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API Confidential

No Copy/Reproduction Allowed

7299sl Service Guided

When power is initially applied to the circuit, capacitor C607 charges through C604, R602, D601,
D602. When the voltage across C607 reaches a level of 16V, IC601 is turn-on the +5Vdc will
beset up at pin8 then R613, C615 generate a fixed frequency sawtooth wave to pin4, at this time
MOSFET will be drived by pin6 with square wave the pulse width of square wave is decided by
pin2 , pin3 is current feedback control, It will to sense MOSFET current. The D606, D607,
R614,C617 are soft start components to avoid the duty too large when power starts up.

2.3.3.6 Feedback circuit

This power supply adopt a single feedback circuit of +200V. It used IC702 for voltage regulation
and IC602 for primary-secondary isolation, The output voltage differential signal will be detected
and sensed to the pin2 of UC3842 for comparison then the duty cycle of MOSFET will be decided
to control the output voltage.

CN702

CN701

G

K

A

3

4

2

1

+

R

K

A

ZD704

ZD705

IC703

IC602

VR701

D710

R738

C716

R715

R717

R731

R730

C707

C715

R739

R729

Q70

D712

R617

R728

R703

ZD702

ZD703

IC702

1/2W

18V

1/2W

24V

MCR100-3

TLP721F

200

1N4148

200

35V

22U

1K

10K

2.4K

1/2W

200K

(PE)

100V

.022u

50V

10U

150

470

H94

1N4148

4.7K

15k

1/4W

100

1/2W

18V

1W

82V

TL431

+6.5VA

+6.5VA

+24V

+80V

+200V

2.3.3.7 DEGAUSS CIRCUIT

CN604

4

3

1

2

5

6

2

1

4

3

1

~

-

+

RL601

R720

R721

D708

CN602

BD601

Q704

R740

TR601

TR602

(OPEN)

(OPEN)

1N4148

2P

RBV606

H945

2.2K

15SP005

9 OHM

DEGAUSS

+24V

L

N

This circuit has the function of auto degaussing and manual degaussing. When power supply is
switched ON it is auto degaussing stage. When user make the selection of the manual
degaussing function in OSD, the degaussing current will flow through coil to degauss the screen
of monitor. TR602 is a PTCR to control degaussing coil current

2.3.3.8 power saving control

Mode

H-sync

V-sync

LED

Power Rating

Normal

Normal

Normal

Green

100

Stand-by

None

Normal

Orange

15W

Suspend

Normal

None

Orange Flash

5W

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Summary of Contents for 7299sl

Page 1: ...ical magnetic optical chemical manual or otherwise without the prior written permission of Acer Peripherals Inc Disclaimer Acer Peripherals Inc makes no representations or warranties either expressed or implied with respect to the contents hereof and specifically disclaims any warranties mechantability or fitness for any particular purpose Further Acer Peripherals Inc reserves the right to reserve...

Page 2: ...ii API Confidential No Copy Reproduction Allowed 7299sl Service Guide ...

Page 3: ...liability 1 7 1 2 10 Mechanical Design for TCO 99 1 7 1 3 Input Output Specifications 1 7 1 3 1 Input Signal Requirements 1 7 1 3 1 1 Signal cable 1 7 1 3 1 2 Video signal 1 8 1 3 1 3 SYNC signal 1 8 1 3 1 4 Timing 1 8 1 3 1 5 Input signal Quality 1 9 1 3 2 Power Supply Requirements 1 9 1 3 2 1 Input Power Requirements 1 9 1 3 2 2 Output Power Requirements 1 9 1 3 2 3 AC Power Inlet 1 10 1 3 2 4 P...

Page 4: ...2 Documentation 1 21 Fig 2 Pincushion Measurements 1 22 2 CRICUIT OPERATION THEORY 2 1 2 1 Deflection CKT 2 1 2 1 1 99sl System Block Diagram 2 1 2 1 2 Deflection and HV generation circuit introduction 2 1 2 1 2 1 Deflection and HV generation circuit block diagram 2 1 2 1 2 2 99sl Function Block of Deflection HV generation 2 2 2 1 3 Internal Function Block Diagram of The Autosync Deflection Contro...

Page 5: ... 2 20 2 4 Video Circuit 2 21 2 4 1 Design Specifications 2 21 2 4 1 1 input 2 21 2 4 1 2 sync type 2 21 2 4 1 3 pixel rate 2 21 2 4 1 4 light output 2 21 2 4 2 CRT Specifications 2 21 2 4 2 1 heater voltage 2 21 2 4 2 2 cathode spot cutoff voltage 2 21 2 2 2 3 max to min cutoff ratio 2 21 2 4 3 Block Diagram 2 22 2 5 Circuit Descriptions 2 22 2 5 1 Preamplifier LM1282 2 22 2 5 2 CRT Driver LM2405 ...

Page 6: ...vi API Confidential No Copy Reproduction Allowed 7299sl Service Guide Appendix A A 1 ...

