• Verify the AC plug is securely connected.• Check the wall outlet with another device.• Contact an authorized JBL center to check the fuse.
Comprehensive output options are documented, including PRE OUT, SUB OUT (for subwoofers), REC OUT (for recording), and MUSIC OUT. jbl rma 220 user manual
Offers an 11-step music key adjustment (±5 tones), allowing singers to match the music to their vocal range. • Verify the AC plug is securely connected