Canon F-1 New Service Manual
Canon NEW F-1 Service manual
CANON NEW F-1
SERVICE MANUAL
EXPLODED VIEWS
AND
PARTS LIST
CANON INC. JAPAN
Page 1
Canon NEW F-1 Service manual
Contents
1. SWITCH POSITION AND NOMENCLATURE ............................................................................................... 4
2. COVERS ................................................................................................................................................................ 6
3. FRONT PANEL UNIT ATTACHMENT AND REMOVAL .......................................................................... 10
4. FRONT BODY .................................................................................................................................................... 12
5. UPPER BODY (WINDING SIDE)..................................................................................................................... 16
6. TUNGSTEN CABLE ADJUSTMENT.............................................................................................................. 19
7. SPOOL ................................................................................................................................................................. 20
8. SPROCKET ......................................................................................................................................................... 22
9. CHECKS AND ADJUSTMENTS ...................................................................................................................... 23
10. UPPER BODY (REWIND SIDE)................................................................................................................... 31
11. LOWER BODY (I) .......................................................................................................................................... 34
12. LOWER BODY LUBRICATION.................................................................................................................. 38
13. LOWER BODY (II) ........................................................................................................................................ 39
14. ELECTRICAL ADJUSTMENTS .................................................................................................................. 42
15. FRONT PANEL UNIT ASSEMBLY AND DISASSEMBLY...................................................................... 50
16. EYE LEVEL FINDER .................................................................................................................................... 61
17. MOISTURE RESISTANT TREATMENT ................................................................................................... 66
18. WATER RESISTANT TREATMENT .......................................................................................................... 68
19. SHUTTER SPEED VARIATIONS ................................................................................................................ 70
20. SERVICE TOOLS LIST................................................................................................................................. 71
21. TROUBLESHOOTING CHARTS ................................................................................................................ 74
22. PARTS LISTS.................................................................................................................................................. 89
Page 2
Canon NEW F-1 Service manual
Introduction
The NEW F-1 is the base of a completely new Integrated Functional System. It is based on
the original F-1 but utilizing many advances in electronics, precision machining and precision
optics made since the original F-1 was developed ten years ago.
The following considerations should be kept in mind when repairing the New F-1:
1. To maintain complete interchangeability between the camera body and the system
accessories, repair personnel must understand the interfaces (mechanical
and electronic) between the body and accessories. They must also be familiar with
repair standards, checking, adjustment and tools maintenance procedures.
2. Preventive maintenance (lubrication, adjustment and parts replacement) are
necessary to insure the reliability of the NEW F-1.
Special Repair Instructions
1. Many of the electrical contacts in the camera are molded into plastic insulators.
When making solder connections, the soldering time should be kept as short as
possible.
2. 3% silver solder should be used to solder the IC's.
3. Many bearing balls are used in the winding mechanism. Be careful during assembly
and disassembly to insure that no balls get lost in surrounding mechanisms.
4. When the rewind crank is not installed, if the rewind shaft is pushed down past a
certain point it becomes impossible to open the back cover without removing
certain parts that normally need not be removed. This results in lost time.
5. Be sure that the elastic connectors used to connect the flexible and rigid circuit
boards are kept clean and free of contamination.
6. The water and moisture proofing complicates many repair procedures. Take care
that they are correctly performed
7. If the tungsten cable is kinked or frayed, repair is difficult and time-consuming. It is
much more cost efficient to be careful to not damage the cable than to repair or
replace it.
8. The correct adjustment of the AV AE shutter speed indicator output resistor (RM
TV2) and the TV AE aperture determination resistor (RAE) are basic to maintaining
system interchangeability.
Page 3
Canon NEW F-1 Service manual
1. Switch position and nomenclature
Name Operation
SW1 Metering Switch ON: Metering activated
SW2 Release Switch ON: Starts Release sequence
SW4 Count Switch OFF: Shutter exposure timing starts
SW5 Winding Complete Switch OFF: Winding complete
SW6 Stop-down (S.D.) Switch ON: Stopped-down (ganged with SWll1)
SW7 Self Timer Switch ON: Self timer activated
SW8 Battery Check Switch ON: Battery Check
SWll Lens A-M Switch. ON: Lens set to "a" mark
SW1l' Stop-down switch OFF: Lens stopped down
SW12 Bulb switch OFF: "Bulb" shutter speed
SW14 Timer Switch ON: Timer Activated
SW15 Lamp Switch ON: Viewfinder illumination on
SW16 X Sync Switch ON: 1st curtain open; OFF: Winding complete
SW16' Safety Switch ON: Mirror up; OFF: Mirror down
SW17 Film End Switch ON: No film on take-up spool
SW18 2nd Curtain Switch OFF: When 2nd curtain starts
Page 4
Canon NEW F-1 Service manual
1) SW12 and SW18 Relationship
2) SW16 and SW16' Relationship
3) SW11, SW6 and SW11’ Relationship
1st curtain
X contact must turn off after the 2nd curtain
closes and before winding is complete.
