4.3 Power Supply Requirements

Transcript

1 EN0 Service Manual. Power Supply Requirements.. Input Requirements INVERTER MAX BRITHNESS (Vadj:.0v), LOAD=0KΩX(ROOM TEMPERATURE ± ) Input voltage ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK Vin 0.. V Input current Iin 0 00 ma FOR LOAD Output Current Iout.0..0 ma FOR LOAD Frequency H.V open H.V Load F KHZ FOR LOAD Vopen Vrms NO LOAD Vload Vrms RL=0KΩ Start voltage Vst Vrms RL=CCFL Protect delay time PDT 0. Sec.. Output Requirements INVERTER MIN BRITHNESS (Vadj:0.0v), LOAD=0KΩX(ROOM TEMPERATURE ± ) ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK Input voltage Vin 0.. V Input current Iin 0 0 ma FOR LOAD Output Current Iout.0..0 ma FOR LOAD Frequency H.V open F KHZ FOR LOAD Vopen Vrms NO LOAD Start voltage H.V Load Vst Vload Vrms RL=CCFL Vrms RL=0KΩ 0

2 Gy EN0 Service Manual Chromaticity of Blue(CIE 9) Bx By Luminance of white Note [Note ] YL 0 00 cd/ m IL=.0 marms White Uniformity δw.. Note Cross talk.0% Note.. Parameter Guide for CFL Inverter The backlight system is an edge-lighting type with - CCFL(Cold Cathode Fluorescent Lamp). The characteristics of four lamps are shown in the following tables. PARAMETER SYMBOL MIN TYP MAX UNIT REMARK Lamp current range IL marms Note Lamp voltage VL Vrms Lamp power consumption PL. W Note IL=.0mA Lamp frequency FL khz Note Established starting voltage Vs 00 Vrms Ta= 0 Vrms Ta=0 Note Lamp life time LL hour Note

3 EN0 Service Manual.. Inverter/Power Board Inverter Block Diagram

4 EN0 Service Manual Power Block Diagram

5 EN0 Service Manual R0 R0 C0 0K /W 0K /W 0.uF RN0 0K /W RN0 0K /W OUT-L OUT-L- CN0 9 0 OUT-R OUT-R- C0 0.uF FB0 FB0 U0 A0 VCC A WP A SCL GND SDA C VCCV VCCV C R R C D0 LL VCCV VCCV, R0 0K /WR0 00 /W R0 0K /WR09 00 /W R0 C0 0uF/V 0K /W R 0K /W R 0K /W ST_DET ST_DET C0 C0 INT Standby Mute pf X0 0MHz pf R U0 EA/VP XTAL XTAL RESET P. INT0/P. INT/P. ALE/P PSEN P.0 P. P. P. P. P. P. P. WEP-0 R R0 R VSS VCC P0.0 P0. P0. P0. P0. P0. P0. P0. P.0 P. P. P. P. P. P. P. T0/P. T/P. P./WR P./RD P./TXD P.0/RXD DVI-DSUB SELECT Mute_key POWER ENTER RIGHT LEFT AUTO LED_B LED_O LED_G R0 0K /W R0 0K /W R0 R R 00 /W R 00 /W CN0 RR 0K /W HWRESET onpanel_v/.v onbacklite CSZ SCL SDA AD0 AD AD AD DDC_DAT DDC_CLK TXD RXD C C FB0 R Volume C R 0 /W.K /W R LED_G Q0 CN0 PMBS90 DVI-DSUB SELECT LED_GRN AUTO R0 0 /W RIGHT R 0 /W POWER R 0 /W 9 0 C0 C0 C0 OUT-L OUT-L- 0.00uF 0.00uF 0.00uF CONA LED_BLUE LED_ORAE R 0 /W.K /W R9 LED_B PMBS90 Q0 Mute_key OUT-R C0 C09 OUT-R- 0.00uF 0.00uF R 0 /W ENTER R 0 /W LEFT R 0 /W.K /W R9 PMBS90 Q0 LED_O. Inverter/Power Board R90 /W C uF/00V - DB90 KBP0M L90 C90 0.uF/0V D90 N C90 0uF/00V C90 0.uF R90 M /W R90 M /W R90 M /W R90 M /W C90 0uF C uF/KV D90 PS0R T90 O 9 R90 00K W O, D90 UF00, R90 0 /W 0, O D90 R9 C9 /W 0.00uF/00V D9 L90 C9 000uF/V L90 C9 000uF/V C9 0uF/V C9 0uF/V F90 0 /W FB90 0 /W ZD90 SML FB90 C9 0.uF CON0 V GND 0 9 GND GND V V DIM ON/OFF R90 M /W C90 L90 0.uF/0V R90 M /W C90 C uF/0V 0.00uF/0V t F90 FUSE NR90 NTCR D90 N P90A Wire Harness IC90 SG R9 K /0W SG R9 0K /W R9 N.C/00 R909.K /W ZD90 RLZ0B R9 N.C_00 R9 Q90 00 /W PAP C90 0.uF R9 JUMPER C9 N.C R9 0K /W C9 0.00uF C909 R90 0.uF.K /W Q90 PC9P R9.K /W Q90 SK99 FB90 BEAD R W D90 N C9 R uF/0V 00 /W ZD90 HZB IC90 PCFY P C9 0.uF IC90 HTL R9 K /W R99 JUMPER C9 0.0uF ZD90 HZC R9 K /W R9 K /W R9 K /W R9.K /W R9.K /W C9 0.uF CN90 <Title> Size <OrgName> Document Number Rev B PWPCB Date: Sheet of

