Ihagee EXA 1 Instrucciones de funcionamiento
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[Translated from the German Ihagee manual with the aid of QuickDic 7.2
(www.quickdic.de
)
. Notes in square brackets are mine – Steve Sheppard.]
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EXA, EXA I Repair Manual.
Basic Remarks:
The camera under repair is placed with the lens mount 350.09 to the front, i.e. in the photograph
taking direction.
EXA
Right: Side with wind knob 350.07-23.
Left: Side with time setting lever 350.04 U 3.
EXA I/63
Right: Side with wind knob 350.17-24.
Left: Side with time setting disc 350.21 U 3.
All screws and nuts have right-hand threads. Never use force!
Before every repair remove the viewfinder (Do not touch the ground-glass screen).
A. Disassembly of EXA camera.
1. Remove the back 350.02
a) Withdraw the take-up spool 350.10.
2. Right side open.
a) Slacken the grub-screw in the wind knob 350.07-23, and withdraw the wind knob upwards.
b) Remove the two top-plate screws M1.2 DIN 91, take off the right top-plate 350.01-7, and
the rewind release button 350.01-6.
c) Refit the wind-knob. The grub-screw must be firmly tightened on the milled face of the
spindle. Take notice of the ratchet pawl 350.07-22 for the frame counter.
3. Left side open.
(This disassembly is not necessary to dismantle the inner parts.)
a) Remove the two top-plate screws M1.2 DIN 91.
b) Slacken the grub-screw in the wind knob 350.07-23, and withdraw the wind knob upwards.
Withdraw the rewind spindle 350.12-6 from below.
c) Take off the left top-plate 350.03-7.
d) Refit the rewind knob. Tighten the grub-screw firmly on to the milled face of the rewind
spindle.
4. Mechanism removal.
a) Cock the shutter.
b) Place the camera front upwards.
c) Remove the four fixing screws M1.7 x 6.5 DIN 91 from the lens flange 350.09, and remove
the flange (noting any shims 300.21-52/1).
d) Remove the shutter inhibit lever 300.21-46, the screws M1.2 for the front-plate, and the
front-plate 350.11 U1 (or 350.11 U3).
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e) Remove the fixing screw M1.7 x 4 DIN 63 for the inner mechanism (in the milled area for
the lens flange).
f) Place the camera back side uppermost.
g) Remove the inner-mechanism fixing screws M1.7 x 4 DIN 85 in both cassette chambers.
h) Place the camera upright.
i) Remove drive-pinion 350.01-9 from sprocket spindle 350.01-4.
j) Set shutter speed lever 350.04 U 3 to B, and extract the inner mechanism from the outer
housing. Do not touch the mirror.
AA. Disassembly of EXA 1/63 camera.
1. Remove the back 370.20.
a) Withdraw the take-up spool 370.09.
2. Removal of top-plate 350.21 U1.
a) Remove screw 350.21-24, bush 350.17-25 for frame-counter disc, frame-counter disc
350.17 U5, and spring-washer 350.17-27. Withdraw wind knob 350.17-24, pushing against
the end of the wind bush 350.17 U4 with two flats [Zweikant].
b) Withdraw the spool-retaining spring 300.15 U 12 from the rewind bush. Unscrew the
rewind bush [remove the screw] (pay attention to compression-spring 350.21-29, shim
beneath 300.15-34, and distance piece 370.21-21), and pull out the rewind spindle 350.21-
20 with rewind-knob 350.21-19.
c) Release circlip 6 DIN 6799, remove spring-washer 370.04-45, and take off time-setting disc
350.21 U 3.
d) Remove the four top-plate fixing screws M1.4 x 3 DIN 91, and take off the top-plate.
e) Refit the time-setting disc with spring-washer and circlip (pay attention to the contact disc
350.22-13 and setting slide on time plate 350.22-U1)[i.e. make sure the pin on time setting
disc engages with the paxolin disc and the sliding plate for speed setting below].
f) Refit the wind-knob, spring-washer and frame-counter disc with sleeve and screw (pay
attention to rewind latch 350.17-19).
3. Mechanism removal.
a) Cock the shutter.
b) Place the camera front side upwards.
c) Remove the four fixing screws M1.7 x 6 DIN 63 for the lens-flange 350.09, and take off the
lens-flange (noting any shims 300.21-52/1).
d) Remove the mechanism fixing screw M1.7 x 4 DIN 63 (in the milled area for the lens
flange).
e) Place the camera with the back side upwards.
f) Remove the inner mechanism fixing screws M1.7 x 4 DIN 84 in both cassette chambers.
g) Extract the inner mechanism from the outer housing. Do not touch the mirror.
