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15" CRT Colour Monitor
Service
Service
Service
Service Manual
Description
1.0
IMPORTANT SAFETY NOTICE .........................1
2.0
SPECICATION .......................................................2
2.1
2.2
2.3
....................................................... 4
2.4
2.5
......................................................... 5
2.6
......................................................... 5
2.7
2.8
2.9
V
2.10
2.11
2.12
2.13
2.14
................................................... 14
2.15
2.16
................................................................. 15
2.17
2.18
.................................................... 15
3.0
INTRODUCTION..................................................16
4.0
MECHANICAL INSTRUCTION ...........................17
5.0
ALIGNMENT........................................................22
5.1
5.2
5.3
5.4
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 TRANSFORMET FOR THIS UNIT WHEN SERVICING.
Published by BCU Monitor Printed in Taiwan Copyright reserved Subject to modification M July 15,2004
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REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINES
TABLE OF CONTENTS
Page
Description
6.0 CIRCUIT DESCRIPTION .................................... 23
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
6.13
6.14
7.0
REPAIR FLOW CHART ...................................... 31
7.1
7.2
8.0
DC/AC WAVEFORM MEASUREMENT.............. 35
9.0
PCB LAYOUT ..................................................... 37
9.1
9.2
........ 22
SAFETY NOTICE
105E69/05(Samsumg)
105E69/93, 105E68/05, 105E69/05
HORIZONTAL FREQUENCIES
30-54Khz
: ....................................... 23
RECTIFIER AND FILTER CKT........................... 26
FLYBACK AND PWM CKT ................................. 26
SNUBBER CKT .................................................. 27
SYNCHRONIZED CKT....................................... 27
SYNC RPOCESSOR.......................................... 28
HOR. PROCESSOR & VERT. PRE-AMP........... 28
VERTICAL OUTPUT .......................................... 29
HORIZONTAL DRIVER CIRCUIT....................... 29
HORIZONTAL OUTPUT STAGE ........................ 29
FLYBACK TRANSFORMER............................... 29
VIDEO PRE. AMP............................................... 29
VIDEO AMPLIFIER............................................. 30
DIGIT CONTROL ............................................... 30
............................................. 31
PCB............................................................ 37
VIDEO PCB........................................................ 38
C500
Page
............................. 32
3138 106 10398
GB 8639 000 15714
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Table of Contents
Related Manuals for Philips C500
Summary of Contents for Philips C500
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Page 1: Table Of Contents
15” CRT Colour Monitor C500 Service Service Service 105E69/05(Samsumg) 105E69/93, 105E68/05, 105E69/05 Service Manual HORIZONTAL FREQUENCIES 30-54Khz TABLE OF CONTENTS Description Page Description Page IMPORTANT SAFETY NOTICE ......1 6.0 CIRCUIT DESCRIPTION ........23 SPECICATION ............2 : ........23 ENERAL ESCRIPTION RECTIFIER AND FILTER CKT...... -
Page 2: Important Safety Notice
1.0 Important Safety Notice Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics Company** Equipment. The service procedures recommended by Philips and described in these service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. -
Page 3: Specication
ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER’S REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE MANUAL. 2.0 Specication CRT Description This display unit shall employ a CRT complying with the following specification: Size: 15 inches diagonal Deflection angle:... - Page 4 Horizontal line frequency Vertical frame frequency (KHZ)±500HZ (HZ)±3HZ 31.649 59.94 46.875 48.363 53.674 85.061 2.2.3 Input Timing Limits The monitor will accept all timings within the limits of table 2 Table 2: Input Timings Limits Parameter Horizontal Vertical Frequency (30 to 54) KHz (50 to 120)Hz ≥2.5µs ≥0.4ms...
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Page 5: Preset Timing
Preset Timing M454 U-P Default Timing Table 3 sweep MODE H Pixes Fd(MHz) Fh(KHz) Th(us) Td(us) Tb(us) Tp(us) Tf(us) V Lines Polar(H/V) Fv(Hz) Tv(ms) Td(ms) Tb(ms) Tp(ms) Tf(ms) d: dot d: display b: backporch p: pulse f: front VGA60 25.175 31.469 31.777 25.422... -
Page 6: Power Cord
setting of the luminance controls. The user controls shall operate as described on table 4. This check must be performed under a diffused illumination of 10 lux and on 48k mode (Horizontal frequency). Table 4 Patterns Setting of user Controls Luminance Limits Brightness Contrast... -
Page 7: Internal Connectors
4 Identify output 5 Ground 6 Red video ground 7 Green video input 8 Blue video ground 9 Not connected 10 Logic ground 11 Identify output 12 SDA (DDC1 or DDC2B) 13 Horizontal sync. 14 Vertical sync. (VCLK) 15 SCL (DDC2B) Internal connectors All internal connectors for the interconnection of sub assemblies must be distinct in their physical characteristics or polarization so as to prevent any misconnection which may cause permanent... -
Page 8: Visual Characteristics
PLUSES PLUSES ACTIVE NONE STAND-BY NO PLUSES PLUSES BLANKED <15W@90~240VAC SUSPEND PLUSES NO PLUSES BLANKED <15W@90~240VAC NO PLUSES NO PLUSES BLANKED <5W@90~240VAC The states of power saving function shall be display by LED indication. Visual Characteristics All factory preset resolutions must guarantee the right display dimension and centering. Other resolutions can be adjusted correctly with the external controls as per section 2.5. - Page 9 horizontal and vertical axes of the screen, shall be as follows: Horizontal=270 ± 4mm Vertical=203± 4mm The external control ranges of the data area, shall be as follows: Maximum horizontal size: overscan the screen ≤255mm Minimum horizontal size: Maximum vertical size: overscan the screen ≤183mm Minimum vertical size:...
