MiTAC 8050QMA Service Manual Download Page 133

Page: 133 / 138

132

50QMA

N/B Maintenance

8.11 LAN Test Error-1

An error occurs when a LAN device is installed.

LAN Test Error

Yes

Test

OK?

Check if BIOS setup is ok.

Re-test

OK?

Board-level

Troubleshooting

Check the following parts for cold solder or one of the following
parts on the mother-board may be defective, use an oscilloscope
to check the following signal or replace the parts one at a time and
test after each replacement.

Parts:

Signals:

1.Check if the driver is installed properly.
2.Check if the notebook connect with the

LAN properly.

Yes

U717
U709
U511
J506
U507
X503
L508
L510
L511
L512
R682
R683
R667
R670

+3V
ICH_PME#
PCI_C/BE#[0..3]
PCIKRUN#
PCI_DEVESEL#
PMDI[0..3]+
PMDI[0..3]-
EECS
EECK
EEDI
EEDO
PCI_SERR#

Correct it.

Replace

Motherboard

MiTac Secret

Confidential Document

Summary of Contents for 8050QMA

Page 1: ...BY ZX Xiao Repair Technology Research Department EDVD Repair Technology Research Department EDVD Jun 2005 R01 SERVICE MANUAL FOR 8050QMA SERVICE MANUAL FOR SERVICE MANUAL FOR 8050QMA 8050QMA...

Page 2: ...ndix 2 W83L950D KBC Pins Definitions 1 7 Appendix 3 8050QMA Product Spec 2 System View and Disassembly 2 1 System View 2 2 Tools Introduction 2 3 System Disassembly 3 Definition Location of Connectors...

Page 3: ...Diagnostics 7 3 Error Codes 8 Trouble Shooting 8 1 No Power 8 2 No Display 8 3 VGA Controller Failure LCD No Display 8 4 External Monitor No Display 8 5 Memory Test Error 8 6 Keyboard K B Touch Pad T...

Page 4: ...3 80 8050QMA 50QMA N B Maintenance N B Maintenance Contents 8 12 PC Card Socket Failure 9 Spare Parts List 10 Reference Material 150 136 134 M iTacSecret ConfidentialDocum ent...

Page 5: ...es easy configuration through CMOS setup which is built in system BIOS software and can be pop up by pressing F2 key at system start up or warm reset System also provides icon LEDs to display system s...

Page 6: ...and 1394a P2000 It is compliant with 1394 Open HCI 1 0 and 1 1 with DMA engine support for high performance data transfer via a 32 bit bus master PCI host bus interface The VT6301S supports 100 200 an...

Page 7: ...advanced operating systems such as Windows ME Windows 2000 and Windows XP to take full advantage of the hardware capabilities Features such as bus mastering IDE Plug and Play Advanced Power Managemen...

Page 8: ...able with combination of optional 128MB 256MB 512MB 1GB P memory Two 200 pin DDR2 400 533 SDRAM Memory Module VGA Control Type I MXM Interface max 25W with 8 cells Vram Priority at launch NV44M 32MB d...

Page 9: ...gh levels of performance in multimedia applications including 3 D graphics video decoding encoding and speech recognition Use Source Synchronous Transfer SST of address and data to improve performance...

Page 10: ...ed Graphics The 915PM MCH integrates a system memory DDR DDR2 controller with two 64 bit wide interfaces Only Double Data Rate DDR DDR2 memory is supported the buffers support DDR SSTL_2 and DDR2 SSTL...

Page 11: ...data Host bus dynamic bus inversion HDINV support 12 deep in order queue Memory System Directly supports to two DDR or DDR2 SDRAM channels 64 bts wide Supports SO DIMMs of the same type e g all DDR o...

Page 12: ...Fast Chip Select mode Supports partial write to memory using Data Mask signal DM Supports high density memory package for DDR or DDR2 type devices PCI Express Interface One x16 16 lanes PCI Express p...

Page 13: ...n supported Bit swapping is supported Lane reversal is not supported 1 2 4 I O Controller Hub Intel ICH6 M The ICH6 provides extensive I O support Functions and capabilities include PCI Express Base S...

Page 14: ...ontroller Integrated LAN controller System Management Bus SMBus Specification Version 2 0 with additional support for I2C devices Supports Audio Codec 97 Revision 2 3 Specification a k a AC 97 Compone...

Page 15: ...fication Revision 1 0 CardBus Interface Compliant with PC Card Standard 8 0 Support Standardized Zoomed Video Register Model Support SPKROUT CAUDIO and RIOUT Secure Digital Interface Compliant with SD...

