Micron Electronics CPD-2401 Service Manual
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Micron Electronics CPD-2401 Service Manual

D99 chassis
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SERVICE MANUAL

Picture tube
0.24-0.25 mm aperture grill pitch
17 inches measured diagonally
90-degree deflection
Video image area
(16" maximum viewing image)
Approx. 326 X 243 mm (w/h)
(12
Resolution
Horizontal: Max. 1280 dots
Vertical: Max. 1024 lines
Standard image area
Approx. 312 x 234 mm (w/h)
(12
Input signal
Video
Analog RGB (75 ohms typical)
0.7 Vp-p,
Sync
Separate HD/VD,
TTL Polarity Free
External Composite,
TTL Polarity Free (2K ohms impedance)
SPECIFICATIONS
7/8
5/8
x 9
inches)
1/4
x 9
1/4
inches)
±
5%, Positive
Canadian Model
D99
Power Consumption
Deflection frequency
AC input voltage / current
Dimensions
Mass
Design and specifications are subject to change without notice.

COLOR MONITOR

CPD-2401
CPD-2401
US Model
Chassis No. L29N-A
CHASSIS
Maximum 120W
Minimum 95W
Horizontal: 30 to 85 KHz
Vertical: 48 to 120 Hz
100 to 120 V, 50/60 Hz, 1.7A
220 to 240V, 50/60Hz, 0.9A
404 x 414 x 420mm (w/h/d)
15/16
3/8
1/2
(15
x 16
x 16
inches)
Approx. 18.8 kg (41 lbs. 7 oz.)

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Summary of Contents for Micron Electronics CPD-2401

  • Page 1: Service Manual

    CPD-2401 SERVICE MANUAL CPD-2401 US Model Canadian Model Chassis No. L29N-A CHASSIS SPECIFICATIONS Picture tube 0.24-0.25 mm aperture grill pitch Power Consumption Maximum 120W 17 inches measured diagonally Minimum 95W 90-degree deflection Deflection frequency Horizontal: 30 to 85 KHz Video image area (16"...

  • Page 2: Power Management

    CPD-2401 POWER MANAGEMENT The power saving mode complies with the VESA Display Power Management Signaling standard. Each state of power management shall be activated by the host computer terminating the appropriate sync signals. Blanking the video must precede termination of the sync signals. The elapsed time counter shall also be controlled by the host computer.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Section Title Page Safety Check Out Instructions ............... 4 1. GENERAL .................. 5 2. DISASSEMBLY 2-1. Cabinet Removal ............9 2-2. Service Position .............. 9 2-3. A and D Board Removal ..........9 2-4. Picture Tube Removal ..........10 3.

  • Page 4: Safety Check Out Instructions

    CPD-2401 SAFETY CHECK-OUT After correcting the original service problem, perform the Leakage Test following safety checks before releasing the set to the The AC leakage from any exposed metal part to earth ground customer: and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500...

  • Page 5: General

    SECTION 1 GENERAL The following are partial abstracts from the Operating Instruction Manual. The page numbers shown reflect those of the Operating Instruction Manual. Getting Started Getting Started Customizing Your Monitor Setup Use of the Tilt/Swivel Adjusting the Picture Brightness and Contrast This monitor can be adjusted within the angles shown below.
  • Page 6 Customizing Your Monitor Customizing Your Monitor The OSD (On-screen Display) System Select Adjusting the Settings rotate the picture ROTATION 1 Adjusting the size and centering 3 If necessary, use the BRIGHTNESS buttons to select a specific expand or contract the picture sides PINCUSHION Introducing the OSD System item.

  • Page 7: Changing The Osd Language

    Customizing Your Monitor Customizing Your Monitor 4 Adjusting the quality of the 7 Using the HELP OSD Degaussing the monitor Resetting the adjustments The monitor is automatically degaussed (demagnetized) when the picture (CONVERGENCE) power is turned on. Press the MENU button. To manually degauss the monitor, first press the The CONVERGENCE settings allow you to adjust the quality of The main MENU appears on the screen.

  • Page 8: Warning Messages

    Additional Information Additional Information Warning Messages Symptom Check these items Picture is fuzzy • Adjust the brightness and contrast (page 5). • Degauss the monitor* (page 8). If there is something wrong with the input signal, one of the following messages appears. •...

  • Page 9: Disassembly

    CPD-2401 SECTION 2 DISASSEMBLY 2-1. CABINET REMOVAL 2-2. SERVICE POSITION Two claws PUSH Cabinet A board PUSH D board 1 When the D-board is Two screws placed in service (BVTP 4 x 16) position, the Safety Earth Wire (green and yellow wire) is disconnected.

  • Page 10: Picture Tube Removal

    CPD-2401 2-4. PICTURE TUBE REMOVAL Demagnetization coil WARNING: BEFORE REMOVING Two screws THE ANODE CAP (BVTP 4 x 16) High voltage remains in the CRT even Tension spring after the power is disconnected. To avoid electric shock, discharge CRT A board before attempting to remove the anode cap.

