Service Manuals-schematic- LCD_SHARP-TV

SHARP LC-20D1RU Шасси: DS-1107A

MAIN: CEF196A PAL (OR DVB-T) \ A6147DH061965DIGITALH \ TO8-66B
OMEGA STi5516AUC
EM639165TS-7G
EM638165TS-7G
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STV0360C
LC244A
LC245A
LC373A
BA7810
Tuner: 1ER2087 6716A
T-CON: OEC7162A-083
RENESAS R8J66606A72FP
KE45U2380
OEC7162A
BD8139EFV
INVERTOR: CEF205B DS-1107A
C5886A
PSU: CMF088B
STRW6765
070XZ5M
MSP34103C12

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ТЕМЫ С НЕИСПРАВНОСТЯМИ:

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SHARP LC-40LE822E -LC-46LE822E -LC-52LE822E - Servcie mode – software update – White balance Adjustment – Factory reset – LED television repair and service

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Category: LED Television Repair and Service 

Contents of this article 

• How to Access service mode 
  
• Lamp error detection procedure 
  
• Software update Procedure  
  
• How to reset the TV
  

SHARP LC-40LE822E -LC-46LE822E -LC-52LE822E

ADJUSTMENT PROCEDURE
1. Adjustment method after PWB and/or IC replacement due to repair
The unit is set to the optimum at the time of shipment from the factory.
If any value should become improper or any adjustment is necessary due to the part replacement, make an adjustment according to the following procedure.
1. Procure the following units in order to replace the main unit
MAIN UNIT: DKEYDF455FM06 (LC-40/46LE812E, LC-40/46LX812E)
DKEYDF455FM07 (LC-40/46/52LE822E, LC-40/46LU822E)
NOTE: [Caution when replacing ICs in the main unit (IC501, IC2002)]
The above ICs are EEPROMs storing the EDID data of PC, and Monitor microcomputer.
Before replacing the relevant part, procure the following parts in which the data have been rewritten.
IC501 RH-iXD108WJQZS PC EDID
IC2002 RH-iXC786WJNJQ Monitor microcomputer
NOTE: [Caution when replacing ICs in the main unit (IC8401, IC3302)]
When replacing either IC8401 or IC3302, exchange MAIN units for DKEYDF455FM06/07
Each part should not be individually exchanged.
IC8401 RH-iXC147WJQZQ Flash
IC3302 RH-iXC951WJQZQ Main CPU
NOTE: HDMI ROM Writing
After replacing IC1504, execute “HDMI EDID WRITE” on the page 5/21
Please execute it after checking MODEL NAME & INCH SIZE. are correct.
IF MODEL NAME & INCH SIZE. are not correct, set them previously. (Refer to 2)
The ROM data based on information of MODEL NAME & INCH SIZE
1) Enter the process adjustment mode in TV.
2) Use the cursor keys ( UP/ DOWN ) and CH keys (UP/ DOWN) of R/C to select the item [HDMI EDID WRITE] on the page 5/21.
2. After replacing the LCD panel or LCD control/MAIN UNIT, check MODEL NAME in the following procedure.
1) Enter the process adjustment mode in TV.
2) Use the cursor keys (UP/ DOWN ) and CH keys (UP/ DOWN ) of R/C to select the item [MODEL NAME] on the page 21/21.
3) Verify that the Model name is displayed.
4) If the Model name doesn't match, select the values of the Model name with the VOL keys (+/-).
5) After selection in Step 4), press the OK key, and it is completed with OK displayed.
6) Use the cursor keys (UP/ DOWN ) and CH keys (UP/ DOWN ) of R/C to select the item [PANEL_SIZE] on the page 21/21.
7) Verify that the panel size is displayed.
If the size doesn't match, select the values of the panel size with the VOL keys (+/-).
9) After selection in Step , press the OK key, and it is completed with OK displayed.
3. After replacing the LCD panel or LCD control PWB, adjust the VCOM in the following procedure.
1) Enter the process adjustment mode.
2) Use the cursor keys (UP/ DOWN ) and CH keys (UP/ DOWN) of R/C to select the item [VCOM ADJ] on the page 10/21.
3) Press the OK key to verify that the adjustment pattern is displayed.
4) Use VOL keys (+/-) of R/C to adjust the flicker in the center of the screen to minimum.
5) When the optimal state is achieved in Step 4, press the OK key to turn the pattern to OFF.
2. Notes of Touch sensor unit (LC-40/46/52LE822E, LC-40/46LU822E)
Touch sensor unit (RUNTKA690WJQZ) is fixed directly in the module glass.
The unit cannot never be recycled when exfoliated from the module glass.
Therefore, please exchange the touch sensor units when the module glass is changed.
