Service manual

1
2
3
4
5
B
C
B – 22
Diagrams
B
POWER BUTTON & LED
3V H8 & LED
REV. 2
FIG. B  21
power
+3VH8+5VH8
+5VH8
+3VS
+3VS
+3VS
+3VS
+3VH8
VA
+5V
VIN
+5VS
+3VS
+3VH8
+3VH8 +3VH8
+3VH8
+3VH8
PIDEACT#17
LED_DAT A020
LED_CLK20
H8_RESET #20
DDON20, 23
PWRBTN#21
PWRSW# 20
DRV0#17, 18
LPT S T RO BE #18, 19
EXT FDDEN#19 , 20
ACIN20, 23
FORCEDOWN23
DDON 20,23
BAY LEDEN#17
PIDEACT#
PIDEACT#
SCRO LL_LED#
CAP_LED#
NUM_LED#
POWERSUS_LED#
SCRO LL_LED#
CAP_LED#NUM_LED#
ACIN
AC/CHARGER_LED#
POWERSUS_LED#
AC/CHARGER_LED#
BAT T _LED#
BAT T _LED#BAT T _LED#
D33
TL431
3
1
2
D35
ZD5.6V
1 2
R392
330
R402
3.3 K 1%
R405
10K 1%
R401
10K
R398
10K
R379
56K
R380
10K
Q37
1198
B
E C
Q41
1198
B
E C
C531
10UF/16V
C526
10U
D5
LED
12
47K
47K
Q4
DT A114EUA
C
B
E
D3
LED
12
D4
LED
12
R7
680
R1
680
R8
680
D1
LED
12
R4
680
R189
680
D16
LED
12
T103
PAD
T102
PAD
Q43
2N7002
G
DS
D30
1N4148
1 2
D31
1N4148
1 2
Q21
2SC4672
B
EC
C532
.1UF
Q19
2N7002
G
DS
R180
100K
R181
68K
C220
1UF/16V
U23C
74HCT 125
9 8
14 10
7
D2
LED
12
R5
680
47K
47K
Q3
DT A114EUA
C
B
E
U18
74LV 164
1
2
8
9
3
4
5
6
10
11
12
13
147
A
B
CLK
CLR
QA
QB
QC
QD
QE
QF
QG
QH
VCCGND
Q23
DT D114EK
C
E
B
47K
47K
Q6
DT A114EUA
C
B
E
47K
47K
Q28
DT A114EUA
C
B
E
47K
47K
Q5
DT A114EUA
C
B
E
U45
AS2951
8
7
6
5 4
3
2
1
INPUT
FB
VCC
ERRO R GND
S.D
SENSE
OUTPUT
C229
1U/50V
C523
**. 1UF
R403
680
R191
680
Q26
DT D114EK
C
E
B
D17
DLED
34 12
Q25
DT D114EK
C
E
B
R190
680
D18
LED
12
Q24
DT D114EK
C
E
B
R400
*1K
U23D
74HCT 125
12 11
14 13
7
HDD
LED
FDD
LED
GREEN LED
OR AN GE LED