Page 7: ...uto range power supply 0 26mm dot pitch CRT User controls Power switch Auto Calibrating Control keys On screen control keys for user Enter key enter sub menus or select items Exit key Enter OSD or back to main menus auto save or leave OSD Left key For left adjustment and enter contrast hot key function Right key For right adjustment and enter brightness hot key function Power on off indicator Powe...

Page 8: ...Wt Height cm 0 9 91 9 18 2 76 18 2 27 2 61 27 2 45 4 46 45 4 68 1 31 68 1 113 5 26 B Drop Sequence 2 1 5 3 4 6 Surface 2 Front 3 Bottom 4 Rear 5 Left 6 Right 1 Top Manufacturing joint Corner 5 3 2 select at weakness side the low left or right corner of the front panel An edge drop with impact on the shortest edge radiating from corner 5 3 2 An edge drop with impact on the next shortest edge radiat...

Page 9: ... Door opening mm Width 2 340 2 340 2 340 Height 2 280 2 280 2 585 Useable Interior Dimension Duducted pallet 130mm Operating spce 50mm Length 5 890 12 000 12 000 Width 2 330 2 330 2 330 Height 2 100 2 100 2 405 1 2 3 1 2 Air Transport Container Type Container 1 Container 2 Container 3 125 96 96 125 96 118 125 88 64 Gross 6 804 6 804 4 627 Weight Kgw Tare 129 129 129 Payload 6 675 6 675 4 498 Inter...

Page 10: ...imension mm Width 1130 X X Height 130 X X Air Transport Pallet Length 990 X X Dimension mm Width 1130 X X Height 130 X X 1 2 3 4 Container Carrying Capacity 2 3 4 1 Shipping Container Stowing Type Quantity of products sets Quantity of Products sets Quantity of pallet sets Every container Every Pallet Every Container 20 96 Pallet A 12 Pallet A 8 Pallet B X Pallet B X with pallet 40 240 Pallet A 12 ...

Page 11: ...Shipping Container Stowing Method 1 2 3 4 3 Air Transport Container Container Type Quantity of products sets Every container Quantity of Products sets Every Pallet Quantity of pallet sets Every Container Container 3048 2286 2438 120 Pallet A 20 Pallet B X Pallet A 6 Pallet B X ...

Page 12: ...irementas specified in ESD standard IEC801 2 1 2 6 Safety Requirements The display unit complies with the following safety standards and specifications 1 2 6 1 110V Version UL compliance standard for information technology equipment UL 1950 CSA compliance standard C22 2 No 950 M93 information technology equipment DHHS rules 21 sub chapter J as of date of manufacture 1 2 6 2 220V Version TUV compli...

Page 13: ...tics Plastic weight 25g shall be marked in accordance with ISO11469 3 Variety of Plastic All plastic components that weight 100g shall be made from the same type of plastic 4 Painting of Plastic Any plastic components that weight 100g shall not be painted lacquer or vanished so that the paint lacquer or vanish in dry matter exceed 1 weight of the plastic component Mould decoration IMD is not allow...

Page 14: ...SYNC A O Q P S video R VERTICAL Sync Polarity Positive Negative HORIZONTAL video D C B E PRESET TIMING 1 2 3 4 5 VGA VGA SVGA4 SVGA5 UVGA7 Fh 31 47kHz 31 47kHz 46 88 kHz 53 674 kHz 60 02 kHz Aus 31 77 31 77 21 333 18 631 16 66 Bus 3 81 3 81 1 616 1 138 1 219 Cus 1 59 1 59 3 232 2 702 2 235 Dus 26 05 26 05 16 162 14 222 13 003 Eus 0 64 0 64 0 323 0 569 0 203 Fv 70 08Hz 59 94Hz 75Hz 85 062 Hz 75 Hz ...

Page 15: ...k level will be between 0V and 0 1V 1 3 2 Power Supply Requirements 1 3 2 1 Input Power Requirements 1 Input Voltage Range The unit shall meet all the operating requirements with an input voltage range of 90 264 VAC universal 2 Input Current Maximum Input Current Measuring Range MAX 3 5 Arms 90Vac 264Vac 3 Frequency Range The unit shall operate within a frequency range of 47Hz to 63Hz 4 Inrush Cur...

Page 16: ...ent Anti Reflection Anti Static Coating Double focus 1 4 Functional Specifications All the tests to verify specifications in this section must be performed under the following standard conditions unless otherwise noted The standard conditions are Temperature 25 5 degree Celsius Magnetic field No additional magnetic field in near side CRT faces to East AC line input voltage 90Vac 264Vac 50HZ 60HZ C...

Page 17: ...ax as Fig 3 y1 or y2 4 Side Barreling 2 0 mm max as Fig 3 x1 or x2 5 Vertical Trapezoid 3 0 mm max as Fig 4 AD BC 6 Horizontal Trapezoid 3 0 mm max as Fig 4 AB CD 7 Tilt 1 2 mm max as Fig 5 b1 or b2 8 Orthogonality TCO99 H H H H 1 2 05 1 2 0 02 V V V V 1 2 05 1 2 002 D D D D 1 2 05 1 2 003 as Fig 5 9 Picture Centering 6 0 mm max as Fig 5 10 S curve 1 5 mm max 11 Linearity TCO99 1 max as Fig 2 x1 x...

