APPLICATION NOTE Circuit description of CCM420 monitor AN97032
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 Abstract 2 The CCM420 demo monitor is a full I C-bus controlled 17” colour monitor. It’s extensive geometry control and excellent video performance with a high level of integration make it a high-performance monitor at moderate cost and easy application.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 APPLICATION NOTE Circuit description of CCM420 monitor AN97032 Author: Hans Verhees Philips Semiconductors Systems Laboratory Eindhoven, The Netherlands Keywords Colour Monitor Geometry control EHT supply 2 I C control 17” HiRes Number of pages: 50 Date: 97-10-14 3
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 Summary This application note includes a brief description of the circuits of the CCM420 demo monitor excluding the video part (see references); complete circuit diagrams plus printed circuit board lay-out and parts list as well as hints on the pcb lay-out are given. Debugging of the main printed circuit board and alignment in a complete 2 monitor is also included in the report.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 CONTENTS 1. INTRODUCTION .......................................................................................................................................... 7 1.1 CCM420 Specification ........................................................................................................................... 8 1.2 List of abbreviations.................................................................................
Philips Semiconductors Circuit description of CCM420 monitor 6 Application Note AN97032
Philips Semiconductors Circuit description of CCM420 monitor 1. Application Note AN97032 INTRODUCTION 2 The CCM420 demo monitor is a full I C bus controlled monitor.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 The M41EHN tube is fitted with a rotation control coil. The tilt adjustment in this monitor allows an additional control of the bottom line (Tilt respectively NS trapezium). Front of screen performance is further enhanced by means of a brightness-uniformity circuit which can be 2 switched on/off via I C. 1.
Philips Semiconductors Circuit description of CCM420 monitor • Level TTL • Polarity Positive or negative • Horizontal frequency 15 to 84 kHz • Vertical frequency 50 to 160 Hz Application Note AN97032 User interface • Control Five button keyboard plus USER/SERVICE switch • Indication On Screen Display with 4 lines of 12 characters 1.
Philips Semiconductors Circuit description of CCM420 monitor FPOL Selection of positive / negative feedback polarity in the TDA4885 G2 CRT grid 2 Gain B Blue channel gain control register in the TDA4885 Gain G Green channel gain control register in the TDA4885 Gain R Red channel gain control register in the TDA4885 GB Green Black level GG Green gain H Horizontal H-corner Horizontal corner control register in the TDA4854 H-focus Horizontal focus control register in the TDA4854 H-moiré H
Philips Semiconductors Circuit description of CCM420 monitor PA Parallelogram PEDST Pedestal blanking enabled/disabled in the TDA4885 RB Red Black level RG Red gain SCK Serial clock SDI Serial data SMPS Application Note AN97032 Switched Mode Power Supply SMPTE Society of Motion Picture and Television Engineers SOFTST Softstart control bit in the TDA4854 STDBY Standby control bit in the TDA4854 TI Tilt TVMOD TV mode at Fmin activated/de-activated in the TDA4854 USB Universal Serial
Philips Semiconductors Circuit description of CCM420 monitor 2.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 Remarks to the block diagram: 1. The Dynamic convergence circuit is optional. The Vector Processor TDA4845 is not commercially available. 2. Due to time limitation and mechanical restrictions the sound part is, although present in the printed circuit board layout, not inserted and therefor not operational.
Philips Semiconductors Circuit description of CCM420 monitor 3. 3.1 Application Note AN97032 CIRCUIT DESCRIPTIONS Switched mode power supply The SMPS is preceded by a mains harmonic reduction coil (L1: TU305b2) in order to reduce mains harmonics distortion. This coil is short-circuited for mains voltages below 175 VAC (T6, T7 and TH2). An additional connector ‘USB-supply’ is present for an optional USB supply (under development; available ???;see references).
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 The horizontal oscillator can be synchronised in the frequency range from 15 to 85 kHz (determined by resistors R350 and R351 and capacitor C318). The value of R350 and R351 can be determined according to the equations in appendix 3. The B+ section is fed with the EWDRV signal from pin 11 with the FHMULT bit = 0 (multiplication with the frequency is achieved in the output stage).
