LG E700S Service Manual
LG E700S Manual
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- LG E700S | Service Manual - Page 1
http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-109 FACTORY MODEL: EB770G MODEL: StudioWorks E700B (EB770G-EA) StudioWorks E700S (EB770G-NA) E700S (EB770G-NA) E700S (EB770G-NA) *( ) ID LABEL Model No. CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS - LG E700S | Service Manual - Page 2
CONTENTS SPECIFICATIONS 2 SAFETY PRECAUTIONS 3 TIMING CHART 4 OPERATING INSTRUCTIONS 5 WIRING DIAGRAM 6 DISASSEMBLY 7 BLOCK DIAGRAM 8 DESCRIPTION OF BLOCK DIAGRAM 9 ADJUSTMENT 11 TROUBLESHOOTING GUIDE 13 EXPLODED VIEW 23 EXPLODED VIEW PARTS LIST 24 REPLACEMENT PARTS LIST 25 PIN - LG E700S | Service Manual - Page 3
monitor and AC power line before servicing the chassis. • In servicing an X-radiation problem. The basic monitor power on. IMPLOSION PROTECTION All used display tubes are equipped with an integral implosion protection system, but care should be taken to avoid damage and scratching during installation - LG E700S | Service Manual - Page 4
VIDEO SYNC TIMING CHART B A C E F D > Mode 1 2 3 4 H/V Sort Sync Polarity Frequency Total Period (E) H- 37.50 26.67 V - 74.99 13.335 H+ 46.88 21.33 V + 75.01 - LG E700S | Service Manual - Page 5
OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW MENU SELECT ID Label See Front Power Button 1. Power ON/OFF Button Use this button to turn the monitor ON or OFF. 2. Power Indicator This indicator lights up green when the monitor operates normally; in DPMS (Energy Saving) mode, - stand-by, suspend - LG E700S | Service Manual - Page 6
WIRING DIAGRAM P201 P402 P405 P501 P702 S P701 S+ FBT AC Socket P902 T1 Signal Cable P302 P301 G2 -6- - LG E700S | Service Manual - Page 7
(b), Back cover by pushing it upward. 4) Release the latch (c). 5) Slide the Back Cover away from the Front Cabinet of the monitor. Back Cover (c) Cabinet (a) Tip Spec. A(Width) : 5.0~15.0mm B(Depth) : 0.6~0.9mm C(Height) : 12.0mm C Tip AB (b) 1 3 3 2 2 2. TOTAL CHASSIS ASSEMBLY REMOVAL - LG E700S | Service Manual - Page 8
< OSD Control > BLOCK DIAGRAM Dynamic Focus Static Focus G1 Screen(G2) -8- SELECT 80V H.V OSD ON/OFF POWER BRIGHTNESS CONTRAST H / V POSITION H-Sync Sig V-Sync Sig Signal Cable R G I2C DATA(SDA) B I2C CLOCK(SCL) VIDEO PRE-AMP (IC302) LM1269 VIDEO MAIN AMP (IC303) LM2469 Heater ( 6. - LG E700S | Service Manual - Page 9
degaussing the shadow mask in the CRT during turning on the power switch. When you need to degauss in using the monitor, select DEGAUSS on the OSD etc.) 4) The controlled data of each mode is stored in itself. 5) User can adjust screen condition by each OSD function. The data of the adjusted - LG E700S | Service Manual - Page 10
