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ADJUSTMENT
HOW TO USE THIS SECTION
This section details adjusting items and procedures. Use this section for making adjustments and as a checklist before implementing corrective measures in the field. 1. Does the power supply meet the requirements? 2. Is the power supply properly grounded? 3. Is the machine sharing its power source with another high current consumption machine that draws large currents intermittently? (for example, an elevator, air conditioner, or other source of electrical consumption) 4. Is the installation environment suitable? a. Keep out of High humidity, direct sunlight, bad ventilation, etc.. b. Make sure that the floor where the machine is installed is level. 5. Does the cause of a defective image lie in the original itself? 6. Is the density adjusting control at the proper position? 7. Are the original glass and original cover clean? 8. Is the correct paper being used for the copy? 9. Are the copying materials and parts replaced when they reach the end of their usable life? (developer, drum, cleaning blade, etc.) 10. Is there toner in the machine? The following items should also be observed when repairing the machine. 1. Both AC power lines are disconnected when the main switch of this machine is turned off. However, the optional PTC heater remains ON and keeps high temperature since the interlock switch is turned ON. So, always unplug the machine before beginning work. If absolutely necessary to work with the power on, exercise care not to get caught in gears or scanning operation of exposure unit. 2. Take special care when handling the fixing unit since it operates at extremely high temperatures. 3. The developing unit is surrounded by a strong magnetic field. Keep watches and metering equipment away from it. 4. Avoid scarring the drum with tools or similar objects. 5. Do not touch IC pins with your bare hands.
ADJUSTMENTS WHEN REPLACING PARTS
Adjustments (including checks) and settings are required not only when a defective copy image occurs, but also after replacing or reinstalling certain parts. [How to Use the Table] The following items in the table are used.
1. Mode
Indicates the adjustment mode. ["47"] : 47 mode ["25"] : 25 mode ["36"] : 36 mode [ -- ] : Normal mode
2. Code
Indicates the applicable code.
3. VR
Caution: All VRs on the boards are for factory adjustment. Do not adjust them. · [--] None · Indicates the VR number on the CB (Control Board). · Indicates the board name when VR is mounted on a board other than the CB.
4. Page
Indicates the page to refer to in the adjustment or diagnostics sections.
5. Conditions
New : Indicates adjustment (including check) is required when replacing a new part. Re-set : Indicates adjustment (including check) is required when a part has been reinstalled.
6. Circled numbers used in the table
1 , 2 ..... : Indicates there is a priority sequence for adjustments (including check) and settings. : Indicates adjustments (including checks) and settings which can be carried out independently.
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ADJUSTMENT
No.
1 Adjusting L Detection (Toner Density)
2
3
4
5
6
7 Lead Edge Erasure Width Adjustment
8
9
10
11
12 HP to Original Lead Edge Distance Adjustment 2
13 Checking and Resetting the Drum Counter 91
Horizontal Magnification Adjustment
Vertical Magnification Adjustment
Mode Code VR No. 1 2 3 4 5 6 7 8 9 10 11 Drum CB (Control Board) 1 Memory IC L1 (Exposure lamp) Optics wire Exposure unit AE sensor Developing DCPS M2 (Optics drive) Other parts for optics drive Part name
"47" "47" "36" "36" "36" "36" "36" 51 98 90 91 93 95 92
"36" "36" "47" 96 97
Page 3 6-24 6-24 6-29 6-29 6-30 6-30 6-31 5-5 5-6 5-7 6-32 6-32 5-4 Conditions New New New New New, Re-set New, Re-set New New New New, Re-set New, Re-set
· "New" means replace with a new unit. "Re-set" means re-installation. · If there is a priority sequence to adjustment, it is indicated as a number inside the circle. · When replacing the memory IC, carry out the necessary settings in the 25 mode. In addition, replace developer and adjust L detection. [Copy counter (developer fatigue correction, drum fatigue correction) data are cleared by L detection adjustment.] *1: Excluding the memory IC *2: Before performing "HP to Original Lead Edge Distance Adjustment", set the lead edge erasure width adjustment data (at 100% and 50%) to zero. *3: Refer to the specified page of 2223 SHB about the adjustment and the setting of each item. (except for the drum count reset.)
