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117

SEP 2006

Ver. 1.1

DP-8020E/8020P/8016P

DP-LL80

A A Vxxxxx

PU

Destination Code (Copier)

 PU : USA/Canada
 PB : UK

Destination Code (Fax)

 AU : USA/Canada
 AB : UK

Firmware Version (V1xxxx)
Language Code

Firmware Type

 A : Standard
 B, C, D, E : Optional

Model Number

(a)

(AU)

A

c

d

e

j

k

n

Division Soft 
(When it is divided into (a) and (b))

: A-English, C-French & Spanish
: French, German, Italian, Dutch, 
  Portuguese, Spanish, English & Greek
: French, German, Swedish, Norwegian,
  Danish, Finnish, Turkish & English
: French, German, English, Polish, 
  Hungarian, Czech & Russian
: English & Korean
: English & Taiwanese
: English & Chinese

LL80-

A A Vxxxxx

Firmware Version (V1xxxx)

AA: Fixed

SPC

Model Number

SPC

118

SEP 2006

Ver. 1.1

DP-8020E/8020P/8016P

When the following items are replaced or cleaned, perform adjustments in the correct order.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Installation

Cleaning

Replace

Main

Optics

Process Unit

Toner Spill Tray

Scanning Lamp

Platen Glass

OPC Drum

Developer

OPC Drum &

 

Developer

Corona Wire

Process Unit

Toner Density

 

Sensor

LSU

SC PC Board

1

1

3

2

1

2

3

4

3

1

1

1

2

2

2

1

1

1

1

1

3

2

2

2

2

1

4

2

5

3

4

2

4

1

4

3

3

3

2

5

3

6

4

5

3

5

2

Replace Developer

Input F5/F6 Parameter

12

3

119

SEP 2006

Ver. 1.1

DP-8020E/8020P/8016P

1) Press “FUNCTION”, “ORIGINAL SIZE”, and “3” keys sequentially to enter the Service Mode.
2) Press the "9" key to enter the F9 Mode (Unit Maintenance).
3) Press the "START" key.
4) Press "3", and "SET" keys.
5) Press "V", or "/\" arrow keys to select "00 F5/F6 PARAMETERS", and press "SET" key.
6) Prints the memory contents of the F5, and F6 modes.

1) Press “FUNCTION”, “ORIGINAL SIZE”, and “3” keys sequentially to enter the Service Mode.
2) Press the "2", and the "START" keys to enter the F2 Mode (Single Copy Test).
3) Set the exposure to the center position.
4) Set the machine to TEXT / PHOTO Mode.
5) Make a copy of Test Chart 53/54 with gray scale (P/N: FQ-SJ1011), and compare the density to the 

chart shown below. If it is within specification, skip to step (14).

a. Gray scale “A” should not be visible.
b. Gray scale “2” should be clearly visible.

6) Press the "STOP" key to exit the F2 Mode (Single Copy Test).
7) Press the “6”, and the "START" keys to enter the F6 Mode (Adjust Parameters).
8) Enter F6-50 Mode (T/P Mode Image Density).
9) Press the "SET" key to highlight the current value.

10) Enter a new value (up to 3-digits).

The “RESET” key is used to change to a Negative, or Positive (+/-) value.

(+) : Lighter
(-)  : Darker

11) Press the “SET”, and “STOP” keys.

12) Enter F2 Mode (Single Copy Test).
13) Make a copy to confirm the adjustment.

Repeat Steps (3) to (10) until desired density is attained.

F6-49 : T Mode Image Density (Text)
F6-51 : P Mode Image Density (Photo)

14) Press “FUNCTION”, and “CLEAR” keys simultaneously to exit the Service Mode.

A

1

2

3

(Not visible, or hardly visible)

Not visible

Clearly visible

.

.

.

.

.

.

.

.

.

.

.

.

. .

.

.

.

.

.

.

120

SEP 2006

Ver. 1.1

DP-8020E/8020P/8016P

1) Ensure that Ledger / A3 Size Paper is loaded in one of the Trays, and pull out the remaining trays 

(including the bypass tray) to disable them.

2) Press “FUNCTION”, “ORIGINAL SIZE”, and “3” keys sequentially to enter the Service Mode.
3) Press the "8" key to enter the F8 Mode (Service Adjustment).
4) Press the "START" key.
5) Press the "1", "8", and "SET" keys sequentially to enter the F8-18 "C18 PRT PWM ADJ. PTN.".
6) Press the "START" key to begin the LSU PWM Pattern Printing. 

4 gray patches are visible in the illustration, the value of the uppermost patch position is "+2" in 
our example.

7) Press the "STOP" key.
8) Press the "6", and the "START" keys to enter the F6 Mode (Adjust Parameters).
9) Select "39 LSU Unit PWM ADJUST".

10) Press "SET" button, and enter the value of the gray patch, as established in Step (6).

4. LSU Adjustment

Test Pattern

In our sample, 4 patches 
are visible.

(0)

+2

(-5)

(+5)