eliminates retrace line by supplying negative pulse to the G1 of the CRT. And Brightness circuit is used for control of the screen brightness signal to the tilt coil which is attached near the deflection yoke of the CRT. 16. Video Pre-Amp Circuit. This circuit amplifies the analog video signal from - LG E700S | Service Manual - Page 11
the CDT so that automatic degaussing when turn on the monitor. But a monitor is moved or faced in a different direction, become poor color purity cause of CDT magnetized, then press DEGAUSS on the OSD menu. ADJUSTMENT PROCEDURE & METHOD - Install the cable for adjustment such as Figure 1and run the - LG E700S | Service Manual - Page 12
5. Input EDID Data. 1) Display color 15,0 cross hatch pattern at Mode 4. 2) EEPROM → Write EDID command and confirm "EDID Write OK!!" message of monitor. 3) Exit from the alignment program. 4) Power switch OFF/ON for EDID data save. 6. Adjustment for Focus. 1) Set the Brightness and Contrast to max - LG E700S | Service Manual - Page 13
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK FUSE OK? (F901) YES CHECK C908 VOLTAGE? (AC120V: 160VDC, AC220V: 304VDC) YES CHECK IC901 PIN 6 WAVEFORM (SQUARE WAVE COMES OUT?) YES CHECK D941, D942, D951, D961, D962, D971 VOLTAGE? YES TROUBLE IN Q903, Q952, Q951, Q942, Q941 - LG E700S | Service Manual - Page 14
PIN 1, 2, 3 ? YES CHECK R, G, B CATHODE VOLTAGE? YES TROUBLE IN CRT SOCKET 2. NO CHARACTER NO TROUBLE IN P302 5V LINE TROUBLE IN NO PC SIGNAL, P301 SIGNAL CABLE NO TROUBLE IN IC302 NO TROUBLE IN P303 12V LINE/ 80V LINE NO TROUBLE IN IC303 TROUBLE IN NO R331~R333, L311~L313 D307 - LG E700S | Service Manual - Page 15
ON) CHECK POWER INDICATOR GREEN or ORANGE? GREEN CHECK D712 ANODE (-157V)? YES CHECK G1 VOLTAGE? (-55 ~ -15V) YES CHECK CDT HEAT VOLTAGE? (6.3V) YES TROUBLE IN CDT 3. NO RASTER ORANGE NO NO NO - 15 - DPM MODE (NO H and/or V SYNC) TROUBLE IN D712 TROUBLE IN Q799 TROUBLE IN D941, Q942, Q941 - LG E700S | Service Manual - Page 16
(ONE VERTICAL LINE) CHECK Q706? YES CHECK B+ VOLTAGE (50V)? YES CHECK T701(FBT) PIN 2 (31KHZ, 60V 69KHZ, 140V ? YES CHECK Q701 COLLECTOR WAVEFORM? 0V T YES TROUBLE IN T701, P701 NO TROUBLE IN Q706 NO TROUBLE IN 50V LINE NO TROUBLE IN Q719, Q720, D710 NO - LG E700S | Service Manual - Page 17
LINEARITY UNBALANCED OF H-LIN. CHECK IC401 PIN 5, 6, 7 ? YES CHECK Q711~Q716? YES CHECK L703? YES TROUBLE IN C722, C723, C726, C729 NO TROUBLE IN IC401 (MICOM) NO TROUBLE IN Q711 ~ Q716 NO TROUBLE IN L703 Cs SIGNAL TABLE HORIZONTAL FREQUENCY(fH) Cs1 30K ~ 33.9K L 34K ~ 38.9K L 39K - LG E700S | Service Manual - Page 18
DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK IC601 PIN 3 (15V)? YES CHECK IC601 PIN 7 (40V)? YES NO TROUBLE IN R603 15V LINE TROUBLE IN NO HIGH-VOLTAGE OUT CIRCUIT(FBT), D721, R606 CHECK NO TROUBLE IN IC701 PIN 12, 13? IC701 3V YES TROUBLE IN IC601, V-CIRCUIT - 18 - - LG E700S | Service Manual - Page 19
