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MiTAC 7521 PLUS/N service manual DVSS1 DVSS2, AVSS1 AVSS2

Models: 7521 PLUS/N

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DVSS1 DVSS2

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A

(+3VS)
+3V
2
	L34
	BEAD_120Z/100M/NA
	0805C_DFS
1
1	C97	1	C83	1
	C97		C83
	4.7U		0.1U
2	1206	2	0603B	2
2		2		2

C84

0.1U

0603B

2 1

VA

	2
	1
C59	1
C59
0.1U
0603B	2
	2

	1	C39
		C39
		10U 16V2
	2	1210
	2
			1
			2
	L26		1
	BEAD_120Z/100M		1
	BEAD_120Z/100M
	0805C

C48

0.1U

0603B

R50
0
0603
	K		C32 1	2
			0.01U
		D2	0603
		D2
R51	A	UDZ5.6B
0/NA	A
0/NA
0603B_DFS
	R42		R41
1		2	1	2
	4.7K		4.7K
	0603B	1	0603B
			C66
			1U
		2	0603B
		2

	R27 330
	1		2
		0603
	1	U4		8
	1	OUT0	IN0	8
	2	OUT0	IN0	7
	2	OUT1	IN1	7

36

NRERR

45

GNDSD

ADP3301AR-5

SO8

2 1

J503				L503
		1		BEAD_600Z/100M			R504		LINE_IN/L
		2		1		2	1	2	LINE_IN/L
		4		L502		R502	6.8K	0603
		5		L502		R502		LINE_IN/R
		3	1		2	1	2	LINE_IN/R
			BEAD_600Z/100M			6.8K	0603
CONN_SMKLGY2313			BEAD_600Z/100M				1	1
		2	2					R503	R505
								R503	R505
				L501				6.8K	6.8K
				L501				0603	0603
+12V		JO555 JO556		1	2			5%	5%
							2	2
				BEAD_600Z/100M
		1	1	0603B
		1	1
1	C35
	C35
	0.1U		CAGND
2	0603
2
		GND
		273000130006
	L13 1	2	BEAD_600Z/100M	0603B	1		J4
	L10 1	2	BEAD_600Z/100M	0603B	2		HIROSE

MA/2P/ST

C29DF13B-2P-1.25V 47P/NA

0603B

A

B

						GND
6,24	ARST#	R57	1	2
6,24	ARST#			0/NA 0603B_DFS
6,24	ASDOUT			0/NA 0603B_DFS
6,24	ASDOUT
6	ASDIN0
6,24	ASYNC		1	2	1	R59	2
6,24	ABITCLK		1	2	1	R59	2
6,24	ABITCLK			L33	0/NA		0603B_DFS
	1			L33	0/NA		0603B_DFS
		C106		BEAD_130Z/100M
		10P		P/N = 273000130039		CODEC_XIN
	2	0603
	2	10%
	GND

1 9	25 38
DVDD1 DVDD2	AVDD1 AVDD2

	11	RESET#
	5
		SDATA/OUT
	8
		SDATA/IN
	10
		SYNC
	6
		BIT/CLK

2XTL/IN

3XTL/OUT

12PC_BEEP

LINE/IN/L

LINE/IN/R

MIC1

MIC2

CD/R

CD/L

CD/GND

VIDEO/L

VIDEO/R

U5
23		C56			1				2	2.2U	0805	LINE_IN/L
23		C56			1				2	2.2U	0805	LINE_IN/L
24		C55			1				2	2.2U	0805	LINE_IN/R

21	C61	1			2	1U			0603
22	C60	1			2		1U		0603
22	C60	1			2		1U		0603
20	C63	1			2		1U		0603					CDROM_R
18	C73	1			2		1U		0603					CDROM_L
19	C64	1			2		1U		0603				CDROM_GND
16		C79			1				2	0.1U	0603B
17		C72			1				2	0.1U	0603B

