ADJUSTMENT
4 - 1
HOW TO USE THE
ADJUSTMENT SECTION
[1] Structure
This section details adjusting items and procedures. Use this
section for making adjustments and as a checklist before im-
plementing 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? (e.g. an elevator, air conditioner, or other
source of electrical consumption)
4. Is the installation environment suitable?
5. Does the cause of a defective image lie in the original it-
self?
6. Is the density adjusting control at the proper position?
7. Are the platen glass and platen 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, clean-
ing blade, etc.)
10.Is there toner in the machine?
The following items should also be observed when repairing
the machine.
1. Only one side of the AC power line is disconnected when
the main switch of this machine is turned off. Always un-
plug the machine before beginning work. If absolutely nec-
essary to work with the power on, exercise care to avoid
being caught in the scanning rear of the exposure unit.
2. Special care should be taken 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 not only re-
quired when a defective copy image occurs, but also after re-
placing or reinstalling certain parts.
[How to Use the Tables]
The following items are used in the tables throughout this sec-
tion.
1. Mode
Indicates the adjustment mode.
[“47”]: 47 mode
[“25”]: 25 mode
[“36”]: 36 mode
[–] : Normal mode
2. Codes
Indicates the applicable code and/or Copy Quantity key for
each mode.
3. Page
Indicates the page to refer to in the Adjustment section.
4. Conditions
New: Indicates adjustment (including check) is required
when replacing a new part.
Reset:Indicates adjustment (including check) is re
quired when a part has been re-installed.
5. Symbols used in the tables
1 2 ················· Indicates there is a priority sequence
for adjustments (including checks)and
settings.
(Empty circle): Indicates adjustments (including
checks) and settings that can be car
ried out independently.
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