5, 10 NO WAVEFORM? Pin 10 Pin 5 5V YES CHECK IC301 PIN 12 NO WAVEFORM ? H+V 5V YES CHECK NO IC301 PIN 13, 14, 15 ? H+V 5V YES TROUBLE IN OSD PERIPHERAL CIRCUIT TROUBLE IN 5V LINE TROUBLE IN IC601 PIN8 (V-FBP), T701 40V LINE (H-FBP - LG E700S | Service Manual - Page 20
(DPMF: 0V) CHECK B+ LINE NO (6.3V,15V, 80V) ? CHECK PC, (PC IS NOT GOING INTO DPM OFF MODE) TROUBLE IN X401 TROUBLE IN IC401 (MICOM) TROUBLE IN Q941, Q942, Q951, Q952 YES TROUBLE IN PC Mode Item NORMAL STAND-BY SUSPEND OFF DPM TABLE DPMF H H H L DPMS H L L L LED GREEN AMBER AMBER AMBER - LG E700S | Service Manual - Page 21
THE OSD MENU MUST BE PRESSED.) CHECK IC401 PIN 19 (0V)? YES CHECK Q953 COLLECTOR VOLTAGE? DC 15V YES CHECK P902 ? YES CHECK RL901? YES TROUBLE IN TH901, DEGAUSSING COIL NO NO NO NO TROUBLE IN IC401 (MICOM) TROUBLE IN Q953 TROUBLE IN P902 TROUBLE IN RL901 - 21 - - LG E700S | Service Manual - Page 22
10. NO TILT (NO ROTATION ) NO TILT (NO ROTATION) CHECK IC401 PIN 21 NO WAVE FORM ? YES CHECK 15V LINE NO AND 6.3V LINE ? YES CHECK NO Q503 EMITTER VOLTAGE ? YES TROUBLE IN P501, TILT COIL, D501 TROUBLE IN IC401 (MICOM) TROUBLE IN 15V LINE, 6.3V LINE TROUBLE IN Q501~Q503 - 22 - - LG E700S | Service Manual - Page 23
EXPLODED VIEW 3 5 - 23 - 10 6 7 2 13 8 B A 9 11 12 14 15 1 MENU SELECT 13 12 4 - LG E700S | Service Manual - Page 24
FLATRON E700S (EB770G-NA) 2423GC4E95A CDT(CIRC), M41QEE903X 01NLGD FOR NORTHERN HEMISPHERE (EB770G-EA), (EB770G-NA ; ) 2 2423GC4E96A CDT(CIRE), M41QEE903X 01RLGD LG HOLDER, PCB FIX , PC+ABS 13 4810TKK171B BRACKET, EB770F SUPPORTER CDT 14 6634TFZ002A ADAPTER, SIGNAL, LIBERTY ENHANCE MAC 6-DIP ( - LG E700S | Service Manual - Page 25
REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE : S SAFETY Mark AL ALTERNATIVE PARTS MODEL: (EB770G-EA), (EB770G-NA) *S *AL LOC. NO. PART NO. CAPACITORS DATE: 2002. 1. 10. DESCRIPTION / SPECIFICATION C201 C301 - LG E700S | Service Manual - Page 26
MODEL: (EB770G-EA), (EB770G-NA) DATE: 2002. 1. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C740 C741 C742 C743 C744 C745 C746 C747 C748 C749 C750 C751 C752 C754 C755 C767 C771 C773 C774 C775 C781 C801 C802 C805 C810 C901 C902 C903 C904 C905 C906 C908 C909 C910 C911 C912 C913 C941 - LG E700S | Service Manual - Page 27
MODEL: (EB770G-EA), (EB770G-NA) DATE: 2002. 1. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION ZD301 ZD302 ZD401 ZD404 ZD405 ZD406 ZD407 ZD410 ZD411 ZD701 ZD702 ZD705 ZD901 ZD902 0DZ560009AG 0DZ560009AG 0DZ560009AG 0DZ560009AG 0DZ560009AG 0DZ560009AG 0DZ560009AG 0DZ560009AG 0DZ560009AG - LG E700S | Service Manual - Page 28
MODEL: (EB770G-EA), (EB770G-NA) DATE: 2002. 1. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R314 R315 R316 R317 R318 R319 R320 R321 R322 R323 R324 R327 R328 R329 R330 R331 R332 R333 R334 R335 R336 R337 R340 R341 R342 R343 R344 R345 R346 R347 R348 R388 R389 R390 R401 R402 R403 R404 - LG E700S | Service Manual - Page 29
