This manual describes the procedures of the maintenance of the ES1624n printers.
The document is produced for maintenance personnel use. For details on the procedures for handling
the ES1624n of printers, see its user documentation.
Note!
• The descriptions in this manual are subject to change without prior notice.
• In preparing the document, efforts have been made to ensure that the information in it is accurate.
However, errors may be crept into the document. Oki Data assumes no responsibility for any
damage resulting from, or claimed to be the results of, those repairs, adjustments or modifications to the printers which are made by users using the manual.
• The parts used for the printers are sensitive and, if handled improperly, may be damaged. It is
strongly recommended that the products are maintained by maintenance men registered with
Oki Data.
8.2Program/Font ROM Layouts ............................................................................................ 230
42615101TH Rev.56 /
Page 7
1.SPECIFICATIONS
1.1System Configuration
ES1624n
Figure 1-1-1 shows the system configuration of ES1624n
IN1IN2WR
Oki Data CONFIDENTIAL
M
HEAT
Color
Color
M
BELT
M
HOP
M
CID
M
MID
M
YID
Belt Unit
Registration
Belt Unit Fuse
Board-Right
Registration
Cut-Out
Board-Left
Driver Relay Board
Sensor
Density
Up & Low/
Fuser Fuse Cut-Out/
EXIT
Sensor
Thermistor
Inlet
Fuser
Duplex Board2nd Tray Board
HDD
LAN, USB, Centro I/F
LVDS
CU Board
Front Sensor Board
CU-FAN
Video
Interface
fsync × 4,
Isync, wclk)
(data8bit × 4,
Driver
M
KID
Solenoid
Paperfeed
1st
P. E
Sensor
DCON
Command
CU Area
50MHz
DCON I/F, LSYNC
Interface
PU-Board
Humidity Signals
Environment Temperature
8M bit
FLASH
SRAM
MCONCPU
256Kbit
Color Registration,
Fuse Cut-Out,
28MHz
Signals
Density, Thermistor
Exit,
Motor Control
EEPROM
ID
0VL, 0VP
3.3V, 5V, 24V,
Control, etc
Fan, Heater
High Voltage Interface,
Fan Control, Cover-Open
FAN
Thermistor
Heater Frame
AC-SW
FAN
Low-Voltage
Y LED HEAD
K LED HEAD
C LED HEAD
M LED HEAD
Board
Operator Panel
Toner Sensor Board
Sensor
Environment
cut-out
Image drum fuse
sensor
C toner
sensor
M toner
sensor
Y toner
sensor
K toner
Open
Cover-
Belt
Thermistor
Fusing
Sensor
FAN
High Voltage BoardLow Voltage Board
Down
ID UP/
K-IDY-IDM-IDC-ID
Figure 1-1-1
42615101TH Rev.57 /
Page 8
1.2Printer Configuration
The inside of ES1624n printers is composed of the following:
•Electrophotographic Processor
•Paper Paths
•Controller Block (CU and PU)
•Operator Panel
•Power Units (High Voltage Unit and Low Voltage Unit)
Figure 1-2-1 shows the configuration of each printer.
Oki Data CONFIDENTIAL
Figure 1-2-1
42615101TH Rev.510 /
Page 9
1.3Option Configuration
The following options are available for ES1624n.
(1) 2nd Tray
(2) Duplex Unit
Oki Data CONFIDENTIAL
(3) Expansion Memory 64 MB
Recommend to add an optional memory for duplex print, banner print.
(4) Expansion Memory 64/256 MB
Recommend to add an optional memory for duplex print, banner print.
(5) Hard Disk
(6) Upgrade DIMM
42615101TH Rev.513 /
Page 10
1.5INTERFACE SPECIFICATIONS
1.5.1 Parallel Interface Specifications (ES1624n)
1.5.1.1Parallel Interface
ItemDescription
ModeCompatibility mode, Nibble mode, ECP mode
Data bit length8 bits: Compatibility mode, 4bits: Nibble mode,9 bits: ECP mode
1.5.1.2Parallel Interface Connector and Cable
1) Connector
Printer side:36-pin receptacle
Type 57LE-40360-12 (D56) (made by Daiichi Denshi) or equivalent
Cable side:36-pin plug
Type 57FE-30360-20N (D8) (made by Daiichi Denshi) or equivalent
Oki Data CONFIDENTIAL
Connector Pin Arrangement Viewed from Cable Side
2) Cable
Cable length:1.8 m max.
(A shielded cable composed of twisted pair wires is recommended for noise prevention.)
1.5.1.3Parallel Interface Level
LOW: 0 V to +0.8 V
HIGH: +2.4 V to 5.0 V
118
1936
42615101TH Rev.518 /
Page 11
1.5.1.4Timing Charts
Compatible mode
a) Data receiving timing
PARALLEL DATA
(DATA BITs 1 to 8)
nStrobe
0.5 µs min.
0.5 µs min.
0.5 µs max.
0.5
0.5
µ
s min.
µ
s min.
Oki Data CONFIDENTIAL
BUSY
0 min.
nAck
0.5 µs to 3 µs
b) On-line (off-line switching timing by ON-LINE SW)
ON-LINE SW
BUSY
SELECT
100 ms max.
c) Off-line (on-line switching timing by ON-LINE SW)
ON-LINE SW
BUSY
0 min.
0 min.
SELECT
ACKNOWLEDGE
d) nlnit timing (invalid by default)
* Menu-set
50 µs min.
INPUT. PRIME
BUSY
SELECT
ACKNOWLEDGE
42615101TH Rev.519 /
5µs max.
Page 12
Oki Data CONFIDENTIAL
1.5.1.5Parallel I/F Signals
Table 1-1 shows interface signal names and pin numbers.
Table 1-1 Signals
Pin No.Signal NameSignal DirectionFunctions
1Nstrobe (HostClk)→PRPulse for reading data in at trailing edge.
2DATA 1
3DATA 2
4DATA 38-bit parallel data.
5DATA 4→PREach signal is HIGH when data is logical 1 and
6DATA 5LOW when it is logical 0.
7DATA 6
8DATA 7
9DATA 8
10nAck (PtrClk)←PRIndicates the completion of data reception.
11Busy (PtrBusy)←PRIndicates whether the printer is ready for receiving
data. Data cannot be received while the signal is
HIGH.
12PError (AckDataReq)←PRIndicates paper error when held HIGH.
13Select (Xflag)←PRHIGH without exception when the parallel
interface is enabled.
14NAutoFd (HostBusy)→PRUsed in bidirectional communication.
15--Unassigned.
16GND-Signal ground.
17FG-Chassis ground.
18+5V←PRUsed for supplying +5V. Power cannot be
supplied to the outside of the printer.
19
~GND-Signal ground.
30
31Nlnit (nlnit)→PRInitializes the printer when held LOW.
32NFault (nDataAvail)←PRLOW during alarm.
33GND-Signal ground.
34--Unassigned.
35HILEVEL←PRPulled up to +5V at 3.3KΩ inside the printer.
36Nselectin→PRUsed in bidirectional communication. Low without
(IEEE 1284 active)exception in compatible mode.
Note:
42615101TH Rev.520 /
Parenthesized signal names are used in nibble mode.
Only functions in compatible mode are listed.
This printer supports the IEEE std 1284-1994 nibble mode. Note that, when used with
personal computers or cables that do not comply with the standards, the printers may
exhibit unpredictable behavior.
Page 13
1.5.2 Universal Serial Bus (USB) Interface Specifications(ES1624n)
1.5.2.1USB Interface
(1) Basic specifications
Conforms to USB specification, revision 1.1.
(2) Transmission mode
Full speed (max. 12 Mbps + 0.25%)
(3) Power Control
Self-power device
1.5.2.2USB Interface Connector and Cable
(1) Connector
Printer side:Type B receptacle
Upstrem port
UBB-4R-D14T-1 (made by JST) or equivalent
Oki Data CONFIDENTIAL
Connector pin layout
2
34
Cable side:Type B plug
(2) Cable
Cable length:5 m max. (cable compliant with USB specification, revision 1.1)
RJ-45 anti-Shield twist pair cable with connector (Category 5 recommended)
1.5.3.3Network Interface Signals
Pin No.SignalsSignal DirectionFunctions
1TXD+FROM PRINTERSend Data +
2TXD-FROM PRINTERSend Data -
3RXD+TO PRINTERReceived Data +
4--Unassigned
5--Unassigned
6RXD-TO PRINTERReceived Data -
7--Unassigned
8--Unassigned
42615101TH Rev.522 /
Page 15
2.Operation Description
2.1Electrophotographic Process Mechanism
(1) Electrophotographic Process
Following describes the outline of an electrophotographic process incorporated into printers.
