Sanyo 1430MA Schematic

TMPA 8823-5VA4 SERVICE

MANUAL

CONTENT

(1) General-----------------------------------------------------------------------------1 (2) Frame Chart-------------------------------------------------------------------fig.1 (3) IC Function Introduction ------------------------------------------------------1

3.1 N501 TMPA8823-----------------------------------------------------2

3.2 N002 ST4053 ----------------------------------------------------------3

3.3 N301 LA78040 ------------------------------------------------------------4

3.4 N601 AN7522----------------------------------------------------------4

2

(4) I

(5) IC Voltage --------------------------------------------------------------8 (6) Trouble shorting------------------------------------------------------------------9

C Bus Control ------------------------------------------------------------------5

4.1 Menu Entry -------------------------------------------------5

4.2 Item Introduction -----------------------------------------------------------5

1

ST4053

AN7522

LA78040

BSC24-3360-4P

(1) General

This chassis is consists of main IC TMPA8823-5VA4, ST4053. TMPA8823-5VA4 is an integrated circuit for a PAL TV. A MCU and a TV signal processor (SP) are integraed in a 64-pin shrink DIP package. The MCU contains 8-bit CPU,ROM,RAM,I/O ports,timer/counters, A/D converters,an on-screen display controller,remoter control interfaces,IIC bus interfaces. The TV signal processor contains PIF,SIF,Video,multi-standard chroma,Sync,RGB processors.

(2) Frame Chart (see fig.1)

→

TUNER TDL-3N1

AV/TV SWITCH

AUDIO POWER

PIF/SIF R, G, B

VT/BL BH/RF AGC

TMPA 8823

CRT

OSCILLLLATION

2SC3619 X 3

VM

V-OUT

H-OUT

ST1803DF

SCAN

TRANSFORMER

+115V +25V +19V

∽220V +13

ON/OFF POWER

C5299

fig.1

1

Icon

Description

MUTE

2

Mute Output

KEY

3

Key input

RESET

5

Reset signal input

XOUT

6

8 MHz oscillator connection

TEST

8

GND connection

DVDD

9

5V power supply

TV GND

11

GND terminal for Analog block

FBP IN

12

Input terminal for FBP

H.AFC1

14

H AFC filter connection

V.SAW

15

Terminal to be connected capacitor to generate V saw signal

H.Vcc(9V)

17

Vcc terminal for DEF circuit

NC

18

No use

Cb in

19

Input terminal for Cb signal

Y in

20

Input terminal for Y signal

Cr in

21

Input terminal for Cr signal

DIG GND

22

GND terminal for Digital block

V2 in

24

Input terminal for Video signal

DIG Vdd

25

Vcc terminal for Digital block

ABCL in

27

Input terminal for ABL/ACL control

EW out

28

Output terminal for east-west correction singal

TV out

30

Detected PIF signal output terminal

SIF out

31

Detected SIF signal output terminal

PIF PLL

35

Loop filter for PIF PLL connection

IF Vvv(5V)

36

Vcc terminal for IF circuit

DE-EMP

38

Terminal to be connected capacitor for SIF Det De-Emphasis

IF AGC

39

IF AGC filter connection

(3) IC Function Introduction

3.1 N501 TMPA8823-5VA4 Function: MCU and SP

SDA2 1 IIC bus serial data input/output

DVSS 4 GND connection

XIN 7 8 MHz oscillator connection

VVSS 10 GND connection

H.OUT 13 Horizontal driving pulse output

V.OUT 16 Vertical driving pulse output

C in 23 Input terminal for Chroma signal

CW out 26 Output terminal for fsc wave signal

IF Vvv(9V) 29 Vcc terminal for IF circuit

DC NF 34 Terminal to be connected capacitor for DC Negative feedback

REG FIL 37 Terminal to be connected capacitor for stabilizing internal bias

IF GND 40 GND terminal for IF circuit

2

IF IN

41

Input terminals for IF signals

IF IN

42

Input terminals for IF signals

RF AGC

43

RF AGC control level output

YC Vcc

44

Vcc terminal for Y/C circuit

Vsm out 45 Output terminal for Vsm signal

Black DET

46

Terminal to be connected with Black Det filter for black stretch

APC Filter

47

Terminal to be connected with APC filter for Chroma demodulation

RGB Vcc

49

Vcc terminal for RGB circuit

R OUT

50

Output terminal for R signal

B OUT

52

Output terminal for B signal

TV GND

53

GND terminal for Analog block

A VDD

55

5V power supply

NC

56

SCL1

58

IIC bus serial clock input

NC

59

SCL2

61

IIC bus serial clock input

SYNC

62

Horizontal sync signal input

REMOTE

63

Remote controller signal input

POWER

64

Power control (On=Hi. Off=L)

