Advertisement
Ref No.
Application / Functions
IC5
System IC
IC6
Audio control IC
IC7
Power supply IC
IC8
Reset IC
IC9
Muting logic IC
IC10
Buffer IC
IC11~13
OP AMP
IC14
RDS decoder
IC15,16
Motor driver
IC18
P-CON IC
IC19
Power supply IC
IC20
Analog SW
Q1,2
BU 5V AVR
Q3,601
SW5V AVR
Q4,5
SW14V AVR
Q6~8
Audio 8V AVR
Q9,602
Servo +B AVR
Q11~14
Illumination & DC/DC +B AVR
Q15,16
Audio 10.5V AVR
Q17~19
Pre Amp & -9V AVR
Q20~22
Pre Amp & +9V AVR
Q23,24
P-ANT SW
Q25
Buffer
Q26
Small lamp det. SW
Q27
BU detector
Q29
ACC detector
Q30,31
Muting driver
Q201
Buffer
Q202
E-VOL muting SW
Q203~208
Pre-out muting SW
Q210
AGC
Q303,304
AM +B SW
Q305
Buffer
Q501
E2P 5V SW
Q502,503
Panel 5V SW
Q603
SW
COMPONENTS DESCRIPTION
For System E's control
For WOW/FOCUS control
-9V AVR (For 4.5V Pre-out)
When BU5V line voltage is less than 3.5V, this IC output line is "L"
Control for MUTE, P-ANT & RESET muting
For spectrum analyzer
For 4.5V Pre-out
Decode for RDS signal
Control for Panel mechanism motor
Power control IC
Switching regulator IC for CD4.7V
Control for WOW/FOCUS IC (IC4)
While BU is applied when BU5V regulator output is +5V
When Q601base level goes H, SW5V regulator output is +5V
When Q5 base level goes H, SW14V regulator output is +14V
When Q6 base level goes H, A8V regulator output is +8.3V
When Q602 base level goes H, S+B regulator output is +7.5V
When Q11 base level goes H, AVR output is +9.2V
When Q16 base level goes H, AVR output is +10.5V
Q18,19 work as differential amplifier, Q17 wark as driver and -9.1V is supplied to
OP AMP for Pre-out
Q20,22 work as differential amplifier, Q21 wark as driver and +9.4V is supplied to
OP AMP for Pre-out
When Q23 base level goes H, P-ANT SW output is +14V
EX amp control buffer
When Q26 base level goes H, Q26 turned ON
When Q27 base level goes H, Q27 turned ON
When Q29 base level goes H, Q29 turned ON
When base level goes L, muting driver is turned ON
Noise detect buffer amp
When Q202 base level goes H, muting SW is turned ON
When base level goes H, Pre-output is muted
For AGC for spectrum analyzer
When Q303 base level goes H, AM +B is out to tuner unit
Composite signal buffer for RDS
When Q501 base level goes L, E2P 5V is out for E2PROM
When Q503 base level goes H, Panel 5V is out
When Q603 base level goes H, Q603 is turned ON
KDC-X879
Operation / Condition / Compatibility
5
Advertisement
