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B790+(C17R06091) F790D(C17F06091)
Multiscanning Color Monitor

TECHNICAL SERVICE MANUAL

B790+/F790D Technical Service Manual

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. Use shatter proof goggles and keep picture tube away from the bare body while handling. 2. When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in place, such as nonmetallic control knobs, insulating covers, shields, isolation resistor capacitor network etc. 3. Before returning the monitor to the customer, always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as signal connectors, terminals, screw heads, metal overlays, control shafts etc, to be sure the monitor is safe to operate without danger of electrical shock. Plug the AC line cord directly into a AC outlet (do not use a line isolation trasformer during this check.). Use an AC voltmeter having 1500 ohm per volt or more sensitivity in the following manner : Connect ground(water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC Voltage across the combination of 1500 ohm resistor and 0.15 capacitor. Reverse the AC plug at the AC outlet and repeat AC voltage measurements for each exposed metallic part. The Voltage must not exceed 0.3 volts RMS. This corresponds to 0.2 milliamp AC. Any value exceeded this limit constitutes a potential shock hazard and must be corrected immediately.

AC VOLTMETER

0.15µF Good earth ground such as the water pipe, conduit, etc Place this probe on each exposed metallic part. 0.15µF

P1500 ohm 10 WATT

INSTRUCTIONS TO USER This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instruction, may cause interference to radio and television. It has been tested and found to comply with the limits for the specifications in Subpart J of Part 15 FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures. · reorient the receiving antenna · relocate the computer with respect to the receiver · plug the computer into a different outlet so that computer and receiver are on different branch circuits.

--1--

X-Ray 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 26.0KV 0.5KV at zero beam current(minimun brightness) under a 120V AC power source. The high voltage must not(under any circumstances) exceed 29KV. Each time a monitor requires servicing, the high voltage should be checked. It is recommended the high voltage be recorded as a part of the service record. It is important to use an accurate and reliable high voltage meter. 2. This monitor is equipped with a protection circuit which prevents the monitor from producing excessively high voltage. Each time the monitor is serviced, the protection circuit must be checked to determine that the circuit is properly functioning. 3. The only source of X-RAY RADIATION in this monitor is the picture-tube. For continued X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as specified in the parts list. 4. Some parts in this monitor have special safety-related characteristics for X-RAY RADIATION protection. For continued safety, parts replacement should be undertaken only after referring to the product safety notice.

PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this monitor have special safety-related characteristics. These characteristics are often not evident from visual inspection. Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features identified by " ! " in the replacement parts list and schematic diagram. For continued protection, replacement parts must be identical to those used in the original circuit. The use of substitute replacement parts which dose not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire, X-RAY RADIATION or other hazards.

PRODUCT CDRH NOTICE
Electrical potentiometers which is marked as caution " ! " in parts list are crititial components of safety & CDRH. Therefore, for continued protection, replacements parts must be used it which is used in original PCB ASS'Y.

--2--

B790+/F790D Technical Service Manual

General Information
1. Description
This B790+/C17R06091 17" (15.7" viewable) color display monitor is operated in R, G, B, drive mode input. This F790D/C17F06091 17" (16" viewable) color display monitor is operated in R, G, B, drive mode input.

2. Operating instructions
2-1. External instructions 2-2. Front Power Switch, Menu, Select, Down( ), Up( ), DPMS (Power) LED. 2-3. Rear Input connection, (AC & SIGNAL CABLE) 2-4. Service Instruction(internal controls) High-Voltage, Focus 2-5. OSD Controls Contrast, Brightness, H/V Position, H/V Size, Pincushion, Trapezoid, Parallelogram, Pin Balance, Cerner Top/BTM, H/V Moire, Degauss, Color Control, Recall, OSD H/V Position, H/V Linearty, Language, Information, Rotation

3. Electrical Characteristics
3-1. 100-240 Volt 60Hz/50Hz for use all over the world. This power supply is a 100 Watt multi output SMPS for monitor. 3-2. Video Input : 0.7V p-p analog signal(at 75 ohm terminated) Bandwidth : 202MHz(Max. Dot Rate) Polarity : Positive 3-3. Horizontal Drive Level : TTL High : 2.4V min Low : 0.4V max Polarity : Negative or Positive Frequency : 30KHz 97KHz Timing Limits : Pulse width (0.5µs Thp 5.5µs) 3-4. Vertical Drive Level : TTL High : 2.4V min Low : 0.4V max Polarity : Negative or Positive Frequency : 50Hz 150Hz Timing Limits : Pulse width (0.02ms Tvp 0.2ms) 4. Model Description Tco'95/99 CRT Type : - SAMSUNG SDI B790+ (C17R06091) : M41QAQ261X132 F790D (C17F06091) : M41QCJ761X172 - L.G ELECTRONICS F790D (C17F06091) : M41QEE903X02

--3--

Control Description
Front View

Power LED

Power Switch

Video Input Signal
Recommended signals are shown below. · Video Signal Video Level : 0 to 700mV Polarty : Positive Video Input : RGB separated Analog level Sync input : H-Sync ; TTL level V-Sync ; TTL level · Waveform Video input(R, G, B)
4 3 2 1 0 63 62 61 60 59 700mV

· Signal: 64 level gray scale · Linear stepping: (11.1mV-64 Steps)

· H-Sync
ACTIVE (4)

· V-Sync
ACTIVE (4)

Front Porch (T5)

Period (T1) Back Porch (T3) Sync Width (T2)

Front Porch (T5) Period (T1)

Back Porch (T3) Sync Width (T2)

--4--

B790+/F790D Technical Service Manual

Timing Table
No. 1 2 3 4 5 6 7 8 9 Resolution 720 x 400 640 x 480 800 x 600 1024 x 768 1024 x 768 1152 x 864 1280 x 1024 1280 x 1024 1600 x 1200 Horizontal Frequency 31.5 KHz 50.6 KHz 53.7 KHz 60.0 KHz 68.7 KHz 67.5 KHz 80.0 KHz 91.1 KHz 93.8 KHz Refresh rate 70 Hz 100 Hz 85 Hz 75 Hz 85 Hz 75 Hz 75 Hz 85 Hz 75 Hz

Note: Even if the monitor detects the input timing as a factory preset mode, the size Note: Even if the monitor detects the input timing as a factory preset mode, the size and position and position may notbe set as desired. Check the input timings are under the specifications and may not be able to be able to be set as desired. Check the input timings are under the specifications and adjust the image as you want. adjust the image as you want. For better quality of display image, use the timing and polarity shown in the table above. Please see For better quality of display image, use the timing and polarity shown in the table above. Please see your video your video card user's guide to ensure compatibility. card user's guide to ensure compatibility.

--5--

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 PIN NO.