1. Charging
Applying a voltage to a charging (CH) roller charges the surface of an optical
photoconductive (OPC) drum.
2. Exposure
The surface of the drum having a charge is exposed to light an LED head emits under
each image signal. Segments of the surface have a reduced charge according to the
intensities of the light they receive, a static latent image being created on the surface
based on electrical potentials on the surface
3. Development
Charged toner is attracted to the latent image of the drum by static electricity and
makes the image visible on the surface of the drum.
Oki Data CONFIDENTIAL
4. Transfer
Paper is brought into contact with the drum, and applied with a charge by a transfer
roller from the back, the toner image being transferred to the paper.
5. OPC Drum Cleaning
A drum cleaning blade removes residual toner from the drum after the transfer.
6. Transfer Belt Cleaning
A belt cleaning blade removes residual toner from a transfer belt.
7. Fusing
Heat and pressure fuses the toner image to the paper.
(2) Charging
Voltage is applied to a CH roller contacting the surface of an OPC drum, depositing a charge
over the surface.
CH Roller
Power
Supply
Unit
-
-
-
-
-
-
OPC Drum
42615101TH Rev.523 /
Page 16
Oki Data CONFIDENTIAL
(3) Exposure
The surface of the charged drum is exposed to light emitted from an LED head. Charges of
segments of the surface are reduced according to the intensities of the light the segments
receive, a static latent image being created on the surface.
LED Head
CH Roller
Power
Supply
Unit
OPC Drum
(4) Development
Toner is attracted to the latent image on the surface of the drum, making the image a toner
image.
-
-
-
-
-
-
-
-
-
Paper
1. The sponge roller supplies toner onto the developing roller.
Developing Blade
LED Head
OPC Drum
CH Roller
-
-
-
-
-
-
-
-
-
-
-
-
OPC Drum
Developing Roller
2. The latent image on the surface of the drum is made visible by the toner.
Sponge Roller
42615101TH Rev.524 /
Page 17
Oki Data CONFIDENTIAL
(5) Transfer
The paper made contact with the surface is applied with a charge by the roller from the back.
Applying high voltage provided by a power supply to the roller transfers the roller-induced
charge to the surface of the paper at the contact between the roller and the paper, attracting
the charged toner from the surface of the drum to the surface of the paper.
-
-
-
OPC Drum
-
-
-
-
-
-
-
-
-
-+-
+
Transfer Roller
+
+
-+-+-+-+-+-
-+-
-+-
-
-
-
+
+
-
+
-
+
-
+
-
+
Paper
Transfer Belt
Power
Supply
Unit
42615101TH Rev.525 /
Page 18
Oki Data CONFIDENTIAL
(6) Fusing
When passing between a heat roller and a backup roller, the toner image transferred to the
paper is fused into place with heat and pressure.
A safety thermostat is provided and, when the temperature of the heat roller rises to or exceeds
a predetermined temperature, it opens, cutting off voltage supply to the heater.
Thermostat
Thermistor
Heat Roller
Halogen Lamp
Paper
Backup Roller
Fusing Temperature Settings
Media Weight
Paper Type Settings
Light
Heavy
Light
Medium
Heavy
U.Heavy
OHP
Thermistor
Temperature Settings
Warm
High
Warm
Low
Low
42615101TH Rev.526 /
Page 19
Oki Data CONFIDENTIAL
(7) OPC Drum Cleaning
Unfused, residual toner on the drum is scraped off with a drum cleaning blade, and collected
in the waste toner area of a toner cartridge.
Waste Toner Area
Toner Cartridge
Image Drum (ID) Unit
-
Drum Cleaning Blade
-+-
-+-+-+-
-+-
-+-
+
+
+
+
-
-
-
+
-
+
(8) Transfer Belt Cleaning
Residual toner on a transfer belt is scraped off with a belt cleaning blade, and collected in the
waste toner box of a transfer belt unit.
Transfer Belt
Waste Toner Box
Belt Cleaning Blade
42615101TH Rev.527 /
Page 20
2.2 Printing Processes
Paper fed from a tray 1 or 2 is forwarded by Hopping roller, Registration Roller L and Feed roller.
When feeding paper from a multiple tray, it is forwarded by a MPT Hopping roller and Registration
Roller U. Then, the paper is moved onto a transfer belt and, through K, Y, M and C electrophotographic
processes performed taking their turns, a yet-to-be-fused toner image is produced on the paper.
While the paper passes through a fuser unit, heat and pressure fuses the toner to the paper. After
the fusing process, the paper is ejected to a face-up or face-down stacker, whichever is selected
according to whether the face-up stacker is opened.
These operations are performed in single-side printing. Following are operations in two-side
(duplex) printing.
In duplex printing, paper passed through a fuser unit after it is first printed on the back is fed into
a duplex unit via a dup-in separator. Reversing roller’s reversing operation sends the paper via a
paper reversing path into the duplex unit. After Feed rollers on a paper path in the duplex unit pass
the paper through the unit, the paper is fed via a paper feeding path routed from the unit. Then,
the paper is forwarded to the same route from the tray. After that, the same operation as that
performed after the paper moving by the first registration roller L in single-side printing using tray
feeding is performed.
Oki Data CONFIDENTIAL
Face-up Stacker
Dup-In Separator
Reversing Roller
Face-down Stacker
Heat Roller
Halogen Lamp
Backup Roller
Paper Reversing Path
MPT Hopping Roller
Transfer Belt
MPT
Registration Roller U
Feed Rollers
Registration Roller L
Hopping Roller
Sub Roller
Sub Roller
Feed Roller
Hopping Roller
42615101TH Rev.528 /
Page 21
Oki Data CONFIDENTIAL
(1) Paper Feed from 1st Tray
1. As indicated in Figure 2-1, when the solenoid is ON, the registration motor rotates (CCW),
and transports the paper until IN1 sensor turns ON. (The hopping roller rotates when the
solenoid is ON.)
2. When IN1 sensor is ON, a constant number of sheets are transported against registration
roller L. (This corrects paper skewing.)
3. As indicated in Figure 2-2, the solenoid is turned OFF and paper is fed with registration roller
L. (The registration roller L feeds the paper when the solenoid is OFF.)
Registration Roller U
(Drive)
WR Sensor
Hopping Gear Assy
Solenoid Lever
(Solenoid ON)
Sub Roller
(Drive)
Hopping Roller
(Drive)
Paper
Figure 2-1 Figure 2-2
(2) Paper Feed from MPT
1. As indicated in Figure 2-3, when the solenoid is OFF, the registration motor rotates (CW)
and continues to transport paper until IN2 sensor turns ON. (The MPT hopping roller drives
the paper until the registration motor rotates in the CW direction.)
2. When IN2 sensor is turned ON, a constant number of sheets are transported against
registration roller U. (This corrects paper skewing.)
IN2 Sensor
Registration Roller L
(Stop)
IN1 Sensor
Registration Motor
(CCW)
Registration Roller U
(Drive)
WR Sensor
Solenoid Lever
(Solenoid OFF)
Sub Roller
(Stop)
Hopping Roller
(Stop)
IN2 Sensor
Registration Roller L
(Drive)
IN1 Sensor
Registration Motor
(CCW)
3. As indicated in Figure 2-4, the registration motor rotates (CCW), and transports the paper
with registration roller U. (The registration roller U feeds the paper when the registration
motor rotates in the CCW direction.)
IN2 Sensor
Registration Roller U
(Stop)
WR SensorWR Sensor
Hopping Gear Assy
Solenoid Lever
(Solenoid OFF)
MPT Hopping Roller
PaperPaper
Hopping Gear Assy
Solenoid Lever
(Solenoid OFF)
Registration Motor
(CW)
Registration Roller U
(Drive)
IN2 Sensor
Registration Motor
(CCW)
Figure 2-3 Figure 2-4
42615101TH Rev.529 /
Page 22
Oki Data CONFIDENTIAL
(3) Carrier Belt
1. The running of the carrier belt motor in the direction of the arrow drives the carrier belt. The
belt unit sits with one carrier roller immediately below each color’s drum, and the carrier belt
between them. By the application of a fixed voltage, the carrier belt and carrier roller feed
paper on the carrier belt into the fuser unit, transferring a toner image on each color’s drum.
