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SWITCH UNIT(X16-1540-XX)
Component
Purpose • Function
IC1
LCD DRIVER with Key Matrix
IC2
Remote Control IC
Q1
Key Detection SW
Q3, 4
Key Illumination SW
Q5
VLCD Reference Voltage Supply
Q6
Remote Control IC Power Supply Activates remote control when the base of Q6 is "L".
Q7
Dimmer SW
SYNTHESIZER UNIT(X14-6440-XX)
Component
Purpose • Function
IC1
System µ-com
IC2
E-VOL, N.C, MPX
IC3
Regulator IC for Audio 8V
IC4
Power IC
IC10
Mute logic IC
IC13
Motor driver IC
IC15
Reset IC
Q1~4
PRE OUT MUTE SW
Q18~20 Audio 8V AVR
Q21, 22 B.U 5V AVR
TE
L 13942296513
Q23
SW 5V
Q24
B.U detection
Q25
ACC detection
Q26, 27 P-ANT SW
Q28~31 P-CON SW
Q32
Dimmer SW
Q33,34,44 Illumination AVR
Q36
SW 14V
Q37,38
Motor driver supply
Q39
External Amp Control
Q41, 42 Cassette mecha main motor supply SW Q42 is turned ON when Q41's base goes "H".
Q43
Motor driver's voltage SW
Q45,46
Panel 5V SW
Q71
Pre out mute driver
Q72
E-VOL Mute SW
Q73
Noise buffer
Q85
IFC out buffer
Q86,88
AM+B SW
Q87,89
FM+B SW
DOLBY UNIT(X87-3022-71)
Component
Purpose • Function
IC1
Playback EQ, Dolby & Blank Detection
Q1
Constant Switching in Blank Detection Switches the time constant according to the PLAY or FF/REW mode.
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COMPONENT DESCRIPTION
Q2 starts key scan in M&T.
Lights key illumination in Red when the base of Q3 is ON.
Lights key illumination in Green when the base of Q4 is "H".
Constant voltage circuit.
The base of Q7 is normally "H" but becomes "
Pre outs are muted when the base goes "H".
Inverted darlington connection
Q20 is turned ON when Q18's base goes "H".
Inverted darlington connection
Q22 is turned ON when Q21's base goes "H".
ON when the base goes "L".
ON when the base goes "H" during B.U applied.
ON when the base goes "H" during ACC applied.
Q26 is turned ON when Q27's base goes "H".
Q28 is turned ON when Q31's base goes "H".
ON when the base goes "H" while vehicle small lamps turn on.
ON when Q44's base goes "H".
ON when base goes "H".
Q38 is turned ON when Q37's base goes "H".
ON when the base goes "L".
Base "H" ··· cassette mecha's submotor
Base "L" ··· mask mecha's motor.
Q45 is turned ON when Q46's base goes "H".
ON when the base goes "L".
ON when the base goes "H".
Q88 is turned ON when Q86's base goes "H".
Q89 is turned ON when Q87's base goes "H".
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2 9
8
Operation • Conditions • Compatibility
Operation • Conditions • Compatibility
Q Q
3
6 7
1 3
1 5
Operation • Conditions • Compatibility
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KRC-535/865
9 4
2 8
" when DIMMER is ON.
0 5
8
2 9
9 4
2 8
m
9 9
9 9
3
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