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HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
SERVICE MANUAL (COMMON)
GN2S CHASSIS
Segment: QW
Version |
Date |
Subject |
1 |
01/2016 |
1st Issue. |
LCD TV
9-888-190-01
For SM - Unique , please refer :
9-888-190-Ax ( America ) 9-888-190-Cx ( China)
9-888-190-Ex ( Europe )
9-888-190-Px ( Pan Asia)
SERVICE MANUAL (COMMON)
GN2S CHASSIS
Segment: QW
LCD TV
MODEL LIST
THIS SERVICE MANUAL CONTAINS COMMON INFORMATION FOR BELOW REGIONS AND MODELS:
REGION |
|
ASIA |
AMERICA EUROPE CHINA |
MODEL
KLV-32W6*D KLV-40W6*D KLV-48W6*D
KDL-32W6*D KDL-40W6*D KDL-48W6*D KDL-55W6*D
TABLE OF CONTENTS
Section Title |
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Page |
1. SAFETY NOTES |
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1-1. |
Warnings and Caution………………………………………………………. |
5 |
1-2. |
Caution Handling of LCD Panel ......…………….................................... |
5 |
1-3. |
Caution About the Lithium Battery……………......................................... |
6 |
1-4. |
Safety Check Out ........................……………......................................... |
6 |
1-5. |
Leakage Test .......................................................................................... |
6 |
1-6. |
How to Find a Good Earth Ground………………………………………… |
6 |
1-7. |
Lead Free Information….…………………………………………………… |
7 |
1-8. |
Handling the Flexible Flat Cable (FFC)……………………………………. |
7 |
2. SELF DIAGNOSTIC FUNCTION |
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2-1. |
Overview of Control Buttons ................................................................... |
8 |
2-2. |
LED Display Control ………..................................................................... |
8 |
2-3. |
LED Pattern………………........................................................................ |
8 |
2-4. |
Standby LED Error Display…………………………………………………. |
8 |
2-5. |
Triage Chart ............................................................................................ |
9 |
3. TROUBLE SHOOTING |
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3-1. |
LED Blinking............................................................................................. |
12 |
3-2. |
No Power…….……………………………………………………………….. |
28 |
3-3. |
No Picture................................................................................................. |
54 |
3-4. |
No Sound.............................………………………………………….......... |
107 |
Section Title |
Page |
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4. SERVICE ADJUSTMENTS |
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4-1. |
Accessing Service Mode ..................................................................... |
129 |
4-2. |
Accessing Software Version....................……….……………………… |
129 |
4-3. |
Accessing Self Diagnostic History………………………………..…….. |
130 |
4-4. |
Accessing Self Diagnostic Menu………………………………………... |
130 |
4-5. |
Accessing Serial Number Edit……………….………………………….. |
132 |
4-6. |
Accessing Model Number Setting........................................................ |
133 |
4-7. |
White Balance...................................................................................... |
135 |
4-8. |
Aging Mode.......................................................................................... |
139 |
4-9. |
Tuner Detection.................................................................................... |
140 |
5. DIAGRAMS |
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5-1. |
Circuit Board Location ......................................................................... |
143 |
5-2. |
Block Diagram...................................................................................... |
144 |
5-3. |
Connector Diagram ………………………………………...................... |
147 |
Please refer to Service Procedure for Panel , Board and Software Change / Upgrade Manual , part number 9-888-196-0x in TISS .
Please refer Service Manual – Unique for below information : -Safety Warnings
-Wire Dressing -Circuit Board Location
-Disassembly and Exploded View.
Note: Pictures provided in this Service Manual might have slight difference from the actual sets.
4
SECTION 1
SAFETY NOTES
1-1. Warnings and Caution
1)These servicing instructions are for use by qualified service personnel only.
2)To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so.
3)An isolation transformer should be used during any service to avoid Possible shock hazard, because of live chassis. The chassis of this receiver is directly connected to the ac power line.
4)Be sure to follow these guidelines to protect your property and avoid causing serious injury :
• Carry the TV with an adequate number of people; larger size TVs require two or more people.
•
safety and to avoid damages.
