Sony XR3F-19B160, Service Manual

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15
2-11. IC PIN FUNCTION DESCRIPTION
•
MD MAIN BOARD IC601
µ
PD78052GC-123-3B9 (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1 PH1IN I
Disc size (8 cm/12 cm) detect signal input from the photosensor (Q604)
“L”: 8 cm, “H”: 12 cm
2 PH2OR3 I
Disc in detect signal input from the photosensor (Q605) “H”: disc is present
3 PH4IN I
Disc loading completion detect signal input from the photosensor (Q607)
“H”: disc loading completed
4 AVSS
— Ground terminal (for analog system)
5 FO O
Focusing offset automatic alignment signal output to the CXA1782BR (IC501)
6 DAMUTE O
Muting control signal output to the D/A converter (IC301) “L”: mute on
7 AVREF1
I Reference voltage input terminal (+5V) (for D/A converter)
8 to 10 — —
Not used (open)
11 SQIN I
Subcode Q data input from the CXD2507AQ (IC502)
12 — —
Not used (open)
13 SQCK O
Subcode Q data reading clock signal output to the CXD2507AQ (IC502)
14 DAON O
D/A converter (IC301) power supply on/off control signal output terminal “H”: power on
15 VFINH O
Inhibit output to the fluorescent indicator tube driver (IC501) “L” active
16 VFLAT O
Serial data latch pulse output to the fluorescent indicator tube driver (IC501)
17 VFDAT O
Serial data output to the fluorescent indicator tube driver (IC501)
18 VFCLK O
Serial data transfer clock signal output to the fluorescent indicator tube driver (IC501) and key
control (IC502)
19 POWER O
Main system power supply on/off control signal output terminal “H”: power on
20 SVP O
Servo system power supply on/off control signal output terminal “H”: power on
21 AMUTE O
Audio mute on/off control signal output terminal “H”: mute on
22 DMUTE O
Digital mute on/off control signal output to the CXD2507AQ (IC502) “H”: mute on
23 EECE O
Not used (open)
24 COMP O
Analog compression signal output to the SM5852CS (IC302)
25 CDON O
CD/exit input signal select control signal output to the BA3129F (IC101)
“L”: exit input, “H”: CD on
26 LGSENS O
CD logic sense signal output to the external master unit
27 GFS I
Guard frame sync signal input from the CXD2507AQ (IC502) “L”: NG, “H”: OK
28 FOK I
Focus OK signal input from the CXD2507AQ (IC502) “L”: NG, “H”: OK
29 APC O
Laser diode on/off control signal output terminal “L”: laser on
30 EECLK O
Not used (open)
31 EESO O
Not used (open)
32 EESI I
Not used (open)
33 VSS
— Ground terminal (for digital system)
34 RDS I
Not used (open)
35 to 39 — —
Not used (open)
40 SLDON O
Sledding servo on/off control signal output terminal
41 SEL0 I Mode selection input terminal (fixed at “L” in this set)
42 SEL1 I Mode selection input terminal (fixed at “L” in this set)
43 — — Not used (open)
44 to 47
ADJOK0 to
ADJOK3
O
Automatic alignment monitor output terminal
Not used (open)
48 FG0 O Focusing gain automatic alignment signal output to the CXA1782BR (IC501)
49 FG1 O Focusing gain automatic alignment signal output to the CXA1782BR (IC501)