KENWOOD KRC2902G
Service Manual

KRC-2902YA/G
COMPONENTS DESCRIPTION
q SYNTHESIZER UNIT (X14-6872-73)
Ref.No.
IC1 IC2 IC3 IC4 IC5 IC6 Q49 Q50 Q51,52 Q53 Q54,55 Q56,57 Q58,59 Q60,61 Q150 Q151 Q201 Q203 Q260 Q261 Q301 Q320 Q350 Q351 Q352 Q353

Function
SYSTEM µ-COM E -VOLUME M UTE LOGIC POWER AMPLIFIER EQUALIZER AMPLIFIER RESET A CC DETECTION SW BACK-UP DETECTION SW BACK-UP 5V DRIVER P.ON 5V SW 8V SW 8V DRIVER ILLUMI +B SW ILLUMI +B DRIVER E-VOL MUTE SW Controls the unit. Controls the volume and selects source. Controls the mute output. For the speaker output. For the cassette tape's signal. Resets the power. Outputs "H" during the ACC off.

Operation

Outputs "H" when the back-up voltage is under 9.2V. Works when back-up current exists. Works during the power on. Works during the power on. Works during the power on. Works during the power on. Works during the power on. Works when the back-up current is detected or the changer mute works or system µ-com mute works.

SVR FORCED DISCHARGE SW Works when the amplifier mute works. FM +B SW AM +B SW MOTOR +B SW MOTOR +B DRIVER CD-CH RESET SW PANEL 5V SW P.CON DRIVER SW P.CON PROTECTION SW Works during FM mode. Works during AM mode. Works during the tape mode. Works when Q206 works. Works when the power is reset and the reset SW works. Works when the back-up current exists and the panel is attached on the unit. Does not work during the power off and the ALL OFF. Works when the P.CON is short-circuited on the GND.

P.CON PROTECTION INHIBIT SW Inhibits the protection SW in a moment during the P.CON on. P.CON DRIVER SW Does not work during the power off and the ALL OFF.

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