Canon SPEEDLITE 540EZ Service Manual page 15

Part 1: General Information
14. Power switch
15. Power source
16. Connectors
Lh.
18.
Dimensions
Weight
Three-step slide switch: OFF (O mark), ON (I mark) and
SE (Save Energy).
ON: Always ON without SE.
SE: When switch is ON, power is automatically turned off
after about 90 seconds idling.
As soon as the SE function is activated, the LED goes
out (the set mode is stored in memory). The power is
turned on again by pressing the shutter button of the
camera to the first step or pressing the test flash but-
ton. (Compatible with flash photography when using
the interval timer function of the Technical Back E.)
(1) Built-in power source
(a) Four AA-size alkaline cells LR6 (AM-3)
(b) Four AA-size Ni-Cd cells
* Four AA-size lithium cells (FR-6)
(2) External power sources
(c) AA-size alkaline-manganese cells LR6 (AM-3) x 6 -
9 V (Compact Battery Pack E)
(d) Laminated battery (0210 type 315V) (Laminated
Pack E315)
(e) Battery magazine TP (C-size alkaline cells LR14
(AM-2) x 6 - 9 V) (Transistor Pack E)
(f) Ni-Cd pack TP (NR-SC Ni-Cd cells x 6 in sealed
pack) (Transistor Pack E)
(1) Camera connector
1) Fixed accessory shoe screw lock type with a lock
screw tightening coupled lock pin
* The lock pin protrudes 1.6mm by the spring force
coupled with tightening.
2) Terminals: Direct-coupled 6-pin contact
(2) External power connector: Dedicated 3-pin socket.
80 (W) x 138 (H) x 112 (D)mm
405g
(LR6 batteries: +100g)