Manuals
/
MiTAC
/
Computer Equipment
/
Laptop
MiTAC
7521 PLUS/N service manual Special Feature Function, 7521Plus / N N/B MAINTENANCE
Models:
7521 PLUS/N
1
38
180
180
Download
180 pages
51.44 Kb
35
36
37
38
39
40
41
42
<
>
Troubleshooting
Specifications
Install
Parts list
Error codes
System Block Diagram
Dimension
Maintenance
J1 RJ-11 phone jack for internal modem J23 MDC jump wire connector
Symptom
Page 38
Image 38
7521Plus / N N/B MAINTENANCE
1.3
Special Feature Function
1.3.1
Hot Key Function
1.3.2 Easy Start Button function
37
Page 37
Page 39
Page 38
Image 38
Page 37
Page 39
Contents
7521 Plus/N
SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFOR
TESTING TECHNOLOGY DEPARTMENT // TSSCTSSC
BY: Richard Wang
7521Plus / N N/B MAINTENANCE
CONTENTS
11. 7521 Plus/N Schematics
7521Plus / N N/B MAINTENANCE
CONTENTS
7521Plus / N N/B MAINTENANCE
1. Hardware Engineering Specification
1.1 Introduction
7521Plus / N N/B MAINTENANCE
1.2 Hardware System
1.2.1 System parts
1.2.3 Synthesizer
7521Plus / N N/B MAINTENANCE
1.2.2 CPU MODULE
1.2.4 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP
7521Plus / N N/B MAINTENANCE
SiS630S Features
7521Plus / N N/B MAINTENANCE
Integrated DRAM Controller
Virtual PCI-to-PCI Bridge
7521Plus / N N/B MAINTENANCE
Fast PCI IDE Master/Slave Controller
7521Plus / N N/B MAINTENANCE
Supports High Quality Dithering Supports Bump Mapping
7521Plus / N N/B MAINTENANCE
Built-In 64x64x2 Bit-Mapped Hardware Cursor
7521Plus / N N/B MAINTENANCE
Built-in Reference Voltage Generator and Monitor Sense Circuit
Low Pin Count Interface
7521Plus / N N/B MAINTENANCE
Advanced PCI H/W Audio & Modem Advanced Power Management
Integrated DMA Controller
Three 8254 Compatible Programmable 16-bits counters
7521Plus / N N/B MAINTENANCE
Integrated Interrupt Controller
Integrated Keyboard Controller
Universal Serial Bus Host Controller
7521Plus / N N/B MAINTENANCE
NAND Tree for Ball Connectivity Testing 672-Balls BGA Package
I²C Bus/SMBus Series Interface
7521Plus / N N/B MAINTENANCE
1.2.5 Super IO NS PC 97338VJG
7521Plus / N N/B MAINTENANCE
1.2.6 PC CARD interface controller TI1225
1.2.8 Keyboard system H8 3434F universal keyboard controller
7521Plus / N N/B MAINTENANCE
1.2.7 DUAL-SLOT PC CARD POWER INTERFACE SWITCH TPS2206
Memory
8-bit timer 2 channels
7521Plus / N N/B MAINTENANCE
16-bit free-running timer
PWM timer 2 channels
Cover switch Battery charging control Smart Battery monitoring
7521Plus / N N/B MAINTENANCE
Power-down modes
Fan control and LED indicator serial interface 100pin TQFP
1.2.9.1 System BIOS and Software Features Overview
7521Plus / N N/B MAINTENANCE
1.2.9 System BIOS
7521Plus / N N/B MAINTENANCE
1.2.9.2 BIOS Setup Feature Introduction
ACPI Power States
7521Plus / N N/B MAINTENANCE
1.2.10 POWER MANAGEMENT
Summary of Global Power States
System States 1. Working S0
7521Plus / N N/B MAINTENANCE
Summary of Device Power Sates
2.Sleeping State S3
4.Soft Off State S5
7521Plus / N N/B MAINTENANCE
3.Hibernation S4
5.Mechanical Off
7521Plus / N N/B MAINTENANCE
Component Level Power Management Matrix
APM Concept
7521Plus / N N/B MAINTENANCE
Power State 1.Full Power
2. Idle
7521Plus / N N/B MAINTENANCE
4.Suspend
5. Off
7521Plus / N N/B MAINTENANCE
Component Level Power Management Matrix
