AR-C150 (serv.man42). Troubleshooting Copy Quality — Sharp Copying Equipment Technical Bulletin (repair manual)

Model
AR-C150 (serv.man42)
Pages
12
Size
167.67 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
Copying Equipment / Troubleshooting Copy Quality
File
ar-c150-sm42.pdf
Date

View Sharp AR-C150 (serv.man42) Technical Bulletin online

 
 
 
GMA050702 
Sharp Electronics (UK) Ltd., Technical Services Group
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Model: 
AR-C150/160/250 
 
 
  Description
In order to help technicians troubleshoot copy quality and calibration issues, an 
adjustment procedure has been established.  
 
 Action: 
During preventive maintenance or when experiencing copy quality or colour 
balance problems, please refer to the following guidelines. 
 
 
 
 
 
           
     Firmware: 
It is recommended that all engine firmware should be upgraded to the latest release 
 
 
 
 
(or higher):- 
 
 
 
 
 
 
 
 
 
 
AR-C150 AR-C160  AR-C250 
ICU 
6.01 3.05  4.02 
PCU 
6.02a 3.06  4.03 
PCU-SUB 
5.05 3.01  3.01 
OPE 
6.00 3.01  4.01 
 
For AR-C150 & 250 models, changes have been made to improve toner correction 
during the life of the developer (prevents over toning etc)
 
 
 
 
 
 
 
 
For AR-C150 and AR-C250 Only:  
 
Before upgrading the firmware, make sure all optics are cleaned and the white 
reference plate is installed correctly. (Refer to ARC150 S/M 11-22). 
 
To maximize the output quality and reduce background levels due to machine over 
toning, it is recommended to upgrade the firmware when the developer is replaced 
(eg – next PM).  It is also possible to upgrade the firmware without replacing the 
developer – please refer to the following procedure:-  
 
If you are performing upgrade and installing new DV 
 
• 
Install the upgraded firmware. Confirm upgrade by using Sim. 22-05
  
(Toner density will not change immediately).  
• 
Replace the developer. 
 
 
 
 
 
Ensure the Developer has been acclimatized before installation. 
• 
Cycle the developer twice using Test Sim.25-01. 
• 
Set the toner density using Test Sim.25-02. 
• 
Restart the copier. 
• 
When the copier is at a “Ready to copy” state, execute Test Sim 44-42  
   (This simulation only needs to be run once to program the new toner correction  
 look up table).  
• 
Recalibrate the engine using Test Sim 46-24. 
TROUBLESHOOTING COPY QUALITY ISSUES 
TECHNICAL BULLETIN 
Date:  
05 July 2002 
Model:  
AR-C150 
Ref.:  
078 
Colour:  
White 
Page:  
1 of 12 
 
 
 
GMA050702 
Sharp Electronics (UK) Ltd., Technical Services Group
 
 
 
 
If you are performing upgrade without installing new DV 
 
• 
Install the upgraded firmware. Confirm upgrade by using Sim. 22-05
  
(Toner density will not change immediately).  
• 
Use Test Sim.64-01 (Pattern13,Density 255, Multi Count 20 CMYK) to 
     reduce 
toner 
concentration. 
• 
Power cycle the copier and execute Test Sim 44-06. 
• 
Re-calibrate the engine using Test Sim 46-24. 
 
 
   Procedure: 
Before carrying out any calibration, ensure the following adjustments have 
 
 
 
 
been checked (especially when either drums or developer have been replaced) 
 
    Process 
Voltages 
 
Verify that both DV & MC Grid bias voltages are adjusted to factory specification:- 
 
Developing Bias Voltage 
 
Colour 
Sim 8-01  Adjustment Value 
K A 
325 
C B 
325 
M C 
325 
Y D 
325 
 
MC Grid Bias Voltage 
 
Colour  
Sim 
8-02 Adjustment Value 
  
AR-C150  AR-C160 AR-C250 
K A 
525 
565 
545 
C B 
525 
555 
545 
M C 
525 
555 
545 
Y D 
525 
555 
545 
 
 
Note: 
If the MC Grid Bias setting is lowered to reduce the “Halo effect”, the 
background level may be increased. 
 
    Drum 
Phase 
Adjustment 
 
    Test 
Simulation 
44-31 
 
 
 
GMA050702 
Sharp Electronics (UK) Ltd., Technical Services Group
 
 
 
 
 
 
 
 
 
 
 
 
Select Print Mode A = 1 and Paper E = 5 if A3 paper is available from CAS4. 
 
 
 
 
 
Press “EXECUTE” to output 8 numbered test patterns. Choose the pattern number 
with the least deflection for Cyan, Magenta & Yellow, and enter the pattern number 
values into locations “B”, “C” & “D”. 
 
[Refer to AR-C150 S/M 7-8] 
 
 
Colour Registration (Main & Sub Scan 
 
Execute Test Simulation 50-22  Auto Registration adjustment or Test Simulation(s) 
50-20 (Main scan) & 50-21 (Sub scan) for manual adjustment of colour registration. 
 
 
Test Simulation 50-22 
 
Press “EXECUTE”. to output a check pattern. Check that the greatest density 
of Cyan and Magenta in MSF/MSR (check pattern 1) is within 1 step of the 
black triangle. 
 
Also, check that the print lines of Cyan, Magenta, and Yellow align with the 
black print lines in check patterns MSF/MSR/SS check pattern 2. 
 
 
 
 
 
GMA050702 
Sharp Electronics (UK) Ltd., Technical Services Group
 
 
 
 
If acceptable and within specification, exit Test Simulation 50-22.  
 
If out of specification, place the check pattern on the platen glass with the 
arrow pointing left, placing 5 sheets of blank paper on top.  
 
Press “EXECUTE”.  
 
The pattern will be scanned, and the display will show a result of “EXACT”, 
“ROUGH”, or “ERROR”. Exit the simulation by using C/A. 
 
“Recheck and “Fine Tune” the Registration by using Test Simulation 50-20 
(Main scan) and 50-21 (Sub scan). 
 
 
Copy Exposure 
 
Test Simulation 46-01 & 46-02 
 
Prior to adjusting colour balance, adjust all Colour and B/W exposure settings 
back to the default value of 50 :- 
 
 
 
 
 
 
Half Tone Correction 
 
 
 
 
 
Test Simulation 44-27 
 
 
Ensure Half Tone Correction is reset back to default ONLY when either Drum(s) or 
 
Developer are replaced. 
   
 
 
 
 
 
 
 
 
 Calibration: 
 Engine 
Calibration 
 
Test Simulation 46-24 
 
Select  A3 paper and press “EXECUTE” to print a half tone test pattern (This 
should be printed on recommended colour paper). Place this pattern onto the 
platen glass so that the darkest density patches are toward the left or exit side of 
the copier. Place 5 sheets of blank paper on top of the test pattern for greater 
accuracy.  
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Here you can view online or download Sharp AR-C150 (serv.man42) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp AR-C150 (serv.man42) Copying Equipment. Information contained in Sharp AR-C150 (serv.man42) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).