toshiba estudio450

[etsmultan]

toshiba estudio450 shows white page i hv reset the copier,change tc board,crona,drum crona and check drum charge,chec copier own print but it also gvs white,can any body guide me?

[ToshibaTech]

First thing first: Is it on copies or prints or both? If only copies CCD/SLG/Scanner Assy.

Other wise: Is the Developer turning, and how about the Transfer/Seperation?

[Mr Spock]

Check the gears on the rear of the dev unit. I have several that break one or more of these every 50k. Replaced the dev unit and still breaks them.

[ivovb]

Check the gears on the rear of the dev unit. I have several that break one or more of these every 50k. Replaced the dev unit and still breaks them.

This is the weakest point in this model. But 50k sounds really anxiously for new dev unit with new developer. Concerning this problem for me it is very critical two things - doctor-sleev gap (it must be not so narrow because driving getting hard and gears wears out and too wide because OD would be damaged) and gear in the machine side (must be clean and free of developer particles). Also dev bias must be as should in order developer not to scatter. I am sure You have checked these things but it is worthy to say again.

BR

[emujo]

are you getting even the faintest image at all, or polar bear in snowstorm type of copy? Faint image would lead me in the developer direction, or transfer corona (no main charge should result in black copies). Laser unit failure would result in blank copy (write to black), but in most cases you would expect some sort of CA code. Have you looked for a latent image on the drum? Also, if you follow the leads that route X-fer and Sep power to the X-fer/sep assy, there is a electrode block (mounted on door under T/S assy) that arced out and caused this symptom. Pt# is 6LE76403000. Blank copies and no codes. Emujo

[jamesyboy]

check dev bias connector located in machine frame under dev unit these machines suffer with dev drive clutch failure

[etsmultan]

machine is giving blank white from its own counter and copy.i dnt understand what to do.guide me ihv replaced drum and developing unit but print still remains white

[emujo]

Have you looked at the other items posted? What did you find. Emujo

[ToshibaTech]

Is the developer unit turning? Take your finger and wipe the mag roller off and shove it in, let the machine go through a copy cycle and see if your mark is still there. If your mark is still there after making a copy then it's not turning and there is a problem with the drive. Blank copy would also be caused by a problem with the laser, usually I'd expect a CAxx code but you might just have some obstruction in the beam path. Could also be caused by no transfer, stop a LD size sky shot halfway (open front cover during copy process) and see if there is an image on the drum. Check the developer drive first.

[etsmultan]

there is no image on drum unit when i stopped a copy!

[ToshibaTech]

Is the developer unit turning??????

[emujo]

Sounds like etiher a Laser unit PWB or the LGC bd is the culprit. Emujo

[scepter2112]

Is the developer unit turning??????

I have many times had to replace Developer drive gear, frame side of copier, for this problem. Have also had my guys miss problem, shaft side of gear gets rounded out.

[jamesyboy]

try making a copy print with the main charge hvt lead dissconnected do you get a black copy

[jamesyboy]

hdd format is always worth a shot also a get out of jail 08 - 690

and for the brave !!!!soft ram clear 08 -664 and the very brave

full ram clear 08 - 665 ( you will have to do a dev set up after and check cassette sizes etc

must be in factory mode 08 203 change value ( dont forget to change it back otherwise youre total counter wont work