Page 16: ...rhead Support Traffic LED Light Support Over Current Protection Interrupt Configuration Support Parallel PCI Interrupts Support Parallel IRQ and Parallel PCI Interrupts Support Serialized IRQ and Para...

Page 17: ...20ohm headset audio amplifiers at Front Out and Surr Out built in 14 318M 24 576MHz PLL and PCBEEP generator those can save BOM costs The ALC655 also supports the S PDIF input and output function whi...

Page 18: ...BITCLK input can be consumed Integrated PCBEEP generator to save buzzer Interrupt capability Three analog line level stereo inputs with 5 bit volume control LINE_IN CD AUX High quality differential C...

Page 19: ...manufactures to implement modem functions in PCs at a lower bill of materials BOM while maintaining higher system performance PC TEL has streamlined the traditional modem into the Host Signal Process...

Page 20: ...lly programmable to meet world wide telephone line interface requirements including those described by CTR21 NET4 JATE FCC and various country specific PTT specifications The programmable parameters o...

Page 21: ...ctor High voltage isolation of 4000V Support for Caller ID Compliant with FCC Part68 CTR21 Net4 and JATE Low power standby Low profile SOIC package 16 pins 10x3x1 55mm Low power consumption 10mA 3 3V...

Page 22: ...8Kbps to 14 4Kbps V 22 bis 1 2 bps to 2 4 Kbps V 21 and Bell 103 and 212A 300 to 1200 bps modulation protocol Data Compression ITU T V 42bis MNP Class 5 Error Correction ITU T V 42 LAPM MNP 2 4 Fax I...

Page 23: ...packets asynchronous and isochronous real time The 1394 link core performs arbitration requesting packet generation and checking and bus cycle master operations It also has root node capability and p...

Page 24: ...est handling Ack_tardy processing Firmware Hub for Intel 810 810E 815 815E 815EP 820 840 850 Chipsets Flexible Erase Capability Uniform 4 KByte Sectors Uniform 16 KByte overlay blocks for SST49LF002A...

Page 25: ...peration WP and TBL pins provide hardware write protect for entire chip and or top Boot Block Block Locking Register for all blocks Standard SDP Command Set Data Polling and Toggle Bit for End of Writ...

Page 26: ...sing CK edge DQS edge aligned with data for Reads DQS center aligned with data for Writes Duplicate output strobe RDQS option for x8 configuration DLL to align DQ and DQS transitions with CK Four inte...

Page 27: ...mpedance calibration On die termination ODT General 1 2 11 LAN PHY RTL8100C L The Realtek RTL8100C L is a highly integrated cost effective single chip Fast Ethernet controller that provides 32 bit per...

Page 28: ...rovides motherboards with Wake On LAN WOL functionality The RTL8100C L also supports Analog Auto Power down that is the analog part of the RTL8100C L can be shut down temporarily according to user req...

Page 29: ...standard Supports Wake On LAN function and remote wake up Magic Packet LinkChg and Microsoft wake up frame Supports 4 Wake On LAN WOL signals active high active low positive pulse and negative pulse...

Page 30: ...Keyboard controller architecture consists of a Turbo 51 core controller surrounded by various registers nine general purpose I O port 2k 256 bytes of RAM four timer counters dual serial ports 40K MTP...

Page 31: ...Disk Drive The ICH6 IDE controller features one set of interface signals that can be enabled tri stated or driven low The IDE interfaces of the ICH6 can support several types of data transfers Progra...

Page 32: ...intenance N B Maintenance Ultra ATA 33 66 100 DMA protocol that redefines signals on the IDE cable to allow both host and target throttling of data and transfer rates of up to 33 66 100 MB s M iTacSec...

Page 33: ...only CRT only and simultaneously display Fn F6 Brightness down Decreases the LCD brightness Fn F7 Brightness up Increases the LCD brightness Fn F10 Battery Low Beep On Off Battery Low Beep Fn F11 Pan...

Page 34: ...ble hibernate function in power Management to power button function Continue pushing power button over 4 seconds will force system off at ACPI mode 1 3 2 2 ACPI Mode 1 3 3 Cover Switch System automati...

Page 35: ...ff state or powered by battery BATTERY POWER This LED lights green when the notebook is being powered by Battery and flashes on 1 second off 1 second when entered suspend to RAM state with AC powered...

Page 36: ...by Battery and flash on 1 second off 1 second when Battery is low The LED is off when the notebook is off or powered by AC adaptor 1 3 4 2 Seven LED Indicators System has seven status LED indicators a...

Page 37: ...sound for twice per second 1 3 5 3 Battery Dead State When the battery voltage level reaches 11 5 volts system will shut down automatically in order to extend the battery packs life FAN is controlled...

