Brother HL-5240 Service Manual page 322

Appendix 1. Main PCB Circuit Diagram, HL-5240/5250DN/5270DN/5280DW (5/7)
1
2
Other PCB I/F Conector (LVPS HVPS LD PANEL RELAY_F RELAY_R TNR_SEN DX_SOL LT(opt.)
A
RLYOFFN
1-6E
TP161
HEATERON1
1-6C TP267
HEATERON2
1-4C
A3.3V
C101
R142
680
U7
TP156
1%(F)
HEATER HARD-LIMIT +
3
295
3.3V R141 -
2 LM393PT
0V HARD LIMIT ON
18k
1%(F)
+5.0V
SGND
U7 THM_CENTER
8
1-7A/7D
B V+
C206
C103
V-
LM393PT 4 A3.3V
R161
SGND
1.2k
U7
1%(F) TP106
HEATER HARD-LIMIT
308 +
5
3.3V
0V HARD LIMIT ON R160 -
18k 6 LM393PT
1%(F)
SGND
THM_EDGE
1-7B/7D
C
TP449
R17
FB_VCLN
1-7B
C72
C102
SGND
TP397
R13
FB_DEV
1-7B
C73
C102
SGND
TP448
GRIDC
TP399
1-6C
FB_GRID
TP446
1-7B
FB_TRCCV
TP447
1-7C
FB_TR
1-7C
C85 C84 C70
C83
SGND
C102
HVVCLN
1-4B
D
HVPWMDEV
1-7E
HVPWMCHG
1-7E
HVPWMTRCC
1-7E
HVPWMTRCV
1-7E
C3 C2
SGND
REG_F_SEN
TP444
1-1E
REG_R_SEN
TP445
1-1E
PEDG_SEN
1-1E TP442
T1_PE_SEN
TP372
1-1E
MP_PE_SEN
1-1E TP443
C212 C218
C211 C219 C213
SGND
C102
Q15
C +24V_2
R275
E
TNRLED
B TP339
1-6B +3.3V
10k
E
47k
DTC114YUA SGND
SGND
R280
1k
FAN_MAIN_24V
5
1-4B
TP368 TP395
R72
1k
FAN_MAIN_12V
2
1-4B
TP370 TP369
+24V_2
C101
+3.3V
SGND
R278
1k
F
FAN_PS_24V
5
1-6B
TP364 TP394
IMX17
R69
1k
FAN_PS_12V
2
1-6B
TP366 TP365
C101
SGND
1 2
3 4
LVPS
+3.3V
R140 10k L8 CN8
1
RELAYOFFN
C105
SGND
C102
R139 10k
SGND CN8
9
HEATERONN1
C205
C102
Q13
4.7k C SGND
R607
B
10k
E
47k
DTC143ZUA
SGND SGND CN8
TP157 10
HEATERONN2
1 C204
Q12
4.7k C C102
B
SGND
E
47k
DTC143ZUA TP701
+24V_2
TP700 TP702
CN8
4
SGND TP260 +24V
TP1 TP450
CN8
5
+24V +24V
C235
C724
TP11 TP451
TP229 TP295 TP396
CN8
+3.3V
2
PGND 24VRET
C104 CN8
(1608) 3
C210 24VRET
R606 TP4
TP373
C103
TP347
10k TP227 TP153
CN8
8
SGND S0V
HTLIMITN
7
1-4E
C100
EEE1AA101SP
CN8
C501 10V 7
+3.3V +3.3V
( 6.3)
TP228 TP453
TP15
C89
C103
CN8
6
+8.0V +8V
B10B-EH
HVPS
CN1
22
VCC24
+24V_2
C9
PNLSW0
C104
11
PGND 24RET
PNLSW1
100
21
FB_VCLN
C7
C102
SGND
100
18 PNLLED5
FB_DEV
1-5E
C6
PNLLED4
C102
1-6C
PNLLED3
1-6B
SGND
PNLLED2
1k
1-6C
+3.3V
PNLLED1
R14 100
19 1-6C
GRIDC
PNLLED0
R16 100 ANALOG 1-4C
20
FB_GRID
R11 100 ANALOG
12
FB_TRCCV
R12 100 ANALOG 13
FB_TR
23
PWM_VCLN
16
PWM_DEV
15
PWM_CHG
10
PWM_TRCC
14
/TRCV
+3.3V
C4 C5
C8
C101
R8 100
8
REG_FRONT_SEN
R9 100
9
REG_REAR_SEN
R4
100
6
PEDG_SEN
R1 100
5
T1_PE_SEN
R5 100
7
MP_PE_SEN
C707 C709
C706 C708 C710
+5.0V
SGND
R274
C101
10k
Q14
820
E
A1577
B
TP338 1/2W
C
4
TNRLED
LT1_PE_SEN
R67 33
(10mm pitch) LT1_PEDG_SEN
LT2_PE_SEN
0.4
17
SGND S0V
QA1
C1 LT2_PEDG_SEN
1
C103
1
VCC3.3V
+3.3V
6
IMX17
ZD2
110mA
QA1
3
FAN_MAIN
4
(PITCH=15)
C19
BZX85-C11
3
IMX17
+24V_2 C102
(1608)
PGND
DA5
PGND
A1 A2
C
SDS2838
0.4 110mA
2
FAN_PS
QA2
1
C18
IMSA-9615S-23A-PP
6
C102
(1608)
ZD1
QA2
4 PGND
(PITCH=15)
BZX85-C11
3
IMX17
PGND
3 4
5 6
)
LD
CN18
