Sharp SF-2014 Manual de Serviço descarregar pdf (Página 16)

7. PWBs (The SF-2214 as the typical example)

No. Name Description

AC circuit PWB AC power input

Discharge lamp PWB Discharge lamp drive

Main PWB Main body control

AE PWB Document density auto exposure detection

Blank lamp PWB Blank lamp control

Lower unit PWB Lower unit parts control

High voltage PWB Supply of the process high voltage and the developer bias voltage.

Operation PWB Operation input, display control

SPF control PWB SPF control

RE PWB Speed detection for SPF motor

3 – 7

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 127 128

SERVICE MANUAL 1
MODEL SF-2014 1
MODEL SF-2214  1
CONTENTS 2
[1] GENERAL DESCRIPTION 4
[2] PRODUCT SPECIFICATIONS 6
• Inch series 7
• Single 7
• Developer 7
• Toner 7
3. Supplies 8
Upper unit 10
Lower unit 10
1. Packing drawing 17
2. Installation 17
(2) Space around the machine 18
(3) Installing table 18
Mirror unit fixing screw 19
(3) Developer setting 20
(4) Toner supply 20
(6) Accessory attachment 21
Installation Manual 22
Mounting 23
[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
OPC drum 32
Step 5 (Development) 33
Step 6 (Transfer) 34
Step 7 (Separation) 34
Aluminum layer 35
(5) Process correction system 36
2) Correction operation 36
[Initial setting] 37
[Correction timing] 37
[Correction operation] 37
7. SPF section (SF-2214 only) 38
[6] DISASSEMBLY AND ASSEMBLY 40
1-3. Separation roller 41
One-way clutch side 42
1-6. Transport belt 43
1-7. Socket holder unit 43
1-8. Lower unit PWB 43
1-10. Power unit 43
Arrow mark 44
3. Fuser section 45
Paper exit paper guide 47
4. Optical system 48
<Removal> 49
<Installation> 49
4-6. Optical unit removal 50
5. SPF section 52
1 , 2 ." 53
5-5. Clutch/solenoid removal 54
5-6. Sensor removal 54
6. Drum section 55
7. Developer section 55
7-3. Toner motor removal 56
7-4. Toner density sensor 56
9-1. Ozone filter 57
9-3. Ventilation fan motor 57
9-4. Transport roller clutch 58
9-5. Paper exit sensor 58
[7] ADJUSTMENTS 59
0.6±0.03mm 60
2. Optical section 61
Document Copy 64
Document Copy A Copy B 65
Optical unit cover 66
Scanner unit drive pulley 67
Set screw 67
No.2 scanner unit 68
Positioning plate 68
Do not move 68
Document Copy C Copy D 69
Change the right side 70
Change the left side 70
Copy paper 71
No.4/5 mirror drive lever 72
No.4/5 mirror unit frame 72
Copy image size 74
Original size 74
(7) Uniformity adjustment 76
Paper exit 77
Half-tone copy 77
Less exposure 77
(Dark copy) 77
Scale image lead edge 79
Reduction copy (x 0.64) 79
10 20 30 80
Copy scale image 81
Paper lead edge 81
3. COPY DENSITY ADJUSTMENT 84
Not copied 85
Slightly copied 85
adjustment 86
4. Others 88
Cut the wire at the 88
Wind two turns and 88
[8] SIMULATIONS 89
4. Purpose list 90
5. Details of simulations 91
÷ Document length x 100 [%] 95
EXP1~5 voltage 99
Full power 99
6. User simulation 101
[9] SELF DIAG 102
4. Self diag contents 103
2) Transport section 108
1) Paper feed section 108
[10] SERVICING AT MEMORY 109
TROUBLE AND MAIN 109
CONTROL PWB REPLACEMENT 109
4. Set value recording sheet 112
5. Memory simulation list 113
[11] MAINTENANCE 114
[12] ELECTRICAL SECTION 115
3. Main circuit 116
3 Block diagram 117
IN XIN IN Clock IN 118
OUT XOUT OUT Clock OUT 118
H=+32V, VB=+24V 119
1 General 120
Stepping motor time chart 121
External view 5P5 122
Delay capacity 122
(1) Outline 125
(2) Display circuit 126
1 Block diagram 126
2 Operation 126
(3) LED display 127
• AC PWB unit 127
• In the main PWB unit 128

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