Sharp FO IS125N - B/W Laser - All-in-One Service Manual page 102

FO-IS125N
2.2. Printer control block
Fax Engine (IC100) controls each component of Laser Beam Printer
(LBP) as follows.
1) Main Motor control
2) Pickup Motor control
3) Fuser control
4) High Voltage Generator control
5) Laser Scanning control
6) Sensor monitor
2.2.1 Signal connection
24MHz
3.3 V Control
Flex-0
Flex-0 HLON
Limit Temp.
MADC_IN
FAN
GPO
FAX ENGINE
nMEN
(IC100)
GPO
OSC1
Flex-0 STEP
OSC2
nDOP
MADC_IN
GPO PUS
GPI
GPI
GPI
MADC_IN
MADC_IN
GPO TC/BIASON
GPO MCON
PWM
Flex-0
LDEN
Flex-2
PMCLK
Flex-0
HSYNC
Flex-2
PMRDY
GPI
PMD
GPO
PDATA
Flex-2
S_nH
Flex-2
DRV
LATCH
COMP
F.F.
DRV
MA+
Motor MA-
Driver MB+
MB-
COMP
DRV
nPOUT
nLDEN
OPEN nPMCLK
COLLECTOR
nHSYNC
nPMRDY
OPEN nPMD
COLLECTOR
nPDATA
nS_H
Fig. 4
5 – 11
3.3 V/5 V/ 24 V Control
nZC
AC Power
Heater
Lamp
RTH
FUSER
Thermister
FAN
STEPPER
MOTOR
+24V
Door SW
(Interlock)
Solenoid
P_OUT
from FUSER
nPIN
P_IN
TCT0
Toner C/T
TCT1
DETECT SW
TCT2
H/V-U
LSU