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Hyundai ImageQuest P990+ Technical & Service Manual

Multiscanning color monitor
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P990+
Multiscanning Color Monitor
TECHNICAL SERVICE MANUAL

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Summary of Contents for Hyundai ImageQuest P990+

  • Page 1 P990+ Multiscanning Color Monitor TECHNICAL SERVICE MANUAL...

  • Page 2: Safety Precaution

    Safety Precaution WARNING Service should not be attempted by anyone unfamiliar with the necessary precautions on this monitor. The followings are the necessary precautions to be observed before servicing. 1. Always discharge the high voltage to the CRT conductive coating before handling the CRT. The picture tube is highly evacuated and if broken, glass fragments will be violently exploded.

  • Page 3: Product Safety Notice

    P990+ Technical Service Manual X-Rey Radiation Precaution 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must be under the specified limit. The nominal value of the high voltage of this monitor is 26KV–0.5KV at zero beam current(minimun brightness) under a 120V AC power source.

  • Page 4: General Information

    General Information 1. Description This 19"(18" viewable) color display monitor is operated in R, G, B, drive mode input. 2. Operating instructions 2-1. External instructions 2-2. Front Power LED,Power Switch, menu key, Select Key, UP/Down Key 2-3. Rear Signal : 15 Pin D-Sub, BNC (Option) Power : 3-pole receptacle 2-4.

  • Page 5: Control Description

    P990+ Technical Service Manual Control Description Front View Power Switch Power LED menu Key UP Key Down Key Select Key Video Input Signal 700m V Recommended signals are shown below. • Signal : 64 level gray scale • Video Signal Video Level : 0 to 700mV •...

  • Page 6: Timing Table

    Timing table Horizontal 1024 1024 1152 1280 1280 1600 53.674 68.677 Frequency 50.626 60.023 91.146 93.75 31.469 67.500 79.976 16.66 Period(T1) 31.778 19.752 18.631 14.561 10.971 10.677 14.815 µs 12.504 1.58 1.138 1.219 1.026 1.016 Sync Width(T2) 3.813 0.948 µs 1.185 1.067 1.975...
  • Page 7 P990+ Technical Service Manual Video Input Terminal A 15 Pin D-sub connector is used as the input signal connector. Pin and input signals are shown in the table below. Pin Description SIGNAL SEPERATE COMPOSITE PIN NO. SYNC SYNC GREEN GREEN BLUE BLUE GROUND...

  • Page 8: Connecting With External Equipment

    Connecting with External Equipment Cautions Be sure to turn off the power of your computer before connecting the monitor. --7--...

  • Page 9: Theory Of Operation

    P990+ Technical Service Manual Theory of Operation 1. Power Supply The AC voltage is from 90 ~ 264Vac. The conducted noise is filtered by Line filter(LP1), Coil(LP2), X and Y Capacitor(CP01,CP02,CP03,CP06). NTC1 reduces the inrush current. Bridge diode BD1 converts AC to DC. And this DC voltage is charged CP04.

  • Page 10: Theory Of Circuit Operation

    Theory of Circuit Operation Micro Controller System The micro controller system is composed of the MCU, the serial E PROM, key control circuit. * Refer to the Schemathics in the Page 61 (Schematic Diagram 4-2) The MCU (ICM01, WT62P1) mainly provides the following functions: 1) Detect the system input signals and send proper control signals via general purpose I/O pins.
  • Page 11 P990+ Technical Service Manual DPMS Mode The power supply supports DPMS function. Its operation is shown in the below table. V MCU H MCU MODE 205V 6.3V 130V -12V 12VA 12VB -Sync NORMAL O / O 205V 6.3V 130V -12V X / O STAND-BY 205V...
  • Page 12 High Voltage Control Circuit: High Voltage Control Circuit is working basically by using switching theory with the main component ICF01 (KA3843). Circuit operating theory is explained as following: * Refer to the Schemathics in the Page 63 (Schematic Diagram 4-4) 1) When Power ON and the Vcc DC level of pin7 of ICF01 (KA3843) exceeding 8.4V, ICF01 starts to work and the oscillate frequency is decided by RF04, CF04.
  • Page 13 P990+ Technical Service Manual 1) The small signal video amplifier controlled by MCU via I C bus for the features of contrast(main gain control), 3 sub cut-off controls(R Cut-off, G Cut-off, B Cut-off), clamping pulse source and the clamping pulse width. 2) The OSD mixer processes the OSD-R,OSD-G,OSD-B on Pin13,14,15 and the OSD Blk input on Pin1 and the OSD contrast is controlled by MCU via I C bus.
  • Page 14 Horizontal Drive /B+ Drive circuit H/B+ Drive signal (square pulse) is generated from ICH01 pin 8/6. The H Drive signal is switching QH05. and H-drive trans amplify QH06’s base drive current. B+ Drive signal is amplified by push pull (QH02, QH03) amplifier, this amprified signal the switching B+ voltage is supplied horizontal deflection coil though coil(TH02) * Refer to the Schemathics in the Page 63 (Schematic Diagram 4-4) Brightness Blanking Reset Control CRT...

