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MiTAC 7521 PLUS/N service manual 2M X 16 BITS X 4 BANK X 4 = 64M BYTES

Models: 7521 PLUS/N

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2M X 16 BITS X 4 BANK X 4 = 64M BYTES

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2

3

4

5

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8

2M X 16 BITS X 4 BANK X 4 = 64M BYTES

A

B

3,9 MAB#0

3,9 MAB#1

3,9 MAB#2

3,9 MAB#3

3,9 MAB#4

3,9 MAB#5

3,9 MAB#6

3,9 MAB#7

3,9 MAB#8

3,9 MAB#9

3,9 MAB10

3,9 MAB13

3,9 MAB#12

3,9 MAB#11

8	SDRAMCLK3
3	CKE4

3,9 SRASA#

3,9 SCASA#

3,9 WEA#

3CSA#2

3,9 DQMA#0

3,9 DQMA#1

3,9 MAB14

MAB#0		23		U29
MAB#1		24		A0			DQ0
				A1			DQ1
MAB#2		25
				A2			DQ2
MAB#3		26
MAB#4		29		A3			DQ3
MAB#5		30		A4			DQ4
				A5			DQ5
MAB#6		31
				A6			DQ6
MAB#7		32
				A7			DQ7
MAB#8		33
				A8			DQ8
MAB#9		34
MAB10		22		A9			DQ9
MAB13		35		A10/AP			DQ10
MAB#12		21		A11			DQ11
				A12/BA1			DQ12
MAB#11		20
				A13/BA0			DQ13

							DQ14
							DQ15
SDRAMCLK3		38		CLK			VDD0
CKE4		37
				CKE			VDD1

							VDD2
SRASA#		18
				RAS			VSS0
SCASA#		17
				CAS			VSS1

WEA#		16					VSS2
				WE			VDDQ0
CSA#2		19
				CS			VDDQ1
DQMA#0		15					VDDQ2
				LDQM			VDDQ3
DQMA#1		39
				UDQM			VSSQ0

MAB14		36					VSSQ1
				N.C			VSSQ2
		40
				N.C/RFU			VSSQ3

SDRAM_2M*16*4

TSOP54

2	MD0
4	MD1
5	MD2
7	MD3
8	MD4
10	MD5
11	MD6
13	MD7
42	MD8
44	MD9
45	MD10
47	MD11
48	MD12
50	MD13
51	MD14
53	MD15
1	+S3V
14	+S3V
14
27
28
41
54
3
9
43
49	3,9	DQMA#2
6	3,9	DQMA#3
6
12
46
52
	GND

MD[0..63]

MAB#0		23		U22				2	MD16
MAB#1		24		A0			DQ0	4	MD17
				A1			DQ1
MAB#2		25						5	MD18
				A2			DQ2
MAB#3		26						7	MD19
MAB#4		29		A3			DQ3	8	MD20
MAB#5		30		A4			DQ4	10	MD21
				A5			DQ5
MAB#6		31						11	MD22
				A6			DQ6
MAB#7		32						13	MD23
				A7			DQ7
MAB#8		33						42	MD24
				A8			DQ8
MAB#9		34						44	MD25
MAB10		22		A9			DQ9	45	MD26
MAB13		35		A10/AP			DQ10	47	MD27
MAB#12		21		A11			DQ11	48	MD28
				A12/BA1			DQ12
MAB#11		20						50	MD29
				A13/BA0			DQ13
								51	MD30
							DQ14
								53	MD31
							DQ15
SDRAMCLK3		38						1		+S3V
				CLK			VDD0
CKE4		37		CKE			VDD1	14
								27
							VDD2
SRASA#		18						28