Name

Function

RinV2

1

This pin is for input a right audio signal from an external source(V2 channel)

RinV1

2

This pin is for input a right audio signal from an external source(V1 channel)

VinV2

3

This pin is for input a composite video signal from an external source(V2 channel)

Vout

4

This pin is for output main channel composite video signal.

VinV1

5

This pin is for input a composite video signal from an external source(V1 channel)

BAND1

6

This pin is for output band1 to control tuner.

GND

7

This is the GND pin.

GND

8

This is the GND pin.

LinV1

12

This pin is for input a left audio signal from an external source(V1 channel)

LinV2

13

This pin is for input a left audio signal from an external source(V2 channel)

Lout TV

14

This pin is for output left audio signal.

Rout TV

15

This pin is for output right audio signal.

Vcc

16

This is the power supply pin. Apply 9V to this pin.

IK IN 48 Sense ACB cathode current input

G OUT 51 Output terminal for G signal

A GND 54 GND connection

SDA1 57 IIC bus serial data input/output

VT 60 VT output

3.2 N001\N002 ST4053 Function: I2C bus control , Audio/Video switching IC

BAND2 9 This pin is for output band2 to control tuner. BAND2 10 This pin is for output band2 to control tuner. BAND2 11 This pin is for output band2 to control tuner.

3

FUNCTION

1

Vertical feedback

2

Vertical working power supply

7

Vertical drive signal input

Name

Function

Gnd

3

Ground

Mute

5

Standby

L In

6

Audio signal L input

Gnd

7

Ground

R In

8

Audio signal R input

Volume

9

Sound volume DC level 1 control

R Out

10,12

Sound siqnal output

Gnd

11

Ground

Comment

int

Max

1 2 RCUT

R CUTOFF

2C

FF

20 R Cut off 00:-0.65V, 80:0V, FF:0.65V

GCUT

G CUTOFF

20

FF

20 G Cut off 00:-0.65V, 80:0V, FF:0.65V

BCUT

B CUTOFF

47

FF

20 B Cut off 00:-0.65V, 80:0V, FF:0.65V

GDRV

G DRIVE

3B

7F

40 G Drive Gain 00:-4.5dB, 40:0dB, 7F:3.5dB

BDRV

B DRIVE

37

7F

40 B Drive Gain 00:-4.5dB, 40:0dB, 7F:3.5dB

CNTX

SUB CONTRAST

7F

7F Unicolor 00:-20dB, 40:-5dB, 7F:0dB

BRTC

SUB BRIGHT CEN

51

7F

50 Brightness 00:1.5V(pedestal level), 40:2.5V,

COLC

2C

7F

40 Color 00:color mute, 01:-22dB or less, 7f:5.7dB

TNTC

SUB TINT CEN

40

7F

40

Tint: 00:-35°, 40:0°, 7F:35°

COLP

PAL SUB COLOR

00

7F

00

3.3 N301 LA78040 Function:

V-scan output

3 Pump power supply 4 Ground 5 Vertical output 6 Vertical protection

3.4 N601 AN7522 Function: Audio power amplifier

Vcc 1 L Out

2，4

Sound working voltage （+12V） Sound siqnal output

(4) I2C Bus Control

4.1 Menu Entry

Press “D” button on the factory remote control to enter the “D” mode, the letter “D” will be displayed at the upper

right coner and the adjusting items will be displayed at the upper left conrer. Press the channel +/- to select the preferred item; press the volume +/- to adjust the value of each item.

4.2 Item introduction

TMPA8823/5VA4 BUS DATA

4