Intercon 32LD350 Diagram

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Page 1

32LD350 INTERCONNECT DIAGRAM

To Back Light

Pin 4 of T103 ~ T110

Warning: Over 1.2Kv To each Backlight.

To Back Light

Pin 1 of T103 ~ T110

2Msec per/div

44V p/p 120Hz

50% P-DIM

Pin 3 of T103 ~ T110

2Msec per/div

2.6V p/p 120Hz 50% P-DIM

Ballast

T110

232

Q107

Q101

232

Q103

Q109

Q104

Q108

CN1

Diode

Check

All pins

Open

Except Gnd

T109

T108

T107

Q110

Q106

CN1

F101

24V 7A

T106

T105

232

T104

U201 U2

T103

L101

P203 "SMPS" to CN1 "Inverter PWB"

Pin Label STBY Run

1,2,3,4,5

6,7,8,9,10

24V 0V

Gnd

(3)

Error_Out

INV_ON

(4)

A-DIM

(5)

P-Dim

Red lead Open

Blk lead 0.9V

VOLTAGES Q110 Q106

Q103 Q109

Q104 Q108

Q107 Q101

Put the 3 screws

in on the right

side for service

position.

24.19V Open

Gnd

0.59V

3.31V

2.46V

P201 “SMPS” to P402 "Main PWB"

Pin Label STBY Run Diode

(1)

10V

2-4

5-8

9-12

13-16

PWR_ON

24V

Gnd

3.5V

Gnd

12V

Gnd

3.41V

Gnd

24.19V

11.96V

P203

F101

Diode

Check

232

Gnd

4.5V

Gnd

9.03V

4.58V

24.16V

9.03V 0V

Gnd

9.03V

4.58V

24.16V

9.03V 0V

Gnd

24.07V

Diode

Open

Cold

IC101

Hot

5A / 250V

Hot Gnd (Shock Hazard)

Gnd

T101

Q102

Q101

F100

LF102

SK100

Key 1 / 2 Voltage and Resistance

Chart with buttons pressed.

Resistance

5.27M

0.98M

Resistance

5.27M

0.98M

Voltage and Resistance taken

No Button pressed Resistance is

Key 1

Function

17M 10M

with AC applied to the set.

Vol +

Vol Menu Enter

Key 2

Function

CH +

CH -

Power

Input

Open and Voltage is 3.4V

Pin Label STBY Run Diode

3.28V

Gnd

3.4V

Gnd

1.16V

0.73V

Gnd

Open

Gnd

Open

21 0V

22 0.3V

D251

D252

D255

D201

SMPS

P/N: EAY60868901

D501

450V 68uF

C608 C607

F501

3.15A / 250V

0V STBY

388V RUN

Voltage

1.70V

1.09V

0.52V

0.10V

Voltage

1.70V

1.09V

0.52V

0.10V

D801

D101

P2401 ‘Main” to J1 "IR Board"

Pin Label STBY Run Diode

1 2 3 4 5 6 7 8 9

11 12

(2)

INV_ON

12V

(3)

Error_Out

12V

(4)

A-DIM N/C

(5)

P-Dim

n/c

3.32V Open

11.96V

0.59V

11.96V

4.49V

n/c

2.46V

P201

T501

IC500

SCL 0V SDA

Gnd Key 1 3.4V 3.39V 1.52V Key 2

ST_3.3V 3.41V 3.39V 0.9V

Gnd

LED_B

Gnd Gnd Gnd Gnd +3.3V

LED_R 2.49V 0V 2.14V

450V 68uF

L600

D502

D503

D602

Q601

Gnd

3.4V

Gnd

3.39V

Gnd 0V 0V 2.3V 2V

1.98V

0V 0V

TO TFT MODULE PANEL BOARD

TFT Interface

Open

1 and 30 are Gnd.

Open

SMPS Used in the 32LD350:

EAY60868901 32LD350 AUSWLJR or

AUSDLFR or AUSDLUR or AUSDLJR

EAY60869101 32LD350 CUSWLH or CUSDLH or CUSWLHO

(1)

PWR-On Pin 1:

Turns on 12V, 24V to the Main and 24V to the Inverter P203 Pins 1~5.

(2)

INV-On Pin 18:

Turns on the Backlights

(3)

Error_Out Pin 20:

(Silk Screened A-DIM) Goes high (3.3V) when the backlights are told to come on. Goes back low when they light. If it goes high again on the

attempt to fire the backlights, the set shuts off.