Page 18: ... 1 00 to 3 55 18 E8 DPMS see Note 2 19 0F Red Green Bits Rx1Rx0Rxy1Ry0Gx1Gx0Gy1Gy0 1A 6E Blue White Bits Bx1Bx0By1By0Wx1Wx0Wy1Wy0 1B A0 Red x bit9 2 1C 57 Red y bit9 2 1D 48 Green x bit9 2 1E 9A Green y bits9 2 see Note 3 1F 26 Blue x bit9 2 20 10 Blue y bit9 2 21 47 White x bit9 2 22 4F White y bit9 2 23 A0 Established Timing I 24 43 Established Timing II see Note 4 25 00 Established Timing III 2...

Page 19: ...iption 4B FE ASCII String Monitor 4C 00 4D 4D 4E 6F 4F 6E 50 69 51 74 52 6F 53 72 54 0A 55 20 56 20 57 20 58 20 59 20 5A 00 Detailed Timing Description 3 5B 00 5C 00 This Detailed Timing Description 5D FE ASCII String Monitor 5E 00 5F 4D 60 6F 61 6E 62 69 63 74 64 6F 65 72 66 0A 67 20 68 20 69 20 6A 20 6B 20 6C 00 Detailed Timing Description 4 6D 00 6E 00 This Detailed Timing Description 6F FE ASC...

Page 20: ... Standard 6 5 Refer to the following bit definitions Identified by the level of reference white volts above blank followed by the level of the sync tips in volts below Blank Bit 6 Bit 5 Operation 0 0 0 700V 0 300V 1 000V p p 0 1 0 714V 0 286V 1 000V p p 1 0 1 000V 0 400V 1 400V p p 1 1 0 700V 0 000V 0 700V P P 4 Setup If set the display is set to expect a blank to black setup or pedestal per the A...

Page 21: ...1 bit Established Timings 1 Source 7 640 400 70Hz 720x400 VGA IBM 6 720 400 88Hz XGA2 IBM 5 640 480 60Hz VGA IBM 4 640 480 67Hz Mac II Apple 3 640 480 72Hz VESA 2 640 480 75Hz VESA 1 800 600 56Hz VESA 0 800 600 60Hz VESA Byte 2 bit Established Timings II 7 800 600 72Hz VESA 6 800 600 75Hz VESA 5 832 624 75Hz Mac II Apple 4 1024 768 87Hz interlaced IBM 3 1024 768 60Hz VESA 2 1024 768 70Hz VESA 1 10...

Page 22: ...tion the embedded function appears as PORT1 to the hose system The four expansion ports are number 2 through 5 2 I2C Interface The I2C bus is used to interface to an external micro controller needed to control the operation of the hub when the SUB chip need to communicate with the micro controller if asserts an interrupt signal The micro comptroller services this interrupt by reading the appropria...

Page 23: ...ty Impurity should not appear in the pattern of all green all blue all red or all white the brightness is 0 to max Ft L and the screen display is set to east direction 1 4 2 4 White Balance The following 5 different white balance is required to meet the specifications of x y variety value 4 when the unit is set to 28 Ft L full white pattern cut off and the specifications of x y variety value 10 wh...

Page 24: ...e or leave OSD Left key For left adjustment and enter contrast hot key function Right key For right adjustment and enter contrast hot key function OSD Operation procedure A Contrast hot key mode 1 Press Left key to enter contrast hot key mode 2 Press Left and Right keys to do the adjustments B Brightness hot key mode 1 Press Right key to enter brightness hot key mode 2 Press Left or Right keys to ...

Page 25: ... Enter for RGB adjustment There are 5 color mode Color mode Color Temperature Preset C1 9300K C2 6500K C3 5500K C4 7100K C5 11500K Press Enter key to enter RGB adjust function Press Left or Right keys to scroll light panel to desired items There are 4 items R Red gain adjustment G Green gain adjustment B Blue gain adjustment Reset to Default Press Enter to select the items Then press Left or Right...

Page 26: ...g 1 5 1 3 Outer Appearance See Fig 6 Fig 7 1 5 2 Construction and Materials on outer surface Materials Plastic Color Light Gray 1 5 3 Base Swivel Tilt 5 15 degrees Swivel 45 45 degrees 1 5 4 Marking Labels 1 5 4 1 Reference Label Rear panel 1 Reference numbers 2 Manufacture data 3 Agency Approvals 4 Power Ratings 1 5 4 2 Controls Connectors 1 AC power cord input abbreviated labels 2 User s Control...

Page 27: ...g elements Operating Controls see section 4 3 Power Connectors see section 3 2 1 6 3 3 Cover Removal Access ALL sub assemblies and internally adjustable components may be accessed by removing the bucket and the bezel together 1 6 4 Equipment Tools Required 1 6 4 1 Standard Test Equipment 1 Voltmeter 2 Dual trace oscilloscope 3 High voltage probe 4 Hand tools required 5 Color analyzer Minolta CA 10...

