Sharp CD-PC1881V, Service Manual

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CD-PC1881V
IC701 RH-iX0340AWZZ:System Control Microcomputer (IX0340AW) (1/2)
1 VDD VDD — (+) Power supply
2 P37 ENA Output Dolby prologic enable terminal
3 P36 DO Input Data input
4 P35 DI Output Dara output
5 P34 CE Output CE output
6 P33 CLK Output Clock output
7,8 P32, P31 LCK1, LCK2 Output C Clock output
9 P30 CD DSP RWC Output CD DSP read write control
10 RESET RESET Input Reset
11 X2 X2 Output Main clock
12 X1 X1 Input Main clock
13 Vpp VPP — Power supply terminal
14* XT2 XT2 — Open
15 P04 CD DSP WRQ Input CD DSP write request
16 VDD VDD — (+) Power supply
17 P27 SBUSY Output Comunicate to MPEG controller SBUSY
18 P26 CD DSP COIN Outout CD DSP comand
19 P25 SQOUT Input CD DSP code q out
20 P24 CD DSP CQCK Output CD DSP clock
21 P23 CD DSP RES Output CD DSP reset
22 P22 FRF (DRF) Input CD RF level detection
23 P21 SLD+ Output CD sled motor +
24 P20 SLD- Output CD sled motor -
25 AVss AVSS — Analog ground
26 ANI7 SPEANA3 Input SPEANA data input 16 KHz
27 ANI6 SPEANA2 Input SPEANA data input 1 KHz
28 ANI5 SPEANA1 Input SPEANA data input 63 Hz
29 ANI4 TUN SM Input Tuner signal mater input
30 ANI3 T2 RUN Input Tape 2 ran pulse input
31-33 ANI2-ANI0 KEYIN3-KEYIN1 Input Key input
34 AVDD AVDD — Analog VDD
35 AVREF AVREF — Analog REF voltage
36 P03 PUIN SW Input CD PUIN switch
37 P02 O/C SW Input CD open/close switch
38 INTP1 SYS STOP Input System stop input
39 INTP0 REMOCON Input Remocon input
40 Vss VSS — Ground voltage
41 P74 DNO SW Input CD disc No. switch
42 P73 U/D SW Input CD up/down switch
43 P72 TIMER LED Output Timer LED control
44 P71 T_SOL Output Tape solenoid control
45 P70 T_MOT Output Tape motor control
46 VDD VDD — (+) Power supply
47 P127 CAM SW Input Tape cam switch
48 P126 T1FAS Input Tape full autostop pulse input
49 P125 FPA Input Tape 2 A-side full proof
50 P124 H/P Input Headphone input
51 P123 AC RLY_CON Output AC relay control
52 P122 REC/PLAY Output Tape REC/PLAY change
53 P121 T_BIAS Output Tape Record bias control
54 P120 T_T1T2 Output Tape T1/T2 change
55 P117 MDO Input MPEG microcomputer data input
Port Name Terminal Name Pin No. Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Function