5-2
Trail Edge Erasune Width Adjustment
Adjustment and Setting Items
Leading Edge Timing Adjustment
AE Automatic Adjustment
Light Intensity Adjustment
Light Distribution Adjustment
Distortion Adjustment
Focus Adjustment
ADJUSTMENT
ADJUSTMENTS WITH THE P BUTTON
Adjustments that can be made with the P button include setting and checking various parameters, and are therefore referred to as "P functions". P functions may be broadly divided into those available to the end-user and those exclusively for the service technician. In this section, the functions available to service technician are explained.
[4] Setting and Checking the Developing Bias Shift
1. Setting procedures
Step 1 Operation procedure While pressing the P button, press applicable copy quantity setting button for more than 2 seconds (*2). Operation P+(*2)
[1] P Function List
No. 1 0, 2, 4, 6 3 5 7 8 9 Function Checking the total/copy count Setting the developing bias shift Checking the developing bias shift Checking the PM count Checking the drum count Checking the ROM version Service management mode
2
Check the bas shift level (L0 to L3) in the copy quantity indicator.
*2: Developing bias shift
Copy quantity setting button 0 2 4 6
Developing bias indication L0 : 150V L1 : 180V L2 : 200V L3 : 130V
[2] P Function Operating Procedures
1. Turn the main switch ON. 2. While holding the P button, press the desired number of the copy quantity setting buttons, referring to the above P function list. 3. Check data that will be displayed in the copy quantity indicator. 4. Turn the main switch OFF.
2. Checking procedures Step 1 2 Operation procedure While pressing the P button, press "3" key. Check the level of the developing bias shift in the copy quantity indicator (*3). Operation P+3
[3] Checking the Total/Copy Count
Step 1 2 Operation procedure While pressing the P button, press the "1" key. Check the copy or total count value (*1) in the copy quantity indicator. The copy or total count will be displayed two digits at a time in sequence and totaled six digits.
*1: When the 25 mode, address 11 is set to "0", the total count will be displayed. When the 25 mode, address 11 is set to "1", the copy count will be displayed.
Operation P+1
*3: Developing bias voltage for each level
Indication L0 L1 L2 L3 Developing bias indication 150V 180V 200V 130V
5-3
ADJUSTMENT
[5] Checking and Resetting the PM Count
1. Checking procedures Step 1 2 Operation procedure While pressing the P button, press the "5" key. Check the PM count in the copy quantity indicator. The PM count value is the two-digit number × 1000. 2. Resetting procedures Step 1 2 3 Operation procedure Enter the 47 mode Enter code "90" Press the copy button 90 Copy button Operation Operation P+5
[8] Checking the Count Data in the Service Management Mode
In the Service Management Mode, you can check the following count data. (1) ADF paper passage count (2) JAM occurrence count by each point (3) SC occurrence count 1. The service management mode, setting and terminating procedures.
Step 1 2 3 4 Operation procedure Enter the 25 mode. Set the address 25 to "2", and the address 52 to "8". After turning the main Switch OFF, turn it ON again. While pressing the P button, press the "9" key of the copy quantity setting button. 5 "Cod" will be displayed in the magnification display and "PS" will be displayed in the copy quantity indicator. 6 Using the copy quantity setting button, enter the numbers that are set in the 25 mode address 78 and 79. 7 Entering correct values displays "oPE" in the magnification display, and "--" in the copy quantity indicator and the machine goes Copy q'ty setting button P+9 Operation
[6] Checking and Resetting the Drum Count
1. Checking procedures
Step 1 2
Operation procedure While pressing the P button, press the "7" key. Check the drum count value in the copy quantity indicator. The drum count will be displayed two digits at a time in sequence and totaled six digits.
