S.M.A.R.T. Service Material and Reference Tips · 2018. 12. 14. · S.M.A.R.T. Service Material and...

© 2009 Toshiba America Consumer Products, LLC.

S.M.A.R.T.

Service Material and Reference Tips

Product: LCD Date:2/4/2010 Models: 42ZV650U, 42ZV655U, 47ZV650U, 47ZV655U, 55ZV650U, 55ZV655U Doc Ref/File: SMART2009-LCD709-V11 Purpose: The purpose of this document is to give the service provider troubleshooting information designed to expedite the diagnosis and service process to modular/sectional level for Toshiba products. [The information contained within the document will evolve over time so a version number has been indicated in the document name. The servicer should always use the latest version available.] Table of Contents

Section l Chassis Layout and Plug location Disassembly Caution……………………………..2

Chassis and Plug Layout…....…………....….….3 Interconnect…………………………….………....4 Section ll Modular Troubleshooting Flowcharts Dead Set …………………………………………..5 Video Problems …………………....……….......6,7 Audio Problems …………………...………………8 Continual Boot Blink Code..................................9 Section lll Diagnostic and Service Aids

Blink Codes ……………………..…………...10, 11Firmware Updates…………………………...12, 13Service Mode Entry………………………………14 Replacement of Main Module……………….…..15

Feedback: Please provide any comments or suggestions about this document

to [email protected] When commenting, please provide the document and version number on all correspondence.

SMART2009-LCD709-V11 Page 1 of 15

42/47ZV650-655U

55ZV650-655U

Hex/Phillips head 3/4 IN X 3/16 IN

(20mm X 4mm)

Phillips head 5/8 IN X 3/16 IN

(16mm X 4mm)


(30mm X 4mm)


(16mm X 4mm)

Number of Screws may vary from model to model

Disassembly Caution!Screws attaching the backs of the ZV650/655U family vary in

length and must be returned to the proper location during reassembly.


T-Con

Main PCBPower Supply PCB

CN652LVDS

CN651LVDS

CN730

CN653

CN91CN90

CN30

CN720

CN740

PJ90 PJ91

P801A

Keyboard

Plug positioning and orientation on the power supply PCB may vary slightly from model to model but pin outs and plug numbers will remain the same.


Main Power Supply

P801A

CN730

CN720 Logo Pwr.

CN652LVDS

L

NAC In

** Indicates Standby

CN90

CN91 PJ90

PJ91

CN651LVDS

CN30 To Spkrs.

CN740 To IR Rec and LEDs

CN653 To Inv.

14. Gnd.13. 5V16. Gnd.5. NC4. 18V Aud.3. 18VAud.2. Gnd.1. Gnd.

8. Vcc 12V LCD<7. Vcc 12V LCD<6. Gnd.5. Gnd.4. Pwr. LCD3.3V>3. AC Det. 3.2V<2. Pwr. Sig. 3.3V>1. Pwr. Prot. 3.2V2. Dim SW (0-3.3V)>1. BL On/Off 3.3v>

4. L+ Amp3. L- Amp2. R+ Amp1. R- Amp

2. On/Off1. VCC 5V>

1. Power Key2. ADC In23. Gnd.4. ADC In1

1-5 12V Vcc LCD

37-41 12V Vcc LCD

1. 24V2. 24V3. 24V4. 24V5. 24V6. Gnd. Inv7. Gnd. Inv8. Gnd. Inv9. Gnd. Inv10. Gnd. Inv

Key:Pin 1Flow:>-Out 3.3V11. Stand By LED>10. Pwr. On LED> 3.3V9. 3.3V TVM (IR/LED)8. Gnd.7. NU6. NU5. 3.3V TVM (IR/LED)4. 5V1>3. Gnd.2. IR Out>1. Rmt. In<

Plug positioning and orientation on the power supply PCB may vary slightly from model to model but pin outs and plug numbers will remain the same.


Is5 VDC present

at pin13 of CN90 on the main module when AC is

applied?

Doesa 3.3 volt DC

level appear at pin 2 of CN91 when the on/

off button ispressed?

Yes

Suspect a problem withthe power supply module.

No

Is apower protect

level (3.2 VDC) present at pin 1 of

CN91 when ACis applied?

Yes No

Suspect a problem withthe power supply module.

Does the secondary

12 volt source appear at pins 9, 10, and 11 of CN90 when the on/off

button is pressed?

No

No

Suspect a problem with the SYSCON

circuit located on theMain module.

Yes

Yes

Suspect aproblem with the Main module.

Dead Set No Sound/ No

Picture

Does3.2 volts (AC

Detect) appear at pin 3 of CN91 when

power is pressed?

Yes

No

Does a blink code appear when the unit is

turned on?

