Current Consumption; Residual Battery Display - Canon EOS 40D Service Manual

1.2 Current Consumption
Current Consumption Standards
Lens: EF 50mm f/1.8 II
Power source: Constant voltage 8.0 V, 0.40Ω. (No CF card installed)
Ambient conditions: Room temperature, normal humidity (below 60%)
Camera Status
Main SW off
SW1-ON
Self Timer operation
Red-eye Lamp operation
AF Search operation
Standby
Self-Cleaning Function ON
＊ T he "Actual Measurement" data was based on rough measurement. Therefore, be sure to refer to average data of
multiple cameras at each repair site.
＊Standby means the condition where the camera is inactive, but the Main SW is on.
Constant-Voltage
Power Source
+
-
1.3 Residual Battery Display
Tool: Use the tool battery and resistance part.
Power: Set the power supply to 8.0V.
⑴Insert the tool battery into the camera.
⑵Turn on the main SW.
⑶ R aise supply voltage gradually and release the camera within each
voltage range to check if the display switches from one to another.
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Standard
100 A or lower
350mA or lower
550mA or lower
600mA or lower
500mA or lower
100mA or lower
650mA or lower
Digital tester or
other ammeter
+ -
Fig. 006
3
Repair Information
Actual Measurement
45.52 A
116.46mA
155.33mA
179.6mA
274.4mA
39.8mA
420.4mA
Tools battery
To camera
Fig. 007
7.8±0.1 V
7.5±0.1 V
7.1±0.1 V