Read Sony XR-3750 / XR-3758 / XR-3759 / XR-7750 / XR-C350 / XRS-888 (serv.man2) Service Manual online
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48
N_ROUT
O
Forward/reverse control pin
49
TAPMUT
O
Tape muting control pin
At muting: “H”
Illumination power supply control pin
50
ILLON
O
At PW SEL on: ACC on: “H”
At PW SEL off: Power on: “H”
At PW SEL off: Power on: “H”
51
SD_IN
I
Station detection signal input pin
52
NOSESW
I
Front panel removal or attaching detection pin
53
TELMUT
I
Telephpne muting detection pin
“L”: 20 dB audio muting (E model only)
54
REL
I
Reel table rotation detection pin
55
ACCIN
I
Accessory voltage detection pin
56
TESTIN
I
Test mode setting pin
57
RC_IN1
I
Rotary remote commander input pin (A/D input)
58
PW_SEL
I
Power select switch input pin
59
MTLIN
I
AUTO METAL detection pin
“L”: METAL (Fixed at “H” in this set)
60
AD_ON
O
Power supply control pin for A/D conversion
61
KEYSEL
I
Key function setting pin
62
SOUTSEL
I
Active select pin for #• SEKOUT
63
COLOR SEL
I
Illumination color setting pin
“L”: amber, “H”: green
64
LCDCE
O
LCD chip enable output pin
65
LCDCKO
O
LCD clock output pin
66
LCDSO
O
LCD data output pin
67
LCDINH
O
LCD brank indication control pin
68
UNICKI
I
Clock input pin (for SONY BUS) (C350 only)
69
UNISO
O
Data output pin (for SONY BUS) (C350 only)
70
UNISI
I
Data input pin (for SONY BUS) (C350 only) (Fixed at “L” in 3750)
71
UNICKO
O
Clock output pin (for SONY BUS) (C350 only)
72
BUSON
O
BUS ON control signai output pin (for SONY BUS) (C350 only)
73
SYSRST
O
System reset signal output pin (for SONY BUS) (C350 only)
74
VREG
O
CPU regurator output pin (Fixed at “L” in this set)
75
GND
–
GND
76
X_OUT
O
System clock output pin (4.5 MHz)
77
X_IN
I
System clock input pin (4.5 MHz)
78
CE
I
Fixed at “L”
79
VDD1
–
Power supply
80
RESET
I
Reset input pin
Pin No.
Pin Name
I/O
Function
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