Kenwood KR-609, Руководство по обслуживанию

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KRC-609,679R/RY,781R/789
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COMPONENT DESCRIPTION
REF
FUNCTION OPERATION
No.
Q1-4 PREOUT MUTE SW Preouts are muted when the base level goes "H".
Q17,20 AUDIO 8V AVR Q20 is turned on when Q17's base level goes "H".
Q18 PANEL 5V SW Q45 is turned on when Q18's base level goes "H".
Q21,22 B.U. 5V AVR Q22 is turned on when Q21's base level goes "H".
Q23 SW 5V ON when the base level goes "L".
Q24 BACK-UP DETECTION ON when the base level goes "H" during the back-up works.
Q25 ACC DETECTION ON when the base level goes "H" during the ACC works.
Q26,27 P-ANT SW Q26 is turned on when Q27's base level goes "H".
Q28-31 P-CON SW Q28 is turned on when Q31's base level goes "H".
Q32 DIMMER SW ON when the base level goes "H" while vehicle small lamps turn on.
Q33,34 ILLUMINATION AVR ON when Q44's base level goes "H".
Q35,36 SW 14V Q36 is turned on when Q35's base level goes "H".
Q37,38 MOTOR DRIVER POWER SUPPLY Q38 is turned on when Q37's base level goes "H".
Q39 EXTERNAL AMPLIFIER CONTROL ON when the base level goes "L".
Q40 ILLUMINATION AVR ON when Q44's base level goes "H".
Q41,42 MOTOR SW Q42 is turned on when Q41's base level goes "H".
Q44 ILLUMINATION AVR ON when Q44's base level goes "H".
Q45 PANEL 5V SW Q45 is turned on when Q18's base level goes "H".
Q71 PREOUT MUTE DRIVER ON when the base level goes "L".
Q72 E-VOL MUTE SW ON when the base level goes "H".
Q73 NOISE BUFFER
Q86,88 AM+B SW Q88 is turned on when Q86's base level goes "H".
Q87,89 FM+B SW Q89 is turned on when Q87's base level goes "H".
Q90 COMPOSITE OUTPUT BUFFER
Q92 IFC BUFFER
Q95 MSTC SW Q95 is turned on when MS mode level goes "H".
IC1 SYSTEM u-COM
IC2 E-VOL / NOISE CHANCELLOR / MPX
IC4 POWER IC
IC10 MUTE LOGIC
IC11 RDS DECODER
IC13 MOTOR DRIVER
IC15 RESET
IC16 DOLBY
SYNTHESIZER UNIT (X14-xxxx-xx)
REF.
FUNCTION OPERATION
No.
Q1,2 KEY DETECTION SW
Q1 is to start the key scan for the SRT.
Q2 is to start the key scan for the M&T.
Q3,4 KEY ILLUMINATION SW
Lights red key-illumination when Q3's base level goes "H".
Lights green key-illumination when Q4's base level goes "H".
Q5 LCD REFERENCE VOLTAGE SUPPLY Stabilises voltage circuit.
Q6 REMOTE IC POWER SUPPLY Remote controller works when the base level goes "L".
Q7 DIMMER SW
Usually the base level is "H". During the dimmer on, the base level
goes "H" and "L" repeatedly in a moment.
IC1 LCD DRIVER
IC2 REMOTE SENSOR
SWITCH UNIT (X13-xxxx-xx)
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