Residual Battery Display; Serial No. Location - Canon EOS 20D Service Manual

Repair Information

1.3 Residual Battery Display

Tool: Use a tools battery.
Power: Set the constant voltage 8.0[V].
(1) Insert the tools battery into the camera.
(2) Turn on the main SW.
(3) Raise supply voltage gradually so that the display switches from one to
another.
Fig. 011

1.4 Serial No. Location

This number is used in various information such as service manual reports
after the product release. In particular, when a part is replaced with the
service part, the serial number is not reflected. Therfore, be sure to copy the
forth and fifth digit of the serial number on the surface of TFT holder unit
base inside the camera.
±
7.40 0.10 V
±
6.50 0.10 V
Fig. 012
4
01
Fig. 013