Sharp SF-2414 Service Manual Page 85
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2) Set the density level to "1" with the copy density adjustment key.
(The currently set copy lamp voltage level will be displayed on the
COPIES SELECTED display.)
3) Set the copy lamp voltage level set value to "0."
Enter the new set value with the numeric key and press the print
button, then the entered value will be set. (Be sure to set to "0.")
4) Set the copy density level to "5" with the copy density adjustment
key.
(The currently set copy lamp voltage level will be displayed on the
COPIES SELECTED display.)
5) Press the print button to make a copy.
Check the gray scale copy to insure that "3" is slightly copied and
"1" is not copied.
When the copy density is too dark, increase the copy lamp voltage
level.
When the copy density is too light, decrease the copy lamp volt-
age level.
Enter a new set value of the copy lamp voltage level with the
numeric keys and press the print button, then the entered value
will be set and the copy density will be adjusted according to the
set value.
F. Auto copy mode (Toner save mode) copy density
adjustment
1) Set the adjustment mode to the auto copy mode (Toner save
mode).
(Press the copy mode select key to light the auto copy mode lamp
and the photo copy mode lamp.)
Adjust the copy density in the same manner as the Photo copy mode
(Non-toner-save mode) copy density adjustment.
G. Copy density adjustment in the SPF copy mode
In copy density adjustment in the SPF copy mode, the copy density in
each individual copy mode is not adjusted separately. All copy den-
sities in the copy modes adjusted by the original table copy mode
copy density adjustment are shifted together.
When, therefore, the original copy mode copy density is changed, this
adjustment should be also performed.
1) Execute Simulation 51-6.
The SPF copy mode copy density level is displayed on the copy
quantity display.
2) Adjust the set value so that the copy density becomes the same
as the original copy mode copy density level.
(Compare in the photo copy mode for clear distinction.)
The reference set value is "7" and the set value can be changed
in the range of 0 ∼ 99.
51
2
3
4
%
78%
64%
100%
TRAY SELECTEXPOSURE
AUTO
MANUAL
PHOTO
COPY RATIO
ZOOM
129%
117%
5
1
2
x
8
1
2
8
1
2
x
11
8
1
2
x
11 10 14
x
8
1
2
x
14
8
1
2
x
11
8
1
2
x
11
5
1
2
x
8
1
2
Copy mode lamp Copy density display lamp Copy sheet display
Copy mode
select ke
y
Copy density
ad
j
ustment ke
y
Lighting
51
23
4
%
78%
64%
100%
TRAY SELECTEXPOSURE
AUTO
MANUAL
PHOTO
COPY RATIO
ZOOM
129%
117%
5
1
2
x
8
1
2
8
1
2
x
11
8
1
2
x
11 10
14
x
8
1
2
x
14
8
1
2
x
11
8
1
2
x
11
5
1
2
x
8
1
2
Copy mode lamp Copy density display lamp Copy sheet display
Copy mode
select key
Copy density
adjustment key
Lighting
51
23
4
%
78%
64%
100%
TRAY SELECTEXPOSURE
AUTO
MANUAL
PHOTO
COPY RATIO
ZOOM
129%
117%
5
1
2
x
8
1
2
8
1
2
x
11
8
1
2
x
11 10
14
x
8
1
2
x
14
8
1
2
x
11
8
1
2
x
11
5
1
2
x
8
1
2
Copy mode lamp Copy density display lamp Copy sheet display
Copy mode
select key
Copy density
adjustment key
Lighting
Lighting
1 10
W234
5
678
9
Not copied
Slightly copied
120mm
White paper
Test chart
Front side
51
234
%
78%
64%
100%
TRAY SELECTEXPOSURE
AUTO
MANUAL
PHOTO
COPY RATIO
ZOOM
129%
117%
5
1
2
x
8
1
2
8
1
2
x
11
8
1
2
x
11 10
14
x
8
1
2
x
14
8
1
2
x
11
8
1
2
x
11
5
1
2
x
8
1
2
Copy mode lamp Copy density display lamp Copy sheet display
Copy mode
select key
Copy density
adjustment key
Lighting
7 – 28
- SERVICE MANUAL 1
- MODEL SF-2314 1
- MODEL SF-2414 1
- MODEL SF-2514 1