2 1

C75

100P

0603B

L506

1 2

BEAD_600Z/100M 0603B

	2
2
L505
BEAD_600Z/100M	JO557
0603B
1	1

J509

3

5

4

2

1

CONN_SMKLGY2313

PHONE-JACK-LGY2313_0

CAGND

B

C

D

6SPKR

14CARDSPK#

										C41	2	1	0.1U
						VA				C40	2	1	0.1U/NA
						VA
										C510	2	1	0.1U/NA
						1	C89			C508	2	1	0.1U/NA
							C89
							0.1U
							0603
						2	50V
			U8										C509	1
	C98		U8										C509
	C98	1	1	VCC	5					C96			1000P
		1			5					C96			1000P
1	2	2			4	1	R54	2	1	2			0603
1	2	2	2	Y	4	1	R54	2	1	2			0603	2
		3	2	Y										2
0.1U		3	GND				6.8K			0.1U
			GND
		1	NC7S32					1
0603			NC7S32				0603			0603B
	R65		SOT25				R63
	47K						2.2K
	0603						0603
		2						2

C16			L21
1	2		1	2
273000150036			273000150036
0805C			0805C
BEAD_320Z/100M		GND	BEAD_320Z/100M
		AGND		GND
			R10
			1	2
C102			273000150036
C102			0805C
			0805C
1	2	AGND	BEAD_320Z/100M
		AGND
273000150036				GND
0805C
BEAD_320Z/100M		GND
			R73
			1	2
			273000150036
			0805C
		AGND	BEAD_320Z/100M
		AGND		GND

			AUX/L	14	C82		1	2	0.1U	0603B
31	BPCFG		AUX/R	15	C78		1	2	0.1U	0603B						GND
	BPCFG		AUX/R
32	FLT3D		LINE/OUT/L	35								AOUT_L	17
	FLT3D		LINE/OUT/L									AOUT_L	17
33	FLTI		LINE/OUT/R	36								AOUT_R	17					R62
	FLTI		LINE/OUT/R									AOUT_R	17
				13 C85			1U	0603
34	FLTO		PHONE	13 C85	1	2	1U	0603									1		2	MODEMSPK 24
				37 C46	1	2	1U	0603								1		6.8K 1%
			MONO_OUT	37 C46	1	2	1U	0603				MONO_OUT 24		1				6.8K 1%
40			MONO_OUT									MONO_OUT 24		1	C86	R58		0603B
40	NC1														C86	R58		0603B
43	NC1														0.01U	10K
43	NC2														0.01U	10K
44	NC2			39	C67		1	2	0.1U/NA	0603B					0603B	0603B
44	NC3	ALT_LINE_OUT_L		39	C67		1	2	0.1U/NA	0603B				2	0603B	0603B
45	NC3	ALT_LINE_OUT_L												2
45	ID0#				C76				0.1U/NA	0603B						2
46	ID0#			41			1	2								2
46	ID1#	ALT_LINE_OUT_R		41			1	2
47	ID1#	ALT_LINE_OUT_R
47	EAPD				C38				1000P	0603
48	EAPD			29		1		2
48	S/PDIF_OUT		AFLT1	29		1		2
	S/PDIF_OUT		AFLT1
			AFLT2	30	C42	1		2	1000P	0603			CDROM_R			1	R35	2
			AFLT2																	CDROM_RIGHT	13

	DVSS1 DVSS2	AVSS1 AVSS2		27												20K		0603
			VREFOUT	27									CDROM_L			20K		0603		CDROM_LEFT	13
			VREFOUT	28									CDROM_L			2	R60	1		CDROM_LEFT	13
			REFFLT
						1	C44		1	C47	1	C37				20K		0603
	4 7	26 42					C44			C47		C37
	4 7	26 42	CS4299				0.1U			0.1U		2.2U	2	2
			CS4299				0.1U			0.1U		2.2U	2	2
			PQFP48_0.5MM			2	0603B		2	0603B	2	1206	R55	R40
						2			2		2		R55	R40
	GND												100K	100K
	GND												0603	0603							C
													0603	0603							C
	GND												1	1
	GND												CDROM_GND
													CDROM_GND							CDROM_GND	13
																				CDROM_GND	13
												1
												R46
												0
												0603
												2

R75

18 CODEC_24M

1

2

CODEC_XIN

1

C110

0

0603

10P/NA

2

0603

10%

GND

D

MITAC INTERNATIONAL CORP.

