Philips DELLP1230 Service Manual
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Philips DELLP1230 Service Manual

22" auto scan colour monitor
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22" Auto scan Colour Monitor
Service
Service
Service
Description
Important Safety Notice ------------------------------ 2
Technical Data ----------------------------------------- 3
OSD menu tree-----------------------------------------5
Trouble Shooting------------------------------------7~8
Mechanical Instructions-------------------------------9
Wiring Diagram----------------------------------------10
Electrical Instructions---------------------------16~18
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC
EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINES
Published by BCU Monitors
Printed in Taiwan

TABLE OF CONTENTS

Page
Description
Recommended parts list ----------------------------37
Safety test requirements----------------------------44
---------11~15
General product specification------------------45~75
Circuit Description------------------------------76~77
Repair Flow Chart-------------------------------78~86
Waveform----------------------------------------87~91
SAFETY NOTICE
Copyright reserved
Subject to modification M
Chassis : M25P
DELLP1230
Horizontal frequencies
parts list ----------------------------------38~43
Feb. 12 2004
6L3P10/76
30 - 130 kHz
Page
------------24~26
------------27~29
3138 106 10350
GB

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Summary of Contents for Philips DELLP1230

  • Page 1: Table Of Contents

    22" Auto scan Colour Monitor Chassis : M25P DELLP1230 Service Service Service 6L3P10/76 Horizontal frequencies 30 - 130 kHz TABLE OF CONTENTS Description Page Description Page Important Safety Notice ------------------------------ 2 Drive Schematic Diagram & C.B.A. ------------24~26 Technical Data ----------------------------------------- 3 Video Schematic Diagram &...

  • Page 2: Important Safety Notice

    IMPORTANT SAFETY NOTICE DELL P1230 M25P Go to cover page Proper service and repair is important to the safe, FOR PRODUCTS CONTAINING LASER : reliable operation of all DELL Company** Equipment. The service procedures recommended by DELL and DANGER- Invisible laser radiation when open. described in this service manual are effective methods of performing service operations.

  • Page 3: Technical Data

    Technical Data DELL P1230 M25P Go to cover page Pin assignment : Specification 7\ SH 1 5 / 9 7 $ 0 L W VXEL VKL1 ) Dimensions : 22" NF Phosphor Pitch ( mm ) : 0.24 ( at center ) Mask : AG Deflection angle...

  • Page 4: Frond Control&Connections

    Frond control & connections DELL P1230 M25P Go to cover page Front View Power port D-SUB graphics port 1 & 2. (Connector) Cable Connections On Back of Monitor and Computer Note: The color of the monitor may vary Power button-Switches your monitor on Power indicator-This light glows green during normal operation and glows amber when in the power saving mode.

  • Page 5: Osd Menu Tree

    OSD menu tree DELL P1230 M25P Go to cover page The OSD Tree Below is an overall view of the structure of the On-screen Display. You can use this as reference when you want to later on work your way around the different adjustments.

  • Page 6: Lock/Unlock,Burn In&Service Mode

    Lock/Unlock,Burn in, Service Mode DELL P1230 M25P OSD Lock To leave factory mode OSD lock is a feature which disables the OSD controls. It can be used when the monitor is set up for demonstration purposes or when 7.After alignment of factory mode. Turn off monitor(if you do not turn adjustment of the OSD is not desirable.

  • Page 7: Trouble Shooting

    DELL P1230 M25P Common Problems The following table contains general information about common monitor problems you might encounter COMMON SYMPTOMS WHAT YOU SEE POSSIBLE SOLUTIONS · No Video/LED off No picture, monitor’ s dead. Check connection integrity · Verify the AC outlet ·...

  • Page 8: Trouble Shooting

    DELL P1230 M25P Go to cover page Common problems The following table contains general information about common monitor problems you might encounter · Brightness Problems Picture too dim or too bright Perform monitor "Reset" · Adjust brightness & contrast controls ·...

  • Page 9: Mechanical Instructions

    DELL P1230 M25P Mechanical Instructions Go to cover page 0. Location of the panel 0.1 Main panel (1160) 0.2 Video panel (1161) 1. General To be able to perform measurements and repairs on the "circuit boards", the monitor should be placed in Service Position (fig. 1) first: How to remove the back cover of monitor : There are 2 screws in the lid [1 screw are at the right side of the monitor, The other 1 screw are at the left side of the monitor],to fix...

