Read Sharp MX-DE22 / MX-DE23 Service Manual online
MX-DE22 ELECTRICAL SECTION 5 – 1
MX-DE22
Service Manual
[5] ELECTRICAL SECTION
1. Block diagram
MX-DE22/DE23
Main unit
DPFM
DTRC
DESK CONTROL
PWB
CPU
(H8/3684HV)
DCSI2
DPUC2
DCSS13
DCSS14
DCSS12
DCSI1
DCSS1
1
DPUC1
DLUM2
DLUM1
DCSS23
DCSS22
DCSS21
DCSS24
DCSPD1
DCSPD2
DSW_DSK
DPFD1
DPED1
DLUD1
DPFD2
DPED2
DLUD2
GND
GND
+24V
+24V
+24V
+24V
+24V
+24V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
Desk 1 paper level sensor
Desk 2 attachment sensor
Desk 1 rear edge switch 4
Desk main motor
Desk transport clutch
Desk 1 paper feed clutch
Desk 2 paper feed clutch
Desk lift-up motor
Desk 1 rear edge switch 1
Desk 1 attachment sensor
Desk 1 rear edge switch 2
Desk 1 rear edge switch 3
Desk 2 rear edge switch 1
Desk 2 rear edge switch 2
Desk 2 rear edge switch 3
Desk 2 rear edge switch 4
Desk 2 paper level sensor
Right door open/close
sensor
Desk 1 transport sensor
Desk 1 paper presence
sensor
Desk 1 upper limit sensor
Desk 2 transport sensor
Desk 2 paper presence
sensor
Desk 2 upper limit sensor
/DPFM-CLK
/DPFM-EN
DPFM-T
Desk 1
Size detection
PWB unit
Output buf
fer
T
ransistor array
(TD62003AP)
Desk 2
Size detection
PWB unit
Lift motor
drive circuit
Lift motor
drive circuit
Sensor input
circuit
Xtal(7.37MHz)
Output buf
fer
Input buf
fer
Output buf
fer
Input buf
fer
Input buf
fer
Input buf
fer
On-board
write circuit
+5V
+24V
3
/RXD-DSK
/TXD-DSK
/DSR-DSK
/DTR-DSK
RES-DSK
/TRC-DSK
Ground
DH1 heater
DH2 heater
AC L
AC L
AC N
AC N
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