Sony CDX-3250 Bedienungsanleitung

– 1 –

Model Name Using Similar Mechanism CDX-4180

CD Drive Mechanism Type MG-363X-121

Optical Pick-up Name KSS-521A

SERVICE MANUAL

AEP Model

UK Model

CDX-3250

FM/MW/LW COMPACT DISC PLAYER

MICROFILM

SPECIFICATIONS

– 19 –

4-1. IC PIN DESCRIPTION

• IC801 µPD17705GC-526-3B9 (SYSTEM CONTROL)

Pin No. Pin Name I/O Pin Description

1 SIRCS I SIRCS input (A/D)

2 IN-SW I CD mechanism position detection

3 D-SW I CD mechanism position detection

4 SELF-SW I CD mechanism position detection

5 L-SW I LIMIT switch

6 LM-EJ O Loading motor control (Eject direction)

7 LM-LOD O Loading motor control (Loading direction)

8 ANT-ON O Power control for amplifier.

9 MONO O Force MONO output (Not used.)

10 SD I SD signal input

11 BAND-SW I Band plan setting of general area.

12 AREA1-SW I Destination select 1

13 AREA2-SW I Destination select 2

14, 15 RE1, 2 I Rotary encoder input 1, 2

16 SEEK O SEEK output

17 – 20 NC — Not used.

21 GND3 — Ground

22 – 24 KEYIN3 – 1 I A/D key input 3 – 1

25 ROT-IN I Rotary commander input

26 S-METER I FM and MW/LW common signal meter A/D conversion input.

27 TEST-SW I TEST mode select input

28 AM-IFC I MW/LW center frequency input

29 FM-IFC I FM center frequency input

30 VDD2 — Power supply (+5 V)

31 VCOH-FM I Local oscillation frequency input (FM)

32 VCOL-AM I Local oscillation frequency input (MW/LW)

33 GND2 — Ground

34 NC — Not used.

35 EO1-PDOUT O Error out output

36 TESTO — Fixed at “L”.

37 AM-ON(TU-ON) O MW/LW power output (MW/LW select)

38 FM-ON(FM/AM) O FM power output (FM select)

39 LCL/DX O LOCAL/DX select (“H” : LOCAL, “L” : DX)

40 BEEP O BEEP output

41 ACC-IN I Accessory input

42 SCOR I SUBQ data read request

43 MUTE O System mute output

44 AMP-MUTE O Power amplifier mute output

45 TEL-MUTE O Telephone mute output

46 NC — Not used.

47 VOL-CE O Electric volume chip select

48 VOL-CLK O Electric volume serial clock

49 VOL-DATA O Electric volume serial data

50 EMPHO O De-emphasis control output

51 PW-ON O System power control

52 MD-ON O Loading motor power

53 CD-ON O Servo drive power

54 ILL-ON O Illumination output

55, 56 MOD1, 2 O Bus boost control 1, 2

57 NC — Not used.

58 LCD-CE O LCD drive chip select output

SECTION 4

DIAGRAMS

– 20 –

Pin No. Pin Name I/O Pin Description

59 EZ-SEL I SHIFT + input

60 SENS I Information input from servo IC.

61 FOK I Focus OK input

62 LD-ON O Laser diode control

63 NC — Not used. (Connect to GND.)

64 ST/MONO I/O Used for both STEREO indicator display input and force MONO output. (FM)

65 LCD-CKO O LCD driver serial clock output

66 LCD-SO O LCD driver serial data output

67 C.ALARM O Caution alarm output

68 SQ-CKO O Q data read serial clock output

69 CD-RST O Servo IC/DAC reset output

70 SQ-SI I Q data input

71 CD-SO O Serial data output to servo IC.

72 CD-LAT O Data latch output to servo IC.

73 CD-CKO O Serial clock output to servo IC.

74 VREF — Not used.

75 GND1 — Ground

76 X-OUT — Crystal oscillator connection (4.5 MHz)

77 X-IN I Crystal oscillator connection (4.5 MHz)

78 BU-IN I Back-up detection

79 VDD1 — Power supply (+5 V)

80 RESET I RESET input

4-4. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 22 forWaveforms and Note. • Refer to page 37 for IC Block Diagrams.

CDX-3250

– 25 – – 26 –

(Page 33)

(1/2)

Note:

• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolytics

and tantalums.

• All resistors are in Ωand 1/4W or less unless otherwise

specified.

•U: B+ Line.

• Powervoltageisdc 14.4V and fedwith regulated dc power

supply from ACC and BATT cords.

•C: panel designation.

• Voltage is dc with respect to ground under no-signal

(detuned) condition.

no mark : FM

< > : CD PLAY

• Voltages are taken with a VOM (Input impedance 10 MΩ).

Voltage variations may be noted due to normal production

tolerances.

4-6. SCHEMATIC DIAGRAM — DISPLAY SECTION —

CDX-3250

– 29 – – 30 –

(Page 36)

CNP552

D561-D578 SML-010YT-T86 (AMBER)

SML-010PT-T86 (GREEN)

GREEN AMBER

CDX-3250

Note:

• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolytics

and tantalums.

• All resistors are in Ωand 1/4W or less unless otherwise

specified.

•¢: internal component.

•C: panel designation.

•U: B+ Line.

• Powervoltageisdc 14.4V and fedwith regulated dc power

supply from ACC and BATT cords.

