Canon C12-8453, Service Manual

Page: 121 / 271

<D
ISASSEMBLY AND
R
EASSEMBLY
N
OTES
>
• When the AF unit is removed, the position relative to the focusing screen must be
adjusted.
• If the TTL flex or TTL lens has been
removed for replacement, etc., eliminate
play by positioning it in the direction of the
arrows, then apply Diabond 1663G Black
on the top and bottom.
• As shown in the right figure, after setting
the contact plate and the phase board’s
lead wires, fix with Diabond 1663G Black.
Note that if you pull the contact plate’s lead
wires too much, it will not operate properly.
Be sure to check that the pins work.
• Check that there is no difference in exposure level before and after the focusing
screen replacement. If the difference is large, carry out the AE adjustment.
• To replace the focusing screen, unhook the both side of the focusing screen holder.
Be careful not to damage the focusing screen, and after replacement, check that
the focusing screen is assembled properly.
Part 3: Repair Information
3-17
: AF unit 1 NOTE
: Gluing TTL flex and TTL lens in place 2 NOTE
: Fixing the contact plate and phase
board lead wires in place
3 NOTE
: Focusing Screen Replacement
3
CAUTION
Fig. 3-27 TTL lens fixing
Apply Diabond 1663G Black
on the top and bottom
Eliminating TTL lens play
Fig. 3-28 Bottom of front panel
Lead wire fixing with
Diabond G Black