Read Sony XR-2800 / XR-2803 Service Manual online
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Pin No.
Pin Name
I/O
Function
42
BU IN
I
Battery detect signal input terminal “H”: battery on
43
MTLSEL
I/O
44
DOLON
I/O
45
AMSIN
I
Whether a music is present or not from CXA2509AQ (IC301) is detected at auto music sensor
“L”: music is present, “H”: music is not present
“L”: music is present, “H”: music is not present
46
ST
I/O
47
AMS ON
O
Tape auto music sensor control signal output to the CXA2509AQ (IC301)
“L” is output to lower the gain for audio level at FF/REW
“L” is output to lower the gain for audio level at FF/REW
48
N/R OUT
O
Forward/reverse direction control signal output to the CXA2509AQ (IC301)
“L: forward direction, “H”: reverse direction
“L: forward direction, “H”: reverse direction
49
TAPMUT
O
Tape muting on/off control signal output to the CXA2509AQ (IC301) “H”: tape muting on
50
ILLON
O
Power supply on/off control signal output terminal at the illumination and liquid crystal display
driver (IC901) “H”: power on
driver (IC901) “H”: power on
51
SD IN
I
Station detector detect input from the FM/AM tuner unit (TU1)
Stop level for SEEK, BTM, etc. is determined SD is present at input of “H”
Stop level for SEEK, BTM, etc. is determined SD is present at input of “H”
52
NOSESW
I
Detects the removal of the attaching and removing type front panel block “L”: attaching
Not used (fixed at “L”)
Not used (fixed at “L”)
53
TELMUT
I
Telephone muting signal input terminal At input of “L”, the signal is attenuated by –20 dB
Not used (fixed at “H”)
Not used (fixed at “H”)
54
REL T
I
Reel table rotation detect signal input from the take-up and supply reel sensor
55
ACCIN
I
Accessory detect signal input terminal “L”: accessory on
56
TESTIN
I
Setting terminal for the test mode “L”: test mode (normally fixed at “H”)
57
RC IN1
I
Rotary remote commander shift key A/D input terminal
58
PW SEL
I
Power select switch input terminal Not used (fixed at “L”)
59
MTLIN
I
Input terminal to set whether the auto metal function is present or not
“L”: auto metal function is present (fixed at “L”)
“L”: auto metal function is present (fixed at “L”)
60
AD ON
O
Power supply on/off control signal output for the A/D conversion
61
KEYSEL
I
Setting terminal for the key (fixed at “H”)
62
SEKOUTSEL
I
Active selection terminal for the SEKOUT (pin #•)
63
COLORSEL
I
Setting terminal for the illumination color “L”: amber, “H”: green (fixed at “H”)
64
LCDCE
O
Chip enable output to the liquid crystal display driver (IC901)
65
LCDCKO
O
Serial data transfer clock signal output to the liquid crystal display driver (IC901)
66
LCDSO
O
Serial data output to the liquid crystal display driver (IC901)
67
LCDINH
O
Blank indicate control signal output to the liquid crystal display driver (IC901)
“L”: no display
“L”: no display
68
UNICKI
I
Serial data reading clock signal input terminal for the unilink Not used (fixed at “H”)
69
UNISO
O
Serial data output terminal for the unilink Not used (open)
70
UNISI
I
Serial data input terminal for the unilink Not used (fixed at “L”)
71
UNICKO
O
Serial data transfer clock signal output terminal for the unilink Not used (open)
72
BUSON
O
Bus on/off control signal output terminal Not used (open)
Input of FM stereo detection signal from FM/AM tuner unit (TU1), and output of forced
monaural control signal to FM/AM tuner unit (TU1) (Commonly used for stereo display input
and forced monaural output)
FM stereo detection at input of “L”, forced monaural at output of “L”
monaural control signal to FM/AM tuner unit (TU1) (Commonly used for stereo display input
and forced monaural output)
FM stereo detection at input of “L”, forced monaural at output of “L”
Dolby control in/out terminal
At initial mode: valid/invalid selection input of dolby function (“L” input: valid)
At normal mode: dolby on/off control signal output “H”: dolby on
Not used this function in this set (fixed at “H”)
At initial mode: valid/invalid selection input of dolby function (“L” input: valid)
At normal mode: dolby on/off control signal output “H”: dolby on
Not used this function in this set (fixed at “H”)
METAL control in/out terminal
At initial mode: auto/manual mode selection input of METAL function “L”: manual mode
At manual mode: METAL on/off control signal output “H”: METAL on
At auto mode: input at MTLIN (pin
At initial mode: auto/manual mode selection input of METAL function “L”: manual mode
At manual mode: METAL on/off control signal output “H”: METAL on
At auto mode: input at MTLIN (pin
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