• Voltage is dc with respect to ground under no-signal

(detuned) condition.

no mark : FM

( ) : MW

< > : CD PLAY

∗: Impossible to measure

• Voltages are taken withaVOM(Input impedance 10 MΩ).

Voltage variations may be noted due to normal production

tolerances.

• Signal path.

F: FM

f: MW

J: CD

4-8. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 39 for IC Block Diagrams.

– 33 – – 34 –

(Page 26)

TU1

TUNER UNIT

CDX-3250

4-9. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 34 for Note. • Refer to page 39 for IC Block Diagrams.

– 35 – – 36 –

ELECTRICAL

VOLUME

(Page 29)

POWER REM

(REMOTE IN)

FRONT L-CH –

REAR L-CH –

REAR L-CH +

REAR R-CH –

REAR R-CH +

FRONT L-CH +

FRONT R-CH –

FRONT R-CH +

AMP ANT/REM

– 37 –

• IC Block Diagrams

IC1 CXD2507AQ

IC3 BA6796FP

XLON

SPOD

SPOC

SPOB

SPOA

CLKO

VDD

CNIN

SEIN

CLOK

XLAT

XLTO

DATO

5455

5657

58596061

SERVO AUTO

SEQUENCER

DATA

XRST

SENS

MUTE

SQCK

SQSO

EXCK

SBSO

SCOR

VSS

WFCK

EMPH

DOUT

C4M

FSTT

XTSL

XTAO

XTAI

MNTO

20 21 22 23 24 25 26 27 29 30 31 3228

LRCK

PCMD

BCLK

GTOP

XUGF

XPCK

VDD

GFS

RFCK

C2PO

XROF

MNT3

MNT1

FOK

MON

MDP

MDS

LOCK

TEST

FILO

FILI

PCO

VSS

AVSS

CLTV

AVDD

BIAS

ASYI

ASYO

ASYE

WDCK

CPU

INTERFACE

SUB CODE

PROCESSOR

DIGITAL

CLV

EFM

DEMODULATOR

DIGITAL

PLL

ASYMMETRY

CORRECTOR

5D/A

INTERFACE

ERROR

CORRECTOR

16K

RAM

DIGITAL

OUT

CLOCK

GENERATOR

123 4 5678

910 11 12 13 14

OPOUT

CH4-IN

CH4

CTL1

CTL2

FWD

REV

TRAY

GND

CH3 –

CH5 –

COM

CH4 +

CH3 +

CH3-IN

CH3

VREF

CH2

CH2-IN

VCC

CH1 –

CH2 –

CH1-IN

OP IN –

CH1

CH1 +

OP IN +

CH2 +

DRIVE

BUFFER

DRIVE

BUFFER

DRIVE

BUFFER

DRIVE

BUFFER

DRIVE

BUFFER

DRIVE

BUFFER

DRIVE

BUFFER

DRIVE

BUFFER

DRIVE

BUFFER

LEVEL

SHIFT

LEVEL

SHIFT

LEVEL

SHIFT

LEVEL

SHIFT

THERMAL

SHUT

DOWN

161718

1920

2425

LOGIC

CTL1 CTL2 FWD REV

V/I

– 38 –

IC2 CXA1782BQ

36 35 34 33 32 31 30 29 28 27 26 25

987

PHD 2

PHD 1

PHD

RF O

RF I

CC1

CC2

FOK

SENS

C.OUT

XRST

DATA

XLT

CLK

VCC

ISET

SL O

SL M

SL P

TA O

TA M

FSET

TG2

TGU

SRCH

FE O

FLB

FGD

FDFCT

FE M

FEI

FEO

FE BIAS

VEE

TED

LPFI

TEI

ATSC

TZC

TDFCT

APC LEVEL S

FOK

MIRR

RF IV AMP1

RF IV AMP2

FE AMP

TTL

IIL

FZC COMP

DFCT

IIL

TTL

IIL DATA REGISTER INPUT SHIFT REGISTER

ADDRESS DECODER

OUTPUT DECODER

TTL

IIL

TOG1-3

BAL1-3

FS1-4 TG1-2 TM1-7 PS1-4

F IV AMP

E IV AMP

BAL1

BAL2

BAL 3

TE AMP

TZC COMP

DFCT

TM1

DFCT

FS4

ATSC

WINDOW COMP

TOG1

TOG2

TOG3

FCS PHASE

COMPENSATION

FS1

F SET

TG2

TM7

TM3

TM4

TM5

TM6

ISET

TRACKING

PHASE

COMPENSATION

HPF COMP LPF COMP

TG1

FS2

TM2

RF M

– 39 –

IC402 TDA7385

IC401 LC75374E

–

DECODER LATCH SHIFT

CONTROL

–

12 3 45 6 7 8 9 10

2324

2627282930313233

LSELO

VDD

RSELO

RVRIN

RCOM

RT1

RT2

RT3

RTOUT

RSIN

RSB1

RSB2

RFIN

RFOUT

RROUT

VSS

VREF

LROUT

LFOUT

LFIN

LSB2

LSB1

LSIN

LTOUT

LT3

LT2

LT1

LCOM

LVRIN

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

TAB

PW-GND

OUT2–

ST-BY

OUT2+

Vcc1

OUT1–

PW-GND1

OUT1+

SVR

IN1

IN2

S-GND

IN4

IN3

AC-GND

OUT3+

PW-GND3

OUT3–

Vcc2

OUT4+

MUTE

OUT4–

PW-GND4

DIAGNOSTICS OUT

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