Sony XR-5790R, Service Manual

Page: 27 / 41

– 40 –
Pin No. Pin Name I/O Function
33 MTLON I/O
34 CMON O Capstan/reel motor (M901) drive signal output terminal “H”: motor on
35 TAPEON O Tape system power supply on/off control signal output terminal “H”: tape on
36 ACCON I Accessory detect signal input terminal “L”: accessory on
37 PLLSI I PLL serial data input from the FM/AM PLL (IC1)
38 BEEP O Beep sound output terminal
39 LCDCKO O Serial data transfer clock signal output to the liquid crystal display driver (IC901)
40 LCDSO O Serial data output to the liquid crystal display driver (IC901)
41 LCDINH O
Blank indicate control signal output to the liquid crystal display driver (IC901)
“L”: no display
42 LCDCE O Chip enable output to the liquid crystal display driver (IC901)
43 UNICKO O Serial data transfer clock signal output terminal for the unilink Not used (pull down)
44 UNICKI I Serial data reading clock signal input terminal for the unilink Not used (fixed at “L”)
45 UNISI I Serial data input terminal for the unilink Not used (fixed at “L”)
46 UNISO O Serial data output terminal for the unilink Not used (pull down)
47 VDD — Power supply terminal (+5V)
48 AVDD — Power supply terminal (+5V) (for A/D converter)
49 AVREF+ I Reference voltage input terminal (+5V) (for A/D converter)
50 KEYIN1 I
51 KEYIN0 I
52 D-BASS I D-BASS switch (SW951) input (A/D input)
53 KEYSEL I Setting terminal for the key (fixed at center voltage)
54 DSTSEL I
Destination setting terminal
AEP, UK, South European models: fixed at “L”, German model: fixed at “H”
55 RCIN0 I Rotary remote commander shift key A/D input terminal
56 VSM1 I Signal meter voltage detection input terminal Not used (fixed at “L”)
57 VSM0 I FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1)
58 AVREF– I Reference ground terminal
59 AVSS — Ground terminal (for A/D converter)
60 GND — Ground terminal
61 BUSON O Bus on/off control signal output terminal Not used (pull down)
62 SYSRST O Reset signal output terminal “L”: reset Not used (pull down)
63 SEKOUT O Seek control signal output to the FM/AM tuner unit (TU1)
64 TUNON O Tuner system power supply on/off control signal output to the BA3918 (IC601) “H”: tuner on
65 FM ON O FM system power supply on/off control signal output to the BA3918 (IC601) “H”: FM on
66 MUT O Line muting control signal output terminal “H”: line muting on
Key input terminal (A/D input)
XR-5790R: OFF, SOURCE, MODE
*
, +
) +
SEEK AMS, –
= 0
SEEK AMS,
VOLUME –, SEL, , ATT , BTM SENS keys input (LSW901 to LSW910)
XR-5800R: OFF, SOURCE, MODE
*
, +
) +
SEEK AMS, –
= 0
SEEK AMS,
VOLUME –, SEL, , ATT keys input (LSW901 to LSW908 and LSW910)
Key input terminal (A/D input)
XR-5790R:
6
, INTRO 1, REPEAT 2, 3, BL SKIP 6, ATA 5, 4, PTY, AF/TA, PRST +/–, DSPL
keys input (LSW921 to LSW932)
XR-5800R:
6
, INTRO 1, REPEAT 2, 3, BL SKIP 6, ATA 5, MTL 4, PTY, AF/TA, BTM
SENS, DSPL keys input (LSW921 to LSW931)
METAL control in/out terminal
At initial mode: valid/invalid selection input of METAL function (“L” input: valid)
At normal mode: METAL on/off control signal output “H”: METAL on
XR-5790R: Not used this function in this set (fixed at “H”)
XR-5800R: Used for the this function