Parallel Bios ROM Interface 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# CPURESET# 3,12 DDRRASB#Memresetl Corefbh VID1 NBLDTRST# CPURESET#VID0 VID2 DIMM-SLOT & Termination K8T400M- VT8385 ACPOWER# FS0 14MSBIOSCH8RESET# H8RESET# BATTG# M10GPIO4 AGPRESET#M10GPIO0 M10GPIO5 ATI M10-P2/4 MEMAMD0 MEMAMD2MEMAMA2 VMDA0 MEMAMD0 VMB0 VMDB0 VMDB32 VMA1 VMDA1 VMDA33 VMA0VMDA0 VMA0 VMA2 +PANELVDD CrtinCrtgreen PANELID0 PANELID2 PANELID3 VT8235 1/3- PCI & USB VT8235 2/3- IDE & AC97 VT8235 3/3- VLINK&LAN IDEDPDD2 IDEDPDD0IDEDPDD1 HDPDD2 HDPDD3 IDEDPDD3 HDPDD4 CAD1 CAD11 CVS1 CARDRESET#POWERONRESET# CAD2 SDCD# GND SDWP# MINIPCIGPORESET#Wirelesspd SDWP# SDDATA1 LEDCL190 SDDATA0 Sdclk Sdcmd SDDATA3 SDDATA2 TPA0P PCIAD4 PCIAD1TPA0N TPB0P PJTX+ LANPHYRESET#LANMRXDV2 LANTX+ Micext AC97SDOUT Avdd MicvrefMicint AC97SDIND0 DECTHP#/OPT Audiomute AmpmuteDEVICEDECT# Spdifout INIT# LPCSPIORESET# PD6LPCSPIORESET# LPCFRAME# PIOD/INT# H8ENABKL H8RESET# Tclkd H8RESET#SCI#/FANSWITCH H8WAKEUP# SCI#/FANSWITCH USBP0P USBOC0# USBOC2#USBOC5# USBOC2# USBP2P SD4 SA4 SA0 SD1 SA1SD2 SA2 PCIGNT#4 SD3 SA3 PCIGNT#5 PCICARDBUSGNT#0 SD6 SA6 Pgvcccore OD3OD5 PWRONM9 +2.5VS&+1.25VS&+1.8V&+1.2V VOSENSE1 +3VS / +5VSDVMAINP2 VOSENSE2 For M10 +1.2V&+1.0V Batt AdinpADP1 Ilimit Liovp Charging Adinp BattLiovp Battdead PVID1 VMAINP3PVID0 PVID2 Reference Material Tel Fax Second Edition Nov Mail Willy .Chen @ mic.com.tw