Konica 7033 - no image

[mdm7266]

intermittent light copies

bros, i have a konica 7033, my problem is that: at the start of the copying, the first copy is clear, but as at multiple copies, the image become light. so i got light copies problem.
i have read your post about the front door interlock switch to replace the switch that might cause light copies.

i tried to isolate the problem by shorting the orange wires-front door interlock and the shorting the red wires just to know if the problem will be solve, but the problem still exist. intermittent light copies as you run.

for your information i'm a former service engineer of Fuji Xerox machines for 15 years. i resigned and put up my own business center.

i solved my trouble problems on konica 7050 machine.
i solved F54-1 on 7033. my problem isthe light image as you are copying.

could somebody advise me of what other probable causes of the problem?
please help..

[Luther]

Replace the charge corona assembly, if you dont have one restring the wires themselves, hope this helps

[pepper38_cnd]

I agree just change the interlock switch.... But if you are certain its not the switch then change the T/S carona, are you getting any codes? Check management list, they may be recorded and not displayed, codes would really help.

[mdm7266]

light image

I agree just change the interlock switch.... But if you are certain its not the switch then change the T/S carona, are you getting any codes? Check management list, they may be recorded and not displayed, codes would really help.

i'm not getting any codes. i'll just first try to replaced the wires. i think my wires will also work for konica machine. (my wires are for fuji xerox machines).
i'll inform you as soon as my problem is solved.

[mdm7266]

konica 7033 no image

if you have not solve the problem yet, you may check for developer clutch. it might be slipping.

[doma873]

all that front door switch is going to do is turn the fuser off or on. nothing to do with light or dark copies.

if so.

please explain. been working on 7033's for 5 years and never had a front door switch cause any issues.

Geezzzz

When i was working on 7033 -40's this was most common problem. The current running through the swich is to high. When you clean or replace the switch bend the housing plate foward and maybe put some packing behing the switcg so it dosen't move back. Its the arking thats causing the contacts to get dirty. The more presure on the contacts will cause less arking meaning longer switch life.

There is another problem that can cause bery bad copy quality and the is the ozone filter behing the fuser. If no one ever cleans or replaces it at PM intervals it clogs up and heats up the image processor board causing very stange output.

Apart from that there were my fav machine to work on.