Page 38: ...fe at less 220mAh 5 8uA 4 years One Power Supply Jack One External DVI I Connector For DVI Display Supports four USB port for all USB devices One MODEM RJ 11 phone jack for PSTN line One RJ 45 for LAN...

Page 39: ...0QMA N B Maintenance N B Maintenance Implanted H W current limit and battery learning circuit to enhance protection of battery 1 3 9 Battery Current Limit and Learning Line in Jack M iTacSecret Confid...

Page 40: ...System Management Mode 1 4 1 1 Full on Mode In this mode each device is running with the maximal speed CPU clock is up to its maximum 1 4 1 2 Doze Mode In this mode CPU will be toggling between on sto...

Page 41: ...m is entering power down mode for more power saving In this mode the following is the status of each device Suspend to DRAM CPU off Intel 915GM Partial off VGA Suspend PCMCIA Suspend Audio off SDRAM s...

Page 42: ...ement Functions 1 4 2 1 HDD Video Access System has the ability to monitor video and hard disk activity User can enable monitoring function for video and or hard disk individually When there is no vid...

Page 43: ...INTG I MAIN GPIO5 PCI_INTH I MAIN GPIO6 PM_BMBUSY I MAIN GPIO9 X I RESUME GPIO10 X I RESUME GPIO11 SMBALERT I RESUME GPIO12 KBD_US JP I MAIN GPIO13 WAKE_UP I RESUME GPIO14 X I RESUME GPIO15 X I RESUME...

Page 44: ...D1 I MAIN GPIO30 PANEL_ID2 I MAIN GPIO31 PANEL_ID3 I MAIN GPIO32 PCLKRUN I O MAIN GPIO33 MB_ID0 I O MAIN GPIO34 MB_ID1 I O MAIN GPIO40 MXM_DETECT I MAIN GPIO41 CRT_IN I MAIN GPIO48 X O MAIN GPIO49 HPW...

Page 45: ...E_UP 2 BATT_G 3 BATT_R 4 EXTSMI 5 CAP 6 NUM 7 SCROLL 0 H8_ENABKL 1 CHARGING 2 LEARING 3 H8_SUSB 4 KBRST H8_HRCIN 5 A20 A20GATE 6 H8_SCI 7 H8_PWRON 0 GPIO x1 SW_VDD3 1 H8_LIDSW 2 BATT_DEAD 3 H8_ADEN 4...

Page 46: ...H8_PROCHOT 7 BC_CPUCORE 0 T_DATA 1 H8_RSMRST 2 ICH_PWRBTN 3 T_CLK 4 H8_PWRON_SUSB 5 SUSC 6 BAT_DATA 7 BAT_CLK 0 PCICLK_KBC 1 SERIRQ 2 LAD3 3 LAD2 4 LAD1 5 LAD0 6 KBC_PCIRST 7 LFRAME P8 LPC interface P...

Page 47: ...s storage device Memory 200 pin SO DIMM DDR2 Memory Slot x2 Support DDR2 400 533 0MB Memory onboard Expandable to 2 0GB P VGA Controller Type I MXM Interface max 25W with 8 cells Vram Priority at laun...

Page 48: ...Ds for HDD Access ODD Access 3 LEDs for Number lock Caps lock Scroll lock 1 LED for Wireless on off 1 LED for Card Reader Accessing PC CARD 1x Type II PCMCIA Interface without Zoom Video Support Suppo...

Page 49: ...Input 100 240V 50 60Hz AC Dimensions 35mm x 250mm x 25 38mm Max P Weight 2 8KG TBD Manuals EN GR Pan EU Accessories AC Adapter Power Cord RJ 11 cable Option SAFETY LOCK Security Lock hole Kensington L...

Page 50: ...2 Left side View 2 System View and Disassembly Line In Connector MS SD MMC Card Slot 1394 Port MIC In Connector Line Out Connector Top Cover Latch S Video Port RJ 11 Connector DVI Port Ventilation Op...

Page 51: ...50 80 8050QMA 50QMA N B Maintenance N B Maintenance 2 1 3 Right side View 2 1 4 Rear View Lock AC Power Connector USB Ports 2 CD DVD ROM Drive Kensington Lock M iTacSecret ConfidentialDocum ent...

Page 52: ...1 6 Top open View Hard Disk Drive CPU Battery Park Stereo Speaker Set LCD Screen Internal MIC In Keyboard Stereo Speaker Set Power Button Device LED Indicators Touch Pad AC Power Indicator Battery Cha...

Page 53: ...roduction 2mm 2mm Bit Size 0 Screw Size Tooling Tor Bit Size 1 M2 0 Auto Screw driver 2 0 2 5 kg cm2 0 2 Auto screw driver for notebook assembly disassembly 1 Minus screw driver with bit size 2mm for...