B. EXA assembly.
1. Mechanism insertion.
As under disassembly of camera A.4, but in reverse order. Check for correct functioning.
2. Close left side.
As under disassembly of camera A.3, but in reverse order. Check for correct functioning.
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3. Close right side.
As under disassembly of camera A.2, but in reverse order. Check for correct functioning.
4. Check and adjust the distance between the lens mount and the film plane.
Check along the film-path with a Meßuhr [means dial-gauge - should be depth-gauge, surely?].
The distance between the lens-mount and the film-guides must be 44.72 ± 0.01mm. The film-
path should be set accordingly [presumably by means of shims under the mount. There is no
way of setting the film-path itself].
5. Check and adjust the mirror position.
(Collimator is set to infinity).
a) Example 1:
The greatest sharpness lies before the infinity stop of the lens: hold the mirror retaining
spring 300.23 U 5 with the mirror hook (see diagram Fig. 1). Bend the chamfered rivet on
the mirror retaining spring downwards, until the greatest sharpness is obtained at the infinity
mark of the lens.
b) Example 2:
The greatest sharpness is not yet obtained at the infinity stop of the lens (i.e. the point of
sharpest focus would lie beyond the infinity stop): hook the mirror retaining spring (with a
screwdriver or knife) behind the chamfered rivet and bend it into the mirror chamber until
the greatest sharpness is obtained at the infinity mark on the lens.
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BB. Assembly of camera EXA I/63.
1. Mechanism insertion.
As under disassembly of camera AA.3, but in reverse order. Check for correct functioning.
2. Top-plate 350.21 U 1 fitting.
As under disassembly of camera AA.2, but in reverse order. Check for correct functioning.
3. Check and adjust the distance between the lens mount and the film plane.
As under assembly of camera B.4.
4. Check and adjust the mirror position.
As under assembly of camera B.5.
C. Elimination of certain faults.
1. Shutter flap 350.04 U 5 falls back. [i.e. mirror is not caught by retaining spring]
a) Open right side (EXA) or remove top-plate 350.21 U 1 (EXA I/63).
As under camera disassembly A.2 or AA.2.
b) Bend apart the adjustable slot on the mirror cocking lever 350.04 U 2 (EXA), 350.04 U 7
(EXA I/63), see Fig. 2, until cocking stroke suffices and shutter flap goes past the retaining
spring 300.23 U 5 by about 0.5mm.
If the shutter flap falls back despite the adjustment of step b), then the mirror retaining spring
does not lie correctly in place in contact with the shutter release lever 350.04-8.
c) Remove the mechanism.
As under camera disassembly A.4 or AA.3.
d) Give the mirror retaining spring a bias [i.e. bend it down], being mindful of the mirror
setting.
e) Replace the mechanism.
As under disassembly of camera A.4 or AA.3, but in reverse order. Check for correct
functioning.
f) Close right side (EXA) or replace top-plate (EXA I/63).
As under disassembly of camera A.2 or AA.2, but in reverse order. Check for correct
functioning.
g) Check and adjust the distance between the lens mount and the film plane.
As under assembly of camera B.4.
h) Check and adjust the mirror position.
As under assembly of camera B.5.
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2. Shutter does not engage (Shutter flap 350.04 U 5 runs closed) [i.e. second part of shutter
does not catch and runs with mirror]
Dismantle camera, as under Disassembly of Camera A.1 - A.4, or AA.1 - AA.3, and do as
described in Elimination of certain faults C.1 - Shutter flap falls back.
a) Verify the functioning of all the shutter levers together (i.e. levers must slide well and mirror
retaining spring must rest against the release lever 350.04-8). If Point a) is ensured, without
the fault being rectified, the shutter must be adjusted and/or readjusted.
b) Set the timing lever 350.04 U 3 (EXA) or 350.21 U 3 (EXAI/63) to B. Cock the shutter.
c) Restraining the first shutter flap with a finger, fire the shutter and let the first shutter flap run
slowly. Do not grasp the mirror. The release of the first shutter flap must occur about 2mm
before the shutter release lever stop. The release point is varied by the bend at the
adjustment slot in the shutter release lever.
d) Allowing the shutter release lever to move slowly outwards, the release of the second part of
the shutter flap must occur about 2mm before the edge of the plate [the plate above?]. The
release point is adjusted by bending the release nose of the shutter release lever [the lower
end].
e) Cock the shutter.
f) Release the shutter and pay attention to the second shutter flap. This must move in the
direction of the first shutter flap by about one millimetre before being stopped by release
lever 350.04-12 [the one at the bottom corner]. If this does not occur, the release lever must
be corrected [gerichtet] [i.e. bend the part turned inwards?].
g) Set the exposure time lever to 1/50 sec or 1/60 sec. Cock the shutter.
h) Holding the first shutter flap with a finger, fire the shutter and let the first shutter flap run
slowly, the release pin for the first shutter flap (see Fig.3) must now run towards the point
on the secondary lever on the exposure time lever. If this does not occur, the Anschlag
[?tab/stop?] on the secondary lever must be adjusted.