SW11
SW6,1
Lens "A"
Max.
ON OFF ON OFF
S.D.
ON OFF
Max: Open aperture S.D.:
Stopped down
Lens "M"
Max.
S.D.
Page 5
2. Covers
Canon NEW F-1 Service manual
Numbers 1-37
Page 6
Canon NEW F-1 Service manual
Disassembly Notes Assembly and Adjustment Notes
1. Remove the smooth face screw (3)
and shutter button (6) with tool
(CY9-6131-000).
2. Be careful not to lose detent
ball (7)-2 inside the camera.
3. The shutter dial cap (9) is glued in place.
4. Seals (8)(14)(29) and (30) are
available in more than one thick
ness to insure correct sealing.
5. When the rewind crank (22) is not
installed, don't push the rewind
shaft all the way down into its
holder. (If it is, time will be
lost in unnecessary work, because
of the click spring.)
6. Press the opening safety stopper
while removing the left top cover
7. (35).
Assembly and Adjustment Notes
1. Put Diabond into the winding
lever shaft hole before final
installation of the screw (3).
2. Lubricate the shutter button
shaft (6) and the interior or
the release lock (7) with GE-C9
[See Water-resistant treatment
(XIX)].
3. Put Lozoid in the detent groove
of the release lock (7).
Note: Numbers in parentheses in the text correspond to circled
numbers one page 6. Disassemble in normal order and reassemble in
reverse order.
4. Place teflon washer (8) under the lock lever
(7). Use a washer that is 0.3mm thicker than
the "A" dimension shown below. (Water
resistance)
A = l.l-(a-b) mm
Washer t = A +0.3mm
5. The teflon washer (14) used under the shutter
dial should be 0.1mm thicker than the "B"
dimension shown below. (Water resistance)
B .= 0.5-(a-b)
Washer t = B +0.1mm
6. When installing the shutter dial, align the notch
in (15) and the pin in the shutter dial ring (13)
with the hole in the top cover. The shutter
must be set to "A" before the dial is installed.
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Canon NEW F-1 Service manual
Assembly and Adjustment Notes
7. Adjust the rewind crank (22) slip torque by changing the friction washer (21).
Torque Limits: 35 to 55 gcm.
8. Lubricate both sides of friction spring (20) with PL-015.
9. Hold the rewind fork. Raise the rewind crank knob and turn in
the rewind direction. The clutch should engage within one half
turn,
10. To install the ASA Dial, set the SV wiper wiper pin as shown and align the "1/2"
on the exposure compensation dial with the index.
11. Check the difference in height between the rewind crank bushing and the "A"
and "B" surfaces. Install a slightly thinner washer as indicated below.
11.1. Washer (30) "A" Difference Check at four points.
Ex: Difference Washer "t"
0.15mm --- 0.1mm
0.2mm --- 0.2mm
0.1mm --- No washer
11.2. Washer (29) “B” Difference
Ex: Difference Wacher “t”
0.55mm --- 0.5mm
0.4mm --- 0.4mm
0.35mm --- No washer
Note: Numbers in parentheses in the text correspond to circled numbers
on page 6. Disassemble in normal order and reassemble in reverse
order.
Page 8
Canon NEW F-1 Service manual
Assembly and Adjustment Notes
12. SV Brush Adjustment
12.1. Set the SV (ASA.) dial to ASA 6400 -1/3.
12.2. Set the exposure compensation dial at "1".
12.3. Check the position of the brush through the P.C. terminal hole.
Note: Shining the light source (a penlight or the illuminator D or M) through the
loupe makes the brush position easier to see.
12.4. Look at the underside of the SV board to check if the brush
if the brush is positioned as shown on the ASA 6400 -1/3 pad.
Note: It must stay on the pad at both extremes of dial play.
12.5. Set the dial to ASA 6400 and check that the meter doesn't
vary suddenly either up or down.
