PIONEER KEH-3930R/XN/EW
Service Manual

KEH-3930R,3900R

Pin No. 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 41 20 *PE5088A 21

Pin Name rck dsens TELIN asens bsens NC VDD X2 X1 GND NC TESTIN AVDD AVREF0 SL MODELIN NL1 NL2 NC

I/O I I I I I

Format

O I

I I I I I I 60 1

Function and Operation RDS clock input Grille detach sense input Telephone mute input ACC power sense input Back up power sense input Not used VDD Oscillator output Oscillator input Connect to GND Not used Test program mode input A/D converter analog power supply (VDD) A/D converter standard voltage input Signal level input Model select input Noise level 1 input Noise level 2 input Not used Format C Meaning C MOS N Channel open drain

80

N

IC's marked by* are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction.

40

61 *PD6293A 1 48 49 64 16 33

32

17

39