SEPERATE SYNC RED GREEN BLUE GROUND DDC RETURN RED GROUND GREEN GROUND BLUE GROUND +5V (NOT USED) LOGIC GROUND GROUND SDA H-SYNC V-SYNC(VCLK) SCL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

D-Sub miniature connector

--6--

B790+/F790D Technical Service Manual

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

--7--

Theory of Operation
1. Power Supply
The AC voltage range is from 100 - 240V AC. The conducted noise is filtered by Line filter (LP01), X and Y Capacitor(CP01,CP02,CP03,CP11) NTC01 reduces the inrush AC to DC , And this DC Voltage is charged CP05. The ICF01 (MC33260)IC is a PFC Circuit. QF01 Drive Signal is generated from ICF01 Pin 7. The STR-F6654 is a hybrid IC (ICP01) with a built in control IC and Mosfet. The start-up circuit starts and stops the operation of the control IC by detecting the voltage appearing at the VIN(PIN4) At start-up of the power supply, CP12 is charged though the start-up registor RP02 When theVIN(PIN4) voltage reaches 16V, the control circuit starts operation by the function of the start-up circuit (In normal state, VIN of ICP01 is supplied by CP12 dc voltage. In Off Mode, Vin of ICP01 is supplied by CP10 dc voltage.) The switching frquency is locked to Horizontal scan frequency by horizontal flyback pulse from sync trans transfomer(LP03). The output pulse width is controled by currentbof OCP/F.B(PIN1). The SMPS output has +185V,+80V,+15V,+13V,-13V,+7. The power supply supports the DPMS function. Its operation is shown in the table below. MODE NORMAL STAND-BY SUSPEND OFF H-Sync O X O X V-Sync O O X X MCU PIN 9 H L L L QP07 ON OFF OFF OFF

2. DPMS

3. Signal Processing and MCU Control

When the H and V sync are input to MCU, MCU can measures the H and V frequency to detect the video mode. MCU has digital to analog converter (DACs) control function like ,Brightness, Rotation, H/V-Lin, Degaussing and MCU can control ,H/V Size, H/V Position Pincushion, Trapezoide, Parallel, Corner TOP/BTM, Pin balance, H/V Moire, OSD H/V-Position, R/G/B Cut off, R/G/B drive by I2C Bus line. The operation of MCU is shown in the table below.

B790+(C17R06091) H-Freq. [kHz] H < 36 36 40 46 51 62 66 71 85 H < 40 H < 46 H < 51 H < 62 H < 66 H < 71 H < 85 H < 95 L H H H H H H CS 1 PIN 30 L CS 2 PIN 29 L H H L L H H H H CS 3 PIN 28 L L H L H L L H H CS4 PIN 27 L L L L L L H L H

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B790+/F790D Technical Service Manual

F790D(C17F06091)
H-Freq. (Khz) H < 36 36 H < 40 40 H < 46 46 H < 51 51 H < 55 55 H < 62 62 H < 66 66 H < 71 71 H < 85 85 H < 95 CS 1 PIN 30 L L L H H H H H H H CS 1 PIN 29 L H H L L L H H H H CS 1 PIN 28 L L H L H H L L H H CS 1 PIN 27 L L H H L H L H L H

4. Horizontal Deflection

TDA4841(ICH01) is an I2C auto sync deflection controller for H/V sync and drive processing. All function are controlled by I2C bus. When H-sync applied, the internal oscillator is automatically locked. The duty cycle of H-output pulse(ICH01 pin 8 ) is 45%(at 31.5 KHz) Horizontal B+ Drive Signal is generated from ICH01 pin 6. QH08 and TH01 are used to drive the H-output transistor (QH09). QH09 is turned on, it conducts current through the deflection yoke on the right hand side of the screen. This current comes from the S correction capacitors (CH27,CH29,CH32,CH34,CH64), which have a charge equal to the effective supply voltage. When the QH09 is opened up, the damper diode(DH11) allows current for left hand side of the screen to flow back through the deflection yoke to the S capacitors. The flyback capacitor (CH23) determines the size and length of the flyback pulse. The S capacitors correct outside versus center linearity in the horizontal scan. QH11,QH12,QH13,QH22 select the value of S capacitors. B+ Drive singal is amplifier by push pull(QH24,QH25) amplifiered, this ampifiered signal the switching . B+ Voltage is suppied horizontal deflection coil though coil(TH03). High Voltage Control circuit is working basically by using switching therory with the main component ICH03(KA3843). When power ON and the VCC DC level of pin 7 of ICH03 exeeding 8.4V, ICH03 starts to work and the oscillate frequency is decided by RH24,CH11. ICH03 is working normally the output square wave of pin6 will turn on QH04. The ON/OFF cycle of QH04 will make the primary of FBT acted like a swiching power transformer AFC signal is differntial by CH10, RH04 and connected with CH11in order to force ICH03 in synchronization. This high voltage will be always synchronized with horizontal deflection. Usually loading change will cause unstable condition, so a high voltage feed back system is designed to maintain the stability of the high voltage circuit. This feed back system is started from voltage sensor on the pin12 of the FBT. This sensor voltage compares with voltage of the OP1 via the butter(OP2) of ICH02(LM358) and returns to ICH03. A feed back reference high voltage circuit that consists of RH50 ,VRH01 and RH52 to adjust the high voltage. During the period the horizontal frequency is changed , for example,H-Unlock will be from low to high (the time frequency changes). H-Unlock is controlled by pin 17 of ICH01(TDA4841). After differential circuit that consists of RH43 and RH44, the signal will turn QH03 on When frequency changed and reduce the high voltage by paralleling with RH50,VRH01,RH52. Dynamic Focus is user to get perfect focusing of each dot on the screen. ICH01 , pin 32 outputs a parabolic waveform(H+V Focus) QH06, QH17 and QH18 amplify this focus signal.

5. Hign Voltage and Focus

--9--

6. Vertical Deflection 7. X-ray Protection

Vertical defiection saw-tooth waveform is provided by ICH01 pin 12,13(VOUT1,2) and amplified by ICV01(KA2142).

X-Ray High Voltage Protection circuit is to get a DC level voltage by utilizing the output waveform of FBT pin 4 to pin 7(GND) via a rectifier consists of DH07,CH36 This DC level voltage inputs to the pin2(X-Rey) of ICH01 TDA4841. The preset X-Rey protection voltage is 5.2V. if the high voltage is higher than the preset voltage, the DC level voltage input into the pin 2 will also be higher than 6.4V. It also means the HDRV signal is off, then horizontal deflection is off and the high voltage is also off.