  • Page 10: Wiring Diagram

    DELL P1230 M25P...

  • Page 11: Hex Data Of Ddc2B/ Ddc Instruction

    Hex Data of DDC2B DELL P1230 M25P Go to cover page **************************************************** Standard Timing Identification #7 EDID log file Horizontal active pixels : 1920 **************************************************** Aspect Ratio : 4:3 Refresh Rate : 75 Vendor/Product Identification ID Manufacturer Name : DEL Standard Timing Identification #8 ID Product Code : 700C (HEX.)

  • Page 12: Ddc Instructions

    DDC Instructions DELL P1230 M25P Go to cover page 1. General 3. Pin assignment DDC Data Re-programming A. 15-pin D-Sub Connector In case the main EEPROM with Software DDC which store all factory settings were replaced because a defect,repaired monitor the serial numbers have to be re-programmed.
  • Page 13 DDC Instructions (Continued) DELL P1230 M25P Go to cover page 4. Configuration and procedure 3. At the submenu, type the letter of your computer's floppy disk drive followed by :EDID301 (for example, A:\EDID301, as shown in Fig. 5). There is no Hardware DDC (DDC IC) anymore. Main EEPROM stores all factory settings and DDC data (EDID code) which is so called Software DDC.
  • Page 14 DDC Instructions (Continued) DELL P1230 M25P Go to cover page Re-programming EEPROM (Software DDC) 4. Click icon (Read EDID function) to read DDC EDID data from Step 1: After initialize alignment box, connecting all cables and monitor. The EDID codes will display on screen as shown in Fig. 13. box as shown in Fig.
  • Page 15 DDC Instructions (Continued) DELL P1230 M25P Step 5: **Configuration Setup & Enter Factory Mode ** Step 6: Write DDC data for "write EDID data" Click (Write EDID) icon from the tool bar to write DDC data. Bring up "Writing 0%~100%, ready" a progressing bar on the left Click icon from the tool bar to bring up the Configuration down corner.
  • Page 16 DELL P1230 M25P To access factory mode 5.1.Turn off monitor (do not turn off PC) 5.2. Press " " and " "simultaneously on the frond control Display Mode Horizontal Vertical Pixel Sync Polarity Frequency(kHz) Frequency(Hz) Clock(MHz) (Horizontal/vertical) panel, then press " "...
  • Page 17 DELL P1230 M25P 7. Alignment of Vg2 cut-off point, white tracking 7.1External degaussing 7.1.1 Remove ferromagnetic measuring equipment, Iron tablet etc in the neighbourhood of the apparatus within the half meter. FOCUS(H V) VLINBAL USER RASTER(H V) LIN(H V)SUB 7.1.2 Positioned in the E - W direction (CRT face east), the monitor V(OFFSET GAIN) SUB has to be degaussed by using external degaussing coil.

  • Page 18: Electrical Instructions

    Electrical Instructions (Continued) DELL P1230 M25P Go to cover page 8. Focus adjustment - Apply a video signal in the 1280 x1024 with 146kHz/85 Hz mode - Select " M/E " pattern. - Set the brightness at center (50%) and the contrast to MAX.-position.

  • Page 19: Warning And Notes /Black Diagram

    Warning and Notes DELL P1230 M25P Go to cover page Warnings Notes . Safety regulations require that the unit should be returned The direct voltages and waveforms are average voltages. in its original condition and that components identical to They have been measured using the Service test software the original components are used.

  • Page 20: Block Diagram

    Block Diagram DELL P1230 M25P Go to cover page...

  • Page 21: Terminal Schematic Diagram & C.b

    F026 E14 STANDS FOR CHIP COMPONENTS. F027 F4 F028 F5 F029 F5 TYT12- SETNAME M25P ( U3 ) CLASS_NO -------- Terminal Board 3138 178 6744 6L3P10/76 (DELL P1230) 2003-12-05 NAME Andy Huang SUPERS. CHECK DATE 2003-12-05 KONINKLIJKE PHILIPS ELECTRONICS N.V. 2000...
  • Page 22 Terminal Schematic Diagram DELL P1230 M25P Go to cover page...
  • Page 23 Terminal Panel C.B.A.-2 DELL P1230 M25P Go to cover page...