Drum
Carrier belt
KYMC
Carrier (transfer) roller
Figure 2-5
Carrier (transfer) belt motor
42615101TH Rev.530 /
Page 23
Oki Data CONFIDENTIAL
(4) ID Unit Up/Down Operations
1. The C-ID motor drives the ID unit up and down.
2. Figure 2-6 indicates ID unit operations during color printing. When the C-ID motor rotates
(CCW), the lift uplink slides to the left, and as indicated in Figure 2-6, each ID unit moves
DOWN. The printer is now ready for color printing.
3. Figure 2-7 indicates the ID unit operations during monochrome printing. When the C-ID
motor rotates (CW), the lift uplink slides to the right, and as indicated in Figure 2-7, all units
other than the K-ID moves UP. The printer is now ready for black-and-white printing.
ID Unit Operations During Color Printing
C-ID Unit down
C-ID Unit
M-ID Unit down
Y-ID Unit down
K-ID Unit down
Lift uplink
C-ID Motor
(CCW)
Figure 2-6
ID Unit Operations During Monochrome Printing
C-ID Unit
C-ID Unit lift up
M-ID Unit lift up
Y-ID Unit lift up
K-ID Unit down
M-ID UnitY-ID UnitK-ID Unit
M-ID UnitY-ID Unit
K-ID Unit
Lift uplink
C-ID Motor
(CW)
Figure 2-7
42615101TH Rev.531 /
Page 24
Oki Data CONFIDENTIAL
(5) Fuser Unit and Paper Expeller
1. As indicated in Figure 2-8, a single pulse motor drives the fuser unit and expeller roller. The
heat drum turns when the fuser motor turns (CCW). This drum transfers the toner image
on the paper by high temperature and pressure.
2. At the same time, the expeller roller expels the paper.
Eject Roller
(Drive)
Fuser Unit
Heat Roller
(Drive)
Fuser Motor
(CCW)
Figure 2-8
(6) Operations when the Color Drift Sensor and Density Sensor Cover is Opened
1. As indicated in Figure 2-9, when the fuser motor rotates (CW), the cover open gear rotates
and then opens the cover of the color drift sensor and density sensor.
2. When the fuser motor turns in the reverse direction (CCW), the cover open gear bite no
longer meshes, and then the color drift sensor and the density sensor cover closes.
Eject Roller
(Stop)
Heat Roller
(Stop)
Cover Open Gear
Fuser Motor
(CW)
Figure 2-9
42615101TH Rev.532 /
Page 25
Outline of Color Misalignment Adjustment Method
Adjustment patterns printed on a transfer belt are read using sensors that are installed inside a
sensor shutter placed under a transfer belt unit, for adjusting color misalignments. The sensor
detects the patterns for adjusting color misalignments.
Auto-Start timing for Color registration
• In power-on
• When a cover is closed after the cover is open in a short time
• When printing 400 pages or more after the previous implementation
Toner amounts on the produced patterns, contamination of the sensor with toner, problems with
opening or closing of the sensor shutter, or other reasons, a color misalignment adjustment error
may occur. No control panel display of the error is provided. In such cases, adjustments on any
color misalignments (Section 5.4.2.6) are forced to be executed by the Self-diagnostic Mode and
displayed errors must be checked.
Oki Data CONFIDENTIAL
Transfer Belt
Belt Motor
Sensor Shutter
Color Registration Sensor
Belt Waste Toner Box
Color Registration Sensor
Right Color Misalignment Adjustment Pattern
Left Color Misalignment Adjustment Pattern
Belt Cleaning Blade
Color Registration Sensor
42615101TH Rev.533 /
Page 26
Oki Data CONFIDENTIAL
How to check errors and Handling of the errors
Confirm with the color registration adjustment test of the self-diagnostic mode (Section 5.4.2.6)
Handling for each error
•CALIBRATION(L or R), DYNAMICRANGE(L or R)
Check 1Check a connection state of a sensor cable (FFC) if the above description
appears.
Correct to a normal state if the connection state is wrong.
Check 2Check that the surface of the sensor is clean without paper dust and toner.
Wipe it off if it is dirty.
Check 3Check whether an opening-closing motion of the sensor shutter is normal with
MOTOR&CLUTCH TEST of the self-diagnostic mode.
Exchange the shutter unit when the opening-closing motion is not complete.
•BELT REFLX ERR
Check 4Check a cleaning state of the toner left on a belt surface besides the above
Check 1, 2, and 3 if this message appears.
Take the belt unit out of the device and check that the belt surface is clearly
cleaned by rotating a drive gear in the back at the left side.
Exchange a belt unit when a toner of the belt surface is left and it is not clean even
if the drive gear rotates.
•(Y or M or C) LEFT, (Y or M or C) RIGHT, (Y or M or C) HORIZONTAL
Check 5Check that a toner is not deficient due to NG color when the above message
appears.
Exchange a toner cartridge if needed.
42615101TH Rev.534 /
Page 27
Outline of Print Density Adjustment Method
Adjustment patterns printed on a transfer belt are read using sensors that are installed inside a
sensor shutter placed under a transfer belt unit, for adjusting print density.
Auto-Start timing of Print Density Adjustment
• When environment is different considerably compared to the previous implementation in power-on
• At least 1 or more from 4 ID count values is almost new in power-on
• When ID count value is over 500 from the previous implementation
Toner amounts on produced patterns, contamination of optical sensors with toner, problems with
opening or closing of the sensor shutter, or other reasons, a print density adjustment error may
occur. No control panel display of the error is provided. In such cases, print density adjustments
(Section 5.4.2.7) on defective colors are forced to be executed by the Self-diagnostic Mode and
displayed errors must be checked.
Oki Data CONFIDENTIAL
Transfer Belt
Belt Motor
Sensor Shutter
Density Sensor
Density Sensor
Belt Waste Toner Box
Belt Cleaning Blade
Print Density Adjustment Pattern
42615101TH Rev.535 /
Page 28
Oki Data CONFIDENTIAL
How to check errors and Handling of the errors
Confirm with the color registration adjustment test of the self-diagnostic mode (Section 5.4.2.7)
Handling for each error
•CALIBRATION ERR, DENS SENSOR ERR
Check 1Check a connection state of the sensor cable when the above message
appears.
Correct to a normal state if the connection state is wrong.
Check 2Check that the surface of the sensor is clean without paper dust and toner.
Wipe it off if it is dirty.
•EDENS SHUTTER ERR
Check 3Check whether an opening-closing motion of the sensor shutter is normal with
MOTOR&CLUTCH TEST of the self-diagnostic mode.
•DENS ID ERR
Check 4Check that there is no abnormal blushing on a drum surface by taking an ID unit
out.
Exchange a LED head (Defocusing) or exchange an ID unit.
Apply FUSE KEEP MODE of the maintenance menu when a new ID unit is used
as a test.
42615101TH Rev.536 /
Page 29
Principle of Detection by Toner Sensors
Movements of that sensor lever of a toner cartridge which is powered by an image drum (ID) motor
are read by a toner sensor for detecting that the cartridge is low on toner. The lever moves
concurrently with movement of a mixing bar placed in the cartridge. With the lever, or the sensor,
contaminated with toner etc., or the cartridge not facing the sensor properly due to improper ID unit
or toner cartridge installation, the sensor may not properly detect the cartridge being low on toner,
causing a toner sensor error.
Sensor Lever
Oki Data CONFIDENTIAL
Principle of the toner counter
After image data is developed to binary data which is printable, Dot counter counts the data as print
dots in LSI. Calculate the amount of the used toner with this count value to display a remaining
amount. Meanwhile, the toner LOW detection by the toner sensor has a function that Toner LOW
is detected when toner quantity in side of the toner cartridge is under a certain amount physically.
Principle of ID, Belt andFuser counter
ID counter: One third of the amount of drum rotation when three sheets of A4 paper is
printed continuously is regarded as one count.
