Sony MZ-E505 service manual

MZ-E505

6-7. SCHEMATIC DIAGRAM – MAIN Board (3/3) – • See page 25 for Waveform. • See page 31 for IC Block Diagrams.

(Page 28)

B4	B6	B5	B3	B2		B1
(3/3)
					R811	TP815	CN801
						(LED ADJ)	6P
					1
C1							LEDVDD

LED R PWM

LED R PWM

LED G PWM

LED G PWM

SET KEY

SET KEY1

XWK1

WK DET

C803

SWITCH

BOARD

C201

R9221

150k

C104	C204	C101
6800p	6800p	1

C2

C302

0.1

(Page 29)

C102	R107	C106
	10	22
220
2.5V
R103	R106
4.7k	6.8k
R203	R206
4.7k	6.8k
C202	R204	C203
220
2.5V	10	0.22

C3	R819	1M	FB801
RMC DTCK	R817 100

C4	RMC KEY
C5
		FB802
C6	R818
	100

D855

MAZZ068H01S0

S808

HOLD

OFF ON

XHOLD SW

S809

(OPEN/CLOSE DETECT)

OPEN

C804

0.01

TAP801

		R205
		100k
	R301	R105
	33	100k
RB301	C301
33k	10
X4	6.3V

C303

1

R303

220k

HEADPHONE AMP

IC301

TA2131FL(EL)

C304

4.7 6.3V

R302

6.8k

C305

2.2

C306

22 4V

D201	D101	C351	C854	C853
02DZ2.4-Z	02DZ2.4-Z
		100p	0.1	6800p
(TPH3)	(TPH3)

470p

Q301

2SC4738F

-Y/GR(TPL3)

REFERENCE

VOLTAGE

SWITCHING

C851

0.1

GND

XHP STB

MUTE

BEEP

J301

RVDD

DATA

KEY

RGND

COM

L

R

C994

100p

C955	(CHASSIS)
0.1

(CHASSIS)

30 30