Product Service Manual – Level II Service Manual for BenQ: G2420HD P/N: 9H.L3ALB.QBx Applicable for All Regions Version: 001 Date:2009/05/26 Notice: - For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liability statements. - Please check BenQ’s eSupport web site, http://esupport.benq.com, to ensure that you have the most recent version of this manual. First Edition (May, 2009) © Copyright BenQ Corporation 2009. All Right Reserved.
Content Index Abbreviations & Acronyms .............................................................................. 3 1 About This Manual......................................................................................... 3 1.1. Trademark ............................................................................................................ 3 2 Introduction .................................................................................................... 4 2.1. 2.2. 2.3. 2.4. 2.5.
Abbreviations & Acronyms 1 About This Manual This manual contains information about maintenance and service of BenQ products. Use this manual to perform diagnostics tests, troubleshoot problems, and align the BenQ product. 1.1. Trademark The following terms are trademarks of BenQ Corporation: BenQ Importance Only trained service personnel who are familiar with this BenQ Product shall perform service or maintenance to it.
2 Introduction This section contains general service information, please read through carefully. It should be stored for easy access place for quick reference. 2.1. RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS. The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a legal requirement by EU (European Union) for the global electronics industry which sold in EU and some counties also require this requirement.
3 Product Overview 3.1. Specification 3.1.1 Introduction G2420HD is defined 24’W LCD Monitor supports WXGA (1920x1080) resolution with DPMS (Display Power Management System) and Senseye function. There are three different input types, D-sub, DVI and HDMI, of models. G2420HD adopts AUO panel, M240HW01 V2. The features summary is shown as below, *All panel spec. in service manual definition depends on the variance of panel source. *All spec. of monitor need to warm up at least 1hr.
Auto adjustment function supported DDC function supported (EDID ver. 1.3) DDC-CI support version 1.1 or later Audio speakers supported Audio Jack (input connector) supported Earphone Jack (input connector) supported Microphone function supported Mechanical Tilt base design VESA wall mounting design Mechanical Rotate design Mechanical Lift base design Kensington compatible lock design 3.1.2 3.1.2.
3.1.2.2 Item Signal interface Condition 15-pin D-Sub Signal Cable 24-pin DVI-D 15-pin D-sub connector 24-pin DVI-D connector 19-pin HDMI connector Signal type Level Impedance Pin assignment Analog input Impedance Sync Pulse Width (SPW) Level Impedance Digital input For 15-pin D-sub For 24-pin DVI-D For 19-pin HDMI Separate analog R/G/B 700 mV (peak to peak) 75 Ohms +/- 1.5 Ohms Separate H/V-sync Composite H/V-sync (Positive/Negative) Logic High: 2.4V ~ 5.5V Logic Low: 0V ~ 0.
Note-2: The pin assignment of 24-pin DVI-D connector is as below, 1 2 3 4 5 6 7 8 9 10 11 12 PSignal Assignment TMDS RX2TMDS RX2+ TMDS Ground Floating Floating DDC Clock DDC Data Floating TMDS RX1TMDS RX1+ TMDS Ground Floating Pin 13 14 15 16 17 18 19 20 21 22 23 24 Signal Assignment Floating +5V Power Ground Hot Plug Detect TMDS RX0TMDS RX0+ TMDS Ground Floating Floating TMDS Ground TMDS Clock+ TMDS Clock- Note-3: The pin assignment of 19-pin HDMI connector is as below, -8-
3.1.2.3 Item Video performance Condition Spec OK N.A Remark Both for analog and 170 MHz digital inputs Both for analog and 1920x1080@60 digital inputs 1920 x 1080 @ <5.89 ns 60Hz (50% of minimum pixel (max. support clock period) timing) Refer to VESA < 5% final full-scale VSIS Standard value V1R1 Refer to VESA < 12% of step function voltage level over the VSIS Standard full voltage range V1R1 Max. support Pixel rate Max.
3.1.2.
HDMI video support timing 3.1.3 Operational & Functional Specification 3.1.3.1 Video performance *All spec. of monitor need to warm up at least 1hr.