Philips Semiconductors Circuit description of CCM420 monitor Freq.range < 30 kHz 30 - 34 kHz 34 - 37 kHz 37 - 45 kHz 45 - 53 kHz 53 - 61 kHz 61 - 65 kHz 65 - 71 kHz 71 - 78 kHz 78 - 85 kHz > 85 kHz 3.5 C423 47 nF x x x x x x - C417 120 nF x x x x x - C418 220 nF x x x x x - Application Note AN97032 C419 470 nF x x x - C420 1.2 µF x x x x - C421 5.
Philips Semiconductors Circuit description of CCM420 monitor • Application Note AN97032 Overcurrent: First level protection is here the beam-current level limiter reducing the contrast of the video stages. Second level is the maximum duty-cycle of the UC3843 (≈99%) that cannot be handled by the AC coupling of the PMOS output stage (T119 will not be driven in conduction anymore); in this situation the generator part will continue operating but the output voltage will drop to zero.
Philips Semiconductors Circuit description of CCM420 monitor 4. Application Note AN97032 CIRCUIT DIAGRAMS On the next pages the following circuit diagrams are presented: − Switched mode power supply; − Microcontroller plus deflection controller part; − Horizontal and vertical deflection output stages; − CRT grid supply circuits: Vg1, Vg2, focus and dynamic focus amplifier, EHT supply; − Rotation and sound. 4.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 An additional damper for the horizontal deflection cannot be combined with the largest S-correction capacitor. Therefor an additional damper is necessary as drawn in the circuit diagram on the left hand side. C414 4u7 200V T415 R434 Add this resistor: SFR25; 3.3 kOhm R31 R6 R5 Add this resistor: SFR25; 3.
T1 R4 96126 BC548 X1 220n 275V~ 7 2 C2 9 3 TH1 MOC2A60_5 D2 C1 1M R1 220n 275V~ R2 R3 270E 2E7 PR01 AC04 AT4043/20 250V~ 3 D7 BZX79 C6V2 NFR25H R16 18k R35 5k1 R8 1k5 D13 BZX79C5V6 2 TH2 MOC2A60_5 7 9 L1 TU305B2 T2 BSP145 R10 10E R9 10E R18 100k 5k1 R17 R37 1k R28 47k R39 820E R40 22k R38 T6 T7 36k BC548 BC548 R36 100E 680p C10 R13 1M T3 BC547 R12 1k BT151-500R D6 D8 BZX79 C33 R41 680E C13 10u 50V 3p9 C12 0E47 NFR25H R34 R33 0E33 NFR25H NFR25 1N4148
R313 100E 100E J301 R314 DEGS C305 100p C304 100p 100E R315 P0.5 P0.6 P0.7 VsyncOUT VsyncIN P1.6 HsyncOUT HsyncIN Vss Vdd ADC0 P3.3 P0.4 P0.3 P0.2 P0.1 P0.
