MiTAC 7521 PLUS/N service manual Charger board connector, Preq# Pull Up At Cpu

A B C

VDD5S VDD5

D E

4

21 TP_R

20GREEN_LIGHT 12 IQSB0#

21 AC_POWER#

21BATT_R#

17 ROUT+

17 ROUT-

26NiMH/Li#

12,20 BAT_D

20BAT_T

25,26 BATT

2 1

C252

0.1U

0603

50V

1

3

5

7

9

11

13

15

17

19

21

23

25

27

29

31

J514

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

1 HDR/FM/16PX2/1.27MM S-200-0100-321

2

GND1

TP_L	21
YELLOW_LIGHT		20
IQSB1#	12
BATT_LED# 21
BATT_G#	21
LOUT+	17
LOUT-	17
RESET_SW# 20,21
BAT_C	12,20
BAT_V	20

C680

0.1U

0603

50V

23PWR_ON

23 CPU_PWR_ON

VDD5S

20,23 ADEN#

4

	1	JS2			2
							D/PWR_ON 27
			SHORT-SMT1
		JS3
	1			2			D/CPU_PWR_ON 28
		SHORT-SMT1
	1	JS501
				2		VDD5S_P
		SHORT-SMT1
ADEN#		JS502
	1			2			ADEN#_P 25

3

GND

Charger board connector

SHORT-SMT1

3

VCC_CMOS

1 1

R512 R509

1K 1K

0603 0603

2

1

					+5V
			J511
	16	MONO_OUT	1	2				1 R549
			3	4							2
			5	6				4.7K	0603				1
			7	8										R550	1
			9	10
			11	12										10K
			13	14										0603	2
			15	16
													2
		+S3V	17	18
			19	20
6,16	ASDOUT	+3V	21	22	R544			22			0603	ASYNC		6,16
			23	24			1		2
												ASDIN1		6
6,16	ARST#		25	26	R537		1	22/NA	2		0603
			27	28		R535
			29	30	1			2				ABITCLK	6,16
					0/NA	0603B_DFS
			FM/0.8MM/H2.4
			AMP	C-179373						1	C514
			GND								10P
										2	0603
											10%
					GND						GND

C542

12

0.1U

0603

C537

1U

0603

GND

MODEMSPK 16

2

2 2

R511	1	2	47	0603	TCK	2
R510	1	2	47	0603
					TMS	2
					TDI	2

TDO	2
TRST#	2
PRDY#	2
PREQ#	2

PREQ# PULL UP AT CPU

1	1	1	1	1
	R570	R563	R517	R519	R513
	120/NA	330	330	150	680
	0603	0603	0603	0603	0603
2	2	2	2	2
VTT				GND
		VCC_CMOS

1

	MITAC INTERNATIONAL CORP.
Title
	7521 plus
Size	Document Number					Rev
C	SD411670000002					02
Date:	Tuesday, May 08, 2001	Sheet	24	of	30

A B C D E