Operation P+7
2. Resetting procedures Step 1 2 3 Operation procedure Enter the 47 mode Enter code "91" Press the copy button 91 Copy button
9
Operation
8
into the service management mode. In case of the service management mode termination, press the stop / clear button while pressing the P button. The machine returns to the regular mode from the service management mode. 10 11 12 13
5-4
P + CLR
[7] Checking the ROM Version
Step 1 2 Operation procedure While pressing the P button, press the "8" key. Check the ROM version in the copy quantity indicator. Operation P+8
Turn the main switch OFF. Enter the 25 mode. Set the address 25 to "0", and the address 52 to "0". Turn the main switch OFF.
ADJUSTMENT
2. Checking the ADF paper passage count
3. Checking the JAM occurrence count by each point
Step 1 2
3
4 5
6
8 9
Operation procedure Operation Enter the service management mode. If 4 of the copy quantity 4 setting button is pressed, "A. dF" will be displayed in the magnification display. If the copy button is pressed, Copy button the machine goes into the ADF count read out mode and lower 3 digits of the 6digit count value will be displayed in the magnification display. Press the magnification mode Mag. mode button. button The magnification mode LED (RE or 1:1) will be lit, and higher 3 digits of the count value will be displayed in the magnification display. In case of the ADF count read Mag. mode out mode termination, press button the magnification mode button to indicate lower 3 digits of the count value. Press the stop / clear button. CLR "oPE" will be displayed in the magnification display and the machine returns to the service management mode.
Step 1 2
3
4
5
6 7
8
9
10
11
Operation procedure Operation Enter the service management mode. 5 If 5 of the copy quantity setting button is pressed, "-J -" will be displayed in the magnification display. If the copy button is pressed, Copy button the machine goes into the JAM count readout mode. RE button Press the RE button to display the code No. (*4) of each JAM occurrence count which you want to check in the copy quantity indicator. Lower 3 digits of the 6-digit count value will be displayed in the magnification display. Press the magnification mode Mag. mode button button. The magnification mode LED (RE or 1:1) will be lit, and higher 3 digits of the count value will be displayed in the magnification display. Press the magnification mode Mag. mode button button to indicate lower 3 digits of the count value (the magnification mode LED will go out.) In case of checking another JAM count, repeat steps 4 to 8. CLR In case of the JAM count read out mode termination, press the stop / clear button. "oPE" will be displayed in the magnification display and the machine returns to the service management mode .
JAM Code J63 J72 J75 J92 J93 J94 J95 J65
*4 Count code for the JAM count Code No. JAM Code Code No. 3 J12 15 4 J13 16 5 J14 17 6 J15 18 11 J31 19 12 J32 20 13 J61 39 14 J62 57
5-5
ADJUSTMENT
4. Checking the SC occurrence count
Step 1 2 Operation procedure Enter the service management mode. If 8 of the copy quantity setting button is pressed, "- SC" will be displayed in the magnification display. 3 If the copy button is pressed, the machine goes into the SC count read out mode. 4 Press the RE button to display the code No. (*5) of the SC count which you want to check in the copy quantity indicator. 5 Lower 3 digits of the 6-digit count value will be displayed in the magnification display. 6 7 Press the magnification mode button. The magnification mode LED (RE or 1:1) will be lit, and higher 3 digits of the count value will be displayed in the magnification indicator. 8 Press the magnification mode button to indicate lower 3 digits of the count value (the magnification mode LED will go out.) 9 10 In case of checking another SC count, repeat steps 4 to 8. In case of the SC count read out mode termination, press the stop / clear button. 11 "oPE" will be displayed in the magnification display, then the machine returns to the service management mode. CLR Mag. mode button Mag. mode button RE button Copy button 8 Operation
*5 Count code for the SC count Code No. 1 5 7 9 11 13 17 19 20 22 23 24 SC Code F18-1 F28-1 F34-1 F35-1 F36-1 F41-1 F42-1 F43 F45-1 F52 F55 F60 Code No. 25 26 27 29 30 31 32 33 34 80 81 SC Code F67 F70 F77 F98 F09 F26 F54 F88 F76 F53 F23
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