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Akai DVLX44C1 Service Manual

Rear projection tv
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Section
Revision 0.0 -- 32 October 2004
Initial release
Revision 0.1 -- xx yyy 2004
Revision 0.2 -- xx yyy 2004
service_manual_i
10 December 2004
Rear Projection TV
Service Manual
Prepared by
Digital Video Labs, Inc.
6185 Paseo del Norte, Suite 200
Carlsbad, CA 92009
10 December 2004
Revision Summary
Change Synopsis
DVLX Confidential
- 1 -

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  • Page 1 Rear Projection TV Service Manual Prepared by Digital Video Labs, Inc. 6185 Paseo del Norte, Suite 200 Carlsbad, CA 92009 10 December 2004 Revision Summary Section Change Synopsis Revision 0.0 -- 32 October 2004 Initial release Revision 0.1 -- xx yyy 2004 Revision 0.2 -- xx yyy 2004 service_manual_i DVLX Confidential...

  • Page 2: Table Of Contents

    Rear Projection TV Service Manual Table of Contents Scope ..............................3 Important Safety Instructions......................3 DVLX4xCx Description .......................... 3 Product Designation ........................3 Product Architecture ..........................4 Critical Subassemblies ........................4 Block Diagram ..........................6 Product Test Environment ........................7 Service Procedure ..........................10 E-Box Disassembly &...

  • Page 3: December

    Rear Projection TV Service Manual Scope This Service Manual provides detailed service operations for Digital Video Labs, Inc. (DVLX) Digital Light Processing™ (DLP™) Rear Projection Television (RPTV), designated DVLX4xCx. This Service Manual is intended for the reference of qualified maintenance personnel servicing the DVLX4xCx. Important Safety Instructions Please pay attention to the following important safety instructions before carrying out the maintenance work.

  • Page 4: Product Architecture

    Rear Projection TV Service Manual Table 1: DVLX4xCx Products Screen Bezel/Enclosure Designation Diagonal Configuration DVLX44C1 44" DVLX44C2 44" DVLX44C3 44" DVLX46C1 46" DVLX46C2 46" DVLX46C3 46" DVLX44C1 DVLX44C2 DVLX44C3 DVLX46C1 DVLX46C2 DVLX46C3 Figure 1: DVLX4xCx Product View Predominately, the entire DVLX4xCx product line is composed of common parts. The few parts which apply only to specific products are associated with the front bezel to give product differentiation in appearance.
  • Page 5 5. In order to provide AKAI with the ability to address different distribution channels with a different aesthetic look and screen size designs, the main enclosure is designed such that it allows mounting of the optical engine platform in such a way to accommodate the throw distances for sizes ranging from a 42”...

  • Page 6: Block Diagram

    Rear Projection TV Service Manual Mechanical (Enclosure) Electrical Optical Lamp & Housing Formatter Light Projection Board Engine Integrated Light Ballast Lamp Fan Engine Subsystem Audio Subsystem Video Tuner Power Enclosure Speaker Board Board Supply Audio Board I/O Panel Control Board Speaker m0402-02 Remote...

  • Page 7: Product Test Environment

    Rear Projection TV Service Manual Tuner ACBL09 Board ACBL10 Audio ACBL11 ACBL17 Speakers Board ACBL18 Screen Large ACBL12 Mirror Control ACBL13 Board Enclosure Fans ACBL14 ACBL19 Interlock Board Switch ACBL19 E-Box ACBL20 ACBL01, ACBL02 Video Optical Small ACBL07, ACBL08 Board Engine Mirror ACBL21...

  • Page 8: Figure 4: Test Environment

    Rear Projection TV Service Manual Test Controller & Program Source RS-232 RS-232 Download Software Run tests Record Test Results Audio/Video Sources Composite Video RF Mod ANT A S-Video RF Mod ANT B Composite Video Video 1 S-Video S-Video 1 Composite Video Video 2 S-Video S-Video 2...