Belt counter : One third of the amount of belt rotation when three sheets of A4 paper is printed
continuously is regarded as one count.
Fuser counter: On the basis of paper length of Leagal 13 inch, if it is 13 inch or less, it is
regarded as 1 count. If it is over 13 inch , the number of counters is determined
by multiples of Leagal 13 inch.(Round off to an integer value)
Toner Sensor
Side Plate
Toner Cartridge
42615101TH Rev.537 /
Page 30
Oki Data CONFIDENTIAL
3. Printer Installation
3.1 Precautions and Prohibition
• Keep away from high temperatures and open flames.
• Please do not install in a place from which a chemical reaction is started (laboratory etc.).
• Do not install near inflammable solutions such as alcohol or thinner.
• Keep out of reach of children.
• Do not install on an unstable surface (the shaky stand, leaning place, etc.).
• Keep away from dust, humidity and direct sunlight.
• Keep away from the sea breeze and corrosive gases.
• Keep away from sources of vibration.
• Pull the power plug out of the socket and contact with a customer's service centre when the printer
is dropped or the cover is damaged.
There is a risk of getting an electric shock and/or causing fire leading to personal injury.
• Do not use a power code, a printer cable, or a ground wire other than those that are indicated in
User's Manual.
Doing so may case fire.
• Do not insert materials in a vent hole.
Doing so may cause an electric shock and/or fire leading to personal injury.
• Do not put a cup with liquids such as water on the printer.
Doing so may cause an electric shock and/or fire leading to personal injury.
• Do not touch the fuser and other parts when opened the cover.
Doing so may result in getting burns.
• Do not throw toner cartridges and image drum cartridges into fire. Doing so may cause dust
explosion leading to get burns.
• Do not use an inflammable spray near the printer. Failure to follow may cause fire since there is
an area heating up within the printer.
• Pull the power plug out of the socket and contact with a customer's service centre when the cover
is unusually hot, smoking, giving off questionable odour, or making a strange noise.
There is a risk of fire.
• Pull the power plug out of the socket and contact with a customer's service centre when a liquid
such as water enters in the internal parts of the printer.
There is a risk of fire.
• Pull the power plug out of the socket and remove foreign materials such as clips when they fall
inside the printer.
There is a risk of getting an electric shock and/or causing fire leading to personal injury.
• Do not operate and/or disassemble the printer other than that which is directed in User's Manual.
Doing so may cause an electric shock and/or fire leading to personal injury.
42615101TH Rev.538 /
Page 31
Oki Data CONFIDENTIAL
• Do not block the vents on the printer.
• Do not place printer directly onto a carpet.
• Ensure printer has adequate ventilation.
• Keep printer way from sources of noise and magnetic fields.
• Do not install near a monitor or television.
• Please lift both sides when moving the printer.
Since this printer has about 25kg of weight, please raise by two or more persons
•
•
Do not come closer to the paper's exit area when the power is turned on, and while in printing.
.
Doing so may result in personal injury.
Explain instructions for use and settings to customers, showing instructions of the user’s manual.
Especially, explain the power cord and earth cable carefully.
42615101TH Rev.539 /
Page 32
3.2 Printer Unpacking Procedure
Personal injuries may occur.
Each printer weighs about 25 kg. Lift it by more than one person.
• Punch four handle holes each on the side, or the end, of the carton box as shown below,
to lift it.
Oki Data CONFIDENTIAL
Handle Holes
(each on side or on end)
42615101TH Rev.540 /
Page 33
3.3 Printer Installation Instructions
• Printers must be installed in a place that meets the following temperature and humidity
conditions:
Ambient Temperature: 10 to 32°C
Ambient Humidity: 20 to 80% relative humidity
Maximum Wet-Bulb Temperature: 25°C
• Take care not to allow dew condensation on printers.
• When installing printers in an area of which ambient humidity is 30% or less, use a humidifier or
antistatic mat.
Installation Space
• Place printers on a flat table having the size that allows their legs to fit on the table.
• Leave sufficient space around each printer.
Top View
Oki Data CONFIDENTIAL
Side View
60cm
20cm
100cm
20cm
70cm
42615101TH Rev.541 /
Page 34
3.4 Packed Units and Attachments
• Check the packed units are free of flaws and dirt.
• Check there are no missed attachments, or damage to the packed attachments.
• Should any defective or unusual conditions are found, contact the section in charge.
Personal injuries may occur.
Each printer weighs about 25 kg. Lift it by more than one person.
■■Printer (main body)
Oki Data CONFIDENTIAL
■■Image Drum Cartridges with Starter Toner Cartridges (four sets) (contained in printer)
Explain that a toner cartridge and image drum cartridge is separable to customers.
■■Printer Software CD-ROM
■■LED Lens Cleaner
■■Power Cord
■■Warranty and Registration Card
■■Users Manual (Setup Guide)
■■Users Manual on CD-ROM
■■Quick Guide
■■Quick Guide Bag
Note!
No printer cables are included in printer packages.
42615101TH Rev.542 /
Page 35
3.5 Assembly Procedure
3.5.1 Printer Main Body
Remove Protective Equipment
(1) Remove protection tapes (5) of the front of the printer and protection tapes (2) of the back.
(2) Remove the paper cassette.
(3) Pull out the retainer frontward.
Oki Data CONFIDENTIAL
Paper
Protective Tape
Protective Tape
OPEN button
(4) Press the OPEN button to open the top cover.
(5) Pulling down the lever (blue) of the fuser unit in the direction of the arrow 1, remove the
stopper release (orange color).
Note!
Instruct the user of the printer to be sure to keep the stopper release, which is used for
transporting the printer, at hand.
Lever (blue) of Fuser Unit
Retainer
1
2
Stopper Release (orange color)
42615101TH Rev.543 /
Page 36
Install Image Drum Cartridges
(1) Take image cartridges (Four cartridges) with toner cartridges softly.
Oki Data CONFIDENTIAL
Note!
• Take sufficient care in handling the image drums (green cylindrical parts), which are
very sensitive.
• Do not expose the image drum cartridges to direct sunlight, strong light (of about 1500
lux. or more) or, for five minutes or more, room light.
• Make sure that a blue lever of the toner cartridge should not be moved here.
Toner Cartridge
Image Drum Cartridge
(2) Put an image cartridge on a flat desk and remove tape holding a protection sheet. Then,
pull it in the direction of an arrow.
Note!
Make sure to work with an image drum putting on a desk.
Protective sheet 1
Tape
Protective sheet 1
Protective sheet 2
(3) Pull protective sheet 2 in the arrow direction from image drum cartridge.
Protective sheet 2
42615101TH Rev.544 /
Page 37
Oki Data CONFIDENTIAL
(4) Make sure the labels of the image drum cartridges have the same colors as the labels
beside the places of the cartridges, respectively.
(5) Reinstall the four image drum cartridges carefully.
Image Drum Cartridge
Label
Label
(6) Turn the blue lever of the toner cartridge in the arrow direction until it stops completely.
Note!
• 1500 pages are printable with Starter toner (a toner cartridge which is attached at the
time of purchase) under the condition of A4 and 5% print density.
• Make sure that a lever of the toner cartridge turn in the arrow direction until it stops
completely when [REPLACE THE TONER] remains displayed.
• It is invalid to use Starter toner once a regular toner cartridge is used. Use Starter
toner up first, and then a regular toner should be used.
• The starter toner should be replaced after displaying [ORDER TONER].
If it is replaced before the display, the correct remaining amount of the toner is not
displayed.
Blue
Lever
42615101TH Rev.545 /
Page 38
Load Paper in Paper Cassette
(1) Slide out the paper cassette.
Note!
Do not remove the rubber from the plate.
(2) Place the paper stopper in the position of the size of print paper.
Paper Stopper
Oki Data CONFIDENTIAL
Paper Guide
Plate
(3) Sufficiently loosen the paper, and jog the paper so as that its edges line up.
(4) Load the paper face down in the paper cassette.
Note!
• Print paper must be placed in the paper cassette so as to touch sides of the paper
cassette.
• Loaded print paper must not exceed the position pointed by the inverted triangles
▼▼)(300 sheets for 70-kg paper).
(
(5) Secure the paper with the paper guide.
(6) Slide the paper cassette back in.
Place Print side down.
