Kenwood KC-Z1 Service Manual page 9

QQ
3 7 63 1515 0
1-3. Key matrix (12KEY + 4 SW)
74 KR0
78 KS0 LD
79 KS1 CD
80 KS2 MD
81 KS3 DSW0
*No. of : Port No. of µ-COM
1-4. Destination list of tuner
Destination BAND
FM
K1
AM
FM
K2
(M)
AM
2. Sub microprocessor : 78P058GC1ACA (X08:IC50)
2-1. Microprocessor periphery block diagram
(X08) IC63
TE
L 13942296513
ADC
PD
(X08) IC21~26
DAC
DEMO, DEMI, PD
(X08) IC75
DEMO-
DULATOR
RESET , MSYC
(X08) IC47
ZR38500 (AC-3/DSP)
SS , SO , SI ,
www
SCK , RESET
(X08) IC77
.
DIR
ERROR, SUB1, SUB2,
SWDT,XLAT, SCLK,
SRDT, XMODE,ENPHA
CIRCUIT DESCRIPTION
75 KR1 76 KR2 77 KR3
TV CABLE VCR
BEEP MUTE POWER
TAPE 1 TUNER PHONO
DSW1 DSW2 DSW3
Table 5-1 Destination List of Tuner
Receive frequency
range
87.5MHz~108.oMHz
530kHz~1700kHz
87.5MHz~108.0MHz
530kHz~1610kHz
(X00) IC31
MAIN U-COM
MCK, MDT, SDT,
MREQ
x ao
y
(X09) Q43
i
MUTE
SUBMUTE , SWMUTE
8
channel
IF reference
space
frequency
100kHz 10.7MHz
10kHz 450kHz
100kHz 10.7MHz
10kHz 450kHz
(X08) IC78
Q Q
3 6 7 1 3
DIGITAL SW
DIGSWSEL
(X08)
IC50
SUB U-COM
78P058GC1ACA
u163
(X08) IC66
.
SELECTOR
DIGSEL1, DIGSEL2
2 9 9 4 2 8
Destination DSW(X14-)
PLL
D S W 2 D S W 1
50kHz
0
10kHz
50kHz
0
10kHz
0 : Non Diode
1 5 0 5 8 2 9
(X08) IC1~6
LPF
LPFDT, LPFCK,
LPFSTB
(X08) IC41, 42
DSP
RESET , REQUEST,
READY, DATA, CLOCK
ACUNOLIGE
m
co
DESTINATION SW
H : KC-Z1
L : KR-V990D
9 9
D S W 0
(X00)D47
0 0
0 1
1 : Diode
9 4 2 8 9 9