[sane-devel] ADF problem on HP ScanJet 8270 (ERR: Scanner cover is open)

[Marius Ruth]

Hi list,

I have a very annoying issue with the HP ScanJet 8270 I bought a few days ago.
Although normal scanning works great when I try to use the feeder
(ADF) I get this error:
"Scanner cover is open"
Obviously, the scanner cover is NOT open. I search everywhere for a
solution but there seems to be none that will work.
Scanner is running properly in Diagnostic mode.
I've also tried what this person suggested with no luck:
http://lists.alioth.debian.org/pipermail/sane-devel/2005-December/015797.html

I'm running CentOS release 5.5, kernel 2.6.18-194.el5.
*sane* packages from RPM will not detect the scanner so I compiled it
from source code.
I've tested with the latest stable versions:
sane-backends-1.0.21,
sane-frontends-1.0.14,
xsane-0.996

and with the latest development release:
sane-backends-git20100705.tar.gz
sane-frontends-git20100705.tar.gz

The error message I get in sane for both is: "Scanner cover is open"
The error I see on the HP scanner LCD is "Error 15"
Scanner is connected via USB.
I've tried with xscan, scanimage -b, scanadf (all with same results,
the issue is definitely with sane and not the frontends.. i think)
I've also tried to play with the sourcecode of the "avision" lib
quickly commenting the "cover open status" checks and calls, still no
luck. I'll try to debug the code tomorrow but until then i'd really
like to know if anybody over here can help me out please.

My theory is that the adf is not properly initialized and this is why
the feeder scanning fails. I can hear a noise comming from the feeder
when I issue the command to scan but it dies with the "scanner cover
is open" error message after ~5 seconds.

I've uploaded a full debug log here: http://pastebin.com/HXzhMPsu
Relevant snapshot from debug run follows:

[avision] avision_usb_status: Needs to request sense!
[avision] sense_handler:
[avision] sense_handler: data:
[avision]   [0] 11110000b 360o 240d f0x
[avision]   [1] 00000000b   0o   0d  0x
[avision]   [2] 00000011b   3o   3d  3x
[avision]   [3] 00000000b   0o   0d  0x
[avision]   [4] 00000000b   0o   0d  0x
[avision]   [5] 00000000b   0o   0d  0x
[avision]   [6] 00000000b   0o   0d  0x
[avision]   [7] 00001110b  16o  14d  ex
[avision]   [8] 00000000b   0o   0d  0x
[avision]   [9] 00000000b   0o   0d  0x
[avision]   [10] 00000000b   0o   0d  0x
[avision]   [11] 00000000b   0o   0d  0x
[avision]   [12] 10000000b 200o 128d 80x
[avision]   [13] 00000010b   2o   2d  2x
[avision]   [14] 00000000b   0o   0d  0x
[avision]   [15] 00000000b   0o   0d  0x
[avision]   [16] 00000000b   0o   0d  0x
[avision]   [17] 00000000b   0o   0d  0x
[avision]   [18] 00000000b   0o   0d  0x
[avision]   [19] 00000000b   0o   0d  0x
[avision]   [20] 00000000b   0o   0d  0x
[avision]   [21] 00000000b   0o   0d  0x
[avision] sense_handler: sense code: MEDIUM ERROR (mostly ADF)
[avision] sense_handler: scan has not yet been completed
[avision] sense_handler: correct logical length
[avision] sense_handler: sense code: ADF cover open
[avision] reader_process: start_scan faild: Scanner cover is open
[avision] sane_read: got 0 bytes, err: 0 Success
[avision] do_eof:
[avision] do_eof: returning 8
[avision] sane_cancel:


Please advise,
Thanks,
M