5) Components identified by shading and ! mark on the exploded views, and in the parts list are critical for safe operation. Replace these components with Sony parts whose part numbers appear as shown in this
manual or in supplements published by Sony. Circuit adjustments that are critical for safe operation are identified in this manual. Follow these procedures whenever critical components are replaced or improper operation is suspected.
1-2. Caution Handling of LCD Panel
When repairing the LCD Panel, make sure you are grounded with a wrist band. When repairing the LCD Panel on the wall, the panel must be secured using the 4 mounting holes on the rear cover.
1)Do not press the panel or frame edge to avoid the risk of electric shock.
2)Do not scratch or press on the panel with any sharp objects.
3)Do not leave the module in high temperature or in areas of high humidity for an extended period of time.
4)Do not expose the LCD panel to direct sunlight.
5)Avoid contact with water. It may cause short circuit within the module.
6)Disconnect the AC power when replacing the backlight (CCFL) or
inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms)
7)Always clean the LCD panel with a soft cloth material.
8)Use care when handling the wires or connectors of the inverter circuit.
Damaging the wires may cause a short circuit.
9)Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10)During the repair, DO NOT leave the Power On or Burn-in period for more than 1 hour while the TV is face down on a cloth.
Figure 1. TV is faced down on a cloth during repair.
5
1-3. Caution About the Lithium Battery
1) Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.
2) Outer case broken battery should not contact to water.
1-4. Safety Check-Out
After correcting the original service problem, perform the following safety checks before releasing the set to the customer:-
1)Check the area of your repair for unsoldered or poorly soldered connections. Check the entire board surface for solder splashes and bridges.
2)Check the inter board wiring to ensure that no wires are pinched or
contact high-wattage resistors.
3)Check all control knobs, shields, covers, ground straps and mounting hardware have been replaced. Be absolutely certain you have replaced all the insulators.
4) Look for unauthorized replacement parts, particularly transistors that
were installed during a previous repair. Point them out to the customer and recommend their replacement.
5)Look for parts which, though functioning show obvious signs of deterioration. Point them out to the customer and recommend their replacement.
6)Check the line cords for cracks and abrasion. Recommend the replacement of any such line cord to the customer.
7)Check the antenna terminals, metal trim, metalized knobs, screws and all other exposed metal parts for AC leakage. Check leakage test as described next.
8. For safety reasons, repairing the Power board and/or Inverter board is prohibited.
1-5.Leakage Test
The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis must not exceed 0.5mA (500 microamperes).
Leakage current can be measured by any one of the three methods:-
1)A commercial leakage tester such as the SIMPSON 229 or RCA WT540A. Follow the manufacturers instructions to use those instructions.
2)A battery-operated AC milliampmeter The DATA PRECISION 245 digital multimeter is suitable for this job.
3) Measuring the voltage drop across a resistor by means of a VOM or battery operated AC voltmeter. The 'limit' indication is 0.75V so analog meters must have an accurate low voltage scale. The SIMPSON'S 250 and SANWA SH63TRD are examples of passive VOMs that are suitable. Nearly all battery operated digital multimeter that have a 2 VAC range are suitable.
(see Figure 2.)
Figure 2. AC voltmeter to check AC leakage
1-6. How to Find a Good Earth Ground
1)A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground.
2)If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms.
3)If a cold-water pipe is not accessible, connect a 60to 100-watt troublelight (not a neon lamp) between the hot side of the receptacle and the retaining screw. Try both slots, if necessary, to locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground potential (see Figure 3).
Figure 3. Checking for earth ground.
6
1-7. Lead Free Information
The circuit boards used in these models have been processed using Lead Free Solder. The boards are identified by the LF logo located close to the board designation.
Figure 4: LF Logo |
Figure 5: LF logo on circuit board |
The servicing of these boards requires special precautions. It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints.
1-8. Handling the FLEXIBLE FLAT CABLE (FFC)
When you insert / pull out FFC, please grasp a reinforcement board and main body of FFC.