3.1.3.2 Item Brightness Adjustable Range Condition Spec OK NA Remark At default contrast level (Max. brightness value – Brightness adjustable (saturate point) & FullMin. brightness value) range white color pattern ≧ 100 cd/㎡ 3.1.3.3 Acoustical Noise Item Condition At 4 cm distance Acoustical Noise 3.1.3.
(3) Procedure: Confirmed sample with appearance and function ready before testing then compare with after test record as brightness, uniformity and contrast ratio. Perform random vibration after sine-wave vibration test. Test Spectrum: 20 Hz 0.0185(g2/Hz) 200Hz 0.
3.1.3.9 Audio performance (Ear-Jack, For HDMI audio only) Item Condition Spec OK NA Remark Preamp + Power amp (1)Output power 1 Wrms/CH @ 1KHz (2)THD (@ 1W) <1% (3)S/N ratio >40dB Speaker Driver (1)Nominal impedance 4 ohm (2)Rated input power 1 W/CH (3)Frequency response 180~20KHz SPL-10dB (4)Output sound pressure 84 ± 3 dB (1W 0.5M) level 2 (5)Dimension of box 284x60x27mm Audio Control (1)Volume range 0 ~100 levels (2)Mute On/Off 3.1.4 LCD Characteristics 3.1.4.
Color White Coordinates Luminance Uniformity Blue y White x White y 9 points measurement (CIE) [%] 0.04 0.283 0.299 0.07 0.313 0.329 75 80 0.10 0.343 0.359 White Luminance @ CCFL [cd/m2] 240 300 6.0mA (center) Crosstalk (in 75Hz) [%] 1.5 * The test methods for the above items definition, please refer to the relative panel specification. 3.1.5 User Controls 3.1.5.1 User’s hardware control definition Item Condition Power button Enter button Right/Inc. button Left/Dec.
Sharpness Display Information For input timing Volume For HDMI Audio only Mute For HDMI Audio only Hot key for Brightness Hot key for Contrast Hot key for Volume Hot key for Input Select Hot key for Mode The detailed firmware functions’ specification, please refer to C212 S/W spec. document. 3.1.6 Mechanical Characteristics 3.1.6.
3.1.7 Pallet & Shipment 3.1.7.1 Container Specification Quantity of products Stowing Type Container (sets) (Every container) 624 20' With pallet 1296 40' 20' Without pallet 40' Quantity of Products (sets) (Every Pallet) Pallet A: 76 Pallet B: 68 Pallet C: 24 Pallet A: 76 Pallet B: 68 X Quantity of pallet (sets) (Every Container) Pallet A: 4 Pallet B: 4 Pallet C: 2 Pallet A: 9 Pallet B: 9 X X X X X X X 3.1.7.2 Carton Specification Product: Net Weight (Kg) Gross Weight (Kg) 4.9Kg 6.
FIMKO CE Mark CB CB TUV/GS EMC X- Ray Requirement CCC (China) GOST SASO CE Mark FCC (USA) EN55022 CISPR 22 VCCI (Japan) BSMI (Taiwan) C-Tick (Australia) DHHS (21 CFR) DNHW German X- Ray standard PTB Ergonomics EN60950 73/23/EEC IEC60950 EN60950 EN60950 / EK1-ITB 2000:2003 CB4943 EN60950 IEC60950 89/336/EEC FCC Part 15 B Class B Class B VCCI Class B CNS 13438 AS/ NZS CISPR22 USA X- Ray Standard TUV / Ergo ISO 13406-2 prEN50279 - 18 -
3.2. Customer Acceptance 3.2.1. SCOPE This document establishes the general workmanship standards and functional Acceptance criteria for LCD color monitor model G2420HD Produced by BenQ Corporation. 3.2.2. PURPOSE The purpose of this publication is to define a procedure for inspection of the LCD monitor by means of a customer acceptance test, the method of evaluation of defects and rules for specifying acceptance levels. 3.2.3.
