Internal Construction - Canon EOS 7 Service Manual

Part 2: Technical Information
1.9 I
NTERNAL
(1) Covers
The camera's covers consist mainly of the top
cover, bottom cover, front cover, camera back, and
grip. The top, front, and flash head covers have a
double-walled construction with 0.8mm-thick
aluminum on the outside and an inner cover made
of engineering plastic. The aluminum covers have a
black alumite finish.
(2) Internal construction and components
The camera body and front cover are made of
engineering plastic which boasts high strength and
precision. The major components are housed
within. Figure 2-23 shows the location of the main
components, and Table 2-10 lists the parts count.
Flash pop-up mechanism
Five-point horizontal SI unit
LCD panel
Main Dial
Main capacitor
Quick-Return mirror
driving mechanism
Shutter speed
control mechanism
Lithium CR123A
batteries
Part
Electrical Parts
Mounted Components
Mechanical Parts
Screws & Washers
Optical Elements
Total
Official Total
G The shutter, pressure plate, M1, and M2 all count as one part each.
G The official total does not include the number of screws and washers.
C
ONSTRUCTION
Hot shoe
Built-in flash unit
M1
M2
AF unit
Fig. 2-23 Location of Major Components
EOS ELAN 7 E DATE
EOS 30 E DATE
260
77
330
147
21
835
688
Table 2-10 Parts Count
Top cover
Metering sensor
Eye Control detection sensor
Pentaprism
Command Dial
Viewfinder LCD
Focusing screen
Main reflex mirror
Secondary mirror
DX code detector
Two-point vertical SI unit
Film rewind mechanism
TTL autoflash sensor
Electronic mount and information transmission signal contacts
EOS ELAN 7 E EOS ELAN 7 DATE
EOS 30 EOS 33 DATE
257 251
73 77
311 322
145 147
21 19
807 816
662 669
2-20
Flash cover
Top cover
Front cover
Fig. 2-22 Covers
EOS ELAN 7
EOS 33
248
73
303
145
19
788
643