∗
Execution condition (time)
Enforcement
time
JOB No
Content
S 009/Ua004
When replacing the high
voltage/motor drive PWB unit
Cycle
—
Condition
1) Print (copy) density is too
dark or too light.
Though copy density
adjustment is executed
with the Test command
(simulation) 46-1,
satisfactory denstiy cannot
be obtained.
2) Ghost is generated.
∗
Work content
1) Connect between the power PWB and the MCU PWB, the high
voltage/motor drive PWB unit and the operation unit with har-
nesses.
2) Manually turn on the cover switch and turn on the power.
3) Execute SIM 8-2.
(The transfer charger voltage is outputted.)
4) Measure the transfer charger voltage (D805) with the digital multi-
meter (effective value meter).
Check that the output voltage is +3200
∼
+3700V. If it is not in the
range, replace the high voltage/motor drive PWB unit.
∗
Troubles caused by improper work
1) Copy (print) defective
(Insufficient density, background copy, dirt, etc.)
(Ghost)
2) The copy density cannot be adjusted with SIM 46-1.
∗
Necessary tools
Name
Digital multi-meter/High voltage probe
Parts code/Price rank
—
Note
Internal impedance of 1000M
Ω
or
above, efffective value measurement
(Recommendable unit: FLUKE 87/
FLUKE 80K-40)
∗
Note
1) Use a digital multi-meter (effective value meter, internal im-
pedance of 1000M
Ω
or above).
If the above conditiosn are not satisfied, the proper measurement
of voltage cannot be made.
2) Since a high voltage is outputted, be careful of electric shock.
ADJ M7
Fusing temperature adjustment
Content
ADJ M7 Fusing temperature
adjustment
ADJ 1
Fusing temperature
adjustment within 20
sheets of continuous print
ADJ 2
Fusing temperature
adjustment after 20 sheets
of continuous print
ADJ 1
Fusing temperature adjustment within 20
sheets of continuous printing
ADJ 2
Fusing temperature adjustment after 20
sheets of continuous printing
∗
Adjustment value
(Test command (simulation) adjustment value)
Fusing temperature adjustment within 20 sheets of continuous print-
ing
Range (MIN)
1 (155°C)
Range (MAX)
5 (175°C)
Standard value
0 (160°C)
Default
0 (160°C)
Fusing temperature adjustment after 20 sheets of continuous printing
Range (MIN)
1 (150°C)
Range (MAX)
5 (175°C)
Standard value
2 (155°C)
Default
2 (155°C)
(Adjustment value)
Fusing temperature adjustment within 20 sheets of continuous print-
ing
Adjust to 160°C.
Fusing temperature adjustment after 20 sheets of continuous printing
Adjust to 155°C.
∗
Program used
Fusing temperature adjustment within 20 sheets of continuous print-
ing
Test command (Simulation)
MODE
Normal
MAIN CODE
43
SUB CODE
1
FO-3800M
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