IBM E50 LG CB553H COLOR MONITOR OWNER'S MANUAL
Summary
This comprehensive service manual provides professional documentation for maintaining and repairing the IBM E50 Color Monitor. It covers intricate details including detailed schematic diagrams, wiring guides, block diagrams, and technical specifications. Essential safety precautions regarding high voltage and X-radiation are thoroughly addressed. This guide is mandatory reading for trained electronics technicians, repair specialists, and engineers needing accurate troubleshooting steps and replacement part knowledge to service this model safely and effectively.
Page 1 Text Content
IBM E50 LG CB553H
COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-120
CAUTION BEFORE SERVICING THE UNIT,
MENU SELECT
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Page Summary Contents For IBM E50 LG CB553H COLOR MONITOR OWNER'S MANUAL
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IBM E50 LG CB553H COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-120 CAUTION BEFORE SERVICING THE UNIT, MENU SELECT READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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CONTENTS SPECIFICATIONS ................................................... ADJUSTMENT ........................................................ SAFETY PRECAUTIONS ........................................
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SAFETY PRECAUTIONS SAFETY-RELATED COMPONENT WARNING! X-RADIATION There are special components used in this color monitor The only potential source of X-radiation is the picture tube. which are importa...
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TIMING CHART VIDEO Dot Clock (MHz), Horizontal Frequency (k Hz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> H/V Sync Total Period Video Active Blanking Time Sync Du...
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OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW ID Label MENU SELECT Power ON/OFF Button See Front Control Panel AC Power Socket Signal Connector Front Control Panel MENU SELECT 1. Power ON/OFF Button 4. ...
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IR IN IA ocket ignal able
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ocus 105V <OSD DISPLAY> Heater ( 6.3V ) Signal H-Sync Sig CONTRAST Cable BRIGHTNESS V-Sync Sig VIDEO VIDEO DY CDT H / V POSITION PRE-AMP MAIN AMP I2C DATA(SDA) H / V SIZE (IC302) (IC303) UP/BOTT...
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DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit 7. D/D(DC to DC) Converter This is used for suppressing noise of power input line This circuit supplies DC voltage to the horizonta...
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ADJUSTMENT GENERAL INFORMATION 7) Adjust parallelogram as arrow keys to be the best condition. All adjustment are thoroughly checked and corrected 8) Adjust balance of pin-balance as arrow keys to be ...
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17-1) Adjust R-DRIVE and B-DRIVE command to white 5. Input EDID Data. balance x=0.283±0.003 and y=0.298±0.003 on the 1) Display color 15,0 cross hatch pattern at Mode 6. 2) EEPROM → Write EDID command...
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TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK NO TROUBLE IN FUSE FUSE OK? CHECK C908 VOLTAGE? (AC120V: 160VDC, TROUBLE IN D900 AC220V: 304VDC) CHECK IC901 PIN 6 WAVEFORM TROUB...
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2. NO CHARACTER NO CHARACTER CHECK NO TROUBLE IN IC302 P302 5V LINE PIN 7 (5V) ? TROUBLE IN CHECK PC SIGNAL, IC302 PIN 1, 3, 5 ? P301 SIGNAL CABLE CHECK NO TROUBLE IN IC302 PIN 14, 16, 18 ? IC302 CHEC...
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3. NO RASTER NO VIDEO (POWER INDICATOR ON) CHECK ORANGE DPM MODE POWER INDICATOR GREEN or ORANGE? (NO H and/or V SYNC) GREEN CHECK TROUBLE IN D712 ANODE CHECK TROUBLE IN G1 VOLTAGE? CHECK NO TROUBLE I...
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4. NO HORIZONTAL DEFLECTION NO H-DEFLECTION (ONE VERTICAL LINE) CHECK NO TROUBLE IN CHECK TROUBLE IN B+ VOLTAGE 50V LINE CHECK T701(FBT) PIN 2 NO TROUBLE IN (31KHZ, 65V 54KHZ, 120V ? CHECK NO TROUBLE ...