7521Plus / N N/B MAINTENANCE
1.2.11 Memory System
7521Plus / N N/B MAINTENANCE
1.2.12 Interface
7521Plus / N N/B MAINTENANCE
1.2.13 Audio System AC’97 CODEC CS4299
7521Plus / N N/B MAINTENANCE
1.2.14 IR MODULE HSDL-3600#007
7521Plus / N N/B MAINTENANCE
7521Plus / N N/B MAINTENANCE
SiS900 Features
Supports PC97, PC98, and Net PC requirements - Green PC compatible
7521Plus / N N/B MAINTENANCE
Additional features
1.2.16 CH7005C Digital PC to TV Encoder
7521Plus / N N/B MAINTENANCE
CH7005 Features
1.3.1 Hot Key Function 1.3.2 Easy Start Button function
1.3 Special Feature Function
7521Plus / N N/B MAINTENANCE
1.3.4 LED Indicators
7521Plus / N N/B MAINTENANCE
1.3.3 Flash ROM BIOS
1.3.5 COM port assignment
1.4 SMM and System BIOS
7521Plus / N N/B MAINTENANCE
Battery Warning
7521Plus / N N/B MAINTENANCE
HDD & Video access
Suspend to DRAM
Battery Warning State
7521Plus / N N/B MAINTENANCE
Cover Switch
Battery Low State
LCD Panel
1.5 Peripheral Components
7521Plus / N N/B MAINTENANCE
Hard Disk Drive
Floppy Disk Drive
7521Plus / N N/B MAINTENANCE
Keyboard
24X CD-ROM Drive
7521Plus / N N/B MAINTENANCE
Touch Pad
CD-R/RW drive
7521Plus / N N/B MAINTENANCE
DVD-ROM drive
CMOS Battery
7521Plus / N N/B MAINTENANCE
LED Indicators
IO port
PCMCIA Socket
7521Plus / N N/B MAINTENANCE
Serial Interface
Operating temperature -10 - +70 degree C Weight 7g
7521Plus / N N/B MAINTENANCE
Dimension 25mmx25mmx10mm±0.5mm
Rated power 0.6 W Static pressure 0.09 inch-H2O
GPI DEFINITIONS
1.6 Appendix 1 GPIO definitions
7521Plus / N N/B MAINTENANCE
Note 1. LCD ID
7521Plus / N N/B MAINTENANCE
Note 3. CPU & SDRAM Frequency setting table
7521Plus / N N/B MAINTENANCE
2 System View and Disassembly
2.0 Tools introduction
1.Minus screw driver with bit size 3mm for CPU assembly & disassembly
2 System View and Disassembly
2.1 System View
7521Plus / N N/B MAINTENANCE
2.1.1 Front View
n Power Connector o PS/2 Port
7521Plus / N N/B MAINTENANCE
n Battery Pack o CD-ROM/DVD-ROM Drive p IR Port
s RJ-45 Connector t VGA Port
2.1.5 Bottom View
7521Plus / N N/B MAINTENANCE
n CPU Cover o Modem Card Cover p FDD/HDD Module q Battery Pack
2.1.6 Top-Open View
Modular Components NOTEBOOK LCD Assembly Components
2.2 System Disassembly
7521Plus / N N/B MAINTENANCE
2.2.1 Battery Pack 2.2.2 CPU 2.2.3 Modem Card 2.2.4 FDD/HDD Module
Reassembly
7521Plus / N N/B MAINTENANCE
2.2.1 Battery Pack Disassembly
7521Plus / N N/B MAINTENANCE
2.2.2 CPU Disassembly
7521Plus / N N/B MAINTENANCE
3. Replace the CPU compartment cover and secure with two screws
7521Plus / N N/B MAINTENANCE
2.2.3 Modem Card Disassembly
7521Plus / N N/B MAINTENANCE
3. Replace the compartment cover and secure with one screw
7521Plus / N N/B MAINTENANCE
2.2.4 FDD/HDD Module Disassembly
7521Plus / N N/B MAINTENANCE
3. To take the hard disk drive apart, remove two screws of the hard disk. Then lift the hard disk up and unplug the connector to remove it. figure
7521Plus / N N/B MAINTENANCE
2.2.5 CD-ROM Drive Disassembly
7521Plus / N N/B MAINTENANCE
6. Hold the CD-ROM drive and slide it outward carefully. figure
7521Plus / N N/B MAINTENANCE
1. Open the top cover
7521Plus / N N/B MAINTENANCE
1. Remove the keyboard to access the SO-DIMM sockets. See section 2.2.6 Disassembly
7521Plus / N N/B MAINTENANCE
