Pioneer VSX-420-S Operating Instructions Manual page 90

CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
D3-4-2-1-1_A1_Ru
D3-4-2-1-3_A1_Ru
D3-4-2-1-7b*_A1_Ru
D3-4-2-1-4*_A1_Ru
D3-4-2-1-7a_A1_Ru
K041_A1_Ru
D3-4-2-1-7c*_A1_Ru