Sony CDX-GT550, CDX-GT50W, CDX-GT500EE service manual Block Diagram Display Section, DISP+3.3V

CDX-GT50W/GT500/GT500EE/GT550

3-3. BLOCK DIAGRAM — DISPLAY SECTION —

SYSTEM CONTROL

IC711 (3/3)

FL900

VACUUM

FLUORESCENT

KEY MATRIX

41 KEYIN0

T620

DISPLAYS

ENC902,LSW901–905,

RECT

DC–DC CONVERTER

907–909,S801,908,911–921

40 KEYIN1

BATT

TRANSFOMER

D624

37 F+

D712

38 F+

DC/DC

39 F+

KEY ACKNOWLEDGE

CONVERTER

SWITCH

52 KEY ACK

IC620

RECT

ENC902

Q710

1

F–

D622

ROTARY

1

IN

2

F–

ENCODER

76 XKEY ON

2

FB

3

F–

BATT

31 RE IN0

J530

32 RE IN1

OSCILLATOR

BATTERY

34 VDD2

71 RCIN1

FREQUENCY

MAIN

(REMOTE IN)

CHECK

BATTERY CHECK

E

43 RCIN0

DDC ON

COUNT SWITCH

Q641,643

SECTION

DISP+3.3V

31 VDD1

5

VCC

BATT

SWITCH

Q620

(Page 18)

Q623,642

BU+3.3V

10K

FL ON 19

OUT

4

S710

)

( FREQUENCY

3 AREASEL0

SELECT

9K

OSCILLATOR

FSW OUT 66

FREQUENCY

7

CT

SHIFT CONTROL

GT550

Q621,622

		5 NOSE SW
PANEL+B	S600
	(NOISE DET)	FSW IN 10

LED900–915,

LSW901–905,

DOOR

907,908

DISPLAY CONTROL

INDICATOR

BATT

IC901

SWITCH

Q601

DISP+3.3V

RESET

LED802,803

IC971

(Page 18)

63 DOOR IND

FS SO3 54

21 SI3

FS SO2 41

22 SI2

MAIN

D

RESET

14 RESET

FS SO1 51

23 SI1

SECTION

D711

D710

CD

C

SYS RST

DISP RSET 18

SECTION

22 SYS RST

FL CKO1 52

24 CLK

(Page 17)

RESET

DISP RX 27

25

BUS TX

FL CKO2 42

FL CKI3 55

GCP SELECT

IC710

DISP TX 28

26

BUS RX

IC902

MAST IF 29

18 MAS IF

BU+3.3V

2

VDD VOUT

1

77 RESET

S700

GCP1 30

1

RESET

DISP FLASHW 67

8

FLMD0

							GCP2 47	2
	REMOTE CONTROL							11	28 GCP
	SIGNAL RECEIVER
	IC900						GCP3 45	4
IR	OUT 2	64	SIRCS			12	X1
						X901
						5MHz	GCP4 57	5
						13	X2
	X711	79	XIN
	32.678kHz	80	XOUT		DISP		LATCH 37		29 LAT
				BU+5V	VDD+3.3V	DISP+3.3V
					REG
		82	OSC OUT		IC600		FBK 39		30 BK
	X710						EDGE TGR1 27
							EDGE TGR2 50
	18.432MHz		DISP ON	20
		83	OSC IN				GCP TGR3 46
							GCP TGR4 58

CDX-GT50W/GT500/GT500EE/GT550

19 19