Can't read Emacs manual

[Rodolfo Medina <rodolfo.medina@gmail.com>]

Hi to all Emacs users.

When I type `C-h r' the Emacs manual is not open, and I get the following error
message in the echo area:

        Invalid face family: ""

This is due to some code in my ~/.emacs, that I report.  Please help modify it
in order to solve the problem.  I have now Emacs cvs 23.0.91.1.  That code used
to work fine with Emacs 22.

Thanks in advance,
Rodolfo


(add-hook
 'Info-mode-hook
 (lambda ()
   (set-face-attribute
    'info-title-1 nil
    :weight 'bold
    :height 1
    :family "-Sony-Fixed-Medium-R-Normal--16-120-100-100-C-80-ISO8859-1"
    )))

(add-hook
 'Info-mode-hook 
 (lambda ()
   (set-face-attribute 
    'info-title-3 nil
    :weight 'bold
    :height 1
    :family "-Sony-Fixed-Medium-R-Normal--16-120-100-100-C-80-ISO8859-1"
    )))

(add-hook 
 'Info-mode-hook 
 (lambda ()
   (set-face-attribute 
    'info-menu-header nil
    :weight 'bold
    :height 1
    :family "-Sony-Fixed-Medium-R-Normal--16-120-100-100-C-80-ISO8859-1"
    )))