  • Page 9: Figure 5: Vga Test Pattern

    Rear Projection TV Service Manual 3. DVD player audio/video source unit connected to the following DVLX4xCx rear panel inputs: a. VIDEO 2 video input and AUDIO L/MONO and AUDIO R audio inputs. b. S-VIDEO 2 video inputs. 4. DVD player audio/video source unit connected to the following DVLX4xCx rear panel inputs: a.

  • Page 10: Service Procedure

    Rear Projection TV Service Manual After the test equipment in the test environment is connected to the DVLX4xCx and the 110 VAC power is applied to the DVLX4xCx, the test procedure proceeds as described in the following sections. Service Procedure Table 2 is a service checklist showing the most typical repair scenarios when the UUT is capable of functioning normally but with degraded operation;...
  • Page 11 Rear Projection TV Service Manual Symptom Possible Problem Remedy Action Reference Extreme color Video Board fault Replace Video Board SPN-6 domination (e.g. extremely green) Extreme low Video Board fault First replace Video Board SPN-6 brightness Optical Engine fault If problem persists, Replace SPN-23 Optical Engine No tuner input...

  • Page 12: Figure 6: Service Procedure Flowchart

    Rear Projection TV Service Manual Test Procedure Connect UUT to test environment Unplug UUT from 110 VAC Launch PC "Flash Loader" Wait 10 seconds Plug UUT into 110 VAC Normal Response: Manufacturer & Product ID on PC ID Message 6th attempt on PC ? for ID Message ? Load Diagnostics Test...

  • Page 13: Figure 7: Service Procedure Flowchart (Continued)

    Rear Projection TV Service Manual Load Operational Software into UUT Close PC "Flash Loader" Unplug UUT from 110 VAC Wait 10 seconds Plug UUT into 110 VAC Normal Response: UUT Enters Standby Mode UUT POWER Lamp On Solid Red UUT in 6th Attempt for Standby Mode? Standby Mode?

  • Page 14: Figure 8: Service Procedure Flowchart (Continued)

    Rear Projection TV Service Manual Unplug UUT from 110 VAC Interlock Replace Interlock Switch Switch OK? Interlock Replace Cable Switch Cable OK? Unplug UUT from 110 VAC Disconnect All Cables to Optical Engine Unplug Bench Power Supply from 110 VAC Connect All Optical Engine Cables from Bench Video Board &...

  • Page 15: Table 3: Service Procedure Number (Spn) Description

    Rear Projection TV Service Manual Table 3: Service Procedure Number (SPN) Description Description You will see the menu below. When the UUT is not plugged into 110 VAC, the Browse button and the Start button will be non-selectable and correspondingly shaded gray. When the UUT is plugged into 110 VAC, the Browse button will be selectable and correspondingly not shaded.
  • Page 16 Rear Projection TV Service Manual Description Each time ENTER is pressed on the PC, the Flash Loader responds with the character > as shown below. On the PC, run file Diagnostic.exe. You will see the following menu, asking for the UUT serial number.
  • Page 17 Rear Projection TV Service Manual Description A message written on the PC screen identifies whether the components passed or whether a component failure is found. Furthermore, a file is written with the SN as a file name to record this information.
  • Page 18 Rear Projection TV Service Manual Description 1. Use the remote control or front panel push button switches to turn the power off, and after waiting several minutes unplug the TV. (The cooling fans will continue to blow for several minutes after turning the power off.) 2.
  • Page 19 Rear Projection TV Service Manual Description Disconnect cables from the following connectors of the Optical Engine. JDSU Optical Engine Cable JDSU connector ACBL01 ACBL04 ACBL07 Disconnect Ballast connect from Power Supply. Zeiss Optical Engine Cable Zeiss connector ACBL02 ACBL08 ACBL06 Disconnect Ballast connect from Power Supply.
  • Page 20 Rear Projection TV Service Manual Description Connect the Optical Engine to the bench Video Board and the bench Power Supply cables as follows JDSU Optical Engine Cable JDSU connector Bench Video Board Bench Power Supply ACBL01 ACBL07 ACBL04 CON1 Connect Ballast to bench Power Supply. Zeiss Optical Engine Cable Zeiss connector...
  • Page 21 Rear Projection TV Service Manual Description JDSU Optical Engine Zeiss Optical Engine service_manual_i DVLX Confidential - 21 - 10 December 2004...

