Plus/N | MiTAC 7521 PLUS/N instruction

SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFOR

7521 Plus/N

BY： Richard Wang

TESTING TECHNOLOGY DEPARTMENT // TSSCTSSC

AUG. 2001

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MiTAC 7521 PLUS/N service manual Plus/N

Contents

Plus/N 7521Plus / N N/B Maintenance Plus/N Schematics System Overview General Description Hardware System 4 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP SynthesizerSingle Chipset SiS630S Features Integrated Dram Controller Fast PCI IDE Master/Slave Controller 7521Plus / N N/B Maintenance 7521Plus / N N/B Maintenance 7521Plus / N N/B Maintenance Low Pin Count Interface Advanced PCI H/W Audio & Modem Advanced Power ManagementIntegrated DMA Controller Three 8254 Compatible Programmable 16-bits counters Integrated Interrupt ControllerIntegrated Keyboard Controller Integrated Real Time Clock RTC with 256B Cmos Sram Universal Serial Bus Host Controller COM2 Super IO NS PC 97338VJG PC Card interface controller TI1225 Memory Keyboard system H8 3434F universal keyboard controller Bit timer 2 channels Bit free-running timerPWM timer 2 channels Host interface HIF Interrupts Power-down modes System Bios and Software Features Overview System Bios Bios Setup Feature Introduction Summary of Global Power States Acpi Power StatesConcept System States Working S0 Summary of Device Power SatesSleeping State S3 Soft Off State S5 Hibernation S4 Mechanical Off Component Level Power Management Matrix Idle Power State 1.Full PowerStandby Suspend Off Memory System Interface Modem CD-ROM Audio System AC’97 Codec CS4299 IR Module HSDL-3600#007 7521Plus / N N/B Maintenance SiS900 Features Additional features 16 CH7005C Digital PC to TV Encoder CH7005 Features Hot Key Function Easy Start Button function LED Indicators Flash ROM Bios COM port assignment SMM and System Bios Battery Warning HDD & Video accessSuspend to Dram Suspend to HDD Battery Low State Battery Warning StateBattery Dead State Fan power on/off management Hard Disk Drive LCD Panel Floppy Disk Drive Keyboard 24X CD-ROM Drive Touch Pad CD-R/RW drive DVD-ROM drive Cmos Battery LED IndicatorsIO port Pcmcia Socket Serial Interface FAN Appendix 1 Gpio definitions LCDSW4 LCDSW3 LCDSW2 LCDSW1 System View and Disassembly Left-Side View Front View Rear View Right-Side View Top-Open View Bottom View System Disassembly Reassembly Battery Pack Disassembly CPU Disassembly 7521Plus / N N/B Maintenance Modem Card Disassembly 7521Plus / N N/B Maintenance 4 FDD/HDD Module Disassembly 7521Plus / N N/B Maintenance CD-ROM Drive Disassembly Hold the CD-ROM drive and slide it outward carefully. figure Keyboard Disassembly SO-DIMM Disassembly LCD Assembly Disassembly 7521Plus / N N/B Maintenance LCD Panel Disassembly Inverter Board Disassembly System Board Disassembly 7521Plus / N N/B Maintenance Reassembly 7521Plus / N N/B Maintenance Touchpad Disassembly Definition & Location Of Connectors / Switches Mother Board Switch Table Mother Board-B Daughter Board Charger Board Iqsb Board Definition & Location Of Major Components Main Board Side B AERR# ADS#Bclk BERR# BREQ0# BPRI#Clkref Cmosref HIT#, HITM# GHI#IERR# IGNNE# Picclk RESET#PLL1, PLL2 PRDY# Rsvd RSP#Rttimpedp SLP# VID40 HLOCK# CpuclkHIT# HITM# WE# SdclkSRAS# SCAS# DEVSEL# STOP#PLOCK# INTAD# Vgclk VMA11VMA10 Vbhclk Pmdat THERM#GPIO12 Pmclk Auxok ACRESET#Batok OSC32KHI PCIREQ3# CLK48MGPIO0 PCIGNT3# Pcmcia Cardbus System BiosSlots Codec Maintenance Diagnostics System Soft Bios 100 Circuit Diagnostic Tools Trouble Shooting No Power 104 PJ4 Symptom Next Continue There is no display on both LCD and monitor Apicclk System Clock Check SIS U24 112 U24 SIS 630S 114 U24 116 ISA 118 SIS 120 121 122 SIS 124 SIS AC97SYNC AC97SDIN0 127 128 129 130 131 SIS 133 Spare Parts LIST-1 Spare Parts LIST-2 Spare Parts LIST-3 Spare Parts LIST-4 Spare Parts LIST-5 Spare Parts LIST-6 Spare Parts LIST-7 Spare Parts LIST-8 Spare Parts LIST-9 Page GND MTG8MTG14 MTG6 GND MTG9 MTG10 TRDY# RESET#Picclk LINT1/NMI LINT0/INTR PICD1 PICD0 PLL2 PLL1 PRDY# INIT# Gtlrefb GtlrefaVssqa Vssqb INTA# OVDD0 VSS0INTB# INTC# VBCAD/AREQ# Gout AAD0 AAD1 AAD2 AAD3 AAD4 AAD5TXIN0 VCC B4/ACBE2# VCC RESET# GND ACRESET#SPK LAD0 PSON# LAD1 Cvbs VDDXclk Csync CPUCLK1 Vddsdr CPUCLK2 Vddref CPUCLK0Vddsdr FS1/PCICLK0 Vddsdr FS2/PCICLK1 PIN Sodimm Socket CLK VDD0 MAB#0CKE VDD1 VDD2 RAS VSS0 GND2 GND1 RST# SdatVSS GP17/INT GP26/INT Primary IDE & FDD Connector Idsel AD19 GND4 GND2 GND3 GND1GND7 GND5 GND8 GND6 AUX/L OUT0 IN0 OUT1 IN1 Nrerr GndsdBpcfg AUX/R FLT3D LINE/OUT/L LED Pciclk SMEMW# LFRAM#PCIRST# SMEMR# Serirq REFRESH# SIN1 X1CLKINBOUT1/SOUT1 AEN RTS1#/BADDR0 5VTAP Sense OUT ERR Shutdn GND RESET# GNDP40/TMCI0 MD1 PB0/XDB0 CLR CLKGND VCC CE# VPPOE# VSS WE# ERR Shutdn GND 5VTAP Sense OUT Charger board connector OUT GND0 RS+ VCC PQ20A NDC7002NNA Outputctrl DTC Feedback Shdn + Sync VL Reset12OUT BST3 BST5 SENSE1+ TG1 RUN/SS1 FltcplSENSE1 SW1 VOSENSE1 BOOST1 Plus+5V+3V+12VS1.8V2.5V Shdn Pgnd VCC BSTFBS Gnds 7521P HDD/FDD BD QSB0# KI1 QSB1# KI2 QSB2# KI3 QSB3# KI4 QSB4# KI5 Swgnd KO0 R0A Remove the reserved circuit R01 Relayout base on R0A REV Description of Change ECR 75217521Plulus/Ns/N