Service manual
1
2
3
4
5
B
C
B – 20
Diagrams
B
KBC H8
REV. 2
FIG. B  19
Keyboard
+5V
+3VH8
+3VH8
+5VH8
+3VH8
+3VH8
+3VH8
+3VH8
+3H8
+12V
+5VH8
+3VH8
+3V
+3V
+3VH8
+3VH8
+3V
+3VH8
+3VH8
SA214,16,18
IOR#14,16,18
IO W#14,16,18
KB_S MCLK2,23
KB_SMDAT A2,23
BAT T MP23
BAT VOLT23
LED_DAT A022
LED _CL K22
SCI# 15
IRQ1 15,16
IRQ 12 15,16
BRIGHT NESS11
SD[0..7]14,16,18
CHGEN 23
BATT YPE 23
EXT FDDEN# 19,22
RCIN# 14
WA K E-UP 15
LID-R SUM #11,23
PWRSW#22
ACIN 22,23
PME# 24,25
FAN_EN 21
HBEEP 21
DDON 22,23
BATT _FULL23
EXT SMI# 15
TPADCLK21,23
TPADDATA21,23
PS2CLK121
PS2DAT A121
PS2CLK221
KBCCS#14
ECCS#14
PS2DAT A221
A20G AT E14
COM_RING19
PCM_RING#24
H8_RESET# 22
CURSEN23
SUSC#15
SUSB 23
3S2P_O N 23
SUSB# 3,5,6,9,14,15,19,23
H8CO NST RAST11
G_VRCHGNG# 3,15
VO LU M_UP 25
VO LU M_DN 25
KB-SI3
KB-SI3
H8_RESET#
KB-SI5
KB-SO2
KB_PS2CLK1
KB-SI1
KB-SI1
KB-SI0
KB-SI0
KB_T PDAT A
KB-SI4
KB-SO8
KB-SO14
KB-SO15
KB_PS2DAT A1
KB-SI7
KB-SO12
KB_GA20
KB-SO0
KB_PS2CLK2
KB_PS2DAT A2
KB-SO5
RI_WKUP#
KB_T PCLK
KB-SO1
KB-SO9
H8VPP
H8VPP
H8FLASH
PWRSW#
KB-SO7
KB-SI6
KB-SO6
KB-SO10
KB-SO4
KB-SI2
KB-SI2
KB-SO3
KB-SO11
KB-SO13
SD3
SD1
SD4
SD6
SD2
SD0
SD5
SD7
KB-SI4
KB-SI5
KB-SI6
KB-SI7
H8FLASH
KB_ECCS#
KB_KBCCS#
KB_PS2DAT A1
KB_GA20
KB_T PCLK
KB_PS2DAT A2
KB_ECCS#
KB_PS2CLK2
KB_T PDAT A
KB_PS2CLK1
KB_KBCCS#
H8_RESET#
WA T CH -DO G
KBT Y PE
KBT Y PE
RI_WKUP#RI_WKUP#
WA T CH -DO G
U19
Q S 33 84
2 3
5 4
6 7
9 8
10 11
15 14
16 17
19 18
20 21
23 22
1
1312
24
1B1 1A1
1B2 1A2
1B3 1A3
1B4 1A4
1B5 1A5
2B1 2A1
2B2 2A2
2B3 2A3
2B4 2A4
2B5 2A5
OE1#
OE2#GND
VCC
RP61
10P8RX10K
10
9
8
7
6
1
2
3
4
5
C507
.1UF
C508
1U F /16V
R386
100K
R383 10K
R385 10K
R387 100K
R21
100K
R371
100K
C223
.1UF
C509
.1UF
C510
.1UF
C527
.1UF
C522
10UF
C520
.1UF
C516
.1UF
C511
22P F
+
C513
2.2UF
12
C213
22P F
R161
1M
C32
.1UF
R375 10K
R374 10K
PAD
C529
.1UF
PAD
R384
1K
R376
10K
R395
47K
R404
100K
L72
BK1608LL121
1 2
D36
1N4148
12
D34
1N4148
12
D10
1N4148
12
Y4
10MHZ
12
Q42
2SJ190
G
DS
R151
150K
C214
1U F /16V
A/D
D/A
PWM
INTR
I2C BUS
CLKO
Data O
Data I
CLK
U44
H8/ 3434F
5
6
14
13
12
38
39
40
41
42
43
44
45
52
53
54
93
94
95
96
97
98
99
82
83
84
85
86
87
88
89
1
100
7
8
91
90
81
80
69
68
58
57
46
92
71
70
15
37
36
4
59
9
26
27
28
29
32
33
34
35
79
78
77
76
75
74
73
72
67
66
65
64
63
62
61
60
25
24
23
22
19
18
17
16
49
50
51
55
56
2
3
48
47
31
30
21
20
11
10
MD1
MD0
P50/LCMDATA1
P51/LCMDATA0
P52/LCMCLK
P70/BAT T EM
P71/BAT VO LT
P72/CURSEN
P73/KBT Y PE
P74/SY SON#
P75/PME#
P76/CONT RAST
P77/BRIGHT NESS
P43/SCI
P44/IRQ1
P45/IRQ12
P80/SA0
P81/GA20
P82/CS1#
P83/IOR#
P84/IO W#
P85/CS2#
P86/SMBCLK
P30/SD0
P31/SD1
P32/SD2
P33/SD3
P34/SD4
P35/SD5
P36/SD6
P37/SD7
RE SET #
RES ET _O UT #
NMI#
FVPP/ST BY#
PB0/BAT LOW
PB1/BAT FULL
PB2/LBC12.3
PB3/LBC12.6
PB4/ BATT Y PE
PB5/RCIN#
PB6/CHARGEEN
PB7/CHEPRO
AVSS
VSS
VSS
VSS
VSS
AVCC
AVREF
VCCB
VCC
VCC
P60/SENSE0
P61/SENSE1
P62/SENSE2
P63/SENSE3
P64/SENSE4
P65/SENSE5
P66/SENSE6
P67/SENSE7
P10/SCAN0
P11/SCAN1
P12/SCAN2
P13/SCAN3
P14/SCAN4
P15/SCAN5
P16/SCAN6
P17/SCAN7
P20/SCAN8
P21/SCAN9
P22/SCAN10
P23/SCAN11
P24/SCAN12
P25/SCAN13
P26/SCAN14
P27/SCAN15
P90/USBPLUG
P91/RING#
P92/LID#
P93/BAT LT O NE
P94/SY S_ST AT 1#
P95/SY S_ST AT 2#
P96/AC-IN
P97/SMBDAT A
P40/VOLUP
P41/VOLDOWN
P42/SMI#
P46/CONT RAST
P47/BRIGHT NESS
XT AL
EXT AL
PA0/DDON
PA1/H8FLASH
PA2/T PCLK
PA3/T PDAT A
PA4/ MCLK
PA5/MDATA
PA6/KBCLK
PA7/KBDAT A
D13
1N4148
12
PAD
PAD
PAD
R382
10K
Q38
DT D114EK
C
E
B
U31A
74LCX08
1
2
3
14
7
C35
.1UF
U4
7SZ04
2 4
5
3
JINT KB1
SFW-26S-2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
R396 10K
PAD
R146
10K
U15
MAX82 3 S _S OT 23
3
5
2
1
4
MR#
VCC
GND
RE SET #
WDI
WATCH-DOG: 100HZ
KBTYPE 1