ADJ 1
Charging (main charger) voltage
adjustment
∗
Adjustment value
Range (MIN)
–1050 V
Range (MAX)
–1200 V
Standard value
–1100 V
Default
–1100 V
∗
Program used
Test command (Simulation)
MODE
Normal
MAIN CODE
8
SUB CODE
2
∗
Execution condition (time)
Enforcement
time
JOB No
Content
S 009/Ua 004
When replacing the High
voltage/motor drive PWB unit
Cycle
—
Condition
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.
∗
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 charging voltage (main charer) is out-
putted.)
4) Measure the charging (main charger) voltage with a digital multi-
meter (effective value meter, input impednce 1000M
Ω
or above).
Adjust VR801 so that the output voltage is –1050
∼
–1200 V.
Before measurement, connect the capacitor and the diode to the
tip of the digital multi-metar as shown below.
∗
Troubles caused by improper work
1) Copy (print) defective (Insufficient density, background copy, dirt,
etc.)
2) The copy density cannot be adjusted in the proper range with SIM
46-1.
3) The photoconductor is damaged.
∗
After-work
JOB No.
Content
ADJ M1
Copy density adjustment
∗
Necessary tools
Name
Digital multi-meter/High voltage probe
Parts code/Price rank
—
Note
Internal impedance 1000 or above,
effective value measurement
Recommendable unit:
(FLUKE 87/FLUKE 80K-40)
Name
Diode
Parts code/Price rank
VHDSV03///-1
Note
Other type withstand voltage of 2KV or
above can be used instead.
Name
Capacitor
Parts code/Price rank
VCKYQ3FB102K
Note
Other type withstand voltage of 3KV with
1000pF can be used instead.
∗
Note
1) Use a digital multi-meter (effective value meter, internal im-
pedance of 1000M
Ω
or above).
Connect the capacitor and the diode to the tip of the digital multi-
meter for measurement. If the above condition are not satisfied,
the proper measurement of voltage cannot be made.
2) Since a high voltage is outputted, be careful of electric shock.
FO-3800M
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Содержание FO-3800M
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Страница 174: ...SMP1 SMP2 FO 3800M 10 25 ...
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Страница 178: ...SMP9 SMP10 SMP11 Streaks and dots in the pitch of about 78mm Streaks and dots in the pitch of about 45mm FO 3800M 10 29 ...