External Monitor No Display, J503 | MiTAC 8355 manual

8355 N/B MAINTENANCE

8.5 External Monitor No Display

Symptom:

The CRT monitor shows nothing or abnormal color, but it is OK for LCD.

P5

U506

North Bridge

VT8385

U9 P6

ICS950403

AGP_AD[0:31]

AGP_SBA[0:7]

P7

J503

AGP_CBE[0:3]

Q1

L31

FDV301N

CRT_HSYNC

120Z/100M

AGP_ST[0:2]

AGP_ADSTB[0:1]

Q2

L32

CRT_VSYNC

FDV301N

120Z/100M

AGP_ADSTB[0:1]#

Q3

L33

FDV301N

AGP_RESET#

CRT_DDCK

120Z/100M

U16

AGP_REQ#

Q502

L30

FDV301N

CRT_DDDA

120Z/100M

AGP_GNT#

AGP_PAR

ATI M10

R505

R508

+3V

+5V

4.7K

4.7K

AGP_STOP#

AGP_DEVSEL#

AGP_TRDY#

L34

AGP_IRDY#

CRT_RED

120Z/100M

AGP_FRAME#

L35

CRT_GREEN

120Z/100M

AGP_WBF#

L36

AGP_RBF#

CRT_BLUE

120Z/100M

1

2

3

4

4

3

2

1

R91

22

66M_AGP

RP516

CP502

C211

75*4

8

7

6

5

22P*4

22P

X1

X2

R404

C291

5

6

7

8

0

22P

R403

R139

X3

C290

0

1M

27MHz

22P

P11

ANALOGANALOG

CRTCRT

DISPLAYDISPLAY

134

Image 135

MiTAC 8355 service manual External Monitor No Display, J503

Contents

8355 Contents 8355 N/B Maintenance Trouble Shooting ……………………………………………………………………………………… Audio Failure ………….…………………………………………………………………………………………… Introduction Hardware Engineering Specification 8355 N/B Maintenance CPU System Hardware Part Integrated Memory Controller CPU ClawHammer ProcessorCompatible with Existing 32-bit Code Base AMD x86-64 Technology Way Associative ECC-Protected L2 Cache Power ManagementHyperTransport. Technology to I/O Devices Kbyte 2-way Associative ECC-Protected L1 Data Cache Power Supplies Electrical InterfacesPackaging Recommended Application System frequencySystem frequency synthesizerICS950402 Programmable Timing Control Hub AMD-K8 processor Features VIA K8T800+VT8235 3.1 K8T800High Performance K8 CPU Interface Full Featured Accelerated Graphics Port AGP 8x Controller 8355 N/B Maintenance 3.2 VT8235 8355 N/B Maintenance Smartshader Advanced Shader Technology General Description Dual Display Support High Performance Memory 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 Compatibility Operating System Compatibility Modulation DTE interface Dtmf Tone Frequency Error CorrectionDtmf signal level Data Compression High group 10+/-2dBm Low group 12+/-2dBm Transmit Level 7 VT6307L PCI 1394a Integrated Host Controller OverviewIntegrated 400 Mbit 2-Port PHY 8355 N/B Maintenance Embedded CONTROLLER-H8 Main Features Timer MemoryInterface Ports Converter Wait control Power-down modesOther features Interrupts Features System Flash Memory Bios Memory System64MB, 128MB, 256MB, 512MB x64 200-Pin DDR Sdram SODIMMs 11 VT6103 Fast Ethernet 10/100 1-PORT PHY/TRANSCEIVER 3V operation with 5V tolerant Cardbus/MediaReader Controller Pin Lqfp / 209-ball Lfbga package for CB710 PCI Interface CardBus InterfaceSmart Card Interface Memory Stick Interface Secure Digital Interface SmartMedia Interface Interrupt configurationPower Management Control Logic Stick interface Misc Control Logic Supports Zoomed Video port Power Switch Interface Outstanding Features SuperI/O-PC87393General Description 8355 N/B Maintenance Keys Feature Meaning Combination Other FunctionsHot Key Function Acpi mode Power ON/OFF/Suspend/Resume ButtonCover Switch APM mode Fan power on/off management LED Indicators 7 I/O Port Cmos