Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual page 311

Main PCB Circuit Diagram (3/6)
1 2
ROM, Board id, Debug Serial I/F
ROM0_CS_N
1-3A
TP359
ROM1_CS_N
1-3A
A
TP316
IO_WR_N
4-1A/1-3A
TP344
IO_RD_N
4-1A/1-3A
TP242
RESET_N
5-5E/1-1A/1-6B
FLASH or P2(64Mbit)
(128M/ 64Mbit )
U9
32 43
CE VCC +3.3V
13 29
WE VIO
34 C129
OE
C104
16 52
+3.3V WP/ACC VSS_52
33
VSS_33 SGND
53
+3.3V BYTE
14
RESET
R193 TP322
1k
17
RY/BY
31
ADR[1] TP340
B A0
ADR[2] 26
A1
25 27
ADR[3]
A2 NC27
24 28
ADR[4]
A3 NC28
ADR[5] 23 30
A4 NC30 SGND
22
ADR[6]
A5
ADR[7] 21
A6
20
ADR[8]
A7
10
ADR[9]
A8
9
ADR[10]
A9
8 35 DATA[0]
ADR[11]
A10 DQ0
ADR[12] 7 37 DATA[1]
A11 DQ1
6 39
ADR[13] DATA[2]
A12 DQ2
5 41 DATA[3]
ADR[14]
A13 DQ3
4 44
ADR[15] DATA[4]
A14 DQ4
3 46 DATA[5]
ADR[16]
A15 DQ5
ADR[17] 54 48 DATA[6]
C
A16 DQ6
19 50 DATA[7]
ADR[18]
A17 DQ7
ADR[19] 18 36 DATA[8]
A18 DQ8
11 38
ADR[20] DATA[9]
A19 DQ9
12 40 DATA[10]
ADR[21]
A20 DQ10
15 42
ADR[22] DATA[11]
A21 DQ11
2 45 DATA[12]
ADR[23]
A22 DQ12
ADR[24] 1 47 DATA[13]
A23 (NC) DQ13
56 49
DATA[14]
NC56 DQ14
55 51 DATA[15]
SGND NC55 DQ15/A-1
S29GL128N90TFIR20H
ADR[24-1]
4-1C/1-3A
DATA[15-0]
4-1E/1-1A
D
+3.3V
10k R149 10k
ADR[1] ADR[1] R148
10k R136 10k
ADR[2] ADR[2] R135
10k 10k
R129 ADR[3] ADR[3] R128
10k R137 10k
ADR[4] ADR[4] R138
10k R139 10k
ADR[5] ADR[5] R140
10k 10k
R141 ADR[6] ADR[6]
R142
10k R143 10k R144
ADR[7] ADR[7]
10k R145 10k
ADR[8] ADR[8] R146
10k R171 ADR[9] ADR[9] 10k R172
10k R169 10k R170
ADR[10] ADR[10]
10k R167 10k R168
ADR[11] ADR[11]
E
10k R165
ADR[12] ADR[12] 10k R166
10k R163
ADR[13] ADR[13] 10k
R164
ADR[14] 10k R162
ADR[15] 10k R161
10k R159
ADR[16] ADR[16] 10k
R160
10k R123
ADR[17] ADR[17] 10k R124
ADR[18]
10k R158
10k R175
ADR[19]
10k R197
ADR[20] ADR[20] 10k R196
10k
R201 ADR[21] ADR[21] 10k
R200
1k R228 ADR[22] ADR[22] 10k
R199
TP501
10k R155
ADR[23] ADR[23] 10k R156
10k
R184 ADR[24] ADR[24] 10k
R192
F
TP289
SGND
1 2
3 4
ROM0
IO_WR_N
IO_RD_N
RESET_N