Please note the adhesion and mixing of dust for the module glass when the module glass and the touch sensor unit are exchanged.
Module glass
40inch: CPNLHA019WE11
46inch: CPNLHA020WJ11
52inch: CPNLHA021WJ11
3. Method of shuts down for Power supply
Please execute the following procedures to shut down Power supply from the state of normal operation.
1) Keep touching the power supply key on the set for 5 seconds from the state of watching.
* The screen disappears when power supply key is touched, but Keep pushing the power supply key.
2) A central icon lights between 500ms when the power supply shuts down.
Please separate the finger from the power supply key when lighting of a central icon is confirmed
Lamp Error detection
1. Function
This LCD colour TV set incorporates a Lamp error detection feature that automatically turns off the power for safety under abnormal lamp or lamp circuit conditions. If by any chance anything is wrong with the lamp or lamp circuit or if the lamp error detection feature is activated for some reason, the following will result.
1) The power is interrupted in about 500ms after it is turned on.
(A central icon on the front of the TV flash on and off.: ON for 400ms and OFF for 1600ms.).
2) If the above phenomenon 1) occurs 5 times, it becomes impossible to turn on the power.
(A central icon keep flashing on/off.)
2. Measures
1) Set the lamp error detection to OFF
Enter the adjustment process mode, referring to “4. Entering and exiting the adjustment process mode.”
The adjustment process mode can ignore “5 times count”, so If the above phenomenon 1) occurs 1~4 times, the lamp will go out.
If Lamp Error detection pin (6pin of LB: P9602) is “High” by a trouble with the lamp and lamp circuit, it can boot-up by the adjustment process mode.
Please execute “Lamp Error detection off-mode”.
While holding down the “VOL (-)” and “CH ( )” keys on the set at once, touch the power supply key on the set.
After a central icon flash off, separate the fingers from key on the set.
Touch the power supply key on the set again, so the power will boot-up.
Then, you can check the operation to see if the lamp and lamp circuit are in trouble.
If you fail boot-up, retry the procedure.
2) Resetting the lamp error count
After the lamp and lamp circuit are improved from a trouble, reset the lamp error count.
(Because the power cannot be turned on, if a lamp error is detected 5 consecutive times)
a) Enter the adjustment process mode, referring to “4. Entering and exiting the adjustment process mode.”
b) Using the cursor ( LEFT/ RIGH) key, move to the cursor to [LAMP ERROR RESET], Line 8 on adjustment process mode service page 2/21.
c) With the cursor (LEFT / RIGH) keys, select the [LAMP ERROR RESET] value.
Finally press the cursor (OK)., the count is reset.
Check LAMP ERROR Count on adjustment process mode Page 2/21.
White Balance Adjustment
For white balance adjustment, adjust the offset values on pages 11/21.
[Condition of the unit for inspection] : Modulated light (+16), Colour temperature (High)
AV MODE: DYNAMIC
Active Backlight: OFF
OPC: OFF
Asing Time: Min,60 minute
[Input signal condition] : HDMI 1080i 15IRE (LO), 78IRE (HI)
[Adjustment reference device] : Minolta CA-210
[Adjustment procedure]
1) Display the current adjustment status at R/G/B_GAIN (HI). (Page 11/21 of process adjustment)
The signal of 78IRE is input.
2) Read the value of the luminance meter. x = 0.272, y = 0.277
3) Change R_GAIN (HI)/B_GAIN (HI) (Adjustment offset value) on page 11/21 of process adjustment so that the values of the luminance meter
approach x = 0.272 and y = 0.277.
(Basically, G is not changed. If adjustment fails with R and B, change G. When G is lowered, the weaker of R or B must be fixed.)
4) Display the adjustment status of the current R/G/B_GAIN (LO).
The signal of 15IRE is input.
Change R_GAIN (LO)/B_GAIN (LO) (adjustment offset value) on page 11/21 of process adjustment so that the values of the luminance meter
approach x = 0.272 and y = 0.277.
5) Both HI and LO are repeating the step from 1 to 4 until becoming an aim value.
[Adjustment reference standard value]