8. Video Amplifier and OSD Interface

KA2506-01(ICC01) is a wide band video amplifier with three matched video amplifiers, contrast control, OSD interface, OSD contrast control, drive controls, blanking gate and clamp gate ICC01 is controlled by I2C bus. H blank signal is applied to Pin 19. During blanking all three outputs are thrown to the pedestal level. A insert H-Sync is used to a clamp signal. The signal is applied to Pin 18. Three OSD inputs (Pin 1,2,3 of ICC01) are TTL compatible and typical bandwidth is 80MHz. A fast commutate pin is provided to select either the video or the OSD inputs as a source for the amplification. OSD contrast controlled by I2C bus. MTV021(ICC02) is a high performance HCMOS device designed to interface with a micro controller unit (ICM01) to allow colored symbols or characters to be displayed on the monitor screen. The output stage is made of 3-channel power amplifier (ICC03, LM2435T). The output capable of 40 volt swing in less than 7 n Sec. The three cathodes are AC coupled to the video amplifiers. The DC level on each cathode is set by a cut-off amplifier and clamp diode.

Trouble Shooting
1. Instroduction
This trouble shooting guide is arranged by fault conditions. Following each fault conditior a check for a signal on condition to be answered YES or NO. For NO answer proceed to the right and continue until the fault is located. For a YES answer continue in the left column to the next numbered check. Again followed this procedure until the fault is located. When Trouble shooting this monitor, some precaution should be observed. Never connect primary ground and secondary ground together including use with an isolation transformer. Measure high voltage with respect to chassing ground only, and with a high impedance probe of 1000 mega-ohm or higher and rated for 30KV DC or higher. Measure QH09 collector pulse with a high quality 100:1 probe rated for 1500 volts or higher.

2. Trouble shooting procedure

3. Trouble shooting procedure
Symptom a) Image is scrlling Check(YES) 1) Check for V-sync at Pin 32 of ICM01 2) Check for positive going V-sync at Pin 14 of ICH01 3) Will V-oscillator is locked with input signal Pin 24 of ICH01 4) Check V-ramp at Pin 13 , 14 of ICH01 Action(NO) Check 15 Pin connector ZDM02 Check ICM01, ICH01 Check CH02

Replace ICH01.

--10--

B790+/F790D Technical Service Manual

Symptom b) Image is unstable.

Check(YES) 1) Check for H-sync at Pin 33 at ICM01 2) Check for positive going V-sync at Pin 15 at ICH01. 3) Will H-oscillator is locked with input signal Pin 29 of ICH01. 4) Check H-out at Pin 8 of ICH01. 5) Check for flyback pulse at Pin 1 of ICH01 1) Check for G2, Pin 4 of CRT. Around 550 volt 2) Check for heater voltage at Pin 6 of CRT. (6.1V) 3) Can screen be lit with brightness control at MAX 4) Check for video at Pin 5,8,10 of ICC01 5) Check for positive pulse for clamp at Pin 18 of ICC01. 6) Check for video pin 21,24,26 of ICC01 7) Check for video at Pin 6,7,9 of ICC03. 8) Check for video at Pin 1,2,3 of ICC03. 9) Check if R,G,B cut-off control the video DC level at Pin 4,6,9 of CRT. 10) Check CRT. 1) Check for 80V at anode of DP12 2) Check for 12V at pin7 of ICH03 3) Check Switching pulse of pin6 of ICH03 4) Check Switching pulse at Drain of QH04 5) Check TH04(FBT) 1) Check for focus waveform at pin32 ICH01 2) Check for 700V at anode of DH24 3) Check Emitter pules of QH18 4) Adjust Focus VR of FBT 1) Check for AC input voit of AI01 2) Check ICP01 pin 3,4 3) Check switch pulse at Drain of QF01 4) Check voltage for, 180V at anode of DP11 and 5V at pin3 of ICH01

Action(NO) Check 15pin connector ZDM01,QM04. Check ICM01,ICH01 Check CH03, RH06, CH04,RH07,RH08 CH05, CH06 Replace ICH01 Check RH10, TH05

c) Screen is black but high voltage is persent

Check RC06,SGC05,CC36,CC38 Socket Check CNC01,RC66,DP13 Check RC35,CC32,QC13,QC14,RC59 Check connector CNC02,DC15~DC20, RC46~48 Check pin 33 of ICM01 Check ICC01, ICM01 Check ICC03, RC26, RC27, RC28 Check ICC03, 80V(dc pin4), 12V(dc pin10) Check QC03~QC08, CRT socket Check 80V with no load if no 80V Check SMPS If 80V OK, Check TH04 QH04,DH05 Check 12V with no load If no 12V, Check QP10,DP15,QP07, SMPS If 12V OK, Check ICH01,ICH03,ICC01 Check ICH03, RH24, CH11 Check QH04

d) Screen is black with no high voltage.

e) Focus Bad

Check ICH01 Check DH24, TH04 Check QH05,QH06,QH17,QH18 Check Power cord,AI01 Check ICP01,NTC01,DP01 Check ,ICP01,TP01,ICF01,ICP03,DP11 Recheck above ltem d

f) No Power

--11--

Adjustment Method
1. Caution
Extremely high voltage are present in the area around the TH04 and the anode high voltage lead. Do not touch ICP01 or its heatsink as high voltage is present on these components. Digital Voltmeter Frequency Counter : about 40 Hz to 100 KHz Color Analyzer Video Signal Generator High Voltmeter : up to 30 KV Verify that the video output level is 0.7 Vpp at 75 ohm termination and the video timings are same as standard timing given in specification. Place the AC power switch to the ON position. Allow the monitor to stabilize thermally for 15 minutes at least before any adjustment about the image parameters. The CRT tube and components of system require time of stabillizing. 4-1 Voltage setting 1) High Voltage Setting - Video Signal : Black pattern in 80kHz, 1280*1024@75Hz mode - Measuring Point : HI-POT (With CRT B'd) - Adjustment : VRH01, main board V - Limits : -158 4-2 Factory mode setting - Turn off the power - Keep pressing the menu key and turn on the power - After turn on the power, press the menu select key one more time, and you can see the message on the botton of the OSD main menu. - This is the factory mode - Select the "Recall" menu before you exiting the factory mode. - Turn off the power to save the adjusted state. 4-3 Rotation setting - Video signal : Cross Hatch pattern in 94kHz, 1600 mode - Adjust the tilt of screen by using the MENU , and select keys.