HDRV HFLB BDRV 12V 18V 22 100E R410 R436 22E R435 22E NFR25 100E R400 10u 63V D407 1N4148 C410 R409 680E C422 68u 16V R408 33E D406 C431 47u 25V 1N4148 BZX79 D409 C6V8 18V R411 18k 10n C409 T404 BC375b C408 470n T401 BC376 TR401 CU15/35 R407 220E 4 3 33n 250V C401 D401 47u 1N4148 25V T400 BC375 C400 1 2 R438 150k 7 1 -HDFEL R421 3k9 T417 BC548 SC0 R439 10k R422 10k SC1 R442 0E47 NFR25 47u 50V C424 Vguard 10E R413 330u 16V C425 T409 BC548 R424 47k R426 150k
R168 1k HUnlock -200V T121 BC548 MPSA92 D128 1N4148 D129 1N4148 R171 1M C129 22n 100V R109 68k 560k R110 R172 120k 47k R119 51k VBLNK VG1 1N4148 C104 2n2 D105 C130 220n 250V D134 BZX79 C4V7 D130 BZX79 C62 R170 T122 IC101 UC3843p DIL8p R169 1k 11V 820E R107 3k3 T103 PH2369 1N4148 D127 330p C102 470p R167 10k 12V 100E 27p 100p C103 R108 C136 C105 C106 3n3 1N4148 100n D107 R133 270E 5k6 Vg2D R135 24k 12V LM393 3 IC102/A 2 1N4148 D109 D108 1N4148 D114 1N41
NSTR VRotS HROT 24 P201 10k 1 2 3 R227 100k 7 100n 3 2 1 R224 4k7 R L R223 4k7 R221 4k7 100n C212 R206 R208 22k R222 4k7 C213 68u 16V LM358b C216 SOUND INPUT 220n IC201/B X204 C217 68u 16V 100n C203 5 6 C204 180k R205 BC558 T202 470n C215 470n C214 39k 6 2 8 4 3 14 R-in Vol-R Vol-L L-in 100k R209 2 4 33k R212 8 C207 47u 25V 7 10 TDA7053A IC202 5 IC201/A LM358a R211 43k 100E R213 + - R-out + - 9 13 12 16 C209 47u 25V L-out 1
Philips Semiconductors Circuit description of CCM420 monitor 5. Application Note AN97032 PARTS LIST The parts list is only for the main board. No parts are listed to complete the CCM420 monitor. 5.1 Resistors and potentiometers Note: Were no type is mentioned a SFR25 is used.
Philips Semiconductors Circuit description of CCM420 monitor Number R132 R133 R135 R136 R137 R138 R139 R140 R141 R142 R143 R144 R145 R146 R147 R148 R149 R150 R151 R152 R153 R154 R155 R156 R157 R158 R159 R161 R162 R163 R164 R165 R166 R167 R168 R169 R170 R171 R172 R173 R175 R176 R177 R178 R179 R203 R204 R205 R206 R207 R208 Value 1k 270E 24k 150k 1M8 1M5 36k 1k 270k 270k 1M5 1M5 8k2 220k 220k 1k 3k3 100k 13k 1k 100E 47k 120E 3E3 10k 120E 1k 10k 150k 150k 4E7 100E 3k3 10k 1k 1k 47k 1M 120k 1k 2k2 39k 11k 47k
Philips Semiconductors Circuit description of CCM420 monitor Number R338 R339 R340 R341 R342 R343 R344 R345 R346 R347 R348 R349 R350 R351 R352 R353 R354 R355 R356 R357 R358 R359 R360 R361 R362 R363 R364 R365 R366 R400 R403 R404 R405 R406 R407 R408 R409 R410 R411 R412 R413 R414 R415 R418 R419 R420 R421 R422 R423 R424 R425 Value 1k5 27k 10k 100E 100E 100E 56k 100E 100E 10k 10k 270E 5k23/1% 732E/1% 22k 8k2 100E 100E 12k 4k7 6k8 220E 27k 6k8 2k2 10k 4k7 4k7 100E 100E 120E 10k 47E 2E7 220E 33E 680E 100E 18k 47
Philips Semiconductors Circuit description of CCM420 monitor 5.
Philips Semiconductors Circuit description of CCM420 monitor Number C204 C211 C212 C214 C215 C216 C304 C306 C308 C309 C310 C312 C314 C315 C316 C317 C318 C319 C320 C321 C322 C324 5.
Philips Semiconductors Circuit description of CCM420 monitor Number T405 T406 T407 T408 T409 T410 T411 T412 5.
Philips Semiconductors Circuit description of CCM420 monitor 5.5 Number IC1 IC2 IC3 IC101 IC102 IC201 IC202 IC301 IC302 IC303 IC304 IC305 IC401 5.6 Number L1 L2 L3 L4 L5 L6 L7 L101 L102 L401 L402 L403 TR1 TR2 TR101 TR401 5.7 Integrated circuits Type TDA8380A L7812 78L05 UC3843P LM393 LM358 TDA7053A PCE8582C-2E PCE8582C-2E TDA8447 P83C181 TDA4854 TDA8354 Remarks (to heatsink) see appendix 7 (to heatsink) Wire-wound components Type/Value TU305b2 10µ 10µ 10µ 10µ 10µ 10µ 6µ8 10µ CU20 / 1.
