Kenwood RXD-V333, Service Manual

Page: 7 / 43

RXD-V333/V535//V636/V737
7
CIRCUIT DESCRIPTION
4-4 Pin Description of Microprocessor
Pin No. Pin Name I/O Description
ACTIVE
H L
1 CD5V O Control port of +5V AVR(X13,IC4). OFF ON
2 CE2 I Unused.
3 SD I SD detection input.
4 ST I Stereo detection input.
5 PLL CE O PLL IC chip enable.
6 ECHO MUTE O Control port of audio muting for echo. OFF ON
7 PLL CLK O PLL IC clock output.
8 BYTE - Connected to GND.
9 CNVSS - Connected to GND.
10 XCIN I Timer clock input(32.768kHz).
11 XCOUT O Timer clock output(32.768kHz).
12 RST I Reset signal input. NORMAL RESET
13 X OUT O Main clock output(10MHz).
14 VSS - Connected to GND.
15 X IN I Main clock input(10MHz).
16 VCC - u-com power 5.0V).
17 NC - Connected to VCC.
18 REM I Signal input of remote control.
19 ESS ST I MPEG CS
20 ESS ST I MPEG CS
21 CE I Back up detection input. AC ON AC OFF
22 BEEP SOUND O Beep sound output.
23 PLL DO I PLL IC data input.
24 B PLAY I Detection switch input of head position for B deck
25 R REC I B deck reverse recording prohibition detection switch
26 B PACK I B deck cassette tape detection switch input.
27 A PLAY I Detection switch input of head position for A deck
28 ESS CLK I Clock input from MPEG decoder(X32,IC12).
29 ESS DIN I Data input from MPEG decoder(X32,IC12).
30 ESS DO O Data output to MPEG decoder(X32,IC12).
31 FL DATA O Data output to VFD dot driver.
32 A PACK I A deck cassette tape detection switch input.
33 FL CLK O Clock output to VFD dot driver.
34 FL CE O Chip enable output to VFD dot driver.
35 FL RST O Reset signal output to VFD dot driver.
36 F REC I B deck forward recording prohibition detection switch.
37 B CrO2 I B deck CrO2 detection switch input. CrO2 Normal
38 A CrO2 I A deck CrO2 detection switch input. CrO2 Normal
39 A SOL O A deck solenoid control.
40 CPM O Deck capstan motor control.
41 B SOL O B deck solenoid control.
42 NOR O B deck Normal/CrO2 changeover control. NORMAL CrO2
43 BIAS O Deck bias on/off changeover control. ON OFF
44 NC - Unused.
45 R/P O Deck recording/playback changeover control. RECORDING PLAY
46 A/B O Deck A/B changeover control. B DECK A DECK
47 A EQ O A deck play back equalizer control.
48 REC MUTE O Deck recording mute control. MUTE ON
49 LINE MUTE O Deck line mute control. MUTE ON
50 B EQ O Equalizer control of B deck play back.