2A3/4
2-3-3
long paper.
11. Upper lift limit switch (LICSW-U) ................. Detects the upper drawer lift reaching
the upper limit.
12. Lower lift limit switch (LICSW-L) .................. Detects the lower drawer lift reaching
the upper limit.
13. Paper feed switch 1 (PFSW1) ..................... Controls feed clutch 4.
14. Paper feed switch 2 (PFSW2) ..................... Controls feed clutch 1, 2 and 3, and the
upper paper feed clutch.
15. Paper feed switch 3 (PFSW3) ..................... Controls the lower paper feed clutch.
16. Paper feed switch 4 (PFSW4) ..................... Controls feed clutch 3.
17. Feed switch (FSW) ...................................... Controls the secondary paper feed start
timing.
18. Registration switch (RSW) ........................... Controls the secondary paper feed end
timing.
19. Eject switch (ESW) ...................................... Detects paper jam in the fixing section.
* For inch specifications only.
2-3-2 Engine PCB
Figure 2-3-2 Engine PCB block diagram
The engine PCB (EPCB) transmits the status of each switch to the main PCB (MPCB)
and transmits the control signals output from the main PCB (MPCB) through driver ICs
to motors, clutches and solenoids. It also receives and transmits input and output
signals to and from optional devices via a communication interface.
EPCB
Communication
interface
Driver
IC
Main PCB
Finisher*
3
Motors
High-voltage
transformer PCB
Switches,
sensors
Clutches,
solenoids
Large paper
deck*
2
MMD*
4
*3: Optional.
*4: Optional for 120 V specifications only.
*1: Optional for 42 ppm only.
*2: 42 ppm: Optional/52 ppm: standard
Paper feed
desk*
1
Summary of Contents for Ri 4230
Page 3: ...SERVICE MANUAL Ri 4230 5230 ...
Page 13: ...4230 5230 S M MCA THEORY AND CONSTRUCTION SECTION I I Theory and Construction Section ...
Page 14: ...1 1 5 2A3 4 CONTENTS 1 1 Specifications 1 1 1 Specifications 1 1 1 ...
Page 100: ...4230 5230 S M MCA ELECTRICAL SECTION II II Electrical Section ...
Page 119: ......
Page 138: ......
Page 159: ...4230 5230 S M MCA III Set Up and Adjustment Section III SET UP AND ADJUSTMENT SECTION ...
Page 448: ...2A3 4 3 6 3 25 Toner scatters at the leading edge of the image See page 3 6 17 ...