- Page 10 2.9.5 Tilt The maximum variation of the display rotation (tilt) shall be such that the following relationship shall be met: θ≤0.5 degree 2.9.6 Geometric Distortions 1. Pincushion Pincushion(top) d1≤1.5mm Pincushion(bottom) d2≤1.5mm Pincushion(leftside) a1≤1.5mm Pincushion(rightside) a2≤1.5mm ≤0.5mm "S" distortion 2. Barrel barrel(top) c1≤1.5mm barrel(bottom)
- Page 11 2.9.7 Geometric Distortion By Luminance The test pattern is composed of two white areas and a black area, the three areas are equivalents. The input signal level is 700 mV with brightness control at cut-off and contrast control at maximum(see Figure 12). The distortion introduced by dynamic High Voltage variation, due to different brightness level on the screen, are admitted with following limits: |AC - BD| or |A'C'-B' D'|≤2.0mm...
- Page 12 Figure 13:Linearity Where: X max and X min are belong to the set Xi,i=1..8 X max, X min, be Calculated Same Line Y max, Y min, be Calculated Same Row Y max and Y min are belong to the set Yi,i=1..8 2.9.9 Misconvergence The display must conform to all the following requirements: Maximum convergence error.
- Page 13 2.9.11 White Color Adjustment The chromaticity coordinates of the white color shall be verified with standard full white screen @700 mV input level with brightness control at cut-off and contrast control adjusted to 25FL nits of luminance on the center of the screen. The 1931 CIE chromaticity diagram (x, y) coordinates for the screen center shall be: x = 0.283±...
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Page 14: Luminance Uniformity
2.10 Luminance Uniformity The variation in average display luminance between any area(with dimension approximate 2 cm of diameter)on standard flat white screen, must be less than 35% of the luminance of the brightest area with brightness control at cut-off and contrast control adjusted to 80 nits of luminance on the center of screen. -
Page 15: Reliability Requirements
Relative Humidity 10% to 90% Altitude Sea level to 8,000ft 2.12.3 Storage of shipment Temperature -20°C to + 60°C Relative Humidity 10% to 90% Altitude Sea level to 40,000ft 2.12.4 TEST PROCEDURUE: • Put in temperature chamber under 60°C Time: 24 hours •... -
Page 16: Luminance Uniformity
2.15 Luminance Uniformity The variation in average display luminance between any area(with dimension approximate 2 cm of diameter)on standard flat white screen, must be less than 35% of the luminance of the brightest area with brightness control at cut-off and contrast control adjusted to 80 nits of luminance on the center of screen. -
Page 17: Introduction
3.0 INTRODUCTION This document is related to a 15" CRT color monitor MC500 to be used with various kinds of graphic adapters, including IBMVGA, VESAVGA, ERGOVGA, SVGA, UVGA and XGA modes. It is intended as a mutisync monitor type based on microprocessor unit, capable to support all the video standards. This monitor, simply adjusting image size and centering by means of the user controls gathered on the front panel, can support other graphic standards. -
Page 18: Mechanical Instruction
4.0 MECHANICAL INSTRUCTION Remove base Push the hook to remove base. - Page 19 Remove 4 screws between bezel and back cover.
- Page 20 Remove back cover Remove 4 screws to remove guild L & R...
- Page 21 Remove 4 screws to remove bezel...
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Page 23: Alignment
5.0 ALIGNMENT Warm up the monitor for at least 30 minutes before adjustment. • Set the front of CRT to the east. • Turn all VR set to center position. B+ Voltage, G1, H. Position Adjustment Use front control key adjust the display size about 270mm, adjust VR501 let the voltage of FBT PIN3 cathode is 130±0.3V. -
Page 24: Circuit Description
6.0 CIRCUIT DESCRIPTION General Description: This document is related to a 15" CRT color monitor C500P to be used with various kind of graphic adapters, including IBMVGA, VESAVGA, ERGOVGA, SVGA, UVGA and XGA modes. It is intended as a mutisync monitor type based on microprocessor unit, capable to support all the video standards. Other graphic standards can be supported by this monitor, simply adjusting image size and centering by means of the user controls gathered on the front panel. - Page 25 MCU function Process the H.V-sync Control H-size, V-size, Brightness, Contrast Process the status of Monitor Process the data and output the data H-size ,V-size ,brightness and contrast control voltage range is:0~5V H. V process and AMP function 1.DC/DC converter controller 2.Advanced EW drive 3.Advanced asymmetry corrections 4.Automatic multi-standard synchronization...
