Samsung ML-4500/XEV Service Manual page 100

Schematic Diagrams
Main Circuit Diagram(2/5)
1
C83 C82
3.3V
A(0:18)
A
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
B
A(17)
A(18)
D(0:15)
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
D(8)
D(9)
D(10)
D(11)
D(12)
C
D(13)
D(14)
D(15)
*LD_ON
D
LED_DATAI
LED_PAPERI
LED_ERRORI
LED_TONERI
*KEY_TONER
*KEY_DEMO
*KEY_CANCEL
DCU_DATA
DCU_CLK
COVER_OPEN
FUSER
PPD(0:7)
PPD(0)
PPD(1)
PPD(2)
E PPD(3)
PPD(4)
PPD(5)
PPD(6)
PPD(7)
*STBIN
*SLCTIN
*INIT
*AUTOFD
*FAULT
SELECT
PERROR
BUSY
*ACK
F
EGMOT_PHA
EGMOT_PHB
1
10-2
2 3
C81 C77 C78 C79 C80
GND5
77
A0
78
A1
79 A2
80
A3
82
A4
83
A5
84
A6
85
A7
86
A8
87
A9
88
A10
90
A11
91
A12
92
A13
93
A14
94 A15
95
A16
96
A17
97
A18
98
A19
99
A20
100
A21
59
U1
D0
60
D1
61
D2
62
D3 KS32C65100
63
D4
64
D5
65
D6
66 D7
68
D8
69 D9
70
D10
71
D11
72 D12
73
D13
74
D14
75
D15
29 _PHGA1/PHINA
28
_PHGA2/PHINB
27
_PHGA3/PHINC
26
_PHGA4/PHIND
24
_PHGA5/GPO
23
_PHGA6/GPO
22
_PHGA7/GPO
21
_PHGA8/GPO
20
_PHGA9/GPO
19
_PHGA10/GPO
18 _PHGA11/GPO
17
_PHGA12/GPO
16
_PHGA13/GPO
31
PHOE1/GPIO
32 PHOE2/GPIO
33
PHOE3/GPIO
34
PHOE4/GPIO
35
PHOE5/GPIO
36
PHOE6/GPIO
37
PHOE7/GPIO
38
PHOE8/GPIO
40
PHOE9/GPIO
41
PHOE10/GPIO
42
PHOE11/GPIO
43 PHOE12/GPIO
44
PHOE13/_HOEA
45
PHOE14/_HOEB
46
PHOE15/_HOEC
47
PHOE16/_HOED
142
PPD0
143
PPD1
144
PPD2
145
PPD3
146 PPD4
147
PPD5
148
PPD6
149
PPD7
151
_STROBE
152
_SLCTIN
153
_INIT
154
_AUTOFD
155 _FAULT
156
SELECT
157 PERROR
158
BUSY
159
_ACK
2 3
4 5
C84 C85 C86 C87 C88
GND5
182
_RESET *POR
187
_WTD_OUT/GPO *WTD_OUT
180
CLKOUT/GPO
184
OSCI
185
OSCO
C23 820pF
183
PLL_FIL
RTC_VDD 201
202
RTC_XIN
203
RTC_XOUT
GND5
123
LSU_CLK/GPO EXT_CLK
_HSYNC1/GPI 125
*HSYNC
127
_HSYNC2/GPI
126
_LREADY/GPI *LREADY
129
_VCLK
128
_VDI
122
_VDO1/GPO VDO
121
_VDO2/GPO
200
_XDACK/GPO *USB_DACK
199
_XDREQ/GPI *USB_DREQ
52
_RAS0 *RAS0
53
_RAS1 *RAS1
54
_CAS0 *CAS0
55
_CAS1 *CAS1
49
_RCS0 *ROMCS
_RCS1/GPO 50
51
_RCS2
_OE 56
*RD
57
_WE *WR
+5V
12
_ECS0 *USB_CS
13
_ECS1 +5V
14
_ECS2/GPO
8
_EINT0/GPI *USB_IRQ
