Sony MEX-5DI service manual Circuit Boards Location, Waveforms Servo Board, Main Board

4-6. CIRCUIT BOARDS LOCATION

SERVO board

SWITCH board

MAIN board

DISPLAY board

DIGITAL board

MEX-5DI

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

• Waveforms

— Servo Board —

(MODE: CD PLAY)

1		5
	0.7Vp-p	3.5Vp-p
		22.7µsec
IC2 qg (RFAC)		IC1 ih (LRCK)
2		6
	0V	3.8Vp-p
Approx. 200mVp-p		474msec
IC2 qh (FE)		IC1 o; (BCK)
3		7
		3Vp-p
	0V
Approx. 600mVp-p		16.9344MHz
IC2 qk (TE)		IC1 of (XTAO)
4		8
	3.3Vp-p	2.2Vp-p
7.6µsec		12.288MHz
IC1 rd (MDP)
		IC11 yg (XTXAL)

— Main Board —

1

2.8Vp-p

4.332MHz

IC101 4 (OSCO)

2

2.2Vp-p

32.768kHz

IC501 uf (X0A)

3

2.8Vp-p

3.68MHz

IC501 os (X0)

4

3.5Vp-p

4MHz

IC901 4 (XOUT)

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.

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