Paper guide
42615101TH Rev.546 /
Paper life display
Page 39
Load Paper in MP (Multipurpose) Tray
(1) Open the MP tray and then the paper supporter.
(2) Align the manual feeding paper guide with the size of print paper.
(3) Jog the paper so as that its edges line up.
Oki Data CONFIDENTIAL
MP Tray
Manual Feeding Paper Guide
MP Tray
Paper Supporter
Manual Feeding Paper Guide
(4) Insert the paper face up, straight along the paper guides for manual feeding, as far as it
will go.
(5) Press the setup button.
Setup Button
42615101TH Rev.547 /
Page 40
Oki Data CONFIDENTIAL
3.5.2 Power Cable Connection
Conditions for Power Supplies
• The following conditions apply to the power supplies of printers:
Alternate Current (AC): 100 V ±10%
Power Supply Frequency : 50, or 60 ±2 Hz
• For unstable power supplies, use voltage regulators etc.
• The maximum power consumptions of printers are 950 W. Be sure power supplies have power
supply capacities adequate for the printers.
It may expose you to electric shocks or cause a fire.
• Make sure to turn off printers before attaching and detaching power supply cords and grounding
wires to the printers.
• Grounding wires must be connected to dedicated grounding terminals. Never connect them to
water or gas pipes, or telephone grounds, lighting conductors or other lines.
• Be sure to insert or remove power supply cords by pushing or pulling on the plugs.
• Insert power supply plugs into receptacle outlets as far as they will go.
• Do not insert or pull out power supply plugs with wet hands.
• Install power supply cords in a location where they will not be trodden, and do not place things on
them.
• Do not tie, in bundles, or knot power supply cords in use for printers.
• Do not use damaged power supply cords for printers.
• Do not use star-burst connections for printers.
• Do not connect a printer to the same receptacle outlet being used for electrical equipment other
than the printer. Connecting a printer such a receptacle outlet, particularly being used for air
conditioning, copying or shredding equipment, may cause a malfunction in the printer due to
electrical noises. If a printer is connected to such a receptacle outlet by necessity, use a
commercially available noise filter or noise-cut transformer.
• For power supply cords of printers, use only those packed with the printers.
• Do not use extension cords for printers. If they are used by necessity, select cords with a rating
of 15 A or more.
• Printers may not function correctly when used with extension cords.
• Do not turn off printers or pull out their power supply plugs while the printers are printing.
• Please disconnect printers from the mains supply if they will not be used for an extended period
of time.
Explain connections of the power cord and earth cable to customers carefully, showing the user’s
manual.
42615101TH Rev.548 /
Page 41
Connect Power Supply Cord
Oki Data CONFIDENTIAL
Note!
Be certain the power switch is placed in the OFF (O) position.
(1) Plug the power supply cord in the printer.
(2) After the grounding wire is connected to the grounding terminal. Insert the power supply
cord into the receptacle socket.
OI
Press ON (I) of Power Switch
Grounding Terminal
Grounding Wire
OI
The control panel provides messages as shown below and, after the printer is activated
completely, it displays [ONLINE].
R A M C H E C K
I N T I A L I Z I N G
[ONLINE] and [CHECK] lamps,
and the backlight blink.
O N L I N E
T R A Y 1
42615101TH Rev.549 /
Page 42
Turning off the Printer
Turn off the printer without an internal hard disk (option) and in ES1624n.
Oki Data CONFIDENTIAL
OI
Note!
Do not turn OFF the printer while printing.
In case that an internal hard disk (option) is installed, follow the procedure as shown below
without turning off the printer immediately.
Note!
• The internal hard disk may be damaged and unusable if the printer is switched off
immediately.
• [SHUTDOWN MENU] is displayed only when an optional internal hard disk is installed.
(1) Press the "MENU +" switch a couple times to show [SHUTDOWN MENU].
(2) Press the "ENTER" switch to show [SHUT DOWN START/EXECUTE].
(3) Press the "ENTER" switch.
[SHUTDOWN] is displayed and shutdown process is executed.
(4) Press the power switch OFF(O) after [TURN OFF POWER/ SHUTDOWN IS COMPLETED]
is displayed.
OI
42615101TH Rev.550 /
Page 43
3.5.3 Installation of Optional Components
(1) Extension Memory Installation
ES1624n Expansion Memory
Model name
Memory Size (total memory size)
Oki Data CONFIDENTIAL
None (standard)
MLMEM64C
Note!
• Be sure to use Oki Data genuine memory. Printers do not operate using memory
64MB (64MB)
+64MB (128MB)
other than Oki Data genuine memory.
•Installing 64-MB extension memory in printers is recommended for the printers to print
both sides of paper.
• Installing 64-MB extension memory in printers is recommended for the printers to print
banner-sheet paper.
• One memory slot is provided.
•
Power Off Printer and Remove Power Supply Cord
Note!
nstalling options to printers while the printers are powered on may cause a problem with
the printers.
OI
Open Top Cover and Front Cover
Top Cover
Front Cover
OPEN Button
Handle
42615101TH Rev.551 /
Front Cover
Page 44
Remove Side Cover
(1) Loosen the screw (at one place).
(2) Remove the side cover. It can become detached by moving it upward and outward.
Front Cover
Screw
1
Oki Data CONFIDENTIAL
Top Cover
2
Side Cover
Install Memory
ES1624n
(1) Remove static electricity by bringing a bag into contact with a metal part before the memory
is taken out of the bag.
(2) Insert the memory into an empty slot.
(3) Make sure that the memory is completely held by the right and left lock lever.
Note!
• Do not touch electronic components and connector terminals.
• Be careful of the memory direction. There is a cutting part to adapt to the connector of
the slot.
Lock Levers
42615101TH Rev.552 /
Page 45
Oki Data CONFIDENTIAL
(1) Remove static electricity by bringing a bag into contact with a metal part before the memory
is taken out of the bag.
(2) Insert the memory into an empty slot.
(3) Make sure that the memory is held completely by the top and bottom lock lever.
Note!
• Do not touch electronic components and connector terminals.
• Be careful of the memory direction. There is a cutting part to adapt to the connector of
the slot.
Lock Levers
Reinstall Side Cover
(1) Reinstall the side cover.
(2) Fasten the cover with the one screw.
(3) Close the top cover and the front cover.
Front Cover
2
Screw
Top Cover
3
3
1
Side Cover
42615101TH Rev.553 /
Page 46
(2) Second Tray Installation
A second tray expands the printer’s paper holding capacity, and can hold 530 sheets of 70-kg
paper in it. A printer equipped with the tray can continuously print those 930 sheets of the
paper, using the paper cassette and MP tray that are standard on the printer.
Type: MLTRY-C4C1
Power Off Printer to Remove Power Supply Cord
Oki Data CONFIDENTIAL
Note!
Installing the second tray with the printer powered on may cause a problem with the
printer.
Place Printer on Second Tray Unit
Note!
Each printer weighs about 25 kg. Lift it by more than one person.
(1) Align the cuts on the bottom surface of the printer with the protrusions of the second tray
unit.
(2) Put the printer on the second tray unit carefully.
For removing the second tray, reverse the installation procedure.
OI
Cut on Bottom Surface of Printer
Protrusion
42615101TH Rev.554 /
Page 47
(3) Duplex-Unit Installation
A duplex unit is used for a printer to print both sides of paper.
Note!
Installing extension memory in printers is recommended for the printers to print both
sides of paper.
Type: MLDXU-C4C
Power Printer Off to Remove Power Supply Cord
Oki Data CONFIDENTIAL
Note!
nstalling the duplex unit with the printer powered on may cause a problem with the
printer.
OI
Remove Protective Tape from Duplex Unit
Install Duplex Unit
(1) Slide the duplex unit into the rear of the printer as far as the unit will go.
(2) Be sure the lock piece of the unit is completely engaged in the cut on the rear on each side.
Protective Tape (at two places)
Holes
Lock Pieces
Duplex Unit
42615101TH Rev.555 /
Page 48
(4) Internal Hard Disk (ES1624n)
It is an internal hard disk which is added to the printer. It is used when printing for validation,
authentication, saving of the print job or buffer printing are implemented or [COLLATE FAIL]
is shown in collation copy printing.
It is not available to download a font.
Note!
Turn off the power after Shut down menu is executed when an internal hard disk is
installed. The hard disk may be damaged and unusable if the printer is switched off
immediately.
