MiTAC 8355 service manual No Display, System Clock Check

8355 N/B MAINTENANCE

8.3 No Display

******System Clock Check******

P2	U503
	AMD-K8
P5	U506
	NB
	VT8385
P7	U16
	ATI M10

P12~14

U20

SB

VT8235

P20	U518
	AC’97 CODEC

CPUCK+		C191	3900P	R88	15	37	P6
	R531
CPUCK-	169	C189	3900P	R86	15	36

GCLK_NB R92 22 7

				R93	22			FS1 48		U9
				R91	22					Clock
66M_AGP								8	Generator
						+3V		+3V		ICS950403
							R279	R722
							4.7K	4.7K
SMB_DATA1		R284		0	R537	0		26
SMB_CLK1		R536		0	R535	0		25
USB_CLK		R78		22				FS3 31
SB_VCLK		R94		22				6
PCI_SB_CLK R73				22				23
14M_SB_APICCLK				R646		0 R90	22	FS2 45
SUSA#			D2					32
14M_SB_IOSC		RLS4148				R97	22	FS0 1
+3V	R868		10K						3	4
		R785		R96				C212		X1
CODEC_XIN		0			0
								6.8P		14.318MHz

U514 P16		U516 P18		U509 P22
CB710		VT6307		Super I/O
180	93		8		20

13PCI_CARD_CLK R89 22

14				R87	22			PCI_1394CLK
								CLK_LPC33											P17
22				R77	22
28				R72	33			LPC_SUPIO											J9
0			0		0		0	100.90			67.27			33.63
				R82											0					MINI-PCI
	17				22			MINI_PCI_CLK						R183			25
		FS3	FS2		FS1		FS0			CPU(Mhz)		HTT(Mhz)		PCI(Mhz)
																				Slot
		0	0		0		1		133.90			66.95		33.48
		0	0		1		0		168.00			67.20		33.60
		0	0		1		1		202.00			67.33		33.67
		0	1		0		0		100.20			66.80		33.40
		0	1		0		1		133.50			66.75		33.38
		0	1		1		0		166.70			67.68		33.34			DEFAULT
		0	1		1		1		200.40			66.80		33.40
		1	0		0		0		150.00			60.00		33.00
		1	0		0		1		180.00			60.00		33.00
		1	0		1		0		210.00			70.00		35.00
		1	0		1		1		240.00			60.00		30.00
		1	1		0		0		270.00			67.50		33.75
		1	1		0		1		233.33			66.67		33.33
		1	1		1		0		266.67			66.67		37.50				+3V
		1	1		1		1		300.00			75.00		37.50		L510
2,9,16,19,29,35,38,43,46											+3.3VCLK				120Z/100M
				C180		C187	C197			C181	C201		C560
				0.1U		0.1U	0.1U			0.1U	0.1U		10U				C553
																	10U
C182				C193		C561	C186			C210	C183
				0.1U		0.1U	0.1U			0.1U	0.1U
6.8P

128