Power Current Consumption; Residual Battery Display; Current Consumption Standards - Canon EOS 5D Service Manual

1.2 Power Current Consumption

Current Consumption Standards

Lens: EF 50mm f/1.8
Power source: Constant voltage 8.0 V, 0.40 Ω (No CF card installed)
Ambient conditions: Room temperature, normal humidity (below 60%)
Camera Status
Standby
Lock
SW1-ON
＊ The Actual Measurement data is taken from the initial lot of mass production cameras. It may differ slightly with
subsequent lots.
＊Standby means the condition where the camera stands by while Main SW is on.
Constant-Voltage
Power Source
+
-

1.3 Residual Battery Display

Tool: Use a tool battery.
Power: Set the constant voltage to 8.0[V].
⑴Insert the tool battery into the camera.
⑵Turn on the main SW.
⑶ With SW1-On, slowly reduce the supply voltage gradually so that the display changes
through the battery indications and check that the switch points are within the specified
limits.
7.88±0.2 V
7.68±0.2 V
7.38±0.2 V
Fig. 011
Standard
150mA or lower
100 A or lower
400mA or lower
Digital MM or other
ammeter
+ -
Fig. 010
3
Repair Information
Actual Measurement
Approx. 50mA
Approx. 41.4 A
Approx. 111mA
Tool battery
To camera