2.2.8 LCD Assembly Disassembly
3. Replace the two hinge covers 4. Replace the Easy Start panel
7521Plus / N N/B MAINTENANCE
2. Reconnect the LCD cable connectors to the system board
7521Plus / N N/B MAINTENANCE
1. Remove the LCD assembly. See section 2.2.8 Disassembly
7521Plus / N N/B MAINTENANCE
1. Fit the inverter board back into place and secure with two screws
7521Plus / N N/B MAINTENANCE
2.2.11 System Board Disassembly
7521Plus / N N/B MAINTENANCE
7. Lift up the speaker assembly and disconnect the cable. figure
7521Plus / N N/B MAINTENANCE
8. Remove four screws to take the recharge board apart. figure
7521Plus / N N/B MAINTENANCE
6. Replace the base unit frame and secure with twelve screws
7521Plus / N N/B MAINTENANCE
1. Remove the system board. See section 2.2.11 Disassembly
7521Plus / N N/B MAINTENANCE
3. Definition & Location Of Connectors / Switches
3.1 Mother Board-A
J1 Inverter BD CONN J2 LCD panel LVDS connector
3. Definition & Location Of Connectors / Switches
3.2 Mother Board Switch Table
7521Plus / N N/B MAINTENANCE
SW3. CPU & SDRAM Frequency setting table
3. Definition & Location Of Connectors / Switches
3.3 Mother Board-B
7521Plus / N N/B MAINTENANCE
PJ501 Power jack AC adapter
3. Definition & Location Of Connectors / Switches
3.4 Daughter Board
7521Plus / N N/B MAINTENANCE
J1 RJ-11 phone jack for internal modem J23 MDC jump wire connector
3. Definition & Location Of Connectors / Switches
3.5 Charger Board
7521Plus / N N/B MAINTENANCE
J1Charger & Touch-Pad connector to M/B. PJ4Battery pack connector
Easy Start Button Boardside B
3.6 IQSB Board
3.7 Easy Start Button Board Easy Start Button Boardside A
7521Plus / N N/B MAINTENANCE
7521Plus / N N/B MAINTENANCE
4. Definition & Location Of Major Components
4.1 Main Board Side A
U13 TPS2206 PCcard Power switch matrix
4. Definition & Location Of Major Components
4.2 Main Board SIDE B
7521Plus / N N/B MAINTENANCE
U502 PH163112 LAN Controller U503 Socket 370 CPU
7521Plus / N N/B MAINTENANCE
5. Pin Descriptions Of Major Components
5.1 Pentium III/Celeron FC-PGA2 CPU
Alphabetical Signal Reference
Signal Name
7521Plus / N N/B MAINTENANCE
Alphabetical Signal Reference
Signal Name
Signal Name
7521Plus / N N/B MAINTENANCE
Alphabetical Signal Reference
Signal Description
PWRGOOD Relationship at Power On
7521Plus / N N/B MAINTENANCE
Alphabetical Signal Reference
PWRGOOD Relationship at Power On
Signal Name
7521Plus / N N/B MAINTENANCE
PWRGOOD Relationship at Power On
Signal Description
Signal Name
7521Plus / N N/B MAINTENANCE
PWRGOOD Relationship at Power On
Signal Description
Power
5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset
7521Plus / N N/B MAINTENANCE
Power
5. Pin Descriptions Of Major Components
7521Plus / N N/B MAINTENANCE
Power
5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset
5. Pin Descriptions Of Major Components
7521Plus / N N/B MAINTENANCE
Power
5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset
Power
7521Plus / N N/B MAINTENANCE
Power management Interface
5. Pin Descriptions Of Major Components
5. Pin Descriptions Of Major Components
7521Plus / N N/B MAINTENANCE
Power management Interface
5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset
5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset
7521Plus / N N/B MAINTENANCE