Oki Data CONFIDENTIAL
Memo
The hard disk is divided into three partitions such as "PCL", "SHARING" and "PSE", and
each partition size is allocated as below.
PCL
SHARING
PSE
20%
50%
30%
Power Printer Off to Remove Power Supply Cord, the printer cable
Note!
nstalling the duplex unit with the printer powered on may cause a problem with the
printer.
OI
42615101TH Rev.556 /
Page 49
Open the top cover and the front cover
(1) Press OPEN button to open the top cover.
OPEN button
Handle
Oki Data CONFIDENTIAL
Top cover
Front cover
(2) Lift up the handle in the center of the front cover, and then, pull the front cover.
Front cover
Note!
It differs from how to open multi-purpose tray (See the following figure.)
Multi-purpose tray
42615101TH Rev.557 /
Page 50
Detach the side cover
(1) Slacken a screw.
(2) Detach the side cover.
Slide out lifting the top part of the side cover.
Front cover
1
Screw
Oki Data CONFIDENTIAL
Top cover
2
Side cover
Memo
Make sure the front cover is open when the side cover is not detached.
[The condition where the front cover is open][The condition where Multi-purpose tray is open]
Install an internal hard disk
(1) Pull a lock lever of the internal hard disk.
(2) Insert the cable of the internal hard disk into the connector on the control base.
(3) Sets the internal hard disk to fit the line displayed in "HDD".
(4) Fold the lock lever until you hear it click.
Front cover
Multi-purpose tray
Displayed "HDD"
Lock lever
Click
3
1
4
2
42615101TH Rev.558 /
Page 51
Attach the side cover
(1) Attach the side cover.
(2) IFix it with a screw.
(3) Close the top cover and the front cover.
Oki Data CONFIDENTIAL
Top cover
Front cover
3
3
2
Screw
1
Side cover
Connect the power code and printer cable to the printer and turn ON the printer
Print MenuMap and confirm that an internal hard disk is appropriately installed
(1) Print MenuMap.
Refer to “ Chapter 3.6 Menu Map Printing” to print MenuMap.
(2) Check the capacity of the internal hard disk is displayed in HDD.
Memo
Note!
In addition, a setting to recognize the internal hard disk in the printer driver is required.
Please refer to Chapter 3-9 if the printer driver is not set up, proceed after the printer driver is
installed.
42615101TH Rev.559 /
The capacity of the hard disk may differ from the example of the left figure.
Reinstall the internal hard disk when the capacity of HDD is not displayed.
Page 52
3.5.4 Checking of Optional-Component Recognition
Please refer to “3.6 Menu Map Printing” to print MenuMap to confirm that options are correctly
installed.
(1) Checking for Proper Extension Memory Recognition
Check Information Contained in MenuMap
Check the total memory size appearing at Total Memory Size on the header of MenuMap.
Oki Data CONFIDENTIAL
(2) Checking for Proper Second Tray Recognition
<Checking for Proper Second Tray Recognition>
Check Information Contained in MenuMap
Check Tray 2 is in the header part.
(3) Checking for Proper Duplex Unit Recognition
<Checking for Proper Duplex Unit Recognition>
Check Information Contained in MenuMap
Check [Duplex printing : installed] is in the header of MenuMap.
42615101TH Rev.560 /
Page 53
3.6 MenuMap Printing
Make sure that the printer operates normally.
For ES1624n
(1) Set A4 papers in a tray.
(2) Press the "MENU +" switch a couple times to show [Information menu].
(3) Press the "ENTER" switch to show [Menu map Printing/ EXECUTE].
(4) Press the "ENTER" switch.
Menu map printing is started (2pages for ES1624n,
Following it, Network Information is printed (4 pages.)
Oki Data CONFIDENTIAL
(Sample) In case of ES1624n
42615101TH Rev.561 /
Page 54
3.7 Connection Procedures
<USB Connection>
Prepare a USB Cable.
Oki Data CONFIDENTIAL
Note!
• No cables are included with the product. Prepare a cable.
• A cable to be prepared must be a USB cable.
• For connecting the printer in USB 2.0 Hi-Speed mode, use a Hi-Speed USB cable.
Power off Printer and Personal Computer
Memo
The USB cable can be plugged in and off with the printer powered on. For the purpose
of printer driver and USB driver installation to be performed later, power off the printer.
Connect Personal Computer and Printer
(1) Plug a prepared USB cable in the USB interface connector of the printer.
(2) Plug the cable in the USB interface connector of the personal computer.
Note!
Be careful not to plug the USB cable in the network interface connectors; a problem with
the printer may result.
USB Interface Connector
42615101TH Rev.564 /
Page 55
<LAN Cable Connection>
Prepare a LAN Cable and Power Off Printer and Personal Computer
Connect Personal Computer and Printer
(1) Remove the misplugging prevention cover fitted into the network interface connector of the
printer.
Misplugging Prevention Cover
Oki Data CONFIDENTIAL
(2) Plug the prepared Ethernet cable in the network interface connector of the printer.
(3) Plug the cable in the hub.
Network Interface Connector
<Parallel Connection>
Prepare a Parallel Port Cable and Power Off Printer and Personal Computer
Connect Personal Computer and Printer
(1) Plug the prepared parallel port cable in the parallel interface connector of the printer, and
secure the cable with the metal fitting.
(2) Plug the cable in the parallel interface connector of the computer, and secure the cable with
the screw.
Screw
Screw
Metal Fitting
42615101TH Rev.565 /
Page 56
3.8 Checking of User Paper
Load the paper in printers used by users, select the settings at MEIDA TYPE and MEDIA WEIGHT
and print MenuMap and Demo Page to check no occurrence of peeled off toner.
Oki Data CONFIDENTIAL
Setting values of the operation
WeightTypes
Media weight
2
Regular
3
paper*
Postcard*
4
Envelope*
Label paper
55-64kg (64-74g/m
65-89kg (75-104g/m
90-103kg (105-120g/m
104-172kg (121-200g/m
4
Less than 0.1-0.17mm
)
2
)
2
)
2
)
-
-
0.17-0.2mm
Transparency
5
film
*
*1
: [Light] is set as factory-default of media type.
*2
: Media weight and type can be set by the operation panel and the printer driver. The printer
-
Light
Medium
Heavy
Ultra heavy
Thicker paper
Thickest paper
panel
Media type *
1
Light
-
-
-
-
Label paper
-
Transparency
film
Setting *
[Media weight] of the
printer driver
Ultra heavy
Label paper 1
Label paper 2
Transparency
2
Light
Medium
Heavy
-
-
film
for
driver takes priority if it is set in the printer driver. Images are printed out by the setting of
the operation panel when [Auto selection] is set in [Feed tray] or [Printer setting] is set in
[Media weight].
*3
: The ream weight of the paper for duplex print is 55-90kg (64-105g/m2).
42615101TH Rev.566 /
Page 57
4.PARTS REPLACEMENT
This section describes the procedure for replacing the parts, assemblies and units in the field. The
replacing procedure is given for detachment. To attach, use the reverse procedure.
The Parts No. (1, 2, etc.) appearing in this manual vary from the numbers appearing in the
diagram numbering of the Disassembly for Maintenance Configuration (********TL) and RSPL
(********TR).
4.1Precautions in Replacing Parts
(1) Before replacing the parts, be sure to remove the AC cord and the interface cable.
(a) To remove the AC cord, always use the following procedure.
i)Flip the power switch of the printer off (to “O”).
ii) Pull the AC inlet plug of the AC cord out of the AC plug.
iii) Remove the AC cord and the interface cable from the printer.
(b) To connect the printer again, always use the following procedure.
Oki Data CONFIDENTIAL
Disconnect
(2) Do not disassemble the printer so long as it operates properly.
(3) Minimize the disassembly. Do not detach parts other than those shown in the replacing procedure.
(4) For maintenance, use designated tools.
i)Connect the AC cord and the interface cable to the printer.
ii) Insert the AC inlet plug into the AC plug.
iii) Flip the power switch of the printer on (to “I”).
Connect
(5) Follow the order instructed to disassemble the printer. Incorrect order may damage the parts.
(6) Small parts such as screws and collars tend to get lost, so temporarily place and fix them in
their original positions.
