Service manual

- 4 -VRX630
pin 27: IE BUS RX :IN: IE Bus communication line.
pin 28: IE BUS TX : O : IE Bus communication line.
pin 29: OSD DO : O : Serial data output to OSD IC.
pin 30: OSD STB : O : Serial strobe output to OSD IC.
pin 31: OSD SCK : O : Clock pulse output to OSD IC.
pin 32: PLL CE : O : PLL chip enable signal output.
pin 33: PLL DO : O : PLL serial data output.
pin 34: PLL DI :IN: PLL serial data input.
pin 35: PLL SCK : O : PLL serial clock output.
pin 36: FM STEREO_ :IN: FM stereo detection signal input.
"L"= Stereo.
pin 37: NU : IN: Not in use.
pin 38: NU : IN: Not in use.
pin 39: AV ON : O : Power supply control signal output.
pin 40: OSD TSC : O : OSD external memory control signal output.
pin 41: NU : IN: Not in use.
pin 42: VOL CLK : O : Clock pulse output to electric volume IC.
pin 43: VOL DO : O : Serial data output to electric volume IC.
pin 44: OPEN :IN: Panel open detection signal input.
pin 45: CLOSE : IN : Panel close detection signal input.
pin 46: NU : O : Not in use.
pin 47: PAL_/NTSC : O : "L"= PAL, "H"= NTSC.
pin 48: EXIO STB : O : Strobe pulse output to the extended ports
IC.
pin 49: SEL 2 :IN: AUX IN select signal input.
Ref table 1.
pin 50: SEL 3 :IN: AUX IN select signal input.
Ref table 1.
pin 51: NU : IN: Not in use.
pin 52: NU : IN: Not in use.
pin 53: NU : IN: Not in use.
pin 54: NU : IN: Not in use.
pin 55: V SEL 1 : O : Image source select signal output.
Ref. Table 2.
pin 56: V SEL 2 : O : Image source select signal output.
Ref. Table 2.
pin 57: BLANK : O : Blanking signal output.
pin 58: NV ON : O : "H"= Navigation RGB, "L"= OSD RGB.
pin 59: VIDEO_/RGB : O : Image select signal input.
"H"= OSD, RGB navigation.
"L"= Black box tuner, Composite naviga-
tion.
pin 60: VCC : - : Positive supply voltage.
pin 61: NU : IN : Not in use..
pin 62: VSS : IN : Ground.
pin 63: IR SEL : O : Remote control signal select.
"L"= Optical input."H"= Micro computer sig-
nal output.
pin 64: PARKING IN : IN: "H"= Parking brake ON.
pin 65: MOTOR F : O : Open/Close control signal output.
Ref table 3.
pin 66: MOTOR R : O : Open/Close control signal output.
Ref table 3.
pin 67: MOTOR ON : O : Motor power supply ON signal output.
pin 68: AMP MUTE : O : "H"= Amplifier Mute.
pin 69: NAVI MUTE : O : "L"= Navigation audio signal ON.
pin 70: KEY REQ :IN : LCD driver key request signal input.
pin 71: ILL DETEC_ : IN : Illumination detect signal input.
Negative logic.
pin 72: TILT_ : IN: "L"= Tilt, "H"= Horizontal.
pin 73: POWER SW :IN: Power key switch input.
pin 74: SYSTM MUTE : O : System mute.
pin 75: LINE MUTE : O : Line mute.
pin 76: BUS A OUT : O : Ce-NET bus input control.
"L"= Audio input.
"H"= Audio output.
pin 77: SYSTM ACC : O : Ce-NET bus system ACC.
pin 78: DISTINATION : IN : Distination select. "L"= USA, "H"= 3rd area.
pin 79: AMP STNBY_ : O : "H"= Amplifier ON.
pin 80: NU : O : Not in use.
pin 81: PHON INT :IN: Telephone interrupt signal input.
pin 82: NU : IN: Not in use.
pin 83: NU : IN: Not in use.
pin 84: FM SD :IN: FM SD input.
pin 85: AM SD :IN : AM SD input.
pin 86: NU : IN: Not in use.
pin 87: NU : O : Not in use.
pin 88: NU : O : Not in use.
pin 89: NU : IN: Not in use.
pin 90: NU : IN: Not in use.
pin 91: NU : IN: Not in use.
pin 92: NU : IN: Not in use.
pin 93: SD SPEED : O : Station detect speed control.
"H"= Normal, "L"= Speed up.
pin 94: A VSS : - : Ground.
pin 95: DCP CE : O : DCP chip enable.
pin 96: Vref : - : Connect to ground.
pin 97: +5V : - : +5V.
pin 98: DCP DI :IN: DCP Serial data input.
pin 99: DCP DO : O : DCP serial data output.
pin100: DCP CK : O : DCP clock pulse output.
Table1. AUX IN select signal input
Sel 3 (pin50) Sel 2 (pin49)
No connection L L
No connection L H
Image signal interrupt H L
Image sound signal interrupt H H
Table2. Image source select signal output.
Vsel 2 (pin56) Vsel 1 (pin55)
Video mute L L
Navigation L H
Black box tuner H L
Black box tuner H H
Table3. Open/Close control signal output.
Motor F (pin65) Motor R (pin66)
Free L L
Open L H
Close H L
Brake H H
052-6044-21 M27C160-100M6 EP-ROM (Character data of On
screen display for USA)
1. Terminal Description
pin 1 : N.C. : No connection.
pin 2 : A 18 : Address input terminal.
pin 3 : A 17 : Address input terminal.
pin 4 : A 7 : Address input terminal.
pin 5 : A 6 : Address input terminal.
pin 6 : A 5 : Address input terminal.
pin 7 : A 4 : Address input terminal.
pin 8 : A 3 : Address input terminal.
pin 9 : A 2 : Address input terminal.
pin 10: A 1 : Address input terminal.
pin 11: A 0 : Address input terminal.
pin 12: CE_ : Chip enable signal input. Negative logic.
pin 13: VSS : Ground.
pin 14: OE_ : Output enable signal input. Negative logic.
pin 15: D 0 : Data output terminal.
pin 16: D 8 : Data output terminal.
pin 17: D 1 : Data output terminal.
pin 18: D 9 : Data output terminal.
pin 19: D 2 : Data output terminal.
pin 20: D 10 : Data output terminal.
pin 21: D 3 : Data output terminal.
pin 22: D 11 : Data output terminal.
pin 23: VCC : Positive supply voltage.
pin 24: D 4 : Data output terminal.
pin 25: D 12 : Data output terminal.
pin 26: D 5 : Data output terminal.
pin 27: D 13 : Data output terminal.
pin 28: D 6 : Data output terminal.
pin 29: D 14 : Data output terminal.
pin 30: D 7 : Data output terminal.
pin 31: D 15 / A-1 : Data output / Address input.
pin 32: VSS : Ground.
pin 33: BYTE_ : L : 1 word = 8 bit
H : 1 word = 16 bit
pin 34: A 16 : Address input terminal.
pin 35: A 15 : Address input terminal.
pin 36: A 14 : Address input terminal.
pin 37: A 13 : Address input terminal.
pin 38: A 12 : Address input terminal.
pin 39: A 11 : Address input terminal.
pin 40: A 10 : Address input terminal.
pin 41: A 9 : Address input terminal.
pin 42: A 8 : Address input terminal.
pin 43: A 19 : Address input terminal.
pin 44: N.C. : No connection.