Battery Mini PCI type III BBattery current limit and learning ROM Drive Peripheral Components Doze Mode Power ManagementSystem Management Mode Full on mode Suspend to HDD Suspend to Dram HDD & Video Access Other Power Management Functions Appendix 1 VT 8235 Gpio Definition To the previous table Shadowed block is the selected function Appendix 2 H8 Pins Definition Charging KB OUT8 Ilimit ↑ Pull High ↓ Pull Low →3V Level shift CPU Appendix 3 8355 product spec AC adapter FCC, CE, UL, TUV, CB, Bsmi Left-side View System View and DisassemblySystem View Front View Rear View Right-side View Top View Bottom View System Disassembly DDR Sdram Battery Pack DisassemblyReassembly Remove three screws Keyboard Slide out the keyboard cover Disconnect the cable from system board. Figure Remove four screws 3 CPU Disconnect the fan’s cord 11 Remove HDD compartment HDD Module 13 slide out the hard disk drive 15 Remove the CD/DVD -ROM drive 5 CD/DVD-ROM Drive 16 Remove the SO-DIMM SO-DIMM 17 Remove two screws LCD Assembly 19 Remove the hinge cover 21 Remove the LCD assembly 22 Unscrew four screws Inverter Board 8355 N/B Maintenance 24 Separate the LCD panel LCD Panel 8355 N/B Maintenance 26 Unscrew nine screws System Board 28 Remove the top cover Unscrew one screw and disconnect fan’s cord. Figure Reassembly 32 Remove the modem card Modem Card 33 Free the touch pad Touch Pad 8355 N/B Maintenance Main Board Side a Definition & Location of Connectors / Switches VR1 Volume Controller Definition & Location of Connectors/ Switches Main Board Side B Definition & Location of Major Components U517 TPA0202 Audio Amplifier U518 CMI9738 Audio Codec DDR Sdram Memory Interface Continue Pin Descriptions of Major ComponentsAMD Athlontm 64 Processor-1 DDR Sdram Memory Interface Miscellaneous AMD Athlontm 64 Processor-2HyperTransport Technology Debug K8T800MVT8385 North Bridge-1 Hyper Transport transmit InterfaceHyper Transport Receive Interface AGP Bus Interface K8T800MVT8385 North Bridge-2Hyper Transport Control Link Interface Girdy GIRDY# K8T800MVT8385 North Bridge-3 K8T800MVT8385 North Bridge-4 Clock, Reset, Power Control and Test VT8235 South Bridge-1 Advanced Programmable Interrupt Controller APICInterfaceStraps CPU Interface VT8235 South Bridge-2CPU Speed Control Interface Low Pin Count LPCInterface VT8235 South Bridge-3 PCI Bus InterfacePCI Bus Interface Continue Universal Serial Bus 2.0 Interface VT8235 South Bridge-4LAN Controller -Media Independent Interface MII General Purpose I/O Serial IRQ VT8235 South Bridge-5UltraDMA-133 /100 /66 /33 Enhanced IDE Interface UltraDMA-133 /100 /66 /33 Enhanced IDE Interface Continue General Purpose Inputs Continue Resets,Clocks,and Power StatusVT8235 South Bridge-6 General Purpose Inputs Power Management and Event Detection Power Management and Event Detection ContinueVT8235 South Bridge-7 AC97 Audio /Modem Interface Power and GroundVT8235 South Bridge-8 Internal Keyboard Controller System Management Bus SMBInterface I 2 CBus Power and Ground ContinueISA Subset /Parallel Bios ROM Interface VT8235 South Bridge-9 System Block Diagram U503U506 Maintenance Diagnostics Code Post Routine Description Error Codes 118 Debug Tool Diagnostic Tool for Mini PCI Slot Diagnostic Tool for PIO Port Trouble Shooting +1.25VSREFMEM No