75217521Plulus/Ns/N | MiTAC 7521 PLUS/N manual

SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFOR

75217521Plulus/Ns/N

Sponsoring Editor : Shoestring Tsai

Author : Richard.Wang

Assistant Editor : Kelly Chiang

Publisher : MITAC INTERNATIONAL CORP.

Address : 4F, NO.18, PU-DING ROAD, HSINCHU, TAIWAN, R.O.C.

TEL : 886-3- 5645850 Fax : 886-3- 5781245

First Edition : Aug. 2001

E-mail : Jesse.Jan @ mic.com.tw

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MiTAC 7521 PLUS/N service manual 75217521Plulus/Ns/N

Contents

Plus/N 7521Plus / N N/B Maintenance Plus/N Schematics General Description System Overview Hardware System Synthesizer 4 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGPSingle 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 Advanced PCI H/W Audio & Modem Advanced Power Management Low Pin Count InterfaceIntegrated DMA Controller Integrated Interrupt Controller Three 8254 Compatible Programmable 16-bits countersIntegrated Keyboard Controller Integrated Real Time Clock RTC with 256B Cmos Sram Universal Serial Bus Host Controller Super IO NS PC 97338VJG COM2 PC Card interface controller TI1225 Keyboard system H8 3434F universal keyboard controller Memory Bit free-running timer Bit timer 2 channelsPWM timer 2 channels Host interface HIF Power-down modes Interrupts System Bios System Bios and Software Features Overview Bios Setup Feature Introduction Acpi Power States Summary of Global Power StatesConcept Summary of Device Power Sates System States Working S0Sleeping State S3 Hibernation S4 Soft Off State S5 Component Level Power Management Matrix Mechanical Off Power State 1.Full Power IdleStandby Suspend Off Memory System Interface Audio System AC’97 Codec CS4299 Modem CD-ROM IR Module HSDL-3600#007 7521Plus / N N/B Maintenance SiS900 Features Additional features CH7005 Features 16 CH7005C Digital PC to TV Encoder Hot Key Function Easy Start Button function Flash ROM Bios LED Indicators SMM and System Bios COM port assignment HDD & Video access Battery WarningSuspend to Dram Suspend to HDD Battery Warning State Battery Low StateBattery Dead State Fan power on/off management LCD Panel Hard Disk Drive Keyboard Floppy Disk Drive Touch Pad 24X CD-ROM Drive DVD-ROM drive CD-R/RW drive LED Indicators Cmos BatteryIO port Serial Interface Pcmcia Socket FAN Appendix 1 Gpio definitions LCDSW4 LCDSW3 LCDSW2 LCDSW1 System View and Disassembly Front View Left-Side View Right-Side View Rear View Bottom View Top-Open View System Disassembly Battery Pack Disassembly Reassembly 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 ADS# AERR#Bclk BERR# BPRI# BREQ0#Clkref Cmosref GHI# HIT#, HITM#IERR# IGNNE# RESET# PicclkPLL1, PLL2 PRDY# RSP# RsvdRttimpedp SLP# VID40 Cpuclk HLOCK#HIT# HITM# Sdclk WE#SRAS# SCAS# STOP# DEVSEL#PLOCK# INTAD# VMA11 VgclkVMA10 Vbhclk THERM# PmdatGPIO12 Pmclk ACRESET# AuxokBatok OSC32KHI CLK48M PCIREQ3#GPIO0 PCIGNT3# System Bios Pcmcia CardbusSlots Codec Maintenance Diagnostics System Soft Bios 100 Diagnostic Tools Circuit Trouble Shooting No Power 104 Symptom PJ4 Next Continue There is no display on both LCD and monitor System Clock Check Apicclk SIS U24 112 U24 SIS 630S 114 U24 116 ISA 118 SIS 120 121 122 SIS 124 SIS AC97SDIN0 AC97SYNC 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 MTG8 GNDMTG14 MTG6 GND MTG9 MTG10 RESET# TRDY#Picclk LINT1/NMI LINT0/INTR PICD1 PICD0 PLL2 PLL1 PRDY# INIT# Gtlrefa GtlrefbVssqa Vssqb OVDD0 VSS0 INTA#INTB# INTC# Gout AAD0 AAD1 AAD2 AAD3 AAD4 AAD5 VBCAD/AREQ#TXIN0 VCC B4/ACBE2# ACRESET# VCC RESET# GNDSPK LAD0 PSON# LAD1 VDD CvbsXclk Csync Vddref CPUCLK0 CPUCLK1 Vddsdr CPUCLK2Vddsdr FS1/PCICLK0 Vddsdr FS2/PCICLK1 PIN Sodimm Socket MAB#0 CLK VDD0CKE VDD1 VDD2 RAS VSS0 GND1 GND2 Sdat RST#VSS GP17/INT GP26/INT Primary IDE & FDD Connector Idsel AD19 GND3 GND1 GND4 GND2GND7 GND5 GND8 GND6 OUT0 IN0 OUT1 IN1 Nrerr Gndsd AUX/LBpcfg AUX/R FLT3D LINE/OUT/L LED LFRAM# Pciclk SMEMW#PCIRST# SMEMR# Serirq REFRESH# X1CLKIN SIN1BOUT1/SOUT1 AEN RTS1#/BADDR0 RESET# GND 5VTAP Sense OUT ERR Shutdn GNDP40/TMCI0 MD1 PB0/XDB0 CLK CLRGND VCC VPP CE#OE# VSS WE# 5VTAP Sense OUT ERR Shutdn GND Charger board connector RS+ VCC OUT GND0 Outputctrl DTC Feedback PQ20A NDC7002NNA Reset Shdn + Sync VL12OUT BST3 BST5 RUN/SS1 Fltcpl SENSE1+ TG1SENSE1 SW1 VOSENSE1 BOOST1 Plus+5V+3V+12VS1.8V2.5V VCC BST Shdn PgndFBS 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