Yes

No

Use the blink code chart to help diagnose the problem. Over voltage( Mode 20) indicates

power supply problems and bus line problems (Mode 19) indicates a defective main module.


Whenthe input button

is pressed on the receiver or remote, is

the on screen display clear and

normal?

NOYES

Using the power distribution

diagram, are the voltages normal at pins 9, 10, and

11 of CN90 and pins7 and 8 of CN91?

NO

Suspect the power supply

module.

YES

Replace the Main Module.

No or distorted video

Does the back light function normally when the unit

is turned on?

YESNO

Troubleshoot for backlight problelms.

Is thescreen discolored

or have streaks as shown in the example or

are dark areaspresent ?

NO

If the LCD Control Board is available, try it.

If this does not help, replace the LCD display

panel. ***YES

Examples

*** Warranty Authorization required if display is replaced in warranty – Go to www7.toshiba.com for instructions.

Check for LVDS activity atCN651 and CN652. If it is present, suspect a problem with the display

control board (Tcon). If it is not present, replace the

main PCB.

This signal viewed from the twisted cable pairs at the LVDS connectors while referencing cold ground.


Doesthe back light

function and thenturn off or is there a dark horizontal area

on the screen?

YESNO

Is24 VDC

at pins 1 through 5of P860 and 12VDC at pins 7 and 8 of CN91

present while the unitis on?

YESNO

Replace the Power supply

module.

YES

NO

If it isavailable , try one or both inverters. If this does not

help, replace the LCD display. ***

*** Warranty Authorization required if display is replaced in warranty – Go to www7.toshiba.com for instructions.

Backlight Troubleshooting

Replace the Main module.

Is 3.3VDC present at pin 1 of

CN653 shortly (.5 sec) after the unit is

turned on?

Replace the display. ***

RemoveAC, and unplug the

LVDS cable(s) as well as P860, and P861. Do both voltages return when AC is

reapplied andthe unit is turned

on?

YES

NO


Using the remote or

the manual keyboard, access the audio menu to

assure the speakers are on and the input selection is a

known good source. Will this restore

audio?

Does thepower supply

generate the audiosupply voltages (18 VDC) at pins 3 and 4 of CN90

when the unit is turned

on?

YES

NO

Replace the power supply

module.

YES

NO

Replace the Main module

Problem solved.

No Audio


Doesa front

LED continually blink 3 times then

pause?

No

Refer to LED error codes

Doany of the LEDs on

the main PCB light?

Yes

2009 LCD -LED Blinks 3 Times Constantly (Stuck in Boot Cycle)

NoYes

To boot the set using USB update drive:1. Remove AC.2. Insert firmware update.3. Reapply AC. Both front LEDs should light.4. After several minutes the amber LED should turn off. 5. Remove update drive, then remove AC for 30 seconds.6. Reapply AC and set should operate normally.

Suspect the main PCB.

Try booting set using firmware USB

update drive. Is problem solved?

Problem solved.

Yes No


Firmware Upgrades

1. Begin by turning the TV on.

2. Insert a USB or SD storage device containing the update for the correct model into the proper input terminal located on the right side of the TV. (Figure1)

Figure 1

3. Using the arrow buttons on the remote highlight the OK box and press enter. (Figure2)

Figure 2

USB Slot

Or

SD Media Card Slot


4. The bar indicating the update process will move from left to right. (Figure 3)

Figure 3

5. The box in figure 4 will appear when the update process is completed. Remove the upgrade device and the unit will automatically reboot. Normal viewing can then be resumed.

Figure 4


Entering Service Mode

1. Press mute button twice on customer remote.

2. Press mute button again and hold it down.

3. While holding mute button down, press menu button on TV.


Replacing the Main Module in the ZV650/655U Model Group

1. Enter Service Mode.

2. View the “Set-ID” (Model ID) and option code functions by pressing Channel up or Channel down on the consumer remote.

3. Verify the Model ID and option code data using table 1 shown below. (The values indicated in this table are current at the time of this writing)

4. If differences are noted in the Model ID or option code values after the main PCB is replaced, they should be adjusted using the values shown in table 1.

5. Volume up and volume down on the consumer remote is used to adjust the Model ID or option code values.

6. After any necessary adjustments are done, power the unit off and remove AC. Reapply AC and power the unit on to record the adjustments.

Model Panel Running

Changes Opt. 4 Opt.4

Changes Opt. 3 Opt.5 Model ID

42ZV650/655U LG 17H E0H 00H 81H

47ZV650/655U LG 18H E0H 00H 82H

55ZV650/655U LG 1CH E0H 00H 83H

Table 1


S.M.A.R.T. Service Material and Reference Tips · 2018. 12. 14. · S.M.A.R.T. Service Material and...

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