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5. TROUBLE IN H-LINEARITY UNBALANCED OF H-LIN. CHECK NO TROUBLE IN IC401 PIN 5, 6? IC401 (MICOM) CHECK NO TROUBLE IN CHECK NO TROUBLE IN L703? L703 Cs SIGNAL TABLE TROUBLE IN HORIZONTAL C722, C726, C7...
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6. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 PIN 2 13V LINE CHECK NO TROUBLE IN IC601 PIN 4 -10V LINE CHECK NO TROUBLE IN IC701 PIN 5, 23? IC701 TROUBLE IN IC...
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7. TROUBLE IN OSD NO OSD (ENTER BUTTON MUST BE PRESSED.) CHECK NO TROUBLE IN IC301 B+ 5V LINE DC 5V CHECK TROUBLE IN IC301 PIN 5, 10 IC601 PIN8 (V-FBP), WAVEFORM? T701 40V LINE (H-FBP) Pin 10 Pin 5 YE...
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8. TROUBLE IN DPM OFF MODE FAILURE (NO OFF MODE.) CHECK CHECK PC, IC401 (MICOM) INPUT H/V SYNC SIGNAL (PC IS NOT GOING INTO PIN 30, 31 (H/V INPUT) DPM OFF MODE) SIGNAL? NO H/V SYNC CHECK NO TROUBLE IN...
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9. NO DEGAUSSING NO DEGAUSSING (DEGAUSS ON THE OSD MENU MUST BE PRESSED.) CHECK NO TROUBLE IN IC401 PIN 1 IC401 (MICOM) CHECK NO TROUBLE IN Q953 COLLECTOR VOLTAGE? DC 13V CHECK NO TROUBLE IN P902 ? P9...
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10. NO TILT (NO ROTATION) NO TILT (NO ROTATION) CHECK NO TROUBLE IN IC401 PIN 21 IC401 (MICOM) WAVE FORM ? CHECK NO TROUBLE IN 15V LINE AND 6.3V LINE ? 15V LINE, 6.3V LINE CHECK NO TROUBLE IN Q503 EMI...
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EXPLODED VIEW SELECT
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EXPLODED VIEW PARTS LIST Ref. No. Part No. Description 3091TKB048E CABINET ASSEMBLY, CB553H BRAND B031 IBM E50 9930 320T SP LOCAL 6318G15001A CDT(CIRC), M36QAW351X 122 SAMSUNG 61KHZ 29.1MM FST MPR or ...
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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 DATE: 2003. 03. 28. DATE: 20...
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DATE: 2003. 03. 28. DATE: 2003. 03. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C915 0CK6810K515 680P 50V K B TS D905 0DRGF00109A GUF1...
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DATE: 2003. 03. 28. DATE: 2003. 03. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L903 6200J00003A RH3.5*5.0 BOSUNG TP R344 0RD1000Q609 ...
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DATE: 2003. 03. 28. DATE: 2003. 03. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R708 0RD1102Q609 11K 1/4W(3 5% TA52 R809 0RX0101K665 1...
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PIN CONFIGURATION S1D2519X01 DEFLECTION PROCESSOR FOR MULTISYNC MONITORS BLOCK DIAGRAM
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STV9211 Pin Configuration Pin Description
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SCHEMATIC DIAGRAM NOTICE Since this is a basic schematic diagram. The value of components and some partial connection are
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PRINTED CIRCUIT BOARD 1. MAIN BOARD (Component Side) 2. MAIN BOARD (Solder Side)
Manual Details
| Brand | IBM |
|---|---|
| Pages | 31 |
| File Size | 3.15 MB |
| Published | May 23, 2026 |
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Frequently Asked Questions
What is the recommended operating temperature range?
The device's operating temperature range is 0°C to 40°C.
What input voltage level is required for a Non-Interlace Color signal?
The Non-Interlace Voltage Level must be between 0 ~ 0.7 Vp-p.
How should I prevent X-radiation hazards during service?
Use the specified picture tube and ensure an isolation transformer is inserted before servicing the chassis.
What are the maximum dimensions with Tilt/Swivel?
Dimensions include a scanning frequency width of 356.0 mm, horizontal depth of 395.0 mm, vertical height of 371.0 mm.