7
1-8. Handling the FLEXIBLE FLAT CABLE (FFC)
<INSERTION>
Insert properly without slanting
<PULL OUT>
Press release button at the same time pull out FFC cable
8
1-9. Assemble and Dissemble Tuner Module
Tuner Module treatment way
1.The insertion & extraction angle of the module is permitted to specified degree for connector
Push down to screw.
For removing Tuner Module,
After un screwed, Automatically the Module will float to correct degree.
So please extract it with keeping this degree.
20°
Reference paper for 20 degree
(If need please use for fit by cutting this paper)
20°
9
SECTION 2
SELF DIAGNOSTIC FUNCTION
2-1. Overview of Control Buttons
LED Indicator
•Lights up in green when you select “Picture Off”.
•Lights up in amber when you set the timer or “Photo Frame Mode”.
•Lights up in green when the TV is turned on.
•Flashes while the remote is being operated.
2-2. LED Display Control |
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Amber = Red + Green |
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Status |
LED Colour |
Remarks |
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Power Off ( AC Off and *1) |
OFF |
*1 power switch off (by touch button) |
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Power On |
Green |
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Standby(by remote control off |
OFF |
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and Side Key off) |
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Picture Off |
Green |
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Set "Sleep Timer" |
Amber |
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Set "On Timer” ( Power On ) |
Amber |
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Set "On Timer”( Standby ) |
Amber |
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Picture Frame |
Amber |
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Failure |
Red Blinking |
The number of LED blinking indicates |
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cause of failure. |
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Error of panel ID |
Amber/Green |
Blinking:0.5sec Amber/ 0.5sec Green |
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Blinking |
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Software Updating |
Amber |
Blinking: 1sec On / 1sec Off |
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Blinking |
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2-3. LED Pattern
When safety shutdown occurs, Standby LED display reports the cause by using the lightning patterns as indicated below.
0.5sec |
3.0sec |
3.0sec |
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0.5sec
Example: The figure above shows LED display when SHUTDOWN is caused by Audio
Error. It repeats flashing for a specified number of times in 0.5sec/cycle and has a 3 seconds interval of lighting off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.
2-4. Standby LED Error Display
The Number of Standby LED |
Error Detection |
Error Location |
(RED blinking) |
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2 |
Main Power Error |
AC adapter Error |
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3 |
Audio Error |
B* board Error |
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4 |
Panel Power Error |
B* board Error |
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5 |
Panel I2C COMM Error |
B* or Source board Error |
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6 |
Backlight Error |
B* board Error |
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Size |
B* Board Type |
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PAN ASIA,AMERICA, |
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EUROPE |
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CHINA |
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32” |
BBA |
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BBE |
40” |
BBA |
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BBE |
48” |
BBA |
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BBE |
10
2-5. Triage Chart
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Symptoms - Shutdown. Power LED |
No Power |
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Video |
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Network |
Audio |
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Segment |
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(No Pic, No |
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Remote |
*QT,QW, |
(missing/ |
front LED |
Tact-Key |
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blinking red diagnostics sequences |
(missing/distorted) |
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Sound, No BL) |
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SE3N |
distorted) |
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No Power LED |
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No |
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No |
Reference |
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Stationary |
No Video |
RF |
No Reponse |
Wireless |
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Response |
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Video |
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when |
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QW |
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QW-L |
SE3N |
SE3 |
2 |
3 |
4 |
5 |
6 |
No Reponse to |
colored |
in 1(one) |
in |
Cannot |
when press |
can't |
No Audio |
(Set is still |
press |
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remote |
lines or |
of Inputs |
All |
Tune |
remote key |
connect |
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alive) |
Tact-Key |
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dots |
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(Dead Set) |
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Inputs |
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(Remote |
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OK) |
B* Board |
Y |
Y |
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Y |
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AC Adaptor |
Y |
Y |
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Y |
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H* Board |
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Y |
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Stereo |
Y |
Y |
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Y |
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Speaker |
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Speaker |
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Wi-Fi |
Y |
Y |
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LVDS FFC |
Y |
Y |
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Y |
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LED Panel |
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Y |
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Tuner |
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Switch Unit |
Y |
Y |
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Problem |
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Power |
Audio |
Panel |
Panel |
Panel |
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(Power) |
(Communication) |
(Backlight) |
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Most likely defective part
Secondary possible defective part
Size |
B* Board Type |
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PAN ASIA,AMERICA, |
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EUROPE |
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CHINA |