6 EN0 Service Manual V C0 C 0uF/V 0uF/V C0 0.uF/V Q0 DTAWKA C uf/v R.9K /W R.9K Q0 SIDY-T D0 SR L0 D0 RLZB R K R K R K /W R K /W PT0 9 C pf/kv C pf/kv CN0 NO/OFF DIM R0 0K C0 uf/v R0 0K Q0 DTCWKA R0.K /W R0 K R 0 Q0 MPS90 Q0 MPS90 R 0 /W C uf/v R0 K R K Q09 SC0 C 0.uF/00V Q0 SC0, POWER X'FMR R K D09 N D0 N R0 K C09 uf/v R0 K D0 N R 90 /W C0 0.uF C 0.uF/V R K C9 uf/v R 0 C0 0uF R0 OPEN C0 0.uF R0 K CT REF RT SCP IN IN IN- IN- FBK FBK DTC DTC OUT OUT 0 GND Vcc 9 C0 0.uF U0 TLACNSR C uf/v R.9K /W R.9K Q0 SIDY-T D0 SR L0 D0 RLZB R K R9 K R0 K R K PT0 9 C pf/kv C pf/kv CN0 C0 0pF R0 0K R0 0K C0 uf/v R09.K /W R K R9 0 Q0 MPS90 Q0 MPS90 R 0 /W C uf/v R K R K Q SC0 C 0.uF/00V Q SC0, POWER X'FMR R K D0 N D0 N R K D0 N R 90 /W AOC (Top Victory) Electronics Co., Ltd. Title is power GND C 0.uF/V R9 K C0 uf/v R 0 Size Document Number Rev B A is signal GND Friday, July, 00 Date: Sheet of

7 . Inverter/Power Board EN0 Service Manual. Keypad Board

8 EN0 Service Manual.. Power/Inverter Board.) No power Check to CN0 Pin and pin = V Check Interface board Check AC line volt 0V or 0V Change F90, check BD90,Q90,IC90 Check the voltage of C90() Check bridge rectified circuit Check start voltage for the pin of IC90 Change IC90 Repeating the start voltage Check the auxiliary voltage is smaller than 0V ) Check IC90, IC90 ) Check Q90,Q90 OVP circuit Check R99, D90,D9,D9,D9, ZD90

9 .) W / LED, No Backlight EN0 Service Manual Check C0() =V Change F90 Check D0/Q09/Q0 or D0/Q/Q Check ON/OFF signal Check Interface board Check U0 pin9=v Change Q0 or Q0 Check the pin of U0 have saw tooth Change U0 Check D0(-),D0(-) have the output of square wave at short time. Check Q0/Q0/Q0/D0 or Q0/Q0/Q0/D0 Check the resonant wave of pin & pin for PT0/PT0 Check Q09/Q0/C or Q/Q/C Check the output of PT0/PT0 Change PT0or PT0 Check connecter & lamp