  • Page 22: E-Box Disassembly & Board Replacement Procedure

    Rear Projection TV Service Manual Table 4: Cable Routing Description Cable Description Component #1 Component #2 Component #3 ACLB01 Video Board J15 JDSU Engine J1 JDSU/ LVDS Cable ACLB02 Video Board J15 Zeiss Engine J1 ZEISS/ LVDS Cable ACLB03 JDSU Engine J3 FSP PS (CN2) FSP/JDSU Power Cable ACLB04...
  • Page 23 Rear Projection TV Service Manual Disconnect cable Remove screws holding the E-Box Cover With E-Box Cover partially open, disconnect the Cables from the electronics boards Pass the Power Supply output cable through the cable opening on the E- Box Cover Remove E-Box Cover E-box Power Supply...
  • Page 24 Rear Projection TV Service Manual CON2 (2 pins) CON1 (9 pins) 12 v 3.3 v service_manual_i DVLX Confidential - 24 - 10 December 2004...

  • Page 25: Lamp Cartridge Replacement Procedure

    Rear Projection TV Service Manual Lamp Cartridge Replacement Procedure 1. Use the remote control or front panel push button switches to turn the power off, and after waiting several minutes unplug the TV. (The cooling fans will continue to blow for several minutes after turning the power off.) 2.

  • Page 26: Control Board And Led Board Replacement Procedure

    Rear Projection TV Service Manual Lamp Cartridge Lamp Door Interlock Switch Control Board and LED Board Replacement Procedure The following picture is the back view of the Front Bezel, showing the LED Board and the Control Board. LED Board Control Board DVLX4xCx Diagnostic Software Downloading and Operation Downloading the Diagnostic Software into the DVLX4xCx unit 1.

  • Page 27: Running The Diagnostic Software

    Rear Projection TV Service Manual 2. On the PC test controller, launch the Flash Loader program FLASHLoader.exe. 3. Connect the DVLX4xCx unit to 110 VAC. 4. On the Flash Loader program make sure that in the window labeled Flash, alphanumeric text is displayed after the captions “Manufacturer”...

  • Page 28: Reset Picture Settings

    Rear Projection TV Service Manual 7. Press the “Start” button on the program to burn the files onto the board. Make sure that the procedure completes, and the “Program OK” screen shows. Press “OK” to accept the message and exit the program by pressing the “X” button on the upper right corner of the program. 8.

  • Page 29: Video Fine Tuning Adjustment

    Rear Projection TV Service Manual 4. Press either the “OK” button or the “ ” button on the remote control to display the submenu of the VGA button. 5. Go to the button named “Scaling Factor”. Press “OK” button. A slider will appear in the center of the screen.

  • Page 30: Checking And Verifying Each Input On The Dvlx4Xcx Unit

    Rear Projection TV Service Manual Figure 11: Maintenance Menu and Video Fine Tuning Submenu Checking and verifying each input on the DVLX4xCx unit 1. Go to the “Input” caption of the maintenance menu by using the cursor buttons on the remote control (see Figure 12).

  • Page 31: Running The Front Panel Keypad Test

    Rear Projection TV Service Manual Important! When the remote control test is running, the ONLY way to stop the test is to press the keypad button labeled “MENU-EXIT”. The DVLX4xCx unit will not respond to remote control buttons as in the normal operation and it will not respond to any other front panel keypad buttons.

