Kenwood CD-323M, Service Manual

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CD-323M/324M/DPF-J5020
4
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Description
1 A16 O No connection.
2 A17 O No connection.
2 NC – No connection.
3 S3-SW I Mechanism address detector switch.
4 S2-SW I Mechanism address detector switch.
5 RD O SRAM read strobe.
6 WR O SRAM write strobe
7 S1-SW I Mechanism address detector switch.
8 ASTB(CE) O No connection.
9 VDD – Power supply (+5V).
10 +5VPUL O Disc sensor PWM output.
11 RTRN O No connection.
12 RWR O No connection.
13 RWRR O No connection.
14-21 L-D0-D7 O No connection.
22 TEST – GND.
23 DISC-SW I Disc sensor.
24 ROTARY-CW O Mechanism rotary motor (+). H : CCW
25 ROTARY-CCW O Mechanism rotary motor (-). H : CW
26 LOADM+1 O Loading motor (+) for main pickup.
27 LOADM-1 O Loading motor (-) for main pickup.
28 LOAD-SW1 I Loading switch for main pickup.
29 UNLOAD-SW1 I Unloading switch for main pickup.
30 CS O SRAM CS.
31 MON O Control port of poor focus works.
32 SCLK O Sens serial data read clock.
33 SENS I SENS signal input.
34 CLOCK O Serial data clock.
35 XLAT O CXD2587Q latch.
36 DATA O Serial data output.
37 VDD – Power supply (+5V).
38, 39 X1, 2 – Main system clock (12.5MHz).
40 VSS – GND.
41 XT2 – No connection.
42 XT1 I GND.
43 RESET I System reset signal input.
44 SCOR I Sub code synchro detection.
45 MUTEG O Muting control output. H : MUTE ON.
46 STB2 O No connection.
47 IC RESET O IC reset.
48 RMUTE O Analog mute. L : MUTE ON.
49 SDATA I/O Serial data signal I/O.
50 SBUSY I/O Serial busy signal I/O.
51 AVDD – Power 5V).
52 AVREF – A/D reference power supply.
53 A/D0 I Model selector.
54 8/16 I 8/16 bit selector. H:16bit.
55 JOG2 I Encoder signal A input.
1-2 Microprocessor pin description (X32, IC8)
CD-323M(K) COVER1,1p( 98.11.26 5:01 PM y [ W 7
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