Sony CDX-MP40 service manual Block Diagram Display Section, Waveforms Servo Board, Main Board

CDX-MP40

3-5. BLOCK DIAGRAM — DISPLAY SECTION —
							IC901
						LCD DRIVER
			IC801 (2/2)			(US,Canadian MODEL)
			SYSTEM CONTROL			(AEP,UK MODEL)
AEP,UK :S902,903,931,LSW901(1/2),904(1/2)-910(1/2)		5	KEY IN0
US,CND:S901,903,931,LSW901(1/2)-907(1/2)
FUNCTION SWITCH
							S1	1
							I	I
				LCDSO 18		78 DATA	S64 64
				LCDCKO 20		77 CLK		LCD901
AEP,UK :S911,LSW912(1/2)-922(1/2)				LCDCE 19		76 CE		LIQUID
								CRYSTAL
US,CND:S902,LSW908(1/2)-917(1/2)		4	KEY IN1
								DISPLAY
FUNCTION SWITCH
							COM1 65
							COM4 68
D809
Q803		26 KEY ACK
KEY
DETECT
		91 XKEYON		DOOR	75
				IND				LED930,931
D807						BATT	DOOR IND
							SW
		98	RC IN1				Q923,924
CNP801
		6	RC IN0
(REMOTE IN)
						Q919		ILL B+
				ILLON 92
						ILL ON
IC951(US,Canadian MODEL)						SWITCH		AEP,UK :LED933,934
								US,CND:LED910,911
IC971(AEP,UK MODEL)						BATT	Q918	(LCDLIGHTBACK )
REMOTE	2	29 SIRCS					ILL B+
CONTROL							SWITCH
RECEIVER								AEP,UK :LED903,911,951-954,LSW901(2/2),
								904(2/2)-910(2/2),912(2/2)-922(2/2)
		34 NOSE SW						US,CND:LED901-906,LSW901(2/2)-917(2/2)
S802								KEY
(NOSE DET)								(ILLUMINATION)
		15 XIN		OSC OUT 12		X801
X802
						18.432MHz
32.768kHz				OSC IN	13
		16 XOUT

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

(In addition to this, the necessary note is printed in each block.)

for schematic diagram:

•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 Ω and 1/4 W or less unless otherwise specified.

•% : indicates tolerance.

•f : internal component.

•C : panel designation.

Note:	Note:
The components identi-	Les composants identifiés par
fied by mark 0 or dotted	une marque 0 sont critiques
line with mark 0 are criti-	pour la sécurité.
cal for safety.	Ne les remplacer que par une
Replace only with part	piéce portant le numéro
number specified.	spécifié.

•A : B+ Line.

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

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

F : FM

f : AM/MW/LW

J : CD

c : CD-R/RW (MP3)

for printed wiring boards:

•X : parts extracted from the component side.

•Y : parts extracted from the conductor side.

•x : parts mounted on the conductor side.

•a : Through hole.

• : Pattern from the side which enables seeing. (The other layer’s patterns are not indicated.)

Caution:

Pattern face side: Parts on the pattern face side seen from the

(Side B) pattern face are indicated.

Parts face side: Parts on the parts face side seen from the

(Side A) parts face are indicated.

• Waveforms

— SERVO Board —

(MODE: CD PLAY)

1	1V/DIV,20ns/DIV
	59 ns	2.8 Vp-p
	IC1 wd (XTAL)
2	500mV/DIV,1∝s/DIV
		1.7 Vp-p
	IC1 uj (RFO)
3	100mV/DIV,20∝s/DIV
	Approx. 200m Vp-p
	IC1 oa (FEO)
4	100mV/DIV,20∝s/DIV
	Approx. 300m Vp-p
	IC1 od (TEO)
5	1V/DIV,40ns/DIV
	82 ns	1.2 Vp-p
	IC3 yd (XTAL)

— MAIN Board —

6		2V/DIV,100ns/DIV
	230 ns	5.5 Vp-p
	IC601 4 (OSCD)
7		2V/DIV,40ns/DIV
	54 ns	3.2 Vp-p
	IC801 qs (OSCOUT)
8		2V/DIV,20∝s/DIV
	30.5 ∝s	3.8 Vp-p
	IC801 qh (XOUT)

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