Sharp SF-2414 Service Manual download pdf (Page 9)

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[3] EXTERNAL VIEW AND INTERNAL STRUCTURE

1. External view and internal structure (SF-2514 as the example model)

No. Name No. Name No. Name

Exit tray

SPF exit tray

SPF tray

Document cover

Original guide

Document table

Manual bypass guide

Manual bypass

Operation panel

Paper tray

Front cover

Release button

Power switch

Toner cartridge release lever

Handel

Toner cartridge

Open/close lever

Photoconductive drum

Fusing unit (High temperature)

Fusing unit lever

1 2 3 4 5 6

20 19

Upper unit

Lower unit

3 – 1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 130 131

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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Sharp SF-2414 Service Manual Page 9

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