  • Page 32: Run Maintenance Menu Bit

    Rear Projection TV Service Manual Figure 13: Operational On Screen Display (OSD) Menu Run Maintenance Menu BIT The Maintenance Menu allows you to change the default settings of the UUT. The Maintenance Menu also provides a Remote Control keypad test and a front panel keypad test, in which pressing of the keys will cause the UUT screen to display a confirmation of which key is pressed if heard.
  • Page 33 Rear Projection TV Service Manual DVD Cable TV Input S-Video 1 S-VIDEO 1 Video 1 VIDEO 1 S-Video 2 S-VIDEO 2 Video 2 VIDEO 2 Component 1 COMPONENT 1 Component 2 COMPONENT 2 Turn on the TV. Launch the TV maintenance program by pressing 20498354 on the TV Remote Control. Press TV:“INPUT”;...
  • Page 34 Rear Projection TV Service Manual This will split the picture on the screen; on the left is the image from the DVD player, and on the right is an internally created image, sliding bar while on the bottom is the “COLOR” controlled by pressing 13.
  • Page 35 HIPRO ! " #$% & $ ' ( ' ) ' ! Int.Model No.: SPEC. NO.: ISSUE : PAGE : HP-U2830XC 1 OF 7...
  • Page 36 HIPRO TABLE OF CONTENTS ....................2 TABLE OF CONTENTS ....................3 DESCRIPTION …………………………………………………………………………………..4 ELECTRICAL ……………………………………………………………………………………4 AC INPUT CHARACTERISTICS ................. 4 INPUT VOLTAGE ...................... 4 INPUT FREQUENCY ....................4 INPUT CURRENT ..................... 4 PHASE ........................4 ISOLATION ....................... 4 INRUSH CURRENT ……………………………………………………………….…...4 DC OUTPUT CHARACTERISTICS DC OUTPUT VOLTAGE ...................
  • Page 37 HIPRO 6.3..Construction Specification of the Power Supply …………………………………… 7 LIGHTING SURGE…………………………………………………………………………7 RELIABILITY………………………………………………………………………………..7 BURN IN ........................... 7 Int.Model No.: SPEC. NO.: ISSUE : PAGE : HP-U2830XC 3 OF 7...
  • Page 38 HIPRO ELECTRICAL SPECIFICATIONS : AC INPUT CHARACTERISTICS The supply shall operate over the input voltage ranges shown in the below table. AC INPUT VOLTAGE MINIMUM NORMAL MAXIMUM UNITS 100-240 VRMS NOTE:The input voltage should remain within limits +/- 1.0V AC INPUT FREQUENCY MINIMUM NORMAL MAXIMUM...
  • Page 39 HIPRO DC OUTPUT CHARACTERISITCS : DC OUTPUT VOLTAGE OUTPUT TOLERANCE MINIMUM NORMAL MAXIMUM UNITS +2.5V +/-5% 2.375 2.625 Volts +3.3V +/-5% 3.135 3.465 Volts +12V +/-5% 11.4 12.0 12.6 Volts +/-5% 4.75 5.25 Volts +380V +/-5% Volts Note The above voltage is include ripple and noise. DC OUTPUT CURRENT : OUTPUT MINIMUM...
  • Page 40 HIPRO LOAD NAME RIPPLE & NOISE MAX UNITS +2.5V mVp-p +3.3V mVp-p +12V mVp-p mVp-p Note1: Ripple is measured by using a 12 inch twisted pair terminated with a 47uF parallel with a 0.1uF ceramic capacitor at maximum load. The discharge time is defined from output to 0.1 Volt. HOLD-UP TIME : 8.33ms Typical with full load , Rated output and at 240Vrms/60HZ input ac line.
  • Page 41 HIPRO 5.4 Storage humidity: 10 90% RH(Non-condensing) 5.5 Typical 450LFM airflow (output connector to opposite side or else) 5.6 Vibration: Frequency range : 10 – 55HZ Amplitude 2g over entire frequency range sweep 1 minute for x,y,z axis each. Cycle : 20 SAFETY &...
  • Page 42 Video Board Design Table Of Content: ----------------- 01. Cover 02. Block Diagram 03. Video Input Buffers 04. 3D Comb Filter 05. Video Decoder VPC3230D 06. Teletext & Caption 07. Video_Decoder_VPC3230D_GR 08. 3D_Comb_Filter_Graphic 10. Graphics_Input_Buffers 11. AD9883A. 12. SiI169 13. MN203 14.