(4)

A-DIM Pin 22:

(Silk Screened P-DIM) Is not used .

(5)

P-DIM Pin 24

(Silk Screened Error_Out) can vary according to incoming video IRE level and OSD Backlight setting Output from the Video Processor IC100. Range

0.65V to 3.25V.

J1 Ft IR

Open Open

Gnd

1.52V

Gnd

Open

0.58V0.2V 3.3V

Diode

Open Open

2.97V

Open

2.77V

Open Open

Side (Key) Controls

Gnd

Board

24V Amp_VCC Pins 32~35 24V Amp_VCC Pins 49~52

L607

P3000

Diode Check Open

Pins 2 and 4 Gnd

12V Pins 2 ~ 5 and LVDS Video Signals

INV_CTL

Q405

Driver

IC408

Power_Det

IC406

+3.3V_Normal

3.3V_Normal In

D102

Q600

IC600

R-R+ L-L+

123

Audio Mute

L422

IC405

12V In

+1.8V_AMP

A1A2

Audio Amp

Q2406

+5V_Normal

12V In

IC601

3.3V_Normal Pin 8

1.8V_Amp Pin 16

P600

R-R+L-L+

To all Speakers

All pins 12.95V

Pin 1 Key 1 Pin 3 Key 2

P402 to SMPS P201

Pin Diode Check

2-4

5-8

9-12

13-16

23 24

For Voltages

See P201 SMPS

P402

From 3.3V_ST

Power On Switch

Q402

12 C

Q401

Reset Gen

Power On

Switch Ctl

IC103

IC400

L421

Gnd

3.3V_ST In

+3.3V_AVDD_MPLL

CEC

Switch

Mute

Routing

Q7703

D7703

JK7700

L606

JK1104

EBCEB

Q2405

There is a 12V Fuse on

the Panel Board.

2.75V

Open

Gnd

0.91V

Gnd

2.58V

1.5V

2.58V

3.04V

2.58V

Open

Gnd

Open

From 3.3V_ST

Gnd

Out

Q7701

HDMI Hot

Swap

IC104

D7705

A1 A2

+1.26V_VDDC

IC407

+1.8V_DDR

SW100

Microprocessor

Reset

IC1

MStar EEPROM

3.3V_Normal In

IC7701

IC403

12MHz

L415

L423

DDR

X100

EDID HDMI 2

Grayed out components are

on the Back Side.

JK1102 JK1103

A1A2

D1115

IC1105

PC EDID

P2401

Front IR

IR Receiver

Power Button

Note: STBY 3.5V Must be present when AC applied.

SMPS TEST: To Force Power Supply On.

Disconnect P402 on Main Board. Jump pin 1 (PWR_ON) to pin 9, 10, 11 or 12 . This should force the SMPS to the on state. All Voltages should be produced. (24V and 12V to Main. 24V to Inverter). The Backlights should come on.

HDCP EEPROM

IC105

IC100 Mstar

Micro and Video

Processor

Optical Audio Amp

12V Pins 27 ~ 30 and LVDS Video Signals

IC2

DDR

MAIN BOARD

p/n: EBU60850003

Q100

IC101

NAND

Flash

Serial Flash

Q1100

Earphone Amp

Mute

EBCEB

Q1105

IC1104

JK9800

Main Boards Used in the 32LD350:

EBU60850009 32LD350 AUSWLJR and AUSDLFR EBR66049702 32LD350 AUSDLJR EBU60850010 32LD350 AUSDLUR EBU60850003 32LD350 CUSDLH EBU61005102 32LD350 CUSWLH and CUSWLHO

