KAC-PS521/X521
3
Ref. No
Application / Function
Operation / Condition / Compatibility
IC5
H/U communication buffer
IC6
Microprocessor
IC7
Reset IC
IC8
E2PROM
IC9
Current detection
IC10
Isolation amplifier
Q50
5V AVR
Q51~54
DC/DC output driver
Q55~60
DC/DC
Q61
+15V AVR
Q62,63
-15V AVR
Q64,65
DC/DC converter (IC2) ON/OFF
Controlled by microprocessor
Q66,68
5V AVR
Q69
5V AVR ON/OFF
Q70,71
Power supply detection
Q81
+15V AVR
Q91,92
When P-CON is OFF, DC/DC driver stop speedy
Q97
AMP communication stability power supply
Q101,102
Mute
Q103~112
A class first stage amplifier
Q113~118
A class 2nd stage amplifier
Q119,120
Final temperature compensation
Q121~124
Amplifier current detection
Q125~132
Final driver
Q133~140
Final
Q141
Mute control
Q142~145
Amplifier limiter
Q146,147
Amplifier current detection
Q148,149
DC detection
Q301~307
H/U communication output driver
Q313
H/U communication output driver
Q314
H/U communication ON/OFF
Q341~344
H/U communication input driver
Q346
H/U communication output driver
Q347~349
AMP and H/U communication ON/OFF control
Q351,352
BATT voltage output
Q353~358
Fan stability power supply
Q403
LCD backlight LED control
Q404
LED control
COMPONENTS DESCRIPTION