Title

7521 plus

Size

Document Number

Rev

C

SD411670000002

02

Date:

Tuesday, May 08, 2001

Sheet

16

of

30

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2

3

4

5

6

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Image 160

MiTAC 7521 PLUS/N service manual DVSS1 DVSS2, AVSS1 AVSS2

Contents

SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFOR TESTING TECHNOLOGY DEPARTMENT // TSSCTSSC7521 Plus/N BY： Richard Wang7521Plus / N N/B MAINTENANCE CONTENTSCONTENTS 7521Plus / N N/B MAINTENANCE11. 7521 Plus/N Schematics 1.1 Introduction 1. Hardware Engineering Specification7521Plus / N N/B MAINTENANCE 1.2.1 System parts 1.2 Hardware System7521Plus / N N/B MAINTENANCE 7521Plus / N N/B MAINTENANCE 1.2.2 CPU MODULE1.2.3 Synthesizer 1.2.4 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP7521Plus / N N/B MAINTENANCE SiS630S Features7521Plus / N N/B MAINTENANCE Integrated DRAM ControllerFast PCI IDE Master/Slave Controller 7521Plus / N N/B MAINTENANCEVirtual PCI-to-PCI Bridge 7521Plus / N N/B MAINTENANCE Supports High Quality Dithering Supports Bump Mapping7521Plus / N N/B MAINTENANCE Built-In 64x64x2 Bit-Mapped Hardware Cursor7521Plus / N N/B MAINTENANCE Built-in Reference Voltage Generator and Monitor Sense Circuit7521Plus / N N/B MAINTENANCE Advanced PCI H/W Audio & Modem Advanced Power ManagementLow Pin Count Interface Integrated DMA Controller7521Plus / N N/B MAINTENANCE Integrated Interrupt ControllerThree 8254 Compatible Programmable 16-bits counters Integrated Keyboard Controller7521Plus / N N/B MAINTENANCE NAND Tree for Ball Connectivity Testing 672-Balls BGA PackageUniversal Serial Bus Host Controller I²C Bus/SMBus Series Interface7521Plus / N N/B MAINTENANCE 1.2.5 Super IO NS PC 97338VJG7521Plus / N N/B MAINTENANCE 1.2.6 PC CARD interface controller TI12257521Plus / N N/B MAINTENANCE 1.2.7 DUAL-SLOT PC CARD POWER INTERFACE SWITCH TPS22061.2.8 Keyboard system H8 3434F universal keyboard controller Memory7521Plus / N N/B MAINTENANCE 16-bit free-running timer8-bit timer 2 channels PWM timer 2 channels7521Plus / N N/B MAINTENANCE Power-down modesCover switch Battery charging control Smart Battery monitoring Fan control and LED indicator serial interface 100pin TQFP1.2.9 System BIOS 7521Plus / N N/B MAINTENANCE1.2.9.1 System BIOS and Software Features Overview 7521Plus / N N/B MAINTENANCE 1.2.9.2 BIOS Setup Feature Introduction7521Plus / N N/B MAINTENANCE 1.2.10 POWER MANAGEMENTACPI Power States Summary of Global Power States7521Plus / N N/B MAINTENANCE Summary of Device Power SatesSystem States 1. Working S0 2.Sleeping State S33.Hibernation S4 7521Plus / N N/B MAINTENANCE4.Soft Off State S5 Component Level Power Management Matrix 7521Plus / N N/B MAINTENANCE5.Mechanical Off 7521Plus / N N/B MAINTENANCE Power State 1.Full PowerAPM Concept 2. Idle7521Plus / N N/B MAINTENANCE 4.SuspendComponent Level Power Management Matrix 7521Plus / N N/B MAINTENANCE5. Off 7521Plus / N N/B MAINTENANCE 1.2.11 Memory System7521Plus / N N/B MAINTENANCE 1.2.12 Interface7521Plus / N N/B MAINTENANCE 