Adjustment spec ± 0.002 Inspection spec ± 0.004 (point LO)
Adjustment spec ± 0.001 Inspection spec ± 0.002 (point HI)
6) After completing adjustments, set EEP SAVE (21/21) to ON in the process menu to save the white balance adjustment value.
Confirmation item
1. HDMI-CEC Inspection
After repairing the CEC function, check the operation about HDMI-CEC circuit
2. CI card Inspection
After repairing the CI function, check that the DTV signal is received in the UK setting by inserting CAM
And check the KEY certification by inserting CAM which is prepare for CI+
3. LAN Inspection
After repairing the LAN function, check the communication by connecting PC and LAN terminal.
Initialization to factory settings
[Factory setting with adjustment process mode]
# Enter the adjustment process mode.
# Move the cursor to [INDUSTRY INIT] on page 2/21.
# Use the R/C key to select a region from [EUROPE/RUSSIA] and press the [OK] key.
# “EXECUTING” display appears.
# When succeeding: Background colour (green)
When failing: Background colour (red)
The following items are initialized in the factory setting.
1) User settings
2) Channel data (e.g. broadcast frequencies)
3) Maker option setting
4) Password data
Upgrading the software
1. Turn on the AC power.
2. Insert the upgrading USB flash memory for upgrade into the service slot.
(After a while, an external input changes into USB automatically.)
3. Use the Menu button and cursor keys ( LEFT/RIGHT /UP /DOWN  ), CH keys (UP /DOWN ) of R/C or on the set to select Menu - Setup - Information - Software update on OSD menu.
4. The message (Insert the USB memory device contains the software update file) shows up. Push OK when if there is no problem.
5. After a while, if software update file is detected in the USB memory device, the following screen shows up. Select OK when if there is no problem.
NOTE: If there is no software update file in the USB memory device, caution shows up.
Please insert the correct file and retry software update.
NOTE: If software update file in the USB memory device doesn't mutch this model, caution shows up.
Please insert the correct file and retry software update.
NOTE: If software update file in the USB memory device is already installed, caution shows up.
Please reconfirm the software version and reinstall (if necessary).
6. The caution for update showes up.
# The picture will temporary go dark until the software update display apeeares
# Wait several minutes and don't unplug the AC cord
Select OK when if there is no problem.
7. Software update starts.
Please wait for a while until the bar shows 100%
NOTE: Do not take out the USB memory device during updating.
8. When all the procedures are complete, the upgrade success screen shows up.
The new software version can be confirmed on screen.
After a while, Turn off power and boot-up automatically.
NOTE: TV is restarted automatically, the AC code need not be pulled out.
9. After boot-up, the following caution shows up.
Select OK when if there is no problem.
Software update is completed, please remove the USB memory device.
Entering and exiting the adjustment process mode
Please execute the following procedures to enter the adjustment process mode when the power supply shuts down.
1) While holding down the “VOL (-)” and “INPUT” keys on the set at once, touch the power supply key on the set.
Please separate the fingers from key on the set when boot-up is confirmed with lighting of a central icon etc.
After a while, The letter “K” appears on the screen. This state is in Inspection mode.
2) Next, hold down the “VOL (-)” and “CH ( DOWN )” keys on the set at once.
Multiple lines of blue characters appearing on the screen indicate that the set is now in the adjustment Process mode.
If you fail to enter the adjustment process mode (the display is the same as normal startup), retry the procedure.
3) To exit the adjustment process mode after the adjustment is done, unplug the AC power cord to force off the power.
(When the power is turned off with the remote controler, once unplug the AC power cord and plug it in again. In this case, wait for 10 seconds or so after unplugging.)