  • Page 24: Drive Schematic Diagram & C.b

    M25P ( U3 ) F007 K1 F008 L1 CLASS_NO -------- F009 L1 F010 L1 DRIVER BOARD(MCU) F011 M1 F012 M1 3138 178 6729 R201~R298 F013 M1 6A3P11/76 2003-10-31 NAME Ivy Su/CP Chou SUPERS. CHECK ******** DATE 2003-10-31 KONINKLIJKE PHILIPS ELECTRONICS N.V. 2000...
  • Page 25 Drive Panel C.B.A.-1 DELLP1230 M25P Go to cover page...
  • Page 26 Drive Panel C.B.A-2 DELL P1230 M25P Go to cover page...

  • Page 27: Video Schematic Diagram & C.b

    F027 J16 3720 B11 3720 B11 F028 A14 F028 A14 TYT12- SETNAME M25P ( U3 ) CLASS_NO -------- VIDEO BOARD 3138 178 6743 6L3P10/76 (DELL P1230) 2003-12-05 NAME CP Chou/Ivy Su SUPERS. CHECK ******** DATE 2003-12-05 KONINKLIJKE PHILIPS ELECTRONICS N.V. 2000...
  • Page 28 Video Panel C.B.A-1 DELL P1230 M25P Go to cover page...
  • Page 29 Video Panel C.B.A.-2 DELL P1230 M25P Go to cover page...
  • Page 30 SUPERS. 3428 D13 6464 I9 F131 L17 3429 D13 6491 H5 F132 M24 CHECK DATE 2003-12-05 KONINKLIJKE PHILIPS ELECTRONICS N.V. 2000 3430 D13 6492 H5 F133 M24 3431 E8 6501 E15 F134 M23 3432 E8 6502 D15 F135 M24 3433 E8...

  • Page 31: Main Schematic Diagram & C.b

    7143 H14 6L3P10/76 (DELL P1230) 7144 J12 2003-12-05 7145 J14 7155 G11 NAME C.C. Liao / J. Cheng SUPERS. 7161 H7 CHECK ******** DATE 2003-12-05 KONINKLIJKE PHILIPS ELECTRONICS N.V. 2000 8101 B7 8102 B7 8103 D9 9106 C7 9107 B5...
  • Page 32 Main Panel C.B.A. -1 DELL P1230 M25P Go to cover page...
  • Page 33 Main Panel C.B.A.-2 DELL P1230 M25P Go to cover page...

  • Page 34: Key Control Diagram & Panel C.b

    Key Control Panel Schematic Diagram & C.B.A. DELL P1230 M25P Go to cover page...

  • Page 35: Mhr Schematic Diagram/Exploded View

    MHR Schematic Diagram DELL P1230 M25P Go to cover page...

  • Page 36: Exploded View

    Exploded View DELL P1230 M25P Go to cover page 313817867421 MAIN PCB ASSY 1160 313817867441 TERMINAL PCB ASSY 313817867301 MHR PCB ASSY 1162 1165 313812754401 BACK COVER ASSY (BLK) 313812754421 PEDESTAL ASSY 1161 313817867431 VIDEO PCB ASSY 1164 313817867291 CONTROL PCB ASSY DRIVE PCB ASSY 313817867451 1163...

  • Page 37: Recommended Parts List

    Recommanded Parts List DELL P1230 M25P Go to cover page 7505 933984890682 IC LM358N (ST00) L Model : 6L3P10/76(863900015121) 7541 932218090687 TRANS IRF730B 0001 313812754391 FRONT CABINET ASSY-MG 7542 932204822682 TRA POW 2SC2344E (TSAJ) B 0002 313812754401 BACK COVER ASSY-MG 7543 932204823682 TRA POW 2SA1011E...