				RAS			VSS0
SCASA#		17		CAS			VSS1	41
								54
WEA#		16					VSS2

				WE			VDDQ0	3
CSA#2

		19						9
				CS			VDDQ1
								43
DQMA#2							VDDQ2
		15						49
				LDQM			VDDQ3
DQMA#3		39
				UDQM			VSSQ0	6

								12
MAB14							VSSQ1
		36						46
				N.C			VSSQ2
		40						52
				N.C/RFU			VSSQ3


				SDRAM_2M164
				TSOP54					GND

MD[0..63] 9

8	SDRAMCLK2
3	CKE2
3	CSA#3

MAB#0				U30					MD0
		23		A0			DQ0	2
MAB#1		24						4	MD1
MAB#2		25		A1			DQ1	5	MD2
MAB#3		26		A2			DQ2	7	MD3
				A3			DQ3
MAB#4		29						8	MD4
				A4			DQ4
MAB#5		30						10	MD5
				A5			DQ5
MAB#6		31						11	MD6
				A6			DQ6
MAB#7		32						13	MD7
MAB#8		33		A7			DQ7	42	MD8
MAB#9		34		A8			DQ8	44	MD9
MAB10		22		A9			DQ9	45	MD10
				A10/AP			DQ10
MAB13		35						47	MD11
				A11			DQ11
MAB#12		21						48	MD12
				A12/BA1			DQ12
MAB#11		20						50	MD13
				A13/BA0			DQ13
								51	MD14
							DQ14
								53	MD15
							DQ15
SDRAMCLK2		38						1		+S3V
				CLK			VDD0
CKE2		37		CKE			VDD1	14
								27
							VDD2
SRASA#		18						28

				RAS			VSS0
SCASA#		17		CAS			VSS1	41
								54
WEA#		16					VSS2

				WE			VDDQ0	3
CSA#3

		19						9
				CS			VDDQ1
								43
DQMA#0							VDDQ2
		15						49
				LDQM			VDDQ3
DQMA#1		39
				UDQM				6
							VSSQ0

								12
MAB14							VSSQ1
		36						46
				N.C			VSSQ2
		40						52
				N.C/RFU			VSSQ3

				SDRAM_2M164/NA
				TSOP54					GND

MD[0..63]

MD[0..63] 9

MAB#0

U23

MD16

23

A0

DQ0

2

MAB#1

24

4

MD17

MAB#2

25

A1

DQ1

5

MD18

MAB#3

26

A2

DQ2

7

MD19

A3

DQ3

A

MAB#4

29

8

MD20

A4

DQ4

MAB#5

30

10

MD21

A5

DQ5

MAB#6

31

11

MD22

A6

DQ6

MAB#7

32

13

MD23

MAB#8

33

A7

DQ7

42

MD24

MAB#9

34

A8

DQ8

44

MD25

MAB10

22

A9

DQ9

45

MD26

A10/AP

DQ10

MAB13

35

47

MD27

A11

DQ11

MAB#12

21

48

MD28

A12/BA1

DQ12

MAB#11

20

50

MD29

A13/BA0

DQ13

51

MD30

DQ14

53

MD31

DQ15

SDRAMCLK2

38

1

+S3V

CLK

VDD0

CKE2

37

CKE

VDD1

14

27

VDD2

SRASA#

18

28

RAS

VSS0

SCASA#

17

CAS

VSS1

41

54

WEA#

16

VSS2

WE

VDDQ0

3

CSA#3

19

9

CS

VDDQ1

43

VDDQ2

DQMA#2

15

49

LDQM

VDDQ3

DQMA#3

39

UDQM

6

VSSQ0

12

MAB14

VSSQ1

36

46

N.C

VSSQ2

40

52

N.C/RFU

VSSQ3

SDRAM_2M*16*4/NA

TSOP54

GND

B

C

3,9 DQMA#4

3,9 DQMA#5

1
	R159
	220/NA
	0603B
2
1	C211
	C211
	10P/NA
2	0603B
2

GND

MAB#0		23		U25
MAB#1		24		A0			DQ0
				A1			DQ1
MAB#2		25
				A2			DQ2
MAB#3		26
				A3			DQ3
MAB#4		29
				A4			DQ4
MAB#5		30
				A5			DQ5
MAB#6		31
MAB#7		32		A6			DQ6
MAB#8		33		A7			DQ7
				A8			DQ8
MAB#9		34
				A9			DQ9
MAB10		22
				A10/AP			DQ10
MAB13		35
				A11			DQ11
MAB#12		21
MAB#11		20		A12/BA1			DQ12
				A13/BA0			DQ13
							DQ14
							DQ15
SDRAMCLK3		38		CLK			VDD0
CKE4		37
				CKE			VDD1

