Acer Extensa 900 Maintenance Manual

                                                                                     MPB Schematic Diagrams  B-13
Figure B-3 MPB Main Board (Motherboard) Logic Diagrams (Sheet 8 of 10)
1
2R47
47R3
  1
2
R48
47R3
 1
2
R49
47R3
 
C12
SC39P
 
C13
SC39P
 
C14
SC39P
  FRAME# DEVSEL#
$PCICLK1
TP355 TP356
TP309
1
2R45
47R3
  1
2
R46
47R3
 C15
SC39P
C16
SC39P IRDY#TRDY#
TP358 TP302
+5V
  
T355
TP-1
T197
TP-1TP355
1394-8
 1 2 3 4 5 6 7 8...

B-14   MPB Schematic Diagrams
Figure B-3 MPB Main Board (Motherboard) Logic Diagrams (Sheet 9 of 10)
+5V
  4
  5 6 1
4
7
U2B
SSHC00
  9
 10
 8 1
4
7
U2C
SSHC00
 12
 13
11 1
4
7
U2D
SSHC00
 1110 1
4
7
U11E
SSHC14  1312 1
4
7
U11F
SSHC14
+5V
+5V
+5V+5V+5VSB
+5V
  12R25
10KR3
  D 2
CLK 3 Q   5
Q  6VCC14
P
R 4
GND 7
C
L
1
U5A
SOHCT74 TP352
+5V  8
 9 1
4
76U22D
SOHC4066
  9
 10 8 1
4
7
U12C
SSHC32
 12
 1311 1
4
7
U12D
SSHC32  12
 1311 1
4
7
U1D
SSHC32+5V
+5V
  12
R26
10KR3 TP303
  12L1
MLB321611
   1
2...

                                                                                     MPB Schematic Diagrams  B-15
Figure B-3 MPB Main Board (Motherboard) Logic Diagrams (Sheet 10 of 10)
T268
TP-1T270
TP-1T271
TP-1T272
TP-1T273TP-1T274
TP-1
T156
TP-1T157
TP-1T158
TP-1T159
TP-1T174
TP-1
T211
TP-1T212
TP-1
T169
TP-1
T215
TP-1T216
TP-1T217TP-1T218
TP-1
AD25PARAD8AD18AD12
IDE_D11IDE_D1IDE_D2IDE_D3IDE_D8
CD_5V 1,2,8
1,2,81,2,8 1,2,8
1,2,8
2,3
2,3
2,3
2,3 2,3
T47
TP-1T48
TP-1T49
TP-1T50
TP-1T51
TP-1T52
TP-1...

B-16   MPB Schematic Diagrams
Figure B-4  MPB VGA Board Logic Diagrams (Sheet 1 of 5)
$VGACLK
2
2CRT_R
CRT_G
DEVSEL#
RGBGND
2
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 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
717273747576777879808182838485868788899091929394959697...

                                                                                     MPB Schematic Diagrams  B-17
Figure B-4  MPB VGA Board Logic Diagrams (Sheet 2 of 5)
3
3 3 3
3
3   1
  2
  3
  4 56 7 8
RP8
SRN33
 
C28
SCD1U
 
C18
SCD1U
 
1
2
3
4   5   6   7   8RP7
SRN33
 
RASA#RASB#CASAH#CASAL#WEA#WEB# PRASA#
PRASB# PCASAH# PCASAL#
PWEA#
PWEB#
C2
SC10U16V
 
C12
SCD1U
 
+5V
VGAPWR
VRAMVCC
DVCC
AVCC
CVCC0
CVCC1
+5V
3VAA[0..8]
V
M
A
D
1V
M
A
D
2V
M
A
D
3V
M
A
D
4V
M
A
D
5V
M
A
D
6V
M
A
D
7V
M
A
D
8V
M
A...