Philips Semiconductors Circuit description of CCM420 monitor XT301 Connectors Number J3 J301 J302 X1 X2 X201 X202 X203 X204 X205 X301 X302 X303 X304 X305 X306 X307 X401 X402 Crystal 12MHz Type HEADER 3p HEADER 2p HEADER 2p STOCKO 3p STOCKO 4p STOCKO 3p STOCKO 3p STOCKO 3p STOCKO 3p STOCKO 3p STOCKO 14p STOCKO 4p STOCKO 8p STOCKO 4p STOCKO 6p STOCKO 12p STOCKO 4p STOCKO 7p STOCKO 3p Remarks Application Note AN97032 remove middle pin remove middle pin remove middle pin Heatsinks: The areas of the hea
Philips Semiconductors Circuit description of CCM420 monitor 6. Application Note AN97032 PRINTED CIRCUIT BOARD LAYOUT On the next pages the following drawings can be found: − component placement with position numbers as seen from the component side; − component placement with values as seen from the component side; − SMD placement with position numbers as seen from the solder side; − copper pattern of printed circuit board. The board dimensions are: 388 mm long by 250 mm wide. 6.
D17 C204 T202 R205 R207 R206 R208 IC201 C209 C207 R204 R215 + T203 X204 R214 R203 R365 D303 + R319 C303 IC305 + IC302 X303 R312 R363 C323 C311 C314 R325 R301 R326 R302 R316 R317 + C302 R307 R308 R334 R337 D301 R336 C312 IC304 R315 XT301 SW1 + C301 C307 R458 R413 R314 R313 R321 R323 R324 R322 R320 R332 R331 R362 R361 T304 R360 X307 T302 + C431 R410 R409 R408 R435 D409 R436 C422 T415 T417 T409 T413 T411 T407 R434 R439 R425 R431 R428 TR401 T1 R421 R420
558 470n 25V 100E NFR25H 47u+ 548 4k7 100E NFR25H 22 33k 47u 680 25V 56k 25V + 47u 1k Bicolor LED 680 1k8 47u 25V 220n 558 180k 56k 39k 22k LM358 + 100n 4148 12k 6k8 4k7 68u 16V + 68u 16V 100E TDA4854 100E 100E 4k7 Mains- Switch st.-8p 22k 4k7 10E 10k 10n 4u7 63V 68u 16V + 100E 12MHz P83C181 10E 68uPCE8582C 2E 16V + 100E 100E 4E7 2k2 C5V6 558 8k2 68u 2n2 16V + 10n 10 2k2 548 6k8 27k st.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 Location of SMD parts. Control part: R340 R353 R350 C317 C318 R339 R344 C321 This drawing shows the SMD components underneath the deflection controller TDA4854 seen from the solder side. R351 C322 EHT and focus part: SMD parts seen from solder side: D131 • D131: located underneath D132. • R112, R119, C108, C134, C136: located underneath IC101. • R117: located underneath IC102.
Philips Semiconductors 37 RED Application Note AN97032 GREEN Circuit description of CCM420 monitor
Philips Semiconductors Circuit description of CCM420 monitor 7. Application Note AN97032 ALIGNMENT PROCEDURE This alignment procedure is written for a complete CCM420 monitor: main board, key board, video board and CRT. In case of failure refer to chapter 8: debugging procedure. 7.1 Equipment Video generator Quantum Data QD903: formats ranging from 640 x 400 to 1280 x 1024 pixels; refresh rates ranging from 60 to 85 Hz.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 18. Adjust grid 2 such that the brightest colour reaches the required level for a total luminance of 1.0 Nit. Note: the required level for each of the three colours for a total luminance of 1.0 Nit is: Red: 0.3 Nit; Green 0.59 Nit; Blue: 0.11 Nit. 19. Then decrease the cathode voltage of the two remaining colours to their respective brightness for a total brightness of 1.0 Nit. 2 20.