							VDD2
SRASA#		18
				RAS			VSS0
SCASA#		17
				CAS			VSS1

WEA#		16					VSS2
				WE			VDDQ0
CSA#2		19

				CS			VDDQ1

DQMA#4		15					VDDQ2
				LDQM			VDDQ3
DQMA#5		39
				UDQM
							VSSQ0

MAB14		36					VSSQ1
		40		N.C			VSSQ2
				N.C/RFU			VSSQ3

SDRAM_2M*16*4

TSOP54

2	MD32
4	MD33
5	MD34
7	MD35
8	MD36
10	MD37
11	MD38
13	MD39
42	MD40
44	MD41
45	MD42
47	MD43
48	MD44
50	MD45
51	MD46
53	MD47
1	+S3V
14
27
28
41
54
3
9
43
49	3,9	DQMA#6
	3,9	DQMA#6
6	3,9	DQMA#7
6		1
12		R180
46		R180

52220/NA 0603B

	2
GND	1	C236
		C236
		10P/NA
	2	0603B
	2

GND

MAB#0		23		U18				2	MD48
MAB#1		24		A0			DQ0	4	MD49
				A1			DQ1
MAB#2		25						5	MD50
				A2			DQ2
MAB#3		26						7	MD51
				A3			DQ3
MAB#4		29						8	MD52
				A4			DQ4
MAB#5		30						10	MD53
				A5			DQ5
MAB#6		31						11	MD54
MAB#7		32		A6			DQ6	13	MD55
MAB#8		33		A7			DQ7	42	MD56
				A8			DQ8
MAB#9		34						44	MD57
				A9			DQ9
MAB10		22						45	MD58
				A10/AP			DQ10
MAB13		35						47	MD59
				A11			DQ11
MAB#12		21						48	MD60
MAB#11		20		A12/BA1			DQ12	50	MD61
				A13/BA0			DQ13	51	MD62
							DQ14
								53	MD63
							DQ15
SDRAMCLK3		38						1		+S3V
				CLK			VDD0
CKE4		37		CKE			VDD1	14
								27
							VDD2
SRASA#		18						28

				RAS			VSS0
SCASA#		17		CAS			VSS1	41
								54
WEA#		16					VSS2

				WE			VDDQ0	3
CSA#2

		19						9
				CS			VDDQ1
								43
DQMA#6							VDDQ2
		15						49
				LDQM			VDDQ3
DQMA#7		39
				UDQM				6
							VSSQ0

