Error sc 329
This is for a Ricoh copier. You did not indicate machine.
SC 329: Laser Beam Pitch Adjustment Error
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The LD unit home position sensor does not detect an on condition while changing the LD unit position for correcting the LD position or changing the DPI.
Instructions from the Service Manual below...
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5.4.3 LASER BEAM PITCH ADJUSTMENT
There are two laser beam pitch adjustment procedures: one for 400 dpi, and one
for 600 dpi. These adjustments use the following SP modes.
· SP2-109-1: Laser Beam Pitch Adjustment - 400 dpi
· SP2-109-2: Laser Beam Pitch Adjustment - 600 dpi
· SP2-109-3: Laser Beam Pitch Initial Setting - 400 dpi
· SP2-109-4: Laser Beam Pitch Initial Setting - 600 dpi
· SP2-902-2, no.12: IPU Test Pattern - Cross Stitch - 400 dpi
· SP2-902-2, no.13: IPU Test Pattern - Cross Stitch - 600 dpi
1. Perform SP2-109-8 (Beam Pitch Data Reset).
2. Input the value for 400 dpi that is printed on the LD unit into SP2-109-1.
Use the value printed after "P" on the new LD unit as shown below.
NOTE: Do not use values printed after a "V".
(These value numbers are on a sticker inside the machine with a UPC code on it. The numbers are just under the UPC barcode. And example number looks like this: "15980300151P: 120, 172", so the example 400 dpi value here is "120".)
3. Press the "Enter" key.
4. Perform SP2-109-3.
5. Print the 400-dpi test pattern onto A3 (11"x17") paper using SP2-902-2 no.12
(cross stitch). (See Service Tables - Test Pattern Printing - Section 4.2.3, pasted below.)
6. Write the value of SP2-109-1 on the test pattern which was input at step 2.
7. Change the value of SP2-109-1 and print another test pattern, repeating steps
2 to 5. Print about 5 patterns with different values for SP2-109-1 (e.g. "48", "96",
"192", "240").
8. Check this test pattern. If the laser beam pitch is not correct, the image looks
like a black vertical stripe pattern.
NOTE: If the laser beam pitch is correct, the vertical stripe is not so noticeable.
If the value is not correct, the vertical stripe pattern is darker.
9. Adjust the laser beam pitch position until the thin lines are of uniform thickness
(no striping effect should appear on the printout), doing steps 2, 3, and 4. (In
step 2, input a value which is estimated to be correct, then do steps 3 and 4,
then if necessary go back to step 2 and try another value.)
10. After adjusting the laser beam pitch for 400 dpi, adjust the laser beam pitch for
600 dpi, using the same procedure as for 400 dpi (use the SP modes for 600
dpi).
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4.2.3 TEST PATTERN PRINTING (SP2-902)
NOTE: Do not operate the machine until the test pattern is printed out completely.
Otherwise, an SC may occur.
1. Access the SP mode which contains the test pattern you need.
2. Press exit, then touch the "Copy Mode" key on the operation panel to access
the copy mode display.
3. Select the paper size.
4. Press the "Start" key to print the test pattern.
5. After checking the test pattern, exit copy mode by touching the "SP Mode" key.
Reset the test pattern to 0.
6. Exit the SP mode.
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Test Pattern Table (SP2-902-2: Test Pattern Printing - IPU)
No. Test Pattern
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0 None
1 Grayscale 1
2 Grayscale 2
3 Grayscale 3
4 Grayscale 4
5 Grayscale 5
6 Vertical Lines (256-greyscale) 13 Cross Stitch (600 dpi)
7 Vertical Lines (1-dot)
8 Vertical Lines (2-dot)
9 Hatch Pattern
10 Cross Pattern
11 Slant Pattern
12 Cross Stitch (400 dpi)
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Test Pattern Table (SP2-902-3: Test Pattern Printing - Printing)
No. Test Pattern
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0 None
1 Vertical Line (1-dot)
2 Horizontal Line (1-dot)
3 Vertical Line (2 dot)
4 Horizontal Line (2-dot)
5 Grid Pattern (Single-dot)
6 Grid Pattern (Double-dot)
7 Alternating Dot Pattern
8 Full Dot Pattern
9 Black Band
10 Trimming Area
11 Argyle Pattern
12 16 Grayscales (Horizontal)
13 16 Grayscales (Vertical)
14 16 Grayscales (Vert./Hor.)
15 16 Grayscales (Vert./Hor Overlay)
16 Not used
17 Horizontal Line (1-dot)
18 Grid Pattern (Single-dot)
19 Grid Pattern (Double-dot)
20 Alternating Dot Pattern
21 Blank Page
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These adjusments listed in the manual require removal of a service panel and mechanical adjustment of the laser mounts, so it should be done by a qualified technician.
However, these test procedures can indicate whether or not this is the problem with your printer.
I have the same symptoms on my 50" plasmavision...In addition to the graph-like black lines however, the image displayed on all video sources is tinted a very deep magenta or purple. It lookws as if you were wearing purple tinted glases.
The actual picture quality is not affected other than the symptoms listed above...but it is hardly watchable.
I had purchased the Plasmavision from The Good Guys along with paying additional for a three year extended warrantee for an additional $900.00. At arround the 2 year mark the unit experienced a power source burn out. I called a certified Fujitsu repair service in Los Angeles, Ca.
They informed me that the needed power supply to repair the TV was on backorder by the distributors and that no known production date for the part was scheduled according to Fujitsu factory reps. I promply emailed Fujitsu Corporate attaching a then current Audio Video trade publication article touting Fujitsu'e "Best warrantee coverage in the plasma market..."and continued on by comparing all the popular brand name TV manufacturer warrantees, all of which of course fell short of the Fujitsu warrantee. I'm sure that the accompanying email was every bit as scathing and condenming as all who read are thinking it was... as well as threatening to write to that publication's editorial department so that they may publish the warrantee's effectiveness. Needless to say, the power supply arrived with the repair service two days later.
About two years later the issues that are described at the beginning of this long story came about and as it turns out the extended warrantee I paid extra for, ran concurrently with the original factory warrantee...Not covered under any warrantee...
...So here's the juice...It turns out that the problen we are experiencing is due to a bad or burnt out main video board. Although I paid $60.00 for the honor of the appearance of a service technitian at my home, he would not devuldge any identifying details other than that the part will cost $1,100.00 plus tax in addition to the $350.00 labor charge...$1,400.00 total...
It still hangs on my wall, dark and the only immage it emminates is the darkened immages it reflects from the opposite swide of the room.
My only plan, short of extracting $1,400.00 from my stretched budget, is to somehow find a rebuilt, black market, or possibly a known compatible OEM generic Main Video Board replacement part and a service manual to follow the repair procedures myself.
This had been a 50" thorn in my side hanging on my wall. I haven't had the heart to dismount the TV nor have I felt supported and confident enough to have ever written in a forum such as this one regarding this.
If someone reading this blog actually still reading this saga, now determined to read it to the end, has information on obtaining an inexpensive Video Board and an accompanying Service manual, please reply hear in addition to my email liswted below.
[email protected]
Thank you,
Does the grid pattern go away if you cycle through the modes?
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