SHARP Arlc1n, ARLC1N1E Service Bulletin
AR-LC1N
CODE: 00ZARLC1N/A1E
DIGITAL COPIER OPTION
LARGE-CAPACITY
PAPER FEED TRAY
MODEL AR-LC1N
CONTENTS
[Note]
This Service Manual describes only the differences from 00ZARLC1//A1E.
The items which are not described in this Manual are common with the
00ZARLC1//A1E.
[ 1 ] OUTLINE OF THE PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[ 2 ] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[ 3 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
[ 4 ] EXTERNAL VIEW AND INTERNAL CONSTRUCTION . . . . . . . . . . . . 4-1
[ 5 ] OPERATING PRINCIPLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
[ 6 ] DISASSEMBLY AND REINSTALLATION . . . . . . . . . . . . . . . . . . . . . . 6-1
[ 7 ] ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
[ 8 ] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
[ 9 ] TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
[10] WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
[11] CIRCUIT DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
PARTS GUIDE
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
AR-LC1N
List of different points between the AR-LC1N and the AR-LC1
No.
Page Item Content Change Remark
1 1-1 [2]-9 Max. power consumption
about 17.6 W
2 11-1 [11] CIRCUIT DESCRIPTIONS Entirely changed. Refer to the
AR-LC1 AR-LC1N
Max. power consumption
Changed to about 25 W
attached page.
8/6/1999 – 1 –
[11] CIRCUIT DESCRIPTIONS
1. Operation
(1) Communication buffer circuit
On the communication buffer circuit, signals are input and output by the transistor RT1N141C (Q9 – Q13).
AR-LC1N
Signal name Logic
DSR-LCC
DTR-LCC
TXD-LCC
RXD-LCC
H: Request for communication
L: No request for communication
H: Communication allowed
L: Communication inhibited
H: Normal
L: Start bit
H: Normal
L: Start bit
(2) Sensor input circuit
The sensor signals used by the LCC are connected directly to the input port of the IC6. LPFD and LCD are provided with a static electricity noise
protective diode which protects against static electricity from the paper transport section. The other sensors have the same circuit configuration as the
LPED.
+5V
CPU
(IC6)
P74/AN4
P73/AN3
P76/AN6
18 LPFD
17 LDD
21 LPED
MC2838
10K
10K
10K
MC2836
D9
D10
R16
R15
22K
22K
C12 C11 C10
BR1
4.7K
1000P x 3
LPFD
LDD
LPED
CN-A-17
CN-A-23
CN-A-12
(3) Upper limit switch
A limit switch is provided to protect the LCC If it fails to operate normally. If the tray exceeds the upper limit sensor (LUD) position, the switch is turned
off to shut off the power of the lift motor.
LCC control PWB
Upper limit switch
24V
Lift motor
24V(LLSW)
Lift motor
LLM+
LLM-
drive circuit
11 – 1 8/6/1999
Loading...