SHARP LC-26S7E-BK - LC-32S7E-BK - Service mode - Software updating - White balance adjustment -Power supply schemtic diagram - L6599 - YNY277 - LCD Television repair and service - Manual Tips

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• How to enter service mode 
  
• Software updating procedure  
  
• Power supply schematic digram 
  
  

SERVICE MODE
How to access service mode  Enter factory mode menu: Press the key “1999” on remote control.
Press UP, DOWN  to choose the value
Press OK to fix the value.
Press OK to exit the factory mode when choose “exit” value,
SOFTWARE UPGRADE PROCEDURE
Connect to TV USB port to upgrade the software firmware.
Please follow the following step to upgrade the firmware.
1. Copy the software firmware (*.bin) to USB Disk.
2. Insert the USB Disk to TV USB port.
3. Unplug the AC cord.
4. AC power on
5. Reboot TV to update SW automatically. During upgrade FW the front LED will red light blink.
6. When FW upgrade is finished LED will stop blinking and keep at (Blue + red) color.
After finish upgrade process.
7. Remove USB disk from TV.
8. Turn AC Off then On to reboot TV
Check the software version is correct or not. (Menu /Installation/Current software)
White Balance Adjustment 
General set-up:
Equipment Requirements: Color analyzer.
Input requirements:
For SZ factory:
Signal Type : RF signal
Set to PAL D/K system, frequency=184.25MHz ( for China model ) with white pattern of 80%
Set to PAL B/G system, frequency=64.25MHz ( for AP model ) with white pattern of 80%
Input Signal Strength : 10mV (80 dBuV) terminal voltage.
Input Injection Point : TV Tuner input
For FQ factory:
Signal Type : CVI (YPbPr)
Using Quantum Data Pattern Generator 802G or 802R or 882; Set to 576i with white pattern of 80% (flat patten)
Alignment Request in the center of the screen
Apply full white pattern, select smart setting to be Standard. Adjusting SCALER GAIN R G B to reach W/D and luminance in factory mode as below.
Adjust Color Temp in the factory Mode OSD by adjusting GAIN R xxx G xxx B xxx in factory mode

Color Temp.	x	y
Cool	0.272 + 0.01	0.277+ 0.01
Normal	0.289 + 0.01	0.291 + 0.01
Warm	0.314 + 0.01	0.319 + 0.01