B-18   MPB Schematic Diagrams
Figure B-4  MPB VGA Board Logic Diagrams (Sheet 3 of 5)
VMAD8 VMAD9 VMAD10 VMAD11 VMAD12 VMAD13 VMAD14 VMAD15
VCC   1
DQ0   2
DQ1   3
DQ2   4
DQ3   5
VCC   6
DQ4   7
DQ5   8
DQ6   9
DQ7  10
N.C  11
N.C  12
N.C  13
N.C  14WE
 15
RAS
 16
N.C  17
A0  18
A1  19
A2  20
A3  21
VCC  22VSS44
DQ1543
DQ1442
DQ1341
DQ1240
VSS39
DQ1138
DQ1037
DQ936
DQ835
N.C34
N.C33
N.C32
LCAS
31
UCAS
30
OE
29
A828
A727
A626
A525
A424
VSS23
U12
S256K16-60
 
C42
SCD1U
  VMAD0
VMAD1
VMAD2
VMAD3
VMAD4...

                                                                                     MPB Schematic Diagrams  B-19
)
Figure B-4  MPB VGA Board Logic Diagrams (Sheet 4 of 5)
R4
R5
R6 1
2
3
4
5   6   7   8
  9  10
CP1
SRP1K-2 R0
R1
R2
R3
SUD0
SUD1
SUD2
SUD3
UD0
UD1
UD2
UD3
R7
SUD4
SUD5
SUD6
SUD7
LD0
LD1
LD2
LD3 1
2
3
4
5   6   7
  8   9  10
CP2
SRP1K-2
1
2
3
4
5   6   7   8
  9  10
CP3
SRP1K-2
CHIP CAPACITOR
2   1
2
R2
10R3
 
LP
CLK
  1
32
NF1
STC222B
SB22
 1 2 3 4 5 6 7 8...

B-20   MPB Schematic Diagrams
Figure B-4  MPB VGA Board Logic Diagrams (Sheet 5 of 5)
5VIN 7
3.3VIN 6
SR 8 VCC   2
VCC   3
S1   5
S2   4G
N
D
1
U7
SI9706DY  
  2
  3
 1 1
4
7U9A
SSHC02
 
+5V
+3.3V
VGAPWR
+3.3V
 11
 12
13 1
4
7U9D
SSHC02
 
+3.3V
+3.3V
C4
SC1000P50V3MX
 
C49
SC10U16V
C48
SC1U16V5ZY
VGAPWR
DVCC
Close 105(MGNDC),108(MVCCC) PIN
C50
SCD1U
C6
SCD1U
 
C5
SC10U16V
C14
SCD1U
 
C20
SC10U16V
 
C11
SC10U16V
 
VRAMVCC
Close 66(DVCC)PIN & 63,89(GND)PIN
+5V+3.3V
  12
R31
0R3
  1 2R32
DUMMY-R31
  5
  6...

                                                                                     MPB Schematic Diagrams  B-21
)
Figure B-5  MPB DC In Board Logic Diagrams (Sheet 1 of 1)
  1  2  3  4  5
CN2
PH-JK11
AUD_GND
C3 SC100P25V3KNC4
SC100P25V3KN
C5
SC100P25V3KNC6
SC100P25V3KNDK_PJIN#
  1 2
L4
HF70ACB
  1 2
L5
HF70ACB
LINE_OUT_L
LINE_OUT_R
DK_LINEIN_L
C9 SC100P25V3KN
C11
SC100P25V3KN
  12
L1
HF70ACB
  1  2  3  4  5
CN1
PH-JK11
C7
SC1000P50V3JN
1
2R3
10KR3
  1  2  3  4  5
CN3
P
H
+5V
AUD_GND
1
2
R2
100KR3
C10...

B-22   MPB Schematic Diagrams
Figure B-6  MPB LED Board Logic Diagrams (Sheet 1 of 1)
   
 2
 1
  3
SW1
SW-SPVE1
 
COVER_SW
 1
 2
  3
  4
SW2
SKQGABPOWER_SW2
 
+5VSB
+5V
  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16
 17  18
CN1
MOLEX-CON16
 
M+5V
1   2
CN2MICROPHONE
 
+5V
+5VSB
COVER_SW NLOCK_LED CLOCK_LED
CHARGE_LED STANDBY_LED
HDD/FDD_LED
POWER_SW2
POWER_LED
      
NUMBER LOCK   1 2
LED2
LED-G
    12R3
1KR3
 NLOCK_LED
+5V
POWER LEDCAPS LOCK
  1 2
LED1
LED-G   12
LED3
LED-G
  12
R1
1KR3   1 2
R4...