								12
MAB14							VSSQ1
		36						46
				N.C			VSSQ2
		40						52
				N.C/RFU			VSSQ3


				SDRAM_2M164
				TSOP54					GND

+S3V

MAB#0

U26

MD32

23

A0

DQ0

2

MAB#1

24

4

MD33

A1

DQ1

MAB#2

25

5

MD34

A2

DQ2

MAB#3

26

7

MD35

A3

DQ3

MAB#4

29

8

MD36

MAB#5

30

A4

DQ4

10

MD37

MAB#6

31

A5

DQ5

11

MD38

A6

DQ6

MAB#7

32

13

MD39

A7

DQ7

MAB#8

33

42

MD40

A8

DQ8

MAB#9

34

44

MD41

A9

DQ9

MAB10

22

45

MD42

MAB13

35

A10/AP

DQ10

47

MD43

MAB#12

21

A11

DQ11

48

MD44

A12/BA1

DQ12

MAB#11

20

50

MD45

A13/BA0

DQ13

51

MD46

DQ14

53

MD47

DQ15

SDRAMCLK2

38

1

+S3V

CLK

VDD0

CKE2

37

CKE

VDD1

14

27

VDD2

SRASA#

18

28

RAS

VSS0

SCASA#

17

CAS

VSS1

41

54

WEA#

16

VSS2

WE

VDDQ0

3

CSA#3

19

9

CS

VDDQ1

43

DQMA#4

VDDQ2

15

49

LDQM

VDDQ3

DQMA#5

39

UDQM

6

1

VSSQ0

1

12

R139

MAB14

VSSQ1

36

46

N.C

VSSQ2

220/NA

40

52

N.C/RFU

VSSQ3

0603B

2

SDRAM_2M*16*4/NA

2

TSOP54

GND

1

C197

1

10P/NA

2

0603B

2

GND

GND

	MAB#0		U19					MD48
	MAB#0	23	A0			DQ0	2	MD48
	MAB#1	24	A0			DQ0	4	MD49
	MAB#1	24	A1			DQ1	4	MD49
	MAB#2	25	A1			DQ1	5	MD50
	MAB#2	25	A2			DQ2	5	MD50
	MAB#3	26	A2			DQ2	7	MD51
	MAB#3	26	A3			DQ3	7	MD51
	MAB#4	29	A3			DQ3	8	MD52
	MAB#5	30	A4			DQ4	10	MD53
	MAB#6	31	A5			DQ5	11	MD54
	MAB#6	31	A6			DQ6	11	MD54
	MAB#7	32	A6			DQ6	13	MD55
	MAB#7	32	A7			DQ7	13	MD55
	MAB#8	33	A7			DQ7	42	MD56
	MAB#8	33	A8			DQ8	42	MD56
	MAB#9	34	A8			DQ8	44	MD57
	MAB10	22	A9			DQ9	45	MD58
	MAB13	35	A10/AP			DQ10	47	MD59
	MAB#12	21	A11			DQ11	48	MD60
	MAB#12	21	A12/BA1			DQ12	48	MD60
	MAB#11	20	A12/BA1			DQ12	50	MD61
	MAB#11	20	A13/BA0			DQ13	50	MD61
			A13/BA0			DQ13	51	MD62
						DQ14	51	MD62
						DQ14	53	MD63
						DQ15	53	MD63
	SDRAMCLK2	38				DQ15	1		+S3V
	SDRAMCLK2	38	CLK			VDD0	1		+S3V
	CKE2	37	CKE			VDD1	14
			CKE			VDD1	27
						VDD2	27
	SRASA#	18				VDD2	28

			RAS			VSS0
	SCASA#	17	CAS			VSS1	41
			CAS			VSS1	54
	WEA#	16				VSS2	54
						VSS2
			WE			VDDQ0	3
			WE				3
	CSA#3	19					9
	CSA#3	19	CS			VDDQ1	9
			CS			VDDQ1	43
	DQMA#6					VDDQ2	43
		15				VDDQ2	49
		15	LDQM			VDDQ3	49				C
	DQMA#7	39	LDQM			VDDQ3					C
	DQMA#7	39	UDQM				6
			UDQM			VSSQ0	6
						VSSQ0	12
R181	MAB14					VSSQ1	12
		36				VSSQ1	46
		36	N.C			VSSQ2	46
220/NA		40	N.C			VSSQ2	52
220/NA		40	N.C/RFU			VSSQ3	52
0603B			N.C/RFU			VSSQ3
			SDRAM_2M164/NA
C239			TSOP54					GND
								GND

10P/NA
0603B

D

1

1	C258	1	C260	1	C194
	C258		C260		C194
	0.1U		0.1U/NA		0.1U
2	0603B	2	0603B	2	0603B
2		2		2

2

1	C209	1	C234	1	C237	1	C196	1	C235	1	C208
	C209		C234		C237		C196		C235		C208
	0.1U		0.1U		0.1U/NA		0.1U/NA		0.1U		0.1U/NA
2	0603B	2	0603B	2	0603B	2	0603B	2	0603B	2	0603B
2		2		2		2		2		2