2. Equipment Required

3. Before Adjustment

4. Adjustment Procedure

--12--

B790+/F790D Technical Service Manual

4-4 Color setting - Adhere color Analyzer sensor closely to CRT center. - Video mode : 94kHz, 1600 mode 1) Color Temperature 9300°K setting - Video Signal : Back Raster pattern - Select " RGB" by using the MENU , and select keys. Cut-off Setting · Select "CUT OFF" by using the , and select keys. · Press the select key to get the desired R, G or B Cut-off. · Press the or keys to limit the X and Y color coordinate. · Limits : x=0.283 0.02, y=0.297 0.02, Y=2.0 0.5cd/m2 Drive Setting · Video signal : 2" square white box · Select the "9300 " by the using , and select keys. · Adjust the brightness go to 80 100 cd/m2 by pressing the rotating the and keys of contrast. · Press the SELECT key to get the desired R/G/B drive. · Press the or keys to limit the X and Y color coordinte. · Limits : X=0.283 0.02, Y=0.297 0.02 Contrast Setting · Adjust the brightness of 2" square white box by pressing the rotating the and keys of contrast. · Limits : 150 3 cd/m2 · More than 150 cd/m2 2) Color Temperature 6500°K Setting - Video Signal : Back Raster pattern - Select " COLOR CONTROL " by using the MENU , and select keys. Drive, contrast Setting ·The method of Adjust is same to 9300°K. ·The color coordinate is X=0.313 0.02, Y=0.329 0.02. 3)ABL Setting - Video Signal : Full White Pattern - Select"AB" by using the manu , and select keys - Adjust the brightness to 105~110 cd/m2 by pressing the keys of ABL 4-5 Focus ·Video Signal : Full "H" character Pattern in 94KHZ ·Adjust H/V Focus VR on the top or center of the FBT so that image of whole screen look clear

5. X-Ray Protection Test
1) In any signal input condition, short RH11 (main board) by using the JIG. 2) At this moment, check out whether raster disappears. 3) Remove the JIG. 4) After the power switch of the set off and on, check out proper working

--13--

AGING and Self Test Mode

The monitor has an enhanced level of self-diagonostics. When the signal cable is removed or signal isn't detected, the monitor is operated to OFF-Mode. If Function Button is pushed on OFF-Mode, the system has the ability to generate an R.G.B test pattern and the following OSD image is displayed on screen.

Note 1) Until press information Icon in main menu, the monitor is operated burn-in mode(full white pattern)display.

NO SIGNAL

2) After press information Icon in main menu, the monitor display random BOX pattern.

NO SIGNAL

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B790+/F790D Technical Service Manual

Specification
SIZE CRT Dot Pitch Type Input Signal Connector H-F V-F · C17R06091 : (15.7" viewable) Diagonal FST · C17R06091 : (16" viewable) Diagonal FST · C17R06091 : 0.26 mm · C17R06091 : Non-glare R.G.B Analog 15 pin D-Type 30 kHz 97kHz(Automatic) 50 Hz 150 Hz(Automatic) 202.5MHz(Max dot rate) · C17R06091 : 300 x 229 mm (Max Over Scan) · C17F06091 : 305 x 229 mm (Max Over Scan) Max. 1600 1200 (94kHz/75Hz)
H/V Position,H/V Size,Pincushion,Trapezoid,Parallelogram, Pin balance,Rotation,H/V Moire,Recall,Degauss,Color Control, 5Languages, Information,Brightness, Contrast, DPMS LED, Power Switch,OSD H/V position,Corner Top/BTM

· C17F06091 : 0.25 mm · C17F06091 : Spin Coating

SYNC

Video Bandwidth Display Area(H V) Color Resolution

User Controls

Power Management VESA DDC 1/2B, 2B+ Compatibility Power Source TCO Safety & Regulation EMC Safety Operating Storage Operating Storage Weight

As per VESA Standard, Lower than EPA's recommendation Basic VESA, 8514/A, XGA, EVGA, MAC II 100-240 VAC(Universal Power) 2.5A/100W 95,99 FCC Class B, CE cULus, TÜV-GS, DHHS, SEMKO 0 to 35 degree celsius -20 to 60 degree celsius 35% to 80% (Non-condensing) 5% to 85% · C17R06091 : Uint 13.7Kg · C17F06091 : Uint 16.0Kg · C17R06091 : 404 X 408 X 420 Carton : 16.0Kg Carton : 19.0Kg

Temperature

Humidity

Dimension(W H D mm)

· C17F06091 : 404 X 408 X 414

Specification is subject to change without notice for performance improvement.

--15--

Critical Parts Specification
TDA4841
FEATURES
Concept features · Full horizontal plus vertical autosync capability · Extended horizontal frequency range from 15 to 130kHz · Comprehensive set of I2C-bus driven geometry adjustments and functions, including standby mode · Very good vertical linearity · Moire cancellation · Start-up and switch-off sequence for safe operation of all power components · X-ray protection · Power dip recognition · Flexible switched mode B+ supply function block for feedback and feed forward converter · Internally stabilized voltage reference · Drive signal for focus amplifiers with combined horizontal and vertical parabola waveforms · DC controllable inputs for Extremely High Tension (EHT) compensation · SDIP 32 package. Synchronization · Can handle all sync signals (horizontal, vertical, composite and sync-on-video) · Output for video clamping (leading/trailing edge selectable by I2C-bus), vertical blanking and protection blanking · Output for fast unlock status of horizontal synchronization and blanking on grid1 of picture tube. Horizontal section · I2C-bus controllable wide range linear picture position, pin unbalance and parallelogram correction via horizontal phase · Frequency locked loop for smooth catching of horizontal frequency · Simple frequency preset of fmin and fmax by external resistors · Low jitter · Soft start for horizontal and B+ control drive signals. Vertical section · I2C-bus controllable vertical picture size, picture position, linearity (S-correction) and linearity balance · Output for I2C-bus controllable vertical sawtooth and parabola (for pin unbalance and parallelogram) · Vertical picture size independent of frequency · Differential current outputs for DC coupling to vertical booster. · 50 to 160Hz vertical autosync range. East-West (EW) section · I2C-bus controllable output for horizontal pincushion, horizontal size, corner and trapezium correction · Optional tracking of EW drive waveform with line frequency selectable by I2C-bus. Focus section · I2C-bus controllable output for horizontal and vertical parabolas · Vertical parabola is independent of frequency and tracks with vertical adjustments · Horizontal parabola independent of frequency · Adjustable pre-correction of delay in focus output stage.

--16--

EHT compensation via vertical size VCAP 7V EHT compensation via horizontal size 1.2V EWDRV V-OUTPUT V-LINEARITY V-LINEARITY BALANCE 13 VOUT1 12 VOUT2 HSMOD 31 11 EW-OUTPUT H-PINCUSHION H-CORNER H-TRAPEZIUM H-SIZE 150 nF VAGC VSMOD 22 21 EHT COMPENSATION H-SIZE AND V-SIZE 22 k 1% VREF 100 nF 5% 23 V-SYNC INTEGRATOR VERTICAL OSCILLATOR AND AGC 24

BLOCK DIAGRAM

V-sync (TTL level)