3.2.6. CLASSIFICATION OF DEFECTIVES A defective is a product which contains one or more defects. The defective will be classified into following classes. Critical defective A critical defective contains one or more critical and may also contain major and/or minor defects. Major defective A major defective contains one or more defects and may also contain minor defects but contains no critical defect.
3.2.10. TEST CONDITIONS Unless otherwise prescribed, the test conditions are as follows: . Nominal mains voltage Temperature: +5~+35℃ . Warm up time : 30minutes minimum . . Visual inspection shall be down with the distance from eyes to the sample 35-50 cm . . Display mode: Primary mode 1920 x 1080 3.2.11. TEST EQUIPMENTS 1. PC with display adapter or other specific display adapter which is agreed upon by both parties 2. Test program by BenQ 3. Ruler 4. Power saving test tool 5.
No 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 3.20 3.21 3.23 3.24 3.25 3.26 3.27 3.28 3.29 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 Description Poor print of logo or name plate Label on product Wrong or missing Scratched or dirty but legible spec. label GAP between LCD and front bezel is over 2.0 mm Dot/area discolor over 1mm dia. in front or over 2mm dia. in other areas Cabinet warped, sagged or bulging ＞0.
3.2.13. OPERATIONAL INSPECTION CRITERIA 1. TEST PATTERN 2. SPECIFICATIONS 3. OPERATIONAL INSPECTION CRITERIA 3.2.13.1. List of test pattern KEY A E PATTERN FULL WHITE DARK TEST ITEM H - Size , V – Size .Viewing Angle Light Output Impurity, Spot check Contrast Ratio Brightness adjust Range Background, Spot check F FULL W , R , G , B Impurity, Spot check .
3.2.13.2. Video performance Item Spec Max. support Pixel rate Max. Resolution OK 170 MHz 1920x1080@60 Rise time + Fall time <5.89 ns (50% of minimum pixel clock period) N.A Remark Both for analog and digital inputs Both for analog and digital inputs Settling Time after < 5% final full-scale value overshoot /undershoot < 12% of step function Overshoot/Undershoot voltage level over the full voltage range 1920 x 1080 @ 60Hz (max.
4 Level 1 Cosmetic / Appearance / Alignment Service 4.1. Software / Firmware Upgrade Process 4.1.1 Hardware Requirement: 1. I2C board x 1 (a.Print Board b. I2C Board) 2. DSUB VGA cables x 2 3. Printer cable (with one male connector and another female connector) x 1. 4. PC or Notebook with parallel (printer) port x1.
Link “I2C BD, Power cable and Signal cable 4.1.2 Software prepare 1. Realtek.exe Step 1: Press RTD Tool Step 2: Choose “ IIC”, “Serial Flash” and “0x94”. Then, press “ISP” 1. 2.
Step 3: Click the “Bank” and Find the F/W 1. xxx.H00 2. xxx.H01 3. xxx.H02 4. xxxEXT.Hex Step4: Choose “P-Flash” and “Auto” Step5: Press to run the program Step6: Check result, If the words showed in red, need to run the program again 3. 6. 4. 5.
4.1.3 EDID Upgrade Procedure Step 1: Run the program “Q-EDID-V016.
Step 2: Click “Open File” and select “VGA” or “HDMI” EDID file Step 3: If load file is successful, it shows “Open EDID Table OK.
Step 4: If write EDID is successful, it shows ”Write EDID OK …” And then, click “Read EDID” button to check if successful or not.
4.2. Alignment procedure (for function adjustment) A. Preparation: 1. Setup input timing ICL-605( 1280x1024@75Hz ), Pattern:5-Mosaic. 2. Setup unit and keep it warm up at least 30 minutes. B. Timing adjustment: 1. Enter factory setting area (press “ENTER”, “MENU” and then press “SOFTPOWER”). 2. Check the settings to following values: Contrast = 50 Brightness = 90 Color = User Mode Senseye mode = Standard Language = English Burn In =ON Then, turn off the monitor power. 3. Turn on power enter user area. C.