12.6. If the adjustment is not correct adjust the SV board eccentric.
13. After installing the top cover (35), check the operation of the NORMAL-TIMER-LAMP
switch.
It should switch from one function to the next as shown.
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Canon NEW F-1 Service manual
3. Front panel unit attachment and removal
To remove the front panel unit, remove the
following parts.
1 Remove the top covers, mount
apron and bottom cover.
2 Body coverings (front)
3 Beeper plate
4 Removing the Mg2 latch lever
makes the AE joint gear easier
to remove.
5 AE Joint Gear
Position the main diaphragm lever so the
gear can be removed.
6 Tripod Socket
7 Diaphragm Stricker lever
8 Battery Chamber Cover
9 Pentaprism rails
10 Unsolder eleven leads to main
circuit board.
11 X sync contact yellow cord
12 Battery Check contact
Disassembly Notes
1 AE Joint Gear and AE Coupler
1.1 Lubricate the joint gear and
1.2 Align the raised portion of
1.3 Align the mark on the joint
2 Front Panel Unit Installation
2.1 Lubricate the marked parts of the
2.2 Wind until the curtain edge is
2.3 In this semi-wound condition,
Note: Numbers in parentheses in the text correspond to circled
numbers on page 6. Disassemble in normal order and reassemble in
reverse order.
Assembly and Adjustment Notes
Installation
coupler shafts with Astro-OilMIL-G.
the coupler gear with the
mounting screw as shown.
gear with the positioning
hole as shown.
mirror charge and signal levers (in the
body) with Lozoid.
approximately in the center of
the frame.
do not move the signal lever
(Fig. 1) or Intermediate signal
lever (Fig. 4, next page).
Page 10
Canon NEW F-1 Service manual
Disassembly Notes
13. If the SV board is to be removed,
remove the white cord from the P.C.
Assembly and Adjustment Notes
2.4 In the order shown in figure 2, set the
levers as shown in figure 3.
Terminal.
If the SV board is not going to be
removed, lift the front panel and
unsolder to white cord from the front
panel (SW16’) end.
14. Remove the plastic foam light shields
from the battery box area.
15. If the moisture seal rubber around the
main circuit board is damaged, replace
it.
Fig. 2 Fig. 3
3.1. With the levers positioned as in figure
3, install so they are between the mirror
charge and signal levers (Fig. 1. page
6).
Caution: If this operation is not done
correctly, winding timing will
be incorrect and the shutter
will not cock.
3.2. While performing the above step, it is
possible that the signal lever will get
pushed out of position. Check that the
levers are positioned as shown below.
(Another method is to hold the
intermediate signal lever toward the
mount side while installing the unit.)
3.3. While holding the body 1
latch lever out of the way, position the
1st curtain start lever toward the rear.
3.4. Put Arontite R on the threads of the
mirror striker lever screw before
installing it.
Note: Numbers in parentheses in the text correspond to circled numbers on page 6.
Page 11
st
curtain
4. Front body
Canon NEW F-1 Service manual
Numbers 1-16
Page 12
Canon NEW F-1 Service manual
Disassembly Notes
1. To remove the main circuit board (6), the
lower body flex must be moved slightly.
2. When the battery cover is removed,
temporarily replace the earth (grounding)
screw.
Assembly and Adjustment Notes
1. Apply electrolub to the connector portions
of the main circuit board (6) and lower
body flex.
2. Clean the elastic connectors (2) and (7)
with electrolub.
Assembly and Adjustment Notes
4. Clean the connector portions of the resistor
board (R Board) (9) and main circuit board
(6) (rear side) and apply electrolub.
5. Install the resistor board (9) into the body.
Put diabond on the rear of the board
around the mounting holes.
6. Battery Chamber Unit (10) Post
Installation Checks
6.1. Without a battery installed, the
swinging release rod (p/6 the battery
chamber unit) must overlap the
release pin below it by at least 1/2 the
pin diameter.
6.2. When the minus contact of the
battery box is pressed down and then
released slowly, the
rod must return completely and
smoothly.
7. Install cushion I (11) as shown below.
Push it in until it is flush against the main
circuit board and diabond it to the body.
3. Install cushion II (4) as shown below.
Note: Numbers in parentheses in the text correspond to circled numbers on
page 12. Disassemble in normal order and reassemble in reverse order.