Page 28: ...duction Allowed 7299sl Service Guide Fig 1 Linearity Measurements X1 X2 X3 X4 X6 X7 X8 X9 X10 X11 X18 Y0 Y1 Y2 Y3 Y4 Y5 Y8 Y10 Y7 Y6 Y11 Y12 Y13 X5 Y9 Xmax Xmin X 100 5 Xmax Xmin Ymax Ymin X 100 5 Ymax Ymin Fig 2 Pincushion Measurements ...

Page 29: ...I Confidential No Copy Reproduction Allowed 1 23 A C E G x1 x2 y2 y1 B x y AC EG 2 AG CE 2 represented as display area width and height Top Bottom Pincushion y1 or y2 Side Pincushion x1 or x2 Linearity TCO99 x1 x or y1 y ...

Page 30: ...oduction Allowed 7299sl Service Guide Fig 3 Barreling Measurements A C E G x1 x2 y2 y1 x y AC EG 2 AG CE 2 represented as display area width and height Top Bottom Pincushion y1 or y2 Side Pincushion x1 or x2 Linearity TCO99 x1 x or y1 y ...

Page 31: ...tial No Copy Reproduction Allowed 1 25 Fig 4 Trapezoid Measurements 2 0 2 0 2 0 2 0 2 0 2 0 2 0 D C B 2 0 A Each of the 4 corners of picture shall fall within the relevant area F illustrated up hatched ABCD is the picture outlines ...

Page 32: ... 7299sl Service Guide Fig 5 Picture Distortion Phase Measurements b2 a1 b1 a2 Tilt orthogoal A B C D V2 H2 Peak Total H1 V1 D1 D2 V Cent A B 6mm H Cent C D 6mm Orthogonality TCO99 H H H H 1 2 05 1 2 0 02 V V V V 1 2 05 1 2 0 02 D D D D 1 2 05 1 2 0 03 ...

Page 33: ...System Overview API Confidential No Copy Reproduction Allowed 1 27 Fig 6 Physical Distortion Front ...

Page 34: ...1 28 API Confidential No Copy Reproduction Allowed 7299sl Service Guide Fig 7 Physical Distortion Side View ...

Page 35: ...eo Amplifier Micro controller DDC Horizontal Vertical Deflection Circuit Switching Power Supply Power Saving 90 264 VAC VGA signal source Yoke HV Generation RS 232 Interface HV 1 2 3 4 5 6 7 8 9 10 11 12 13 14 19 CRT FIGURE 1 99sl System Block Diagram 2 1 2 Deflection and HV generation circuit introduction 2 1 2 1 Deflection and HV generation circuit block diagram ...

Page 36: ...HV generation circuit block diagram As FIGURE 2 the 99sl monitor is difference with another monitor the 99sl monitor use separated Hor output circuit One is H size processing circuit another is high voltage processing circuit Separated Hor output circuit has a big advantage excellent high voltage regulation so this monitor adopts the advantage to get perfect picture 2 1 2 2 99sl Function Block of ...

Page 37: ...401 AutoSync Deflection Controller IC304 TDA4856 Vertical Deflection Yoke G1 To Video HV 27KV Horizontal Deflection Yoke EW DRV V Focus Parabola H Focus Parabola H H V Sync Input V Sync Input From Micro Controller I2C control input HDRV ABL Q301 To Video H Blank Q352 H blank To Video AFC Extract C3902 AFC Sawtooth wave Generation Q391 H Size HOR F V VOUT1 VOUT2 CLBL V Focus Parabola IC401 FOCU S H...

Page 38: ...s are controllable by I2C bus TDA4856 provides synchronization processing horizontal and vertical synchronization with full autosync capability a TV VCR mode and very short settling times after mode changes External power components are given a great deal of protection The IC generates the drive waveforms for DC coupled vertical boosters such as TDA486X and TDA8351 TDA4856 provides extended functi...

Page 39: ... 5 R3924 and R3925 is set fhmax and fhmin of the horizontal oscillator which make 99sl monitor that have 28 5KHz free run mode and horizontal hold frequency range are from 30KHz to 98KHz 2 1 5 99sl Vertical Output Circuit VI FBK VO GUARD 9 8 VO A VFB 7 6 GND VO B VP I2 DRIVE I1 DRIVE 5 4 3 2 1 4 3 R215 R211 RF208 R210 R216 C214 R207 R205 RF209 C201 IC201 C208 VDY C205 D201 D202 C207 C202 TR201 Q25...

Page 40: ...7K 1K 220K 1 4W 10M 100V 0 01U PE BRITE BLANK 24V H MUTE 210V G1 200V R256 FIGURE 7 99sl Spot killer and G1 circuit When the monitor turn off power Horizontal and vertical defection will be stop fast but monitor will have light spot appear in screen which will destroy CRT at center screen so monitor need spot killer circuit to prevent this light spot The spot killer circuit show in FIGURE 7 is use...