# R/G/B Gain value <= 127 to avoid satsuation at 32-grey pattern.
# At TV Luminance at Normal >= 250 cd/m2 when contrast and brightness and color are 100%.
# At PC Luminance at Normal >= 250 cd/m2 when contrast and brightness are 100%.
#  These group settings about color temp are also applied automatically into
HDMI1/CVI(for SZ factory)/SIDE AV/PC/TV(for FQ factory). That means TV/HDMI/CVI/PC are used the same setting.
Picture check
Auto Color Adjust 
For CVI (YPbPr) source
General set-up:
Equipment : Quantum Data Pattern Generator 802G or 802R or 882;
Apply 576i, and the pattern TVBAR100
Alignment method:
Initial Set-up : Set Smart picture as “Standard”
Access to factory OSD first, then to enable AUTO-COLOR to get HD ADC OFFSET and HD ADC
GAIN. Check 32 Gray scales can be distinguishable Process
# Press MENU key
#Press digit “1999” to enter factory mode (Fig. 2)
# Press UP, DOWN to move curser to “AUTO COLOR ”
# Press OK to do “ADC GAIN” and “ADC OFFSET”
# “SAVE” and “EXIT”
For PC (DSUB) source
Set Smart picture as “Standard” and apply 1024x768 @60Hz mode with 50 Black and 50 White pattern at the factory mode
Activate AUTO-COLOR function for auto ADC offset and gain setup.
ICS USED IN POWER SUPPLY 
L6599
Description
The L6599 is a double-ended controller specific for the resonant half-bridge topology. It provides 50 % complementary duty cycle: the high-side switch and the low-side switch are driven ON\OFF 180° out-of-phase for exactly the same time. Output voltage regulation is obtained by modulating the operating frequency. A fixed deadtime inserted between the turn-OFF of one switch and the turn-ON of the other one guarantees soft-switching and enables high-frequency operation.
To drive the high-side switch with the bootstrap approach, the IC incorporates a high-voltage floating structure able to withstand more than 600 V with a synchronous-driven high-voltage DMOS that replaces the external fast-recovery bootstrap diode. The IC enables the designer to set the operating frequency range of the converter by means of an externally programmable oscillator.
At start-up, to prevent uncontrolled inrush current, the switching frequency starts from a programmable maximum value and progressively decays until it reaches the steady-state value determined by the control loop. This frequency shift is non linear to minimize output voltage overshoots; its duration is programmable as well. The IC can be forced to enter a controlled burst-mode operation at light load, so as to keep converter's input consumption to a minimum. IC's functions include a not-latched active-low disable input with current hysteresis useful for power sequencing or for brownout protection, a current sense input for OCP with frequency shift and delayed shutdown with automatic restart. A higher level OCP latches off the IC if the first-level protection is not sufficient to control the primary current. Their combination offers complete protection against overload and short circuits. An additional latched disable input (DIS) allows easy implementation of OTP and/or OVP.
An interface with the PFC controller is provided that enables to switch off the pre-regulator during fault conditions, such as OCP shutdown and DIS high, or during burst-mode operation.
PIN CONFIGURATION 
1 C SS
Soft start. This pin connects an external capacitor to GND and a resistor to RFmin (pin 4) that set both the maximum oscillator frequency and the time constant for the frequency shift that occurs as the chip starts up (soft-start). An internal switch discharges this capacitor every time the chip turns OFF (VCC < UVLO, LINE < 1.25 V or > 6 V, DIS > 1.85 V, ISEN > 1.5 V, DELAY > 3.5 V) to make sure it will be soft-started next, and when the voltage on the current sense pin (ISEN) exceeds 0.8V, as long as it stays above 0.75 V.
2 DELAY
Delayed shutdown upon overcurrent. A capacitor and a resistor are connected from this pin to GND to set both the maximum duration of an overcurrent condition before the IC stops switching and the delay after which the IC restarts switching. Every time the voltage on the ISEN pin exceeds 0.8 V the capacitor is charged by an internal 150µA current generator and is slowly discharged by the external resistor. If the voltage on the pin reaches 2 V, the soft start capacitor is completely discharged so that the switching frequency is pushed to its maximum value and the 150 µA is kept always on. As the voltage on the pin exceeds 3.5 V the IC stops switching and the internal generator is turned OFF, so that the voltage on the pin will decay because of the external resistor. The IC will be soft-restarted as the voltage drops below 0.3V. In this way, under short circuit conditions, the converter will work intermittently with very low input average power.
3 CF
Timing capacitor. A capacitor connected from this pin to GND is charged and discharged by internal current generators programmed by the external network connected to pin 4 (RFmin) and determines the switching frequency of the converter.
4 RFmin