5. Pin Descriptions Of Major Components
RTC Interface
Legacy I/o and Miscellaneous Signals
7521Plus / N N/B MAINTENANCE
Power andGroundSignals
Power
U2 SH5
6. System Block Diagram
7521Plus / N N/B MAINTENANCE
7.1 Introduction
7. Maintenance Diagnostics
7521Plus / N N/B MAINTENANCE
PIO PORT
SYSTEM SOFT BIOS
7521Plus / N N/B MAINTENANCE
7. Maintenance Diagnostics
SYSTEM SOFT BIOS
7521Plus / N N/B MAINTENANCE
7. Maintenance Diagnostics
CODE
PIO CONNECTOR
7521Plus / N N/B MAINTENANCE
7. Maintenance Diagnostics
OR P/N411904800001
8.4 EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROR
8. TROUBLE SHOOTING
8.1 NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY
8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR
1. Check AC Adaptor 2. Check OUTLET. 3.Check Charge B’D
8.1 NO POWER
7521Plus / N N/B MAINTENANCE
OUTLET
POWER IN
7521Plus / N N/B MAINTENANCE
8.1 NO POWER
+S5V
Symptom
7521Plus / N N/B MAINTENANCE
8.1 NO POWER
POWER IN
Symptom
7521Plus / N N/B MAINTENANCE
8.1 NO POWER
No power
Symptom
7521Plus / N N/B MAINTENANCE
8.1 NO POWER
2. Check the power source from AC adapter. PJ501
1. Check if power system is O.K
8.2 NO DISPLAY
7521Plus / N N/B MAINTENANCE
Reboot and display OK?
System Clock Check
7521Plus / N N/B MAINTENANCE
8.2 NO DISPLAY
U505SH14 TI1225 PCMCIA
7521 Power Module
7521Plus / N N/B MAINTENANCE
Power Good & Reset System
8.2 NO DISPLAY
7521Plus / N N/B MAINTENANCE
SIS 630S
8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY
There is no display or picture abnormal on LCD
There is no display or picture abnormal on LCD
7521Plus / N N/B MAINTENANCE
8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY
VGA CONTROLLER FAILURE
7521Plus / N N/B MAINTENANCE
U24 SIS 630S
8.4 EXTERNAL MONITOR NO DISPLAY
There is no display or picture abnormal on CRT monitor
There is no display or picture abnormal on CRT monitor
7521Plus / N N/B MAINTENANCE
8.4 EXTERNAL MONITOR NO DISPLAY
VGA CONTROLLER FAILURE
Either on board or extend SDRAM is failure or system hangs up
8.5 MEMORY TEST ERROR
7521Plus / N N/B MAINTENANCE
Clock Synthesizer
Either on board or extend SDRAM is failure or system hangs up
7521Plus / N N/B MAINTENANCE
8.5 MEMORY TEST ERROR
Correct it
Error message of keyboard failure is shown or any key doesn’t work
7521Plus / N N/B MAINTENANCE
8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR
SIS 630S
Troubleshooting
7521Plus / N N/B MAINTENANCE
8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR
Replace M/B or
An error message is shown when reading data from CD-ROM drive
8.7 CD-ROM DRIVE TEST ERROR
7521Plus / N N/B MAINTENANCE
630S
An error message is shown when reading data from CD-ROM drive
7521Plus / N N/B MAINTENANCE
8.7 CD-ROM DRIVE TEST ERROR
Replace M/B or into board-level Troubleshooting
630S
8.8 HARD DRIVE TEST ERROR
7521Plus / N N/B MAINTENANCE
+5VSHDD
Replace mother BD or into board-level Troubleshooting
7521Plus / N N/B MAINTENANCE
8.8 HARD DRIVE TEST ERROR
Parts
An error occurs when a USB I/O device is installed
8.9 USB PORT TEST ERROR
7521Plus / N N/B MAINTENANCE
U24 SIS 630S
An error occurs when a USB I/O device is installed
7521Plus / N N/B MAINTENANCE
8.9 USB PORT TEST ERROR
Board-level Troubleshooting for USB test error
7521Plus / N N/B MAINTENANCE
