Kenwood RXD-M33V Service Manual page 9

7. Port Description of IC
7-1 Sound Controller with Surround IC(X29, IC201)
Port No. Port Name
1 REF IN
2 REF OUT
3,40 CD
4,39 NC
5,38 TUN
6,37 TAPE
7,36 AUX IN
8,35 TA REC
9,34 AUX OUT
10,33 VSEL A OUT1,2
11,32 LOUDNESS
12,31/13,30 E.. BASS
14,29/15,28 E.. BASS
16,27 TRE
17,26 VSEL B OUT1,2
18,25 VOL IN1.2
19,24 VOL OUT1,2
20 VCC
21 DATA
7-2 Port Function of PB/REC Equalizer System IC(X28,IC1)
Port No. Port Name
1 VREF
2 GND
3 BIN-R
4 AIN-R
5 PBNF-R
6 PBEQ-R
7 EOUT-R
8 TAI-R
9 PBOUT-R
10 MAOUT
11 MAI
12 IREF
13 RIN-R
14 RIP
15 ROUT-R
16 ROUT-L
17 VCC
18 RIN-L
19 MUTE
20 A120/70
21 A/B
22 B I/I I
23 PBOUT-L
24 TAI-L
25 EQOUT-L
26 PBEQ-L
27 PBNF-L
28 AIN-L
29 BIN-L
30 REC-RST
CIRCUIT DESCRIPTION
I/O
I Input pin of the reference amplifier.
O Output pin of the reference amplifier.
I Input pin of the CD.
I Unused.
I Input pin of the TUNER.
I Input pin of the Tape play.
I Input pin of the CD.
O Output pin of the input volume 1 and 2.
I Input pin of the volume input selector A1 and A2/Output pin of the REC-C1 and 2.
- Capacitor connection pin for the volume changing noise reduction.
- Frequency characteristic setting pin in the loudness part.
- Frequency characteristic setting pin in the tone control (Bass).
- Frequency characteristic setting pin in the tone control (Mid).
- Frequency characteristic setting pin in the tone control (Treble).
O Output pin of the volume input selector B1and B2.
I Input pin of the main volume.
O Output pin of the main volume.
- Power supply (+5.0V)
I Input pin of the serial data.
I/O
- Reference voltage.
- Ground port.
I PB B deck right channel input.
I PB A deck right channel input.
- PB EQ. feed back.
O Equalizer right channel output (70u).
O Equalizer right channel output (120u).
I Tape right channel input.
O PB right channel output.
O MS amplifier output.
I MS amplifier input.
I Equalizer reference current input.
I Rec equalizer right channel input.
O NAB output.
O Rec equalizer right channel output.
O Rec equalizer left channel output.
- Power supply.
I Rec equalizer left channel input.
I Mode control input.
I Mode control input.
I Mode control input.
I Mode control input.
O PB left channel output.
I Tape left channel input.
O Equalizer left channel output (120u).
O Equalizer left channel output (70u).
- PB EQ. feed back.
I PB A deck left channel input.
I PB B deck left channel input.
- Rec return.
RXD-M33V
Description
Description
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