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32” |
BBA |
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BBE |
40” |
BBA |
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BBE |
48” |
BBA |
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BBE |
11
SECTION 3
TROUBLESHOOTING
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3-1. LED BLINKING |
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Size |
B* Board Type |
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3-1-1. 2x Blinking (Main power Error) |
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PAN ASIA,AMERICA, |
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EUROPE |
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CHINA |
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32” |
BBA |
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BBE |
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BBE, BBA board (QW, QWL) only |
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40” |
BBA |
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BBE |
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48” |
BBA |
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BBE |
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-ve |
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B-Board |
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Adaptor |
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Take out adaptor |
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2 times |
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Check DC voltage at |
No |
No |
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+ve |
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and check the output voltage. |
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Change |
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JL6001 |
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Blinking |
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18V – 22.5V? |
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adaptor |
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18V – 22.5V? |
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Ensure that |
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(Refer Figure 1) |
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*Typical: 19.5V |
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*Typical: 19.5V |
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+ve probe is |
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touching the |
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needle. |
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Yes |
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Yes |
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Change B-board |
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Change B-board |
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Figure 1: How to check adaptor’s output voltage.
12
2 x Blinking (Checking Point)
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Board Name |
Board PWB (A side) |
Detail |
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BBA (Q6020)
Q6020
BBE (Q6020)
Q6020
13
3-1. LED BLINKING
3-1-2. 3x Blinking (Audio Error)
No connectivity of F4000
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F4000 broken, |
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3x blinking |
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Replace F4000 |
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No 3x blinking
START
3x blinking
Remove
Speaker Connector at CN4001 & perform AC OFF - ON
3x blinking
Check connectivity of F4000
3x blinking &
F4000 OK
Audio IC problem,
IC4001 damage
Change BB* board
DONE
No 3x blinking
3x blinking
No 3x blinking
TV must be power OFF condition before unplug any of the FFC/FPC/wire/cable from the board. -> This is to prevent possibility circuit damage happen.
Speaker Impedance
Check Speaker harness |
≠ 6~8 Ω |
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And Speaker impedance |
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No connectivity for speaker harness
Change Speaker |
|
Harness |
Change Speaker |
Connect back Speaker Connector to CN4001
& perform AC OFF - ON
14
3x Blinking (Checking Point)- BBA
|
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Board |
Board PWB (A side) |
Details |
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Name |
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||
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BBA |
|
|
(QW, QT) |
|
|
IC4001 |
IC4001 |
|
F4000 |
||
F4000 |
||
CN4001 |
|
Details |
CN4001 |
15
3x Blinking (Checking Point)- BBE
Board Name |
Board PWB (A side) |
Details |
BBE |
|
|
(QW, QWL, |
|
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QT) |
|
IC4001 |
|
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IC4001 |
|
|
F4000 |
|
|
CN4001 |
|
|
Details |
F4000 |
CN4001 |
16
3-1. LED BLINKING
3-1-3. 4 x Blinking (Panel Power Error)- BBA
Start
Check voltage at |
No |
IC6019 Checking |
|
||
JL6030(BBA) |
|
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Procedure |
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||
11.52V-12.82V? |
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Yes |
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End
3-1-4. 4 x Blinking (Panel Power Error)- BBE
Start |
|
MTK Problem |
|
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Replace |
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or TV in stand- |
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Q6023 |
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by mode. |
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No |
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Yes |
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Check voltage at |
No |
Yes |
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No |
Refer IC6019 |
|||||
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Check PANEL_PWR |
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Check JL6034 (BBE) |
||||||
JL6034(BBE) |
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Checking |
|||||
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3.00V-3.33V? |
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11.52V-12.82V? |
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|||||
11.52V-12.82V? |
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Procedure |
|||||
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Yes |
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End
17
4 x Blinking (Checking Point) QW/QT-BBE [1/2]
|
POWER1 |
3.3V_ |
STBY |
||||
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1.5V |
||
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F6003 |
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EN_V
Q6023
PANEL_PWR |
|
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19.5V |
|
1.2V |
||
|
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Q6020 |
|
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||
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|
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19.5V_ADP |
|
F6002 |
19.5V & Q6020 |
|
|
STBY_5V |
||
18
4 x Blinking (Checking Point) QW/QT –BBA [2/2] |
3.3V_STBY |
STBY_5V |
|
||
|
POWER1 |
|
1.5V |
|
|
PANEL_PWR |
|
|
EN_V
F6003 |
19.5V & Q6020 |
F6002 |
|
1.2V |
|
|
19.5V |
|
|
Q6020 |
|
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19.5V_ADP |
F6002 |
|
|
19
3-1. LED BLINKING
3-1-5. 5 x Blinking (Panel I2C Error - General Checking)
START
Reinsert LVDS Flat
Flexible Cable (FFC) at B-Board and Panel Side. Make sure FFC is taped properly.
