Read Sharp AR-C270 (serv.man11) Service Manual online
Check that the following simulation values are in the specified range. If not, set the values as specified.
SIM No
ITEM
SPEC
Phenomenon
caused when
caused when
the set value
is changed
Phenomenon
caused when the
set value is outside
the specified range
the specified range
NOTE
AR-C100/C150
AR-C250
AR-C160/C270
Default
Standard
value
Default
Standard
value
Default
Standard
value
48-6
RRM
55
±
0
55
±
0
55
±
0
Change in the
resist motor
RPM
resist motor
RPM
Improper image at
the rear end in the
paper transport
direction (color shift,
flow, dirt, deflection)
the rear end in the
paper transport
direction (color shift,
flow, dirt, deflection)
BELTM
51
±
0
51
±
0
51
±
0
Change in the
transfer belt
rotation speed
transfer belt
rotation speed
Greater banding,
improper image
(color shift, flow,
deflection, flow),
toner dispersion
improper image
(color shift, flow,
deflection, flow),
toner dispersion
FSM(L)
45
Default
+ 20
50 (Japan)
40 (Except
40 (Except
Japan)
Default
+ 20
55 (Japan)
50 (Except
50 (Except
Japan)
Default
+ 20
Change in the
fusing roller
rotation speed
fusing roller
rotation speed
Improper image at
the rear end in the
paper transport
direction (color shift,
flow, dirt, deflection)
the rear end in the
paper transport
direction (color shift,
flow, dirt, deflection)
FSM(S)
40
Default
+ 20
45 (Japan)
40 (Except
40 (Except
Japan)
Default
+ 20
60 (Japan)
55 (Except
55 (Except
Japan)
Default
+ 20
DM(BK)
42
±
0
42
±
0
42
±
0
Change in the
black OPC
drum rotation
speed
black OPC
drum rotation
speed
Greater banding,
improper image
(color shift, flow,
deflection, flow),
toner dispersion
improper image
(color shift, flow,
deflection, flow),
toner dispersion
DM(CL)
37
±
0
37
±
0
37
±
0
Change in the
color OPC
drum rotation
speed
color OPC
drum rotation
speed
Greater banding,
improper image
(color shift, flow,
deflection, flow),
toner dispersion
improper image
(color shift, flow,
deflection, flow),
toner dispersion
Check that the following simulation values are in the specified range. If not, set the values as specified.
SIM No
ITEM
SPEC
Phenomenon caused when the value is
not as specified
NOTE
AR-C150
AR-C250/C160/C270
46-6
B
A(OFFSET ODD)
150
150
Improper image
scan level (density,
color balance)
scan level (density,
color balance)
Improper image
density, improper
color balance
density, improper
color balance
Be sure to set as
specified.
specified.
B(OFFSET EVEN)
150
150
C(GAIN ODD)
120
150
D(GAIN EVEN)
120
150
G
A(OFFSET ODD)
150
150
B(OFFSET EVEN)
150
150
C(GAIN ODD)
140
130
D(GAIN EVEN)
140
130
R
A(OFFSET ODD)
150
150
B(OFFSET EVEN)
150
150
C(GAIN ODD)
180
160
D(GAIN EVEN)
180
160
Check that the following items are properly set. If any adjustment is improper, adjust it properly.
JOB No
WORK ITEM
NOTE
ADJ M1 DV Doctor gap adjustment
Improper image density, improper copy, improper color balance, toner dispersion, developer
dispersion
dispersion
ADJ M2 DV roller main pole position adjustment
(Auto color balance adjustment service target gamma setup)
a. Outline
Auto color balance adjustment is performed with a certain color balance (gamma) as a target. There are following two kinds of targets:
Only the service target among them allows optional setup of a color balance (gamma) target.
This setup must be performed in the following cases.
•
When the user requests to customize the color balance.
•
When the service target gamma is found to be incorrect.
•
When the copy color balance and the density adjustment is manually performed. (SIM 46-21)
•
When a U2 trouble occurs.
•
When the ICU main PWB is replaced.
•
When the EEPROM on the ICU main PWB is replaced.
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