Canon IR7200

[mramlawi]

Dear all

iam facing a big problem on this series of machines IR8070,8500..

from the beginning first 50 k the copy quality is perfect then it starts to get lighter from side to side ,then if i turn the machine off for an hour it works also about 50k maybe more some times ,and again the same problem occur ,i changed cylander ,transfer corona ,primary and still faceing this problem ,question what makes the machine get lighter ? is this thing related to HV or sth like this please i need a help .


thanks friends

[Rachid.Akli]

Re: Canon IR7200

Hello Ramlawi,

Please send a test and the Vdm - VLm values for the two cases ( when CQ is ok and when it's not) if possible.

Rachid

[teckat]

Re: Canon IR7200

Dear all

iam facing a big problem on this series of machines IR8070,8500..

from the beginning first 50 k the copy quality is perfect then it starts to get lighter from side to side ,then if i turn the machine off for an hour it works also about 50k maybe more some times ,and again the same problem occur ,i changed cylander ,transfer corona ,primary and still faceing this problem ,question what makes the machine get lighter ? is this thing related to HV or sth like this please i need a help .


thanks friends

what is your enviorment for these models/ ?? Prints & Copies have same issue ??

change transfer/separation output from each paper feed location
copier>option>body TR-SP

[mramlawi]

Re: Canon IR7200

what is your enviorment for these models/ ?? Prints & Copies have same issue ??

change transfer/separation output from each paper feed location
copier>option>body TR-SP

Dear Teckat

this problem occer on copies ,also on print ,i never use Tr-SP before what is it ?

thanks

[teckat]

Re: Canon IR7200

Dear Teckat

this problem occer on copies ,also on print ,i never use Tr-SP before what is it ?

thanks

TR-SP-C1
Use it to change the transfer/separation output setting for pickup from the right deck (to deal with various problems).
Setting 0: for plain paper (default)
1: for re-cycled paper
2: for tracing paper
TR-SP-C2
Use it to change the transfer/separation output setting for pickup from the left deck (to deal with various problems).
Setting 0: for plain paper (default)
1: for re-cycled paper
2: for tracing paper
TR-SP-C3
Use it to change the transfer/separation output setting for pickup from cassette 3.
Setting 0: for plan paper (default)
1: for re-cycled paper
2: for tracing paper
TR-SP-C4
Use it to change the transfer/separation output setting for pickup from cassette 4 (to deal with various problems).
Setting 0: for plain paper (default)
1: for re-cycled paper
2: for tracing paper
TR-SP-MF
Use it to change the transfer/separation output setting or pickup from the manual feed tray (to deal with various problems).
Setting 0: For plain paper (default)
1: re-cycled paper
2: tracing paper
TR-SP-DK
Use it to change the transfer/separation output setting for pickup from the side paper deck (to deal with various problems).
Setting 0: for plain paper (default)
1: for re-cycled paper
2: for tracing paper


Checking the Surface Potential Control System

If an image fault occurs, it is important to find out if the cause is in the latent image formation block (including the photosensitive drum and the potential control system) or in the development/transfer system, requiring a check to see if the surface potential is appropriate.
The service potential may be checked in service mode.
Disabling Auto Control1. ProcedureWhen non-auto control mode is selected, all settings for corona current control, intensity control, and developing bias control will automatically be set to standard settings stored in ROM.
2. Making Use of Non-Auto Control Mode
Use it to find out if the cause is on the input side or on the output side of the microprocessor on the DC controller PCB when an image fault occurs.
If any improvement is noted in non-auto control mode, a fault may be suspected in the potential measurement unit or the DC controller PCB.


-Is the transfer/separation charging assembly securely fitted?

COPIER>OPTION>BODY>FUZZY. Is the problem corrected?

FUZZYSetting 0: Fuzzy control (default)
1: low humidity environment mode (current level will be lower than standard)
2: normal humidity environment mode
3: high humidity environment mode (current level will be higher than standard)

[mramlawi]

Re: Canon IR7200

TR-SP-C1
Use it to change the transfer/separation output setting for pickup from the right deck (to deal with various problems).
Setting 0: for plain paper (default)
1: for re-cycled paper
2: for tracing paper
TR-SP-C2
Use it to change the transfer/separation output setting for pickup from the left deck (to deal with various problems).
Setting 0: for plain paper (default)
1: for re-cycled paper
2: for tracing paper
TR-SP-C3
Use it to change the transfer/separation output setting for pickup from cassette 3.
Setting 0: for plan paper (default)
1: for re-cycled paper
2: for tracing paper
TR-SP-C4
Use it to change the transfer/separation output setting for pickup from cassette 4 (to deal with various problems).
Setting 0: for plain paper (default)
1: for re-cycled paper
2: for tracing paper
TR-SP-MF
Use it to change the transfer/separation output setting or pickup from the manual feed tray (to deal with various problems).
Setting 0: For plain paper (default)
1: re-cycled paper
2: tracing paper
TR-SP-DK
Use it to change the transfer/separation output setting for pickup from the side paper deck (to deal with various problems).
Setting 0: for plain paper (default)
1: for re-cycled paper
2: for tracing paper


Checking the Surface Potential Control System

If an image fault occurs, it is important to find out if the cause is in the latent image formation block (including the photosensitive drum and the potential control system) or in the development/transfer system, requiring a check to see if the surface potential is appropriate.
The service potential may be checked in service mode.
Disabling Auto Control1. ProcedureWhen non-auto control mode is selected, all settings for corona current control, intensity control, and developing bias control will automatically be set to standard settings stored in ROM.
2. Making Use of Non-Auto Control Mode
Use it to find out if the cause is on the input side or on the output side of the microprocessor on the DC controller PCB when an image fault occurs.
If any improvement is noted in non-auto control mode, a fault may be suspected in the potential measurement unit or the DC controller PCB.


-Is the transfer/separation charging assembly securely fitted?

COPIER>OPTION>BODY>FUZZY. Is the problem corrected?

FUZZYSetting 0: Fuzzy control (default)
1: low humidity environment mode (current level will be lower than standard)
2: normal humidity environment mode
3: high humidity environment mode (current level will be higher than standard)

thanks alot for the informations