1.2.13 Audio System AC’97 CODEC CS42997521Plus / N N/B MAINTENANCE 1.2.14 IR MODULE HSDL-3600#0077521Plus / N N/B MAINTENANCE 7521Plus / N N/B MAINTENANCE SiS900 FeaturesAdditional features 7521Plus / N N/B MAINTENANCESupports PC97, PC98, and Net PC requirements - Green PC compatible CH7005 Features 7521Plus / N N/B MAINTENANCE1.2.16 CH7005C Digital PC to TV Encoder 7521Plus / N N/B MAINTENANCE 1.3 Special Feature Function1.3.1 Hot Key Function 1.3.2 Easy Start Button function 1.3.3 Flash ROM BIOS 7521Plus / N N/B MAINTENANCE1.3.4 LED Indicators 7521Plus / N N/B MAINTENANCE 1.4 SMM and System BIOS1.3.5 COM port assignment 7521Plus / N N/B MAINTENANCE HDD & Video accessBattery Warning Suspend to DRAM7521Plus / N N/B MAINTENANCE Cover SwitchBattery Warning State Battery Low State1.5 Peripheral Components 7521Plus / N N/B MAINTENANCELCD Panel Hard Disk DriveKeyboard 7521Plus / N N/B MAINTENANCEFloppy Disk Drive Touch Pad 7521Plus / N N/B MAINTENANCE24X CD-ROM Drive DVD-ROM drive 7521Plus / N N/B MAINTENANCECD-R/RW drive 7521Plus / N N/B MAINTENANCE LED IndicatorsCMOS Battery IO portSerial Interface 7521Plus / N N/B MAINTENANCEPCMCIA Socket 7521Plus / N N/B MAINTENANCE ‰ Dimension 25mmx25mmx10mm±0.5mm‰ Operating temperature -10 - +70 degree C ‰ Weight 7g ‰ Rated power 0.6 W ‰ Static pressure 0.09 inch-H2O7521Plus / N N/B MAINTENANCE 1.6 Appendix 1 GPIO definitionsGPI DEFINITIONS Note 3. CPU & SDRAM Frequency setting table 7521Plus / N N/B MAINTENANCENote 1. LCD ID 2 System View and Disassembly 2.0 Tools introduction7521Plus / N N/B MAINTENANCE 1.Minus screw driver with bit size 3mm for CPU assembly & disassembly2.1 System View 7521Plus / N N/B MAINTENANCE2 System View and Disassembly 2.1.1 Front View7521Plus / N N/B MAINTENANCE n Battery Pack o CD-ROM/DVD-ROM Drive p IR Portn Power Connector o PS/2 Port s RJ-45 Connector t VGA Port7521Plus / N N/B MAINTENANCE n CPU Cover o Modem Card Cover p FDD/HDD Module q Battery Pack2.1.5 Bottom View 2.1.6 Top-Open View2.2 System Disassembly 7521Plus / N N/B MAINTENANCEModular Components NOTEBOOK LCD Assembly Components 2.2.1 Battery Pack 2.2.2 CPU 2.2.3 Modem Card 2.2.4 FDD/HDD Module2.2.1 Battery Pack Disassembly 7521Plus / N N/B MAINTENANCEReassembly 7521Plus / N N/B MAINTENANCE 2.2.2 CPU Disassembly7521Plus / N N/B MAINTENANCE 3. Replace the CPU compartment cover and secure with two screws7521Plus / N N/B MAINTENANCE 2.2.3 Modem Card Disassembly7521Plus / N N/B MAINTENANCE 3. Replace the compartment cover and secure with one screw7521Plus / N N/B MAINTENANCE 2.2.4 FDD/HDD Module Disassembly7521Plus / 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. figure7521Plus / N N/B MAINTENANCE 2.2.5 CD-ROM Drive Disassembly7521Plus / N N/B MAINTENANCE 6. Hold the CD-ROM drive and slide it outward carefully. figure7521Plus / N N/B MAINTENANCE 1. Open the top cover7521Plus / N N/B MAINTENANCE 1. Remove the keyboard to access the SO-DIMM sockets. See section 2.2.6 Disassembly7521Plus / N N/B MAINTENANCE 2.2.8 LCD Assembly Disassembly2. Reconnect the LCD cable connectors