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AL-1000, AL-1010 (serv.man11). AL1000 Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 14

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3. High voltage adjustment
(1) Main charger (Grid bias)
Note:
●
Use a digital multi meter with internal resistance of
10M
Ω
 or more measurement.
●
After adjusting the grid LOW output, adjust the HIGH
output. Do not reverse the sequence.
Procedures
1. Set the digital multi meter range to DC700V.
2. Set the positive side of the test rod to the connector CN11-3
(GRID) of high voltage section of the power PWB and set
the negative side to the frame ground (radiating plate).
3. Execute SIM 8-3. (The main charger output is supplied for
30 sec in the grid voltage LOW output mode.)
4. Adjust the control volume (VR-141) so that the output volt-
age is –400 
±
20V.
5. Execute SIM 8-2. (The main charger output is supplied for
30 sec in the grid voltage HIGH output mode.)
6. Adjust the control volume (VR-142) so that the output volt-
age is 580 
±
10V.
(2) DV bias adjustment
Note:
●
A digital multi meter with internal resistance of 1G
Ω
must be use for correct adjustment.
Procedures
1. Set the digital multi meter range to DC500V. 
2. Set the positive side of the test rod to the connector CN-10-
1 (DV BIAS) and set the negative side to the connector
CN10-2 (FG).
3. Execute SIM 8-1. (The developing bias is outputted for 30
sec.)
4. Adjust the control volume (VR-121) so that the output volt-
age is –400 
±
5V.
AL-1000/1010
9-10
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AL-1000 AL-1010 (serv.man17) Information of parts change. Parts Guide 4 30.17 KB
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AL-1000 AL-1010 (serv.man19) Information of parts change To improve productivity, the L pulley has been changed Parts Guide 2 20.3 KB
AL-1000 AL-1010 (serv.man20) Parts Guide-Sections 1 to 4 Exteriors Original Cover Unit Operation Panel Side Door Unit Parts Guide 7 686.32 KB
AL-1000 AL-1010 (serv.man21) Parts Guide-Sections 5 to 9 Optical Frame 1 Optical Frame Unit 2 LSU Unit Delivery Paper Guide Unit Parts Guide 7 745.04 KB
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AL-1000 AL-1010 (serv.man24) Parts Guide-Sections 21 to 23 250 Sheet Tray Harness Packing Materials Accessories Parts Guide 5 544.44 KB
AL-1000 AL-1010 (serv.man25) Parts Guide-Sections 24 to Index MCU PWB Operation PWB MFD Sensor PWB POD Sensor PWB PPD1 Sensor PWB PPD2 Sensor PWB DC Power Supply PWB Index Parts Guide 13 2.19 MB
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AL-1000 AL-1010 (serv.man48) Change of the harness between ICU and CCD and disuse of the CCD harness cover sheet. Technical Bulletin 1 63.92 KB
AL-1000 AL-1010 (serv.man60) 1.Change of the copy lamp unit. 2.Change of the ROM version. 3.Change of the parts for the fax panel PWB. 4.Change of the software switches for fax. 5.Disuse of the service label. (WHITE) Technical Bulletin 3 152.33 KB
AL-1000 AL-1010 (serv.man61) Change of the parts manufacturing place. (WHITE) Technical Bulletin 3 149.32 KB
AL-1000 AL-1010 (serv.man62) 1.Change of the MCU PWB memory connector. 2.Shape change of the transport paper guide. 3.Change of the shaft. 4.Change of the copy lamp unit. (WHITE) Technical Bulletin 3 159.28 KB
AL-1000 AL-1010 (serv.man63) 1.Disuse Of Parts Due To Change Of The Optical Base Plate. 2.Change Of The USB PWB. 3.Change Of The LSU Unit. (WHITE) Technical Bulletin 4 194.19 KB
AL-1000 AL-1010 (serv.man64) Change Of The Photoconductor. (WHITE) Technical Bulletin 1 61.61 KB
AL-1000 AL-1010 (serv.man65) Correspondance To CE. (WHITE) Technical Bulletin 2 81.83 KB
AL-1000 AL-1010 (serv.man66) Information About The Parts Change. (WHITE) Technical Bulletin 3 113.19 KB
AL-1000 AL-1010 (serv.man67) 1.Material Change For Environmental Protection. 2.Change Of The SPF Interface Harness. 3.Change Of The MCU PWB Memory Connector. 4.Countermeasure Against Breakage Of The 2nd Connecting Gear Tooth. (WHITE) Technical Bulletin 3 72.15 KB
AL-1000 AL-1010 (serv.man68) 1.Change Of MCU PWB Connector. 2.Shape Change Of Scraper. (WHITE) Technical Bulletin 2 73.3 KB
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AL-1000 AL-1010 (serv.man70) Increase Of Strength Of The Fusing Gear. (WHITE) Technical Bulletin 1 62.33 KB
AL-1000 AL-1010 (serv.man71) Shape Change Of Delivery Paper Guide. (WHITE) Technical Bulletin 2 93.63 KB
AL-1000 AL-1010 (serv.man72) Change Of Molding Material. (WHITE) Technical Bulletin 1 66.93 KB
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AL-1000 AL-1010 (serv.man35) 1 Changing the 250 sheet cassette pawls F and R to comply with RoHS. 2 Changing the SPF hinges to comply with RoHS. Technical Bulletin 3 76.67 KB
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AL-1000 AL-1010 (serv.man58) Material change of the fusing fear (45T). (WHITE) Technical Bulletin 1 127.82 KB
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AL-1000 AL-1010 (serv.man55) Change of the control ROM. (WHITE) Technical Bulletin 1 36.13 KB
AL-1000 AL-1010 (serv.man54) Correction of numerical values in the Caution On Laser section. (WHITE) Technical Bulletin 1 71 KB
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