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i) Set the exposure time lever to 1/150 sec or 1/175 sec. Cock the shutter.
j) Holding the first shutter flap with a finger, fire the shutter and let the first shutter flap run
slowly. The release pin for the shutter flap (see Fig.4), must now release the second shutter
flap in the indicated position. If this does not occur, the trip lever 350.04-13 [the long
vertical lever] must be bent at its lower end.
k) Control of the release at all shutter speeds.
The release of the second shutter flap must occur as described in Point j) at all shutter
speeds. If readjustment at the 1/50 sec (or 1/60 sec) or 1/25 sec (or 1/30 sec) should still be
necessary, then this is to be made at the curve of the trip lever over the half-round recess.
l) Check the shutter with a shutter time measuring device.
Example 1:
Shutter too light: Reduce the tension of the first shutter flap, or increase the tension of the
second shutter flap. [HOW?????????????????????????????????]
Example 2:
Shutter too dark: Increase the tension of the first shutter flap, or reduce the tension of the
second shutter flap. [HOW?????????????????????????????????]
The options of the shutter time adjustment stated under l) are used alternatively by the
camera mechanic.
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3. Mirror 300.21-53 replacement.
a) Remove the back 350.02 (EXA) or 370.20 (EXA I/63).
b) Place the camera front uppermost.
c) Remove the four lens-mount fixing screws M1.7 x 6.5 DIN 91 (EXA) or M1.7 x 6 DIN 63
(EXA I/63). Remove the lens-mount (noting any shims 300.21-52/1).
d) Guide the front edge of the shutter flap to the level of the gap in the round opening in the
outer casing. Bend outwards both the retaining tabs (left and right) for the mirror.
e) Slide the mirror out.
f) Insert the new mirror and bend the retaining tabs back inwards.
g) Replace the lens mount.
h) Check/adjust the lens mount to film path distance.
See under assembly of camera B4.
i) Check/adjust the mirror position.
See under assembly of camera B5.
4. Frame-counter failure.
EXA
a) Open right side, described in Disassembly of Camera A.2.
b) Cock and fire the shutter, observing the spring for the ratchet-lever 350.07-17.
c) Bend the spring for the ratchet-lever, near the mounting of the frame-counter disc 350.07-
21, so it engages with the teeth.
d) Close the right side. As in Disassembly of Camera A.2, but in reverse order.
e) Check the operation.
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5. Synchronisation failure.
Adjusting the flash synchronisation.
EXA
Dismantle the camera, as under Camera Disassembly A.1 - A.4.
a) Set the exposure time lever to the 1/25 sec position and cock the shutter.
b) Holding the leading edge of the shutter flap with a finger, fire the shutter and let the leading
edge of the shutter flap run slowly. The X-contact must fire near the position shown in Fig.
5, and the F-contact near the position shown in Fig. 6. If they do not do so, the contact
spring must be bent at the flash contact accordingly.
c) Reassemble the camera, see Assembly of Camera B.1 - B.5.
Adjusting the flash synchronisation.
EXA I/63
Note:
The setting of both flash contacts (X and F) depends on the linkage between the time setting
disc 350.21 U 3 and the contact disc 350.22-13 on insulating-part I 350.22 U 4. Because of
this, setting the shutter times causes at the same time a changeover of the contacts.
The X-synchronisation takes place at shutter speeds of 1/60 sec and B.
The F-synchronisation will operate at shutter speeds of 1/175 sec, 1/125 sec and 1/30 sec.
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Adjusting the insulating-part I. [the insulating block under the time-setting disc]
Dismantle the camera, as under Disassembly of Camera AA.1 - AA.2.
aa) At the F-synchronisation the contact spring of insulating-part I must touch the contact pin
(where the connection for the coupling wire 350.22-11 is). If necessary bend the contact
spring accordingly.
bb) Replace the top-plate 350.21 U 1, as under assembly of camera BB.1 - BB.2.
Adjusting the insulating-part II. [the block with the flash contacts on the right below the
wind mechanism]
Dismantle the camera, as under Disassembly of Camera AA.1 - AA.3. Check the F-contact:
cc) Set the time setting disc to 1/30 sec and cock the shutter.
dd) Restrain the shutter flap, release the shutter and let the shutter flap run slowly; the F-
contact must fire as shown in Fig. 7. If this does not occur, the contact spring for insulating-
part II must be bent accordingly.
Este manual sirve para los siguientes modelos
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