D. Color adjustment: 1. Setup input timing ICL-605, white pattern. 2. Confirm auto color adjustment had already done. 3. Measure color temperature by Minolta CA-110 (or equivalent equipment). 4. Check the color temperature Bluish, Reddish & Normal. The color temperature specification as follows: White Balance X+0.283+(-) 0.015 (Bluish, 9300K set on OSD) Y+0.297+(-) 0.015 White Balance X+0. 326+(-) 0.015 (Reddish, 5800K set on OSD) Y+0. 342+(-) 0.015 White Balance X+0.313+(-) 0.
F. Command definition : PC Host will send 0x7C IIC slave address and then following 4 bytes command Byte Byte I2C Send Command Byte1 2 3 Byte4 OK N.A. Remark cksu Write Contrast to MCU RAM CA 55 Data m cksu Write Brightness to MCU RAM CA 56 Data m cksu Write data to MCU RAM Write Red Gain to MCU RAM CA 57 Data m and update the related cksu register to refresh the Write Green Gain to MCU RAM CA 58 Data m screen immediately. Don’t store data to cksu EEPROM.
Write Cx R-Gain Data to EEPROM AA 7C Write Cx G-Gain Data to EEPROM AA 7D Write Cx B-Gain Data to EEPROM AA 7E Write Contrast to EEPROM AA 92 Write Brightness to EEPROM AA 93 Write C/T index to EEPROM AA Write OSD-Hpos to EEPROM AA Write OSD-Vpos to EEPROM AA cksu Data m cksu Data m cksu Data m cksu Data m cksu Data m Reserved for some model have extra color temperature 1=C1/9300/Bluish, 2=C2/6500/sRGB/, 3=C3/5800/Reddish, 4=User, 5=Cx cksu 1~4 m cksu 95 Data m cksu
Read C2 (sRGB) B-Gain data from EEPROM Read C3 (Reddish) R-Gain data from EEPROM Read C3 (Reddish) G-Gain data from EEPROM Read C3 (Reddish) B-Gain data from EEPROM A3 4E XX A3 5C XX A3 5D XX A3 5E XX Read User R-Gain data from EEPROM A3 6C XX Read User G-Gain data from EEPROM A3 6D XX Read User B-Gain data from EEPROM A3 6E XX Read Cx R-Gain data from EEPROM A3 7C XX Read Cx G-Gain data from EEPROM A3 7D XX Read Cx B-Gain data from EEPROM A3 7E XX Read Contrast from EEP
Read OSD Rotation from EEPROM Change Color Temp. to C1/9300K/Bluish Change Color Temp. to C2/6500K/sRGB Change Color Temp. to C3/5800K/Reddish A3 9F CC 01 CC 02 CC 03 Change Color Temp. to User CC 04 Change Color Temp.
cksu Data m cksu Data m cksu Data m cksu Data m cksu Data m cksu Data m cksu Data m cksu XX m cksu XX m cksu XX m cksu XX m cksu XX m cksu XX m cksu XX m cksu XX m cksu XX m cksu XX m cksu XX m NA NA NA NA Increase ADC B-Gain AC 35 Decrease ADC R-Offset2 AD 23 Decrease ADC G-Offset2 AD 24 Decrease ADC B-Offset2 AD 25 Decrease ADC R-Gain AD 33 Decrease ADC G-Gain AD 34 Decrease ADC B-Gain AD 35 Read ADC R-Offset2 AE 23 Read ADC G-Offset2 AE 24 Read ADC B-Offset2 AE 25 Read A
Change Power Status cksu D0 Data XX m Change Language Type ckssu D1 Data XX m PowerOFF: Data=AA PowerON: Data=Other Value Asia: Data=AA European: Data=Other Value EEPROM Bank R/W (For Debug using only, not for Production Line Write EEPROM directly) Addr cksu Read EEPROM Bank 0 B0 ess XX m Addr cksu Read EEPROM Bank 1 B1 ess XX m Addr cksu Read EEPROM Bank 2 B2 ess XX m (For 24C08 type) Addr cksu Read EEPROM Bank 3 B3 ess XX m (For 24C08 type) Addr cksu Write EEPROM Bank 0 B8 ess Data m A
5 Level 2 Disassembly /Assembly Circuit Board and Standard Parts Replacement 5.1.
5E.0BJ06.001 5E.0RM03.001 5E.0RM02.001 5E.0RM01.011 5F.LUDB0.051 * This Service BOM is subject to change. Please check it on eSupport and SPO system before service parts order release.
