Sony CDX-C8850 - Fm/am Compact Disc Player, Руководство по обслуживанию

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• IC5 CXP84640-050Q (CD SYSTEM CONTROL) (SERVO BOARD)
Pin No. Pin Name I/O Pin Description
1 – 5 NCO — Not used in this set.
6 FP OPEN I Front panel open detection input
7 FP CLOSE O Front panel close control output
8 LINKOFF I Bus interface link input (Not used in this set.)
9 DRV OE O Focus/tracking coil/sled motor control output
10 D SW I Down switch input (SW4)
11 – 13 NCO — Not used in this set.
14 LM EJ O Loading motor control output
15 LM LOD O Loading motor control output
16 EMPH O O De-emphasis ON/OFF control output
17 CDMON O CD mechanism deck power control output
18 CD ON O CD power control output
19 A MUT O System attenuate control output
20 LD ON O Laser power ON/OFF control output
21 CD RST O CD system reset output
22 – 24 — — Not used in this set.
25 PH3 I Not used in this set.
26 TSTIN0 I Not used in this set.
27 TSTIN1 I Not used in this set.
28 TST CLV I Not used in this set.
29 NCO — Not used in this set.
30 RESET I System reset input (“L” = Reset)
31 X IN I X’tal oscillator input of system clock. (10 MHz)
32 X OUT O X’tal oscillator output of system clock. (10 MHz)
33 GND — Analog GND
34 XT OUT O Not used in this set.
35 XT IN I Not used in this set.
36 AVSS — A/D converter GND
37 AVREF I A/D converter reference voltage input
38 TEP L I Not used in this set.
39 TEP H I Not used in this set.
40 NCO — Not used in this set.
41 PH2 I Not used in this set.
42 SCLK O CD-TEXT data read clock output
43 ESPXQOK O XQOK signal output to DRAM controller.
44 ESPSDT I Serial data input from DRAM controller.
45 GRSRST O Reset signal output to DRAM controller.
46 GRSCOR I Sub-cord sync input from DRAM controller.
47 CD XLAT O CD signal process serial latch output
48 TX CLK O EEPROM serial clock output
49 TX DATA O EEPROM serial data output
50 UNISO O Not used in this set.
51 BUS CLK I/O Bus system serial clock input/output
52 BUS SI I Bus system serial interface input
53 BUS SO O Bus system serial interface output
54 F OK I Focus OK signal input
55 GFS I GFS signal detection input
56 SCOR O Sub-cord sync output
57 SENS I SENS signal input
58 — I Fixed at “H” in this set.
59 CD CKO O CD signal process serial clock output