Page 54: ...otebook NOTE Before you start to install replace these modules disconnect all peripheral devices and make sure the notebook is not turned on or connected to AC power Modular Components LCD Assembly Co...

Page 55: ...ion while take the battery pack out of the compartment Figure 2 1 1 Replace the battery pack into the compartment The battery pack should be correctly connected when you hear a clicking sound 2 Slide...

Page 56: ...tenance 2 3 2 Keyboard 1 Remove the battery pack Refer to section 2 3 1 Disassembly 2 Open the top cover 3 Loosen the five latches locking the keyboard Figure 2 2 Figure 2 2 Loose the five latches Dis...

Page 57: ...yboard cable and fit the keyboard back into place 2 Replace the keyboard fasten the five latches 3 Replace the battery pack Refer to section 2 3 1 Reassembly 4 Slightly lift up the keyboard and discon...

Page 58: ...k Disassembly 1 Remove the battery pack Refer to section 2 3 1 Disassembly 2 Remove the seven screws fastening the CPU cover Figure 2 4 3 Remove the four spring screws and two screws that secure the h...

Page 59: ...g the CPU 2 Connect the fan s power cord to the system board fit the heatsink upon the CPU then secure with four spring screws and two screws 3 Replace the CPU cover and secure with seven screws 4 Rep...

Page 60: ...DD compartment cover Disassembly 1 Carefully put the notebook upside down Remove the battery pack Refer to section 2 3 1 Disassembly 2 Remove the two screws fastening the HDD compartment cover Figure...

Page 61: ...Figure 2 9 Reassembly 1 Attach the bracket to hard disk drive and secure with four screws 2 Slide the HDD module into the compartment and secure with one screw 3 Place the HDD compartment cover and s...

Page 62: ...emove the battery pack See section 2 3 1 Disassembly 2 Remove the one screw fastening the CD DVD ROM drive Figure 2 10 3 Insert a small rod such as a straightened paper clip into CD DVD ROM drive s ma...

Page 63: ...ecure with seven screws Refer to the step 3 of section 2 3 3 Reassembly 3 Replace the battery pack See section 2 3 1 Reassembly Disassembly 1 Carefully put the notebook upside down Remove the battery...

Page 64: ...o step 3 of section 2 3 3 Reassembly 4 Replace the battery pack Refer to section 2 3 1 Reassembly Disassembly 1 Carefully put the notebook upside down Remove the battery pack Refer to section 2 3 1 Di...

Page 65: ...oard CPU hard disk drive CD DVD ROM drive DDR and modem card See sections 2 3 1 2 3 2 2 3 3 2 3 4 2 3 5 2 3 6 and 2 3 7 Disassembly 2 Remove the eighteen screws fastening the housing and separate the...

Page 66: ...ft the top shielding up then free the top shielding Figure 2 16 5 Separate the antenna and disconnect the two cables from the system board Figure 2 17 Figure 2 16 Remove the seven screws Figure 2 17 D...

Page 67: ...rews 2 Replace the antenna back into Mini PCI compartment 3 Reconnect the two cables to the system board 4 Replace the two hinge covers and secure with two screws 5 Replace the top shielding and secur...

Page 68: ...Disassembly 2 Remove the two rubber pads and two screws on the corners of the panel Figure 2 20 3 Insert a flat screwdriver to the lower part of the LCD cover and gently pry the frame out Repeat the p...

Page 69: ...t one cable to inverter board 5 Fit the LCD cover and secure with two screws and rubber pads 6 Replace the LCD assembly modem card DDR CD DVD ROM drive hard disk drive CPU keyboard and battery pack Re...

Page 70: ...3 5 2 3 6 2 3 7 2 3 8 and 2 3 9 Disassembly 2 Remove the one screw fastening the inverter board then free the inverter board Figure 2 24 Figure 2 24 Free the inverter board Reassembly 1 Fit the invert...

Page 71: ...sassembly 1 Remove the battery keyboard CPU hard disk drive CD DVD ROM drive DDR modem card and LCD assembly Refer to sections 2 3 1 2 3 2 2 3 3 2 3 4 2 3 5 2 3 6 2 3 7 and 2 3 8 Disassembly 2 Remove...

Page 72: ...ables from the system board and separate the R L rear covers Figure 2 27 5 Remove the four screws and lift the system board from the housing Figure 2 28 Figure 2 27 Disconnect the cables and separate...

Page 73: ...em board and replace the R L rear covers 4 Secure with four screws fasten the housing 5 Replace the LCD assembly modem card DDR CD DVD ROM drive hard disk drive CPU keyboard and battery pack Refer to...

