Subparagraph e(1), line 4. After the word "screws," add: on the
PH-637/PFP and the PH-637A/PFP. On the PH-637B/PFP,
two threaded bushings are provided at the top of the housing to
accept the captive screws of the aperture plate holders.
Subparagraph e(2). Delete subparagraph e(2) and substitute:
(2) Aperture plates. The aperture plates supplied with projectors
PH-637(*)/PFP are slightly different in size. Refer to paragraph
4 for the sizes of the aperture plates supplied with each Projector
Page 9, subparagraph f. Next to the last line. Change "(PH-637/PFP
only)" to: (PH-637/PFP and PH-637B/PFP).
Paragraph 6, line 3. Change "PH-637A/PFP only" to: PH-637A/
PFP and PH-637B/PFP.
Page 10, paragraph 9, line 1. Change the introductory sentence to:
The differences between Projectors PH-637/PFP, PH-637A/PFP, and
PH-67B/PFP are as follows:
Page 11, paragraph 9. Make the following changes:
Subparagraph a. Add subparagraph (3) after subparagraph (2):
(3) Projector PH-637B/PFP has no housing cover over the pro-
jection stage, and it has a slightly different housing shape. The
left-hand shelf must be swung down before the PH-637B/PFP
can be operated. The front shelf may be removed, but the
pencil-groove section is part of the projection stage. The rear
surface mirror adjusting screws can be reached from the sides
of the projector housing without disassembly.
Subparagraph b, line 2. After "PH-637A/PFP," add: and the
Line 5. Delete the third sentence and substitute: (A heat-absorbing
filter is supplied with the PH-637B/PFP.)
Subparagraph c, line 5. After "PH-637A/PFP" add: and the PH-
Add subparagraph c.1 after subparagraph c:
c.1. The power cable supplied with Projectors PH-637/PFP and
PH-637A/PFP are removable and have a two-wire connector on each
end. The power cable on the PH37B/PFP has one end permanently
connected and a three-wire connector on the free end.
Subparagraph d, line 2. After "PH-637A/PFP," add: and PH-
Page 12, paragraph 10. Make the following changes:
Subparagraph a, line 6. Delete the word "wooden".
Subparagraph a( 1 ) . Add the following note after subparagraph (1):
Note. If the equipment is received domestically packed (less the wire-
bound box), eliminate the steps in (2) through (5) below and proceed directly
to the step in (6) below.