Canon EOS 7 Service Manual page 100

<Mechanical-Related Errors>
Error No. Error
03 Mirror-up
operation error
04 The diaphragm
does not stop
down.
05 A lens
communication
error prompted
shutter release.
06 During the mirror-
up operation at
shutter release,
CN2 turned OFF.
07 CN2 does not turn
OFF after shutter
release.
08 X signal turned ON
during mirror-up
operation.
09 (Blank)
10 The diaphragm
does not open.
11 Faulty mirror-down
operation.
12 The built-in flash
does not pop-up.
(Faulty POPEND
signal.)
13 X signal does not
turn ON at shutter
release.
Condition
q The mirror-up completion signal (CMSP) is not
established within the stipulated time after the start
of mirror-up operation (M1 motor runs in reverse).
w The mirror-up completion signal (CMSP) is not
established before the shutter runs (mirror
stablization timer end & shutter release time lag
stabilization timer end & diaphragm drive end)
during shutter release.
The maximum aperture SW is still open even after the
diaphragm is driven for the stop-down operation
during shutter release.
Shutter release occurred with a lens communication
error.
The CN2 signal turned OFF (2nd curtain travel
completed signal) before the shutter traveled (mirror
stablization timer end & shutter release time lag
stablization timer end & diaphragm drive end) during
shutter release.
The CN2 signal does not turn OFF (2nd curtain travel
completed signal) within 30 ms after the exposure
operation ends (MG32 conduction turns OFF).
The X signal (1st curtain travel completed signal)
turned ON before the shutter traveled (mirror
stablization timer end & shutter release time lag
stablization timer end & diaphragm drive end) during
shutter release.
When the diaphragm supposed to return to the
maximum aperture after the exposure, the maximum
aperture SW still indicates stop-down even after the
diaphragm is driven to open again.
q The mirror-down completion signal (CMSP) is not
established within the stipulated time after the start
of mirror-down operation (M1 motor runs in
reverse).
w The mirror-down completion signal (CMSP) is not
established before the film advance (after the film
advance start timer ends) during shutter release.
The pop-up signal (POPEND signal) does not arrive
even after trying to pop up (M2 motor running
forward) the built-in flash twice.
The X signal does not arrive within the stipulated time
after the exposure operation (after MG32 conduction
ends).
2-33
Part 2: Technical Information
Probable Cause
Faulty front plate.
Faulty front plate
(overrun).
Lens maximum
aperture SW is
faulty.
The lens is not
properly attached.
Faulty shutter
system.
Faulty shutter
system.
MG32 wire
disconnected.
Faulty shutter
system.
Lens maximum
aperture SW is
faulty.
Faulty front plate.
Faulty front plate
(overrun).
Built-in flash's
pop-up system is
faulty.
Faulty shutter
system.