PSC_1400 No Scanner found

[Vassari]

Scanner is no longer detected with in PSC_1400. Here's the output of hp-check:

---------------
| SYSTEM INFO |
---------------

 Kernel: 4.2.0-1-amd64 #1 SMP Debian 4.2.5-1 (2015-10-27) GNU/Linux
 Host: T1
 Proc: 4.2.0-1-amd64 #1 SMP Debian 4.2.5-1 (2015-10-27) GNU/Linux
 Distribution: debian unstable
 Bitness: 64 bit

-----------------------
| HPLIP CONFIGURATION |
-----------------------

HPLIP-Version: HPLIP 3.15.2
HPLIP-Home: /usr/share/hplip

Current contents of '/etc/hp/hplip.conf' file:
# hplip.conf. Generated from hplip.conf.in by configure.

[hplip]
version=3.15.2

[dirs]
home=/usr/share/hplip
run=/var/run
ppd=/usr/share/ppd/hplip/HP
ppdbase=/usr/share/ppd/hplip
doc=/usr/share/doc/hplip-3.15.2
html=/usr/share/doc/hplip-3.15.2
icon=/usr/share/applications
cupsbackend=/usr/lib/cups/backend
cupsfilter=/usr/lib/cups/filter
drv=/usr/share/cups/drv/hp
bin=/usr/bin

# Following values are determined at configure time and cannot be changed.
[configure]
network-build=yes
libusb01-build=no
pp-build=no
gui-build=yes
scanner-build=yes
fax-build=yes
dbus-build=yes
cups11-build=no
doc-build=yes
shadow-build=no
hpijs-install=no
foomatic-drv-install=no
foomatic-ppd-install=no
foomatic-rip-hplip-install=no
hpcups-install=yes
cups-drv-install=yes
cups-ppd-install=no
internal-tag=3.15.2
restricted-build=no
ui-toolkit=qt4
qt3=no
qt4=yes
policy-kit=no
lite-build=no
udev_sysfs_rules=no
hpcups-only-build=no
hpijs-only-build=no

Current contents of '/var/lib/hp/hplip.state' file:
[plugin]
installed = 1
eula = 1
version = 3.15.2

Current contents of '~/.hplip/hplip.conf' file:
[last_used]
device_uri = "hp:/usb/PSC_1400_series?serial=BR6843G1KZ04BM"
printer_name =
working_dir = .

[installation]
date_time = 11/08/2015 20:42:15
version = 3.15.2

[upgrade]
latest_available_version = 3.15.2
notify_upgrade = true
last_upgraded_time = 1425440314
pending_upgrade_time = 0

[settings]
systray_visible = 2
systray_messages = 0

[commands]
scan = /usr/bin/xsane -V %SANE_URI%

[refresh]
rate = 30
enable = false
type = 1

[polling]
enable = false
interval = 5
device_list =

[fax]
voice_phone =
email_address =

 <Package-name> <Package-Desc> <Required/Optional> <Min-Version> <Installed-Version> <Status> <Comment>

--------------------------
| External Dependencies |
--------------------------

 policykit Admin-Policy-framework OPTIONAL - 0.105 OK -
 gs Ghostscript REQUIRED 7.05 9.16 OK -
 network Network-wget OPTIONAL - 1.16.3 OK -
 scanimage Shell-Scanning OPTIONAL 1.0 1.0.25 OK -
 avahi-utils avahi-utils OPTIONAL - 0.6.32 OK -
 dbus DBus REQUIRED - 1.10.2 OK -
 cups CUPS REQUIRED 1.1 2.1.0 OK 'CUPS Scheduler is running'
 xsane SANE-GUI OPTIONAL 0.9 0.999 OK -

-------------------------
| General Dependencies |
-------------------------

 error: reportlab Python-PDF-Lib OPTIONAL 2.0 3.2.0 MISSING 'reportlab needs to be installed'
 libcrypto OpenSSL-Crypto-Lib REQUIRED - 1.0.2 OK -
 pil Python-Image-Lib OPTIONAL - 1.1.7 OK -
 pyqt4-dbus PyQt4-DBUS REQUIRED 4.0 4.11.4 OK -
 libjpeg JPEG-Lib REQUIRED - - OK -
 libpthread POSIX-Threads-Lib REQUIRED - 2.19 OK -
 python-dbus Python-DBUS REQUIRED 0.80.0 1.2.0 OK -
 python-devel Python-SDK REQUIRED 2.2 2.7.10 OK -
 pyqt4 Python-Qt4 REQUIRED 4.0 4.11.4 OK -
 cups-devel CUPS-SDK REQUIRED - 2.1.0 OK -
 sane-devel SANE-SDK REQUIRED - 1.0.25 OK -
 libusb USB-Lib REQUIRED - 1.0 OK -
 sane Scan-Lib REQUIRED - 1.0.25 OK -
 cups-image CUPS-Image-Lib REQUIRED - 2.1.0 OK -
 libnetsnmp-devel SNMP-Networking-SDK REQUIRED 5.0.9 5.7.3 OK -
 python-xml Python-XML-Lib REQUIRED - 2.1.0 OK -
 python-notify Desktop-notifications OPTIONAL - - OK -

------------------------------
| Compile Time Dependencies |
------------------------------

 gcc gcc-Compiler REQUIRED - 5.2.1 OK -
 libtool Build-tools REQUIRED - 2.4.2 OK -
 make GNU-Build-tools REQUIRED 3.0 4.0 OK -

----------------------
| Python Extentions |
----------------------

 cupsext CUPS-Extension REQUIRED - 3.15.2 OK -
 pcardext PhotoCard-Extension REQUIRED - 3.15.2 OK -
 hpmudext IO-Extension REQUIRED - 3.15.2 OK -

-----------------------
| Scan Configuration |
-----------------------

 hpaio HPLIP-SANE-Backend REQUIRED - 3.15.2 OK 'hpaio found in /etc/sane.d/dll.conf'
 scanext Scan-SANE-Extension REQUIRED - 3.15.2 OK -

------------------------------
| DISCOVERED SCANNER DEVICES |
------------------------------

No Scanner found.

--------------------------
| DISCOVERED USB DEVICES |
--------------------------

  Device URI Model
  --------------------------------------------- --------------------------
  hp:/usb/PSC_1400_series?serial=BR6843G1KZ04BM HP PSC 1400 series

---------------------------------
| INSTALLED CUPS PRINTER QUEUES |
---------------------------------

PSC_1400
--------
Type: Printer
Device URI: hp:/usb/PSC_1400_series?serial=BR6843G1KZ04BM
PPD: /etc/cups/ppd/PSC_1400.ppd
PPD Description: HP PSC 1400 Series, hpcups 3.14.6
Printer status: printer PSC_1400 is idle. enabled since Sat 07 Nov 2015 03:13:06 PM ART
Communication status: Good

--------------
| PERMISSION |
--------------

USB PSC_1400 Required - - OK Node:'/dev/bus/usb/001/007' Perm:' root lp rw- rw- rw- rw- rw- r--'

-----------
| SUMMARY |
-----------

Missing Required Dependencies
-----------------------------
None

Missing Optional Dependencies
-----------------------------

Total Errors: 1
Total Warnings: 0

Run 'hp-doctor' command to prompt and fix the issues.

Done.

[Vassari (vassari79)]

Solved!

It was a problem in libsane:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=804240