Page 13
Canon NEW F-1 Service manual
Assembly and Adjustment Notes
8. Attach the light shield (12) and seal (13) as shown.
9. Pentaprism Contact Installation
9.1. Don't interchange the
position of the left and right
contacts, or reverse either of
them.
9.2. Solder the leads as quickly
as possible. Excessive heat will
loosen the contact pins.
10. Main Flex Installation
10.1. Solder the main flex (16) at the following positions.
10.2. To prevent the main flex from interfering with the top cover screw holes, fix it with
double-sided tape.
10.3. The brown leads to SW12 are interchangeable.
See section 9 (Upper Body)
for the correct bending of
the flex.
Note: Numbers in parentheses in the text correspond to circled numbers
on page 12. Disassemble in normal order and reassemble in reverse order.
Page 14
Canon NEW F-1 Service manual
Assembly and Adjustment Notes
11. Front Panel Lead Soldering
11.1. Put flux on the main circuit board solder lands.
11.2. Solder from the bottom up.
11.3. Dress extra lead toward the bottom as shown.
Note: Numbers in parentheses in the text correspond to circled numbers on page 12.
Disassemble in normal order and reassemble in reverse order.
Note: The thick white lead goes to the
P.C. terminal.
Page 15
Canon NEW F-1 Service manual
5. Upper Body (Winding side)
(6) can be displaced without removing (1) - (5)
Page 16
Canon NEW F-1 Service manual
Disassembly Note
1. Shutter Speed Selector
1.1. To remove the shutter speed selector
(6), unsolder the black lead from SW4
and remove four screws [(6)-1 x 2 and
(6)-2 x 2].
Notes:
1. One of the (6)-1 screws is partially
hidden by flex (5) and hard to remove.
2. Be careful not to damage the main flex.
1.2 To remove the selector (6) completely,
unsolder the black and brown leads and
disengage the tungsten cable.
1.3 To temporarily remove (6) without
removing the tungsten cable:
1) Set the shutter to the "B" position and
remove the screws. Carefully lift the
selector off.
2) Place the selector out of the way but
where the cable will remain taut and
not become kinked.
2. Mounting screw (9)-2 for the winding
base is under main switch (8).
3. The entire 2nd curtain brake assembly
(17) can be removed without
disassembling it by removing three
screws (15) and collar (16). Disengage
the brake lever from the
master gear and (17) can be removed.
Assembly and Adjustment Notes
1. The shutter speed selector (6) TV double
brushes must be aligned both vertically
and radially, so they will both make
contact with the correct pad.
2. Clean the TV resistor board (2) and install
it so that break in the pattern is at the
upper right with the shutter at "A".
Pattern break
3. Shutter Speed Selector (6)
3.1 Installation
1) Lubricate the (Upper) Rewind button lockout lever with Lozoid 72090.
3.2 Post-Installation Checks
1) Check that the see-saw lever works
smoothly.
2) There should be less than 0.2mm
difference in the height of the fixed cam
and see-saw lever.
Page 17
Canon NEW F-1 Service manual
Assembly and Adjustinent Notes
4. Winding Unit (9) Installation
4.1. Lubricate the winding coupler
joint with MIL-G.
4.2. Lubricate the friction surfaces
of the idler gear and frame
counter drive claw with Lozoid
72090.
4.3. Install with the frame counter drive claw pulled out of the way.
5. Put a little Arontite L in the Key screw (10) hole in the sprocket shaft (12) and install the
screw.
6. 2nd Curtain Cam Follower (13)-3 Installation
6.1. In the wound condition, the gap between the 2nd Curtain Cam Follower and the
hook should be 0.05 to 0.15mm. Adjustment: The follower is available in several
sizes.
6.2. Lubricate the pivot shaft with astro-oil.
6.3. The end play of the follower should be less
than 0.15mm, and it must return by the spring
pressure.
6.4. The mesh of the follower and the hook should
be 0.2 to 0.3mm. Adjustment: Eccentric
6.5. Lubricate the mesh surfaces of the follower
and hook with astro-oil.
7. 2nd Curtain Release Lever
7.1. Lubricate the shaft with astro-oil.
7.2. Thrust play should be under 0.05mm and end play under 0.2mm. Use washers to
adjust the play.
8. 2nd Curtain Brake Assembly (17)
8.1. While holding the brake lever out of the way (toward the prism rails), slip the
brake assembly (17) into place under the master gear.