Page 74: ...assembly 3 Remove the four screws and lift the shielding then free the touch pad Figure 2 30 Disassembly Figure 2 30 Free the touch pad Reassembly 1 Replace the touch pad then fit the shielding and se...

Page 75: ...3 SW4 SW2 J1 Inverter Board Connector J2 LCD Panel Connector J3 Internal Left Speaker Connector J4 Touch pad Module Connector J5 Internal Key board Connector J7 Internal Right Speaker Connector J8 PCM...

Page 76: ...9 J719 J723 PJ701 AC Adaptor Connector J701 J706 USB Port Connector J702 DVI Connector J703 Battery Connector J704 S video Connector J709 RJ45 RJ11 Connector J710 CD ROM IDE Connector J713 J714 DDR SO...

Page 77: ...U14 PU5 PU6 PU3 U7 U18 PU2 3VS 5VS Voltage Generator PU3 Charging Voltage Controller PU5 CPU_Core Voltage Generator PU6 1 5VS 1 05VS Voltage Generator PU12 1 8V_P 0 9VS_P Voltage Generate U7 CLOCK SYN...

Page 78: ...ts 4 2 Mother Board Side B U710 U711 U717 U722 U724 U709 U517 U709 Intel ICH6 M South Bridge U710 Intel 915PM North Bridge U711 Intel Dothan CPU U717 LAN RTL8100CL Controller U722 IEEE1394 Controller...

Page 79: ...nverted or not HDINVF 3 0 are asserted such that the number of data bits driven electrically low low voltage within the corresponding 16 bit group never exceeds 8 HDINV Data Bits HDINV 3 HD 63 48 HDIN...

Page 80: ...cles or more CPU use s this signal during a read cycle to activate the data input buffers in preparation for HDRDY and the related data HCPUSLP O CMOS Host CPU Sleep When asserted in the Stop Grant st...

Page 81: ...de Route to SO DIMM 0 Dual channel mode Route to SO DIMM A Note SA_MA13 is for support of 1 Gb devices SA_BS 2 0 O SSTL1 8 2 Bank Select These signals define which banks are selected within each SDRAM...

Page 82: ...Address These signals are used to provide the multiplexed row and column address to the SDRAM Single channel mode Route to SO DIMM 1 Dual channel mode Route to SO DIMM B NOTE SB_MA13 is for support o...

Page 83: ...0 O SSTL1 8 2 Clock Enable 1 per Rank SM_CKE 3 0 is used To initialize the SDRAMs during power up To power down SDRAM ranks To place all SDRAM ranks into and out of self refresh during STR SM_CKE 1 0...

Page 84: ...istor is required between REFSET and motherboard ground HSYNC O HVCMOS CRT Horizontal Synchronization This signal is used as the horizontal sync polarity is programmable or sync interval VSYNC O HVCMO...

Page 85: ...e PWM Clock input signal LVDS Reference signals LIBG I O Ref LVDS Reference Current 1 5 k Pull down resistor needed LVREFH I Ref Reserved No connect LVREFL I Ref Reserved No connect LVBG O A Reserve N...

Page 86: ...al Video C Green Complement Multiplexed with EXP_TXN_5 NOTE Signals do not exist in Intel 915GMS SDVOC_BLUE O PCIE Serial Digital Video Channel C Blue Multiplexed with EXP_TXP_6 NOTE Signals do not ex...

Page 87: ...will asynchronously reset the GMCH logic This signal is connected to the PLT_RST output of the ICH6 M This input has a Schmitt trigger to avoid spurious resets This input buffer is 3 3 V tolerant PWRO...

Page 88: ...x power supply 2 5 V VCCA_LVDS LVDS analog power supply 2 5 V LVDS VSSALVDS LVDS analog VSS Power and Ground Continued Interface Ball Name Description VCCA_TVBG TV DAC Band Gap Power 3 3 V VSSA_TVBG T...

Page 89: ...he transaction It is used in conjunction with TRDY A data phase is completed on any clock both IRDY and TRDY are sampled asserted During a write IRDY indicates the ICH6 has valid data present on AD 31...

Page 90: ...drive PME active due to an internal wake event The ICH6 will not drive PME high but it will be pulled up to VccSus3_3 by an internal pull up resistor Serial ATA Interface Signals Name Type Description...

Page 91: ...used to run the SATA controller Runs at 100 MHz This clock is permitted to stop during S3 or lower states DMI_CLKP DMI_CLKN I 100 MHz Differential Clock These signals are used to run the Direct Media...

