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11) Place a white paper (A4, 11" 

×

 8.5") at a slightely shifted position

to the left of the scale. 

12) Select the adjustment mode rear edge void area with the copy

picture quality mode select key. 

(The currently set adjustment value is displayed on the copy
quantity display.)

13) Press the start button. (Make a copy with the document cover

open.)

(A copy is made.)

14) Measure the rear edge void area. 

If the distance between the paper rear edge and the copy image
rear edge is not 2.5 

±

 1.5mm, change the set value and press the

start button. 

The adjustment value can be set in the range of 0 

∼

 99.

(Note)

Use SIM 50-10 to adjust the main scanning direction image posi-
tion 

*

1) If the void area is less than the specified level, the transfer roller,

the fusing roller, the separation pawl, and the paper trnsport sec-
tion are dirtied with toner. 

As a result, print paper is dirtied and paper jams are generated.

*

Name

Scale

Parts code/Price rank

—

*

(Simulation adjustment value)

Left void area

Right void area

Range (MIN)

0

0

Range (MAX)

99

99

Standard value

50

50

Default

50

50

(Image loss, void area djustment)

Left void area

Right void area

Range (MIN)

1.0mm

1.0mm

Range (MAX)

3.0mm

3.0mm

Standard value

2.0mm

2.0mm

*

Test command (Simulation)

MODE

Normal

MAIN CODE

50

SUB CODE

10

*

Enforcement
time

JOB No

Content

S 004

When any part in the scanner
(reading) section is
disassembled or replaced. 

S 009/Ua 002

When the MCU PWB is
replaced. 
In case of U2 trouble

Cycle

—

Conditions

When the copy image area
(image loss, void area) is not
within the specified range. 

*

1) The copy magnification ratio is within the specified range. 

2) The copy distortion is within the specified range.

*

1) Make a test chart as shown below. 

2) Enter the SIM 50-10 mode.

3) Set the test chart made in procedure 1) on the document table. 

4) Make a copy and measure the left and the right void areas.

(Measure the distance from the left/right edge to the image lead
edge.)

If the void area is not within the specified range, perform the
following procdure.

Standard value: 2.0

+

1.0

−

0.5

mm

White paper (A4, 11" x 8.5")
 (Slightly shifted to the left.)

2.5mm

Paper rear edge

Black background
section

Void area

Draw a line.

A4 (11" x 8.5")
 paper

Paper edges

Right void area

Line image
lead edge

Left void area

7 – 13

5) Select the left void area adjustment with the copy picture quality

mode select key. 

(The currently set adjustment value is displayed on the copy
quantity display.)

Adjustment

mode

Adjustment mode display

(LIghting)

Note

Main scanning
direction image
position

Photo copy mode lamp

Main scanning
direction image
position (SPF
mode)

Auto/Photo/Text copy
mode lamp 

Left void area

Auto copy mode lamp

Right void area

Manual copy mode lamp

6) Change the set value and press the start button. 

(The adjustment value is stored and a copy is made.)

When the set value is increased, the void area is increased.

When the set value is decreased, the void are is decreased.

When the void area is changed by 1, the void are is changed by
0.1 mm. 

Repeat procedurs 4) 

∼

 6) until the left void are is within the

specified range. 

7) Select the right void area adjustment with the copy picture quality

mode select key. 

(The currently set adjustment value is displayed on the copy
quantity display.)

Adjust the right void area in the same manner as the left void area
adjustment. 

*

1) If the void area is less than the specified level, the transfer roller,

the fusing roller, the separation pawl, and the paper transport
section are dirtied with toner.

As a result, print paper is dirtied and paper jams are generated.

*

Name

Scale

Parts code/Price rank

—

Content

Preliminary 

work

After-

work

JOB No

JOB No

ADJ M6

Image process
(high voltage)
power adjustment

ADJ 1

Charging voltage
adjustment

ADJ M1

ADJ 2

Developing bias
voltage
adjustment/check

ADJ M1

*

*

Range (MIN)

–1050 V

Range (MAX)

–1200 V

Standard value

–1100 V

Default

–1100 V

*

Test command (Simulation)

MODE

Normal

MAIN CODE

8

SUB CODE

2

*

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.

*

1) Connect between the power PWB and the PCU 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.

7 – 14

*

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.

*

JOB No.

Content

ADJ M1

Copy density adjustment

*

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.

*

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.

*

Range (MIN)

–305 V

Range (MAX)

–315 V

Standard value

–310 V

Default

–310 V

*

Test command (Simulation)

MODE

Normal

MAIN CODE

8

SUB CODE

2

*

Enforcement
time

JOB No

Content

S 009/Ua 004

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.

*

1) Connect between the power PWB and the PCU 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 developing bias voltage is outputted.)

4) Measure the developing bias voltage with the digital multi-meter

(effective value meter).

Adjust VR802 so that the output voltage is –310 

±

 5V.

7 – 15

*

1) Copy (print) defective

(Insufficient density, background copy, dirt, etc.)

(Ghost)

2) The copy density cannot be adjusted with SIM 46-1.

3) Photoconductor damage

*

JOB No.

Content

ADJ M1

Copy density adjustment

*

Name

Digital multi-meter/High voltage probe

Parts code/Price rank

—

Note

Internal impedance of 1000M

Ω

 or

above, effective value measurement
(Recommendable unit: FLUKE
87/FLUKE 80K-40)

*

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.

*

Range (MIN)

+3200V

Range (MAX)

+3700V

Standard value

+3500V

Default

+3500V

*

Test command (Simulation)

MODE

Normal

MAIN CODE

8

SUB CODE

2

*

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.

*

1) Connect between the power PWB and the PCU 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.

7 – 16