(200mA)
7B
1
5VI
COVER/VDD5I
C175
C103
2
SGND GND
C173
C103
+3.3V 4
+5.0V 5V
+3.3V
R190
1k
TP28
R189
8
BD
VBDN
1-4A 0
R191
3
VDON DATA
1-6A
BLM18RK221SN1D
(1608)
R193
6
VENBN PWMENB
1-6A
0
R192
5
LDHALF LDHALF
1-6A 68k
R196
4.7k
SGND
SGND
TP31
ANALOG R194 100
7
LD_MON LD_MON
1-7A
C185
IMSA-9615S-08A-PP-A
C102
SGND
LED PORT
L (RESET)
H PANEL
CN17
R178 4.7k
+5.0V
TP26
R179 1k
7
SW0 /PNLDI
R180 1k
1-4C
+3.3V
TP27 R181 1k
8
SW1
1-4C
C115
C252
C102 C102
SGND
C101
L11
0
1
LED5
L12
PWM PWM
0 2
LED4
L13
PWM 0 3
LED3
L14
0
4
LED2/PNLDO
L15
0 5
LED1/PNLCLK
L16
PWM 0
6
LED0/PNLRST
9
SGND GND
C165
SGND C103
10
C101 +5.0V +5V
SGND
S10B-PH-K-S(LF)
LT(opt)
CN2
2
+24V_2 24V
C10
C104
1
PGND 24RET
C617
C103
SGND
R47
3
LT1_SOL
LT1_SOL
1-4B BLM15AG601SN1D
R55
10
LT2_SOL LT2_SOL
BLM15AG601SN1D
1-4B
SGND
RA42 68k
+3.3V
(1608) L600
4
+3.3V 3V
0
100
TP409 RA41
1 8 5
LT1_PE
TP410
1-1E
2 7 6
LT1_PEDG
TP454
1-1E
4 5 11
LT2_PE
TP456
1-1E
3 12
6
LT2_PEDG
1-1E
RA43
68k
+3.3V C101
C102
SGND
SGND
TP452 RA40 100
1 8 7
LT_DET1
LT_DET1
TP411
1-1E
2 7 8
LT_DET2 LT_DET2
TP412
1-1F
3 6 9
LT_DET3 LT_DET3
1-1F
RA40 100 RA43 68k
B12B-PH-K-S(LF)
4 5 4 5
C102
C101
SGND
SGND SGND
5 6
A-5
HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
7 8
RELAY_FRONT
CN16
+24V
9
+24V
DA6
D7
1SS355
A1 A2
C
SDS2838 0.5
450mA
8
T1_SOL
Q9
TP37 TP10
R200 470 C
T1_SOL
B 2SC5865
1-4B
E
625mA 7
REG_SOL
Q10
TP38
TP12
R202 390 C
REG_SOL 2SC5865
B
1-4B
E
450mA
6
MP_SOL
Q11
TP39 TP13
R204 470 C
MP_SOL
B 2SC5865
1-4B
C157 C158 C159
E
C102
PGND
PGND
C101
+3.3V
SGND
SGND
R167
68k
TP14
R166 100
4
PNEW_SEN PNEW_SEN
1-1E
TP3 L10
(200mA)
0 1
COVER/VDD5I F_COV_SEN
5A (1608)
(to LD POWER)
+3.3V C160 C163 C168
C102 C103
C101
R169
SGND SGND SGND
68k
TP123
5
FRONT_COVER_SEN +5.0V +5V
Q8
1-1E
C C169
C103
B 2
SGND S0V
10k
E
47k
+3.3V
DTC114YUA
+3.3V SGND
R168
470k
R195
U10
TP16
68k R170
10k 3
TNR_SEN
+
3
TNR_SEN TP17
1
1-4B -
LM393PT 2
IMSA-9615S-09A-PP-A
C161
C102
+5.0V
TP19 SGND
R205 10k R171 10k
U10
PWM_TNRSEN
U10 8
1-4B
+ V+
5
C162 C164 7 C186
R206
SGND
C103 C103 6 - C103
LM393PT V-
68k
10% 10%
LM393PT 4
TP40
SGND SGND
SGND
SGND
TP441 RELAY_REAR
R63
CN3
THM_CENTER
(1608)
1-7A/2B 10k L1
4
C69 A3.3V VDD3
0
R29
C103
C12
18k
C103
1
1%(F) S0V
SGND
SGND
ANALOG
TP440 5
THM_CENTER
SGND
R64 ANALOG
6
THM_EDGE THM_EDGE
1-7B/2B 10k
R30
C15 C16
C71
18k C101
C103 C101
1%(F)
SGND SGND
SGND
+3.3V
R28 R27
68k 68k
TP439
R61
100 3
PO_SEN
PO_SEN
TP437
1-1E
R59 100
2
DX_UNIT_SEN DX_UNIT_SEN
1-1E
C224 C216 C14
C13
C102 IMSA-9615S-06A-PP-A
C102 C101 C101
SGND SGND
DX_SOL
+24V
@CN14
1
+24V
@D6
1SS355
0.5 2
180mA
DX_SOL
@Q7
TP36
TP35
R163 820 C
C144 S2B-PH-K-S(LF)
DX_SOL
B 2SD1484K
1-4B C102
E
R162
10k
PGND
PGND
SGND SGND
CODE
NAME B512210CIR (5/7)
7 8
A
B
C
D
E
F
Confidential