Integrated Circuit Replacement And Adjustment - Canon A-1 Repair Manual

4. Integrated Circuit Replacement and Adjustment
( I..)
IC replacement and adjustment is basically the same as
with the AE-l, with some differences . Refer to the AE-I
Repair Guide. The OPT offset adjustment is the same as
the PX-l offset adjustment of the AE-l; but the osillator
adjustment of the OSC/Interface IC and the AD/NULL adjust-
ment of the Input IC directly affect the finder display
and shutter timing and flash synchronization. They should
be checked well whenever an IC 1s changed.
IC Removal and Replacement Tool
This soldering aid is simple to build and use . It greatly
reduces repair caused failures. We recommend that each
shop make at least one of each.
emoval End
IC Installation End
~~~~~~~~~~::~~~~~
Copper Plate
, Note: The taper makes the tool easier
J .,
L.
to insert under the flex.
Fig. 4-1
Copper Plate Dimensions:
14.0 x SS.0;t",,0.3mm
~
CPU
INPUT OSC
L,
20.0 1 • . 0
(L. )
5.5
3.0
rr
r-
J •• -
I
L.
I ••
I I
5
9.0
M
2.0
- .
' r-
L.
8.0
1i0
j
e,
I 5.0
I I 0
I
e.
9.0
5.0
e,
M <.S
( t
.J
0.5 0. 5
I •
I 5 15
'--_-'I~.:
IC Installation End
IC Removal End
I ,
3.(J
3.0
Unit: mm
83