Earphone

IC1100

Amp

IC102

D1100

A1A2

From 3.3V_Norm al

IC1201

+3.3V_TU

LVDS

Q407

P802

Q406

Q409

Panel Vcc Switch

3.3V_TU In

+1.2V_PVSB

IC1004

Digital Video

X1005

25MHz

TUNER TDVJ-H001F

18. IF p

Digital Video

17. IF n

16. IF AGC

15. Reset

14. 3.3V

13. 1.26V

12. GND

Analog Video

11. CVBS

10. NC

Audio

9. SIF

8. NC

7. SDA

Tuner Data

6. SCL

Tuner Clock

5. NC

4. NC

Tuner B+

3. 5V

2. NC

1. NC

From 5V_Normal

Overcurrent

+5V_TU

Panel

Vcc 2

Driver

Panel

Vcc 1st

Driver

IC1000

USB +5V

Q5004

P201

IC1450

EDID HDMI 4

IC7702

D7706

Q7702

Q1104

12V In

L406

5V_USB In

Q1103

Jumper

5V_USB

IC401

Headphone

E B

Earphone

IC5001

+1.26V

For Tuner

3.3V_TU In

USB1

HDMI

Q110

Mute

SIDE A/V

212

Page 2

32LD350 MAIN (FRONT SIDE) SIMICONDUCTORS

IC101 Serial Flash IC403 (+1.26V_VDDC) IC407 (D1.8V) IC5001 (+1.26V) for Tuner Q7702 HDMI 4

Pin Memory Pin Regulator Pin Regulator Pin Regulator Pin Det

[1] 0.05V [1] 0.79V [1] 0.8V [1] 3.3V (In) B 0.63V [2] 3.28V [2] 0V (Gnd) [2] 0V (Gnd) [2] 1.26V (Out) C 0V [3] 2.26V [3] 3.37V (In) [3] 3.38V [3] 0V (Gnd) E Gnd [4] 0V (Gnd) [4] 4.47V [4] 4.79V [5] 0V [5] 3.34V [5] 3.35V Q100 Write Protect for D1100 5V Routing [6] 0V [6] 1.3V (Out) [6] 1.76V (Out) Pin IC101 Pin for IC1100 [7] 3.28V (B+) [7] 1.3V (Out) [7] 1.76V (Out) B 0V [A1] 0.07V

[8] 3.28V (B+) [8] 2.96V (PWR On/Off2_1) [8] 2.36V (PWR On/Off1) C 3.3V [A2] 4.98V

E Gnd [C] 4.37V

IC105 HDCP IC405 (+3.3V_NORMAL) IC1000 (+1.2V_PVSB)

Pin EEPROM Pin Regulator Pin Regulator Q1100 Earphone Mute D7705 5V Routing

[1] 0V (Gnd) [1] 0V (Gnd) [1] n/c Pin 1st Driver Pin for IC7701 [2] 0V (Gnd) [2] 11.92V (In) [2] 3.26V (Enable) B 0V [A1] 0V [3] 3.3V (B+) [3] 0V (Gnd) [3] 3.26V (In) C 2.26V [A2] 4.98V [4] 0V (Gnd) [4] 0.8V [4] n/c E Gnd [C] 4.71V [5] 0V [5] 0.84V [5] n/c [6] 3.3V [6] 2.39V (PWR On/Off1) [6] 1.81V (Out) Q1103-4 EARPHONE [7] 0V (Gnd) [7] 3.35V (Out) [7] 1.21V Pin MUTE

[8] 3.28V (B+) [8] 3.35V (Out) [8] n/c B 0V

C0V

IC401 5V Regulator IC406 (+5V_NORMAL) IC1450 5V Shot Protection E Gnd

Pin for USB Pin Regulator Pin for USB

[1] 11.9V (In) [1] 0V (Gnd) [1] 0V (Gnd) Q1105 Earphone Mute [2] 5.09V (Out) [2] 11.92V (In) [2] 5V (In) Pin 2nd Driver [3] 5.09V (Out) [3] 0V (Gnd) [3] 5V (In) B 0.63V [4] 0V (Gnd) [4] 0.8V [4] 0V (USB-Ctl) C 0V [5] 3.25V (PWR On/Off1) [5] 0.84V [5] E Gnd [6] 0.8V [6] 2.39V (PWR On/Off1) [6] 5V (Out) [7] 5.05V [7] 4.98V (Out) [7] 5V (Out)

[8] 0V (Gnd) [8] 4.98V (Out) [8] n/c

32LD350 MAIN (BACK SIDE) SIMICONDUCTOR

IC103 Reset IC1100 Earphone IC1201 RS232 IC7702 EDID Data Q407 PANEL_VCC Q5004 Tuner SIF

Pin Generator Pin Amp Pin Data Buffer Pin HDMI4 Pin

Control 2nd Driver Pin (Sound) Buffer

[1] Gnd [1] 2.14V [1] 3.34V [1] 0V (Gnd) B 0.679V B 0.163 [2] 0V [2] 0V (Gnd) [2] 3.48V [2] 0V (Gnd) C 0V C Gnd [3] 3.39V [3] 0.02V [3] 0V [3] 0V (Gnd) E Gnd E 0.85V