5.2. Disassembly /Assembly 5.2.1 Disassembly SOP Preparation before disassemble 1. Clean the room for disassemble 2. Identify the area for monitor 3. Check the position that the monitors be placed and the quantity of the monitor; prepare the area for material flow; according to the actual condition plan the disassemble layout 4.
3 Turn over the monitor ,dismantle the Rear cover from the monitor(if it have earphone function, pull the earphone wire out of the connector) 4 Pull the c/b wire out of the c/b connector. Tear off the C/B wire from panel ,move away C/B and button 5 Tear off the big aluminum foil.
6 Tear off the two acetic tapes (if it have that ) Pull out the light wires from connector .
9 Tear off the yellow tape on the LVDS FFC ,and pull LVDS FFC out off the panel . 10 Disassemble the hexangular screws ( four or two ) 10 Turn over the BKT , and disassemble the power board and I/F board .
5.2.2 Assembly SOP Preparation before assemble 1. Clean the room for work 2. Identify the area for material 3. Prepare the implement, equipments, materials as bellow: 1) Press-fixture 2) working table 3) Screw-driver 4) knife*1 5) glove 6) cleaning cloth 7) ESD protection ite m picture Operation Put panel on the cushion carefully, 1 2 Fetch I/F board and LVDS FFC ,insert FFC into I/F .
4 Lock PCBA screw .-five or six PCBA screw ,one earth screw . 5 Turn over the bkt, and lock the hexangular screws ( four or two ) Screw driver:5+0.6kg Lock one HDMI screw (if it have that ) Screw driver: Side mount: 3±0.6 Other: 4±0.
8 Fetch yellow tape, and stick it on the LVDS FFC 9 Use location tool ,location the bkt on panel 10 Stick tapes follow standard: One tape stick on angel side ,one on right side ,one on ground side . Stick acetic tapes on left 11 Insert light wires, and make sure it connect well . Use two acetic tapes fix the light wires .
12 Stick big aluminum foil on the side (like left PIC) 13 Fetch bezel ,and put panel into bezel (don’t touch the LCD screen. 14 Put c/b in the button, and put button in bezel. Tear the tapes on the back of c/b wire , insert c/b connector in I/F ,stick c/b on panel . 15 Fetch cover ,cover the monitor .( if it have ear phone function ,assay earphone board on cover first, and insert the wire into I/F ) First cover bottom ,then cover two sides ,last cover the angel side .
16 Assay stand .(follow picture on left .) put hinge in front cover ,and lock four screws, then cover the back cover ,last put the clip in front cover. Screw driver : 7.5+0.5kg 17 Put stand in monitor, and lock two screws . Screw driver : 9.0+1.0kg 18 Fetch base ,and assay base on monitor .
5.3. Main-Shielding Position 機種名稱 BenQ G900HD BenQ G2220HD BenQ G2020HD BenQ G2410HD AUO BenQ G2410HD CMO BenQ T2200 BenQ G2420HD/G2420HDB 測點A尺寸 56.69mm 84mm 69mm 78.65mm 72.65mm 56.69mm 78.65mm 測點B尺寸 40mm 44.5mm 42mm 57.2mm 55.85mm 40mm 57.2mm 測點C尺寸 40mm 44.5mm 42mm 57.2mm 55.85mm 40mm 57.
5.4.
5.5. Block diagram The G2420HD is a 24” (1920x1080) Model, LCD type is TN+ Film and Normally White, 16.7M colors(R, G, B 6-bit data+ FRC data) TFT LCD monitor. There are D-SUB, DVI and HDMI interface LCD monitor. It’s compliant with VESA specification to offer a smart power management and power saving function. It also offers OSD menu for users to control the adjustable items and get some information about this monitor.