Power +1.2VLDTA Agpvddq PJ502 No power Adinp Battery Can not Be Charged Battery can not Charge System Clock Check No Display No Display System Failure Reset Circuit Checking1 No Display System Failure Reset Circuit Checking2 No Display Parts Signals U9 P6 AGP Controller Failure LCD No Display Charge BD J2,J3 are cold colder? AGP Controller Failure J503 External Monitor No Display Display Yes OK? Replace faulty monitor Symptom The extend DDR RAM is failure or system hangs up Memory Test Error Parts Memory Test Error Key Board Controller Keyboard K/B Touch-Pad T/P Test Error Test Yes Ok? Replace the faulty Keyboard or Touch-Pad Keyboard or Touch-Pad Test Error Hard Disk Driver Test Error Hard Driver Test Error Hard Disk Driver Test Error J530 CD-ROM Driver Test Error CD-ROM Driver Test Error Symptom An error occurs when a USB I/O device is installed USB Test Error U501 PartsSignals USB Test Error PC-Card Socket Failure Symptom An error occurs when a PC card device is installed PC Card Test Error Memory-Card Socket Failure Memory-Card Socket Failure Memory Card Test Error Symptom An error occurs when IEEE1394 device is installed IEEE1394 Test Error Test Error Symptom An error occurs when LAN device is installed LAN Test Error Correct it LAN Test Error Input Of Audio Subsystem Audio Failure Output Of Audio Subsystem Audio Drive Failure Part Number Description LocationS Spare Part List-1 Spare Part List-2 CFM-BATFUSE Thermal 98C Spare Part List-3 DIODEBAV70LT1,70V,225MW,SOT-23 Spare Part List-4 DVD Combo DRIVE8X24X10X24X,SBW Spare Part List-5 ICEM6A9320BI-3.6M,DDR SDRAM,4MX Spare Part List-6 ICVT8235,SOUTH BRIDGE,BGA,487P Spare Part List-7 Spare Part List-8 LABELSOFTWARE,INSYDE BIOS-M RELAYREED,200V,.5A,NORMAL Open SW1 Spare Part List-9 RES2M Spare Part List-10 RP7,RP8 Spare Part List-11 RP6,RP9 Spare Part List-12 TRANSDTC144WK,NPN,SOT-23,SMT Spare Part List-13 Spare Part List-14 WIRE#28,UL1061,40MM,BLUE,PRCPage Page Model Corefbh CPURESET# CPURESET# 3,12 DDRRASB#Memresetl CPURESET# VID2 NBLDTRST# CPURESET#VID0 VID1 DIMM-SLOT & Termination K8T400M- VT8385 H8RESET# BATTG# FS0 14MSBIOSCH8RESET# ACPOWER# M10GPIO5 AGPRESET#M10GPIO0 M10GPIO4 ATI M10-P2/4 VMDA0 MEMAMD0 MEMAMD2MEMAMA2 MEMAMD0 VMA2 VMA0VMDA0 VMA0 VMB0 VMDB0 VMDB32 VMA1 VMDA1 VMDA33 PANELID0 PANELID2 PANELID3 CrtinCrtgreen +PANELVDD VT8235 1/3- PCI & USB VT8235 2/3- IDE & AC97 VT8235 3/3- VLINK&LAN HDPDD3 IDEDPDD3 HDPDD4 IDEDPDD0IDEDPDD1 HDPDD2 IDEDPDD2 CAD2 CAD11 CVS1 CARDRESET#POWERONRESET# CAD1 SDWP# SDDATA1 LEDCL190 SDDATA0 Sdclk Sdcmd SDDATA3 SDDATA2 MINIPCIGPORESET#Wirelesspd SDCD# GND SDWP# TPB0P PCIAD4 PCIAD1TPA0N TPA0P LANTX+ LANPHYRESET#LANMRXDV2 PJTX+ AC97SDIND0 Avdd MicvrefMicint Micext AC97SDOUT Spdifout Audiomute AmpmuteDEVICEDECT# DECTHP#/OPT PIOD/INT# LPCSPIORESET# PD6LPCSPIORESET# LPCFRAME# INIT# SCI#/FANSWITCH Tclkd H8RESET#SCI#/FANSWITCH H8WAKEUP# H8ENABKL H8RESET# USBP2P USBOC0# USBOC2#USBOC5# USBOC2# USBP0P SD6 SA6 SA0 SD1 SA1SD2 SA2 PCIGNT#4 SD3 SA3 PCIGNT#5 PCICARDBUSGNT#0 SD4 SA4 PWRONM9 OD3OD5 Pgvcccore +2.5VS&+1.25VS&+1.8V&+1.2V VOSENSE2 +3VS / +5VSDVMAINP2 VOSENSE1 For M10 +1.2V&+1.0V Ilimit AdinpADP1 Batt Battdead Adinp BattLiovp Liovp Charging PVID2 VMAINP3PVID0 PVID1 Reference Material Tel Fax Second Edition Nov Mail Willy .Chen @ mic.com.tw