Page 92: ...to disk When writing to disk ICH6 drives valid data on rising and falling edges of DWSTB Disk DMA Ready Ultra DMA Reads from Disk This is the DMA ready for reads from disk When reading from disk ICH6...

Page 93: ...the USB controllers to indicate that an overcurrent condition has occurred OC 7 4 may optionally be used as GPIs NOTE OC 7 0 are not 5 V tolerant USBRBIAS O USB Resistor Bias Analog connection point f...

Page 94: ...o use by other chips for refresh clock VRMPWRGD I VRM Power Good This should be connected to be the processor s VRM Power Good signifying the VRM is stable This signal is internally ANDed with the PWR...

Page 95: ...H6 can be configured to support processor Built In Self Test BIST INIT3_3V O Initialization 3 3 V This is the identical 3 3 V copy of INIT intended for Firmware Hub INTR O Processor Interrupt INTR is...

Page 96: ...urpose I O Signals 1 2 Continued Name Type Tolerance Power Well Description GPO 18 O 3 3 V Core This signal is fixed as output only NOTE GPO 18 will blink by default immediately after reset controllab...

Page 97: ...in S3 S4 S5 or G3 states This signal must be powered even if SATA not used V_CPU_IO Powered by the same supply as the processor I O voltage 3 pins This supply is used to drive the processor interface...

Page 98: ...pled high destination is LPC Also controllable via Boot BIOS Destination bit Chipset Configuration Registers Offset 3410h bit 3 NOTE This functionality intended for debug testing only Functional Strap...

Page 99: ...dec ALC655 Mic in Connector Internal Speaker Headphone CD ROM U724 SATA Bridge U709 South Bridge ICH6 M U717 LAN Controller RTL8110SBL RJ 45 Jack DMI PCMCIA Slot U722 IEEE1394 VT6301T PCI Bus FAN Powe...

Page 100: ...r is detected during these tests you will see an error message displayed on the screen If the error occurs before the display is initialized then the screen cannot display the error message Error code...

Page 101: ...Maintenance N B Maintenance 7 2 Maintenance Diagnostics 7 2 1 Diagnostic Tool for Mini PCI Slot P N 411906900001 Description PWA PWA MPDOG MINI PCI DOGKILLER CARD Note Order it from MIC TSSC M iTacSec...

Page 102: ...GA Adapter 14h Initialize the Chipset 13h Signal Power On Reset 12h Turn off FAST A20 for Post 11h Some Type of Lone Reset 10h POST Routine Description Code Sign on Messages Displayed 2Fh Search for C...

Page 103: ...h RAM Test Complete 36h Protected Mode Entered Safely 2 35h Test Blank and Count all RAM 34h Test Keyboard Command Byte 33h Test Keyboard Interrupt 32h Test if Keyboard Present 31h Special Init of Key...

Page 104: ...troller Test Error LCD No Display 8 4 External Monitor No Display 8 5 Memory Test Error 8 6 Keyboard K B Touch Pad T P Test Error 8 7 Hard Drive Test Error 8 8 CD ROM Drive Test Error 8 9 USB Port Tes...

Page 105: ...ny voltage feedback control to turn off the power Check whether no CPU power will cause system can t leave S5 status If there are not any diagram match these condition we should stop analyzing the sch...

Page 106: ...rts and signals Check following parts and signals Parts Signals No Board level Troubleshooting Replace Motherboard No Power Try another known good battery or AC adapter Is the notebook connected to po...

Page 107: ...PU5 PU503 PU504 PU506 PU511 PU512 CPU_CORE P30 KBC_CPUCORE R711 P23 PU502 PL503 PR508 3VS_P P27 PU2 3V P25 JS505 JS507 3VS U504 L509 L501 P26 3VS_HDD_ANALOG L564 P14 L562 P14 1 8VS_HDD 3VS_HDD P14 13...

Page 108: ...PL515 PU6 PU507 PL514 1 05VS_P VCCP JS508 JS510 P25 P28 VCC_GMCH L50 P6 1 5VS_P 1 5VS JS511 JS513 P28 1 5VS_DPLLA P6 L34 DVMAIN P28 PU508 PL515 1 5VS_DPLLB P6 L46 1 5VS_HPLL P6 L519 1 5VS_MPLL P6 L518...

Page 109: ...120Z 100M PC2 0 01U PL1 120Z 100M 1 2 4 PD501 RLZ24D PC501 1U PF1 7A 24VDC P31 JO2 JO1 SPARKGAP_6 PR1 10 4 5 6 RS OUT RS PU1 PC3 1U PC1 0 01U 3 VCC 1 GND0 2 GND1 MAX4173FEUT T JO502 OPEN SMT4 PR501 0...

