IBM E50 LG CB553H Service Manual Download Page 11 | Manualshive

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TROUBLESHOOTING GUIDE

NO POWER

(POWER INDICATOR OFF)

TROUBLE IN D900

TROUBLE IN FUSE
(F901)

TROUBLE IN
IC901

TROUBLE IN

D941, D942, D951,
D961, D971

TROUBLE IN

Q903, Q952, Q951,

Q942, Q941, Q706

CHECK

FUSE OK?

(F901)

CHECK

C908 VOLTAGE?

(AC120V: 160VDC,

AC220V: 304VDC)

NO

YES

YES

YES

YES

NO

NO

NO

CHECK

IC901 PIN 6

WAVEFORM

(SQUARE WAVE

COMES OUT?)

CHECK

D941, D951,

D961, D942, D971

VOLTAGE?

1. NO POWER

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Summary of Contents for E50 LG CB553H

Page 1: ...COLOR MONITOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL IBM E50 LG CB553H MENU SELECT CHASSIS NO CA 120 ...

Page 2: ...5 x 215 mm 11 22 x8 46 Max Image Size 270 x 200 mm 10 63 x 7 87 Preset Image Size 4 2 Display Color Full Colors 4 3 Display Resolution 1024 x 768 60Hz Non Interlace 4 4 Video Bandwidth 65 MHz 5 ENVIRONMENT 5 1 Operating Temperature 0 C 40 C Ambient 5 2 Relative Humidity 10 80 Non condensing 5 3 Altitude 3 000 m 6 DIMENSIONS with TILT SWIVEL Width 356 0 mm 14 01 Depth 395 0 mm 15 55 Height 371 0 mm...

Page 3: ...sign Soldering must be inspected for the cold solder joints frayed leads damaged insulation solder splashes or the sharp points Be sure to remove all foreign materials 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 Use only same type display tubes X RADIATION The only ...

Page 4: ...1 556 V 85 01 11 763 11 093 0 670 0 069 0 578 0 023 H 31 47 31 782 25 422 6 36 3 813 1 907 0 636 V 70 08 14 27 13 158 1 112 0 064 0 858 0 191 H 46 88 21 33 16 16 5 17 1 62 3 23 0 32 V 75 01 13 331 12 798 0 533 0 064 0 448 0 021 H 60 02 16 66 13 00 3 66 1 22 2 24 0 20 V 75 03 13 328 12 795 0 533 0 050 0 466 0 017 Mode H V Sort 1 2 3 4 5 6 640x480 60Hz 640x480 85Hz 720x400 70Hz 800x600 75Hz 1024x768...

Page 5: ...ndicator lights up green when the monitor operates normally in DPMS Energy Saving mode stand by suspend or power off mode its color changes to orange and if abnormal or damaging circuit turns out orange blink 3 SELECT Button Use this button to enter a selection in the on screen display 4 SET Button Use these buttons to choose or adjust items in the on screen display 5 MENU Button Use this button t...

Page 6: ...P301 P302 P305 P702 P701 P402 P902 S S Signal Cable AC Socket FBT ...

Page 7: ...1 H Sync Sig V Sync Sig I2C DATA SDA I2C CLOCK SCL VIDEO PRE AMP IC302 Signal Cable R G B VIDEO MAIN AMP IC303 5V 5V H V Sync Processor IC701 V OUT IC601 STV9302 H OUT Q706 H Linearity Correction DC DC Converter X RAY Protection Circuit FBT T701 Auto Beam Limit Vertical Blanking Brightness Control 160V 40V 13V D D Feed Back 5V Regulator 12V Regulator 12V MICOM IC401 SCL SDA H V Sync PWM Control 12...

Page 8: ...ondition by each OSD function the data of the adjusted condition is stored in EEPROM IC402 6 Horizontal and Vertical Oscillation This circuit generates the horizontal pulse and the vertical pulse by takijg the H and V sync signal This circuit consists of the H V processor IC701 and the associate circuit 7 D D DC to DC Converter This circuit supplies DC voltage to the horizontal deflection output c...

Page 9: ...r button of the monitor turn off turn on 5 COMMAND PRESET START Y Yes command 6 DIST ADJ BALANCE command 7 Adjust parallelogram as arrow keys to be the best condition 8 Adjust balance of pin balance as arrow keys to be the best condition 9 DIST ADJ FOS ADJ command 10 Adjust V SIZE as arrow keys to 200 2mm 11 Adjust V POSITION as arrow keys to center of the screen 12 Adjust H SIZE as arrow keys to ...

Page 10: ...ABL command 22 Adjust ABL to 32 1FL of the luminance 23 After push the ENTER key and COMMAND PRESET EXIT Y Yes command 24 Exit from the program 5 Input EDID Data 1 Display color 15 0 cross hatch pattern at Mode 6 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 Bright...