  • Page 38: Spare Parts List

    Spare Parts List DELL P1230 M25P Go to cover page Model : 6L3P10/76 4444 313810610349 CD ROM - SERVICE MANUAL 2401 203830250095 CAP MPOL 100V S 100N PM10 A 4444 313810610350 SERVICE MANUAL 2421 203830250095 CAP MPOL 100V S 100N PM10 A Mechanical 2422 203830250121...
  • Page 39 Spare Parts List DELL P1230 M25P Go to cover page 2604 202055890604 CERHDT RR 2KV S 100P PM10 A 3158 232273061479 RST SM 0805 RC11 47R PM5 R 3396 232273061103 RST SM 0805 RC11 10K PM5 R 2605 202055890561 CERHDT RR 2KV S 220P PM10 A 3159 232273061182 RST SM 0805 RC11...
  • Page 40 Spare Parts List DELL P1230 M25P Go to cover page 3523 230620403159 RST FUSE NFR25 S 15R PM5 A 5543 313816873421 CENTER TRANSFORMER-SRW33IS-T20 3630 232273061104 RST SM 0805 RC11 100K PM5 R 3524 230620403159 RST FUSE NFR25 S 15R PM5 A 5544 313811878951 H SHIFT CHOKE COIL...
  • Page 41 Spare Parts List DELL P1230 M25P Go to cover page 2752 202203100228 ELCAP KM 100V S 47U PM20 B 6545 933751660673 DIO REC RGP10D A (VISH) A 7566 932209265685 TRA SIG SM MUN2211J (ONSE) R 2753 202203100224 ELCAP KM 250V S 1U PM20 A 6566 933256030673 DIO SIG 1N4148...
  • Page 42 Spare Parts List DELL P1230 M25P Go to cover page 5737 242254944197 IND FXD 0805 EMI 100MHZ 220R R 2010 223891015649 CER2 0805 X7R 25V 100N PM10 R 3724 232273061689 RST SM 0805 RC11 68R PM5 R 5760 313816874511 FERRITE BEAD 2011 202202000886 ELCAP SH...
  • Page 43 Spare Parts List DELL P1230 M25P Go to cover page 1163 313817867451 CONTROL PCB ASSY(DELL) 3219 212211000458 RST MFLM MF1/2WS A 21K PM1 A 7201 932213999682 IC LM61BIZ (NSC0) B 3220 212211000374 RST MFLM MF1/2WS A 4K7 PM1 A 7203 933984890682 IC LM358N (ST00) L...

  • Page 44: Safety Test Requirements

    Safety test requirements DELL P1230 M25P Go to cover page 3. Equipments and Connection All units that are returned for service or repair must pass the original manufactures safety tests. Safety testing requires both 3.1. Equipments Hipot Ground Continuity testing. For example : - ChenHwa 9032 PROGRAMMABLE AUTO SAFETY HI-POT TEST INSTRUCTION...

