Similar models: P5 (mechanically the
same). Super Program and A3000
(electronically similar)
Product #: P30 (domestic version) —
25300; P3 (American version) —
25301
Batteries: 2ea S76 (negative ground)
Fig. I —top cover removed
Fig. 2 bottom cover removed, wind
lever held partially advanced
Fig. 3—top view, wind side
Fig. 4 -front view, mirror box
removed
Fig. 5-—mirror box. bottom view
Fig. 6 underside of PC board T100
(Ilex)
Fig. 7—top view of wind side, mirror
box removed
Fig. 8—bottom view of wind side,
ratchet wheel removed
Fig. 9—top view of wind side, wind-
ing seal removed
Fig. 10 top view of wind side, wind
shaft removed
Fig. 11 — underside of top mechanism
plate — reassembly position
of pawl
Fig. 12—top view of wind side, top
mechanism plate removed
Fig. 13—sprocket-hook timing
Fig. 14—sprocket timing
Fig. 15—counter-gear timing
Fig. 16 — test points, underside of PC
board T100 (flex)
Fig. 17—lest points, main-switch
block
Fig. 18—test points, LED block
Fig. 19—wiring variations, early style
PC board T100
Fig. 20—test circuit for optical
encoder
Fig. 21 —wiring pictorial and test
points
ADJUSTMENT LOCATIONS:
Aperture-control voltage
Auto exposure
Focusing screen
Wind-completion switch
Sprocket hook
Travel time. 2nd curtain
Travel time, 1st curtain
Timing switch (fast speeds)
Shutter release
A
B
C*
D
E
F
G
H**
I
PENTAX P3, P30
Not shown:
Aperture-value resistor. Variable resis-
tor at back of front plate, wind side
top (near mirror box).
Mirror angle. Hex nut on wind side of
mirror box, under mirror (reach
through lens opening).
•There are four adjustment points for
the height and level of the focusing
screen. To reach the two adjustments
at the front, remove PC board T100
(flex). However, if the focus at the
focusing screen is incorrect, you can
make minor adjustments on the mir-
ror angle. Use a 2.5mm hex key to
turn the hex nut.
**lf you adjust the timing switch.
apply conductive paint between the
timing-switch adjustment and the
shutter mechanism plate to improve
the ground.
ADJUSTMENT VALUES:
Curtain-travel time: 6.05 ± 0.3ms
(21mm distance), 5.76ms (20mm
distance)
Flange-focal distance: 45.46 ±
0.04mm (flange to film rails)
Aperture-control voltage: 500 ±
l00mv P-P
Battery check: 2.45V — LEDs normal
2.35V — LEDs pulse
on and off
sws
DEPTH-OF-FIELD
PREVIEW LEVER
LEFT-
HAND
CRYSTAL
A
B
APERTURE-
VOLTAGE
TP
MAIN SWITCH
SHUTTER-
SPEED
PC BOARD
c
WIND-COMPLETION
SWITCH
D
A/M CONTACT
MECHANICAL
RELEASE
WINDING-GUIDE
PLATE ASSEMBLY
0-C102
E
TRANSPORT
LATCH 0-C108
SHUTTER-
CHARGE
LEVER
RATCHET
WHEEL
0-C106
FIGURE 2
FIGURE 1
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