Page 110: ...PR34 7 5K PC21 1000P PC22 0 01 PC30 1 PC23 0 1 P32 PR35 10K PC25 0 1 15 REF PR25 124K PJS1 SHORT SMT3 P23 GND GNDB PR11 02 GND H8_I_CTRL From U13 P23 PR36 590K PR37 100K 1 25V 6 PR33 80 6K PC24 0 1 _...

Page 111: ...AT_C BAT_D U13 Keyboard BIOS W83L950D 2 3 BAT_CLK BAT_DATA J703 Battery Connector P31 R344 2 7K VDD3 R385 2 7K P23 3 4 VDD3 3 PD2 BAV99 2 1 VDD3 3 PD3 BAV99 2 1 PR13 0 PR14 0 PQ504 2N7002 PR511 33K AD...

Page 112: ...H8_PWRON VDD3 R435 10K C388 0 01 R396 100K H8_RESET MN VCC RESET GND U21 IMP811 P26 25 29 X2 8MHz C326 22P 28 C330 22P 2 1 KBC_X KBC_X R328 1M 3VS_P H8_PWRON 2 1 4 5 3 U726 AHC1G08DCK VDD3 H8_RESET 5...

Page 113: ...tion to find out which part is causing the problem Make sure that CPU module DIMM memory are installed Properly Display OK Yes No Correct it To be continued Clock reset and power checking Check system...

Page 114: ...33 36 35 CLK_ITP_CPU CLK_ITP_CPU R111 33 R113 33 31 30 R125 33 R124 33 41 40 HCLK_MCH HCLK_MCH CLK_GMCH CLK_GMCH System Clock Check 8 2 No Display 2 U711 CPU DOTHAN P2 49 50 X1 14 318MHz C97 56P C98...

Page 115: ...U10C 74AHC08_V 9 10 8 14 7 3VS PCI_PCIRST U715 Card Bus CB712 P18 CARD_GRST U717 LAN Controller P15 27 LAN_PCIRST 26 MINIPCI_PCIRST J716 MINI PCI Slot P20 JL22 JP_NET10 JL23 JP_NET10 JL25 JP_NET10 Pow...

Page 116: ...m Yes No Yes No Re soldering One of the following parts on the mother board may be defective use an oscilloscope to check the following signal or replace the parts one at a time and test after each re...

Page 117: ..._TX1 LVDS_TX1 13 15 19 21 27 25 22 20 U709 South Bridge ICH6 M P9 LCD Inverter Board 3VS R13 20K 3VS R14 20K 3VS R15 20K J1 Inverter P10 L23 120Z 100M VDD3S 9 ENABKL_VGA U13 Keyboard BIOS W83L950D P23...

Page 118: ...0 U2 J702 J723 L11 L2 L10 L30 Signals 3VS CRT_DDDA CRT_HSYNC CRT_VSYNC CRT_DDCK CRT_RED CRT_GREEN CRG_BLUE Check if J702 are cold solder Display OK External Monitor No Display 1 Confirm monitor is goo...

Page 119: ...T_DDDA IGP_CRT_HSYNC IGP_CRT_VSYNC IGP_CRT_DDCK 12 14 7 2 6 3 5 4 8 1 CP1 47P 4 U710 North Bridge Intel 915PM GMCH P5 J702 P10 External DVI Connector CON_DDDA 13 CON_HSYNC CON_VSYNC 15 CON_DDCK L568 1...

Page 120: ...1 Check if on board SDRAM chips are no cold solder 2 Check the extend SDRAM module is installed properly J713 J714 3 Confirm the SDRAM socket J713 J714 is ok no band pins If your system host bus clock...

Page 121: ...A B _WE S A B _DM 0 7 S A B _DQ 0 63 NB_CLK_DDR 0 1 3 4 NB_CLK_DDR 0 1 3 4 U7 Clock Generator ICS954226 SMBDATA SMBCLK R692 10K R691 10K 3VS 47 46 SA_DQS 0 7 SA_DQS 0 7 SA_MA 0 13 CKE 0 1 CS 0 1 ODT 0...

Page 122: ...uch Pad Check J4 J5 for cold solder Yes No One of the following parts or signals on the motherboard may be defective use an oscilloscope to check the signals or replace the parts one at a time and tes...

Page 123: ...rk U14 SYSTEM BIOS SST49LF004A P24 P11 SERIRQ 69 13 15 17 LAD 0 3 65 68 J5 5V L48 120Z 100MHZ C537 0 1 Touch Pad P24 F2 0 5A POLYSW 1 2 SW_RIGHT 5 6 7 8 SW_LEFT R346 10K R348 10K 5VS 74 KBC_CPUCORE R7...