  • Page 15: Troubleshooting

    P990+ Technical Service Manual Trouble Shooting Symptom Check 1. (OK , NO Check 2. (OK , NO Action 1) Check CP04 voltage 1) Check FP01 (short?) Change 1. No power 2) Check BDP01 (diode test) Change 3) Check input voltage Change 2) Check ICP01 1) Check RP09...
  • Page 16 Symptom Check 1. (OK , NO Check 1. (OK , NO Action 1) Check ICI01 video input 1) Check signal cable 1) Check video input (CRT B/D 4. No video (ICI1 #1, 3, 5/#7, 9, 11 wave form) (CNC2 #1, 3, 5 wave form) 1) Check signal cable 2) Check ICI01sync input (ICI01 #12, 24/#13, 23 wave form...

  • Page 17: Adjustment Method

    P990+ Technical Service Manual Adjustment Method 1. Caution Extremely high voltage are present in the area around the FBT and the anode high voltage lead. Do not touch QF01 or its heatsink as high voltage is present on these components. 2.
  • Page 18 4-4 Color setting Adhere color Analyzer sensor closely to CRT center. Video mode : 106kHz, 1600 mode. 1. Color Temperature 9300°K setting - Select " 9300 " by using the menu key. 1) Cut-off Setting • Video signal : Back Raster Pattern •...
  • Page 19 P990+ Technical Service Manual 5. X-Ray Protection Test - In any signal input condition, short RH03 (main board) by using the JIG. - At this moment, check out whether raster disappears. - Remove the JIG. - After the power switch of the set off and on, check out proper working 6.
  • Page 20 Specifiaction SIZE 19"(18" viewable) Diagonal Dot Pitch 0.26 mm Non-glare Non-glare, Anti-Static Signal R.G.B Analog Input Connector 15 pin D-Type (Basic), BNC (Option) 30KHz ~ 95KHz(Automatic) SYNC 50 Hz~150 Hz(Automatic) 202.5 MHz(-3dB) Video Bandwidth Display 360X270mm (Max. Over Scan) Area(HXV) Color 1600X1200 (93.75kHz/75Hz) Resolution H/V Size, H/V Position, Pincushion, Trapezold, Parallel,...
  • Page 21 P990+ Technical Service Manual Critical Parts Specification TDA4841 FEATURES Concept features • Full horizontal plus vertical autosync capability • Extended horizontal frequency range from 15 to 130kHz • Comprehensive set of I C-bus driven geometry adjustments and functions, including standby mode •...
  • Page 22 EHT compensation BLOCK DIAGRAM via vertical size VCAP EHT compensation via horizontal size 22 k 1.2V VSMOD HSMOD EWDRV VREF VAGC 23 24 EW-OUTPUT EHT COMPENSATION V-SYNC INPUT VERTICAL OUT2 V-OUTPUT V-SYNC V-sync H-SIZE AND V-SIZE AND POLARITY OSCILLATOR H-PINCUSHION V-LINEARITY INTEGRATOR (TTL level)

  • Page 23: Pin Configuration

    P990+ Technical Service Manual PIN CONFIGURATION Vertical sync slicer and polarity correction Vertical sync signals (TTL) applied to VSYNC (pin 14) are sliced at 1.4V. The output signal of the sync slicer is integrated on an internal capacitor to HFLB FOCUS detect and normalize the sync polarity.
  • Page 24 This can, for instance, be a range from 15.625 to 90kHz with all tolerances included. Whitout a horizontal sync signal the oscillator will be free-running at f mix . Any change of sync conditions is detected by the unternal coinidence detector. A deviation of mpre than 4% between horizontal sync and oscillator frequency will switch the horizontal section into search mode.
  • Page 25 P990+ Technical Service Manual KA2142 Vcc(H) Vcc(L) FLYBACK GENERATOR Vin(-) DRIVE OUTPUT VOUTPUT STAGE STAGE Vin(+) THERMAL SHUTDOWN Table1. Pin Configurations Configurations Pin No Symbol I / O Inverting Input Vin ( - ) Supply Voltage Vcc ( L ) Flyback Generator F .
  • Page 26 BA7657S BNC (OPTION)-BLOCK DIAGRAM Vcc2 Vcc1 (12V) (5V) LATCH Vcc1 RIN 1 220 F Vcc2 ROUT Vcc1 0.01 F RIN 2 220 F Vcc2 GOUT Vcc1 0.01 F GIN 1 Vcc1 GIN 2 Vcc2 220 F BOUT Vcc1 0.01 F BIN 1 0.15 F Sync...

