Fdu; Printer Head Drive Circuit; Drivers; Sensors - Ricoh Fx880 Service Manual

DETAILED SECTION DESCRIPTIONS
PCBs

2.3.2. FDU

IJC
CPU
Printer Controller
FCE
FCIP
DRAM

1. Printer Head Drive Circuit

Heater driver
Head rank detection
Head temperature detection
Home position detection
Cartridge type detection

2. Drivers

Carriage motor driver
Paper feed motor driver
Tx motor driver

3. Sensors

Paper end sensor
Paper feed roller sensor
FDU
Driver
Drivers
Paper Feed Roller
Sensor
Paper End Sensor
Carriage Drive
Circuit
Heater Driver
+5V
DC/DC Converter
-5V
DRAM Back-up
Circuit
+5V
2-18
November 28th, 1995
Paper Feed Motor
+24V
Tx Motor
TIJ
Carriage Motor
Carriage
Paper Head
PSU
H505D516.wmf