[4] 2.19V [4] 0V [4] 0V (Gnd)

IC104 EEPROM [5] 2.19V [5] (-5.37V) [5] 4.69V Q409 PANEL_VCC Q7701 HDMI 2

Pin Mstar [6] 4.37V [6] 5.39V [6] 4.69V Pin Switch Pin Det

[1] 0V (Gnd) [7] 2.19V [7] (-5.37V) [7] 4.69V S 11.97V (In) B 0.63V [2] 0V (Gnd) [8] 2.18V [8] n/c (0V) [8] 4.69V G 1.84V (Enable) C 0V [3] 0V (Gnd) [9] n/c (3.39V) D 11.97V (Out) E Gnd [4] 0V (Gnd) IC1104 Optical Audio [10] n/c (3.35V) Q401 Power On/Off [5] 3.31V Pin Amp [11] n/c (0V) Pin Driver for Q402 Q600 AMP_MUTE Q7703 CEC Remote [6] 3.31V [1] 1.64V [12] 3.35V B 0.64V Pin Pin 25 IC600 Pin HDMI CEC [7] 0V (Gnd) [2] 3.29V [13] 0V C 0V B 0.08V [B] 3.39V [8] 3.31V [3] 0V (Gnd) [14] 5.47V E Gnd C 3.35V [G] 3.32V

[4] 0V (Gnd) [15] 0V (Gnd) E Gnd [S] 0V

IC400 (+3.3V_AVDD_MPLL) [5] 3.29V [16] 3.37V Q402 Power On/Off [D] 3.26V

Pin Regulator Pin Switch Q1101-2 EARPHONE [In] 3.35V IC1105 EDID Data IC7701 EDID Data 1 3.39V (In) Pin MUTE D102 Mute

[Gnd] Gnd Pin PC Pin HDMI2 2 0.89V (Ctl) B 0V Pin Routing

[Out] 3.34V [1] 0V (Gnd) [1] 0V (Gnd) 3 3.28V (Out) C 0V [A1] 0V

[2] 0V (Gnd) [2] 0V (Gnd) E Gnd [A2] 0V

IC601 (+1.8V_Amp) [3] 0V (Gnd) [3] 0V (Gnd) Q405 Inverter On/Off [C] 0V

Pin Regulator [4] 0V (Gnd) [4] 0V (Gnd) Pin Switch Q2405 IR Buffer

[1] Gnd [5] 4.7V [5] 4.7V B 0.06V Pin 1st Driver D1115 5V Routing [2] 1.81V [6] 4.7V [6] 4.7V C 3.32V B 0.6V Pin for IC7705 [3] 3.31V [7] 4.7V [7] 4.7V E Gnd C 0V [A1] 0.03V

[8] 4.7V [8] 4.7V E Gnd [A2] 0V

IC408 Power_Det Q406 PANEL_VCC [C] 4.69V

Pin 24V, 12V, 3.5V D7703 3.5V Blocking D7706 5V Routing Pin

Control 1st Driver Q2406 IR Buffer

[1] 3.52V Pin for Q7703 Pin for IC7702 B 0.03V Pin 2nd Driver [2] 3.35V [A1] 0V [A1] 4.98V C 0.69V B 0V [3] Gnd [A2] 3.37V [A2] 0V E Gnd C 3.3V

[C] 3.3V [C] 4.69V E Gnd

Page 3

32LD350 LVDS P802 WAVEFORMS

Pin 6

5uSec per/div 625mV p/p

Pin 13

Pin 7

5uSec per/div 561mV p/p

Pin 15

Pin 9

5uSec per/div 548.5mV p/p

Clock (TXAC+) Clock (TXAC-)

Pin 16

Pin 10

5uSec per/div 565.1mV p/p

Pin 18

Pin 12

5uSec per/div 349.9mV p/p

Pin 19

5uSec per/div 535.6mV p/p

5uSec per/div 540.7mV p/p

32LD350 P802 LVDS CABLE WAVEFORMS:

Waveforms taken using SMTP Color Bar input. All readings give the Scale 100mV and 5uSec per division Time Base related to scope settings.

5uSec per/div 534.1mV p/p

5uSec per/div 583.9mV p/p

5uSec per/div 395mV p/p