  • Page 27: Block Diagram

    P990+ Technical Service Manual BLOCK DIAGRAM --26--...
  • Page 28 PINNING DESCRIPTION DESCRIPTION B Input 1 V Input 2 V Output G Input 1 R Output BNC/D-SUB R Input 1 COMPOSITE SYNC OUTPUT B Input 2 G Output G Input 2 B Output H Output R Input 2 H Input 2 V Input 1 H Input 1 LM2413...
  • Page 29 P990+ Technical Service Manual STR-F6654 BLOCK DIAGRAM START O.V.P LATCH O.S.C REG. Vth (1) O.S.C T.S.D Comp.1 O.C.P/F.B Iconst Vth(2) Comp.2 Rconst+ Rconst- Function of Terminal Terminal No. Symbols Description Functions Input of overcurrent detection signal and O.C.P/F.B Overcurrent/Feedback terminal constant voltage control signal Source terminal MOS FET source...

  • Page 30: Pin Description

    WT62PI PIN DESCRIPTION PIN CONNECTIONS PURITY UNLOCK V-CONVERGENCE 22 ABL PWM2 PWM1 H-CONVERGENCE 23 Key-in PWM3 PWM0 24 SDA1 Reset RESET/3V3 PD5/PWM4 25 SCL1 PD4/PWM5 26 CS5 PD3/PWM6 OSC0 27 CS4 OSC0 PD2/PWM7 OSC1 28 CS3 PD1/HOUT OSC1 WT62P1-N40 SUS/Stand-by 29 CS2 PB5/SDA2 PD0/VOUT...
  • Page 31 P990+ Technical Service Manual DESCRIPTION The Microchip Technology Inc. 24LC04B/08B is a 4K-or 8K-bit Electrically Erasable PROM. The device is organized as two or four blocks of 256X8 bit memory with a two wire serial interface. Low voltage design permits operation down to 2.5 volts with standby and active currents of obly 5µA and respectively.
  • Page 32 KA3842B/43B CURRENT MODE PWM CONTROLLER •OPTIMIZED FOR OFF-LINE AND DC TO DC CONVERTERS •LOW START-UP CURRENT(<1mA) • AUTOMATIC FEED FORWARD COMPENSATION • PULSE-BY-PULSE CURRENT LIMITING • ENHANCED LOAD RESPONSE CHARACTERISTICS • DOUBLE PULSE SUPPRESSION • HIGH CURRENT TOTEM POLE OUTPUT •...
  • Page 33 P990+ Technical Service Manual LM358 LM358 OUTPUT A OUTPUT B INVERTING INPUT A NON INVERTING INPUT A INVERTING INPUT B NON INVERTING INPUT B Voltage Regulator ICs Max. Type No. Function Package Vo(V) Vin(V) KIA7805P/PI OUTPUT KIA7806P/PI COMMON INPUT KIA7808P/PI TO-220AB KIA7809P/PI KIA7810P/PI...
  • Page 34 MTV021 FEATURES • Horizontal SYNC input up to 130KHz. VSSA • On-chip PLL circuitry up to 96 MHz. • Programmable horizontal resolutions up to 1524 dots ROUT per display row. • Full-screen display consists of 15(rows)by 30(columns) GOUT characters. • 12 X 18 dot matrices per character. VDDA BOUT •...

  • Page 35: Functional Block Diagram

    P990+ Technical Service Manual SYMBOL FUNCTIONAL BLOCK DIAGRAM Cathode Reference Cathode Reference 1. Reference 2. Anode 2.5V ref 3. Cathode Anode Anode (A) LP SUFFIX INTERNAL SCHEMATIC CASE 29 Component values are nominal (TO-92) Power Transistor RATING SYMBOL 2SC5411 UNIT Base Breakdown Voltage 1500 Emitter Sustaining Voltage V...
  • Page 36 TRANSISTORS MAX. RATINGS CE(SET) Type Package (mA) (mW) (mA) (mA) KSC945CY 0.15 TO-92 -0.3 -100 TO-92 KS733CY -150 1.5W TO-92 KSP45 -2.0 -1.5A TO-92 KSA928AY KTA200Y -500 -0.25 -100 -10-30 TO-92 KSA1013AY -160 -1.5 -500 TO-92 KSA2328AY 1.5A TO-92 KRC102M -0.3 -100 -0.88...
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  • Page 67 "              $%&'()'*+$,&-./01        $# +$,&-./01...
  • Page 68   ++   + +    + +   ++...
  • Page 79 Exploded View 6253063406 PAD,SPONGE(T=20.0) SOFT POLYURETHANE FOAM 5004000199 SCR-TT.WAL 3*8 MSZPC 6201281100 SWIVEL UPPER HIPS 6201281200 SWIVEL BASE HIPS 6120044600 SPTE T=0.3 SHLD-PL, FENCE CRT ASSY 6124035700 H-SINK VIDEO Al050P T=1.2 B4218500201C RETAINER COIL SCREW,TRS(+) 5x28 MSZPC 5003000045 MSZPC 5004000187 SCREW,TT2 BIN(+) 4x14 MSZPC MSZPC 6110178900...

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