  • Page 43: 01. Cover

    Tuner Board Design Table Of Content: ----------------- 01. Cover 02. Tuner Digital Video Labs, Inc. Digital Video Labs, Inc. Digital Video Labs, Inc. 6185 Paseo del Norte 6185 Paseo del Norte 6185 Paseo del Norte Carlsbad Carlsbad Carlsbad CA, 92009 CA, 92009 CA, 92009 Title...
  • Page 44 SDA_2 SDA_2 SCL_2 SCL_2 U1 FQ1236-MK3 U1 FQ1236-MK3 I2C BUS SLAVE ADDRESS: 0xC6 Note: Connect tuner holding pins to GND. V_IF1 10NH 10NH SIF1 100UF 100UF 100UF 100UF 2.2K 2.2K 0.1UF 0.1UF 0.1UF 0.1UF R3 22 R3 22 0.1UF 0.1UF 10NH 10NH SDA_2...
  • Page 45 3D Comb Filter Caption uPD64083 Z86229 I2C_2 - 0x28 I2C_1 - 0xB8 2 x SDRAM 64Mb p.14 Video BT656 Decoder Video Port Output LVDS Tx Input VPC3230D Port DS90C385 p.16 I2C_3 MN203 120 Pin I2C_1 - 0x8E Output Module Digital CV Tuner1 I2C_2 - 0x88, p.18...
  • Page 46 C374 C374 R355 R355 0.1UF 0.1UF 6.8K 6.8K TP53 TP53 MMBT3904 MMBT3904 470@200 470@200 R357 82 R357 82 C372 C372 SVIDEO SVIDEO 10UF 10UF FB34 FB34 C376 C376 R359 68 R359 68 47UF 47UF 120@200 120@200 R361 R361 R362 R362 R363 R363 C378...
  • Page 47 C Output 3D_+5V Y Output 3D_+5V R315 R315 R316 R316 R317 R317 1.0K 1.0K R318 R318 R319 R319 R320 R320 C319 C319 1.0K 1.0K C321 C321 R322 75 R322 75 R323 75 R323 75 C318 C318 0.1UF 0.1UF 0.1UF 0.1UF R321 R321 MMBT3906...

  • Page 48: Video Decoder Vpc3230D

    R284 R284 R288 75 R288 75 R285 120 R285 120 C256 C256 68NF 68NF VD1_CCD_FB VD1_SY 4.7UH 4.7UH 4.7UH 4.7UH C261 C261 R289 120 R289 120 C262 C262 R291 R291 R286 R286 C257 C257 C258 C258 150PF 150PF 150PF 150PF 150PF 150PF 150PF...
  • Page 49 470@200 470@200 R265 R265 1.0K 1.0K VD1_CCD_R C242 C242 C244 C244 C243 C243 C245 C245 C246 C246 22UF 22UF 0.1UF 0.1UF 22UF 22UF 0.1UF 0.1UF 0.1UF 0.1UF R266 R266 5V-1 2.2UH 2.2UH Z8622912SSC Z8622912SSC R267 R267 CCD1_INT_N 1.0K 1.0K CCD1_INT_N VIN/INTRO C247 C247...

