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A. NCU PCB: MFC-9420CN
(Europe, Oceania, Asia model)
Confidential
+
+
-
+
+
+
-
@R2
120
2W
@D2
ERA15-04
@C1
C474
250V
@R4
20k 1/4W
PH3
TLP421
A
K
E
C
D3
1SS120
D1
1SS120
@PH2
TLP627
A
K
E
C
@R27
20k
@C4
C2.2
50V
@ZD1
MTZJ12
@ZD2
MTZJ12
@R10
120
2W
@ZNR1
ENC121D-07A
AL2
RA-242M-C6
@DB1
S1ZB60-7101
A1
-
A2
+
@Q3
DTC123EK
C
B
E
@PH5
TLP421
A
K
E
C
@DB2
S1ZB60
A1
-
A2
+
@D5
ERA15-04
@C7
C1
50V
6C
PLS
6C
CI
6C
CML
FG1
GND
GND
GND
FG
GND
GND
+24V
6D
RDPS
@R11
10k
1/4W
@Q1
KTD1411
C
B
E
@CR1
9
1
12
10
8
4
3
5
@D4
1SS120
@CR2
9
1
12
10
8
4
3
5
C10
C102
@C20
C153
@C21
C153
@SW2
1
2
12
11
7
@SW1
1
2
12
11
7
@R1
0
1/16W
J1
MJ-62J-RD315(LF)
3
XX
4
XX
7
FG
8
FG
J2
MJ-66J-RD315(LF)
1
S
2
Ta
3
La
4
Lb
5
Tb
6
E
7
FG
8
FG
NC
NC
NC
NC
NC
NC
GND
@R22
3.9k
@R13
68k
@R14
2k
@R19 1.5k
6C
SL
R12
100k
U1
BA10358
4
2
3
1
8
C13
C561
R17
100k
GND
C16
C104
+5V
C8
C561
@C12
C563
6C
RL1
REF
@C5
C10
16V
@C14
C822
@R15
68k
4C
CI
GND
6B
RL1
3D
TELOFF
+24V
+5V
2A
CML
6B
SL
1B
PLS
4B
CHRG
2C
RDPS
@R24
820
C6
C470
6.3V
GND
@R25
1k
+5V
C9
C101
U1
BA10358
6
5
7
+5V
@R28
470
6D
CHRG
GND
@Q2
DTC123EK
C
B
E
@C3
C2.2
L7
L4
SBT
L3
SBT
L2
SBT
REF
@R18
3.9k
@C11
C103
GND
@ZD4
MTZJ5.1B
@ZD3
MTZJ5.1B
C17
C104
@ZNR2
ERZV07D470
@R5
3.3k
1/4W
TP5
TP7
@R16
0
@C15
0
TP4
@L5
@C22
C332
250V
@R7
20k
1/4W
NC
NC
NC
NC
NC
NC
@R8
100
1/4W
@C2
C474
250V
@R3
20k
1/4W
@R29
3.9k
@PH4
TLP620
AK1
AK2
E
C
GND
@C23
C104
4C
POL
6D
POL
L1
SBT
@C19
C682
@L6
@C18
C473
@R23
0
@R6
20k
1/4W
TP6
L8
@R9
100 2W
@T1
BT-17
@T2
BT-6A
NC
@AL1
RA-311M-V6-Y-2
@R26
1.8k
GND
R21
0
R20
0
REF
@C24
C105
@C25
C100
10V
6C
TELOFF
PH1
TLP320(F)
C
E
AK2
AK1
GND
@AL3
P3100
R31
0
R30
0
P1
B13B-PASK-1(LF)
1 CHRG
2 RDPS
3 POL
4 PLS
5 RL1
6 SL
7 +5V
8 TELOFF
9 GND
10 CI
11 CML
12 +24V
13 MODEL
JW1
JW2
JW3
JW4
JW5
JW6
JW7
JW8
JW9
JW10
JW11
GND
GND
JW12
JW13
B53K812-2
EUR:0.5V
OCE:1.5V
JPN:2.0V
US:0V
ASA:1.0V
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Summary of Contents for MFC-9420CN
Page 1: ...Confidential FACSIMILE EQUIPMENT SERVICE MANUAL MODELS MFC 9420CN ...
Page 16: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Page 22: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 33: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 48: ...Confidential 3 1 4 CBV DBV Fig 3 16 Y M C K Fig 3 17 ...
Page 69: ...Confidential 3 3 5 Fig 3 35 ...
Page 73: ...Confidential 3 3 9 3 Interface Circuit Printer side Fig 3 38 ...
Page 82: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Page 85: ...Confidential 4 2 Cover page sample End page sample Fig 4 1 ...
Page 86: ...Confidential CHAPTER 5 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 94: ...Confidential 5 5 5 1 1 AC Cord 1 Disconnect AC cord from the machine Fig 5 1 AC cord Machine ...
Page 175: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 203: ...Confidential CHAPTER 7 CLEANING ...
Page 205: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Page 213: ...8 6 Confidential Fig 8 2 Scanning Compensation Data List a b c d e f g h i j k l m n q ...
Page 224: ...8 17 Confidential Cover page sample End page sample Fig 8 8 ...
Page 255: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Page 279: ...Confidential 9 23 2 Image failure 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
Page 280: ...Confidential 9 24 15 a 15 b 16 17 18 19 20 21 22 23 24 25 Fig 9 1 ...
Page 325: ...App 1 5 Confidential 6 Transfer Unit X X X X X X 7 1 2 3 Location SERIAL NO YEAR MONTH DATE ...
Page 398: ...B Power Supply PCB 100V 127V Confidential ...