Samsung SCX-1100 Service Manual page 102

Main Circuit Diagram (5/8)
1
A
SCAN_IA0
SCAN_IA1
SCAN_PHA
B
SCAN_IB0
SCAN_IB1
SCAN_PHB
C
D
30VA
BD1 0,5%
E
1
Samsung Electronics
2 3
5V
30VA
C84
C85
100nF
100nF
GND30
DGND
R82 100
R68 100
C71
R69 100
22pF
5V
U14
TEA3718S
GND30 R67 1K
R54
2.7K
C83 C86
BD5
820pF 820pF
CIB32P600NES
R66
56K
R79
0.5
R70
5V C59 C74
10K
22pF 22pF
30VA
GND30
C75
22pF
DGND C62 C61
100nF 100nF
GND30 GND30
DGND
R48 100
R47 100
R49 C72
100
22pF
U10
TEA3718S
GND30
R53 1K
BD3
CIB32P600NES
C60 R46 C63 R52
820pF 56K 820pF 0.5
GND30
_GPIO_CS
30V 30VB
_RD
BD2 0,5%
_WR
2 3
4
TBDO
TBCLK
_TBCS
C15 C16
22pF 22pF
3.3V
DGND
R20 C26
1K 100nF
30VB
DGND
C29 22uF50V
C25
10nF U4
17E0201
C23
C13
47nF
47nF
SCAN_A
SCAN_NA
SCAN_B
SCAN_NB
GND30
PWM
30VB
DGND
C73
22pF
C36 C22
47nF
47nF
GND30
3.3V
C152
100nF
U22
C74LCX245FT-ELP
DGND
DATA(0:3)
3.3V
C121
100nF
DGND
U18-1
MC74VHC32DR2
DGND DGND
DGND
U18-2
MC74VHC32DR2
4
- This Document can not be used without Samsung's authorization -
5 6
11.75V
L1 150uH
JB27-00001A
D1
C28
SS26 R15 C14 C27
220uF
12K 47nF 100nF
50V
2007-007004 2203-000989
2401-000880
GND30
R7
500ohm
2103-001041
GND30
2
1 3 R14 3K
2007-000842
150uH
GND30 L2
JB27-00001A
D3
ZD2
SS26 C24
1N4735A
R18 47nF
0402-001212
0403-000141
2K
2007-000669
GND30 GND30 R19 2K
2007-000669
LF_A
GND30
LF_NA
LF_B
LF_NB
R31 0.68
R5 0.68 C34 C20 C21 C19
1nF 1nF 1nF 1nF
2007-007845|R6432_RES
GND30 2203-000440
GND30
CR_A
CR_NA
C11 C12
22pF 22pF
2203-000626
GND30
GND30
5V
U17
C108
100nF MM74HCT273WM
_HOOK_OFF DATA(0:7)
_RING_DET
DGND
(Unused)
ED. 1 01.08.06
DATE
SIGN
C
A E
H
R N
E
P G
C
. .
K
REF NO SEC
5 6
SCHEMATIC DIAGRAMS
7
A
R388 0
ZD1
1N4743A
R387 0
0403-000150
R4 0
R6 0
GND12
5V
C40
C41
100nF R389 0
470uF
16V
2401-001363
R39 0
B
GND30
DGND
C
5V
R81
10K
TONE_CTL
DP
_CML_ON
RECALL
TX_CTL
RX_CTL
_SPK_CTL D
E_DP
E
2 3
D
SCX-1100
W
Main Board
G
. REV 0.2
DRIVER
5/8
Repair Manual
4-5