Kenwood X-W320 Service Manual page 4

-W320
1-2 Pin description
Pin No. Pin Name
1~7 G7~G1
8 VDD
9 CLK
10 STB
11 DATA
12 HXPRO
13 PLAY B/A
14 DOLBY ON
15 DOLBY C/B
16 MPX
17 RST
18 CPMA
19 CPMB
20 AVss
21 PHA
22 PHB
23 A PACK
24 B PACK
25 A CrO2
26 B CrO2
27 LEVEL L
28 LEVEL R
29 AVDD
30 AVREF
31, 32 XT1, XT2
33 Vss
34 X1
35 X2
36 CSPB
37 B BIAS
38 B Mecha R/P
39 F REC
40 R REC
41 CSP A
42 SOLB
43 SOLA
44 EQ SP
45 S DATA
46 S BUSY
47 CE
48 IC
49 LINE MUTE
50 REC MUTE
51 BIAS NORMAL
52 VDD
53 B PLAY SW
54 A PLAY SW
55 EQ 70/120
56 OTE
57~60 KR3~0
61 70HSP
62~70 SA~SI
71 VLOAD
72~77 SJ~SO
78 IC
79,80 G9,G8
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CIRCUIT DESCRIPTION
I/O
O FL tube grid signal output (G7~G1)
SUPPLY (+5V)
O System IC clock output
O System IC strobe signal input
O System IC serial data output
O HX-PRO bias switching
O B/A Head switching
O DOLBY ON/OFF
O DOLBY C/B
O MPX FILTER OFF/ON
I Reset signal input
O A capstan motor ON
O B capstan motor ON
GND
I A mecha rotation detection
I B mecha rotation detection
I A tape detection input
I B tape detection input
I A mecha CrO2 tape detection
I B mecha CrO2 tape detection
I CCRS, DPSS Lch signal input
I CCRS, DPSS Rch signal input
ANALOG SUPPLY (+5V)
FOR ADC
OPEN
GND
I Clock oscillator
I Clock oscillator
O B-Capstan motor speed High/Nor
O B Bias ON/OFF
O B REC/PLAY switching
I A-Fool Proof FWD
I A-Fool Proof BWD
O A-capstan motor speed High/Nor
O B solenoid ON
O A solenoid ON
O
I/O Serial data input output
I/O Serial busy input output
I System Stop
Connect to VSS
O Line mute control
O Rec mute control
O HX-PRO Bias switching
Supply (+5V)
I B-Mecha Mode SW
I A-Mecha Mode SW
O EQ switching
O OTE LED Indicator
I Key return signal input(KR3~0)
O EQ SP HIGH & BIAS 70us
O FL tube grid signal output(SA~SI)
FL tube driving voltage(-30V)
O FL tube segment signal output
O Supply (+5V) to FL
O FL tube grid signal output
Description
L : ON
H : B
H : ON
H : REC
L : REC OK
L : REC OK
H : NOR
L : PLAY
L : PLAY
H : 70us
Action
H
H/L
L
H/L
H
H
L
L
H
H
L
L
H
H
H
H
H/L
H
H
H
H
H/L
H
H
H/L
H/L
L
H
H
H
L
L
H
L