Page 41: ...Q411 IC401 3P 1 4W 330 B647 15K 12K 47K 2W 56 10K 1K 4 7K 100V OPEN PE D667 LM324 TILT 24V 12V 12V TILT COIL Fig8 Tilt circuit IC401 LM324 is offered for voltage amplifier to supply 0 24 at op amp output terminal The amplifier signal is input to tilt coil via Q411 Q412 current amplifier to get positive and negative coil current for tilt adjustment ...

Page 42: ...ze control in order that factory can adjust H size just overscan at 31KHz mode and overscan at every modes In order to assure every modes from 31k to 98kHz overscan a H size control signal is fed to pin4 of IC304 and make every modes overscan fully Finally the sawtooth waveform is fed to pin11 of IC304 PWM compactor 1 2 3 VI VO GND N C FOCUS HUNLOCK SCL SDA ASCOR VCC DGND SGND HDRY PGND HPLL2 I C ...

Page 43: ...ventional H size output circuit Conventional H output circuit has a positive collector pulse from 0V up to 1200V Q321 forms PWM converter to accept PWM pulse and vary Q321 On Off duty 2 1 13 Top ringing eliminated circuit L304 R363 C332 constitutes top ringing eliminated circuit to reduce ringing at top of picture 2 1 14 H driver circuit HDRV signal is come from IC304 pin7 and is driverd by Q308 a...

Page 44: ... 068U MPS SLA5046 1 2W 100K 5W 100 250V 1 0U MPS SLA5046 10K 47K 47 50V 0 1U MONO Right 1N4148 H945 47K 47K H945 H945 SLA5046 10K 47 50V 0 1U MONO 250V 0 39U MPS TAI YANG 400V 0 18 PMA 50V 0 1U MONO 47 10K 1 2W 100K 4 7K 1K H945 2W 22 RGP10D 19 40102 001 5mH 12V 12V 12V 12V 12V 12V H PARA HBLANK 6 5V 6 5V H LINEAR SC1 SC4 SC2 SC3 SC0 1 1 1 0 1 0 1 1 1 0 0 0 0 0 1 1 42K Fh 50K 36K Fh 42K Fh 36K 90K...

Page 45: ...enter circuit 6 5 10 1 3 4 1 2 6 8 3 1 2 2 1 L319 L303 R3823 ZD316 R3820 L317 D307 D315 D335 L311 L304 L310 C300 C369 C344 C332 R363 R344 R345 R3918 C324 D316 L305 T304 HDY Q314 M307 C336 L318 R346 R3802 C3909 Q321 M306 R3805 R353 D314 D313 L307 BEAD 19 40102 021 22 1W 12V 22 BEAD 1N5818 UF5404 RGP10G BEAD 19 40102 001 5mH BEAD 100V 0 047U PE 500V 680P D 250V 0 1U MEF 250V 0 056U MEF 5W 22 5W 1 2W...

Page 46: ... R311 R324 R325 R323 R322 R313 R317 R352 R329 R326 R327 R355 R330 R319 C318 C312 C317 C364 C319 C315 D308 D305 T302 RF3929 C381 L307 JP301 D352 R328 Q390 C386 C385 C384 C3913 1N4148 PE 100V 0 047U HS 34 76101 011 BU2520DX HS 34 71508 002 IRF634 LM393 2 6 8V 2 3 6V 11 15244 05W 2 100V 1500P PPN MCR 100 A733 A733 H945 H945 H945 C2235 100V 0 1U PE 100V 0 0056U PE 100V 0 1U PE 100V 0 0033U PE 50V 0 1U...

Page 47: ...fig 8 we can find there is no H DY and Cs capacitor only FBT Lp and C317 C386 C384 C386 are exist The negative pulse at emitter of Q313 is resonant by C317 C384 C385 C386 and FBT Lp and the pulse width TR of negative pulse is t L C C C C us r p π 317 386 384 385 3 The emitter voltage Q313 is about 700Vpeak and subject to change with different patterns and different modes Q312 and T302 constitutes ...

Page 48: ...cuit The horizontal parabola signal is taken from Cs capacitor and amplified by T401 to acquire about 390Vpp amplitude at pin3 of T401 to combine with vertical parabola signal and input FBT focus pack 2 2 Microcontroller Cricuit Operation 2 2 1Introduction This model 7299sl will support powerful OSD function to help end user fine adjustment The Microcontroller circuit of the 7299sl can determine w...

Page 49: ...any adjustable parameters of the picture into EEPROM 5 To output data to OSD IC for making an on screen display control menu 6 The inner registers and PWM output of MCU can be controlled by the external PC alignment program 7 To calibrate the size position and geometry of the picture by pressing i key It will be placed right size and position 2 2 3 2 How to detect mode timing Only when the mode ti...

Page 50: ...ther is for saving user adjusted data the other is for common settings area where stored the data of the OSD color temperature settings contrast and brightness value 2 2 3 5 How to display the OSD menu The OSD IC of 7299sl is MC141542 which is developed by vender it receives the data of the OSD fonts and attribute what we want to display on the screen from the MCU by 2 wires of communication and e...

