Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Entertainment Systems: Service and Repair

Wireless Headphone Battery Replacement




1. Remove the battery cover (A) from the wireless headphone and lift the covers.
2. Remove the battery (B) from the wireless headphone.

Replacement Battery Size AAA




3. Turn the left speaker (A) and confirm that the indicator (B) comes on after the battery is replaced.