  • Page 45: General Product Specification

    DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page M25P Dell P1230 SH590 GENERAL PRODUCT SPECIFICATION 202P Gs3 CM25 . MICRO PROCESSOR-BASED DIGITAL CONTROL WITH FACTORY MODES, 9 PRESET MODES AND 16 USER MODES TO ENSURE PICTURE CONFIGURATIONS ARE ALWAYS MAINTAINED WHEN SWITCH BETWEEN COMMON VIDEO MODES AND USER DEFINED CUSTOM MODES.
  • Page 46 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page CONTENTS Foreword Product profile Scanning frequencies Video dot rate Power input Power consumption Dimensions Weight Functions Ambient temperature 2.10 Regulatory compliance (SAFETY, EMI/EMS) Electrical characteristics Interface signals Interface 3.2.1 Cable 3.2.2 Input connectors 3.2.3 Adaptor 3.2.4 OSD function control...
  • Page 47 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page Flagwaving - jitter Image size 4.5.1 Actual display size 4.5.2 Max. scan size Image centering deviation 202P Gs3 CM25 Picture shift range Display dimension stability Geometric distortions 4.10 Picture tilt 4.11 Image non-linearity 4.12...
  • Page 48 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 0 FOREWORD This specification describes a 22" high resolution digitally controlled auto scan color monitor with max. resolution up to 2048x1536/75Hz non-interlaced. PRODUCT PROFILE This display monitor unit is a complete color display monitor enclosed in Dell styling cabinet which has...
  • Page 49 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 2.3 Video dot rate : 355.03MHz 2.4 Power input : 90 - 264 Vac, 47-63 Hz 2.5 Power consumption : 115W typ. 202P Gs3 CM25 2.6 Dimensions : 501(W) x 501.8(H) x 465.8(D) mm 2.7 Weight : 29.6 kg 2.8 Functions:...
  • Page 50 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 3.0 Electrical characteristics 3.1 Interface signals The input signals can be applied in three different modes: 1). Video, H-sync & V-sync 2). Video & Composite Sync 3). Video with Sync On Green (composite Green video). Video : 0.7 Vp-p, input impedance, 75 ohm Sync.
  • Page 51 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page - 15 pin D-sub1 & D-sub 2 connectors (rear) pin assignments : pin no. Red video input Green video input (Green video with Sync On Green input) 202P Gs3 CM25 Blue video input Ground Ground...
  • Page 52 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 3.2.4 Software control functions via OSD/control - Adjustable functions: P1230 Main Controls Language Input signal selection Zoom Adjust horizontal Adjust vertical Adjust shape Adjust color Reset to factory settings Extra Controls Close Main Controls Move selection then “...
  • Page 53 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page Adjust color 9300°K for general use 6500°K for image management 5500°K for photoretouch -sRGB 202P Gs3 CM25 - User preset Reset to factory settings - No -Yes Extra Controls - Adjust moire Horizontal - Degauss Adjust convergence...
  • Page 54 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page MODE NO. RESOLUTION 720 x 400 640 x 480 640 x 480 640 x 480 Dot clock(MHz) 28.321 25.175 31.500 36.000 31.468 kHz 31.469 kHz 37.500 KHz 43.269 kHz A ( us ) 31.778 31.778 26.667...
  • Page 55 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page MODE NO. RESOLUTION 1024 x 768 1152 x 864 1152 x 864 1280 x 1024 Dot clock(MHz) 94.500 108.000 119.651 108.000 202P Gs3 CM25 68.677 kHz 67.5 kHz 77.095kHz 63.981 kHz A ( us ) 14.561 14.815...
  • Page 56 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page MODE NO. RESOLUTION 1400 x 1050 1600 x 1200 1600 x 1200 1600 x 1200 Dot clock(MHz) 179.260 202.500 229.500 93.755 kHz 75.000 kHz 93.750 kHz 106.250 kHz A ( us ) 10.666 13.333 10.667...
  • Page 57 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page MODE NO. RESOLUTION 1600 x 1000 1792 x 1344 1920 x 1440 1856 x 1392 Dot clock(MHz) 194.208 204.750 297.594 218.250 202P Gs3 CM25 89.250 kHz 83.640 kHz 112.725kHz 86.333 kHz A ( us ) 11.204 11.956...
  • Page 58 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 3.3.3 Horizontal scanning Sync polarity : Positive or Negative Scanning frequency : 30 - Retrace time : 1.6 sec (typical) 3.3.4 Vertical scanning Sync polarity : Positive or Negative Scanning frequency : 50 - 160 Hz Power input connection Power cord length...
  • Page 59 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 3.8 Power management The power consumption and the status indication of the set with power management function are as follows, 202P Gs3 CM25 STATUS Horizontal Vertical Power Spec Pulse Pulse as normal on Green No Pulse Pulse...
  • Page 60 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 4.2 Resolution Mode Resolution H. freq. / V. freq Standard 640 x 480 31.469kHz/59.94Hz (VESA/60) 640 x 480 43.269kHz/85.080Hz (VESA/85) 800 x 600 53.674kHz/85.061Hz (VESA/85) 1024 x 768 60.023kHz/75.029Hz (VESA/75) 1024 x 768 68.677kHz/84.997Hz (VESA/85)
  • Page 61 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page Picture shift range H-shift range : total 20 mm V-shift range : total 15 mm. Display dimension stability Due to brightness : 1.0 % 202P Gs3 CM25 Due to aging : 1.0 % Due to mains voltage : 1.0 %...
  • Page 62 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 4.12 Mis-convergence The maximum convergence error should be measured on a white line and represents the maximum distance between the center of the red, green and blue lines over the whole image area. Max.
  • Page 63 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 4.16 White uniformity Set the brightness control at center 50 % position, then adjust the contrast, control to set the luminance at the center of the screen to 100% max.. The color coordinate at any point on the screen should be: 202P Gs3 CM25 X = X (center) +/- 0.015...