Page 51: ...pattern on screen NO YES NO 1 1 1 YES YES YES NO YES NO NO 2 3 Switching Power Supply Operation Theory 2 3 1 General Specification Input Voltage 90 264VAC UNIVERSAL Input Frequency 47 63Hz Output Requirement Output MAX Load Current 6 5V 0 8A 16V 1 0A 24V 0 25A 80V 0 1A 200V 0 3A 2 3 2 Block Diagram DEGAUSS CIRCUIT RFI FILTER RECTIFIER FILTER SWITCHING ELEMENT FEEDBACK CONTROL CIRCUIT ISOLATION TRA...

Page 52: ...U EL C629 N DC OUTPUT AC INPUT L When power switch is turn on the AC voltage is Rectifier and fliter by BD601 C629 The DC output voltage will be 1 4 ac input 2 3 3 3 switching Element and isolation transformer 2 1 8 4 6 15 16 13 14 12 11 10 9 6 C614 T601 VRT601 L609 D608 D604 D605 R626 C613 C630 R609 R607 R608 R611 R604 C629 R636 Q602 D612 ZD603 FR701 FR702 VRT602 L601 OPEN OPEN BEAD RGP10J RGP10D...

Page 53: ...e to produce a dc output and additional L1 C2 to suppress high frequency switching spikes 2 3 3 5 Control circuit K A G K A 3 4 VCC OUT ISSEN GND FB COMP R C VREF 7 6 4 3 5 2 1 8 2 1 C614 C622 IC703 IC603 D607 D606 D601 R613 C620 C618 C619 C612 C607 R609 R614 R607 R608 R611 R617 R615 R616 R703 R612 R625 ZD602 IC601 C615 CN703 5V 330P 50V 0 1U MONO 20 MCR100 3 MCR100 3 1N4148 1N4148 1N4007 51 1K 1 ...

Page 54: ...he duty cycle of MOSFET will be decided to control the output voltage CN702 CN701 G K A 3 4 2 1 R K A ZD704 ZD705 IC703 IC602 VR701 D710 R738 C716 R715 R717 R731 R730 C707 C715 R739 R729 Q70 D712 R617 R728 R703 ZD702 ZD703 IC702 1 2W 18V 1 2W 24V MCR100 3 TLP721F 200 1N4148 200 35V 22U 1K 10K 2 4K 1 2W 200K PE 100V 022u 50V 10U 150 470 H94 1N4148 4 7K 15k 1 4W 100 1 2W 18V 1W 82V TL431 6 5VA 6 5VA...

Page 55: ...he power supply 6 3V 16V 24V 80V and 200V output will be cut off The power input will be under 5W 2 4 Video Circuit 2 4 1 Design Specifications 2 4 1 1 input D sub connector 2 4 1 2 sync type separate sync composite sync 2 4 1 3 pixel rate 160 MHz 2 4 1 4 light output 3 block pattern 40F L brightness at cutoff and contrast at max light output full white pattern 28F L brightness at cutoff and contr...

Page 56: ... simultaneously The R G B DRIVE voltage controls the gain of these three guns individually to approach the white balance of CRT The HCLAMP signal is used to fix the black level of video signals after AC couple This is DC Restoration of the preamplifier The HBNK signal that is active low is used to pull the LM1282 outputs below 0 2V during non display period 2 5 2 CRT Driver LM2405 The IC102 LM2405...

Page 57: ... D C178 30U L103 105C 16V 100U EL C110 1N4148 D152 L100 bead 33 R117 50V 0 1U MONO C107 1N4148 D151 1N4148 D132 1N4148 D131 1N4148 D111 1N4148 D112 50V 0 1U MONO C118 390 R132 50V 0 1U MONO C116 50V 0 1U MONO C115 50V 0 1U MONO C114 50V 0 1U MONO C113 50V 0 1U MONO C112 50V 0 1U MONO C111 50V 0 1U MONO C109 50V 0 1U MONO C108 50V 0 1U MONO C100 50V 0 1U MONO C105 0 1U 50V MONO C104 50V 0 1U MONO C...

Page 58: ...00V 1U NP C172 1SS83 D143 1SS83 D163 D101 RGP10J 1SS83 D141 1SS83 D162 33 R153 50V 0 1U MONO C122 1SS83 D161 91 R158 91 R138 91 R118 470K R145 33 R133 500V 1000P D C126 2KV 0 01U D C135 2KV 0 01U D C134 1KV 100P D C133 1SS83 D142 1W SHORT R190 1 4W 470K R191 1 2W 560K R193 1 2W 33 R120 1 2W 10 R192 1 2W 33 R160 1 2W 33 R140 30U L102 105C 100V 33U EL C124 1SS83 D121 1SS83 D122 500V 0 01U D C123 33 ...

Page 59: ... Q112 Q132 Q152 emitter is about 80V 53V Because the blanking pulse at IC102 output is about 10V the control range of DC level at cathodes is about 70V 43V 500V 1000P D C128 SHORT L122 105C 100V 1U EL C169 SHORT L162 500V 1000P D C168 105C 100V 1U EL C129 105C 100V 1U EL C149 SHORT L142 500V 1000P D C148 220K R163 4 7K R161 30K R162 30K R142 4 7K R141 220K R143 220K R123 4 7K R121 30K R122 BF423 Q...

