Sharp SF-1020 Manual de servicio Pagina 103
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Main code Sub code Content
42 (Note) Developer counter clear
Used to clear the currently installed developing unit counter and to display the developer counter value on the
copy quantity display.
(“000” is displayed because the counter is cleared.)
(Note) The counter is cleared by entering the sub code “01.”
43 01 Fusing temperature setting
Used to set the fusing control temperature.
When this simulation is executed, the currently set fusing temperature is displayed on the copy quantity display.
The set value is changed by pressing the magnification ratio display key.
Select the fusing temperature and press the PRINT button to store it.
The setting range is 160 ∼ 205°C (in the increment of 5°C).
Only in the SF-2120, pressing the duplex key lights up the single → duplex (even number of originals) lamp and
the fusing temperature for duplex copy can be set. The setting procedure is the same as the normal one.
44 01 Process control operation setting
Used to set valid/invalid of the grid voltage correction, optical dirt correction, and drum membrane decrease
correction.
When this simulation is executed, the currently set value is displayed on the copy quantity display.
To make each correction mode valid, enter the sum of the codes of the correction modes, and press the PRINT
button to store it.
Code Correction mode
+1 Grid voltage correction
+2 Optical dirt correction
+4 Drum membrane decrease correction
The initial value is “7.” (All corrections are valid.)
The grid voltage correction is always valid regardless of set value. (Even if it is set to “0,” the grid voltage
correction is not canceled.)
05 Grid voltage correction operation test
Used to perform the grid voltage correction and to display the measure data on the copy quantity display.
When this simulation is executed, the grid voltage correction is automatically performed. The image density
sensor is read when -30V, 0V, and +30V are applied to the latest patch forming grid voltage.
After completion of the operation, the measure data are displayed on the copy quantity display.
Since there are two or more display items, the third digit is used to make distinction between the light reception
level and the original judgment level, and the lower two digits are used to display the data.
The display is selected by the magnification ratio key.
Copy quantity display
Display data (Image density sensor A/D input value)
3rd digit 2nd, 1st digits
A Measured
data
Drum surface data (patch forming grid voltage) –30V is applied.
b Drum surface data (patch forming grid voltage) is applied.
C Drum surface data (patch forming grid voltage) is applied.
d Patch data (patch forming grid voltage) -30V is applied.
E Patch data (patch forming grid voltage) is applied.
F Patch data (patch forming grid voltage) +30V is applied.
The data displayed by the lower two digits are A/D input values of the original sensor, and is expressed in
decimal. (Display range: 0 ∼ 99)
The patch forming grid voltage after execution of this simulation can be checked with SIM 44-9.
8 – 13
- SERVICE MANUAL 1
- Contents 2
- [1] PRODUCT OUTLINE 5
- [2] PRODUCT SPECIFICATIONS 6
- 3. Supply parts 8
- 4. Optional specifications 9
- [3] PRODUCT VIEWS 11
- 11 12 13 12
- Clutches and solenoids 14
- 6. Rollers, mirrors, etc 17
- 1. Unpacking 18
- 2. Installation 18
- Grounding 19
- 4. Charger cleaning 20
- 5. Developing unit setting 21
- Hand carry strap 22
- Developing unit lever 22
- Front cabinet 22
- Copy tray 22
- 9. Center shift adjustment 24
- 10. Label attachment 24
- (SF-CM15) installation 25
- (SF-CM16) 26
- 16P connector 27
- 13. Tray paper size selection 28
- (Described with the SF-1020) 28
- 4. Attach the tray 29
- Roller release arm 30
- Paper feed roller shaft 30
- Paper feed roller 30
- 2. Developing section 31
- (3) Optical section 32
- • Brightness (F8.5) 33
- • Focus: (195mm ±1%) 33
- 2. Basic operations 35
- • Photo density copy mode 35
- (2) Dirt correction 36
- (4) Copy process 37
- (2) Process diagram 38
- Step 1 (Main Charging) 39
- Step 2 (Exposure) 39
- Step 3 (Development) 40
- Step 4 (Transfer) 41
- Step 5 (Separation) 41
- Step 6 (Cleaning) 42
- Step 7 (Discharging) 42
- (6) Process control function 43
- Process control 44
- Process control timing 44
- Drum marking 44
- Basic structure 44
- (5) TRANSPORT/FUSING SECTION 45
- (6) Fusing paper exit section 45
- Thermo control 46
- (DDM rotary encoder sensor) 47
- [6] DISASSEMBLY AND ASSEMBLY 48
- 1-3. PS front roller ass’y 49
- 1-4. Separation roller 49
- 2. Transport unit 50
- PS mylar 51
- 3. Fusing section 52
- Optical adjustment plate 54
- Mirror base B 56
- Mirror base positioning plate 57
- No.2/3 mirror unit 57
- Horizontal scales 58
- Projections 58
- 6) Lens wire replacement 60
- L drive pulley 61
- Lens unit 61
- Notch in the optical 62
- 5. High voltage section 63
- 6. Process section 64
- 7. Developing section 67
- MAG roller 68
- 9. Frame major parts 69
- 9-2. Power unit 70
- 9-3. Tray size detecting PWB 70
- (SF-2020) 71
- 10-1. Separation roller 72
- Clearance gauges 75
- 2. Optical system 76
- 2-2. Note for adjustments 77
- No.4/5 drive holder 78
- • When the lens is replaced 79
- Lens value label 80
- Zooming cam 81
- 10 20 90 100 110 82
- G. Vertical skew adjustment 84
- H. Horizontal skew adjustment 84
- Mirror base rail handle 85
- Loosen Loosen 85
- 1 scale = 1mm 85
- I. Center shift adjustment 86
- K. Copy lead edge adjustment 87
- • RRC-A = 6.151 × (L1 – L2) 88
- 10 20 30 40 89
- [8] SIMULATION 91
- 4. List of simulations 92
- Cassette size switch table 93
- 5. Details of simulations 94
- 0.5s 0.5s 0.5s 95
- 0.5s 0.5s 96
- PD1 PD2 PD3 PD4 PD5 PD6 102
- Document lead eddge 102
- 4 Set the obtained values 108
- 6. User simulation 110
- (2) User simulation 111
- [9] SELF DIAGNOSTICS 112
- PLACEMENT 115
- 4. Set value recording sheet 117
- 5. Memory simulation list 118
- [11] MAINTENANCE 119
- [12] ELECTRICAL SECTION 120
- Power ON 121
- (1) Block diagram 122
- SC3041K12F 123
- 4 Internal block diagram 124
- (3) I/O (IC8) CXD1095Q 127
- 1 General 127
- 2 Features 127
- 3 Pin arrangement 127
- DTA123YS 130
- 2 Operation 132
- M51953 BL 133
- (12) Operation panel 134
- HOUND AC CIRCUIT 135
- (14) ADU circuit description 136
- (2) ADU CPU (IC1) 137
- Phase B Phase B 139
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