  • Page 64: Environmental Characteristics

    DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 5.0 Mechanical characteristics 5.1 Controls Front side : - AC power switch - OSD function key Rear D- sub 1 / D-sub 2 - Power cord socket 5.2 Unit dimension / Weight Unit dimensions (including pedestal): 501(w) x 503 (h) x 471(d) mm Unit Net weight: 30 kg 5.3 Tilt and swivel base...
  • Page 65 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 6.1 Susceptibility of display to external environment Operating -Temperature : 0 to 35 C (Guaranteed optical performance) -Relative Humidity : 20 to 80 % (non-condensing) -Altitude : 10,000ft 202P Gs3 CM25 Storage -Temperature C : -20 to 60...
  • Page 66 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page Reliability Mean Time Between Failures MTBF to be calculated according to military standard MIL-HDBK- 217C. MTBF (Excluding the CRT) > 60,000 hrs @ 70% CL before FCS MTBF (Excluding the CRT) > 120,000 hrs @ 90% CL after FCS Total hrs (power on) x Total sets Practice of MTBF = ----------------------------------------...
  • Page 67 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 202P Gs3 CM25 202P Gs3 CM25 388 mm 392 mm 396 mm FIG-1 IMAGE DEMENSION 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell 130KHz 2003-12-19 C.C.Liao...
  • Page 68 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 392 mm |A-B| AND |C-D| < 4 mm FIG-2 IMAGE CENTERING 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell P1230 130KHz 2003-12-19 C.C.Liao 2003-12-19...
  • Page 69 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 202P Gs3 CM25 202P Gs3 CM25 392 mm |A-B| < 2 mm FIG-3 IMAGE ROTATION 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell 130KHz 2003-12-19 C.C.Liao...
  • Page 70 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 392 mm A, B < 2.0 mm C, D < 1.5 mm FIG-4 IMAGE GEOMETRY 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell P1230 130KHz 2003-12-19 C.C.Liao 2003-12-19...
  • Page 71 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 202P Gs3 CM25 202P Gs3 CM25 100 mm Pattern B Pattern A 392 mm FIG-5 CONTRAST AND BRIGHTNESS MEASUREMENT PATTERNS 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell 130KHz 2003-12-19 C.C.Liao...
  • Page 72 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page ZONE B ZONE A 392 mm FIG-6 MISCONVERGENCE MEASUREMENT AREA 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell P1230 130KHz 2003-12-19 C.C.Liao 2003-12-19...
  • Page 73 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page 202P Gs3 CM25 202P Gs3 CM25 FIG 6 SYMBOL FORMAT FOR FOCOS CHECK 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell 130KHz 2003-12-19 C.C.Liao...
  • Page 74 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page SEPARATE SYNC. VIDEO HORIZONTAL VIDEO VERTICAL COMPOSITE SYNC. VIDEO HORIZONTAL FIG-8 TIMING CHART -1 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell P1230 130KHz 2003-12-19 C.C.Liao 2003-12-19...
  • Page 75 DELL P1230 M25P GENERAL PRODUCT SPECIFICATION(Continued) Go to cover page VIDEO VERTICAL 202P Gs3 CM25 202P Gs3 CM25 COMPOSITE SYNC. & VIDEO ( SYNC. ON GREEN ) HORIZONTAL VERTICAL FIG-9 TIMING CHART -2 22" CMTR-M25P-Dell-P1230 8639 000 15121 TYPE : 6L3P10/76 : Dell 130KHz 2003-12-19 C.C.Liao...

  • Page 76: Circuit Description

    Dell P1230 M25P Circuit Description Go to cover page A. HORIZONTAL DEFLECTION / VERTICAL DEFLECTION / EHT GENERATOR GENERAL DESCRIPTION HORIZONTAL DEFLECTION: " The P1230 using 22 flat AG CRT is real Digital Controlled Auto- " scan Color Display Monitor with high resolution which can operate The heart of horizontal/vertical deflection is TDA4856 -- deflection "...
  • Page 77 Circuit Description Dell P1230 M25P Go to cover page EEPROM as EDID of Data Display Channel, this EEPROM is also used to store all factory setting like H-size, H-shift, V-size, V-shift, - - - - etc. A. PURITY AND CONVERGENCE CONTROL There are four corner coils defined as purity coils and installed around the CRT, these coils are driven by four DC amplifiers respectively, they provide the purity correction via...

