2 TIME- POWER SUPPLY
3 TIME- DC 3.3V REGULATOR
4 TIME- PANEL POWER PROBLEM
5 TIME- TCON POWER PROBLEM
6 TIME- BACKLITE ERROR
7 TIME- TEMPERATURE (OVER HEATING)
8 TIME- AUDIO PROBLEM
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CKV Gate Driver Basics
CKV CKVb1 CKVB2 Gate drive
CKV, CKVb1, and CKVB2 are terms commonly used in power electronics, particularly in the context of gate drivers for power semiconductor devices such as MOSFETs and IGBTs.
CKV (also known as the Charge Kaskode Voltage) is a voltage that is used to charge the gate of a power semiconductor device to turn it on. It is typically generated by a charge pump circuit within the gate driver IC.
CKVb1 (Charge Kaskode Voltage bias 1) is a voltage used to bias the internal circuitry of the gate driver IC that generates the CKV voltage.
CKVB2 (Charge Kaskode Voltage bias 2) is a voltage used to bias the high-side driver in a half-bridge configuration gate driver IC.
The gate driver IC is responsible for providing the necessary gate drive signals to the power semiconductor devices to switch them on and off. The CKV voltage is an important parameter in determining the turn-on and turn-off characteristics of the device, and its accuracy and stability are critical to the overall performance and reliability of the system. The CKVb1 and CKVB2 biases are also important to ensure proper operation and protection of the gate driver IC.
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Panel Cof and Scalar Information Guide
1) TAB p/n: Unknown
Panel p/n: LTZ400HA03
T-con Board: 400HASR2LV0.1 (Sony KDL-40W2000)
2) TAB p/n: 5090-A CS19C (802PPTK54-A01, 742PPTSFP-A01)
Panel p/n: LTA320AA03, LTF320AA01, LTA320WT-L06(Panel)
T-con Board: 320WTS2LV2.7, 320WTC2LV3.7(TCON)_320WTS2LV2.6 (Source PCB)
3) TAB p/n: 8632CS02A
Panel p/n: LTY320W2-L02
T-con Board: 320W2SL4LV0
4) TAB p/n: 8651-CCV18
Panel p/n:
T-con Board:
5) TAB p/n: _8656-F CYOB
Panel p/n: HV320WX2-201
T-con Board:
6) TAB p/n: 8657D-CCBR
Panel p/n: CLAA215FA01
T-con Board: 215FA01CS
7) TAB p/n: 8658-B CBJV
Panel p/n: V315B6-L01
8) TAB p/n: 8658-B
Panel p/n: V260B2
9) TAB p/n: DB7931-FT01M (LN262747)
Panel p/n: LTA460HW04 (Toshiba 46ML963RB)
10) TAB p/n: DB7931-FT01M (LN262975)
Panel p/n: LTA460HW04_Toshiba 46ML963RB-1
11) TAB p/n: 943ST65
Panel p/n: LC420WUL-SBM2
12) TAB p/n: LH169K01
Panel p/n: LTY460HH-LH2
13) TAB p/n: I27GCBAA-X01, I25XRAC-X01
Panel p/n: LTA460HB07
14) TAB p/n: NT39329-C0264A
Panel p/n: (Samsung LE46A558P3F )
T-con Board: T460HW02 V0
15) TAB p/n: NT39329H-C0259
Panel p/n: T230XW01V1
16) TAB p/n: NT39504H-C02E8C
17) TAB p/n: NT39530H-C5203A
Panel p/n: V315B5-CE3
18) TAB p/n: NT39538H-C1272
19) TAB p/n: NT39538N-C1272A
Panel p/n: T315CK07-BW2, HV320WX2-201
20) TAB p/n: RM7611WFDO-006
Panel p/n: T315XW02 VL
T-con Board: 8A9006CEA9 (Source PCB)
21) TAB p/n: RM76180FC-086
Panel p/n: T260XW04 V.3
22) TAB p/n: RM76311FC-805
Panel p/n: ST3151A04-1
23) TAB p/n: T6LC9(CCN.2KS) PBT7C40A1
Panel p/n: T315XW02 VB
24) TAB p/n:
Panel p/n: T260XW02
25) TAB p/n: 5090 A-CS19C
Panel p/n: LTY460HB08
T-con Board: 460HBSL2LV1.1
26) TAB p/n: 8658-BCBHU
Panel p/n: V315B3-L04
27) TAB p/n: SL765044
Panel p/n: LTA320WT-L05
28) TAB p/n: LH169K01
Panel p/n: LTA400HH-L01
29) TAB p/n:
Panel p/n: V260B1-L12
30) TAB p/n: 8658-ACBFV
Panel p/n: V400H1-L03
Imran Ashraf Support
CKV SIGNAL IN LCD TV
IMRAN ASHRAF HERE !!
This page will help you to identify the different names of CKV signals.
WHAT IS CKV ( CLOCK VERTICAL )SIGNAL?
Clock vertical signal is normally a square wave signal its contain high and low-level signals,
The high-level signal is the cut-in voltage of VGH voltage which is used to control the panel TFT.The low-level signal is the cut-in voltage of VGL voltage. which is also used to control the panel TFT.
CKV the signal name will differ from one board to another, sometimes while servicing we will get confused to identify the CKV signal.
what is a pair signal?
Pair signals mean after the level shifter section we will get the separate output like CKV 1 , CKVB 1 and STV 1. before entering to Gate Driver IC [ COF ] these three signals are synchronizing each other its called signal paring. depending on COF ic this pair will be increase or decrease. example single COF IC is available in scalar board single pair signal only available (ckv 1,ckvb 1, stv 1)
ckv is a positive pulse and ckvb is a generally negative pulse.
CKV SIGNAL OTHER NAMES
SAMSUNG PANEL
CKV 1 – CKVB 1 = STV 1 =STVP 1 (Pair signal)
CKV 2 – CKVB 2 = STV 2 = STVP 2 (Pair signal)
CKV3 – CKVB 3 = STV 3 = STVP 3 (Pair signal)
CKV 4 – CKVB 4 = STV 4 = STVP 4 (Pair signal)
AUO PANEL
HC1 = LC1
HC2 = LC2
HC3 = LC3
HC4 = LC4
LG PANEL [ONE ]
CLK 1 = VGH ODD
CLK 2 = VGH EVEN
LG PANEL [TWO ]
HC 1 = LC 1
HC 2 = LC 2
HC 3 = LC 3
HC 4 = LC 4
OLD MODEL PANELS
G1 = GCL 1
G2 = GCL 2
G3 = GCL 3
G4 = GCL 4
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