MiTAC 7521 PLUS/N service manual plus R02, Drawn, Design Check, Issues

A

B

C

D

1 2 3 4 5

7521 plus R02

	MTG8
	1
	2
	3
	4
	5
	6
	7
	8
	9
	10
	11
	12
	MTG118_N_RD30X12
	GND
MTG14	MTG6
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	11
12	12
MTG118_N_RD30X12	MTG118_N_RD30X12
GND	GND
MTG9	MTG10
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	11
12	12
MTG118_N_RD30X12	MTG118_N_RD30X12
GND	GND

1 2 3 4 5

6			7		8
	REV		DESCRIPTION OF CHANGE	ECR	DATE	APPROVAL
	R00				09/29/2000
	R0B	1.Add 10K ohm pull high resistor between +3v and DS90363 pin 14.			02/01/2001
		2.Add frequency select resistor.
		3.Add ESD solution on PCMCIA socket.
		4.Change test pin resistor of SiS900 form 4.7K to 10K ohm.
		5.Correct autoload pin of SiS900 power form +5V to +S5V.
		6.Add 0 ohm pull high resistor between +S5V and EEPROM pin 6.
		7.Modify Vcc_RTC circuit.
		8.Modify Vmain_PWROK circuit.
		9.Modify Vcc_CORE circuit.
		10.Change SiS900 interrupt from IRQB to IRQC.
		12.Add filter circuit for 25Mhz oscillator.
	R01	1.Add RLZ5.6B between VDD5 to GND.			03/01/2001
		2.Modify GPIO 83601R reset circiut.
		3.Modify CH7005 R-set circiut.
		4.Add LCD panel ID select DIP switch.					A
		5.Modify CRT_ISOLATE circuit.
		6.Modify LM393A circuit for RTC data loss problem.
	R02	1.Add AGPAVDD1 circiut for LCD panel incorrect color.			04/30/2001
		2.Modify "Enable_VGA AND PCI_RST#" circuit.

B

	MTG1
	1			L520
	2		1		2
	3
	4		BEAD_120Z/100M
	5
	6
	7			L517
	8		1		2
	9
	10		BEAD_120Z/100M
	11
	12
	MTG118_N_RD30X12	GND_D
	GND
	MTG7								C
	1		MTG12		MTG13
	2
			ID2.1/OD5.0		ID2.1/OD5.0
	3
	4
	5
	6		1		1
	7
	8
	9		GND		GND_D
	10
	11
	12
	MTG118_N_RD30X12
GND_D
		FD502		FD2		FD1		FD4
	MTG11	FD_DOT040		FD_DOT040		FD_DOT040		FD_DOT040
	1
	2	1		1		1	1
	3
	4
	5
	6
	7	FD504		FD503		FD501		FD3
	8
		FD_DOT040		FD_DOT040		FD_DOT040		FD_DOT040
	9
	10
	11
	12	1		1		1	1
	MTG118_N_RD30X12								D
GND
DRAWN	DESIGN CHECK	ISSUES
		Title		MITAC INTERNATIONAL CORP.
			7521 plus
		Size	Document Number						Rev
		C	SD411670000002						02
		Date:	Tuesday, May 08, 2001			Sheet	1	of	30
6		7				8