Sharp MX-5500N / MX-6200N / MX-7000N (serv.man24) Peripheral ▷ View online
MX-CFX1 ELECTRICAL SECTION 11 – 9
9) Operator Panel Circuit
This is the circuit of the operator panel board.
The operator panel drive board turns each of the LED1-6 on or off,
and detects weather each of the PSW1-3 is on or off.
The operator panel drive board turns each of the LED1-6 on or off,
and detects weather each of the PSW1-3 is on or off.
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stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
COPYRIGHT
©
XXXX BYSHARP CORPORATION
ALL RIGHTS RESERVED.
The PWB’s of this model employs lead-free solder. The “LF” marks indicated on the PWB’s and the Service Manual mean “Lead-Free” solder.
The alphabet following the LF mark shows the kind of lead-free solder.
The alphabet following the LF mark shows the kind of lead-free solder.
(1) NOTE FOR THE USE OF LEAD-FREE SOLDER THREAD
When repairing a lead-free solder PWB, use lead-free solder thread.
Never use conventional lead solder thread, which may cause a breakdown or an accident.
Since the melting point of lead-free solder thread is about 40°C higher than that of conventional lead solder thread, the use of the
Never use conventional lead solder thread, which may cause a breakdown or an accident.
Since the melting point of lead-free solder thread is about 40°C higher than that of conventional lead solder thread, the use of the
exclusive-use soldering iron is recommendable.
(2) NOTE FOR SOLDERING WORK
Since the melting point of lead-free solder is about 220°C, which is about 40°C higher than that of conventional lead solder, and its soldering
capacity is inferior to conventional one, it is apt to keep the soldering iron in contact with the PWB for longer time. This may cause land
separation or may exceed the heat-resistive temperature of components. Use enough care to separate the soldering iron from the PWB when
completion of soldering is confirmed.
Since lead-free solder includes a greater quantity of tin, the iron tip may corrode easily. Turn ON/OFF the soldering iron power frequently.
If different-kind solder remains on the soldering iron tip, it is melted together with lead-free solder. To avoid this, clean the soldering iron
Since lead-free solder includes a greater quantity of tin, the iron tip may corrode easily. Turn ON/OFF the soldering iron power frequently.
If different-kind solder remains on the soldering iron tip, it is melted together with lead-free solder. To avoid this, clean the soldering iron
tip after completion of soldering work.
If the soldering iron tip is discolored black during soldering work, clean and file the tip with steel wool or a fine filer.
If the soldering iron tip is discolored black during soldering work, clean and file the tip with steel wool or a fine filer.
Example:
5mm
Lead-Free
Solder composition
code (Refer to the
table at the right.)
<Solder composition code of lead-free solder>
Solder composition
Sn-Ag-Cu
Sn-Ag-Bi
Sn-Ag-Bi-Cu
Sn-Zn-Bi
Sn-In-Ag-Bi
Sn-Cu-Ni
Sn-Ag-Sb
Bi-Sn-Ag-P
Bi-Sn-Ag
Sn-Ag-Bi
Sn-Ag-Bi-Cu
Sn-Zn-Bi
Sn-In-Ag-Bi
Sn-Cu-Ni
Sn-Ag-Sb
Bi-Sn-Ag-P
Bi-Sn-Ag
a
b
z
i
n
s
s
p
Solder composition code
a
LEAD-FREE SOLDER
* Applicable to battery-operated equipment
* Applicable to battery-operated equipment
SHARP CORPORATION
Digital Document System Group
CS Promotion Center
Yamatokoriyama, Nara 639-1186, Japan
Digital Document System Group
CS Promotion Center
Yamatokoriyama, Nara 639-1186, Japan
2006 June Printed in Japan
Click on the first or last page to see other MX-5500N / MX-6200N / MX-7000N (serv.man24) service manuals if exist.