  • Page 11: Safety Related Adjustments

    SECTION 3 SAFETY RELATED ADJUSTMENTS 7) Verify the High Voltage as shown above (27 KV ± 0.2 When replacing parts shown in the table below, the following operational checks must be performed as a KV) is within specification. If not, set H. SIZE data at minimum (-127) and then adjust RV501 on "D"...

  • Page 12: Adjustments

    CPD-2401 SECTION 4 ADJUSTMENTS Connect the communication cable of the connector located on the D board on the monitor. Run the service software and then follow the instructions. 1-690-391-21 A-1500-819-A 3-702-691-01 Interface Unit Connector Attachment IBM AT Computer To BUS CONNECTOR...
  • Page 13 CPD-2401 4. Display crosshatch pattern with red and blue lines and TLV movement black field. 5. Adjust H.STAT and V.STAT with 4 pole magnet. Use 4 pole magnet, not "HSTAT" and "VSTAT". 4 Pole Magnet 15. If necessary, repeat steps 3-14 to make the optimum condition for the entire screen.
  • Page 14 CPD-2401 Vertical Convergence 4-7. Digital Convergence Adjustment Convergence (Low) Mode V STAT-T-HI CCV-T-L-HI CCV-T-R-HI 1. Adjust the H.STAT and V.STAT with "HSTAT" and "VSTAT". MCV-T-L-HI MCV-T-R-HI A. Horizontal Convergence XBV-R-HI XBV-L-HI VSTAT-HI YBH-T-LO MCV-B-L-HI MCV-B-R-HI CBH-T-L-LO CBH-T-R-LO CCV-B-L-HI CCV-B-R-HI MBH-T-R-LO...

  • Page 15: Diagrams

    CPD-2401 SECTION 5 DIAGRAMS 5-1. BLOCK DIAGRAM 5-2. CIRCUIT BOARDS LOCATION 5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS Note: • All capacitors are in µF unless otherwise noted. pF: µµF • When replacing parts shown in the table below, 50 WV or less are not indicated except for electrolytic.

  • Page 16: A Board Schematic Diagram

    A BOARD SCHEMATIC DIAGRAM NOTE: Portions of this circuit marked as shown are high voltage areas. Use care to prevent electric shocks during inspection or repair. A BOARD WAVEFORMS 1.1 Vp-p (H) 1.1 Vp-p (H) 1.2 Vp-p (H) 4.7 Vp-p (H) 4.2 Vp-p (H) 4.9 Vp-p (H) A BOARD LOCATOR LIST...
  • Page 17 D BOARD WAVEFORMS 4.7 Vp-p (H) 3.5 Vp-p (H) 5.5 Vp-p (H) 5.4 Vp-p (H) 1.175 kVp-p (H) 90.0 Vp-p (H) 1.8 Vp-p (H) 57.2 Vp-p (H) 11.5 Vp-p (H) 13.1 Vp-p (H) 9.3 Vp-p (H) 12.8 Vp-p (H) 1.5 Vp-p (H) 1.181 kVp-p (H) 1.7 Vp-p (H) D BOARD IC VOLTAGE LIST...

  • Page 18: Semiconductors

    [ POWER, CONVERGENCE ] D BOARD SEMICONDUCTOR LOCATION LIST DIODE D516 D607 D902 D919 J - 2 IC904 Q516 D401 H-10 D517 M-15 D608 A - 8 D903 D920 K - 5 IC401 H-11 IC905 Q518 H-11 J - 3 TRANSISTOR D402 G-12...

  • Page 19: Electrical Parts List

    CPD-2401 SECTION 7 ELECTRICAL PARTS LIST The components identified by [ in this manual RESISTORS Note: have been carefully factory-selected for each • All resistors are in ohms set in order to satisfy regulations regarding X- REF.NO. The components identified by shading PART NO.
  • Page 20 CPD-2401 Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ are critical for safety. ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer Replace only with part number specified.
  • Page 21 CPD-2401 Note: Note: The components identified by shading Les composants identifies per un trame and mark ¡ ¡ ¡ ¡ ¡ et une marque ¡ ¡ ¡ ¡ ¡ sont critiques pour la are critical for safety. Replace only with part number specified.
  • Page 22 CPD-2401 Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ are critical for safety. ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer Replace only with part number specified.
  • Page 23 CPD-2401 Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ are critical for safety. ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer Replace only with part number specified.
  • Page 24 CPD-2401 Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ are critical for safety. ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer Replace only with part number specified.
  • Page 25 CPD-2401 Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.
  • Page 26 CPD-2401 Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ sont critiques pour la securite. Ne les remplacer are critical for safety.
  • Page 27 CPD-2401 Note: Note: The components identified by shading Les composants identifies per un trame et une marque and mark are critical for safety. sont critiques pour la securite. Ne les remplacer que par une piece portant le numero specifie. Replace only with part number specified.
  • Page 28 CPD-2401 Note: Note: The components identified by [ [ [ [ [ in this manual have been The components identified by shading carefully factory-selected for each set in order to satisfy and mark ¡ ¡ ¡ ¡ ¡ are critical for safety.

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