Page 60: ......

Page 61: ...ter of the screen plug the HECN Wire into M305 If raster center is near the right side of the screen plug the HECN Wire into M306 If raster center is near the left side of the screen plug the HECN Wire into M307 3 5 H size preset a Input mode 31K 640x480 with cross hatch pattern b Use OSD to adjust H size maximum c Adjust VR301 to make H size just overscreen 3 6 Factory setting mode adjustment 1 H...

Page 62: ...2 6500K X 313 5 Y 329 5 C3 5500K X 332 5 Y 348 5 C4 7100K X 305 5 Y 315 5 C5 11500K X 275 5 Y 275 5 c Press SPACE BAR to get 3 block and finish the adjustment 3 10 Clear all of user mode data After finishing all factory setting select Reset to default at MENU 1 then press enter 3 10 Geometry Specification ITEM DESCRIPTION SPECIFICATION 1 HORI SIZE 360 2 mm 2 VERT SIZE 270 2 mm 3 SIDE PIN 2 0 mm 4 ...

Page 63: ...on each downstream port remote wakeup detection and propagation from each of the downstream ports hub initiated remote wakeup on connect disconnect events hub overcurrent detection and reporting to the host overcurrent protection gang or per port configuration downstream current restoration overcurrent removed System Setup Position the CATC UHT box on the test bench near the USB hub to be evaluate...

Page 64: ......

Page 65: ...ep to maintain your Acer 7299sl when the system has any trouble System trouble category Maintain the 99sl all system Start LED Status Check SPS Dark LED Color Short circuit Flash Light Green Orange Picture Status Check MCU No power Check all circuits Good Bad geometry Bad video End Check deflection or MCU circuit Check video or OSD circuit Bad geometry Bad video Power saving No picture No picture ...

Page 66: ...ion failure RF3958 Q314 Q321 L3 04 R363 2 Horizontal one line Ver deflection failure IC201 RF209 ZD201 ZD202 C203 RF208 3 Bad focus Dynamic focus failure Q404 C402 Q403 T401 Q405 C403 4 Picture dimension too large HV less than 26KV Adjust VR302 5 Picture dimension too large HV feedback circuit failure IC302 IC301 D345 6 Picture dimension too small HV greater than 26KV Adjust VR302 7 Picture dimens...

Page 67: ...Q255 17 Geometry cannot be adjusted MCU or defection circuit failure IC801 IC304 18 ABL cannot be adjusted ABL circuit failure Q301 Q318 19 Tilt cannot be adjusted Tilt circuit or MCU failure IC401 Q411 Q412 20 Upper left and right picture distortion H size RLC filter failure L304 R363 C332 4 4 Trouble shooting for no picture No picture Start G1 voltage Blanking About 175V Normal Adjustable 40 30V...

Page 68: ...1 IC101 IC801 7 LED ON but no picture CRT heater burn out Replace CRT 4 5 Trouble Shooting for bad video Bad video Start Check OSD MCU for no OSD Check OSD MCU Check IC101 pin13 0 volt Normal Adjustable 0 4 volts Check OSD MCU for no video Check IC100 video input Check IC101 Replace IC101 Check OSD MCU ABL Normal Check ABL circuit Picture quality No picture No picture Check Cathode G1 G2 HV No vid...

Page 69: ...tion circuit failure Q122 Q142 Q162 IC1901 12 OSD cannot display OSD IC1901 13 Brightness cannot be adjusted G1 Circuit is abnormal Check G1 circuit 14 Picture is too bright dark G2 voltage too large Adjust G2 15 Picture is too bright dark G1 voltage too large ZD305 ZD306 Q256 Q253 4 6 Power supply NO OUTPUT Check Q602 ZD603 R607 R611 Check IC602 Check IC702 Check F601 BD601 ok Replace F601 BD601 ...

Page 70: ...in2 3 OSD IC DC level 1 3V 3 IC1901 pin10 pin16 output PWM Check F12M CKT on the Main Board on video Board check OSD IC pin2 3 oscillation IC1901 DC level 1 3V Check MCU IC801 Reset pin9 H to L ok Check IC801 BLANK L ok Check IC802 EEPROM ok Check IC801 pin 13 15 Check 1 pin12 ESDA 2 pin14 ESCL 3 IC802 data EEPROM Brightness Contrast Check DCLK DATA ok 1 On the Main Board a SCL IC801 pin 22 b SDA ...

Page 71: ...k OSD MCU for no OSD window Check 5V ok 1 IC1901 OSD IC pin4 6 17 Check 5V power and IC1903 Check IC1901 OSD IC pin2 3 have DC 1 3V with oscillation wave Check pin 2 3 and the R C CKT Check IC1901 OSD IC pin5 HBNK pin18 V ok Check HBNK V Check SCL SDA INPUT ok Check R1906 R1907 NO NO NO YES YES YES NO Start ...

Page 72: ......

