Sony cdx 4050 service manual

Page 1

cox-4050 EXCD-50

I
. I

SONY:

SERVICE MANUAL giwfigié

Canadian Model

E Model
CDX-4050
File this Supplement with the Service Manual.
Subject :

1. EXPLANATION OF ICTERMINALS

2. ELECTRICAL ADJUSTMENTS

3. BLOCK DIAGRAM

O CORRECTION

TABLE OF CONTENTS
Title ' Page
1_ EXPLANATION OF [c TERMINALS .............................................................................................. 2

2. ELECTRICAL ADJUSTMENTS 444444444444 4
3. BLOCK DIAGRAM .......................... 5
OCORRECTION ....................................................... ' 8

Page 2

IC701 ( u PD1701 ZGF-51 7-SBE)

SECTION 1
EXPLANATION OF IC TERMINALS

Pln No. Pln name l/O Deserlptlon
1 TEST I Test Mode Terminal.
2 CD CE 0 Serial latch output terminal to IC401. ( [LPD7801 ZGC)
3 PLL ED 0 PLL error output terminal.
4 VDD - Power Supply terminal. (+5V)
5 AM VCO I Input terminal of AM local oscillator frequency.
6 FM VCO I Input terminal of PM local oscillatorfrequency.
7 CE - Not used. (VDD connetion, in this device)
8 VDD - Power Supply terminal (+5V)
9 CD CK 0 Serial clock output terminal to 10401. ( [.LPD780120C)
10 CD SO 0 Serial data output terminal to 10301. ( uPD780120C)
11 CD SI 1 Serial data input terminal to IC401. ( uPD780126C)
12 IF I Input pin of FM (10.7MHz) /AM (450kHz) IF COUNT.
13 517513 - Not used.
14 W I ACC DETECT terminal.
15 CSW I DISC SW input terminal.
16 FM/m o FM/AM BAND Select terminal.
17 LOCAL 0 Local output terminal.
18 SEK 0 Seek operation terminal.
19 POWER 0 Power control output.
20 m 0 co Servo 1C Reseting output terminal.
21 CD PWR 0 CD Power control terminal.
22 m 0 CD Servo IC Sleep output terminal.
23 A ' STBY 0 Power amplifier Standby control.
24 X OUT 0 Crystal oscillator connection terminal. (4.5MHz)
25 X IN 1 Crystal oscillator connection terminal. (4.5MHZ)
26 GND - Power Supply terminal. (GND)
27 m - Monaural control terminal. (not used)
23 RA/CD o Radio/CD Select output terminal.
29 VOL SO 0 Serial data output terminal to AP processor.
30 VOL CK 0 Serial clock output terminal to AF processor.
31 W l BATT line on/off detection.
32 NC - Not used. (GND connection, in this device).
33 MONO INT - Not used. (GND connection, in this device)
34 NC - Not used. (GND connection, in this device)
35 COM 2 0 LCD COM 2 drive.
36 OOMl 0 LCD 00M 1 drive.
37 COM 0 0 LCD COM 0 drive.
38 $19 0 LCD Segment drive.
39 818 0 [CD Segment drive.
40 $17 0 LCD Segment drive.