5. PREPARATION AND FUNCTIONS
RL-SV1S (Rechargeable battery type)
• How to install the battery pack
1Insert the battery pack BT-74Q into the DB-74C
battery holder in the direction shown in the
diagram on the right.
2Install the battery holder. Tighten the battery
cover knob to "LOCK" side.
• How to remove the battery pack
1Remove the DB-74C battery holder by turning battery holder
knob to "OPEN" side.
• It is possible to remove the battery pack BT-74Q from the DB-
74C battery holder and use the dry cell batteries.
Grasp the specified place on the battery holder, which is shown below,
and remove the battery pack.