Minimum oscillator frequency setting. This pin provides a precise 2 V reference and a resistor connected from this pin to GND defines a current that is used to set the minimum oscillator frequency. To close the feedback loop that regulates the converter output voltage by modulating the oscillator frequency, the phototransistor of an optocoupler will be connected to this pin through a resistor. The value of this resistor will set the maximum operating frequency. An R-C series connected from this pin to GND sets frequency shift at start-up to prevent excessive energy inrush (soft-start).
5 STBY
Burst-mode operation threshold. The pin senses some voltage related to the feedback control, which is compared to an internal reference (1.25 V). If the voltage on the pin is lower than the reference, the IC enters an idle state and its quiescent current is reduced. The chip restarts switching as the voltage exceeds the reference by 50 mV. Soft-start is not invoked. This function realizes burst-mode operation when the load falls below a level that can be programmed by properly choosing the resistor connecting the optocoupler to pin RFmin (see block diagram). Tie the pin to RFmin if burst-mode is not used.
6 ISEN
Current sense input. The pin senses the primary current though a sense resistor or a capacitive divider for lossless sensing. This input is not intended for a cycle-by-cycle control; hence the voltage signal must be filtered to get average current information. As the voltage exceeds a 0.8 V threshold (with 50 mV hysteresis), the soft-start capacitor connected to pin 1 is internally discharged: the frequency increases hence limiting the power throughput. Under output short circuit, this normally results in a nearly constant peak primary current. This condition is allowed for a maximum time set at pin 2. If the current keeps on building up despite this frequency increase, a second comparator referenced at 1.5 V latches the device off and brings its consumption almost to a “before start-up” level. The information is latched and it is necessary to recycle the supply voltage of the IC to enable it to restart: the latch is removed as the voltage on the Vcc pin goes below the UVLO threshold. Tie the pin to GND if the function is not used.
7 LINE
Line sensing input. The pin is to be connected to the high-voltage input bus with a resistor divider to perform either AC or DC (in systems with PFC) brownout protection. A voltage below 1.25 V shuts down (not latched) the IC, lowers its consumption and discharges the soft-start capacitor. IC’s operation is re-enabled (soft-started) as the voltage exceeds 1.25 V. The comparator is provided with current hysteresis: an internal 15 µA current generator is ON as long as the voltage applied at the pin is below 1.25 V and is OFF if this value is exceeded. Bypass the pin with a capacitor to GND to reduce noise pick-up. The voltage on the pin is top-limited by an internal zener. Activating the zener causes the IC to shut down (not latched). Bias the pin between 1.25 and 6 V if the function is not used.
8 DIS
Latched device shutdown. Internally the pin connects a comparator that, when the voltage on the pin exceeds 1.85 V, shuts the IC down and brings its consumption almost to a “before start-up” level. The information is latched and it is necessary to recycle the supply voltage of the IC to enable it to restart: the latch is removed as the voltage on the VCC pin goes below the UVLO threshold. Tie the pin to GND if the function is not used.
9 PFC_STOP
Open-drain ON/OFF control of PFC controller. This pin, normally open, is intended for stopping the PFC controller, for protection purpose or during burst-mode operation. It goes low when the IC is shut down by DIS > 1.85 V, ISEN > 1.5 V, LINE > 6 V and STBY < 1.25 V. The pin is pulled low also when the voltage on pin DELAY exceeds 2V and goes back open as the voltage falls below 0.3V. During UVLO, it is open. Leave the pin unconnected if not used.
10 GND
Chip ground. Current return for both the low-side gate-drive current and the bias current of the IC. All of the ground connections of the bias components should be tied to a track going to this pin and kept separate from any pulsed current return.
11 LVG
Low-side gate-drive output. The driver is capable of 0.3 A min. source and 0.8 A min. sink peak current to drive the lower MOSFET of the half-bridge leg. The pin is actively pulled to GND during UVLO.
12 VCC
Supply Voltage of both the signal part of the IC and the low-side gate driver. Sometimes a small bypass capacitor (0.1 µF typ.) to GND might be useful to get a clean bias voltage for the signal part of the IC.
13 N.C.
High-voltage spacer. The pin is not internally connected to isolate the high-voltage pin and ease compliance with safety regulations (creepage distance) on the PCB.
14 OUT

High-side gate-drive floating ground. Current return for the high-side gate-drive current. Layout carefully the connection of this pin to avoid too large spikes below ground.
15 HVG
High-side floating gate-drive output. The driver is capable of 0.3 A min. source and 0.8A min. sink peak current to drive the upper MOSFET of the half-bridge leg. A resistor internally connected to pin 14 (OUT) ensures that the pin is not floating during UVLO.
16 VBOOT
High-side gate-drive floating supply Voltage. The bootstrap capacitor connected between this pin and pin 14 (OUT) is fed by an internal synchronous bootstrap diode driven in-phase with the low-side gate-drive. This patented structure replaces the normally used external diode.