Service manual

1
2
3
4
5
B
C
B
B – 3
CPU: PENTIUM III
REV. 2
(DIAGRAM 2 OF 2)
FIG. B  2
VCCT
CPUV CC
CPUV CC
VCCT VCCT
+3V
+V_AGPREF
VCCT
+V_CMOSREF
VCCT
+V_GTLREF
+2.5VS
+V_CLKREF
+3VS
+3V
+3VS
+3VS
CP U_T DI 2
CPU _T RS T # 2
CP U_T DO 2
CPU_PREQ# 2
GTL_PRDY# 2
HCLK_ 1 1 3
CPU_P WRG OO D 5,1 5
CP U_T M S 2
CPU_T CK 2
GT L_CP URST # 2, 7
NMI14
INT R14
CPU_I NI T #14
CP U_SMI #14
CP U_ST PCLK #14
SUS_ST 1#9,15
CPU_S T P#15
G_LO/HI#15
CPU_P WRG OO D5,15
GT L_CRES T #7
G_NMI 2
G_INT R 2
G_INIT# 2
G_SMI# 2
G_ST PCLK# 2
G_SUS-ST AT 1# 8, 9
G_CPU-ST P# 13
GHI# 2
G _CPUP WRG D 2
G_VR_HI/LO# 2,4
G_VRCHGNG# 15,20
SUSB#5,6,9,14,15,19,20,23
CVI D0 4
CVI D1 4
CVI D2 4
CVI D3 4
CVI D4 4
NMI
INT R
CPU_I NI T #
CP U_SMI #
CP U_ST PCLK #
SUS_ST 1#
CPU_S T P#
G_NMI
G_INT R
G_INIT#
G_SMI#
G_NMI
G_INT R
G_INIT#
G_SMI#
G_ST PCLK#
G_SUS-ST AT 1#
G_CPU-ST P#
NMI
INT R
CPU_I NI T #
CP U_SMI #
CP U_ST PCLK #
SUS_ST 1#
CPU_S T P#
G_CPU-ST P#
NMI
INT R
CPU_I NI T #
CP U_SMI #
CP U_ST PCLK #
G_SUS-ST AT 1#
CVI D0
CVI D1
CVI D2
CVI D3
CVI D4
CPU_P WRG OO D G _CPUP WRG D
R154 *240
R165
150
R153
*15 0
R152
120
R166
1K
R167 47
R168
47
R155
*24 0
J9
*CO N 12
1
2
3
4
5
6
7
8
9
10
11
12
R164
*1K
T150
T152
T154
T155
T156
T157
T158
T159
T160
T161
T162
T164
T165
T166
T167
T168
T169
T170
T171
T174
T175
T176
T177
T179
R289
2.94K 1%
R290
1.96K 1%
C414
0.1U
C412
0.1U
C415
0.01U
R50
1K 1%
R53
2K 1%
C61
0.1U
C68
0.1U
C64
0.01U
R305
1K 1%
R301
2K 1%
C421
0.1U
C429
0.1U
C428
0.01U
R306
2K 1%
R303
2K 1%
C432
0.1U
C431
0.1U
C430
0.01U
U34 G CL
20
16
22
24
21
17
23
19
13
14
15
29
43
28
44
41
26
25
45
38
37
36
1
4
8
48
2
5
3
11
47
46
10
9
32
12
33
34
35
39
40
7
30
6
18
31
42
27
NMI
INT R
INIT#
A20M#
IGNNE#
SMI#
ST PCLK#
SUSSTAT1#
CPU_S T P#
G_LO/HI#
VR_ON
VGAT E
IGN_VGAT E#
VR100/50#(DEEP_SLEEP)
PLL30/60#(IGN_PLLT MR#)
CRESET #
CLK_ I N
CLK_OUT
CLKEN#(RESERVED)
ST B#
DI N
DOUT
G_NMI
G_INT R
G_INIT#
G_A20M#
G_IGNNE#
G_SMI#
G_ST PCLK#
G_SUSSTA T1#
G _CPU_ST P #
RESERVED
GHI#
CPUP WRG D
VRPWRG D
VRCHGNG#
VR_HI / LO #
LP_TRANS#
RESERVED
RESERVED
RESERVED
V CC3
V CC3
GND
GND
GND
GND
GND
T181
T182
T183
T184
T185
T186
R92 10K
Y2
14.318MHz
1 2
C449
15P
C441
15P
R319 100
T180
R93 0
T151
T153
T163
T173
T178
RP37
*8P4RX0
81
72
6
5
3
4
RP40
*8P4RX0
81
72
6
5
3
4
C445
0.1U
C439
0.1U
RP41
10P8RX4.7K
10
9
8
7
6
1
2
3
4
5
R325 0
T172
R157
1K
R156
1K
U8C
copperm ine
N4
N8
N10
N12
N14
N16
N18
N19
N20
P5
P7
P9
P11
P13
P15
P19
R3
R4
R5
R8
R10
R12
R14
R16
R20
T3
T5
T7
T9
T11
T13
T15
T18
T19
U8
U10
U12
U14
U16
U20
V3
V19
W4
W1 8
Y3
Y9
Y10
Y11
Y12
Y13
Y14
Y15
Y16
Y19
AA4
AA13
AA20
AB3
AB4
AB5
AB9
AB11
AB13
AB14
AB17
AC1
AC2
AC4
AC5
AC10
AC14
AC16
AC18
AC21
AD1
AD2
AD3
AD4
AD5
AD16
AD21
A2
A7
A8
A12
A21
B1
B5
B6
B7
B8
B10
B15
B18
C9
C11
C15
C16
C19
D2
D6
D7
D9
E3
E7
E8
E9
E10
E11
E13
E19
F3
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
F16
F20
G3
G19
H2
H7
H9
H11
H13
H15
H20
J4
J8
J10
J12
J14
J16
J19
K2
K7
K9
K11
K13
K15
K20
L5
L8
L10
L12
L14
L16
L19
M7
M9
M11
M13
M15
M20
N2
N3
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VID4
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VID3
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VID0
VID1
VID2
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
U8D
copperm ine
G6
G7
G8
G9
G10
G11
G12
G13
G14
G15
G16
G17
H6
H17
J6
J17
K6
K17
L6
L17
M6
M17
N6
N17
P1
P6
P17
R6
R17
T6
T17
U6
U17
V6
V7
V8
V9
V10
V11
V12
V13
V14
V15
V16
V17
W6
W7
W8
W9
W1 0
W1 1
W1 2
W1 3
W1 4
W1 5
W1 6
W1 7
Y6
Y7
Y8
AA6
AA7
AA8
AB6
AB7
AB8
AC6
AC7
AC8
AD6
AD7
AD8
A15
A16
A17
C14
D8
D14
D16
E15
G2
G5
G18
H3
H5
J5
M4
M5
P3
P4
AA5
AA19
AC3
AC17
AC20
AD15
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
VCCT
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
D25
*RB751V
12
IN-Target
Probe
GEYSERVILLE CONTROL LOGIC
WITH GEYSERVILLE INSTALL U34 RP41
REMOVE RP37 , RP40 , D 25
W/O GEYSERVILLE INSTALL RP37 , RP40 , D25
REMOVE U34 , RP41
PIII NC PIN :
A15,A16,A17,C14,D8,D14,D16,E15
G2,G5,G18,H3,H5,J5,M4,M5,P3
P4,AA5,AA19,AC3,AC17,AC20,AD15
CPU