Kenwood KRC-535, Руководство по обслуживанию

Страница: 3 / 24

KRC-535/865
3
COMPONENT DESCRIPTION
●
SWITCH UNIT(X16-1540-XX)
Component Purpose • Function Operation • Conditions • Compatibility
IC1 LCD DRIVER with Key Matrix
IC2 Remote Control IC
Q1 Key Detection SW Q2 starts key scan in M&T.
Q3, 4 Key Illumination SW
Lights key illumination in Red when the base of Q3 is ON.
Lights key illumination in Green when the base of Q4 is "H".
Q5 VLCD Reference Voltage Supply Constant voltage circuit.
Q6 Remote Control IC Power Supply Activates remote control when the base of Q6 is "L".
Q7 Dimmer SW The base of Q7 is normally "H" but becomes " " when DIMMER is ON.
●
SYNTHESIZER UNIT(X14-6440-XX)
Component Purpose • Function Operation • Conditions • Compatibility
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 Pre outs are muted when the base goes "H".
Q18~20 Audio 8V AVR
Inverted darlington connection
Q20 is turned ON when Q18's base goes "H".
Q21, 22 B.U 5V AVR
Inverted darlington connection
Q22 is turned ON when Q21's base goes "H".
Q23 SW 5V ON when the base goes "L".
Q24 B.U detection ON when the base goes "H" during B.U applied.
Q25 ACC detection ON when the base goes "H" during ACC applied.
Q26, 27 P-ANT SW Q26 is turned ON when Q27's base goes "H".
Q28~31 P-CON SW Q28 is turned ON when Q31's base goes "H".
Q32 Dimmer SW ON when the base goes "H" while vehicle small lamps turn on.
Q33,34,44 Illumination AVR ON when Q44's base goes "H".
Q36 SW 14V ON when base goes "H".
Q37,38 Motor driver supply Q38 is turned ON when Q37's base goes "H".
Q39 External Amp Control ON when the base goes "L".
Q41, 42 Cassette mecha main motor supply SW Q42 is turned ON when Q41's base goes "H".
Q43 Motor driver's voltage SW
Base "H" ··· cassette mecha's submotor
Base "L" ··· mask mecha's motor.
Q45,46 Panel 5V SW Q45 is turned ON when Q46's base goes "H".
Q71 Pre out mute driver ON when the base goes "L".
Q72 E-VOL Mute SW ON when the base goes "H".
Q73 Noise buffer
Q85 IFC out buffer
Q86,88 AM+B SW Q88 is turned ON when Q86's base goes "H".
Q87,89 FM+B SW Q89 is turned ON when Q87's base goes "H".
●
DOLBY UNIT(X87-3022-71)
Component Purpose • Function Operation • Conditions • Compatibility
IC1 Playback EQ, Dolby & Blank Detection
Q1 Constant Switching in Blank Detection Switches the time constant according to the PLAY or FF/REW mode.
www. xiaoyu163. com
QQ 376315150
9 9
2
8 9
4 2
9 8
TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299