14

V-SYNC INPUT AND POLARITY CORRECTION

B790+/F790D Technical Service Manual

clamping blanking V-POSITION V-SIZE, VOVSCN TDA 4841

16

VIDEO CLAMPING AND V-BLANK OUTPUT ASYMMETRIC EW-CORRECTION

ASOR 20

or

HUNLOCK

17

HUNLOCK OUTPUT

PROTECTION AND SOFT START

--17-I C-BUS REGISTERS X-RAY COINCIDENCE DETECTOR FREQUENCY DETECTO PROTECTION
2

SDA

19

32

SCL

18

I 2 C-BUS RECEIVER

FOCUS HORIZONTAL AND VERTICAL

Vcc

10

7

9.2 to 16 V

25

SUPPLY AND REFERENCE PLL1 AND H-POSITION 26 3.3 k 100 nF 1% 8.2 nF 2% HREF HCAP 10 nF 27 28 29 OSCILLATOR HORIZONTAL

X-RAY BDRV 6 BSENS 4 (2) B+ B+ CONTROL BOP 3 CONTROL APPLICATION 5 BIN

H-sync (TTL level) 30

15

H/C-SYNC INPUT AND POLARITY CORRECTION

PLL2, PARALLELOGRAM PIN UNBALANCE AND SOFT START 1 9 2

H-OUTPUT STAGE

8 HDRV

(video)

MHB603 12 nF HFLB XSEL X-RAY

R HBUF (1) R HREF

PIN CONFIGURATION

HFLB XRAY BOP BSENS BIN BDRV PGND HDRV XSEL Vcc EWDRV VOUT2 VOUT1 VSYNC HSYNC CLBL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

TDA4841

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

FOCUS HSMOD HPLL2 HCAP HREF HBUF HPLL1 SGND VCAP VREF VAGC VSMOD ASCOR SDA SCL HUNLOCK

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 detect and normalize the sync polarity. The output signals of vertical sync integrator and sync normalizer are disjuncted before they are fed to the vertical oscillator. Video clamping vertical blanking generator The video clamping vertical blanking signal at CLBL (pin 16) is a two-level sandcastle pulse which is especially suitable for video ICs such as the TDA488x family, but also for direct applications in video output stages. The upper level is the video clamping pulse, which is triggered by the horizontal sync pulse. Via I2Cbus Control either the leading or trailing edge can be selected by setting control bit CLAMP. The width of the video clamping pulse is determined by an internal single-shot multivibrator. The lower level of the sandcastle pulse is the vertical blanking pulse, which is derived directly from the internal oscillator waveform. It is started by the vertical sync and stopped with the start of the vertical scan. This results in optimum vertical blanking. Via I2C-bus Control two different vertical blanking times are accessible by control bit VBLK. Blanking will be activated continuously, if one of the following conditions is true: Soft start of horizontal and B+ drive (voltage at HPLL2 (pin 30) pulled down externally or by I2Cbus) PLL1 is unlocked while frequency-locked loop is in search mode No horizontal flyback pulses at HFLB (pin 1) X-Ray protection is activated Supply voltage at Vcc (pin 10) is low see Fig.22 Via I2C-bus Control horizontal unlock blanking can be switched off by control bit BLKDIS while vertical blanking is maintained. Frequency-locked loop The frequency locked loop can lock the horizontal oscillator over a wide frequency range. This is achieved by a combined search and PLL operation. The frequency range is preset by two external resistors and the recommended maximum ratio is
fmax fmin
= 6.5 1

FUNCTIONAL DESCRIPTION Horizontal sync separator and polarity correction HSYNC (pin 15) is the input for horizontal synchrodization signals, which can be DC-coupled TTL signals (horizontal or composite sync) and ACcoupled negative-going video sync signals. Video syncs are clamped to 1.28V and sliced at 1.4V. This results in a fixed absolute slicing level of 120mV related to sync top. For DC-coupled TTL signals the input clamping current is limited. The slicing level for TTL signals is 1.4V. The separated sync signal (either video or TTL) is integrated on an internal capacitor to detect and normalize the sync polarity. Normalized horizontal sync pulses are used as input Signals for the vertical sync integrator, the PLL1 phase detector and the frequency-locked loop. Vertical sync integrator. Normalized composite sync signals from HSYNC are integrated on an internal capacitor in order to extract vertical sync pulses. The integration time is dependent on the horizontal oscillator reference current at HREF (pin 28). The integrator output directly triggers the vertical oscillator.

--18--

B790+/F790D Technical Service Manual

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 fmix . 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. This means that PLL1 control currents are switched off immediately. The internal frequency detector then starts tuning the oscillator. Very small DC currents at HPLL1(pin26) are used to perform this tuning with a well defined change rate. When coincidence between horizontal sync and oscillator frequency is defected, the search mode is first replaced by a soft-lock mode which lasts for the first part of the next vertical period. The soft-lock mode is than replaced by a normal PLL operation. This operation ensures a smooth tuning and avoids fast changes of horizontal frequency during catching. In this concept it is not allowed to load HPLL1. The frequency dependent voltage at this pin is fed internally to HBUF(pin27)via a sample-and-hold and buffer stage. The sample-and-hold stage removes all disturbanes caused by horizontal sync or compostite vertical sync from the buffered voltage. An external resistor connected between pins HBUF and HREF defines the frequency range. Out-of-lock indication(pin HUNLOCK) Pin hunlock is floating during search mode or if a protection condition is true. All this can be detected by the microcontroller if a pull-up resistor is connected to its own supply voltage. For an additional fast vertical blanking at grid 1 of the picture tube, alv signal referenced to ground is available at this output. Also the continuous protection blanking (see Section "Video clamping/vertical blanking generator") is avallable at this pin. Via I2c-bus control, the control bit Blkdis Can switch off horizontal unlock blanking while vertical blanking is maintained. Horizontal oscillator The horizontal oscillator is of the relaxation type and requires a capacitor of 10 nF at HCAP(pin29). For optimum jitter performance the value of 10nF must not be changed. The minimum oscillator frequency is determined by a resistor connected between pin HREF and ground. A resistor connected between pins HREF and HBUF defines the frequency range. The reference current at pin HREF also defines the integration time constant the vertical sync integration.

--19--

WT62PI
PIN CONNECTIONS
PWM2 PWM1 PWM0 RESET/3V3 VDD GND OSCO OSCI PB5/SDA2 PB4/SCL2 PB3/PAT PB2 PB1/HFI PB0/HFO IRQ PC7/SOGIN PC6 PC5 PC4 PC3/AD3

PIN DESCRIPTION
40 39 38 37 36 35 34 33
VIN HIN PWM3 PD5/PWM4 PD4/PWM5 PD3/PWM6 PD2/PWM7 PD1/HOUT PD0/VOUT PD7/PWM13/CLAMP PA6/PWM12 PA5/PWM11 PA4/PWM10 PA3/PWM9 PA2/PWM8 PA1/SCL1 PA0/SDA1 PC0/AD0 PC1/AD1 PC2/AD2

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20

32 31 30 29 28 27 26 25 24 23 22 21

1 2 3 4 Reset 5 +5V 6 GND 7 OSC0 8 OSC1 9 SUS/Stand-by 10 off (not used) 11 H-mute 12 Direction 13 Degauss 14 BNC/D-Sub 15 ENCODER 16 LED1 17 LED2 18 19 SCL 20 SDA

