Components Description - Kenwood KAC-6404 Service Manual

● AUDIO UNIT (X09-8722-70/2-71)
Ref. No.
IC1-4
IC5
IC7
IC8,9
IC10
IC13
Q1,2,5,6
Q3,4
Q7-10
Q11,12
Q101,102,201,202
Q103-106,203-206
Q107-110,207-210
Q111,112,211,212
Q113,114,213,214
Q115-118,215-218
Q119-122,219-222
Q123-126,223-226
Q127,128,131,132,227,228,231,232
Q601
Q602,603
Q604-606
Q607
Q610
Q611-614
Q615-618

COMPONENTS DESCRIPTION

Isolation circuit
LPF Phase inversion
HPF
Buffer amplifi er
Temperature detection comparator
DC/DC converter
DC/DC converter power driver
Constant voltage circuit (±15V) power driver
DC/DC converter gate driver
DC/DC converter control
Signal mute
Differential fi rst stage amplifi er
Differential second stage amplifi er
Differential second stage current mirror
Idling temperature detection
Current limiter
Power amplifi er driver
Power amplifi er fi nal
Protector ATT
Shock noise prevention circuit control
Mute circuit control
P-Con control
FAN power supply drive
Over current detection
DC protector control
Shock noise prevention circuit control
KAC-6404/7404/M645/M845
Application / Function
3