Acer 390 Series Service Manual page 194

+5V
U14
1 OUT 8
GND
2 OUT 7
IN
3 OUT 6
IN
4 OC# 5
EN#
1 C3
SCD1U TPS2014
2
C233
C249
ST10U16VBM
1 SCD1U
R208
100KR3
+3.3V
2
3 USB_ON#
1
+5V +5V 1
1 1
R2 R38
100KR3 100KR3
U1
2 2 1
IRED CATH
2
14 IRRX RX OUT
8
IRED ANODE
6
14 IRSEL0 SD/MODE
9
GND PAD
TFDS6000
FIR
21 RING_MODEM
SPKR
3 SPKR
+5V
+5V
1
RZ11
1KR3 U32F
1 4
2
13 12
11 SPKR_OUT
7 SSHCT14
1 CPU_COM
12 SYS_COM
1
R321
DUMMY-R3
2
USBPWR1
1
C24 C216
2 ST100U10VDM SCD1U
1
R17
0R3
RX22 2
1 2
$OVCR#0 3
10KR3
1
R209
DUMMY-R3
2
R194
2
10R6
R193
2
10R6
2
D1
S1N4148
1
7 R1
TX IN
NC 5 1 2
GND 4
VCC 3 DUMMY-R3
GND PAD 10 C30
SC2D2U16V5ZY
GND to pin4
C357
SCD1U
C276 R227 3
1 2 1 Q12
SMPSA13
SCD1U 47KR3 2 2
D10
S1N4148
1
C275
SCD1U
+5V
+5V
+5V
1
C320
R254
U38C SCD1U
1 4 1 0 100KR3
2
9 8 11
7 SSAHCT125
1
R112
DUMMY-R3
2
USBPWR1 23
3,23 USB_OUT/IN
R31
1 2
IRTX 14
1 82R3
R30
100KR3
2
1
C22 C21
2
ST4D7U SCD1U
R4
1 2 FIR+5V
C1 33R5
C29
SCD1U
SCD47U50V6ZY
1
3 FIR_EN#
+5V +5V
2
D11
S1N4148 BZ1
1
1
R228
1 2 2
33R3 BUZZER-3
C269
SC22P
+5V
U32E
1 4
R244 3
10 1 2 1 Q6
2SJ317
100KR3 2
7 SSHCT14 C301
SCD1U
+3.3V
1
R66
100KR3
3,4,23 $USBP00
3,4,23 $USBP01
2
DIRECTLY CONNECTING TO CHASIS ( PIN 6 , 7 )
Q3 2SJ317
+5V
2 3
C2
1 SCD1U
C20
SCD1U
R16
2
10KR3
Title
Size Document Number
A3
Date:
FAN conn.
CN12
1
2
C300
SCD1U CON2-10
CN1
6
USBPWR1 1
2
3
4
5
7
C217 BERG-USB
SC470P
ACER TAIPEI TAIWAN R.O.C
USB & FIR & BUZZER & FAN
390 ACERNOTE LIGHT
REV
96183 SD
August 7, 1997 Sheet 16 of 23