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

UNLOCK ABL Key-in SDA1 SCL1 CS5 CS4 CS3 CS2 CS1 Clamp V-out H-out sub size Brt H-Lin TILT ACL H-Sync V-Sync

WT62P1-N40

TLP621DS

1

3

1 : ANODE 2 : CATHODE 3 : EMITTER

2

4

4 : COLLECTOR

--20--

B790+/F790D Technical Service Manual

STR-F6654
BLOCK DIAGRAM
4
VIN R3

3
START REG.
Vth (1)

D

O.V.P

LATCH

R4

O.S.C

2
O.S.C Iconst
Comp.2 Vth(2) Comp.1

S

T.S.D

1
O.C.P/F.B

Rconst+

RconstC1 R1

5

GND

Function of Terminal
Terminal No. 1 2 3 4 5 Symbols O.C.P/F.B S D VIN GND Description Overcurrent/Feedback terminal Source terminal Drain terminal Power supply terminal Ground terminal Functions Input of overcurrent detection signal and constant voltage control signal MOS FET source MOS FET drain Input of power supply for control circuit Ground

Other Function
Symbols O.V.P T.S.D Functions Built-in overvoltage protection circuit Built-in thermal shutdown circuit

Internal Constants
R1 R2 R3 TOFF Adjustment Trimming Resistor Iconst Adjustment Trimming Resistor 150 R4 10 C1 4700pF

--21--

MC33260

Gr eenLine Compact Power Factor Controller: Innovative Circuit for Cost Effective Solutions
The MC33260 is a controller for Power Factor Correction preconverters meeting international standard requirements in electronic ballast and of f±line power conversion applications. Designed to drive a free frequency discontinuous mode, it can also be synchronized and in any case, it features very ef fective protections that ensure a safe and reliable operation. This circuit is also optimized to of fer extremely compact and cost ef fective PFC solutions. While it requires a minimum number of external components, the MC33260 can control the follower boost operation that is an innovative mode allowing a drastic size reduction 8 of both the inductor and the power switch. Ultimately system cost is significantly lowered. Also able to function in a traditional way (constant output voltage regulation level), any intermediary solutions can be easily implemented. This flexibility makes it ideal to optimally cope with a wide range of applications.

General Features
” ” ” ” ” ” ” ” ” ”

Safety Features
” ” ” ” ” ”

Standard Constant Output V oltage or TMFollower Boost Mode Switch Mode Operation: V oltage Mode Latching PWM for Cycle±by±Cycle On±Time Control Constant On±T ime Operation That Saves the Use of an Extra Multiplier Totem Pole Output Gate Drive PIN CONNECTIONS Undervoltage Lockout with Hysteresis Low Start±Up and Operating Current FeedbackInput 1 8 VCC Improved Regulation Block Dynamic Behavior Vcontrol 2 7 Gate Drive Synchronization Capability Oscillator Internally Trimmed Reference Current Source 6 Gnd Capacitor (CT) 3 Overvoltage Protection: Output Overvoltage Detection Undervoltage Protection: Protection Against Open Loop Ef fective Zero Current Detection Accurate and Adjustable Maximum On±Time Limitation Overcurrent Protection ESD Protection on Each Pin
Current Sense 4 Input MC33260P 5 Synchronization Input

--22--

B790+/F790D Technical Service Manual

MC33260
BLOCK DIAGRAM
V o

Current Mirror 2xI xI IOSC- ch = O O Iref CT 11 V 1 0 15 pF 97%Iref Iref Output_Ctrl Io Io Io Io V ref Iref Current Mirror FB

1.5 V Io V reg 300 k Vcontrol

REGULAOR T Enable

V ref + Iref r r Iuvp + r UVP OVP

11 V

+ Ics (205 A) -60 mV 1 Current Sense LEB 11 V 0

11 V/8.5 V

Synchro 11 V

+ Output_Ctrl ThStdwn

Synchro Arrangement VCC

Drive Gnd S

R + PWM Comparator R R

Q PWM Latch Q MC33260 Output_Ctrl

--23--

KA2142

Vcc(L) 2

Vcc(H) 9

F.G

4
FLYBACK GENERATOR

Vin(-)

1

Vin(+) 10

- PRE +AMP

DRIVE STAGE

OUTPUT STAGE

6 VOUTPUT

THERMAL SHUTDOWN

5
GND

Table1. Pin Configurations Pin No 1 2 3 4 5 6 7 8 9 10 Symbol Vin ( - ) Vcc ( L ) F.G GND VD Vcc ( H ) Vin ( + ) I/O I I O O I I Configurations Inverting Input Supply Voltage N.C Flyback Generator Ground Output N.C N.C Output Stage Voltage Non-Inverting Input

--24--

B790+/F790D Technical Service Manual

KA2506
PIN CONNECTION
I2C BUS CONTROLLED R/G/B VIDEO AMPLIFIER
The KA2506-01 is a very high frequency video amplifier system with I2 C Bus controlled used in Monitor with high resolution up to1280 X 1024. It contains 3 matched R/G/B video Amplifiers with OSD interface and provides a flexible interfacing to I 2 C Bus controlled adjustment system. 28-DIP-600A

FUNCTIONS
· R/G/B Video Amplifier · OSD Interface · I2 C BUS Control · Contrast/OSD Contrast · Brightness Control · Cut-Off Brightness Control · R/G/B SUB Contrast/Cut-Off Control · Blank/Clamp Gate · Half tone (2 OSD Raster/8 Colors) · Brightness Uniformity
Device KA2506-01 Package 28-DIP-600A Operating Temperature -20 °C ~ +70 °C C C

ORDERING INFORMATION

FEATURES
· 3-Channel R/G/B Video Amplifier, 175MHz @f-3dB · I2 C Bus Control Items - Contrast Control - SUB Contrast Control For Each Channel - Brightness Control - OSD Contrast Control - Cut-off Brightness Control - Cut-off Control For Each Channel - Switch Registers for SBLK and Video Half Tone and Cut-Off INT/EXT and BPS (Blank Gate Polarity Selection) · SUB Contrast Control Range: -11dB · Capable of 7.0Vpp Output Swing Range · Video/OSD High Speed Switch · Clamp Gate With Anti OSD Sagging · B/U(Brightness Uniformity) Interface · Video Input Clamp, BRT Clamp · Video & OSD Half Tone Function on OSD Picture (2 OSD Raster Selection by HR1, HG1, HB1, HR2, HG2, HB2: 8 colors) · OSD Interface, OSD BLK · ABL · TTL R/G/B OSD Inputs, 80MHz bandwidth · Contrast Control Range: -38dB · OSD Contrast Control Range: -38dB