  • Page 50: Video_Decoder_Vpc3230D_Gr

    R446 R446 R448 75 R448 75 R447 120 R447 120 C486 C486 VD2_CCD_FB VD2_SY .22UF .22UF 4.7UH 4.7UH TP66 TP66 C489 C489 R449 120 R449 120 C490 C490 4.7UH 4.7UH R451 R451 R450 R450 C487 C487 C488 C488 150PF 150PF 150PF 150PF 150PF...

  • Page 51: D_Comb_Filter_Graphic

    C Output 3D2_+5V Y Output 3D2_+5V R511 R511 R512 R512 R513 R513 1.0K 1.0K R514 R514 R515 R515 R516 R516 C601 C601 1.0K 1.0K C603 C603 R518 75 R518 75 R519 75 R519 75 C600 C600 0.1UF 0.1UF 0.1UF 0.1UF R517 R517 MMBT3904...

  • Page 52: Graphics_Input_Buffers

    Graphics RGB TP28 TP28 R156 R156 Graphics DVI 6.8K 6.8K MMBT3904 MMBT3904 470@200 470@200 C174 C174 J16 DB15 FEM J16 DB15 FEM 0.1UF 0.1UF C175 C175 C176 C176 10UF 10UF 47UF 47UF 120@200 120@200 R157 R157 R158 68 R158 68 GSDA GREEN R159...

  • Page 53: Ad9883A

    R/Pr C423 C423 +3V_AD3A +3V_AD3P 0.1UF 0.1UF HDTV_SEL HDTV_SEL 470@200 470@200 C422 C422 RGB/YUV R/Pr 22UF 22UF Clamping: 47 OHM RP20 47 OHM RP20 Control D_INA23 B/Pb D_INA22 D_INA21 R/Pr D_INA20 C424 C424 ADG774ABRQ ADG774ABRQ R425 R425 47NF 47NF D_INA19 D_INA18 1.0K 1.0K...

  • Page 54: Sii169

    D_INA[0..23] D_INA[0..23] 7,11,13 RX2+ RX2+ RX2- RX2- RX1+ RX1+ RX1- RX1- RX0+ RX0+ RX0- RX0- RXC+ RXC+ RXC- RXC- +3Vc_169 R434 R434 4.7K 4.7K +3Vc_169 R435 R435 R436 R436 R433 R433 +3Vd_169 BSS123TA BSS123TA BSS123TA BSS123TA 4.7K 4.7K 4.7K 4.7K SiI169_RST_N SiI169_PD_N Sil169_SCL...
  • Page 55 SIDE B: CPU + PORT B + JTAG SIDE B: CPU + PORT B + JTAG SIDE A: SDRAM+PORT A SIDE A: SDRAM+PORT A U28B U28B VCLK VCLK U28A U28A 7,11,12 D_INA[0..23] VB_CLK D_INA0 V_IN[0..7] VA_DATA0 V_IN[0..7] D_INA1 V_IN0 VA_DATA1 M_BS1 VB_DATA0 MEM_BS1...
  • Page 56 MEM_DQ[63..0] MEM_DQ[63..0] +3Vsb +3Vsb MEM_DQ0 MEM_DQ15 MEM_DQ32 MEM_DQ47 MEM_A[10..0] DQ15 DQ15 MEM_A0 VDDQ VSSQ VDDQ VSSQ MEM_A1 MEM_DQ1 MEM_DQ14 MEM_DQ33 MEM_DQ46 DQ14 DQ14 MEM_A2 MEM_DQ2 MEM_DQ13 MEM_DQ34 MEM_DQ45 DQ13 DQ13 MEM_A3 VSSQ VDDQ VSSQ VDDQ MEM_A4 MEM_DQ3 MEM_DQ12 MEM_DQ35 MEM_DQ44 DQ12 DQ12 MEM_A5...