GND

3

4

5

6

D

			MITAC INTERNATIONAL CORP.
	Title	7521 plus
		7521 plus

	Size	Document Number						Rev
	C	SD411670000002						02

	Date:	Tuesday, May 08, 2001		Sheet	10	of	30
7				8

Image 154

MiTAC 7521 PLUS/N service manual 2M X 16 BITS X 4 BANK X 4 = 64M BYTES

Contents

7521 Plus/N SERVICE MANUAL & TROUBLESHOOTINGGG GUIDEGUIDEGUIDE FORFORFORTESTING TECHNOLOGY DEPARTMENT // TSSCTSSC 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 1.2.3 Synthesizer 7521Plus / N N/B MAINTENANCE1.2.2 CPU MODULE 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 CircuitLow Pin Count Interface 7521Plus / N N/B MAINTENANCEAdvanced PCI H/W Audio & Modem Advanced Power Management Integrated DMA ControllerThree 8254 Compatible Programmable 16-bits counters 7521Plus / N N/B MAINTENANCEIntegrated Interrupt Controller Integrated Keyboard ControllerUniversal Serial Bus Host Controller 7521Plus / N N/B MAINTENANCENAND Tree for Ball Connectivity Testing 672-Balls BGA Package 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 TI12251.2.8 Keyboard system H8 3434F universal keyboard controller 7521Plus / N N/B MAINTENANCE1.2.7 DUAL-SLOT PC CARD POWER INTERFACE SWITCH TPS2206 Memory8-bit timer 2 channels 7521Plus / N N/B MAINTENANCE16-bit free-running timer PWM timer 2 channelsCover switch Battery charging control Smart Battery monitoring 7521Plus / N N/B MAINTENANCEPower-down modes 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 IntroductionACPI Power States 7521Plus / N N/B MAINTENANCE1.2.10 POWER MANAGEMENT Summary of Global Power StatesSystem States 1. Working S0 7521Plus / N N/B MAINTENANCESummary of Device Power Sates 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 APM Concept 7521Plus / N N/B MAINTENANCEPower State 1.Full Power 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 Battery Warning 7521Plus / N N/B MAINTENANCEHDD & Video access Suspend to DRAMBattery Warning State 7521Plus / N N/B MAINTENANCECover Switch Battery Low StateLCD Panel 1.5 Peripheral Components7521Plus / N N/B MAINTENANCE 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 CMOS Battery 7521Plus / N N/B MAINTENANCELED Indicators IO portSerial Interface 7521Plus / N N/B MAINTENANCEPCMCIA Socket ‰ 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-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 7521Plus / N N/B MAINTENANCE 2 System View and Disassembly2.0 Tools introduction 1.Minus screw driver with bit size 3mm for CPU assembly & disassembly2 System View and Disassembly 2.1 System View7521Plus / N N/B MAINTENANCE 2.1.1 Front Viewn Power Connector o PS/2 Port 7521Plus / N N/B MAINTENANCEn Battery Pack o CD-ROM/DVD-ROM Drive p IR Port s RJ-45 Connector t VGA Port2.1.5 Bottom View 7521Plus / N N/B MAINTENANCEn CPU Cover o Modem Card Cover p FDD/HDD Module q Battery Pack 2.1.6 Top-Open ViewModular Components NOTEBOOK LCD Assembly Components 2.2 System Disassembly7521Plus / N N/B MAINTENANCE 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 Disassembly7521Plus / N N/B MAINTENANCE 3. Definition & Location Of Connectors / Switches3.1 Mother Board-A J1 Inverter BD CONN J2 LCD panel LVDS connector3. Definition & Location Of Connectors / Switches 3.2 Mother Board Switch Table7521Plus / N N/B MAINTENANCE SW3. CPU & SDRAM Frequency setting table3. Definition & Location Of Connectors / Switches 3.3 Mother Board-B7521Plus / N N/B MAINTENANCE PJ501 Power jack AC adapter3. Definition & Location Of Connectors / Switches 3.4 Daughter Board7521Plus / N N/B MAINTENANCE J1 RJ-11 phone jack for internal modem J23 MDC jump wire connector3. Definition & Location Of Connectors / Switches 3.5 Charger Board7521Plus / N N/B MAINTENANCE J1Charger & Touch-Pad connector to M/B. PJ4Battery pack connectorEasy Start Button Boardside B 3.6 IQSB Board3.7 Easy Start Button Board Easy