OKI C3520 MFP User Manual

							
Troubleshooting > 111
13.If you are not using the rear stacker, close it once paper 
has been removed from this area.
14. Press the front cover release and pull open the front 
cover.
15. Check inside the cover for sheets in this area and remove 
any that you find, then close the cover.
16. Pull out the Cassette Tray and ensure that all paper is 
stacked properly, is undamaged, and that the paper 
guides are properly positioned against the edges of the 
paper stack. When satisfied, replace the tray.
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Troubleshooting > 112
17.Close the front cover.
18. Close the printer top cover and press down firmly so that 
the cover latches closed.
19. Gently  lower the scanner on to its supports.
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Troubleshooting > 113
FAX PROBLEMS (C3530MFP)
The machine will not dial a telephone number:
Check the power cable and wall outlet. Make sure that the 
telephone line (not external telephone or handset) is connected 
to the LINE socket on the back of the machine. If an external 
telephone is installed, lift the handset and check for a dial tone. 
If there is no dial tone, there may be a problem with the 
telephone line. If there is a dial tone, the machine may be using 
the wrong dialling method (pulse or tone) for the region.
The display shows a communications error :
This alarm indicates any of a number of problems. The machine 
may be incompatible with the remote machine, or the remote 
machine may not be able to perform the function requested of it 
such as polling or confidential faxing. The remote machine may 
also be out of paper or experiencing a paper jam. Bad telephone 
line conditions can also cause communication errors. Try sending 
the fax again and check to make sure that the correct telephone 
number is being dialled. If a prefix number must be dialled to get 
an outside line, or if the call is  to an international destination, a 
pause may need to be entere d after the dial prefix or 
international dialling code to tell the machine to wait for a dial 
tone. If there are frequent problems communicating with a 
particular remote machine, try programming the telephone 
number into a One-Touch key, and then change the One-Touch 
parameters for that key. Lastly, either the local or remote 
machine may require servicing. Try sending a fax to another 
location to check the local machine.
Faxing is possible but the image of the document printed 
by the remote machine is very poor :
If the faxed document has small type, complex illustrations, 
photos, or is very light or very dark, try changing the resolution. 
Copy the document on the machine to determine how it will 
transmit. The problem may be caused by telephone line 
interference. Try sending the document again later.
Unwanted reports are printed out :
Check the user function settings and turn off undesired reports.
Fax sent but received mess age was completely blank:
Make sure that the document is  loaded face down before faxing.
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Troubleshooting > 114
Image of received fax is very poor:
Contact the person sending the fax and ask them to change their 
Transmit resolution. Ask the person to make a copy of the 
document on their machine to ensu re that it is working properly. 
Then ask them to send the fax again. If there is still a problem, 
try making a copy of a document on the local machine to make 
sure it is working properly.
Dialling was tried with a Sp eed Dial number but nothing 
happened :
Make sure that the Speed Dial number being used is programmed 
correctly. When dialling a two or three digit number, be sure to 
press Speed Dial before entering the number.
Documents received ar e light or have vertical streaks on 
them, and machine is not out of toner :
Lift the top cover and gently wipe the lens surface of the 
machines LED array. Then check to see if the toner or image 
drum need replacing (see  “Replacing consumable items” on 
page 81 ).
Machine is set for delayed transmission but it did not send :
Check the display to make sure that the machine’s clock is set to 
the correct time (see Clock Adjustment).
Machine will not poll a remote machine :
Call the person at the remote ma chine and make sure that they 
have loaded documents and that  their machine is set to polling 
transmission mode.
Machine is connected to a PBX but it is not possible to dial 
out :
Be certain that the dial prefix  is entered before the telephone 
number for each number dialled or programmed into the 
machine. Additionally, the machine must be programmed for PBX 
operation before it will work with a PBX (see Connecting to a 
PBX).
Machine always answers before it’s possible to use the 
external telephone:
If an external telephone is connected, increase the machine’s 
ring response setting.
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Troubleshooting > 115
Faxes received sometimes look distorted:
If the document received is wider or longer than the paper loaded 
in the paper tray, the machine automatically reduces the width 
or length of the document so that it will fit on the paper. This type 
of problem could also be communication related.
The display shows a invalid toner cartridge :
A toner cartridge that is not specified for use in this machine has 
been installed. Contact the nearest supplier for service.
T he display shows a invalid image drum :
An image drum that is not specified for use in this machine has 
been installed. Contact the nearest supplier for service.
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Installing additional memory > 116
INSTALLING ADDITIONAL MEMORY
This section explains how to install additional RAM memory into 
your MFP as a memory upgrade.
MEMORY UPGRADE
The basic MFP model comes equipped with 128MB of memory 
(64 Mb “on-board” and 64 Mb in the option slot). This can be 
upgraded by substituting the option memory (64Mb) with a 
memory board containing 256MB, giving a maximum total 
memory capacity of 320MB.
1.Switch the MFP off and disconnect the AC power cable.
2. Lift the scanner.

						

							Installing additional memory > 117
3.Press the cover release and open the printer’s top cover 
fully.
4.Remove each image drum units, starting with the front. 
Cover the image drum units to protect them from direct 
light 
WARNING!
If the MFP has been powered on, the fuser may be hot. 
This area is clearly labelled. Do not touch this area.
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							Installing additional memory > 118
5.Locate the two fasteners (1) at each side of the belt (3) 
and the lifting bar (2) at the front end. Turn the two 
fasteners (1) 90° to the left. This will release the belt from 
the printer chassis.
CAUTION!
The green image drum surface at the base of each 
cartridge is very delicate and light sensitive. Do not 
touch it and do not expose it to normal room light for 
more than 5 minutes. If the drum unit needs to be out 
of the MFP for longer than this, please wrap the 
cartridge inside a black plastic bag to keep it away 
from light. Never expose the drum to direct sunlight 
or very bright room lighting.
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							Installing additional memory > 119
6.Unlock the fasteners and remove the belt as shown.
7.Carefully remove the new memory board from its 
wrapping. Try to handle the board only by its short edges, 
avoiding contact with any metal parts as far as possible. 
In particular, avoid touching the edge connector.
8.Note that the memory board has a small cutout in the 
edge connector, which is closer to one end than the other.
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							Installing additional memory > 120
9.Identify the RAM expansion slot  in the printer. Unclip the 
plastic cover to open this slot.
10.As the RAM expansion slot already contains a memory 
board (64Mb), this board will have to be removed before 
you can install the new one. To remove it proceed as 
follows:
(a)Identify the locking clips at each end of the RAM 
expansion slot.
(b)Push the clips outward and back into the printer. The 
board will pop out slightly.
(c)Grip the board firmly by its short edges and pull it 
out of the slot.
(d)Place the removed memory board in the antistatic 
bag which originally contained the new memory 
board.
11.Hold the new memory board by its short edges, so that 
the edge connector faces in towards the RAM expansion 
slot, and the small cutout is closer to the bottom of the 
printer.
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