  • Page 57: 1. Lvds Tx Ds90C385

    OP_A[0..23] 13,18 OP_A[0..23] OUTPUT_10 TxOUT3+ OP_A20 TxOUT3- TxIN4 OP_A23 OP_A19 TxIN5 TxIN3 OP_A21 OP_A18 TxCLKOUT+ TxIN6 TxIN2 OP_A8 Critical Routes, TxCLKOUT- TxIN7 OP_A17 TxIN1 refer to Layout OP_A9 OP_A16 TxOUT2+ TxIN8 TxIN0 OP_A10 OP_A22 TxOUT2- Recommendation TxIN9 TxIN27 OP_A14 TxIN10 LVDS_GND TxOUT0- TxOUT1+...
  • Page 58 Output Module Connector OP_B[0..23] OP_B[0..23] OP_A[0..23] 13,16 OP_A[0..23] OP_B[0..23] OP_B0 OP_B1 OP_B2 OP_B3 OP_B4 OP_B5 OP_B6 OP_B7 OP_B8 OP_B9 OP_B10 OP_B11 OP_B12 OP_B13 OP_B14 OP_B15 OP_B16 OP_B17 OP_B18 OP_B19 OP_B20 OP_B21 OP_B22 OP_B23 Edge of card OP_A0 OP_A1 OP_A2 OP_A3 OP_A4 OP_A5 OP_A6...

  • Page 59: Cpu_Flash_Sram

    Install on component side +3Vsb Note: LED1_N (PIO20) SDA_2 +3Vsb SDA_2 3,6,7,21 LED1_N BSS123 1.0K 1.0K SCL_2 SCL_2 3,6,7,21 Pay attention 10.0K 10.0K SOT23 to layout. LED0_N (PIO29) 1.0K 1.0K DLP_ON_N DLP_ON_N Do not assemble DLP_READY DLP_READY in MP. MMBT3904 MMBT3904 (PIO11) PDP_ON...
  • Page 60 OUTPUTS INPUTS +3Vsb +3Vsb +3Vsb CPU_D[0..7] CPU_D[0..7] 13,19 0.1UF 0.1UF +3Vsb 0.1UF 0.1UF INPUT_10 CPU_D0 +3Vsb INPUT_11 CPU_D1 INPUT_12 CPU_D2 INPUT_13 CPU_D3 CPU_D4 13,19 CPU_D[0..7] VD1_RST_N 1.0K 1.0K CPU_D5 VD2_RST_N CPU_D0 VD1_RST_N 1.0K 1.0K CPU_D6 VD2_OE_N 1.00K 1.00K CPU_D1 VD2_RST_N CPU_D7 CPU_D2 VD2_OE_N...

  • Page 61: Power

    Power to Audio Board Stand-By Power Supply MOSFET +12V 0.1UF 0.1UF Power 2.2UF 2.2UF Input D1 MBRD340T4 D1 MBRD340T4 Main power input +12V 0.1UF 0.1UF IRF7316 IRF7316 +12V 3,6,7,19 SCL_2 PS_ON MMBT3904 MMBT3904 3,6,7,19 SDA_2 220UF 220UF 1.69K 1.69K ON/OFF +3Vsb 33UH@2A 33UH@2A...
  • Page 62 Tuner Board Design Table Of Content: ----------------- 01. Cover 02. Tuner Digital Video Labs, Inc. Digital Video Labs, Inc. Digital Video Labs, Inc. 6185 Paseo del Norte 6185 Paseo del Norte 6185 Paseo del Norte Carlsbad Carlsbad Carlsbad CA, 92009 CA, 92009 CA, 92009 Title...
  • Page 63 SDA_2 SDA_2 SCL_2 SCL_2 U1 FQ1236-MK3 U1 FQ1236-MK3 I2C BUS SLAVE ADDRESS: 0xC6 Note: Connect tuner holding pins to GND. V_IF1 10NH 10NH SIF1 100UF 100UF 100UF 100UF 2.2K 2.2K 0.1UF 0.1UF 0.1UF 0.1UF R3 22 R3 22 0.1UF 0.1UF 10NH 10NH SDA_2...

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