8.2. Tighten the screws starting with the one at the front (mount) side.
Note: Numbers in parentheses in the text correspond to circled numbers on page 16.
Disassemble in normal order and reassemble in reverse order.
Page 18
Canon NEW F-1 Service manual
6. Tungsten cable adjustment
Assembly and Adjustment Notes
1. Put the knotted end of the cable into the slot in the indicator pulley. Charge the
pulley one revolution and temporarily install a pin to hold it.
2. Check that the cable lies correctly in the pulley.
3. Set the shutter dial at "B". Information
pulley
4. Thread the cable as shown in figure 1.
5. Remove the pin from the indicator pulley and find the spot
where the "B" appears in the finder. Temporarily fix the end as shown in figure 2.
At the point on the shutter dial pulley where the slot is a very small knot must now
be formed.
6. Tie the knot as shown below.
7. Insert the knot into the slot.
8. Put cyanobond on the knot slot. Do not get bond on the cable or in the pulley
groove.
9. Check the entire range of shutter speeds. If they are not correctly aligned in the
information window, adjust the nut on, the information pulley vertically until they
are. After adjustment, stake the nut with black diabond.
10. Check that the right-side viewfinder information disappears when the dial is moved
from 1/2000 to "A".
Check that the right-side viewfinder information appears when the dial is moved
from "A" to 1/2000 and remains visible through the entire shutter-speed range
from 1/2000 to "B".
Page 19
7. Spool
Canon NEW F-1 Service manual
Steel Balls 3,5,7,9 Lozoid 72090
Page 20
Canon NEW F-1 Service manual
Disassembly Notes
Be careful not to loose any of the bearing balls inside the camera. (See the facing
page for the number of balls in each location.)
Assembly and adjustment
1. Winding Coupler (4)
1.1 With the shutter completely wound {winding stopper engaged) , the winding
coupler should be positioned as shown (10° ± 4.5° off the body centerline).
1.2 Visual angle check: the: line formed by the axis of the winding shaft and the
mounting screw for SW5 is the maximum limit (14.5°) for the coupler.
2. Spool Torque
2.1 Lubricate the spool unit fiber friction washers with a mixture of FLA and PO A2
grease. (7:3)
2.2 Exercise the spool mechanism 30 to 50 times. Then measure the torque.
Std: 110 - 150 gcm
3. Post Assembly Checks
3.1 After the spool unit is installed in the camera the correct tension measured at
the spool circumference (equivalent to spool friction torque) 170 to 230g.
3.2 Adjust the thrust play to 0.1 to 0.3mm by changing washer (15).
4. Adjust winding shaft thrust play to 0.05 to 0.15mm by changing washer (2).
Note: Numbers in parentheses in the text correspond to circled numbers on page 20.
Disassemble in normal order and reassemble in reverse order.
Page 21
8. Sprocket
Canon NEW F-1 Service manual
Assembly and adjustment notes
1. Lubricate the upper and lower
sprocket bushings with PL-015.
2. Adjust thrust play to 0.1 to
0.2mmm with washer (8).
3. Align the toothless section of the
main gear with the stopper notch
in the sprocket shaft (3)
4. Adjust thrust play of the main gear
to 0.03 to 0.15mm bywasher (4).
5. Align the main gear (2) and idler
gear (12) as shown below and
mesh them.
Lozoid: Loroid 72090
The protuding striker section should be as
shown ±2 teeth.
Page 22
Canon NEW F-1 Service manual
9. Checks and adjustments
Assembly and Adjustment Notes
1. Shutter Curtains Installation
1.1. In the wound condition, the leading edge of the 2nd curtain should be from 5.4 to
5.9mm from the edge of the film aperture.
1.2. The leading edge should be parallel with the edge within 0.2mm.
1.3. In the wound condition, the trailing edge of the 1st curtain should overlap the
leading edge of the 2nd curtain by 2.0 to 2.5mm, and this overlap should be
maintained throughout the winding cycle.
1.4. The edge of the 1st curtain should be parallel with the edge of the 2nd curtain
within 0.2mm.
Note: The 2nd curtain "minus latch" should not latched at the full wound (5.4 -
5.9mm) position.
2. 1st Curtain Brake
2.1. Check
1) From the maximum curtain travel position* to the fully wound condition, the ratchet
should move from the start position to the middle of the third tooth.
2) Even if the brake lever is pushed in the direction to the
end of its travel the ratchet should not go to the 4th tooth,
* Maximum curtain travel position: The curtains usually stop slightly short of this position
because of the brakes. For accurate checks, they can be pushed to the maximum with the
master gear.