--25--

BLOCK DIAGRAM

ONE (RED) OF THREE CHANNELS ROSD GOSD 1
OSD INTERFACE OSD RASTER VIDEO HALF-TONE OSD CONTRAST

BLK

VIDEO OSD SWITCH

A2

26 ROUT
CLP

+
VIDEO CONTRAST

SUB CONTRAST A1

2

27
A3 gm2

RCLP RCT

BOSD VCC2

3 9
gm1

HALF-TONE

17 23

+ +

Cut Off

VCC3

+ 22 21 GND3 BOUT

RIN VCC1

5 6
CLP
R/G/B CUT OFF CONTROL (07/08/09H)

CLP BLK

GND1

7
CONTRAST CONTRAL (00H) OSD CONT CONTROL (05H)

R/G/B DRIVE CONTROL (02/03/04H)

20

BCLP BCT

CUT OFF EXT OFFSET D3:5 (0AH)

CUT OFF INT/EXT SWITCH(0AH)

BRIGHTNESS CONTROL (01H)

GIN

8
B/U INTERFACE VIDEO/OSD SWITCH VIDEO HALF-TONE OSD RASTER SELECT
VIDEO-HALF TONE SWITCH D1(0AH)

15
CUT OFF BRIGHT (06H)

B/U VI/OSD_SW

28 4

24 GOUT 25 16 GCLP GCT

OSD RASTER COLOR D6:7(0AH) SOFT BLANK D0(0AH)

CLP

18

CLAMP GATE

BLANK GATE

BIN BLK

10

12

ABL

19

I2C BUS CONTROL INTERFACE & CONTROL

14

SDA

GND(L)

11

13

SCL

--26--

B790+/F790D Technical Service Manual

14 SDA BCT 15

13 SCL GCT 16

12 ABL RCT 17

11 GND(L) CLP 18

10 BIN BLK 19

KA2506-01
ROUT GOUT BOUT 21 GND3 GCLP VCC3 RCLP BCLP 20 B/U 22 23 24 25 26 27 28

9 VCC2

8 GIN

7 GND1

6 VCC1

5 RIN

4 VI/OSD_SW

3 BOSD

2 GOSD

1 ROSD

Pin Configurations
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Symbol ROSD GOSD BOSD VI/OSD_SW RIN VCC1 GNDI GIN VCC2 BIN GND(L) ABL SCL SDA BCT GCT RCT CLP BLK BCLP BOUT GND3 VCC3 GOUT GCLP ROUT RCLP B/U I/O I I I I I I I I/O I/O I I I I I O O O I Configurations Red OSD Input Green OSD Input Blue OSD Input Video or OSD Switch Red Video Input VCC(normal) Ground1(normal) Green Video(lnput) VCC(normal) Blue Video Input Ground2(logic) Automatic Beam Limit Serial Clock Serial Data Blue Cut Off Control Green Cut Off Control Red Cut Off Control Clamp Gate Signal Input Blank Gate Signal Input Blue Clamp Cap Blue Video Output Ground3(drive part) VCC(drive part) Green Video Output Green Clamp Cap Red Video Output Red Clamp Cap Brightness Uniformity

--27--

LM431
PROGRAMMABLE PRECISION REFERENCES SILICON MONOLITHIC INTEGRATED CIRCUIT · Programmable Output Voltage to 36V · Voltage Reference Tolerance : ± 0.4% , Typ@ 25°C (TL431B) · Low Dynamic Output Impedance, 0.22 Typical · Sink Current Capability of 1.0mA to 100mA · Equivalent Full-Range Temperature coefficient of 50 ppm/°C Typical · Temperature Compensated for Operation over full Rated Operating Temperature Range. · Low Output Noise Voltage SYMBOL
Cathode (K) Reference (R) Anode (A)

FUNCTIONAL BLOCK DIAGRAM
+

Reference (R)

Cathode (k)

2.5V ref Anode (A)

1

Pin 1. Reference 2. Anode 3. Cathode
2 3

INTERNAL SCHEMATIC Component values are nominal

LP SUFFIX CASE 92 (TO-92)

LM2435

Monolithic Triple 5.5 ns CRT Driver
General Description
The LM2435 is an integrated high voltage CRT driver circuit designed for use in color monitor applications. The IC contains three high input impedance, wide band amplifiers which directly drive the RGB cathodes of a CRT. Each channel has its gain internally set to -14 and can drive CRT capacitive loads as well as resistive loads present in other applications, limited only by the package's power dissipation. The IC is packaged in an industry standard 9-lead TO-220 molded plastic power package. See Thermal Considerations section.
” Well matched with LM1279 and LM1282/83 video

preamps
” 0V to 5V input range ” Stable with 0 pF±20 pF capacitive loads and

peaking networks
” Convenient TO-220 staggered lead package style ” Standard LM243X Family Pinout which is designed

easy PCB layout

Applications
” 1280 x 1024 Displays up to 75 Hz Refresh ” Pixel clock frequencies up to 135 MHz ” Monitors using video blanking

Features
” Dissipates approximately 45% less power than the

LM2405

Schematic and Connection Diagrams

DS101044-2

Note: Tab is at GND

Top View Order Number LM2435T
DS101044-1

FIGURE 1. Simplified Schematic Diagram (One Channel)

--28--

B790+/F790D Technical Service Manual

KA3843B
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 · UNDER-VOLTAGE LOCKOUT WITH HYSTERESIS · DOUBLE PULSE SUPPRESSION · HIGH CURRENT TOTEM POLE OUTPUT · INTERNALLY TRIMMED BANDGAP REFERENCE · 500KHz OPERATION · LOW Ro ERROR AMP PIN CONNECTION
Comp VFB Isense R T/C T 1 2 3 4 8 7 6 5 VREF Vcc Output GROUND

Minidip

BLOCK DIAGRAM
Vcc
+

Vcc 7 36 V

Vin

Vrel 8 R R1 2.5V R Internal bias 3.6 V

Reference regulator
+

Vcc UVLO

C1

4
+

Oscillator + 1.0 mA 2R 10 V R
+

Voltage feedback input 2 Output/ compensation 1

Error amplifier

Ground

+

Vref UVLO

Vc 7 Output S R Q1

Q PWM latch

6 Power ground 5 Current sense Input 3 R5

Current sense comparator 5

KA3843B

--29--

24C08
8K 2.5V CMOS Serial EEPROMs FEATURES · Single supply with operation down to 2.5V · Low power CMOS technology - 1 mA active current typical - 10uA standby current typical at 5.5V - 5uA standby current typical at 3.0V · Organized as two or fore block of 256 bytes (2 X256X8) and (4X256X8) · Two wire serial interface bus I2CTM · Schmitt tigger, filtered inputs for noise suppression ·Output slope control to eliminate ground bounce ·100KHz(2.5V) and 400KHz(5V) compatibility · Self-timed write cycle(including auto-erase) · Page-write buffer for up to 16 bytes · 2 ms typical wirte cycle time for page-write · Hardware write cycle time for page-write · Can be operated as a serial ROM · Factory programmong (OPT) available · ESD protection > 4.000V · 1,000,000 ERASE/WRITE cycles(typical) · Data retention > 40 years · 8-pin DIP, 8-lead or 14-lead SOIC packages · Available for extended temperature ranges - Commercial : 0 °C to +70 °C - Industrial : -40°C to +85 °C 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 256 X 8 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 5uA and 1mA respectively. The 24LC048 / 08B also has a page-write capability for up to 16 bytes of data. The 24LC04B / 08B is available in the standard 8-pin DIP and both 8-lead and 14-lead surface mount SOIC packages.

