Service manual

FO-IS125N
6 – 5
5. Printer Control (Fuser & High Voltage) Block (4/12)
(1-1E)
(1-1D)
(1-1D)
(1-1D)
(1-1D)
(1-1D)
(1-2B,2-2G)
(9-5D)
A A
B B
C C
D D
E E
F F
G G
H H
I I
6 6 5 5 4 4 3 3 2 2 1 1
DG
DG
+24VH
DG
DG
DG
+24V
MG
+3.3V
DG
+3.3V
+24V
DG
DG
+24VH
+3.3V
DG
DG DG
+3.3V+3.3V
+24VH
RTH
HVPWM
TC/BSON
MCON
nDOP
nRESET
nHLON HLON
C406
1000p
R412 1M
R413
N.M.
C402 0.1u
TP408
TP407
C405
0.1u
R410 5.6K
C400
0.1u
TP409
R402 2.2K
TP404
C408 1000p
PGND
1
PWMSIN
2
MCON
3
TCON
4
+24V
5
1 2 3 4 5
CNHV
A2001WV2-5P
R408 20K
TP403
R403
150K
TP401
R405 1M
C403
1000p
R411 4.7K
R401 2.2K
R409
100K
TP400
D
2
CLK
1
Q
5
Q
3
PR
7
CLR
6
VCC
8
GND
4
IC401
TC7WH74FK
C401
0.1u/50V (1608)
C407
1000p
1
2 3
84
+ -
IC400A
LM393L-S08
RTH2
2
RTH1
1
1 2
CNRTH
B2B-PH-K-M
B
E
C
Q400
RN2406
R404 4.7K
R407 30K
TP402
7
6 5
84
+ -
IC400B
LM393L-S08
TP406
C404
1000p
R406 2.2K
R400 7.50K-F
TP405
Printer Control (Fuser & High Voltage) Block
4/12