Kenwood KR-A4060 Service Manual page 9

KR-A4060/A5060
CIRCUIT DESCRIPTION
* Destination set switch : E/K type (D908 to Q903)
Destination | Desti- BAND Reception Channel |Reference|
set switch | nation frequency band space | frequency
K
531~1602kHz
2-3. Pin function
¢ Specification set switch :
AM 1700k/AM 1610k (D924)
With destination set switch at "0" :
Effective only for K type
Specification set switch AM reception frequency band
ae aaa 530~1610kHz
§30~1700kHz
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Function
Volume down operation control. ("H" : Down, "L" : Normal state)
Backup (AC outlet OFF) detection. ("H" : Normal state, "L" : AC outlet off)
Remocon signal input. (Active "L")
Key return signal input.
("H" : There is input, "L" : There is not input)
Key scan signal output. Normally high is output. Key scan is performed when key is ON.
Not used.
Data latch signal output to NJU7311L/NJU7313L. Data is latched on the rising edge.
LM7001 (PLL IC), NJU7311L/NJU7313L (selector IC) control serial data output.
Data is latched on the rising edge of the clock.
LM7001, NJU7311L/NJU7313L control serial data transfer shift clock output.
ata is latched on the rising edge of the clock.
E signal output to LM7001. When the signal is high, LM7001 is enable.
Power supply circuit relay ON/OFF control. ("H" : ON, "L" : OFF)
TAPE 2 REC OUT mute control. ("H" : MUTE OFF, "L" : MUTE ON)
LINE OUT mute control. ("H" : MUTE OFF, "L" : MUTE ON)
Not used.
Tuner tuned detection. ("H" : No signal, "L" : Tuned)
Tuner FM stereo detection. ("H" : MONO, "L" : STEREO)
This pin and serial data pin 59 are shorted.
Serial busy signal input/output.
GND
Fluorescent display segment drive signal output. (Pin 40 muted)
Not used.
Fluorescent display digit drive signal output.
Fluorescent display output driver circuit power supply.
Not used. This pin and GND are shorted.
This pin and serial data input pin 30 are shorted.
Clock generation circuit output pin.
Clock generation circuit input pin.
Reset signal input.
Volume up operation control. ("H": UP, "L" : Normal state)
+5V power supply.