to the system board 7521Plus / N N/B MAINTENANCE3. Replace the two hinge covers 4. Replace the Easy Start panel 7521Plus / N N/B MAINTENANCE 1. Remove the LCD assembly. See section 2.2.8 Disassembly7521Plus / N N/B MAINTENANCE 1. Fit the inverter board back into place and secure with two screws7521Plus / N N/B MAINTENANCE 2.2.11 System Board Disassembly7521Plus / N N/B MAINTENANCE 7. Lift up the speaker assembly and disconnect the cable. figure7521Plus / N N/B MAINTENANCE 8. Remove four screws to take the recharge board apart. figure7521Plus / N N/B MAINTENANCE 6. Replace the base unit frame and secure with twelve screws7521Plus / N N/B MAINTENANCE 1. Remove the system board. See section 2.2.11 Disassembly3. Definition & Location Of Connectors / Switches 3.1 Mother Board-A7521Plus / N N/B MAINTENANCE J1 Inverter BD CONN J2 LCD panel LVDS connector3.2 Mother Board Switch Table 7521Plus / N N/B MAINTENANCE3. Definition & Location Of Connectors / Switches SW3. CPU & SDRAM Frequency setting table3.3 Mother Board-B 7521Plus / N N/B MAINTENANCE3. Definition & Location Of Connectors / Switches PJ501 Power jack AC adapter3.4 Daughter Board 7521Plus / N N/B MAINTENANCE3. Definition & Location Of Connectors / Switches J1 RJ-11 phone jack for internal modem J23 MDC jump wire connector3.5 Charger Board 7521Plus / N N/B MAINTENANCE3. Definition & Location Of Connectors / Switches J1Charger & Touch-Pad connector to M/B. PJ4Battery pack connector3.6 IQSB Board 3.7 Easy Start Button Board Easy Start Button Boardside AEasy Start Button Boardside B 7521Plus / N N/B MAINTENANCE4. Definition & Location Of Major Components 4.1 Main Board Side A7521Plus / N N/B MAINTENANCE U13 TPS2206 PCcard Power switch matrix4.2 Main Board SIDE B 7521Plus / N N/B MAINTENANCE4. Definition & Location Of Major Components U502 PH163112 LAN Controller U503 Socket 370 CPU5. Pin Descriptions Of Major Components 5.1 Pentium III/Celeron FC-PGA2 CPU7521Plus / N N/B MAINTENANCE Alphabetical Signal Reference7521Plus / N N/B MAINTENANCE Alphabetical Signal ReferenceSignal Name Signal Name7521Plus / N N/B MAINTENANCE Alphabetical Signal ReferenceSignal Name Signal Description7521Plus / N N/B MAINTENANCE Alphabetical Signal ReferencePWRGOOD Relationship at Power On PWRGOOD Relationship at Power On7521Plus / N N/B MAINTENANCE PWRGOOD Relationship at Power OnSignal Name Signal Description7521Plus / N N/B MAINTENANCE PWRGOOD Relationship at Power OnSignal Name Signal Description5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset 7521Plus / N N/B MAINTENANCEPower Power7521Plus / N N/B MAINTENANCE Power5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE Power5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE Power management InterfacePower 5. Pin Descriptions Of Major Components7521Plus / N N/B MAINTENANCE Power management Interface5. Pin Descriptions Of Major Components 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset RTC Interface7521Plus / N N/B MAINTENANCE Power andGroundSignalsLegacy I/o and Miscellaneous Signals Power7521Plus / N N/B MAINTENANCE 6. System Block DiagramU2 SH5 7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCE7.1 Introduction PIO PORT7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCESYSTEM SOFT BIOS 7521Plus / N N/B MAINTENANCE 7. Maintenance DiagnosticsSYSTEM SOFT BIOS CODE7521Plus / N N/B MAINTENANCE 7. Maintenance DiagnosticsPIO CONNECTOR OR P/N4119048000018. TROUBLE SHOOTING 8.1 NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY8.4 EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROR 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR8.1 NO POWER 7521Plus / N N/B MAINTENANCE1. Check AC Adaptor 2. Check OUTLET. 3.Check Charge B’D OUTLET7521Plus / N N/B MAINTENANCE 8.1 NO POWERPOWER IN +S5V7521Plus / N N/B MAINTENANCE 8.1 NO POWERSymptom POWER IN7521Plus / N N/B MAINTENANCE 8.1 NO POWERSymptom No power7521Plus / N N/B MAINTENANCE 8.1 NO POWERSymptom 2. Check the power source from AC adapter. PJ5018.2 NO DISPLAY 7521Plus / N N/B MAINTENANCE1. Check if power system is O.K Reboot and display OK?7521Plus / N N/B MAINTENANCE 8.2 NO DISPLAYSystem Clock Check U505SH14 TI1225 PCMCIA7521Plus / N N/B MAINTENANCE Power Good & Reset System7521 Power Module 8.2 NO DISPLAYSIS 630S 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY7521Plus / N N/B MAINTENANCE There is no display or picture abnormal on LCD7521Plus / N N/B MAINTENANCE 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAYThere is no display or picture abnormal on LCD VGA CONTROLLER FAILUREU24 SIS 630S 8.4 EXTERNAL MONITOR NO DISPLAY7521Plus / N N/B MAINTENANCE There is no display or picture abnormal on CRT monitor7521Plus / N N/B MAINTENANCE 8.4 EXTERNAL MONITOR NO DISPLAYThere is no display or picture abnormal on CRT monitor VGA CONTROLLER FAILURE8.5 MEMORY TEST ERROR 7521Plus / N N/B MAINTENANCEEither on board or extend SDRAM is failure or system hangs up Clock Synthesizer7521Plus / N N/B MAINTENANCE 8.5 MEMORY TEST ERROREither on board or extend SDRAM is failure or system hangs up Correct it7521Plus / N N/B MAINTENANCE 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERRORError message of keyboard failure is shown or any key doesn’t work SIS 630S7521Plus / N N/B MAINTENANCE 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERRORTroubleshooting Replace M/B or8.7 CD-ROM DRIVE TEST ERROR 7521Plus / N N/B MAINTENANCEAn error message is shown when reading data from CD-ROM drive 630S7521Plus / N N/B MAINTENANCE 8.7 CD-ROM DRIVE TEST ERRORAn error message is shown when reading data from CD-ROM drive Replace M/B or into board-level Troubleshooting8.8 HARD DRIVE TEST ERROR 7521Plus / N N/B MAINTENANCE630S +5VSHDD7521Plus / N N/B MAINTENANCE 8.8 HARD DRIVE TEST ERRORReplace mother BD or into board-level Troubleshooting Parts8.9 USB PORT TEST ERROR 7521Plus / N N/B MAINTENANCEAn error occurs when a USB I/O device is installed U24 SIS 630S7521Plus / N N/B MAINTENANCE 8.9 USB PORT TEST ERRORAn error occurs when a USB I/O device is installed Board-level Troubleshooting for USB test error8.10 AUDIO FAILURE SIS 630S7521Plus / N N/B