(7) When handling ICs and circuit boards such as microprocessors, ROMs and RAMs, do not use
gloves that likely to have static.
(8) Do not place the printed circuit boards directly on the printer or the floor.
42615101TH Rev.567 /
Page 58
Oki Data CONFIDENTIAL
[Maintenance Tools]
Table 4-1-1 lists tools necessary to replace the printed circuit boards and the units.
Table 4-1-1 Maintenance Tools
No.Q' tyPlace of useRemarksService Tools
1
2
3
4
5
6
7
8
No. 2-200 Philips
screwdriver, Magnetized
No. 3-100 screwdriver
No. 5-200 screwdriver
Digital multimeter
Pliers
Handy cleaner
LED Head cleaner
P/N 4PB4083-2248P001
E-ring pliers
1
3~5 mm screws
1
1
1
1
1
1
Cleans LED head
1
Required tools for the maintenance utility are shown in Table 4-1-2.
Table 4-1-2 Maintenance Tools
No.Q' tyPlace of useRemarksService Tools
1Laptop computer1
2USB cable1
42615101TH Rev.568 /
Page 59
4.2Part Replacement Procedures
This section describes the procedures for replacing the parts and assemblies shown in the
following disassembly chart:
4.2.1Left Side Cover
(1) Open the top cover 1.
(2) Open the feeder unit 2.
(3) Remove the screw (golden) 3 to detach the left side cover 4.(Tool No.1)
Oki Data CONFIDENTIAL
1
3
2
4
Figure 4-2-1 Left Side Cover
42615101TH Rev.569 /
Page 60
2
4.2.2Right Side Cover
(1) Open the top cover 1.
(2) Open the feeder unit 2.
(3) Loosen the screw 3 to detach the right side cover 4.(Tool No.1)
1
3
Oki Data CONFIDENTIAL
(loosen)
4
Figure 4-2-2 Right Side Cover
42615101TH Rev.570 /
Page 61
4.2.3Face-Up Tray
(1) Open the face-up tray 1 in the direction of the arrow, and disengage it at its two places to
detach it with bowing down.
Oki Data CONFIDENTIAL
Figure 4-2-3 Face-Up Tray
1
42615101TH Rev.571 /
Page 62
4.2.4Rear Cover
(1) Slide out the face-up tray.
(2) Remove the two screws (golden) 1.(Tool No.1)
(3)As shown in Fig.2, insert a flat- blade driver (Tool No.3) into the hole A to disengage the claw A,
at each of the two places.
(4)Disengage the two claws B and pull in an arc the rear cover 2 in the direction of the allow A.
(5) As shown in Fig.3, push the lower part of the rear cover 2 in the direction of the allow B to
disengage the three claws C, then detach the rear-cover.
Oki Data CONFIDENTIAL
Fig.1
Claw B
Claw A
1
A
Claws A
2
1
A
Hole A
Fig.2
Claws B
Claws C
Claw A
2
Hole A
B
Claws C
42615101TH Rev.572 /
Fig.3
Figure 4-2-4 Rear Cover
Page 63
4.2.5LED Assy / LED Assy-Springs
(1) Open the top cover 1.
(2) As shown in Fig.2, push in the direction of the allow after removing a cable. Then, disengage
the hook A first and the hook B to detach LED Assy 2 (the two springs 3 become detached
together with the LED Assy 2).
Oki Data CONFIDENTIAL
Hook A
1
3
Fig.1
Hook A
2
Fig.2
Hook B
Figure 4-2-5 LED Assy / LED Assy-Springs
42615101TH Rev.573 /
Page 64
4.2.6Controller PCB
ES1624n
(1) Remove the Print Engine Controller PCB (see section 4.2.7).
(4) Remove the screw 1 and then the head cable 2.(Tool No.1)
(5) Remove the eight screws (golden) 3, then detach the controller PCB 4(SPA-4 PCB).
(Tool No.1)
Oki Data CONFIDENTIAL
1
4
×
8
3
K
Y
M
C
2
2
Figure 4-2-6-1 Controller PCB (ES1624n)
42615101TH Rev.574 /
Page 65
4.2.7Print Engine Controller PCB
ES1624n
(1) Open the top cover.
(2) Remove the right side cover (see section 4.2.2).
(3) Remove the connector 1, and disengage the two hooks A of to detach the FAN (CU) 2.
(4) Remove the three screws (golden) 3 disengage the claws B and remove
the plate-shield Assy (PCL) 4.(Tool No.1)
(5) Remove the three screws (golden) 5 and all the connectors to detach
(2) Rise the Fuser-Unit-Lock-Levers (two blue portions) 2 in the directions of the arrows to detach
the fuser unit 3.
1
3
2
(Blue)
Figure 4-2-21 Fuser Unit
42615101TH Rev.594 /
Page 83
Oki Data CONFIDENTIAL
4.2.22 Belt Unit
(1) Open the top cover 1.
(2) Remove the image drum unit.
(3) Turn the lock levers (two blue portions) 2 in the direction of the arrow ( ) and, grasping the
lever (blue) 3, detach the belt unit 4.
2
1
3
(Blue)
5
4
3
(Blue)
Figure 4-2-22 Belt unit
42615101TH Rev.595 /
Page 84
4.3Parts to lubricate
This section shows parts to lubricate. It means that lubricating to parts other than mentioned is
prohibited.
It is not necessary to lubricate in removing or installing. However, specified lubrication oil has to
be used to lubricate if oil is wiped off.
Apply a normal amount of Molycoat(EM-30L)
to the hatched portions
EM-30L Class C
3 42050101 Guide-Assy.-Cassette-R
Apply a normal amount of Molycoat(EM-30L)
Guide-Casette-R
to the hatched portions
EM-30L Class C
42615101TH Rev.598 /
Page 87
4 42057301 Gear-Assy.-HP
Holder-Gear-A
Oki Data CONFIDENTIAL
Apply a normal amount of Molycoat(EM-30L)
to the hatched areas
EM-30L Class C
5-1 42053501 Plate-Ass.-Side-R
Apply a normal amount of Molycoat(EM-30L) to the hatched areas
EM-30L Class C
Bracket-Inner(Caulking)
42615101TH Rev.599 /
Page 88
5-2 42053501 Plate-Ass.-Side-R
Oki Data CONFIDENTIAL
Gear-Idle-Drum-M
Gear-Idle-Drum-K
Gear-Idle-Drum-YC
Gear-Idle-Drum-Liftup
Apply a normal amount
of Molycoat(EM-30L)
to the hatched areas
EM-30L Class C
Apply a normal amount
of Molycoat(EM-30L)
to the hatched areas
EM-30L Class C
Enlarged figure
Link-Liftup-R
Apply a small amount of Molycoat(EM-30L) to the hatched areas
EM-30L Class A
Apply a small amount of Molycoat(EM-30L)
to the hatched areas
EM-30L Class A
(5)(15)
Apply a small amount of Molycoat(EM-30L) to the hatched areas
EM-30L Class A
42615101TH Rev.5100 /
Page 89
6 42060001 Plate-Ass.-Side-L
Apply a small amount of Molycoat(EM-30L) to the hatched areas
EM-30L Class A
Link-Liftup-L
(15)(5)
Oki Data CONFIDENTIAL
Apply a small amount of Molycoat(EM-30L)
to the hatched areas
EM-30L Class A
Gear-Planet
7 42071401 Holder Assy.-Regist-L
Apply a small amount of Molycoat(EM-30L)
to the hatched areas
EM-30L Class A
Apply a normal amount of Molycoat(EM-30L)
to the hatched areas
EM-30L Class C
Holder-Regist-L
Apply a normal amount of Molycoat(EM-30L)
to the hatched areas
EM-30L Class C
42615101TH Rev.5101 /
Page 90
8 42071901 Holder Assy.-Regist-R
Oki Data CONFIDENTIAL
Holder-Regist-R
Apply a normal amount of Molycoat(EM-30L)
to the hatched areas
EM-30L Class C
9 42087001 Cassette-Assy
The standard amount of Molycoat(EM-30L) should be applied to
the shaded portions shown in the figure below before assembly.
Frame-Separation-Assy
Fulcrum of rotation and side Class C
The application of grease protruding over
on the paper carriage surface is not permitted
42615101TH Rev.5102 /
Page 91
0 42064301 Guide-Assy.-Eject-U
Apply a normal amount of Molycoat(EM-30L) to the surface of gear teeth, shaft,
and the flange portions.(8 places) No Molycoat at the paper running face.
