Laser synchronization detector board defective ON RICOH 450E

322 C 1st laser synchronization error
• The 1st laser synchronization signal
cannot be detected by the main scan
synchronization detector board even
if the laser diodes are activated.
• Poor cable connection between the
laser synchronization detector board
and the LD unit.
• Laser synchronization detector board
out of position and angle of reflection
not correct
• Laser synchronization detector board
defective
• LD unit defective

lazer problem Sorry there is nothing u can do yourself ull need a service engineer to look at it

326 C 2nd laser synchronization error
The 2nd laser synchronization signal
cannot be detected by the main scan
synchronization detector board even if
the laser diodes are activated.
• Poor connection between the laser
synchronization detector board and
the LD unit.
• Laser synchronization detector board
out of position
• Laser synchronization detector board
defective
• LD unit defective

My guess is that polygon mirror failed £50 -£60 if u brave enough to change it yourself
if not its lazer or sync board

Laser synchronization error

Symptom:
The main scan synchronization detector
board cannot detect the laser
synchronization signal for more than 10
consecutive 50 ms intervals.

Possible Cause:
• Poor connection between the laser
synchronization detector board and
the SBCU board
• Laser synchronization detector board
out of position
• Laser synchronization detector board
defective
• SBCU board defective
• LD unit defective

Laser Synchronization Error(1 & 2)(sc322 & sc326)

· Laser synchronization detector board out of position
· Laser synchronization detector board defective
Also check if any cables are loose and also if the laser unit is dirty.-Clean it.

Error Code SC322:
1st laser synchronization error

The 1st laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated.

Possible Causes:
+ Poor I/F harness connection between the laser synchronization detector board and the LD unit.
+ Laser synchronization detector board out of position and angle of reflection not correct
+ Laser synchronization detector board defective LD unit defective

Not sure what your expertise is on this, but unless you know how to service the machine yourself, this one is going to require a service call...

There have been instances where toner drops onto the LD Unit and creates problems like this. About a month ago I replaced the Laser Synch. Detector Board in a 1045 for this exact problem and error code.

I'd start by cleaning up any toner on the LD unit, and re-seating all the electrical connectors on the laser unit. If that doesn't clear things up, it's probably one of two things, the LD Unit or the Synch. Board. I'd lean more towards the Synch. Board myself, but you never know...

Hello sir; Sometime this problem can be reset, just let's try, ; Press " clear mode ", "107", "stop/clear" key until screen show out sp mode then turn power off and back on again.

Hello sir; Try to reset if not work you need to replace laser unit, the reset procedure as follow; press "clear mode " then 107 then press " clear/ stop " until screen change ,then touch "copier sp " ,then turn power off and back on .

LD unit, or BICU board....Do LD pitch adjustment -both 400 and 600dpi

sometimes the plastic of the laser is turned by the heat proves to relax and to fit the screw that holds the laser unit that is of the side of the drum while it raises a millimeter with a screwdriver, this sometimes works.
Verifies that the glasses and mirrors well be positioned correctly.
Other

Poor connection between the laser
synchronization detector board and
the LD unit.
Laser synchronization detector board
out of position
Laser synchronization detector board
defective
LD unit defective

Never heard of this happening to five machines before.  Check the connections in the laser unit.