--30--

B790+/F790D Technical Service Manual

BLOCK DIAGRAM

WP

HV GENERATOR

I/O CONTROL LOGIC

MEMORY CONTROL LOGIC

XDEC

EEPROM ARRAY (2X256X8) OR (4X256X8) PAGE LATCHES YDEC

SDA Vcc Vss

SCL

SENSE AMP R/W CONTROL

PIN CONFIGURATION DIP Package

A0 A1 A2 VSS

1 2 3 4

8 7 6 5

VSS WP SCL SDA

PC is a trademark of philips Corporation

--31--

LM358

OUTPUT A

1

8 7
„ „

V OUTPUT B INVERTING INPUT B NONINVERTING INPUT B

INVERTING INPUT A NON INVERTING INPUT A GND

2 3 4

6 5

Voltage Regulator ICS
Type No KIA7805P/PI KIA7806P/PI KIA7808P/PI KIA7809P/PI KIA7810P/PI KIA7812P/PI KIA7815P/PI KIA7818P/PI KIA7820P/PI KIA7824P/PI 1.0A 3Terminal Regulator Function Max Typ Vo(V) Io(A) Vin(V) PD(W) 5 6 8 9 10 12 15 18 20 24 40
I C O

Package
OUTPUT COMMON INPUT

35 1.0 20.8

TO-220AB

--32--

B790+/F790D Technical Service Manual

MTV021
FEATURES · Horizontal SYNC input up to 130KHz. VSS(A) · On-chip PLL circuitry up to 96 MHz. · Programmable horizontal resolutions up to 1524 VCO dots per display row. RP · Full-screen display consists of 15(rows)by 30(columns) characters. VDD(A) · 12 X 18 dot matrices per character. · Total of 272 characters and graphic fonts, inclding HFLB 256 standard and 16 multi-color mask ROM Fonts. · 8 color-selectable maximum per display chardcter. SSB · 7 colcr-selectable maximum for character background. SDA · Double character height and/or width control. · Programmable positioning for display screen center. SCK · Row to row spacing register to manipulate the constant display height. · 4 Programmable backgound windows with multilevel operation and shadowing on window effect. · Software clears bit for full-screen erasing. · Half tone and fast blanking output. · Fade-in/fade-out effect. · 8-channel/8-bit PWM D/A converter output. · Compatible with SPI bus or I2C interface with slave address 7AH(slave address is mask option). · 16-pin. 20-pin or 24-pin PDIP package.

1 2 3 4 5 6 7 8 MTV021

16 15 14 13 12 11 10 9

VSS ROUT GOUT BOUT FBKG HTONE/PWMCK VFLB VDD

--33--

Power Transistor
RATING Base Breakdown Voltage SYMBOL VCBO 2SC5411 1500 600 14 28 7 UNIT Vdc Vdc Adc Adc

Emitter Sustaining Voltage VCEO(SUS) Current-Continuous -Pulsed(1) Current-Continuous IC ICP IB

2SC5411

FNQG1FS
QUICK REFERENCE DATA
SYMBOL VRRM VF IF(AV) IFSM PARAMETER Repetitive peak reverse voltage Forward voltage Average forward current Non-repetitive peak forward current Reverse recovery time MAX. 1500 1.35 10 75 0.25 UNIT V V A A µs

trr

PIN CONFIGURATION

SYMBOL

Case

k 1

a 2

--34--

B790+/F790D Technical Service Manual

TRANSISTORS
Type No. KSP45 KSA928AY KTA200Y KSA1013AY KSA2328AY KRC102M KTA1266 KTC3200 KTC3228Y KSC5042F BD135 2N5770 KSP92 KSP42 R1002 KSC945CY KTA1275Y KTA1268BL KSA733 KTC3198Y MAX. RATINGS IC PC VCEO (V) (mA) (mW) 350 -30 -50 -160 30 50 -50 120 160 900 45 15 -300 300 -50 50 -160 -120 -50 50 300 -2A -500 -1A 2A 100 -150 100 1A 100 2A 50 -500 500 100 150 -1.0A -100 1.5W 1W 625 900 1W 400 625 625 1W 6W 8W 350 625 625 VCE(SET) (V) 0.5 -2.0 -0.25 -1.5 2.0 -0.3 -0.3 0.3 1.5 5 0.5 0.4 -0.5 -0.5 -0.3 0.15 -1.5 -0.3 -0.18 0.25 20 IC (mA) 10 -1.5A -100 -500 1.5A -100 -100 10 500 20 500 10 Max IB (mA) 1 -30 -10-30 -50 3.0 -0.88 -10 1 50 4 50 1.0 -0.25 2 -0.88 10 -50 -1 -10 10 1 E E E E E E E E E E E E E E E E E E E E No 2 B C C C C C C C B C C B B B C B C C B C 3 C B B B B B B B C B B C C C B C B B C B Package TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 TO-92 TO-220 TO-92 TO-126 TO-92 (5011) TO-92M TO-92 TO-92L TO-92 TO-92 TO-92

400 250
1W 400 250 625

-100
100 -500 -10 -100 100

-150
150

--35--

FET 2N7000 FQPF9N50 IRF630A IRFS630A 2SK2761

VDSS
(V)

IDSS

PD

RDSS(ohm) 5 0.58 0.4 0.4 2.1

VGS 40V

1 S G

2 G D D D D

3 D S S S S

PACKAGE TO-92 TO-220 TO-220 TO-220 TO-220IS

60 500 200 200

200mA 400mW

5.3A 9A 6.5A

50W 72W 38W 40W

4.0

G G

900V 10A (VDSS) (ID) 200V 9A

± 30V

(PT)
75W

RDS(On)
0.4 (MAX) RDS(On) 0.18

(VGSS)
±20V

G

IRF630

(VDSS) (ID)
200V 900 18A 24A

(PT)
139W

(VGSS )
±30V

G

D

S

TO-220AB

IRF640 2SK2847 IRF9630

(VDSS) (ID) (VDS) (IDP)
-200V -6.5A (VDSS) (ID)

(PT)
85W 75W

RDS(On)
1.1 RDS(On) 0.8 RDS(ON)

(VGSS)
± 30

G G G

D D D

S S S

TO-220AB TO-3P TO-220

(VGS)
±20V

(PD)

(VGS)

TO-92
1 23

TO-92L

TO-92M

TO-220IS

TO-3P

TO-220AB

1 23

1 23

--36--












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