Start Button Boardside A 7521Plus / N N/B MAINTENANCE7521Plus / N N/B MAINTENANCE 4. Definition & Location Of Major Components4.1 Main Board Side A U13 TPS2206 PCcard Power switch matrix4. Definition & Location Of Major Components 4.2 Main Board SIDE B7521Plus / N N/B MAINTENANCE U502 PH163112 LAN Controller U503 Socket 370 CPU7521Plus / N N/B MAINTENANCE 5. Pin Descriptions Of Major Components5.1 Pentium III/Celeron FC-PGA2 CPU Alphabetical Signal ReferenceSignal Name 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference Signal NameSignal Name 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference Signal DescriptionPWRGOOD Relationship at Power On 7521Plus / N N/B MAINTENANCEAlphabetical Signal Reference PWRGOOD Relationship at Power OnSignal Name 7521Plus / N N/B MAINTENANCEPWRGOOD Relationship at Power On Signal DescriptionSignal Name 7521Plus / N N/B MAINTENANCEPWRGOOD Relationship at Power On Signal DescriptionPower 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset7521Plus / N N/B MAINTENANCE Power5. Pin Descriptions Of Major Components 7521Plus / N N/B MAINTENANCEPower 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset5. Pin Descriptions Of Major Components 7521Plus / N N/B MAINTENANCEPower 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single ChipsetPower 7521Plus / N N/B MAINTENANCEPower management Interface 5. Pin Descriptions Of Major Components5. Pin Descriptions Of Major Components 7521Plus / N N/B MAINTENANCEPower management Interface 5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP Single Chipset 7521Plus / N N/B MAINTENANCE5. Pin Descriptions Of Major Components RTC InterfaceLegacy I/o and Miscellaneous Signals 7521Plus / N N/B MAINTENANCEPower andGroundSignals Power7521Plus / N N/B MAINTENANCE 6. System Block DiagramU2 SH5 7.1 Introduction 7. Maintenance Diagnostics7521Plus / N N/B MAINTENANCE PIO PORT7. Maintenance Diagnostics 7521Plus / N N/B MAINTENANCESYSTEM SOFT BIOS SYSTEM SOFT BIOS 7521Plus / N N/B MAINTENANCE7. Maintenance Diagnostics CODEPIO CONNECTOR 7521Plus / N N/B MAINTENANCE7. Maintenance Diagnostics OR P/N4119048000018.4 EXTERNAL MONITOR NO DISPLAY 8.5 MEMORY TEST ERROR 8. TROUBLE SHOOTING8.1 NO POWER 8.2 NO DISPLAY 8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY 8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR1. Check AC Adaptor 2. Check OUTLET. 3.Check Charge B’D 8.1 NO POWER7521Plus / N N/B MAINTENANCE OUTLETPOWER IN 7521Plus / N N/B MAINTENANCE8.1 NO POWER +S5VSymptom 7521Plus / N N/B MAINTENANCE8.1 NO POWER POWER INSymptom 7521Plus / N N/B MAINTENANCE8.1 NO POWER No powerSymptom 7521Plus / N N/B MAINTENANCE8.1 NO POWER 2. Check the power source from AC adapter. PJ5011. Check if power system is O.K 8.2 NO DISPLAY7521Plus / N N/B MAINTENANCE Reboot and display OK?System Clock Check 7521Plus / N N/B MAINTENANCE8.2 NO DISPLAY U505SH14 TI1225 PCMCIA7521 Power Module 7521Plus / N N/B MAINTENANCEPower Good & Reset System 8.2 NO DISPLAY7521Plus / N N/B MAINTENANCE SIS 630S8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY There is no display or picture abnormal on LCDThere is no display or picture abnormal on LCD 7521Plus / N N/B MAINTENANCE8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY VGA CONTROLLER FAILURE7521Plus / N N/B MAINTENANCE U24 SIS 630S8.4 EXTERNAL MONITOR NO DISPLAY There is no display or picture abnormal on CRT monitorThere is no display or picture abnormal on CRT monitor 7521Plus / N N/B MAINTENANCE8.4 EXTERNAL MONITOR NO DISPLAY VGA CONTROLLER FAILUREEither on board or extend SDRAM is failure or system hangs up 8.5 MEMORY TEST ERROR7521Plus / N N/B MAINTENANCE Clock SynthesizerEither on board or extend SDRAM is failure or system hangs up 7521Plus / N N/B MAINTENANCE8.5 MEMORY TEST ERROR Correct itError message of keyboard failure is