Service manual

MD-X8
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IC901 RH-iX2679AFZZ:System Control Micon(iX2679AF) (2/3)
33 TRAY SW-A P124 Input Main tray OPEN completion detection switch input
H: OPEN completion state when SW is OFF.
L: Other state when SW is ON. This switch provides the CLOSE function
when the tray lid is pressed.
34 TRAY SW-B P125 Input Main tray CLOSE completion detection switch input
L: CLOSE completion state when SW is ON
H: Other state when SW is OFF
35 TRAY SW-C P126 Input Sub-tray placing completion detection switch input
L: Placing completion state when SW is ON
H: Other state when SW is OFF.
36 TRAY SW-D P127 Input Sub-tray SET completion detection switch input
H: SET completion state when SW is OFF
L: Other state when SW is ON.
37 — VDD — To be connected to ADD
38 MAIN CLK X2 — 16 MHz crystal
39 MAIN CLK X1 Input 16 MHz crystal
40 — VSS — Ground potential To be connected to VSS
41* Not used XT2 — SUB CLK not used To be opened
42 Not used XT1 Input SUB CLK not used To be connected to VSS
43 RESET RESET Input Reset input
44 RX IN INTP0 Input Remote controller input
45 Power failure INTP1 Input Power failure detection input Power failure = L
detection
46 NAME IN INTP2 Input TEXT input from external MD
47 DATA IN/OUT INTP3 Input/Output Data input/output from and to keyboard
48 CLK IN/OUT INTP4 Input/Output Clock input/output from and to keyboard
49 PROTECT INTP5 Input Power amplifier stage abnormality detection input Abnormal state = 1
50 DSTB INTP6 Input Strobe input from MD microcomputer Interruption input
51 — AVDD — A/D converter analog power To be connected to VDD
52 — AVREFO Input A/D converter reference voltage input Wiring separately from VDD
53 KEY0 AN10 Input A/D input of key - 0
54 KEY1 AN11 Input A/D input of key - 1
55 KEY2 AN12 Input A/D input of key - 2
56 KEY3 AN13 Input A/D input of key - 3
57 Spare AN14 Input To be connected to VSS
58 Initial setting AN15 Input Destination setting with A/D value
59 SPAN selection P16 Input Tuner span selection
60 VSM AN17 Input Input of electric field intensity in RDS ASPM state by using A/D value
61 — AVSS — A/D converter ground potential To be connected to VSS
62 SD P130 Input SD input in case of TUNER AUTO SCAN
63 Illumination ON/ P131 Output Illumination in ON state: H output
OFF switching Illumination in OFF state: L output
64 Not used AVREF1 Input D/A converter reference voltage input To be connected to VDD
65 232C-IN RXD2 Input Serial data input in UART mode
Data operation from external personal computer through PC card
66 232C-OUT TXD2 Output Serial data output in UART mode
Data sending from external personal computer through PC card
67 V. LOAD P72 Output Selection of 7.5V/5V line voltage supplied to MD
H is set to set the 7.5V line only when MD is set to LOAD or EJECT mode.
68 M-DATA SI1 Input Serial data input from MD microcomputer
69 K-DATA SO1 Output Serial data output to MD microcomputer
70 DSCK SCK1 Output Serial clock output to MD microcomputer
71 MIC detection P23 Input MIC jack insertion detection input L: MIC connected, H: Not connected
72 RWC P24 Output READ/WRITE control output to CD DSP element
73 SQOUT SI0 Input Serial input of sub-code data Q from CD DSP
Pin No.
FunctionTerminal Name
Input/Output
Port Name
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.