5 Times Blinking happen?
YES
Replace LVDS Flat Flexible
Cable (FFC)
5 Times Blinking happen?
YES
Check voltage PANEL_SDA &
PANEL_SCL.
Is 3V available?
No |
TV set is OK now |
|
NG Symptom: |
|
Incorrect FFC Insertion |
No |
TV set is OK now |
|
NG Symptom: |
|
LVDS Cable NG |
Is 3V -3.33V available? |
NO |
Refer to Panel I2C |
|
Manual Checking |
|
|
|
YES
Replace
O-Cell* or Panel Module*
|
5 Times Blinking happen? |
|
No |
TV set is OK now |
||
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|
||||
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NG Symptom: |
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YES |
|
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B-Board Issue NG |
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Replace B-Board |
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TV Boots Up Normally |
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* O-Cell or Panel
END Module replacement
depends on service capabilities
20
3-1. LED BLINKING |
|
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|
|
3-1-6. 5x Blinking (Panel I2C Checking Manual) |
|
|
|
||
START |
|
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|
|
Check Impedance at PANEL_SDA & |
|
Check CN8600 (32”F/40”/43”/ 48”/49”) |
|
||
|
or CN8601 (32”W) condition. |
|
|
||
PANEL_SCL. |
|
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|
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Suspect IC5000/IC5001/IC9000 NG |
|
|
Replace CN8600/CN8601 |
|
No |
IC9000 – Refer to 6X Blinking |
|
NO |
|
Is High Impedance? |
|
IC5001 – Refer to No Picture |
Is Connector OK? |
NG Symptom: |
|
|
|
||||
|
|
Troubleshooting |
|
CN8600/CN8601 Mount |
|
Yes |
|
|
|
||
|
IC5000 – Replace Board |
YES |
|
or Part Issue |
|
|
|
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|
|
Check voltage 3.3V at |
|
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|
|
|
Q8601 (Source). |
|
|
END |
|
|
3V available? |
|
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|
|
Is 3V-3.33V available? |
NO |
DDCON checking procedure |
|
|
|
|
(IC6009) |
|
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YES |
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Replace Q8601 |
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5 Times |
No |
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Blinking happen? |
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|
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Yes |
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|
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Replace Q8600? |
|
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|
|
5 Times |
No |
|
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|
|
Blinking happen? |
|
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|
|
Yes |
|
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|
|
|
21
5 x Blinking (checking Point [1/2])
BBA
FHD
PANEL_SD
A (Top)
PANEL_SC
L (Bottom)
|
|
Q8601 |
|
|
Q860 |
(Source |
|
|
1 |
||
BBA |
) |
||
|
|||
|
Q860 |
||
WXGA |
|
||
|
0 |
||
|
|
PANEL_SDA (Top)
PANEL_SCL (Bottom)
22
5 x Blinking (Panel I2C Checking Manual [2/2])
BBE
FHD
PANEL_SDA (Top)
PANEL_SCL (Bottom)
BBE
WXGA
Q8601 |
Q8601 |
|
|
|
(Source) |
Q8600 |
|
PANEL_SDA (Top)
PANEL_SCL (Bottom)
23
3-1. LED BLINKING
3-1-7. 6x Blinking (Backlight Error)- QW
6x Blinking
Check if LED harness (CN9000) is connected properly?