8.10 AUDIO FAILURE
SIS 630S
No sound from speaker after audio driver is installed
8.10 AUDIO FAILURE
7521Plus / N N/B MAINTENANCE
No sound from speaker after audio driver is installed
AUDIO OUT
Troubleshooting for
7521Plus / N N/B MAINTENANCE
No sound from speaker after audio driver is installed
audio test error
An error occurs when a mouse or other I/O device is installed
8.11 SIO PORT TEST ERROR
7521Plus / N N/B MAINTENANCE
SUPER I/O
An error occurs when a mouse or other I/O device is installed
7521Plus / N N/B MAINTENANCE
8.11 SIO PORT TEST ERROR
Board-level Troubleshooting for SIO test error
When a print command is issued, printer prints nothing or garbage
8.12 PIO PORT TEST ERROR
7521Plus / N N/B MAINTENANCE
LO OPBACK CONNECTOR FOR PIO TEST
When a print command is issued, printer prints nothing or garbage
7521Plus / N N/B MAINTENANCE
8.12 PIO PORT TEST ERROR
Board-level Troubleshooting for PIO test error
An error occurs when a PC card device is installed
8.13 PC-CARD SOCKET FAILURE
7521Plus / N N/B MAINTENANCE
AD031 C/BE03 PAR TRDY# IRDY# RESET# SERR# PERR# STOP# DEVSEL# FRAME#
Change M/B or go into board-level Troubleshooting
7521Plus / N N/B MAINTENANCE
An error occurs when a PC card device is installed
Board-level Troubleshooting for PC CARD test error
Part Number
9. SPARE PARTS LIST-1
7521Plus / N N/B MAINTENANCE
Description
Part Number
9. SPARE PARTS LIST-2
7521Plus / N N/B MAINTENANCE
Description
Part Number
9. SPARE PARTS LIST-3
7521Plus / N N/B MAINTENANCE
Description
Part Number
9. SPARE PARTS LIST-4
7521Plus / N N/B MAINTENANCE
Description
Part Number
9. SPARE PARTS LIST-5
7521Plus / N N/B MAINTENANCE
Description
Part Number
9. SPARE PARTS LIST-6
7521Plus / N N/B MAINTENANCE
Description
Part Number
9. SPARE PARTS LIST-7
7521Plus / N N/B MAINTENANCE
Description
Part Number
9. SPARE PARTS LIST-8
7521Plus / N N/B MAINTENANCE
Description
Part Number
9. SPARE PARTS LIST-9
7521Plus / N N/B MAINTENANCE
Description
Page
DRAWN
ISSUES
7521 plus R02
DESIGN CHECK
C P U
CELERON PPGA 370-PIN SOCKET
630S-1
630S-2
630S-5 VSS30
Page
630S-4
VSSA VSSB VSSC VSSD
Never
Default mount R48 if TV function required
Test only
mount even
CLOCK SYNTHESIZER AND DRIVER
144 PIN SODIMM SOCKET
CLOSE TO RECEIVER
2M X 16 BITS X 4 BANK X 4 = 64M BYTES
GND1
GND2
00110001
IDSELAD20
Slave address
0603B
PRIMARY IDE & FDD CONNECTOR
SECONDARY IDE CONNECTOR
MULTIFUNCTION PIN
CONTENTS -- 64H
IDSEL AD19
SERIAL IRQ/PARALLEL PCI INTERRUPT
POWER SWITCH MATRIX
PCCARD SOCKET
DVSS1 DVSS2
AVSS1 AVSS2
RLINE IN
GND1
VCC3
GND0
GND2
HP FIR MODULE HSDL-3600#007
SUPER I/O
RS232/SIO
VSS1 VSS2 VSS3 VSS4
VCC1 VCC2
AVCC VCCB
AVSS
USB CONNECTOR
SYSTEM BIOS
Slave Address
RESET#
Charger board connector
PREQ# PULL UP AT CPU
7521 plusADINP & DISCHARGE
16.65V
ABCDE
16.60V
16.70V
7521 plus S5VS3VS12V
SENSE1
7521 plus 1.5V/1.8V
SENSE1+
SENSE2+
7521 plus+5V+3V+12VS1.8V2.5V
7521 plusCPU PWR
DRAWN
ISSUES
7521P HDD/FDD BD
DESIGN
DRAWN DESIGN CHECK ISSUES
DESIGN
ISSUES
DRAWN
CHECK
54554
DRAWN DESIGN CHECK ISSUES
1+60
9424
=904=
DRAWN DESIGN CHECK ISSUES
0-= -4$+1,511
Sponsoring Editor Shoestring Tsai Author Richard.Wang
SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFOR
75217521Plulus/Ns/N
Assistant Editor Kelly Chiang Publisher MITAC INTERNATIONAL CORP