Kenwood CD-223M Service Manual page 6

CD-223M/224M/DPF-J3010/J5010
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3 7 63 1515 0
1-2 Pin description
Pin No. Pin Name
1* A16
1 A2
2* A17
2 NC
3 S3-SW
4 S2-SW
5 RD
6 WR
7 S1-SW
8 ASTB
9 VDD
10 +5VPUL
11* RTRN
11 RTRN
12* RWR
12 RWR
13* RWRR
13 RWRR
14-21* L-D0-D7
14-21 L-D7-D0
TE
L 13942296513
22 TEST
23 DISC-SW
24 ROTARY-CW
25 ROTARY-CCW
26 LOADM+1
27 LOADM-1
28 LOAD-SW1
29 UNLOAD-SW1
30 CE/CS
31 MON
32 SCLK
33 SENS
34 CLOCK
35 XLAT
36 DATA
37 VDD
38, 39 X1, 2
40 VSS
41 XT2
42 XT1
43 RESET
44 SCOR
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45 MUTEG
46 STB2
47 IC RESET
.
48 RMUTE
* CD-223M/224M/DPF-J3010/J5010
6
CIRCUIT DESCRIPTION
I/O
O No connection.
O Address buss of SRAM.
O No connection.
– No connection.
I Mechanism address detector switch.
I Mechanism address detector switch.
O SRAM read strobe.
O SRAM write strobe
I Mechanism address detector switch.
O No connection.
– Power supply (+5V).
O Disc sensor PWM output.
O No connection.
I TX permission data to remote control microprocessor.
O No connection.
I Reading data of remote control microprocessor.
O No connection.
O TX request data to remote control microprocessor.
O No connection.
O Data output to remote control microprocessor.
– GND.
I Disc sensor.
O Mechanism rotary motor (+).
O Mechanism rotary motor (-).
O Loading motor (+) for main pickup.
O Loading motor (-) for main pickup.
I Loading switch for main pickup.
I Unloading switch for main pickup.
O Chip selector
O Control port of poor focus works.
O Sens serial data read clock.
I SENS signal input.
O Serial data clock.
O CXD2587Q latch.
O Serial data output.
– Power supply (+5V).
– Main system clock (12.5MHz).
– GND.
– No connection.
I GND.
I System reset signal input.
I Sub code synchro detection.
O Muting control output.
x ao u163
y
O Strobe signal output to dot driver2 (DPF-J9010 only).
O IC reset.
i
O Analog mute.
2 9
8
Description
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
H : CCW
H : CW
m
H : MUTE ON.
L : MUTE ON.
9 9
9 9