- Page 26 Horizontal oscillator resistor input HPLL1F: Horizontal PLL1 loop filter input 10.HposF : Horizontal position filter and soft-start time constant capacitor input 11.Hdycor: Horizontal dynamic correction output 12.Hfly: Horizontal flyback input 13.Refout: Reference voltage output 14.Bcomp: B+ DC/DC error amplifier output 15.Bregln: Regulation feedback input of the B+ DC/DC converter controller 16.Bisence:...
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Page 27: Rectifier And Filter Ckt
Power supply RECTIFIER AND FILTER CKT The 90Vac-265Vac input line voltage is rectified by D901- D904, and smoothed by C906 to provide DC operating voltage for the circuit. FLYBACK AND PWM CKT When power is initially applied to the circuit,C909 charges through R903, Q902.When the voltage across C909 reaches a level of 16V, U901 is enabled, turning on Q901 and turning off Q902 to complete start-up action. -
Page 28: Snubber Ckt
During the On-time of Q901, energy is stored in T900. At this time the polarity of the output windings is such that all output rectifiers are reverse biased and no energy is transferred. Primary current is sensed by R907 and compared to a DC level that is determined by voltage feedback. When this level is reached, Q901 is turned off and the polarity of all T900 windings reverses , forward biasing the output rectifiers. -
Page 29: Sync Rpocessor
SYNC RPOCESSOR H-sync & V-sync or H+V input to U1(u-P), then u-P output the H-out & V-out to U401(TDA9111). HOR. PROCESSOR & VERT. PRE-AMP Fig. 3 is the block diagram of IC TDA9111. 6.7.1 Block Diagram 6.7.2 Hor. processor The H-out that come from u-P will input to the pin 15 of U401,it will be compared with the oscillator sawtooth voltage by the PLL1(pin 26) phase detector, After that, it will be compared again with the flyback pulse (pin 1) by the PLL2. -
Page 30: Vertical Output
VERTICAL OUTPUT IC U601(STV 9302A) is the vertical amplifier IC, the output pin5 connect to the YOKE .The sawtooth current float across the YOKE to make vertical deflection. Fig. 4 is the block diagram of IC STV9302A. Block Diagram HORIZONTAL DRIVER CIRCUIT The driver pulse that come from U401 pin26 drive Q506, then transformer T501 convert driver pulse to driver current to drive horizontal output transistor Q801. -
Page 31: Video Amplifier
6.13 VIDEO AMPLIFIER The video amplifier is Q301, Q302, Q303, Q304, it amplify video signal to about 40Vpp. Video output signal add to cathode by AC coupling. The DC bias is controlled by the output pwm of IC U201. Block Diagram 6.14 DIGIT CONTROL Digit control circuit includes micro processor U1(NT68F659), EEPROM IC(24LC04). -
Page 32: Repair Flow Chart
7.0 REPAIR FLOW CHART Trouble Shooting 7.1.1 Power Supply Check Start Check and repair EMI filter Check fuse, and Q901, I/P Rectifier FUSE OPEN R 905,U901,R906 Check and repair Q902, Q901 VDS Q903,D908,U901,R909, waveform normally? D909, R908 Check R909,D943,D909 Is 7.5V R913, R916, VR901 in spec? Check Q940,Q941,D942,... -
Page 33: Monitor Check Flowc
Monitor Check Flow Chart 7.2.1 No Raster... - Page 34 7.2.2 No picture...
- Page 35 7.2.3 No Vertical Deflection ( Raster Become A Horizontal Line)
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Page 36: Dc/Ac Waveform Measurement
8.0 DC/AC WAVEFORM MEASUREMENT... -
Page 38: Pcb Layout
9.0 PCB LAYOUT Main PCB... -
Page 39: Video Pcb
VIDEO PCB... - Page 40 APPENDIX A: DISPLAY UNTY ASSEMBLY...
- Page 57 APPENDIX B: P.C.B.A. ASSEMBL...
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Page 76: Different Part List
CRT&YOKE ASSY-LG 51A14030005 CRT&YOKE ASSY-SMG DC020157200 H-CON SET KA000001ZZ4 LOCKING CABLE TIE CL700002000 COIL SET CLA4M100106 DEGAUSSING COIL KA000600ZZ0 LOCKING CABLE TIE MECH PARTS PHILIPS EX03T001802 RETURN SPRING FBC55731500 PUSH KNOB FBC55731600 PUSH KNOB FCC55721000 GUIDE-L FCC55722000 GUIDE-R FBC55741500 POWER KNOB...