JVC UX-G6 Service Manual page 49

UX-G6/FS-G6
MN171601AJABF (IC671) : System control
1.Pin layout
32 ~ 17
33 16
48 1
49 ~ 64
3.Pin function
Pin No. Symbol
1
REC/PB
2~7
NC
8
MSI
9
NC
10
Cro2/NORM
11
BIAS
12
NORM
13
PBMUTE
14
NC
15
NROFF
16
NRREC
17
R.MUTE
18
BLUE
19
REC
20
REVPLAY
21
FWDPLAY
22
REVERSE
23
DOLBYB
24~26
27,28
KO1,KO0
29
30~32
KI2~0
33
NC
34
PLZ
35
CAPN
36,37
NC
38
REV-RSW
39
40
PACKSW
41
DETECT
42
CroMETALSW
43
PLAY
44
FWD-RSW
45,46
NC
47
OPEN
48
CLOSE
49
CLOSESW
50
OPENSW
51
RST
52
X1
53
X2
54
VSS
55,56
OSC2,1
57
VDD
58~61
NC
62,63
DCSO/I
64
NC
2-44
2.Key matrix
KEYO0
KEYI0 REC PAUSE
KEYI1 REVERSE
KEYI2 DOLBY B NR
I/O
O Switching to R/P head
- Connect to GND
I Detecting to music scan
- Non connect
O Detecting to Chrome
O Bias output
O Switching to playback equalizer (H=70, L=120 )
O Playback mute
- Non connect
O Switching to ON/OFF for DOLBY (H=OFF, L=ON)
O Switching to REC/PB for used DOLBY (H=PB, L=REC)
O Recording mute
O Indicator control output
O Indicator control output (REC)
O Indicator control output (REVERSE Play)
O Indicator control output (FORWARD Play)
O Indicator control output (REVERSE)
O Indicator control output (DOLBY B NR)
- Non connect
O Key matrix output
- Non connect
I Key matrix input
- Non connect
O Plunger ON
O Capstan motor ON
- Non connect
I Detect reverse recording (Recording prohibition)
- Non connect
I Tape detecting(tape in use:L)(tape ON:L)Tape detect yes or not
I Detecting to reel pulse
I Detecting to chrome
I Detecting to play
I
(Recordable:L) Detecting to FWD to recording (recording prohibition)
- Non connect
O Cassette tray : open
O Cassette tray : close
I Detecting for cassette tray : close
I Detecting for cassette tray : open
I CPU Reset input
- Connect to GND
- Non connect
- Connect to GND
I/O Oscillation terminal
- Power supply
- Connect to GND
I/O DCS input/output
- Connect to GND
KEYO1
STOP
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OPEN/CLOSE
Function