D825TM D825TM SERVICE MANUAL D825TM N. Hemisphere Model Equator Model Chassis No. SCC-L06C-A CHASSIS SPECIFICATIONS Power Consumption Picture tube 0.25 mm aperture grill pitch Maximum 15 inches measured diagonally 110W Nominal 90-degree deflection 80W, 273 BTU/h Deflection frequency Video image area (14"...
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D825TM POWER SAVING FUNCTION NOTE: If no video signal is input to the monitor, the This monitor has three Power Saving modes. "NO INPUT SIGNAL" message appears. After By sensing the absence of a video signal from the about 30 seconds, the Power Saving function...
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D825TM SAFETY CHECK-OUT (US Model only) After correcting the original service problem, perform LEAKAGE TEST the 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 microampere).
Warning Messages ..............12 Parts and Controls ..............5 Troubleshooting ..............12 The OSD (On-screen Display) System ......... 6 Dell Computer Corporation’s Environmental Program . 14 Resetting the Adjustments ............. 9 Appendix ................109 Precautions 6 u (POWER) switch and indicator (page 11) (RESET) button (pages 6 and 9) Resets the adjustments to the factory settings.
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Customizing Your Monitor Getting Started Customizing Your Monitor 3 Using the SCREEN OSD Adjusting the Settings Adjusting the Picture Brightness and Contrast You can adjust the convergence of the picture and cancel the 1 Using the COLOR OSD picture’s moire using the SCREEN OSD. Convergence is the alignment of the Red, Green and Blue Press the ¨...
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Customizing Your Monitor Getting Started Customizing Your Monitor 4 Using the ZOOM OSD 6 Using the SIZE OSD 8 Using the GEOMETRY OSD Resetting the Adjustments You can enlarge or reduce the picture size using the ZOOM You can adjust the picture size using the SIZE OSD. You can adjust the picture’s geometry using the GEOMETRY OSD.
Customizing Your Monitor Additional Information Graphic Enhancement Mode Warning Messages (GEM) If there is something wrong with the input signal, one of the following messages appears. The input signal condition You can automatically change the characteristics of the picture to match the way you use your monitor with the Graphic INFORMATION “OUT OF SCAN RANGE”...
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Getting Started Additional Information Symptom Check these items You cannot adjust the monitor • If the Control Lock function is set to “ON,” set it to “OFF” using the OPTION OSD (page 8). with the buttons on the front panel Screen image is not centered or •...
D825TM SECTION 2 DISASSEMBLY 2-1. CABINET REMOVAL 2-2. SERVICE POSITION Two claws PUSH Cabinet PUSH A board D board Two screws (BVTP 4 x 16) 2-3. D, A and D1 BOARD REMOVAL A board Five screws (BVTP 3 x 12)
D825TM 2-4. PICTURE TUBE REMOVAL Demagnetization coil Two screws (BVTP 4 x 16) Tension spring A board Neck assy Deflection yoke Two degaussing coil holders Picture tube Four screws (Tapping screw 5) Stand assy (D board) Anode cap Two degaussing...
D825TM SECTION 3 SAFETY RELATED ADJUSTMENT When replacing parts shown in the table below, the b) HV Hold-Down Check following operational checks must be performed as a 1) Using an external DC Power supply, apply the safety precaution against X-ray emissions from the unit.
D825TM 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...
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D825TM Receive White cross-hatch. Convergence Specification Adjust HMC and VMC at six-pole magnet. < 6 Pole Magnet> Horizontal and Vertical 0.30mm 0.24mm 0.30mm 0.30mm Focus adjustment Receive R.B. cross-hatch. Adjust focus (V) and focus (H) for optimum focus. Adjust H.TILT by swinging the DY neck right and left.
D825TM 5-2. CIRCUIT BOARDS LOCATION J D1 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.
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C N 3 0 5 + 5 V S T B Y + 5 V C N 3 0 7 G N D W H T R - O U T R - O U T + 1 2 V + 1 2 V R G B P R E - A M P...
D825TM SECTION 6 EXPLODED VIEWS Note: • • Items with no part number and no descrip- Items marked " " are not stocked tion are not stocked because they are sel- since they are seldom required for routine The components identified by shading dom required for routine service.
D825TM 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. PART NO. The components identified by shading...
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D825TM 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.
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D825TM 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.
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D825TM 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.
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D825TM 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.
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D825TM 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.
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D825TM 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.
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D825TM 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.
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D825TM 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.
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D825TM The components identified by [ [ [ [ [ in this manual have been Note: The components identified by shading carefully factory-selected for each set in order to satisfy and mark ¡ ¡ ¡ ¡ ¡ are critical for safety.