Page 124: ...IOS setup is OK 2 Try another working drive Check the system driver for proper installation No Re Test OK End Yes Board level Troubleshooting 8 7 Hard Disk Drive Test Error 1 Either an error message i...

Page 125: ...3 DD 0 15 27 42 1 3 5 7 DA 0 2 9 10 12 49 51 DCS 0 1 7 8 47 48 DACK DIOR DIOW DRST 16 20 22 44 54 58 59 16 R824 10k 11 R825 470 17 8 7 Hard Disk Drive Test Error 2 Either an error message is shown or...

Page 126: ...or replace the parts one at a time and test after each replacement Yes No Parts Signals Test OK Replace the faulty parts 1 Try another known good compact disk 2 Check install for correctly Check the C...

Page 127: ...VS R558 4 7K 5 37 6 21 38 42 31 29 28 27 25 22 24 35 36 34 33 5VS C198 10 C209 0 1 L49 120Z 100MHZ IDEIRQ SIORDY SDIOW SDDREQ SDDACK SDIOR SDA1 RSTDRV SD_D 0 15 SDA0 SDCS1 SDCS3 SDA2 RSTDRV Refer Sect...

Page 128: ...he following parts on the mother board may be defective use an oscilloscope to check the following signal or replace the parts one at a time and test after each replacement Replace another known good...

Page 129: ...B_0 R791 22 4 CE C503 0 1 L502 120Z 100M C502 0 1 L501 120Z 100M SW_VDD3 From U13 P23 USB_OC0 USBP0 USBP0 USBP1 USBP1 GND 2 R179 0 R180 0 R192 0 R186 0 F503 1 1A U503 RT9701 CB P14 USB Port J706 2 3 L...

Page 130: ...signal or replace parts one at a time and test after each replacement 1 If no sound cause of line out check the following parts signals 2 If no sound cause of MIC check the following parts signals 3...

Page 131: ...1 C748 1 C746 1 31 32 AGND VIN 1 OUT U17 RT9167 47CB 5 P19 3 CE ADJ 4 GND 2 C364 0 01 C763 1 C756 1 23 24 LINE_IN L LINE_IN R R436 0 R417 0 AGND R418 22K R437 22K J721 Line In Jack 2 3 5 P21 L79 BEAD_...

Page 132: ...17 DEVICE_DECT 5VS R1 Q31 DDTC144TCA R729 4 7K GND LLINEIN AMP_LEFT 5 6 LHPIN From previous page C360 1 C355 1 19 VDD AMPVDD R61 BEAD_600Z 100M J509 P22 No sound from speaker after audio driver is ins...

Page 133: ...other board may be defective use an oscilloscope to check the following signal or replace the parts one at a time and test after each replacement Parts Signals 1 Check if the driver is installed prope...

Page 134: ...100M L67 90Z 100M PJTX0 PJTX0 PJRX1 PJRX1 MDO2 MDO2 MDO3 MDO3 U507 NS692408 P15 P15 J506 RJ45 LAN Connector R670 49 9 R667 49 9 C651 0 01 GND R683 49 9 R682 49 9 C668 0 01 GND 12 11 9 8 6 5 3 2 1 2 5...

Page 135: ...use an oscilloscope to check the following signal or replace the parts one at a time and test after each replacement Parts U715 U709 U509 J8 R625 R604 R240 Try another known good PC Card or device Cor...

Page 136: ...2 CAD 0 31 CC BE 0 3 CFRAME CIRDY CTRDY CREQ CGNT CINT CBLOCK CSTOP CDEVSEL U715 CardBus Controller CB712 P18 3VS C650 0 1 CARD_VCC J8 Card Bus Socket P16 C657 0 1 C662 0 1 VPPOUT VPPD0 VPPD1 VCC5_EN...

Page 137: ...entium M Processor Intel INC Intel 915PM North Bridge Data Sheet Intel INC Intel ICH6 South Bridge Data Sheet Intel INC System Explode View Technology Corp MiTAC 8050QMA Hardware Engineering Specifica...

Page 138: ...ssistant Editor Ping Xie Publisher MiTAC International Corp Address 1 R D Road 2 Hsinchu Science Based Industrial Hsinchu Taiwan R O C Tel 886 3 5779250 Fax 886 3 5781245 First Edition Jun 2005 E mail...

Search results

Summary of Contents for 8050QMA

Reviews:

Related manuals for 8050QMA

Brands by name

Popular brands

MiTAC 8050QMA, Service Manual

Search results

Summary of Contents for 8050QMA

Reviews:

Related manuals for 8050QMA

Brands by name

Popular brands