Sony CDX-3900R Service Manual page 17

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• IC5 CXP84640-063Q (CD SYSTEM CONTROL) (SERVO BOARD)
Pin No.
1
2, 3
4, 5
6
7
8
9
10
11
12, 13
14, 15
16
17
18
19
20
21
22
23 AGC CONT
24
25
26
27
TE
L 13942296513
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43 GFS/MNT2 SEL
44 SC-JIG ON/OFF
45
46
47
48
49
50
www
51
52
53
.
54
55
56 TEST MODE
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Pin Name I/O
ITRPT — Not used in this set.
— — Not used in this set.
NCO — Not used in this set.
OPEN I Front panel open detection input
CLOSE O Front panel close control output
LINKOFF I Bus interface link input
NCO — Not used in this set.
D SW I Down switch input (SW4)
SSTP I Limit switch input (SW3)
NCO — Not used in this set.
— — Not used in this set.
EMPH O O De-emphasis ON/OFF control output
CDMON O CD mechanism deck power control output
CD ON O CD power control output
A MUT O System attenuate control output
LD ON O Laser power ON/OFF control output
CD RST O CD system reset output
HOLD O Hold switch output
O AGC control output
— — Not used in this set.
PH3 I Not used in this set.
TSTIN0 I Not used in this set.
TSTIN1 I Not used in this set.
TST.CLV I Not used in this set.
NCO — Not used in this set.
RESET I System reset input ("L"=Reset)
X IN I X'tal oscillator input from system clock. (10 MHz)
X OUT O X'tal oscillator output for system clock. (10 MHz)
GND — Analog ground
XT OUT O Not used in this set.
XT IN I Not used in this set.
AVSS — A/D converter ground
AVREF I A/D converter reference voltage input
TEP L I Not used in this set.
TEP H I Not used in this set.
SLED– I Sled drive input
PH2 I Not used in this set.
SEK/SMET I Fixed at "H" in this set.
I Fixed at "H" in this set.
I Fixed at "H" in this set.
SCLK O CD-TEXT data read clock output
LOCK I/O Lock signal input/output
— — Not used in this set.
SCK2 O Sub Q read clock output
SI2 I Sub Q 80 bit, PCM peak and level data 16 bit input.
— — Not used in this set.
BUS CLK I/O Bus system serial clock input/output
x ao
BUS SI I Bus system serial interface input
y
BUS SO O Bus system serial interface output
i
F OK I Focus OK signal input
GFS I GFS signal detection input
I Fixed at "H" in this set.
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8
Q Q
3 6 7 1 3
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2 9 9 4 2 8
Pin Description
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9
17