User manual LG RU-27FB31C

[. . . ] Keep wires away from high voltage or high temperature parts. ww USA . w To Instrument's exposed METALLIC PARTS If any fuse (or Fusible Resistor) in this monitor is blown, replace it with the specified. Leakage Current Hot Check circuit Due to high vacuum and large surface area of picture tube, extreme care should be used in handling the Picture Tube. Do not lift the Picture tube by it's Neck. jel 0. 15uF It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitary that may be inadvertently introduced during the service operation. Leakage Current Cold Check(Antenna Cold Check) htt p: With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on positioin, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1M and 5. 2M. [. . . ] 1EA t ADJUSTMENT INSTRUCTIONS 2) After turning RV401, voltage of D. M. M adjustment as same as Va voltage which on label of panel right/top. (Deviation; ±0. 5V) (2) Supply Gray Pattern (216 Level Full Size Pattern) signal to VIDEO input. 6) (3) To adjust, stick sensor to 216 Gray Level Pattern, press ADJ key twice(White Balance) on remote control. For adjustment and D, E on reomte control for adjustment mode to select Red Gain and Blue Gain, press VOL +, Key and adjust it until color coordination becomes as below. X; 0. 283±0. 003, Y; 0. 297±0. 003 Color Temperature; 9, 300°K±500°K 5-4. 3501V00182A B/D (1) Va Adjustment 1) After receiving 100% Full White Pattern, HEAT RUN. 2) Connect + terminal of D. M. M to Va pin of P805, connect - terminal to GND pin of P805. 3) After turning RV601, voltage of D. M. M adjustment as same as Va voltage which on lable of panel right/top (Deviation; ±0. 5V) (4) Exit adjustment mode using A Key. (2) Vs Adjustment 1) Connect + terminal of D. M. M to Vs pin of P805, connect ­ terminal to GND pin of P805. 2) After turning RV401, voltage of D. M. M adjustment as same as Va voltage which on label of panel right/top. Pattern Equipment PC Pattern Generator (VG828, VG854, 801GF, MSP3240A) (16 Gray Scale Pattrtn output(RGB output Level: 0. 7Vp-p) 6. Required Equipment Color Analyzer (CA-100 or same product) 6-2. Check the VSC Vs-ON signal When remove the Y, Z B/D Module Input Connector, Power Board high tension output voltage Drop it occurs? - 12 - . ne t TROUBLE SHOOTING GUIDE 1-2. Sony Power Board Structure htt p: 1 2 3 //w ww T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans . w - 13 - jel . ne t TROUBLE SHOOTING GUIDE 1-3. Sanken Power Board Structure htt p: 1 2 3 //w ww T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans . w - 14 - jel . ne t TROUBLE SHOOTING GUIDE 2. No Power (1) Symptom ¯ ¯ Does't minute discharge at module. Non does not come in into the front LED. (2) Check follow No Is plug in power cord?Yes No Plug in power cord. Is connect the Line Filter and Power Switch Cable?Yes Yes Is normal the Fuse(F101) on Power Board?Yes Is connect the Power Board and 7P of VSC Board Cable?Yes //w No No Is connect the Power Switch and Power Board Cable?Yes htt p: After remove the cable connect to Power Board(except the CN101 connection cable), authorizes the AC voltage marking on manual. When ST-BY 5V does not operate, replace Power Board. ww No Is connect the Power Switch and Power Board Cable? No . w - 15 - jel Connect Cable. [. . . ] No Replace IC802 Yes Is normal the RF/AV/Component sound? htt p: //w No ww - 22 - . ne (2) Check follow t WIRE IR RS232_RX/ TX Co mp _480I/ P RGB PC RGB_Dat a ADC w/ PLL TX IR 74ACT253 TX_Out Co mp / RGB_SW RS232 ST3232C CXA_RGB RGB DTV RX0/1, TX0/1 RGB PC/ DTV M52758F Sw it c h g m 1601 Sc aler ( Malib u) 24 24 ZHINE RGB (PC/DTV) 74HCT08 CXA2101 IEP DVI RX w/ HDCP Comp DTV RGB H/ V SCL/ SDA 24LC21 DVI_Dat a Main_Vid eo / 24 Sub _Vid eo / Co mp / RGB_SW 8 Fro m Malib u 10 DVI (PC/DTV) 24LC21 Text Vid eo f o r Text RX/ TX0/ 1/ 2, RX/ TXC SCL/ SDA Dig it al BOARD Main_V htt p: TX0/ 1/ 2/ 3/ C Disp _En SDATA SCLK, SLE Main_YC Scart 1 VPC3230 (M ) Video Decoder YCb Cr S2300 / DeInt erlac er 8 TV OUT Vin1 ( CVBS) 1H RGB //w HY5DU283222A SDRAM ( 128MB) Main_V Main_YC Vin2 ( CVBS ) BLOCK DIAGRAM - 23 CXA2069Q SWITCH TU_Main TU_Sub Vin4 Text _V YCin4 Scart 2 MNT OUT Scart 3 VPC3230 (S) Video Decoder Vin3 (CVBS ) ww HY57V64322 SDRAM ( 8MB) AM29LV F-ROM (1MB ) RF Tuner (M) Tuner ( S ) . w AM29LV160 F-ROM CVBS S-VHS SDA6001 Text Processor jel HYV641620 SRAM Po s-t p ro c es sing Blo c k is o m it t ed . so alled JEPICO, in this c ase -c TMDS TX is also req uired . So und Pro c es sing Blo c k Diag ram is sep arat ed . RCA yp e Blo c k Diag ram is also -t sep arat ed . [. . . ]