  • Page 78: Repair Flow Chart

    Repair Flow Chart Dell P1230 M25P Go to cover page 1. Sympton : check 7121 pin1 check 7121 check 7121 check 7121 no startup sound pin 3 pin4 Waveform right? pin2 LED light off check check check replace 7121 3106/3111 1103/6101/ 3121/3123 7121 pin3/2103...
  • Page 79 Repair Flow Chart Dell P1230 M25P Go to cover page 7+/-0.2...
  • Page 80 Repair Flow Chart Dell P1230 M25P Go to cover page C. Horizontal deflection output repair flow : 1. Sympton : check B+ Control check B+ Control without 7541 base 7422,7423 base H-deflection. check B+ Control check check Hsync replace 5543 230V 7541 drain 7421 pin6...
  • Page 81 Repair Flow Chart Dell P1230 M25P Go to cover page basic check D. Vertical Deflection Failure +15/-15V Sympton : check check one horizontal line 3578,3580 +15V,3569,6567 V_size is abnormal good good? too large/small replace replace 3569,6567,7567 3578,3580,7567 check 7567 check Pin2,pin3? 3571,3572 check...
  • Page 82 Repair Flow Chart Dell P1230 M25P Go to cover page check cpu pin6=5V E. CPU Basic Check pin9/pin8=12MhZ check list pin12/pin31=gnd check pin4 duty cycle of 4. H-linearity pwm from 0% to 100% check pin2 duty cycle of 2. H-Centering pwm from 0% to 100% 202P130K S-CAPACITOR SWITCH TABLE Hor.
  • Page 83 Repair Flow Chart Dell P1230 M25P Go to cover page check 22. Degauss active=hi no active=low check check 5, Reset 2304/3307 from 5V to 0V check duty cycle of 37. Brightness pwm from 0% to 100% check duty cycle of 4.
  • Page 84 Repair Flow Chart Dell P1230 M25P Go to cover page Basic check F. TDA4856 Vcc=pin10=12V Vcc > 9V Check List gnd =pin7=pin25=0v during startup 1. HFLB pin16 if no exist (from H.defl) CLBL=hi a pin3 amplify pin5 and it compare to pin4 inhibit pin6 output b.
  • Page 85 Repair Flow Chart Dell P1230 M25P Go to cover page Hunlock pin is floating while pll1(pin26) is 17. Hunlock unlock in searching mode 18. IIC SCL = hi initial fail could be these of IC 19 IIC SDA = hi 7421,7701,7781,7336 20 asymmetry EW to 7503 pin30...
  • Page 86 Repair Flow Chart Dell P1230 M25P Go to cover page pin26 determin the 26,27,28,29 pll1 loop filter 30K<freq.<130KHz Hpll1,Hbuf,Href, Hcap pin 27,28,29 H-Freq working range 1.compare the HFLBand control the phase of HDRV 30. PLL2 2.softstart 31 EHT_compen. compensate for the H_size owing the load variation 32.

  • Page 87: Waveform

    Waveform DELL P1230 M25P Go to cover page 7701-6 7781-5 7701-8 7001-3 7701-10 7705-11 7001-11 7705-8 7705-9 7001-18 7705-1 7705-3 7001-29 1710-6 1710-6 7705-5 1710-8 1710-11 7001-23...
  • Page 88 Waveform DELL P1230 M25P Go to cover page 7001-7 7001-16 7782-B 7001-27 7001-19 B2 7404-1 B3 7404-2 B4 7421-11 B9 7421-3 B10 7421-5 B11 7422-E B18 7567-4 B17 7567-5 B16 7567-3 B24 7461-C B25 7465-C B23 7461-B...
  • Page 89 Waveform DELL P1230 M25P Go to cover page B30 7301-38 B31 7301-40 B31 7301-40 B32 7301-41 B38 7671-G B39 7671-D B37 7651-10 B5 7421-12 B6 7421-32 B7 7421-6 B12 7566-C B13 7566-B B14 7567-2 B19 7501-G B21 7502-C B20 7501-D B28 5601-4 B26 7425-E B27 7541-S...
  • Page 90 Waveform DELL P1230 M25P Go to cover page B33 7301-34 B35 7301-4 B34 7301-33 B40 7672-D B41 5671-9 B42 5671-12 B8 7421-8 B22 5504-5 B15 7567-6 B29 7601-B B36 7652-C B1 7404-14 5130-5 5130-1 5130-3 5130-7 5130-8 5130-18...
  • Page 91 Waveform DELL P1230 M25P Go to cover page 7122-B 5130-15 5130-12 7122-E 7122-C...
  • Page 92 X-radiation emissions. For continued X-radiation protection, the replacement 3. It is essential that the service technician has an accurate HV meter tube must be the same type as the original, including suffix letter,or a Philips available at all times. The calibration of this meter should be checked approved tupe.

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