5.6. Trouble Shooting Guide 5.6.1 No Display or display is unstable on analog, digital or video port: No picture or picture unstable on Analog port or DVI port or HDMI port Power off Y Turn on power N Does cable plugs in connector? N Plug the cable then turn on power again.
5.6.2 BUTTON Function: OSD is not working Yes No Plug control BD then retry Is control BD connecting? Yes Yes Is bottom key normally? Replace control BD then retry No Replace Control BD Is OSD working?? No Check Interface BD 5.6.
5.6.4 Power no work troubleshooting 5.6.4.1 DC/DC converter Panel or I/F BD or Audio no function DC/DC converter +5V(+5.
5.6.4.
5.6.4.
5.7. Circuit Operation Theory A-1.) Interface board diagram: A-2.
(b) Circuit operation theory A basic operation theory for this interface board is to convert analog signals of Red, Green and Blue to digital signals of Red, Green and Blue. The scaling IC has internal A/D converter, internal OSD, built in RSDS transmitter and auto-detect input timing functions. A/D converter is convert analog signal to digital data. OSD is offering adjustable functions to end-user. Detect timing is for detect change mode.
(5) “Auto” key: to perform auto adjustment (6) LED: It indicates the DPMS status of this LCD monitor; blue light means DPMS on (Normal operating condition). Amber light means DPMS off (Power Saving). A-3.) Power board diagram: EMI Filter Rectifier and filter PWM controller Isolation power transformer Rectifier and filter Switching element Rectifier and filter Inverter circuit SW regulator Feedback Isolation Fig.1 #1 EMI Filter This circuit (fig.
#2 Rectifier and filter AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output voltage is 1.4*(AC input). (See Fig.3) E1 3 L6 GSIB4A60-LF BD601 + + 1 2 4 - 1 ~ C605 150U 450V 2 ~ Fig. 3 #3 Switching element and Isolation power transformer When the Q601 turns on, energy is stored in the transformer. During Q601 turn-off period, the stored energy is delivered to the secondary of transformer. C614, R607, C607 and D601 are snubber circuits.
#4 Rectifier and filter D701, D702, C701, C702, C703 are used to produce DC output. (See Fig.5) A1 J A2 + R702 100 3 C704 1000P K C705 1000P K 10 11 5 4 6 8 Fig.
#5 PWM Controller The TEA1530(A)T can be used in Fixed Frequency converter designs for low voltage, high current applications. At low power (standby) levels, the system operates in cycle skipping mode which minimizes the switching losses during standby. The proprietary high voltage BCD800 process makes direct start-up possible from the rectified universal mains voltage in an effective and green way. A second low voltage BICMOS IC is used for accurate, high speed protection functions and control.
#6 Feedback circuit PC123 is a photo-coupler and KA431 is a shunt regulation. They are used to detect the output voltage change and be the primary and secondary isolation. When output voltage changes, the feedback voltage will be compared and duty cycle will be decided to control the correct output voltage. (See Fig.7) R708 2K 1 R711 22K F C709 0.1U K 2 R709 10K F K IC602 PC123FY 1J00F 3 4 R707 10K A R IC702 R712 3.32K F KA431AZT A_NL Fig.
IC851(TL1451) is a 2-way PWM control IC. C851/R851 determine the frequency of PWM. Pin 1IN+/1IN- and 2IN+/2IN- are the inputs of the error amplifiers. 1IN+/2IN+ are used as the feedback pins for DC-DC circuit. 1DTC/2DTC are used for determining the threshold states of dead time control. C854, C855, C857, C858, R855 and R873 are used for gain/phase compensation. P11 V-INVERTER C853 1U M R856 330K F851 32V 2A R853 10K F C855 0.
P-MOSFET Q852 is used for switching of step-down converter. And FD852/FD853 are the flywheel diodes. R874/R875 determine the feedback to IC851 to set up the output to +5V or +3.3V. V-INVERTER 9 Q852 2SJ598 VCC 11 10 2OUT S D A R874 3.09K F FD853 ERB83-004 C869 1200P K 1 C Q856 2N3906S B FD852 ERB83-004 + C871 220U 25V C868 470P K R882 22 C R862 2.7K J Q855 PMBS3904 P10 E E B K K R872 22K R871 3.