Philips Semiconductors Circuit description of CCM420 monitor 8. Application Note AN97032 DEBUGGING PROCEDURE The debugging of the main board is described in a complete monitor set-up fitted with CRT M41EHN323X145 and video amplifier board PR37981. Only the most common failures are described. 1. No picture: Check: 185 Volt output of SMPS; all other output voltages of the SMPS (+11 V; +18 V; -18 V; +78 V; limits for all output voltages +/- 10 %); +12 Volt (+/- 0.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 6. No vertical deflection: Check: vertical drive signals of TDA4854; flyback supply voltage; vertical deflection output stage; 7. EHT not present: Note: the horizontal deflection stage must be operating! Check: all fusible resistors R114, R115, R156 and R164; duty-cycle of PWM output pin 6 of IC101 (< 90 %); base drive signal of T109 X-ray output pin 7 of IC102 8.
Philips Semiconductors Circuit description of CCM420 monitor 9. Application Note AN97032 REFERENCES 2 AN97072 Pin description of TDA4854 I C controlled ASDC. AN97039 Video amplifier board with TDA4885 and CR6927. ETV/AN97002 Low power and low cost horizontal drive circuits with U15 core. Data sheets: TDA4854 2 I C-autosync deflection controller for PC/TV monitors Date of issue: 1997 Apr. 16 TDA4885 2 150 MHz video controller with I C-bus Date of issue: 1996 Mar.
Philips Semiconductors Circuit description of CCM420 monitor APPENDIX 1 Application Note AN97032 2 STARTING VALUES OF I C REGISTERS 2 In the following tables the starting values for the I C registers and the switch position are shown. 2 These values should either be present in the EEPROM or loaded via the I C software control program in the applicable device.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 TDA4885 control registers and switch positions: Register Value Switch 0/1 Contrast 58 PEDST 1 Brightness 16 DISO 0 OSD Ctrst 15 DISV 0 Gain R 60 FPOL 1 Gain G 55 Gain B 35 Black level R 190 Black Level G 190 Black Level B 190 APPENDIX 2 VIDEO DRIVE LEVELS To display a grey level of X Nit the necessary drive level at the input of the video stage can be calculated according to the following
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 Note: the minimum and maximum frequencies in the formulas should be inserted in ‘kHz’. Tolerance taken in account is 3 % for the IC, 2 % for the horizontal oscillator capacitor and 1 % for the resistors R350 and R351. R350 = R' 351 = 78 kΩ F min + 0.0012 ´ F min 2 78 kΩ F max + 0.0012 ´ F max 2 R 351 = R 350 ´ R' 351 ´ 0 .8 kΩ R 350 - R' 351 Note : R’351 does not really exist; this is only for the calculation.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 First line: Red Black level (RB), Green Black level (GB), Blue Black level (BB), OSD contrast (OC), Colour temperature (CT) Second line: Red gain (RG), Green gain (GG), Blue gain (BG), CRT grid 2 (G2) Third line: momentary setting of actual control Fourth line: name of actual control function. Fourth level: Horizontal control.
Philips Semiconductors Circuit description of CCM420 monitor APPENDIX 6 Application Note AN97032 2 I C CONTROL MENUS This software can be used in a debugging phase of the hardware for instance in case no µController is available (mind the setting of the S-correction switches).
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 LOADING DEFAULT SETTINGS: Loading Application Default settings can be performed by activating the “Load Application Settings” Menu Item within the “File”-Menu. When the IC’s are situated within the CCM420 monitor, it is also possible to load the actual default settings of the Monitor, which are saved within the EPROM of the monitor.
Philips Semiconductors Circuit description of CCM420 monitor 2 I C-CONTROL MENU OF THE VIDEO CONTROLLER IC TDA4885 2 I C-CONTROL MENU OF THE D-A CONVERTER IC TDA8447 APPENDIX 7 CICT IC NEWSLETTER NO.
Philips Semiconductors Circuit description of CCM420 monitor Application Note AN97032 P83Cx81 will not be taken to RFS CICT has decide not to proceed with plans to make available the P83Cx81 family of DDC monitor microcontrol2 lers. This family was originally intended to serve the market for DDC monitors which were I C bus controlled. The P83Cx81 was positioned as a cost down version of the P83Cx80 family.