MAINTENANCE No sound from speaker after audio driver is installed7521Plus / N N/B MAINTENANCE No sound from speaker after audio driver is installed8.10 AUDIO FAILURE AUDIO OUT7521Plus / N N/B MAINTENANCE No sound from speaker after audio driver is installedTroubleshooting for audio test error8.11 SIO PORT TEST ERROR 7521Plus / N N/B MAINTENANCEAn error occurs when a mouse or other I/O device is installed SUPER I/O7521Plus / N N/B MAINTENANCE 8.11 SIO PORT TEST ERRORAn error occurs when a mouse or other I/O device is installed Board-level Troubleshooting for SIO test error8.12 PIO PORT TEST ERROR 7521Plus / N N/B MAINTENANCEWhen a print command is issued, printer prints nothing or garbage LO OPBACK CONNECTOR FOR PIO TEST7521Plus / N N/B MAINTENANCE 8.12 PIO PORT TEST ERRORWhen a print command is issued, printer prints nothing or garbage Board-level Troubleshooting for PIO test error8.13 PC-CARD SOCKET FAILURE 7521Plus / N N/B MAINTENANCEAn error occurs when a PC card device is installed AD031 C/BE03 PAR TRDY# IRDY# RESET# SERR# PERR# STOP# DEVSEL# FRAME#7521Plus / N N/B MAINTENANCE An error occurs when a PC card device is installedChange M/B or go into board-level Troubleshooting Board-level Troubleshooting for PC CARD test error9. SPARE PARTS LIST-1 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-2 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-3 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-4 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-5 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-6 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-7 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-8 7521Plus / N N/B MAINTENANCEPart Number Description9. SPARE PARTS LIST-9 7521Plus / N N/B MAINTENANCEPart Number DescriptionPage ISSUES 7521 plus R02DRAWN DESIGN CHECKC P U CELERON PPGA 370-PIN SOCKET630S-1 630S-2 630S-5 VSS30Page 630S-4 VSSA VSSB VSSC VSSDDefault mount R48 if TV function required Test onlyNever mount evenCLOCK SYNTHESIZER AND DRIVER 144 PIN SODIMM SOCKET CLOSE TO RECEIVER2M X 16 BITS X 4 BANK X 4 = 64M BYTES GND1 GND2Slave address IDSELAD2000110001 SECONDARY IDE CONNECTOR PRIMARY IDE & FDD CONNECTOR0603B CONTENTS -- 64H IDSEL AD19MULTIFUNCTION PIN SERIAL IRQ/PARALLEL PCI INTERRUPTPOWER SWITCH MATRIX PCCARD SOCKETDVSS1 DVSS2 AVSS1 AVSS2RLINE IN VCC3 GND0GND1 GND2RS232/SIO SUPER I/OHP FIR MODULE HSDL-3600#007 VCC1 VCC2 AVCC VCCBVSS1 VSS2 VSS3 VSS4 AVSSUSB CONNECTOR SYSTEM BIOS Slave AddressRESET# Charger board connector PREQ# PULL UP AT CPU7521 plusADINP & DISCHARGE ABCDE 16.60V16.65V 16.70V7521 plus S5VS3VS12V 7521 plus 1.5V/1.8V SENSE1+SENSE1 SENSE2+7521 plus+5V+3V+12VS1.8V2.5V 7521 plusCPU PWR ISSUES 7521P HDD/FDD BDDRAWN DESIGNDRAWN DESIGN CHECK ISSUES ISSUES DRAWNDESIGN CHECKDRAWN DESIGN CHECK ISSUES 1+6054554 94240-= -4$+1,511 DRAWN DESIGN CHECK ISSUES=904= SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFOR 75217521Plulus/Ns/NSponsoring Editor Shoestring Tsai Author Richard.Wang Assistant Editor Kelly Chiang Publisher MITAC INTERNATIONAL CORP