Page 23
Canon NEW F-1 Service manual
Assembly and Adjustment Notes
2.2. 1st Curtain Brake Adjustment
From the maximum curtain travel position, wind, release the shutter with the
seesaw lever at "B", and check the difference in the position where the curtain
stops and the maximum curtain travel position. It should be no more than halfa-tooth on the master gear.
1) To increase brake torque, turn the nut CW, but don't overtighten it. When you
reach the point where it starts to get tight, back off 90°.
2) To veaken torque, turn the nut CCW, but don't turn it too far. It should not be high
enough to touch the cam follower at the maximum follower play.
3) If the adjustment cannot be made with the nut, three different diameters
(strengths) of the coil spring are available (0.6, 0.65 and 0.7mm dia.).
4) After adjustment apply diabond to the nut. Do not use enough to increase the
height of the nut.
3. 2nd Curtain Brake
3.1 Adjustment
1) Standard: 0 to 0.5 teeth (master gear) Check as explained in 2.2 above.
The nut must not exceed the height of the shutter speed selector base.
2) Other adjustments are identical to the 1st curtain brake adjustment.
3.2 Brake Torque Check (Reference)
Measure the tension at the ratchet pawl as indicated.
1st Curatin Brake: About 2nd Curtain Brake
800g (with return spring disengaged)
Page 24
Canon NEW F-1 Service manual
Adjustment Notes
4. SW4 OFF Timing
4.1 Clean the contact surface with keton.
4.2 Slowly push the 1st curtain release lever
in the "A" direction and note where the
latch is released. Adjust the switch with
the eccentric so that SW4 goes off at 0.1
to 0.2mm additional travel.
4.3 The eccentric should be adjusted so that
longer side is toward the rear.
5. Dowel Gear Position
At the maximum curtain travel position, and with the
camera mount toward you, the dowel should be within
0.5 teeth left to 1 tooth right of the centerline.
6. SW5 Timing
6.1 Switching Position
At a point 0.8mm from the bottom of the
stopper notch on the engagement stroke
of the stopper claw, SW5 should switch on.
1) Make sure that the stopper is not
0.8mm
from the bottom of the disengagement
stroke.
2) Check the position of the drive pin.
It is different from engagement and
disengagement.
3) Do not forget to retighten the nut after
adjustment.
6.2 As a visual check of the SW5 brush position
the edge of the pattern should be located
approximately under the midpoint of the
slope "A" of the brush.
6.3 In the wound condition, SW5 must be off and
turn on during winding.
6.4 After the check is finished, stake the nut with diabond.
Page 25
Canon NEW F-1 Service manual
Adjustment Notes
7. Mechanical Release Stroke Adjustment
The shutter should release at 1.4±0.15mm of the
shutter button stroke. Adjust with the eccentric.
8. "Bulb" Pin Adjustment
Adjust so that at 1.25mm of the shutter button
stroke the
"bulb" pin and "bulb" lever are not touching.
9. Rewind Button Release Stroke Adjustment
9.1 Close the back cover. Set the rewind (R) button.
9.2 Adjust the eccentric so that the R button is released
at 1.0±(0.2mm of the shutter button stroke.
9.3 Check that the sprocket is free and turns smoothly
when the R button is set.
10. Following Needle Position
10.1 Mount the "tool standard" lens and set the diaphragm at
f/5.6.
10.2 Limit: A line "a" through the center of the following must fall
on the f/stop number (dimension "b"). The height of the
f/stop numbers is equal to 0.6 f/stops.
10.3 There must be approximately the width of the following
needle ring clearance between the outer edge of the
needle circle and the edge of the aperture scale make.
10.4 After adjustment, apply a small amount of cyanobond at
"c", "d" and "e".
10.5 Apply diabond to the root of the needle.
Page 26
Canon NEW F-1 Service manual
Adjustment Notes
11. Mechanical Shutter
11.1 Curtain Travel Time
1) Standard: 7.5±0.2ms (1/1000)(34mm slit spacing).
2) Adjustment: Spring Drum Gear
11.2 Shutter Speed (Exposure Time)
1) Adjust at 1/250 using the 2nd Curtain Release Lever (Seesaw Lever) Turning
the seesaw eccentric CW increases shutter speed.
2) Adjust 1/2000 with the 2nd curtain cam follower.