Page 73: ... 123 DIODE FAST UF5404L 5302 D305 D315 06 4R060 151 DIODE BRI D 3SBA60 600V 4A 06 5R0F0 122 DIODE FAST 5TU Z47 1 5KV 5A D316 08 47216 354 CAP DISC Y1 4700P 250V C624 09 1061K 08C CAP EL 10U 350V C303 09 1061M 01C CAP EL 10U 450V C256 09 10716 08D CAP EL 100U 250V C365 09 22616 08C CAP EL 22U 250V C319 09 33717 084 CAP EL 330U 400V C629 11 10437 12K CAP PMH 0 1U 400V C338 11 15337 064 CAP PP 0 015U...

Page 74: ...00031 01C XTOR MOS TIP31 C TO 220 Q324 06 00100 052 SCR MCR100 6 400V 0 8A Q360 IC603 IC703 06 01906 010 TRANSISTOR 2SC1906 Q801 Q352 06 02235 010 XTOR 2SC2235 Y TO 92T Q312 06 1R003 110 DIODE S B 1N5818 30V D308 D307 06 1R040 030 DIODE REC 1N4004 400V D601 D602 06 1R040 120 DIODE FAST RGP10G 400V 1A D302 D348 D3703 D3704 06 1R0A0 120 DIODE FAST RGP10M 1KV 1A D401 D402 06 1R0A0 122 DIODE FAST UF40...

Page 75: ...G 03W CAP DISC 0 01U 500V C123 50 71M06 201 SINGAL C 13 15P 1860MM 56 0571M XXX CRT 19 M46EJC325X100 F01 60 71M03 XXX ASSY BASE C2800 002 99SL 60 71M16 XXX ASSY BZL C2800 002 60 71M17 XXX ASSY U C C2800 002 99SL 42 77504 021 BAG PE LDPE 900 800 ALL 44 74201 XXX CTN AB 574 545 600 47 71M03 001 CSN T L EPS BASE ATT 7299SL 47 71M04 001 CSN T R EPS BASE ATT 7299SL 47 71M05 001 CSN BTM EPS BASE ATT 729...

Page 76: ...2405 SIP 11P 04 02405 140 IC102 11 IC V R LM2940CT 04 02940 030 IC1903 12 IC V R UC3842 DIP 8P 04 03842 040 IC601 13 IC SYNC CTRL TDA4856 04 04856 071 IC304 14 IC V R 7812 TO 220 3P 04 07812 030 IC303 15 IC VERT DEFLECT TDA8351 DIP 04 08351 070 IC201 16 PHOTO TLP721F 05 00721 010 IC602 17 FET MOS FS14SM 12 600V 14A TO 3 06 00014 020 Q602 18 XTOR MOS TIP31 C TO 220 NPN P 06 00031 01C Q324 19 SCR MC...

Page 77: ...304 06 3R040 120 D705 42 DIODE FAST UF5404L 5302 06 3R040 123 D305 D315 43 DIODE BRI D 3SBA60 600V 4A 06 4R060 151 44 DIODE FAST 5TU Z47 1 5KV 5A 06 5R0F0 122 D316 45 CAP DISC 100P 1KV 08 1012A 13W C621 C305 C133 46 CAP DISC 100P 2KV 08 1012C 02W C3901 C414 C415 47 CAP DISC 1000P 1KV 08 1022A 13W C132 48 CAP DISC 1000P 500V 08 1022G 13W C148 C130 C168 C128C126 C12 0 49 CAP DISC 0 01U 500V 08 1031G...

Page 78: ...AP PMH 0 39U 400V 11 39437 12K C340 75 CAP MPP 0 47u 250V 11 47436 06K C3906 76 CAP PHA 5100P 1 8KV 11 5123S T5K C3909 77 CAP MPS 0 068U 400V 11 68337 12E C337 78 RES MOFM 10 J 3W 13 10036 07H R365 79 RES MOFM 100 J 5W 13 10137 074 R3918 80 RES MOFM 180 J 5W 13 18137 074 R328 81 RES MOFM 1 2 J 5W 13 1R237 074 R344 82 RES FMFR 22 J 3W 13 22036 09H RF3929 83 RES MOF 22 J 5W 13 22037 074 R363 84 RES ...

Page 79: ...BD 7299SL PHILIPS TCO MI 55 71M01 010 91 71M02 001 002 2 VIDEO BD 7299SL MI 55 71M02 001 91 71M02 001 002 3 XFORM FBT 7299SL T301 19 70054 001 91 71M02 001 002 4 CTN AB 574 545 600 7299C ACER 44 74201 001 91 71M02 001 002 5 CSN T L EPS BASE ATT 7299SL 47 71M03 001 91 71M02 001 002 6 CSN T R EPS BASE ATT 7299SL 47 71M04 001 91 71M02 001 002 7 CSN BTM EPS BASE ATT 7299SL 47 71M05 001 91 71M02 001 00...

Page 80: ...A 2 API Confidential No Copy Reproduction Allowed 7299sl Service Guide ASSY BASE C2800 002 99SL TCO99 60 71M03 011 91 71M01 002 ...

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