Sanyo AVM-2550S Training Manual page 10

IC801
CPU
R1910
9
R1902 R1903 R1904
R1901
SW1901 SW1902
(POWER) (VOL + )
Key Scan Circuit
R1905 R1906
SW1903 SW1904 SW1905
(VOL – ) (CH ) (CH
– 7 –
ALWAYS
5V
R1907
L1901
SW1906
)
(MENU)
C1902
D1901
(7.5V)