Sharp XL-3000 Service Manual download pdf (Page 46)

XL-3000/3000C

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1-4 COM3-COM0 Output LCD common output terminal.

5-7 VLC3-VLC1 — LCD power supply terminal.

8 VDD Input Microcomputer power supply +5V.

9 OSC2 Output Oscillator ground terminal for main clock. f=8MHz

10 OSC1 Input Oscillator ground terminal for main clock. f=8MHz

11 VSS — Microcomputer power supply GND.

12 XI Input Oscillator ground terminal for sub clock. f=32.768kHz

13 XO Output Oscillator ground terminal for sub clock. f=32.768kHz

14 MMOD Input Memory mode selection terminal.

15 VREF– — Power supply GND for AD converter.

16 KEY0 AN0/PA0 Input CD lid status detection input.

17 KEY1 AN0/PA1 Input Operation button input, Max-8 buttons.

18 KEY2 AN0/PA2 Input Operation button input, Max-8 buttons.

19 KEY3 AN0/PA3 Input MODEL/TUNER destination input.

20 KEY4 AN0/PA4 Input Current detection of CD lid control motor.

Used to decide the CD lid drive error to control it.

21* KEY5 AN0/PA5 Input CD servo auto adjustment mode selection input.

22* KEY6 AN0/PA6 Input Tape mechanism operating status detection input.

Decides the F.P/CAM-SW status with A/D value.

23* KEY7 AN7/PA7 Input Tuner signal meter (S meter) voltage input terminal.

24 VREF+ Input Power supply for A/D converter +5V.

25 TXD SBO0/P00 Output Data output terminal to TUNER PLL IC.

26 RXD SBI0/P01 Input Data input from TUNER PLL IC

27 SBT0/P02 Output Synchronous clock output with TUNER PLL IC

28 SBO1/P03 Output Enable output of TUNER PLL IC. "L" = OFF "H" = ON

29* SBI1/P04 Output Tape mechanism solenoid drive control output.

30* SBT1/P05 Output Tape mechanism motor drive control output.

31* DK/BZER P06 Output Recording/playback selection output of tape circuit.

"H" = Recording mode, "L" = Playback mode

32 RST/P27 Input Reset signal input

33* RMOUT P10 Input CLOCK/TIMER/SLEEP button input.

34* P11 Input Tape run/END detection input. Decided as tape run if pulse is input.

35* TM2IO P12 Output Recording bias oscillation circuit control output.

"H" = Bias oscillation, "L" = oscillation stop.

36* TM3IO P13 Output Recording bias oscillation frequency selection control output.

37 TM4IO P14 Input Power (POWER) button input detection.

38 IRQ0 P20 Input Switches to the HALT mode when changing to . "L" at power failure detection input.

39 SENS IRQ1/P21 Input Remote control signal input.

40 IRQ2 P22 Input Synchronous clock input with RDS IC.

41* IRQ3 P23 Input Jog dial UP pulse input.

42* IRQ4 P24 Input Jog dial DOWN pulse input.

43 P30 Output SURROUND control output.

44 P31 Output POWER IC STAND-BY terminal CONTROL.

45 P32 Output Power mute output. "H" = MUTE ON "L" = MUTE OFF

46 LED0 WE/P50 Output CD servo power supply circuit control output. "H" = CD power ON "L" = CD power OFF

47 LED1 RE/P51 Output Main TRANS RELAY CONTROL. "H" = ON "L" = OFF

48 LED2 CS/P52 Input Data input from RDS IC.

LDE3/S51 A16/P53

Input Radio stereo broadcast reception detection input. "L" = During stereo broadcast reception

LED4/S50 A17/P54

Input Broadcast reception status detection input. "L" = During broadcasting signal reception

51 SEG49 P60/A0 Output LCD backlight control signal output. "H" = Backlight ON, "L" = Backlight OFF

52* SEG48 P61/A1 Output

53 SEG47 P62/A2 Output LED illumination control of electric JOG dial. "H" = ON "L" = OFF

Pin No.

FunctionTerminal Name

Input/Output

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

IC701 RH-iX0039SJZZ: System Microcomputer/FL Driver (IX0039SJ) (1/2)

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Sharp XL-3000 Service Manual Page 46

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