cdx 4250rv djvu

CDX-4250RV

SERVICE MANUAŁ

AEP Model UK Model

Model Name Using Similar Mechanism	CDX-C570R/C580R
CD Drive Mechanism Type	MG-363T-121
Optical Pick-up Name	KSS-521A

SPECIFICATIONS

CD player sectlon		Power amplifier section
System	Compact disc digital audio	Outputs	Speaker outputs
	system		(surę seal connectors)
Signal-to-noise ratio	90 dB	Speaker impedance	4-8 nłmis
Freąuency response	10 - 20,000 Hz	Maximum power output 35 W x 4 (at 4 ohms)
Wow and flutter	Below measurable limit
		General
Tuner section		Outputs	Lineoutput(l)
FM			Power aerial relay control
Timing rangę	87.5 -108.0 MHz		lead
Aerial terminal	Extemal aerial connector		Power amplifier control
Intermediate freąuency	10.7 MHz		lead
Usable sensitivity	12 dBf		Telephone ATT control
Selectivity	75 dBat 400 kHz		lead
Signal-to-noise ratio	65 dB (stereo),	Tonę Controls	Bass ±8 dB at 100 Hz
	68 dB (mono)		Treble ±8 dB at 10 kHz
Harmonie distordon at 1	kHz	Power reąuirements	12 V DC car battery
	0.8% (stereo),		(negative ground)
	0.6% (mono)	Dimensions	Approx. 178 x 50 x 185 mm
Separation	35 dB at 1 kHz		(w/h/d)
Freąuency response	30-15,000 Hz	Mounting dimension	Approx. 182 x 53 x 162 mm
			(w/h/d)
MW/LW		Mass	Approx. 1.2 kg
Tuning rangę	MW: 531 -1,602 kHz	Supplied accessories	Parts for installation and
	LW: 153-281 kHz		connections (1 set)
Aerial terminal	Extemal aerial connector		Front panel case (1)
Intermediate freąuency	10.7 MHz/450 kHz
Sensithrity	MW: 30 iiV	Design and specifications are subject to change without
	LW:50^iV	notice.

MICROFILM

FMMWI1W COMPACT MSCPUNER

SONY.

®

TUNER SECTION (Page 25)

OPTICAL PICK-UP KSS-521A

RFAMP, SERV0 CONTROL IC2

DIGITAL SIGNAL PROESSOR IC1

D/A CONVERTER IC702

M903

(LOADING)

Signal path

^>: CD

04

CNJ600

(ANTENNA)

-25

26-

SYSTEM CONTROL IC601 (3/3)

LCD DRIVE IC501

BAnf

LCD POWER CONTROL Q901,902

+10V REG Q903

LCDS01

LED502,604,606,S08,510 LSW511-529

D510,511

&

D512,513

+10V

KEY MATRIX LSWS11-S29 S502

KEY ACTIVE Q914,915

A

V.

D916

T\/ n CNP802 *-' ^N{REMOTEIN)

V-

4-5. CIRCUIT BOARDS LOCATION

THIS NOTĘ IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.

(In addition to thla, the necessary notę is prlnted In each błock.)

for schematic diagram:

•    Ali capacitors are inp.Funlessotherwise noted. pF: jj+łF 50 WV or less are not indicated except for electrolytics and tantalums.

•    Ali resistors are in O and ¹A W or less unless otherwise specified.

•    %    : indicates tolerance.

•    a    : intemal component.

•    i i : panel designation.

Notę: The components identified by mark A or dotted linę with mark A are critical for safety.

Replace only with part number specified.

•    IB + I : B+ Linę.

•    Power voltage isdc 14.4V and fed with regulated dc power supply from ACC and BATT cords.

•    Voltages are taken with a VOM (Input impedance 10 MO). Voltage variations may be noted due to normal produc-tion tolerances.

•    Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-tion tolerances.

•    Circled numbers refer to waveforms.

•    Signal path. c> : FM

: MW ^    : CD

•    Abbreviation

G : German model.

for printed wiring boards:

•    o : parts extracted from the component side.

• -: parts extracted from the conductor side.

•    o ; Through hole.

•    siiS: Pattem from the side which enables seeing.

(The other layer’s pattems are not indicated.)

Caution:

Pattem face side: Parts on the pattem face side seen from the (Side B)    pattem face are indicated.

Parts face side: Parts on the parts face side seen from the (Side A)    parts face are indicated.

•    Abbreviation

G : German model.

• Waveforms (MODE:PLAY)

IC2 CD (FEO)

IC2 © (RFO)

Approx. 2DDmVp-p

IC2 @ (TEO)

~~r

2.6Vp-p

7.6jisec

IC1 © (MDP)

JITLH

22.7psec

IC1 ® (LRCK)

®

IJUliTr-

IC1 @ (BCK)

-|474nsec

16.89MHz

IC1 © (XTAI)

6

8

9

10

11

12

J_13_L

14

J_15_L

16

18

H

9fl

(OISC IN)

1	SELF-SN/WFCK
2	LfiON
3	oc
4	FOK
5	IN_SW/SBS0
4	SERWO 5V
7	SERWO SW
B	CL0K25
	BNO
10	KLAT25
11	l_SV
12	C.0UT
13	bck eoun
14	BATA25
15	PCNB
14	XRST0
17	LRCK (HB2)
18	SENS
	BNO <H0
20	S0CK
21	NB BW
22	soso
23	REW ILOAtt
24	SCOB
25	FWBEJECD
24	EXCK
27	CTL2
28	C14HIN
29	CTLI
30	OFS

NAIN BOARS (_{Page 39})

XD

Notę:

• Voltage and wave1brms are dc with respect to ground under no-signal conditions. no mark : CD PLAY

*    : Impossible to measure

-33

34-

4-9. SCHEMATIC DIAGRAM — MAIN SECTION (1/3) — • Refer to page 51 for IC Błock Diagrams. _]_I_?_|_3_|_4_|_5_|_6_|_7_|_8_L

J_lo_L

H

9

11

|    12    |    13    |    14    |    15    |    16    |    17    |

18

i

S°

S

NAIN BOARB (2/9

(Page 42)

NAIN 90ARBB/9

(Page 43)

Notę:

• Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM (    )    :    MW

<    >    :    CD PLAY

-39-

-40-

nain Bo*™ o/s (Page 43)

Notę:

• Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM (    ): MW

<    > : CD PLAY

Notę:

• Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM (    )    :    MW

<    >    :    CD PLAY

4-12. SCHEMATIC DIAGRAM — DISPLAY SECTION —

_1_|_?_|_3_|_£

8

10

11

12

13

B

H

MAlN BDARO (3/3 CNPGOO

(Page 44)

Notę:

• Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM

-45 46-