Yes 
No |
Connect LED harness |
|
|
|
|
|
AC ON 6x Blinking? |
|
Yes |
|
|
|
|
|
Check F9000 Fuse. |
Yes |
Change F9000 Fuse. |
No |
||||
Impedance fuse > 1Ω? |
|
AC ON 6x Blinking? |
|
||||
No |
|
|
Yes |
|
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|
|||
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|
||
Change B Board. |
No |
B Board broken** |
|
||||
AC ON 6x Blinking? |
|
|
|||||
|
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|
||||
Yes |
|
|
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|
|
Able to repair |
|
No |
Change Panel Module |
|
|||
Panel Module? |
|
|
|||||
|
|
|
|
||||
Yes |
|
|
|
|
|||
Change Harness. |
|
No |
Harness broken |
|
|||
AC ON 6x Blinking? |
|
|
|||||
|
|
|
|
||||
Yes
Replace LS bar*
No
LED harness loose
Fuse F9000 broken
*To avoid changing all LS bar, please follow steps below
(1)Turn off AC
(2)Unplug DC adaptor from DC jack
(3)Plug in DC adaptor to DC jack
(4)Turn on AC
(5)LS bar will turn on for ~4s before 6x blinking
(6)Observe which LS bar cannot turn on during power on
(7)Replace LS bar that failed to turn on
**For 6x blinking B Board Troubleshooting please refer next page.
24
3-1. LED BLINKING
3-1-8. 6x Blinking (Backlight Error - B Board Troubleshooting)-QW
B-Board Broken |
|
|
|
|
|
|
|
|
|
|
|||||
Check D9001 (AC OFF) |
No |
Change D9001. |
No |
D9001 broken |
|
||||||||||
VF > 0.1V and < 0.8V? |
|
AC ON 6x Blinking? |
|
|
|
|
|||||||||
|
|
|
|
|
|
|
|||||||||
Yes |
Yes |
|
|
|
|
|
|
|
|
|
|||||
Check LED_VCC (AC OFF) |
No |
Change C9026 & C9027 |
No |
|
|
|
|||||||||
LED_VCC short to ground? |
C9026 & C9027 broken |
||||||||||||||
|
AC ON 6x Blinking? |
|
|
|
|||||||||||
Impedance > 1kΩ? |
|
|
|
|
|
|
|
||||||||
Yes |
|
|
|
|
|
|
|
|
|
||||||
Yes |
|
|
|
|
|
|
|
|
|
|
|
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|
||
|
|
|
Change D9002, Q9001, and RB9001 |
No |
|
||||||||||
Check D9002 (AC OFF) |
No |
D9002, Q9001, and RB9001 broken |
|||||||||||||
VF > 0.5V and < 1V? |
|
|
AC ON 6x Blinking? |
|
|
||||||||||
Yes |
|
|
|
|
|||||||||||
Yes |
|
|
|
|
|
|
|
|
|
|
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|
|||
|
|
|
Change L9001 |
|
No |
|
|||||||||
Check L9001 (AC OFF) |
No |
|
|
L9001 broken |
|||||||||||
L9001 impedance < 1Ω? |
|
|
AC ON 6x Blinking? |
|
|
||||||||||
Yes |
|
|
|
|
|||||||||||
Yes |
|
|
|
|
|
|
|
|
|
|
|
||||
|
No |
|
Change Q9000 |
|
No |
|
|||||||||
Check Q9000 (AC OFF) |
|
|
Q9000 broken |
||||||||||||
Impedance RDS > 100 ohm |
|
|
AC ON 6x Blinking? |
|
|
||||||||||
|
|
|
|
|
|||||||||||
Yes |
|
Yes |
|
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||||
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|
|||||
Suspect : Other Part damage |
|
|
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|
|||||
Change the board |
|
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|
|||||
25
6x Blinking (Checking Point) QW-BBA [1/2]
RB9001, Q9001, D9002, R9021 C9026, C9027, CN9000, IC9000, LED_VCC
