Sony D-E880 Service Manual page 15

Pin No. Pin Name I/O
39 HOLD I
40 EX BATT I
41 XSPDOE O
42 XHGON O
43 XLAT O
44 XSOE O
45 DRVLT O
46 XPOWLT O
47 XDOUTON O
48 XAPC OFF O
49 XVRST —
50 to 64 SEG14 to SEG0 O
65 to 68 COM3 to COM1 O
69 to 71 V3 to V1 O
72, 73 C1, C0 O
74 STOP O
75 TEST I
76 XHPSW O
77 XLIGHT O
78 RESET I
79 XIN I
80 XOUT O
HOLD switch (S804) input terminal
External battery detection signal input terminal
Control signal output to the spindle motor driver (IC402)
Optical pick-up power ON/OFF control signal output terminal "L": ON
Serial data latch pulse signal output to the CXD3027R (IC601)
Serial data output enable signal output terminal
Latch signal output to the spindle motor driver (IC402)
Latch signal output to the power control (IC401)
Digital output LED control signal output terminal "L": ON
APC mute signal output terminal "L": mute
Not used (open)
Segment drive signal output to the liquid crystal display on the switch unit
Common drive signal output to the liquid crystal display on the switch unit
Bias signal output to the liquid crystal display driver
Capacitor connected terminal for the liquid crystal display driver voltage-up
VCD control stop signal output terminal Not used (Fixed at "L")
Test terminal for IC (Fixed at "L")
ON/OFF control signal output to the headphone amplifier (IC351)
LCD back light control signal output to the liquid crystal display on the switch unit
System reset signal input from the power control (IC401) "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
System clock input terminal
System clock input terminal Not used (open)
– 28 –
Description
"L": hold ON, "H": hold OFF