- CONTENTS 2
- [1] GENERAL DESCRIPTION 4
- [2] PRODUCT SPECIFICATIONS 5
- 3. Supplies 7
- Storage period: 8
- Upper unit 9
- Lower unit 9
- 6 7 8 14 15 16 17 18 10
- 11 12 13 14 15 16 17 18 19 20 11
- 1. Packing drawing (SF-2514) 16
- 2. Installation 16
- (2) Space around the machine 17
- (3) Installing table 17
- Mirror unit fixing screw 18
- (3) Developer setting 19
- Developer unit 20
- Fixing screw 20
- (step screw) 20
- Mounting screw A 22
- Mounting screw B 22
- Mounting 23
- Multi bypass feeder unit 24
- [5] GENERAL DESCRIPTIONS OF 25
- EACH SECTION 25
- 3. Fuser, paper exit section 26
- 4. Developer section 26
- 5. Optical system 27
- 5-2. Basic operations 28
- 6. Copy process 30
- (3) Actual process 31
- Step 3 (Main Charging) 32
- Step 4 (Exposure) 32
- Step 5 (Development) 33
- Step 6 (Transfer) 34
- Step 7 (Separation) 34
- Step 8 (Cleaning) 35
- Step 9 (Discharging) 35
- (5) Process correction system 36
- 2) Correction operation 36
- [Initial setting] 37
- [Correction timing] 37
- [Correction operation] 37
- 7. SPF section (SF-2514 only) 38
- (Timing chart) 38
- [6] DISASSEMBLY AND ASSEMBLY 39
- 1-3. Separation roller 40
- One-way clutch side 41
- 1-6. Transport belt 42
- 1-7. Socket holder unit 42
- 1-8. Lower unit PWB 42
- 1-10. Power unit 42
- 2. Manual paper feed section 43
- 3. Fuser section 44
- 3-6. Scraper replacement 46
- 4. Optical system 47
- 4-6. Optical unit removal 49
- 5. SPF section 51
- 1, 2." 52
- 5-5. Clutch/solenoid removal 53
- 5-6. Sensor removal 53
- 6. Drum section 54
- 7. Developer section 54
- 7-3. Toner motor removal 55
- 7-4. Toner density sensor 55
- 9-3. Ventilation fan motor 56
- 9-1. Ozone filter 56
- 9-4. Transport roller clutch 57
- 9-5. Paper exit sensor 57
- [7] ADJUSTMENTS 58
- 0.625±0.03mm 59
- 2. Optical section 60
- Document Copy 63
- Document Copy A Copy B 64
- Cam fixing screw 65
- Do not move 65
- No.2 scanner unit 67
- Positioning plate 67
- Scanner unit drive pulley 67
- Document Copy C Copy D 68
- Change the right side 69
- Change the left side 69
- Copy paper 70
- Optical unit cover 71
- Copy image size 73
- Original size 73
- (7) Uniformity adjustment 75
- Paper exit 76
- Half-tone copy 76
- Less exposure 76
- (Dark copy) 76
- Scale image lead edge 78
- Enlargement copy (x 1.54) 78
- Reduction copy (x 0.64) 79
- Copy scale image 80
- Paper lead edge 80
- current void area (mm) 81
- 3. COPY DENSITY ADJUSTMENT 83
- Not copied 84
- Slightly copied 84
- adjustment 85
- Charger wire 87
- Improper 87
- [8] SIMULATIONS 88
- 4. Purpose list 89
- 5. Details of simulations 90
- ÷ Document length x 100 [%] 94
- EXP1~5 voltage 98
- Full power 98
- 6. User simulation 100
- Auto start function 101
- (2) User simulation prcedure 101
- (3) User program code table 102
- [9] SELF DIAG 103
- 4. Self diag contents 104
- 1) Paper feed section 109
- 2) Transport section 109
- [10] SERVICING AT MEMORY 110
- TROUBLE AND MAIN 110
- CONTROL PWB REPLACEMENT 110
- 4. Set value recording sheet 113
- 5. Memory simulation list 114
- [11] MAINTENANCE 115
- [12] ELECTRICAL SECTION 116
- M37702M2-XXXFP 117
- 3 Block diagram 118
- IN XIN IN Clock IN 119
- OUT XOUT OUT Clock OUT 119
- H=+32V, VB=+24V 120
- 1 General 121
- Stepping motor time chart 122
- External view 5P5 123
- Delay capacity 123
- V3' 124
- (1) Outline 126
- (2) Display circuit 127
- 1 Block diagram 127
- 2 Operation 127
- (3) LED display 128
- • AC PWB unit 128
- • In the main PWB unit 129
- COPYRIGHT 131
- 1997 BY SHARP CORPORATION 131
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