K Full-Bridge Configuration ZD801 TZMC6V2 Q801 P_A 3 A R801 5.1K 4 5 6 8 7 N_B C827 4.7U M R811 10K Q802 K 3 P_C C829 4.7U M T 801 . 5 1 2 6 4 A FD801 ERB83-004 . 3 4 7 . 5 6 8 7 N_D . 2 2 1 1 R812 10K 8 Fig. 1 Fig. 1: Q801, Q802 and T801 form a full-bridge configuration. The full-bridge switch is configured such that Q801 N-MOS and Q8026 P-MOS are ON while Q801 P-MOS and Q802 N-MOS are OFF in a half-cycle.
Feed-back Circuit C815 100P J F1 TP801 TP802 C819 5PF D 6 . C820 470P J . 3 4 7 . 10 11 12 13 14 15 NDR2 PDR1 GNDP VDDA TIMER PWM ISEN OVPT ENA PDR2 GNDA RT1 CT SST/CMP VSEN 8 7 C816 100P J 8 C821-2 . 2 1 6 5 A K 2 2K62272102 A R831 D801 511 F BAV99 TP803 TP804 C821 5PF D 1 2 CN802 1 2 2K62272102 R821 100K R816 2.2K C822 470P J R822 20K F 4 3 2 1 K C814 0.033U K R834 1M D809 LL4148 1 R820 20K F J 16 NDR1 OZ9933 9 K C831 0.22U K F3 IC801 R815 2.
Appendix 1 – Screw List / Torque STANDARD SCREW TORQUE SPEC. ITEM P/N 1 8F.205B4.019 2 8F.5A224.6R0 8F.EA324.6R0 3 4 5 8F.5A356.8R0 6K.L8810.001 6 8F.00273.6R0 7 8F.VZ524.6R0 8 8F.00518.100 9 8F.00003.143 DESCRIPTION MOUNTING MATERIAL HOLE TORQUE SIZE (KG-CM) (MM) Metal; D-SUB;DVI 5.0±0.6 Connector Metal Side mount: SCRW MACH Metal to metal 3±0.6 Plastic to Other: FLATM3*0.5P*6L ZN metal 4±0.
10 8F.VG234.6R0 SCRW TAP PH W/F M3*6 TP-S ZN Aluminum (Heatsink) Metal Metal to metal Metal SCRW TAP Metal to metal 8F.HA334.8R0 FPHM3*6(6/1)TP-S B-ZN Plastic to metal Metal SCRW MACH FLAT M4*8L Metal to metal 8F.5A456.8R0 C-ZN NYLO Plastic to metal Metal SCRW TAP CAP Metal to metal 8F.WA324.6R0 M3*1.34P*6L B-NI Plastic to metal Metal 8F.XA324.5R0 SCRW TAP M3*5L B-ZB Metal to Plastic Metal SCRW MACH PAN M4*5L Metal to metal 8F.1A526.5R0 NI Plastic to metal 11 8F.VZ526.
22 23 8F.00608.6R0 8F.XA313.8R0 24 8F.WA314.8R0 SCRW TAP PH F/10WSH M3*6L B-ZN SCRW TAP FLAT/PT M2.5*8L B-ZN SCRW TAP CAP M3*1.34P*8L B-ZN 25 8F.XA224.6R0 SCRW TAP FH M3*6L ZN 26 SCRW TAP FLAT 8F.XA314.8R0 M3*1.34P*8L B-ZN 27 8F.00607.8R0 SCRW TAP FPH M3*8L(5/0.8) B-ZN 28 8F.5A322.2R4 SCRW MACH FLAT-P M2*2.4L B-ZN 29 8F.00551.3R0 SCRW M FPH M2*3L (6/1.4) NI 30 8F.MA324.5R5 SCRW TAP FPH M3*5.5L B-ZN 31 SCRW TAP FLAT M4*10L B-ZN 8F.XA326.
Appendix 2-Physical Dimension Front View and Side view Fig.
Fig.
