Circuit Board; Fusing Belt; Pressure Roller - Ricoh G092 Service Manual

Circuit board

Engine Control Board
IC1
(C )
37
AN0
38
AN1
3.3V
IC20
0
IC14
( S C)
3.3V
182
NFSRJA
3.3V
IC6
181
ROTAT
E
7
180 +
FSRNO
-
N
179
TH1HIG
61
NCSAD
79
NZCROS
S
66
VIN
100V
IC26
12
SET
D
IC25
1 2
11
CLK
CLR
IC20
68 5
6
IHON
167 3 4
IHONGAT
E
!
Paper jam detection sensor
" Rotation sensor
#

Pressure roller

$ Paper
NOTE: Thermistor 1 is located in the middle of the fusing belt; thermistor 2 is
located towards the rear of the fusing belt. Both Thermistors open at
185 °C.
SM
3.3V
2
TH1HIG
H
3.3V
CN15
3
TH2HIG
5 ROTAT
E
1
FSRFUS
E
8
GND
11
6
NFSRJA
5
IC6
Vref
6
2.27V 2
1
+
Vref
-
3
0.60V
CN32
1
NCSAD
6
5
DZCRO
S
8
VIN100
V
+24V
9
Q
Q37
8
Q
GND
13
%
&
'
(
6-29
"
#
!
Fusing Unit
$
IHON
PHOTO –
COUPLE
DAC
IH INVERTER
BLOCK
Fuse

Fusing belt

IH unit
Thermistor 1 and thermistor 2
Encoder
PRINT PROCESS
%
&
'
60
degree
60
Encode
degree
(
RECTIFIE
R
FILTER
G081D915.WMF
G081/G092