Page 11: ...901 TROUBLE IN IC901 TROUBLE IN D941 D942 D951 D961 D971 TROUBLE IN Q903 Q952 Q951 Q942 Q941 Q706 CHECK FUSE OK F901 CHECK C908 VOLTAGE AC120V 160VDC AC220V 304VDC NO YES YES YES YES NO NO NO CHECK IC901 PIN 6 WAVEFORM SQUARE WAVE COMES OUT CHECK D941 D951 D961 D942 D971 VOLTAGE 1 NO POWER ...

Page 12: ...3 PIN 9 10 11 CHECK IC303 PIN 7 105V PIN 3 12V TROUBLE IN P302 5V LINE TROUBLE IN PC SIGNAL P301 SIGNAL CABLE TROUBLE IN IC302 TROUBLE IN P303 12V LINE 105V LINE TROUBLE IN IC303 NO YES NO NO YES YES YES YES NO NO CHECK R G B CATHODE VOLTAGE TROUBLE IN R341 R343 L301 L303 D307 D312 TROUBLE IN CRT SOCKET YES NO ...

Page 13: ...INDICATOR GREEN or ORANGE CHECK D712 ANODE 157V CHECK G1 VOLTAGE 75 15V TROUBLE IN D712 TROUBLE IN Q799 DPM MODE NO H and or V SYNC ORANGE NO GREEN YES NO 3 NO RASTER CHECK CDT HEAT VOLTAGE 6 3V TROUBLE IN D941 Q942 Q941 YES NO TROUBLE IN CDT YES ...

Page 14: ...E VERTICAL LINE CHECK Q706 CHECK B VOLTAGE 50V CHECK T701 FBT PIN 2 31KHZ 65V 54KHZ 120V CHECK Q701 COLLECTOR WAVEFORM TROUBLE IN Q706 TROUBLE IN 50V LINE TROUBLE IN Q719 Q720 D710 TROUBLE IN Q701 TROUBLE IN T701 P701 NO NO YES YES YES YES NO NO 0V T ...

Page 15: ...HECK L703 TROUBLE IN IC401 MICOM TROUBLE IN Q712 Q713 Q715 Q716 TROUBLE IN L703 TROUBLE IN C722 C726 C729 NO NO NO YES YES YES Cs SIGNAL TABLE HORIZONTAL FREQUENCY fH 30K 33 9K 34K 38 9K 39K 43 9K 44K 48 9K 49K 51 9K 52K 54K Cs0 255 155 130 100 85 85 Cs1 L L H H H H Cs2 L H L L H H Cs3 L L H H H H ...

Page 16: ...DEFLECTION NO V DEFLECTION ONE HORIZONTAL LINE CHECK IC601 PIN 2 13V CHECK IC601 PIN 4 10V CHECK IC701 PIN 5 23 TROUBLE IN 13V LINE TROUBLE IN 10V LINE TROUBLE IN IC701 TROUBLE IN IC601 V CIRCUIT NO NO YES YES YES NO 3V ...

Page 17: ...PIN8 V FBP T701 40V LINE H FBP TROUBLE IN IC302 IC301 TROUBLE IN IC301 IC302 NO YES DC 5V YES YES YES NO NO NO Pin 5 5V Pin 10 5V H V 5V H V CHECK IC301 B CHECK IC301 PIN 12 WAVEFORM ENTER BUTTON MUST BE PRESSED 7 TROUBLE IN OSD CHECK IC301 PIN 5 10 WAVEFORM CHECK IC301 PIN 13 14 15 ...

Page 18: ...NOT GOING INTO DPM OFF MODE TROUBLE IN X401 TROUBLE IN IC401 MICOM TROUBLE IN Q941 Q942 Q951 Q952 TROUBLE IN PC OFF MODE FAILURE INPUT H V SYNC SIGNAL NO H V SYNC NO OFF MODE NO NO NO DPMF 0V DPM TABLE Mode Item NORMAL STAND BY SUSPEND OFF DPMF H L L L LED GREEN ORANGE ORANGE ORANGE DPMS H H H L YES SEE DPM TABLE YES YES 8 TROUBLE IN DPM 5V 6MHz ...

Page 19: ...TOR VOLTAGE CHECK P902 CHECK RL901 TROUBLE IN IC401 MICOM TROUBLE IN Q953 TROUBLE IN P902 TROUBLE IN RL901 TROUBLE IN TH901 DEGAUSSING COIL NO DEGAUSSING DC 13V NO NO NO NO YES YES YES YES DEGAUSS ON THE OSD MENU MUST BE PRESSED 9 NO DEGAUSSING ...

