MX-2640N, MX-2640NR, MX-2640FN, MX-3140N, MX-3140NR, MX-3140FN, MX-3640N, MX-3640NR, MX-3640FN (serv.man9). Service Manual Revised June 2014. - Sharp Copying Equipment Service Manual (repair manual). Page 3

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Symbols in this manual
The lists of symbols used in this manual are shown below.
The meaning of each symbol described in the table must be understood for proper servicing.
1. Symbols used for notes and 
cautions
2. Symbols used in the work 
contents
Symbol
Meaning
CAUTION
Indicates a general 
caution item.
HIGH TEMP
Be careful of a high 
temperature in the 
fusing section.
HIGH VOLTAGE
Be careful of an electric 
shock where a high 
voltage is applied such 
as the high voltage 
PWB, the main charger, 
and the process section.
DANGER
Indicates danger.
HANDLE WITH 
CARE
Indicates a part which 
requires special care for 
handling such as the 
HDD, and the LSU.
INHIBIT
Indicates inhibit.
NO 
ELECTROSTATIC 
CHARGE
Be careful to keep away 
from static electricity.  
(PWB's and electric 
parts)
NO DUST, 
FINGER PRINT, 
DIRT, SCRATCH
Be careful not to touch 
directly, such as the 
optical section, the 
photoconductor, and the 
DV roller. 
Also be careful not to 
scratch. 
NO SCRATCH
NO LIGHT
Be careful not to expose 
to light, such as the 
photoconductor, and the 
test chart.
NO SOLVENT
Be careful not to use a 
solvent in cleaning, etc.
NO DISASSEMLE Do not disassemble. 
Not serviceable. 
Example CCD unit.
OK/GOOD
Indicates a correct 
procedure or result in an 
adjustment, etc.
NO GOOD
Indicates a wrong 
procedure or result in an 
adjustment, etc.
NOTE
Indicates a note.
IMPORTANT
Indicates an important 
item. 
REFER
Indicates a reference 
page, etc. 
NEW
Indicates a new 
technology, a new 
method, or a new item.
EXAMPLE
Indicates a description 
using an example.
Symbol
Meaning (Work content)
Adhesion
Indicates that a seal, etc. 
is attached.
Adjustment
Indicates an adjustment.
Measure a 
dimension or a 
size.
Indicates that a 
dimension or a length is 
measured.
Apply grease
Indicates that grease is 
to be applied.
Apply conductive 
grease
Indicates conductive 
grease is applied
Cleaning 
(Dry)
Indicates clean with a 
dry cloth.
Cleaning 
(Wet)
Indicates clean with a  
cloth dampened with 
water.
Cleaning 
(Alcohol)
Indicates clean with 
alcohol.
Cleaning 
(Blower)
Indicates cleaning is 
done with a blower/
brush.
Symbol
Meaning
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