LGEC NON 12 20 HORI SKHV10911A LGEC NON 12 20 HORI SKHV10911A LGEC NON 12 20 HORI SKHV10911A LGEC NON 12 20 HORI "1054A,CB777G LG-PHILIPS 17""" EE2218 2.3 MH D/FOCUS(CB775C), EI2218 4.0MH H-DRIVE,EB770G EER3541 150UH V-16PIN EB770G S MZ72-9RM290V GAOLI 9OHM 20% 2P SCK-084 THINKING 8 ohm 15 - LG E700S | Service Manual - Page 30
PIN CONFIGURATION S3P863A P0.0/INT0 1 P0.1/INT1 2 P0.2/INT2 3 P0.3 4 P0.4/TM0CAP 5 P0.5 6 P0.6 7 P0.7 8 P1.0/SDA1 9 P1.1/SCL1 10 VDD1 11 VSS1 12 XOUT 13 XIN 14 TEST (GND) 15 SDA0 16 SCL0 17 RESET 18 P1.2 19 P2.0/PWM0 20 P2.1/PWM1 21 S3C8639 /C863A (42-SDIP) 42 P3.7 41 P3 - LG E700S | Service Manual - Page 31
LM1269 110 MHz I2C RGB Video Amplifier System with OSD & DACs 24 13 1 12 Block and Connection Diagram R OSD 1 G OSD 2 B OSD 3 OSD Select 4 R Video 5 G Video 6 B Video 7 Analog GND 8 Vcc 9 VREFREXT 10 SDA 11 SCL 12 R Analog/ Digital R To Other Video Channels OSD Contrast Clamp - LG E700S | Service Manual - Page 32
TDA4866J Pin Configuration PIN SYMBOL 1 INA 2 INB 3 VP 4 OUTB 5 GND 6 OUTA 7 VFB 8 GUARD 9 FEEDB LM2469 Monolothic Triple 9nS high Gain CRT Driver STR-G8644D Connection Diagram 9 1 9 VIN 1 8 7 6 5 4 3 VBB VIN 2 VIN 3 GND VCC VOUT 3 2 VOUT2 1 VOUT1 - 32 - Block Diagram Vin 4 1D START - LG E700S | Service Manual - Page 33
/Protection/V-Blanking Output 2 XRAY 3 BOP 4 BSENS 5 BIN 6 BDRV X-ray Protection Input B+ Control OTA Output B+ Control Comparator Input B+ Control OTA Input B+ Control Driver Output 18 SCL 19 SDA 20 i.c 21 VSMOD 22 VAGC I2C-Bus Clock Input I2C-Bus Data Input Internally connected; nite 1 Input - LG E700S | Service Manual - Page 34
BLOCK DIAGRAM FOR TDA4853/4857 - 34 - VSYNC 14 (TTL level) VERTICAL SYNC INPUT AND POLARITY CORRECTION 22 kΩ (1%) 100 nF (5%) EHT compensation via vertical size 150 EHT compensation nF via horizontal size VREF VCAP VAGC 23 24 22 VSMOD HSMOD 21 31 EWDRV 11 VERTICAL SYNC INTEGRATOR - LG E700S | Service Manual - Page 35
TYPE EB C B CE E CB PARTS 2N3904 KTD1413 KTA1270 KTC200-Y KTC3198 KTC3202 KSC5803 TYPE E CB G S D 12 3 1: GND 2: OUT 3: IN PARTS KTA1275 KTC3206 IRFS630A DTC114E KSD882Y 1 23 1: BASE 2: COLLECTOR 3: EMITTER KSP44 123 1: EMITTER 2: BASE 3: COLLECTOR 12 3 1: EMITTER 2: COLLECTOR 3: BASE - LG E700S | Service Manual - Page 36
IIC-SDA IIC-SCL DDC-SDA DDC-SCL - LG E700S | Service Manual - Page 37
1. CONTROL BOARD (Component Side) PRINTED CIRCUIT BOARD 2. CONTROL BOARD (Solder Side) 3. MAIN BOARD (Component Side) 4. MAIN BOARD (Solder Side) - 38 - - 39 - - LG E700S | Service Manual - Page 38
P/NO : 3828TSL078A Jan. 2002 Printed in Korea
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COLOR MONITOR
SERVICE MANUAL
Website:http://biz.LGservice.com
CAUTION
BEFORE SERVICING THE UNIT,
READ THE
SAFETY PRECAUTIONS
IN THIS MANUAL.
MENU
SELECT
MODEL:
StudioWorks E700B
(EB770G-EA)
StudioWorks E700S
(EB770G-NA)
E700S
(EB770G-NA)
E700S
(EB770G-NA)
CHASSIS NO. : CA-109
FACTORY MODEL: EB770G
*(
) ID LABEL Model No.