Shaft-Assy.-Eject(FD)
Oki Data CONFIDENTIAL
EM-30L Class C
Guide-Eject-Upper
Shaft-Assy.-Eject(FU)
Apply a normal amount of Molycoat(EM-30L)
to the surface of post.
EM-30L Class C
Grease is not applied to this hatching portion.
Detail XDetail Y
Apply a small amount of Molycoat(EM-30L)
to the surface of shaft.(6 places)
No Molycoat at the paper running face.
Portion YPortion X
EM-30L Class A
42615101TH Rev.5103 /
Page 92
A 42621601 Guide-Assy.-Eject-L
Post-G.B.L.-Z33
Apply a normal amount of Molycoat(EM-30L)
to the hatched areas
EM-30L Class C
Oki Data CONFIDENTIAL
B 42464901 Frame-Assy.-Base
Apply PM to the hatched portion in a small quantity.
(1) The application mathod : wipe with the cloth with which PM sank in a small quantity.
(2) After applying PM, check that there is no creaking noise when taking out and inserting a cassette several times.
PM Class C
Cassette-Assy.
42615101TH Rev.5104 /
Page 93
C-1 42621701 Printer-Unit-ES1624n
Apply a normal amount of Molycoat(EM-30L)(4 portions)
EM-30L Class C
Oki Data CONFIDENTIAL
Plate-Ass.-Side-L
Apply areas to grease(4 points)
Gear-Idle-Belt
Apply a normal amount of Molycoat(EM-30L)
EM-30L Class C
Plate-Driver-PU(Caulking)
Apply a normal amount of Molycoat(EM-30L)
EM-30L Class C
Apply a normal amount of Molycoat(EM-30L)
EM-30L Class C
42615101TH Rev.5105 /
Page 94
C-2 42621701 Printer-Unit-ES1624n
Apply a normal amount of Molycoat(EM-30L) to the hatched areas
Oki Data CONFIDENTIAL
EM-30L Class C
Plate-Ass.-Side-R
PM is applied to the portion of the slot of solid coiling of this
torsion-spring using a bros
(2 places)(At both Sides)
Spring-Torsion-L
Spring-Torsion-R
42615101TH Rev.5106 /
Page 95
C-3 42621701 Printer-Unit-ES1624n
Oki Data CONFIDENTIAL
Grease is not applied to a metal shaft.
Apply a normal amount of Molycoat(EM-30L)
EM-30L Class C
Gear-Idle-Heat
42615101TH Rev.5107 /
Page 96
D 42626501 Sensor-Assy-Color-Regist
Oki Data CONFIDENTIAL
Plate-Sensor-C.Regist
Shaft-Cover-Sensor
Apply a small amount of Molycoat(ME-30L) to the hatching areas(4 places)
EM-30L Class A
Molycoat shall not adhere to the surface of Cover-Sensor-C.Regist
Cover-Sensor-C.Regist
42615101TH Rev.5108 /
Page 97
E 42076601 Roller-Assy.-Idle(FD)
Oki Data CONFIDENTIAL
1
2
Exploded View
Method of amount of grease
Before 1 assemble at 2, apply small amount of Molycoat(EM-30L) to the sliding
portions(hatching portion) of 1 and 2.(Class S)
Not allowed to stain the area with grease.
42615101TH Rev.5109 /
Page 98
F 42077801 Roller-Assy.-BIAS(FU)L
Oki Data CONFIDENTIAL
No.01
Left-Side
3
1
Method of amount of grease
2
No.02
2
Reft-Side
1
No.01No.02No.03
No.03
Center-Side
3
5
1
4
Not allowed to stain the area with grease.Not allowed to stain the area with grease.
After 2 or 4 assemble at 3 or 5, apply small amount of Molycoat(EM-30L) to the sliding
portions(hatching portion) of 2 and 4.(Class S)
42615101TH Rev.5110 /
Page 99
5.MAINTENANCE MENU
Adjustments of ES1624n printers can be made using maintenance utility
software and key input from their operator panels. In addition to a standard menu, there is a
maintenance menu in the display of their operator panels. The menu that serves the purpose of
intended adjustment is to be selected.
5.1System Maintenance Menu(For Maintenance Staff)
Turning on printer power while holding the MENU+ and MENU- keys down activates System
Maintenance menu. The menu is only displayed in English on a printer to any destination.
Oki Data CONFIDENTIAL
Note!
Category
OKIUSER
MAINTENANCE
MENU
CONFIG MENU
System Maintenance menu, from which settings such as printer destinations can be
changed, is hidden from user’s view.
Table 5-1 Maintenance Menu Display Table
Item(1st Line)
OKIUSER
HDD FORMAT
FLASH FORMAT
MENU RESET
CODESET
Value(2nd Line)
ODA
OEL
APS
JP1
JPOEM1
OEMA
OEML
EXECUTE
EXECUTE
EXECUTE
TYPE1
TYPE2
DF
Sets Brand and Destination.
JPOEM1: Japan OEM
OEMA: Overseas OEM for A4 default
OEML: Overseas OEM for Letter
default
Boots up automatically when a brand
is selected.
Format for HDD.
Process as same as connecting for
new HDD.
Format for Resident FLASH.
NIC Program is elased.
Sets factory default for EEPROM of
CU board.
This menu is displayed in
*
distribution channel.
*
TYPE1: Russian/Greek do not appear.
TYPE2: Russian/Greek appear.
When you select TYPE2, LANGUAGE
selections in SYS CONFIG MENU in
USER MENU display RUSSIAN and
GREEK. (
enabled after rebooting.)
TYPE2 is the default for OEL/APS/
OEMA; TYPE1 is the default for the
other distribution channel.
Function
every
The value change is
ENG STATUS
PRINT
TEST PRINT MENU
(ES1624n)
PAGE CNT PRINT
42615101TH Rev.5111 /
ENG STATUS
PRINT
TEST PRINT MENU
PAGE CNT PRINT
EXECUTE
ENABLE
DISABLE
ENABLE
DISABLE
Selecting by the ENTER key, then
pressing the On-line switch will
prompt initialization and printing
Engine information.
Switches ENABLE and DISABLE to
*
display the TEST PRINT MENU
category in the User Menu.
Sets printing or not printing the total
*
page count in PRINT MENU MAP.
Page 100
FUSE KEEP MODE
FUSE KEEP MODE
EXECUTE
Oki Data CONFIDENTIAL
FunctionItem(1st Line)Value(2nd Line) DFCategory
By pressing the ENTER key, a
command is issued from CU to PU and
the device becomes ON LINE. This
mode is used when confirmation of
operation is needed using new
consumables as the factory default at
the users.(When comparing to the old
products etc.)
The fuse of the new consumables is
not cut if this mode is used, and also
operation count is not added to values
of the old one. This mode should be
finished in power-off and make sure to
turn off the power after working in
FUSE KEEP MODE since it will be
invalid in next power-on.
PERSONALITY
(ES1624n)
PCL
IBM PPR III XL
EPSON FX
PS3 EMULATION
(PX725)
ESC/ P
HP-GL/2
PCL XL
ENABLE
DISABLE
ENABLE
DISABLE
ENABLE
DISABLE
ENABLE
DISABLE
ENABLE
DISABLE
ENABLE
DISABLE
ENABLE
DISABLE
Changes the default PDL language for
*
each brand. PDLs that are disabled in
this menu will not be displayed on User
*E
Menu’s or Admin Menu’s
*J
PERSONALITY.
*E
When print data in the PDL language
*J
set to DISABLE is received, the printer
will display INVALID DATA and discard
*
received data.
PX725: Cannot disable PS3
(PostScript). Same as PX711/
*
713.(Only menu is implemented for
future expansion.)
When PCL is set to DISABLE, the data
*JE
of HP-GL/2 or PCL XL will not be
*JE
printed even though it is set to
ENABLE. The data is processed as
invalid.
Setting ENABLE to IBM PPR III XL or
EPSON FX in Japanese brands will
not assure the normal operation.
Setting ENABLE to ESPC/ P in
overseas brands will not assure the
normal operation.
42615101TH Rev.5112 /
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