shown or any key doesn’t work 7521Plus / N N/B MAINTENANCE8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR SIS 630STroubleshooting 7521Plus / N N/B MAINTENANCE8.6 KEYBOARDK/B TOUCH-PADT/P , ESB TEST ERROR Replace M/B orAn error message is shown when reading data from CD-ROM drive 8.7 CD-ROM DRIVE TEST ERROR7521Plus / N N/B MAINTENANCE 630SAn error message is shown when reading data from CD-ROM drive 7521Plus / N N/B MAINTENANCE8.7 CD-ROM DRIVE TEST ERROR Replace M/B or into board-level Troubleshooting630S 8.8 HARD DRIVE TEST ERROR7521Plus / N N/B MAINTENANCE +5VSHDDReplace mother BD or into board-level Troubleshooting 7521Plus / N N/B MAINTENANCE8.8 HARD DRIVE TEST ERROR PartsAn error occurs when a USB I/O device is installed 8.9 USB PORT TEST ERROR7521Plus / N N/B MAINTENANCE U24 SIS 630SAn error occurs when a USB I/O device is installed 7521Plus / N N/B MAINTENANCE8.9 USB PORT TEST ERROR Board-level Troubleshooting for USB test error7521Plus / N N/B MAINTENANCE 8.10 AUDIO FAILURESIS 630S No sound from speaker after audio driver is installed8.10 AUDIO FAILURE 7521Plus / N N/B MAINTENANCENo sound from speaker after audio driver is installed AUDIO OUTTroubleshooting for 7521Plus / N N/B MAINTENANCENo sound from speaker after audio driver is installed audio test errorAn error occurs when a mouse or other I/O device is installed 8.11 SIO PORT TEST ERROR7521Plus / N N/B MAINTENANCE SUPER I/OAn error occurs when a mouse or other I/O device is installed 7521Plus / N N/B MAINTENANCE8.11 SIO PORT TEST ERROR Board-level Troubleshooting for SIO test errorWhen a print command is issued, printer prints nothing or garbage 8.12 PIO PORT TEST ERROR7521Plus / N N/B MAINTENANCE LO OPBACK CONNECTOR FOR PIO TESTWhen a print command is issued, printer prints nothing or garbage 7521Plus / N N/B MAINTENANCE8.12 PIO PORT TEST ERROR Board-level Troubleshooting for PIO test errorAn error occurs when a PC card device is installed 8.13 PC-CARD SOCKET FAILURE7521Plus / 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 MAINTENANCEAn error occurs when a PC card device is installed Board-level Troubleshooting for PC CARD test errorPart Number 9. SPARE PARTS LIST-17521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-27521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-37521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-47521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-57521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-67521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-77521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-87521Plus / N N/B MAINTENANCE DescriptionPart Number 9. SPARE PARTS LIST-97521Plus / N N/B MAINTENANCE DescriptionPage DRAWN ISSUES7521 plus R02 DESIGN CHECKC P U CELERON PPGA 370-PIN SOCKET630S-1 630S-2 630S-5 VSS30Page 630S-4 VSSA VSSB VSSC VSSDNever Default mount R48 if TV function requiredTest only 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 MULTIFUNCTION PIN CONTENTS -- 64HIDSEL AD19 SERIAL IRQ/PARALLEL PCI INTERRUPTPOWER SWITCH MATRIX PCCARD SOCKETDVSS1 DVSS2 AVSS1 AVSS2RLINE IN GND1 VCC3GND0 GND2RS232/SIO SUPER I/OHP FIR MODULE HSDL-3600#007 VSS1 VSS2 VSS3 VSS4 VCC1 VCC2AVCC VCCB AVSSUSB CONNECTOR SYSTEM BIOS Slave AddressRESET# Charger board connector PREQ# PULL UP AT CPU7521 plusADINP & DISCHARGE 16.65V ABCDE16.60V 16.70V7521 plus S5VS3VS12V SENSE1 7521 plus 1.5V/1.8VSENSE1+ SENSE2+7521 plus+5V+3V+12VS1.8V2.5V 7521 plusCPU PWR DRAWN ISSUES7521P HDD/FDD BD DESIGNDRAWN DESIGN CHECK ISSUES DESIGN ISSUESDRAWN CHECK54554 DRAWN DESIGN CHECK ISSUES1+60 94240-= -4$+1,511 DRAWN DESIGN CHECK ISSUES=904= Sponsoring Editor Shoestring Tsai Author Richard.Wang SERVICE MANUAL & TROUBLESHOOTING GUIDEIDEIDEFORFORFOR75217521Plulus/Ns/N Assistant Editor Kelly Chiang Publisher MITAC INTERNATIONAL CORP