Canon QL 17, QL 19 User Manual

CANONET G-III 17

Similar models: Canonet QL 17/19
Battery: 1 ea. PX13
Fig. 1 — top cover removed
Fig, 2 — bottom cover removed
Fig. 3 — front cover plates removed
Fig. 4 — front view, lens standard

removed
Fig. 5 — back of lens standard
Fig. 6 — shutter separated from lens

standard
Fig. 7 — old and new battery-test

boards, wiring
Fig. 8 — terminal board, wiring
ADJUSTMENT LOCATIONS:

Rangefinder, horizontal A
Rangefinder, vertical B
Meter calibration C

Meter housing position D
Rangefinder resistor E
Diaphragm opening F

Trapping blade Q

Release over travel H
Transport release I
Focus J

ADJUSTMENT PROCEDURE:

1. Hold the control end of the meter
needle aligned with the f/5.6
scribe line, Fig. 3. and release the
shutter at the auto setting. The
diaphragm should stop down to
f/5.6. To check, watch the
diaphragm as you rotate the
diaphragm-setting ring to the
manual f/stop settings. When the
diaphragm just starts to open,
the f/stop calibration tells you
the actual diaphragm opening.
The diaphragm should start to
move when you reach the f/5.6
calibration. Adjust with eccentric

F, Fig. 3.

2. Hold the control end of the
needle aligned with the f/5.6
scribe and note the f/stop
indication through the finder.
Bend the readout end of the
needle to align with f/5.6 in the
finder.

3. If you make the adjustment in
step #1, check to make sure the
trapping blade is not in the path
of the meter needle until you
push the release. The curved
edge of the trapping blade
should align with the curve in the
slot, Fig. 3. Turn the eccentric —
G in Fig. 3 —so that the trapping

blade clears the needle. If the
camera does not have the
eccentric, you may have to bend

pin G, Fig. 4.

4. Make sure that the shutter

releases after the stepped blade
engages the needle to set the
aperture. Adjust with eccentric I
or by changing the spacer
thickness between the shutter­release plate and the connecting
lever, Fig. 3. Also adjust the
release over travel (at least
0,4mm additional travel of the
release button after the shutter
releases) with eccentric I.

Adjust the meter accuracy with
variable resistor C or by rotating
the galvanometer housing after

18/SPT JOURNAL

loosening the locking screw. If

you rotate the housing, check the

CATS adjustment (step #6).
Proper needle readings at ASA

100. K-factor 17 5:
EV8 1/30 f/2.8 ±1 stop
EV11 1/60 f/5.6 +1 stop
EV14 1/125 f/11 +-1 Stop

6. CATS adjustment. Set auto, ASA
100, and the 2-meter focus

position. Cover the CdS ceil and
short between ground and the
CATS contact, Fig. 1. The needle
should indicate between f/5 6
and f/8. If not, rotate the meter
housing or shift the position of

the rangefinder-resistor band,

Fig. 2.

7. Focus adjustment. Loosen the

three setscrews on the outer
circumference of the focus ring.

Also loosen screw J, Fig 3. Set
the focus ring to infinity and slide
screw J for the best infinity focus.

DISASSEMBLY HIGHLIGHTS:
Position of left-hand threads: shutter­retaining ring in G-lll (normal thread
in Now Canonet QL 17/19)

Sequence:

1. top and bottom cavers (battery
cover and cover spring loose)

2. 2 sections, front leatherette

3. 2 front-cover plates, one on each
side of lens (2 screws each)

4. unsolder red wire from battery­test board, Fig. 7

5. 2 screws holding shutter-release
plate to connecting lever (adjust-

ment spacer loose)

6. 4 screws, corners of lens

standard

7. lift aside lens standard (view-

finder mask loose)

8. unsolder blue battery wire from

terminal board

Sequence to remove shutter:

1. unsolder the five wires that come
through the shutter port:

—yellow from rangefinder

resistor

—white and purple from terminal

board
—red from variable resistor
—black from hot-shoe contact

2. free wires from wire clamps

3. rear light shield (2 screws)

4. unscrew rear lens group

5. unscrew shutter-retaining ring
(left-hand thread in G-lll)

Sequence to reach switches at front
of shutter:

1. front-retaining ring, identifica­tion ring, photocell mask

2. unscrew front lens group

Note: Unscrewing the complete lens
cell requires a special spanner
T0630-13-9246-1T. Without the
special tool, you can first remove the
front element. It's then possible to
reach the spanner notches in the cell.

3. 2 screws holding CdS cell

4. filter ring (3screws) — pass CdS
cell through cutout in filter ring

5. speed-setting ring (tab on ring

passes into slot in speed cam)

6. film-speed setting ring
Note. To reach the shutter
mechanism, disassemble from the
back of the shutter rather than from
the front.

REASSEMBLY HIGHLIGHTS:
To mount the shutter to the lens
standard:

1. Seat the intermediate ring and
the charge ring on the back of the
shutter, Fig. 6.

2. Push the end of the shutter­release lever as far as it will go

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