RB9001 |
C9026 |
|
IC9000 |
Q9001 |
C9027 |
|
|
D9002 |
LED_VCC |
R9021 |
CN9000 |
|
F9000, L9001, D9001, Q9000
L9001
F9000
S
Q9000
D9001
D
Q9000 RDS Measurement
Multimeter
-ve +ve
26
6x Blinking (Checking Point) QW-BBE [2/2]
|
|
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|
|
|
|
|
|
RB9001, Q9001, D9002, R9021 |
C9026, C9027, CN9000, IC9000, LED_VCC |
||||
RB9001 |
C9026 |
IC9000
Q9001 |
C9027 |
|
|
D9002 |
LED_VCC |
R9021 |
CN9000 |
|
F9000, L9001, D9001, Q9000
L9001
F9000
S
Q9000
D9001
D
Q9000 RDS Measurement
Multimeter
-ve +ve
27
3-2. NO POWER
3-2-1.H-board troubleshooting flow (for QW, QWL)
TV cannot be controlled by remote commander
|
|
|
Yes |
Place remote commander (RC) |
Yes |
Change Mechanical part |
||
Check Green LED |
||||||||
at Power LED indicator. |
|
near to window and press RC key. |
|
|
(ex. Ornamental panel, |
|||
|
|
|
||||||
Is it lighted up? |
|
Is the LED blinking? |
|
|
or guide light) |
|||
No |
|
|
|
No |
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|||
|
|
|
Check voltage at |
|
|
|
|
Pin1 of H board connector |
|
|
|
|
(refer next page) |
|
|
|
|
Is it 5V? |
|
Yes |
|
|
No |
|
|
|
|
||
|
|
|
Check H board to B board |
|
|
|
|
harness condition. |
|
|
|
|
Is it connected properly? |
|
|
|
|
|
|
|
|
|
Yes |
|
|
|
|
|
|
|
|
|
Check voltage at resistor of |
|
|
|
|
5V source of B board. |
|
|
|
|
Is it 5V? |
|
|
|
|
Yes |
|
|
|
|
|
|
|
|
|
Check SIRCS voltage |
|
|
|
|
using multimeter |
|
|
|
|
at R5038 on B board. |
|
|
|
|
Then press and hold RC key and |
|
|
|
|
||
|
|
|
observe voltage drop. |
|
|
|
|
Does it drop |
|
|
|
|
from 3.9V to (<2.9V)? |
|
|
|
|
|
|
|
|
|
Yes |
|
|
|
|
|
|
|
|
|
Main IC SIRCS line broken. |
|
|
|
|
Change B-board |
|
No
Connect harness properly
No |
STBY5V NG. Refer toIC6014 |
|
troubleshooting section |
No
IR sensor broken.
Change H board.
Condition: TV is plugged to AC power supply, and AC power supply is turned ON.
28
H-board troubleshooting flow (Checking Point)
Board name |
Board picture |
HCY
Pin 1 of
H board connector
R5038
BBA
B board
BBE
R5038
29
3-2. NO POWER
3-2-2 : Switch unit troubleshooting flow (for QW, QWL)
Switch Unit NOT FUNCTIONING
Check if Wire Harness And Connector is connected properly?
Yes
** Check 3.3V in Pin2, CN1 (Switch Unit).
Is it 3.3V?
Yes
*Check Pin 1
Voltage Level in CN1 (switch unit). Is voltage level according to key pressed?
Yes
Change B-board
No
No
NG
No
Change Wire Harness
And connect properly
**Check 3.3V in (Pin 8, CN9702 on
B board . Is it 3.3V?
Yes
Change Switch Unit
*VOLTAGE LEVEL FOR EACH PRESSED BUTTON (for QW, QWL, QT switch unit only)
|
KEY |
Voltage |
Voltage |
|
|
|
(average) |
range |
|
|
|
|
|
|
|
- |
0.000 |
0.00 – 0.2 |
|
|
|
|
|
|
|
+ |
1.05 |
1.00 – 1.13 |
|
|
|
|
|
|
|
No Input |
2.420 |
2.26 – 2.58 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
**see next page for probing point of B board
30
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