Iadjustment; How To Use The Adjustment Section; Composition; Adjustments When Replacing Parts - Konica Minolta 7145 Service Manual

7145 series Field Service Ver.4.0 Mar. 2004
I ADJUSTMENT
1. HOW TO USE THE
ADJUSTMENT SECTION
1.1

Composition

This section details adjusting items and procedures.
A. Checking before starting work
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? (e.g. an ele-
vator, air conditioner, or other source of electri-
cal consumption)
4. Is the installation environment suitable?
• The machine must be installed in a wellventi-
lated place free from high temperature, high
humidity and direct sunlight.
• The machine must be installed on a level
floor.
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 platen glass and the slit glass 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 toner bottle?

HOW TO USE THE ADJUSTMENT SECTION

B. Checkpoints when conducting on-site ser-
vice
Be sure to pay due attention to the following
when repairing the machine.
1. Only one side of the AC power line is discon-
nected when the main power of this machine is
turned off. Always unplug the machine before
beginning work. If absolutely necessary 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.
2. ADJUSTMENTS WHEN
REPLACING PARTS
Adjustments (including checks) and settings are not
only required when a defective copy image occurs,
but also after replacing or reinstalling certain parts.
[How to use the tables]
The following items are used in the tables through-
out this section.
1. Mode
Indicates the adjustment mode.
"25" : 25 mode
"36" : 36 mode
"47" : 47 mode
2. Symbols used in the tables
, ................. :
(Empty circle)
1-1
Indicates there is a pri-
ority sequence
adjustments (including
checks) and settings.
: Indicates adjustments
(including checks) and
settings that can be car-
ried out independently.
for