Page 20: ...O TILT NO ROTATION TROUBLE IN IC401 MICOM TROUBLE IN 15V LINE 6 3V LINE TROUBLE IN Q501 Q503 TROUBLE IN P501 TILT COIL D501 NO YES YES YES CHECK 15V LINE AND 6 3V LINE CHECK Q503 EMITTER VOLTAGE NO NO CHECK IC401 PIN 21 WAVE FORM ...

Page 21: ...EXPLODED VIEW 21 10 A M ENU SELECT 12 1 4 12 12 13 3 2 6 5 8 B 7 9 11 2 11 1 a b c b 14 14 ...

Page 22: ... TILT SWIVEL ASSEMBLY CB563 B046 T051 IBM E52 9930 320T SCREW ASSY PHP 5 30BP FZMY GW18 COIL DEGAUSSING 75D 437 KWANGSUNG CB563G NT FBT FLY BACK TRANSFORMER FMMTC81 AM1035G LIM SANG IL SOCKET CIRC POWER BAE EUN AC UNIVERSAL 3PIN BLACK SOCKET CIRC POWER CDJ 3C DUOLING AC UNIVERSAL 3PIN BLACK CABLE D SUB UL20276 9C 5 8MM AT 1560MM BLACK 9930 TC170H DM METAL SHIELD BOTTOM A CKD CB553 CB563 BRACKET CB...

Page 23: ...8 0CE227CH638 220UF SHL SD 25V M FM5 TP 5 C709 0CE105CK638 1UF SHL SD 50V 20 FM5 TP 5 C710 181 288Q MKT 100V 154JTR PHS26154 C711 181 288M MKT 63V 105KTR PHS15105 C712 0CK1040K945 0 1UF 50V Z F TR C713 0CK2210K515 220P 50V K B TS C714 0CE107CF638 100UF SHL SD 16V M FM5 TP 5 C715 0CQ1031N419 0 01U 100V J POLY NI TP C717 0CE476CF638 47UF SHL SD 16V M FM5 TP 5 C719 0CZZTAB001F SHL BP SYE SWE 50V 3 3U...

Page 24: ...0DRGF00090A GBL06 GULF BK GBL 600V 4A 12 D902 971 0016 TIN HDC 0 60H D904 0DR100009CD RGP10G 1021 TIWAN SEMI TP DO DATE 2003 03 28 S AL LOC NO PART NO DESCRIPTION SPECIFICATION D905 0DRGF00109A GUF10M GULF TP DO41 1000V 1A D906 0DR100009CD RGP10G 1021 TIWAN SEMI TP DO D908 0DS141489AB 1N4148 TP GRANDE DO 34 500MW D910 0DS141489AB 1N4148 TP GRANDE DO 34 500MW D911 0DS141489AB 1N4148 TP GRANDE DO 34...

Page 25: ...609 150 1 4W 3 5 TA52 R343 0RD1500Q609 150 1 4W 3 5 TA52 DATE 2003 03 28 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R344 0RD1000Q609 100 1 4W 3 5 TA52 R351 0RD2200A609 220 OHM 1 2 W 7 0 5 TA52 R352 0RD2200A609 220 OHM 1 2 W 7 0 5 TA52 R353 0RD2200A609 220 OHM 1 2 W 7 0 5 TA52 R354 0RD0392A609 39 OHM 1 2 W 7 0 5 TA52 R382 0RD1000Q609 100 1 4W 3 5 TA52 R383 0RD1000Q609 100 1 4W 3 5 TA52 R401 0RD1...

Page 26: ...R802 0RD1502Q609 15K 1 4W 3 5 TA52 R803 0RD2001Q609 2K 1 4W 3 5 TA52 R808 971 0016 TIN HDC 0 60H DATE 2003 03 28 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R809 0RX0101K665 1 OHM 2 W 5 SF R813 0RD6802Q609 68K 1 4W 3 5 TA52 R814 0RD1202Q609 12K 1 4W 3 5 TA52 R816 0RN3301F409 3 30K 1 6W 1 TA52 R818 0RN6202F409 62KOHM 1 6 W 1 TA52 R901 0RD4703A609 470K OHM 1 2 W 7 0 5 TA52 R902 0RD0511Q609 5 1 OHM...

Page 27: ...PIN CONFIGURATION S1D2519X01 DEFLECTION PROCESSOR FOR MULTISYNC MONITORS BLOCK DIAGRAM ...

Page 28: ...STV9211 Pin Configuration Pin Description ...

Page 29: ...BLOCK DIAGRAM STV9211 ...

Page 30: ... 31 ATIC DIAGRAM ...

Page 31: ... 33 PRINTED CIRCUIT BOARD 2 MAIN BOARD Solder Side ...

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