P2ROM
(128/64Mbit)
MIRROR FLASH
(128Mbit/ 64Mbit )
U11 U5
24 37 32
CE VCC37 +3.3V CE VCC
38 13
VCC38 WE VIO
27 34
OE OE
25
VSS25
C139
1 26 16
C104
+3.3V BYTE VSS26 +3.3V WP/ACC VSS_52
VSS_33
47 53
VSS47 +3.3V BYTE
23 48 14
ADR[1]
A0 VSS48 SGND RESET
22
ADR[2] R119 TP114
A1
1k
ADR[3] 21
A2 RY/BY
20 31
ADR[4] ADR[1]
A3 A0
19 ADR[2] 26
ADR[5] TP214
A4 A1
18 25
ADR[6] ADR[3] TP164
A5 A2 NC27
17 ADR[4] 24
ADR[7] TP352
A6 A3 NC28
ADR[8] 16 28 DATA[0] ADR[5] 23
TP161
A7 D0 A4 NC30
10 30 DATA[1] ADR[6] 22
ADR[9] TP165
A8 D1 A5
ADR[10] 9 32 DATA[2] ADR[7] 21
TP166
A9 D2 A6
8 34 20
ADR[11] DATA[3] ADR[8] TP167
A10 D3 A7
7 39 DATA[4] ADR[9] 10
ADR[12] TP168
A11 D4 A8
6 41 9
ADR[13] DATA[5] ADR[10]
TP276
A12 D5 A9
5 43 DATA[6] ADR[11] 8
ADR[14] TP275
A13 D6 A10 DQ0
ADR[15] 4 45 DATA[7] ADR[12] 7
TP274
A14 D7 A11 DQ1
3 29 6
ADR[16] DATA[8] ADR[13] TP273
A15 D8 A12 DQ2
2 31 DATA[9] ADR[14] 5
ADR[17] TP294
A16 D9 A13 DQ3
15 33 4
ADR[18] DATA[10] ADR[15] TP293
A17 D10 A14 DQ4
14 35 DATA[11] ADR[16] 3
ADR[19] TP272
A18 D11 A15 DQ5
ADR[20] 11 40 DATA[12] ADR[17] 54
TP271
A19 D12 A16 DQ6
13 42 DATA[13] ADR[18] 19
ADR[21] TP134
A20 D13 A17 DQ7
ADR[22] 12 44 DATA[14] ADR[19] 18
TP253
A21 D14 A18 DQ8
36 46 11
ADR[23] DATA[15] ADR[20] TP277
A22 D15/A-1 A19 DQ9
ADR[21] 12
TP313
MR27V12850J-034TN A20 DQ10
15
ADR[22]
TP309
A21 DQ11
ADR[23] 2
TP308
A22 DQ12
1
TP240
A23 (NC) DQ13
56
NC56 DQ14
55
SGND NC55 DQ15/A-1
S29GL128N90TFIR20H
ADR[24-1]
DATA[15-0]
3 4
6-3
5 6
ROM1
ROM1_CS_N
JTAG
CN6
P2ROM
(128/64Mbit)
1
GND
U6
43 24 37
+3.3V CE VCC37 +3.3V
29 38 3
DCK
VCC38
C132
27
C104
OE
25 5
DMS
VSS25
C138
52 1 26
C104
+3.3V BYTE VSS26
33 7
DDI PORT1_OUT
SGND
47
VSS47
23 48
ADR[1] DDO 9 PORT2_OUT
A0 VSS48 SGND
22
ADR[2]
A1
17 ADR[3] 21
A2
TP129 20 11
ADR[4] Reserved1 NC PORT3_OUT
A3
19 13
ADR[5] Reserved2 NC PORT1_IN
A4
27 18 15
ADR[6] Reserved3 NC PORT2_IN
A5
28 17
ADR[7]
A6
30 ADR[8] 16 28 DATA[0] TRCCLK 17 PORT3_IN
SGND A7 D0
