Toshiba 14N21NS service manual Block Diagram

VOL UP

BLOCK DIAGRAM

AT+5V

MAIN W/T.TEXT

VOL DOWN

TU001

IC101 OECF004A

SCL SDA

BPL

AGC

Q102

IF

LED SW

40

ON_TIMER

CH UP

4

5

7

1

11

D105

Q103

KEY_IN

56

CH DOWN

ON TIMER

LED SW

I2C

P.CON+5V

37

AVDD1

SDA 13

5

SDA

CHROMA

STAND BY

SCL

14

6

SCL

IC201

STV2246C

8

6

7

27

AVDD2

OSD-B

9

34

OSD-B

PIFIN1

AT+5V

21

AVDD3

MEMORY

OUTAGCRF

PIFIN2

OSD-G

10

35 OSD-G

51

SCL

IC199 S-24C04BDP-LA

OS101

OSD-R 11

36 OSD-R

1

57

REMORT

CVBS2

29

29 CVBSOUT1

VERT 47

50

OSC_OUT

CVBS1

30

X602

39

XTAL2

SDA 52

X101

AV1

7

40

XTAL1

4MHz

3.579545MHz

H_OUT 48

51

OSC_IN

X601

4.433619MHz

B.OUT

30

12

VCC_IF

G.OUT

31

P.CON+5V

53

VCC_D

R.OUT

32

P.CON+8V

45

VCC1

17

VCC2

G_EXT/Y_EXT 27

B_EXT/U_EXT 26

11

FM_OUT

R_EXT/V_EXT 25

Y/CVBS_IN3

22

						55	AUDIO_OUT
								INT_CVBS_OUT 13
						14	EXT_AUDIO_IN		CVBSIN2	20
				2			J701
				3	J1001
						R OUT	1	19 VIDEO OUT
				1
						L OUT		20	VIDEO IN
							3
SOUND AMPIC
IC1001			8	SPEAKER		R IN	2	7	21-B IN
AN7511
	2			SP1001		L IN	6	11	21-G IN
			6
		+						15	21-R IN
SOUND+B	5	Vcc
							AUDIO_SW
							IC703		NJM2233	7
									2
							1	Vin1	SW	Vout
										Vin2	3

V-DRIVE

IC401 TDA8714A

	Vs	10	P.CON+25V
	POWER OUTPUT	1			DY
3 TRIGGER INPUT
I2C
Q402	Q401			FB401
H.DRIVE	H.OUTPUT			1	2	+B
	Q803	J801			3	P.CON+25V
	BULE OUT	3	F	F
	Q802
	GREEN OUT	9	8	S	HV
	Q801
	RED OUT	7

FRONT VIDEO

J702

3

1

2

FRONT AUDIO

J703

3

1

2

CRT V801

SW TRANS	Q501
T501
5	D	POWER
		SW TR
9	SOUND+B
12	+B
15	P.CON+8V
16	AT+5V
	P.CON+5V

E-1 E-2