Service manual

Schematic Diagrams
KBC-ITE IT8502E B - 29
B.Schematic Diagrams
KBC-ITE IT8502E
KBC_HOLD#
KBC _SPI_CE#
KBC _SPI_SCLK
0V
RX
SM D_BAT
SM C_BAT
RN 19
2. 2K_4P2R_04
14
23
3G _D ET#
EC _VC C
P CLK_KBC
VCH G_SEL37
BAT_DET37
0 _0 4 FO R I T8 51 2CX /E X
0 .1 U_ 04 FO R IT E85 12 -J (I TE8 50 2- J W/ 0 CI R)
E C Co st Do wn
KB-SO6
KB-SI7
KBC_SPI_SCLK
CK32KE
KB-SI0
KB-SI3
KB-SI1
KB-SO1 1
KB-SO1 5
KB-SO4
KB-SO7
KB-SO0
KB-SO1 0
KB-SO5
KB-SO2
PCLK_KBC_R
KBC_SPI_SO
KB-SO3
KB-SO8
KB-SI4
KB-SO1
KB-SO1 3
KB-SI2
KB-SO1 2
KBC_SPI_SI
KB-SI5
KB-SI6
KB-SO1 4
KB-SO9
KBC_ SPI_ CE#
CK32K
MCH_TSATN_EC
L C D_ BRIG HTNE SS
R173 *0_04
H_PECI4,19
SM C_CPU _ TH ERM
R 165 * 10M_04
R 143 10K_04
C224
1u_6.3V_X5R_04
C236
0.1u_10V_X7R _04
C231
12p_50V_NPO_04
.
L18
HC B1005KF-121T20
C228
0.1u_10V_X7R _04
C219 *0.1u_10V_X5R_04
R160 *10_04
C2 37
0.1u_10V_X7R _04
3G _D ET#
S5_LANO N
BAT_ VOLT
.
L17
H CB1005KF-121T20
K/B MATRIX
FLASH
LPC
SMBUS
PS/2
PWM
UART
DAC
CLOCK
IT8502E
CI R
ADC
WAKE UP
PWM/COUNTER
LPC/WAKE UP
EXT GPIO
GP INTERRUPT
WAKE UP
GPIO
U12
IT8502E-J
WRST#
14
LP CCL K
13
LA D 0
10
LA D 1
9
LA D 2
8
LA D 3
7
LF R A M E #
6
( PD )L PCPD #/W UI6/GPE6
17
SERIR Q
5
ECSM I#/GPD 4( PU )
15
ECSC I#/GPD 3( PU )
23
GA20/GPB5
126
KBRST# /GPB 6( PU )
4
KSI0/ STB#
58
KSI1 /AF D#
59
KSI2 /IN IT#
60
KSI3 /SL IN#
61
KSI4
62
KSI5
63
KSI6
64
KSI7
65
KSO0 /PD0
36
KSO1 /PD1
37
KSO2 /PD2
38
KSO3 /PD3
39
KSO4 /PD4
40
KSO5 /PD5
41
KSO6 /PD6
42
KSO7 /PD7
43
KSO8/ACK#
44
KSO9/BU SY
45
KSO1 0 /PE
46
KS O11/E RR#
51
KSO 12/SLCT
52
KSO 13
53
KSO 14
54
KSO 15
55
VCC
11
VS TBY
26
VSTBY
50
VS TBY
92
VSTBY
11 4
VSTBY
12 7
VST BY
121
VBAT
3
AVC C
74
PS2CLK0/GPF0( PU )
85
PS2DAT0/GPF1( PU )
86
PS2CLK1/GPF2( PU )
87
( PD )TM RI0/W U I2/G PC4
120
( PD )TM RI1/W U I3/G PC6
124
LP CRST # /W U I4/G PD2 ( PU )
22
( PD )W UI5 /GPE5
35
PW RSW /GPE4 ( PU )
125
RI1# /W UI0/G PD0( PU )
18
RI2# /W UI1/G PD1( PU )
21
( PD )RIN G# /PW R F AIL #/ LPC RST # /GPB7
112
TX D / G P B 1 ( P U )
109
RXD/G PB0 ( PU )
108
( PD )CTX/GPB2
123
PS2DAT1/GPF3( PU )
88
PS2CLK2/GPF4( PU )
89
PS2DAT2/GPF5( PU )
90
( PD )TACH 0/G PD6
47
( PD )TACH 1/G PD7
48
PW M0/G PA0( PU )
24
PW M1/G PA1( PU )
25
PW M2/G PA2( PU )
28
PW M3/G PA3( PU )
29
PW M4/G PA4( PU )
30
PW M5/G PA5( PU )
31
PW M6/G PA6( PU )
32
PW M7/G PA7( PU )
34
ADC 0/G PI0
66
ADC 1/G PI1
67
ADC 2/G PI2
68
ADC 3/G PI3
69
ADC 4/G PI4
70
ADC 5/G PI5
71
ADC 6/G PI6
72
ADC 7/G PI7
73
VS S
1
VSS
12
VS S
27
VSS
49
VSS
122
VSS
11 3
AVSS
75
CK 32 KE
2
CK32K
128
DAC 3/G PJ 3
79
DAC 2/G PJ 2
78
DAC 1/G PJ 1
77
DAC 0/G PJ 0
76
( PD )EG CS#/GPE2
83
( PD )EG CL K/GPE3
84
( PD )EGA D /GP E 1
82
GIN T/G PD5 ( PU )
33
L80LLAT/G PE7( PU )
20
VSS
91
DAC 5/G PJ 5
81
DAC 4/G PJ 4
80
PW UR EQ#/G PC7 ( PU )
16
( PD )CR X/G P C0
119
( PD )KS O1 6/G P C3
56
( PD )KS O1 7/G P C5
57
( PD )ID 0/G PH0
93
