There is often a small battery inside the unit or accessed from outside that holds the memory that the device was last set. Yours is defaulting to maximum zoom. And in fact it does.
Built-in Clock's Rechargeable Lithium Battery
To store the date/time in memory, the clock's rechargeable
lithium battery is integrated in the camcorder. While the
camcorder is connected to an AC outlet using the AC
Power Adapter/Charger, or while the battery pack attached
to the camcorder continues to supply power, the clock's
rechargeable lithium battery is always charged. However,
if the camcorder is not used for approx. 3 months, the
clock's lithium battery will become discharged and the
date/time stored in memory will be lost. When this occurs,
first connect the camcorder to an AC outlet using the AC
Power Adapter/Charger for over 24 hours to charge the
clock's rechargeable lithium battery. Then perform the
date/time setting before using the camcorder.
Note that the camcorder can be used without setting the
Your manual in English. You can use a smartphone with Google translate and the camera feature to read what is shown on the camera in Japanese and change the operating language to English.