Sharp SF-2414 Service Manual Page 98
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Contents
Purpose/kind Section Main
code
Sub
code
Description
Ref. page
Operation
check
Optical unit 1 4 Used to check the operation of the optical unit and its control circuit.
(Operation/procedure)
The operation of simulation 1-3 is repeatedly performed.
5 3 Used to check the operation of the copy lamp and its control circuit.
(Operation/procedure)
The copy lamp lights up for first one sec at full power, and lights for 4 sec at
the currently set exposer level (copy density).
SPF unit 2 2 Used to check the operation of the sensors and detectors in the SPF unit. 3-4
(Operation/procedure)
ON/OFF of the sensors and detectors in the SPF unit can be monitored with
the lamps on the operation panel.
Sensor name Display lamp
Document detector (SPFD) Toner empty lamp
SPF resist sensor (SPPD) Jam lamp
Document exit sensor (SPOD) OPC drum lamp
SPF open/close detector (SDSW) SPF jam lamp
3 Used to check the operation of the SPF drive motor and its control circuit.
(Operation/procedure)
The SPF drive motor rotates for 10 sec at the speed corresponding to the
currently set copy magnification ratio.
4 Used to check the operation of the SPF paper feed clutch and its control
circuit.
(Operation/procedure)
The SPF paper feed clutch turns on for 10 sec.
5 Used to check the operation of the SPF resist clutch and its control circuit.
(Operation/procedure)
The SPF resist clutch turns on for 10 sec.
Operation unit 5 1 Used to check the operations of the lamps on the operations panel and their
control circuits.
(Operation/procedure)
All display lamps on the operation panel turns on for 5 sec.
Fuser unit 5 2 Used to check the operation of the heater lamp and its control circuit.
(Operation/procedure)
The heater lamp turns on for 500ms, and off for 500ms five times repeatedly.
Process 5 4 Used to check the operation of the discharge lamp and its control circuit.
(Operation/procedure)
The discharge lamp lights up for 30 sec.
5 Used to check the operation of the blank lamp and its control circuit.
(Operation/procedure)
The blank lamps lights up sequentially from the rear frame side to the front
frame side, and all the lamps light up for 10 sec.
Operation
check
6 2 Used to check the operation of the OPC separation pawl solenoid and its
control circuit.
(Operation/procedure)
The OPC separation pawl solenoid repeats 0.5 sec ON and 0.5 sec OFF
twenty times.
1sec
4sec
EXP1~5 voltage
CLV
Full power
8 – 11
- 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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