10 30 DATA[1]
ADR[9]
A8 D1
ADR[10] 9 32 DATA[2] 19
TRCEND
A9 D2
8 34
ADR[11] DATA[3]
A10 D3
7 39 DATA[4] 21
ADR[12] TRCDATA0 TRCDATA8
A11 D4
6 41
ADR[13] DATA[5]
A12 D5
35 5 43 DATA[6] 23
DATA[0] ADR[14] TRCDATA1 TRCDATA9
A13 D6
37 ADR[15] 4 45 DATA[7]
TP215 DATA[1]
A14 D7
39 3 29 25
TP195 DATA[2] ADR[16] DATA[8] TRCDATA2 TRCDATA10
A15 D8
41 2 31 DATA[9]
TP196 DATA[3] ADR[17]
A16 D9
44 15 33 27
TP197 DATA[4] ADR[18] DATA[10] TRCDATA3 TRCDATA11
A17 D10
46 14 35 DATA[11]
TP218 DATA[5] ADR[19]
A18 D11
48 DATA[6] ADR[20] 11 40 DATA[12] TRCDATA4 29 TRCDATA12
TP205
A19 D12
50 13 42 DATA[13] 31
TP206 DATA[7] ADR[21] TRCDATA5 TRCDATA13
A20 D13
36 ADR[22] 12 44 DATA[14] 33
TP216 DATA[8] TRCDATA6 TRCDATA14
A21 D14
38 36 46 35
TP225 DATA[9] ADR[23] DATA[15] TRCDATA7 TRCDATA15
A22 D15/A-1
40 37
TP208 DATA[10] GND
MR27V12850J-034TN
42
DATA[11]
TP224
45
TP207 DATA[12]
47
TP223 DATA[13]
49
TP232 DATA[14]
51
TP222 DATA[15]
TP231
(Yellow)
@CN10
1
DBRXD
2
DBTXD
B2B-PH-K-Y(LF)(SN)
(Green)
@CN9
1
PHTXD
2
PHRXD
B2B-PH-K-M(LF)(SN)
(Pink)
@CN8
1 5V
+5.0V
2
SGND GND
B2B-PH-K-PK(LF)(SN)
5 6
7 8
A
+3.3V
RA45
10k
SGND
2
GND
JTAG_CK
1-7A
4 TP92
VCCIO
+3.3V
JTAG_MS
1-7A
6 TP101
DRST- JTAG_RST
1-7A
TP162
JTAG_DI
R22 1-7A
8 TP91
JTAG_RMODE/BKTGIO
1-7B
33
TP100
JTAG_DO
1-8A
10 R16 TP83
NC 33
R23
4.7k
12 SGND
NC
B
14
NC
16
NC R15
33
NTRC_CLK
1-8A
TP96
18 R14
NC
33
NTRC_END
1-8A
20 TP82
TRCCE NC
22
1-8A
NTRC_DATA[3-0]
RA3
33
NTRC_DATA[0] NTRC_DATA[0]
24 4 5
3 6 NTRC_DATA[1] NTRC_DATA[1]
TP75
NTRC_DATA[2] NTRC_DATA[2]
26 2 7 TP81
1 8 NTRC_DATA[3] NTRC_DATA[3]
TP74
28 TP80
30 NTH
C
32
34
36
38 GNDX5
GND
SGND
2-767004-2
@U10
+3.3V
5
VCC +3.3V
D
@R34
1 3
10k B GND SGND
2 4
A Y DEBUG_RXD
1-4B
TC7SH08FU(F) TP307
(FCT)
(SSOP5)
5V->3.3V Level
DEBUG_TXD
1-5B
TP305
(FCT)
DEBUG_PHOTO_TXD
1-5B
U8
5
VCC +3.3V
1 3
B GND SGND
2 4
R33
A Y DEBUG_PHOTO_RXD
1-4B
10k
TC7SH08FU(F) TP244
E
SGND
R224
0
F
CODE LM9444-001
CIR B512246 (3/6)
NAME
7 8
Confidential