R82
9
_EINT1/GPI
10K
10 GND5
_EINT2/GPI
130
_EXWAIT/GPI
162
_IORD/GPO *THV_EA
R100
161
_IOWR/GPO
10K
188
TONE_OUT/GPO
R116 100
137
GIOP0 *EXIT U6
138
1 8
GIOP1
CS
VCC
139
2 7
GIOP2
SK DC
140
3 6
GIOP3
DI ORG
173 4 5
GIOP4
DO GND
174
GIOP5 USB_RST
KM93C66G
175
GIOP6
176
GIOP7 PTL
177
GIOP8 DEV_FUSE
R117 100
178
GIOP9 *NEW_DEVE
179
GIOP10
196
SLED0/GPO FAN
197
CLUTCH
SLED1/GPO
198
SLED2/GPO
1
SVDDA 3.3V FUSER
5
SVSSA
4
SAVRB
2
SAVRT
GND5
208
GAD_IN0 THERM
207
GAD_IN1 THVREAD
206
GAD_IN2 THERM
205
GVRT 3.3V
204
GVSSA
6
CIS_CLK
7
CIS_SI
GND5
3
SAIN
193
TXD0/GPO TXD0
194
RXD0/GPI RXD0
191
TXD1/GPO
192
RXD1/GPI
TXD2/GPO 189
+5V
190
RXD2/GPI
R87 10K
169
TEST0
170
TEST1
171
TEST2
136
ICE/_TRST
R81 10K
132
ICE/TCK
R80 10K
ICE/TDI 133
134 R101 10K
ICE/TDO
R83 10K
135
ICE/TMS
*KEY_TONER
*KEY_DEMO
GND5
*KEY_CANCEL
BIASPWM
THVPWM
*MHV
R115 100
*FEED
R114 100
*PEMPTY
PMOTOR
*EGMOT_B1
*EGMOT_B0
*EGMOT_A1
*EGMOT_A0
4 5
6 7
U4
F3
+5V
MC33269DT
STS104B
1 3
3 IN OUT 2
C76 GND
100nF
1
2
L1
GND5
INSTPAR
GND5
R17 C10
47pF
33
R20 33 R15 1M
B4
GND5
C126 OSC1
220pF
5 8
C103
20MHz
OUT VCC
100nF
OSC4
GND5
20MHz
GND NC
C11 C12
GND5
22pF 22pF
4 1
1
GND5 GND5
GND5
+5V
B5
R120
100
5 8
C90
OUT VCC
C9 100nF
22pF
C20
OSC3
39pF
28.74448MHz GND NC
+24VS
4 1 GND5
GND5
+5V
C105
+5V +5V
100nF
GND5
R85 C24
10K 1nF
GND5
3.3V 3.3V
U3-1
8
3 D4
GND5
1
2
MMSD914T1
R11
4
LM393D
5.6K
D3
R47 R10 R48
MMSD914T1
2K 5.6K 4.3K
GND5
R12
5.6K
D2
3
R86 C113
1
MMSD914T1
10K 10nF
2
Q2
C25
KSC1623-G
1nF
GND5
GND5
+5V +5V +5V
R18
RXD0
R19
TXD0
R98 R99
R97
10K 10K
10K
Engineer:
Drawn by:
C47 C48 C49
R&D CHK:
TITLE:
1nF 1nF 1nF
DOC CTRL CHK:
MFG ENGR CHK:
GND5 GND5 GND5
REV:
DATE : 2000.04.14
6 7
8
3.3V
C1 C124
C89
A
100nF 22uF 33uF
16V
16V
+5V
B
+5V
C
R13
D1
5.6K
MMSD914T1
COVER_OPEN
R28 C40
1.2K 1nF
Q1
KSC1623-G
FUSER_ON
R29
3
1K
D
R46
2
4.7K
GND24 GND24
B2
THERM_A
B1
THERM_B
+5V
E
C104
100nF
CN2-1
GND5
1
2
33
3
33
4
GND5
SAMSUNG
PRINTER DIV
F
APOLLO
Size:
A3
ML-4500
Drawing Number:
0.2
Page: 2
8
Samsung Electronics