( PD )ID 1/G PH1
94
( PD )ID 2/G PH2
95
( PD )ID 3/G PH3
96
( PD )ID 4/G PH4
97
( PD )ID 5/G PH5
98
( PD )ID 6/G PH6
99
( PD )ID 7/G PG1
107
SMC LK0/G PB3
110
SMD AT0 /G PB4
111
SMC LK1/G PC1
115
SMD AT1 /G PC2
116
SMC LK2/G PF6( PU )
117
SMD AT2 /G PF7( PU )
118
FLFRAM E#/G PG2
100
FLAD0/SCE#
101
FLAD1/SI
102
FLAD 2/SO
103
FLAD 3/G PG6
104
FLCLK/SCK
105
( PD )FL RST # /W UI7 /TM/G PG0
106
( PD )L80HLAT/GPE0
19
R149 *10K_04
C233 0.1u_10V_X7R _04
C232
*0.1u_10V_X5R_04
R153 10K_04
LAN_CABLE_DE TEC T
C209
1u_6.3V_X5R _04
80DET#
BA T_ VO LT
C20 3
0.1u_10V_X7R_04
PC LK_K BC
R164 *0_04
C238
12p_50V _N PO_04
KB C_ W RESE T#
CUR_SENSE_R
C229
*0.1u_10V_X5R_04
N C3 SHO RT
L C D_ BRIG HTNESS
R154
100K_04
C223
* 10p_50V_NP O_06
KB C_ BEEP
3IN 1
R 146 10K_04
LOW ACTIVE
SM D_BAT
MOD EL_ID
80CLK
SM C_BAT
C243
10u_6. 3V_X5R_06
BAT_VOLT37
CCD_DET#
BA T_ DE T
C240
0.1u_10V_X7R_04
C216
0.1u_10V_X7R _04
VDD 3
KBC _AVD D
VD D3
VDD 3
KBC_AGN D
KBC _AG ND
VDD 3
3.3VS
SCI# 19
DD _O N 31
SWI# 16
SMI# 19
KBC_R ST# 1 9
EC MODULE CHOOSE (FOR DIFFERENCE K/B TYPE)
VCO RE_O N 36
CH G_EN 37
PWR _BTN # 16
3G_EN 24
CC D_EN 24
RSM RST# 1 6
WLAN_DE T# 23
3.3V S 2,10,11,12,13, 14,15,16,17,18,19,20,21,23,24,25,26,27,29,30,31,35,36
CPU _ FANSEN 3 0
VDD 3 14,23,25,29,31,32,37
SUSC # 16,33
ALL_SY S_PW RG D 12 ,16
BT_D ET# 29
AC_PR ESENT 16,18
BRIG HTNES S12
SUSB # 16,23,31
SUS_PW R _ ACK 1 6
TH ERM _A LER T#3
DD _O N_L ATCH 31
CCD _ DET #24
LID_SW#12,30
W EB_W W W #30
AP _KEY #30
LPC _AD 014,24
TP_DATA30
W EB_E MAIL#30
LPC _AD 114,24
LPC _AD 214,24
SERIR Q14,24
LPC_FR AME#14, 24
SM D_BAT37
SM C_BAT37
L ED_ PW R#29
TP_CLK30
LPC _AD 314,24
LED _B AT_C HG#29
LED_C AP#29
LE D _ B A T _F U L L#29
LED_N UM#29
KBC _MUTE#27
LED_SCR OLL#29
PW R_SW #31
PCLK_KBC18
BUF_PLT_R ST#4,18,23,25
AC_IN #37
LE D _ A C I N #29
3G_DE T#24
PM E#18
WLAN _EN23,29
CPU _F A N30
GA2 019
BK L_EN12
BT_EN23,29
CCD_DET#
80DET#23
3I N 123
80 C L K23
SM D_CPU _TH ERM3,15
3G_POWER24
SM C_CPU _TH ERM3,15
ME _ W E # 14
TH E R M _V O L T3
J_ K B 1
85201-24051
24
23
22
14
12
11
21
8
20
19
6
5
18
4
17
10
9
7
3
2
1
16
15
13
R348 *15mil_short_06
X2
C M200S327681220_32.768KHz
1 4
32
VD D3
VDD3
MO DE L _ I D
LA N_PCIE_W AKE#25
MO DE L_I D
3. 3VV1.0
E4120
R1 53 10 K/ R 149 X
VER. VOLTAGE
R1 53 X /R 14 9 1 0K
SM D_CP U_ TH ERM
SM C_CP U_ TH ERM
1
J_KB1
24
EC _VS S
R147 * 10m il_short
S5_LAN ON25
RX
K BC_ BEEP27
KBC_W R ESET#
51 2K bit
RN 17
15_4P2R _04
1 4
2 3
RN 18
15_4P2R _04
1 4
2 3
R131 1K_04
K BC_ FLASH
C 197 *33p_50V_N PO_04
C 198 *33p_50V_N PO_04
C 226 *33p_50V_N PO_04
R158 4.7K_04
U9
EN25P05-50GC P
CE#
1
SO
2
WP #
3
VSS
4
SI
5
SCK
6
HOLD#
7
VD D
8
C210
0.1u_10V_X7R _04
C 227 *33p_50V_N PO_04
VDD 3
KBC _SPI_SO
???
KBC_SPI_SI_R
KBC_SPI_SO_R
KBC_SPI_*_R = 0.1"~0.5"
KBC_SPI_CE#_R
KBC_ SPI_ SCL K_ R
KBC _SPI_SI
Sheet 28 of 40
KBC-ITE IT8502E