3) Adjust repeating steps 1 and 2 until the best balance of all
speeds is obtained.
4) Shutter Accuracy (measured in EV) Faster
1/2000, 1/1000: ±0.4EV
1/500 - 8 sec : ±0.2EV
12. Meter Position Adjustment
12.1 Connect a 10kohm variable resistor and microammeter in
series to the + side of the power supply set to about 2V.
Adjust the resistor for a current flow of 459uA through the
meter.
12.2 Adjust the meter housing position so that the meter needle
is centered on the "8" ±0.05mm.
12.3 Adjust the current and check the following positions:
12.4 Bond the meter housing to the die casting with black diabond. (Do not leave any
strings of bond.)
13. Battery Check and Low voltage Interlock1
13.1 Reduce the power supply voltage until the top of the
meter needle is about 0.1mm below the bottom of the
battery check index. At this point check that the
applied voltage is from 3.0 to 3.7 volts.
13.2 Check that the low voltage interlock activates at 3.2 volts.
Note: 1. Low voltage interlock is the voltage where shutter release is prevented by the
cameras program.
Page 27
Canon NEW F-1 Service manual
Adjustment Notes
14. Maximum Aperture (AVO) Indicator
14.1 Set AVO= 2.8 (Max. Aperture Pin Height =
6.9±0.03mm)
14.2 Bend the lever (dwg.) so that the top of the red
mark is positioned within the hatched area.
14.3 Check other maximum apertures. They should
also fall within 0.3 to 0.5f of the same position.
15. Aperture Mask Installation and Adjustment
15.1 The distance from the "A" surface to the
bottom of the mask opening is 2.42±0.03mm.
15.2 The distance from the "B" surface to the
bottom edge of the shutter speed opening is
2.70±0.03mm.
15.3 The distance from the C surface to the f/1.2
end of the aperture scale mask aperture is
16.2±0.1mm. When the mask is correctly
positioned, bond it with diabond.
15.4 To position the aperture scale film, install the
film with diabond, install the prism and position
the film before the bond hardens.
16. Frame Counter Adjustment
16.1 With the frame counter in the returned
position, the stop claw should be
engaged and flush against the 7th tooth
±0.1 Adjust with the eccentric.
16.2 Adjust the advance claw with the hex-head
eccentric so the tip of the claw is 0.3 to 0.6mm
up the slope of the 5th ratchet tooth.
16.3 When the advance claw is at maximum stroke,
adjust so that the clearance of the stop claw is
0.2 to 0.4mm.
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Canon NEW F-1 Service manual
Adjustment Notes
17. Following Needle Hidden Position
17.1 Activate the stop-down lever, with the lens on
or off of "A", the following needle must not be
visible.
17.2 Push the stop-down lever back into the normal
position. With the lens off of "A" the following
needle is visible. It must disappear when the
lens is set to "A".
17.3 Adjust the hex-head eccentric (dwg.) to meet
these requirements.
17.4 Following Needle Movement (Reference)
18. Release Stroke and Pressure (Checks)
18.1 Mechanical Release (without battery)
Shutter button protrusion : 1.0±0.2mm (Std: Shutter Ring)
Release Stroke : 1.4±0.2mm
Total Stroke : 1.7±0.1mm
Release pressure : Under 1,000 g
18.2 Electromagnetic Release
SW 1 ON : 0.8+0.2mm
SW 2 ON : 1.4±0.2mm
SW 1 - SW 2 Separation : At least 0.5mm
Total Stroke : 1.7±0.lmm
SW 1 Pressure : 100±20 q (except when R button
SW 2 Pressure : 350±50 g set or at "B")
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Canon NEW F-1 Service manual
Adjustment Notes
19. SW 18, X Sync Check and Adjustment
19.1 X Contact Check
When winding from the maximum
curtain travel position (MCTP), the
contact separation is 0.3mm when
the brake claw is on the third ratchet
tooth.
Also, when winding from the MCTP,
the contact drive dowel must have at
least 0.5mm total travel.
19.2 SW 18 Check and Adjustment
1) While winding slowly from the MCTP,
adjust so that SW 18 turns on when
the brake claw has traveled 2 to 2.5
teeth. Adjust by bending the fixed
contact.
2) (Visual Check)
With the brake claw at the third
tooth, check that there is at least
0.2mm separation between the drive
pin and the switch lever.
3) Apply TUFFY TF-1156 to the marked
areas in figure 1.
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