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Akai ADP-841 Service Manual

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PORTABLE DVD
Models:
ADP-841
ADP-841M
www.akai.ru

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Summary of Contents for Akai ADP-841

  • Page 1 PORTABLE DVD Models: ADP-841 ADP-841M www.akai.ru...
  • Page 2 Service Manual 1. The System Block Diagram & the Block’s Function Description 2. Schematic Circuit Diagram 3. Interconnection Diagram 4. Critical Commpoents List 5. IC Date Sheet & IC Description 6.Service Tools and Equipment...

  • Page 3: Schematic Circuit Diagram

    1. The System Block Diagram & the Block’s Function Description DVD System Block INVERTER DISPLAY 8.4” TFT---LCD DC to DC MP1410 TFT---LCD driver IR3Y29BM +PVI-1004C /D Mech DM-12 (pick up DD30) 2. Servo +MPEG MT1389DE-B 2. Schematic Circuit Diagram...
  • Page 4 CON11 9VIN RB053L-30 L102 6.8uH 9VIN DCH-3A-2 L101 22uH C102 C101 100uF/10V C103 B230A 0.1uF C205 C206 C207 0.01uF 0.1uF 47uF/25V Sync 9VIN POWERJACK C104 HGND Comp R102 10KF L606 PIO54-220 0.01uF MP1410ES C105 C106 C107 180pF 0.1uF 10uF LCTR_5V R103 R104 30K9F...
  • Page 5 CTR_TFT5V +3.3V R223 4.7K CTR_TFT R225 4.7K 3904 R228 4.7K LF52ABPT CTR_TFT5V 9VIN L204 +5V_TR +5V_TFT 9VIN CR54/47uH C262 +3.3V C259 R202 +3.3V 0.1uF 4K7-->22K C240 C255 0.1uF C244 100uF/10V R203 100uF/10V 0.1uF CBWU600OPEN C208 R204 CBWU600 0.1uF R205 U22A 4K7-->8K2 LM393D CBWU600...
  • Page 6 R318 100K R319 AVCC +3.3V LDO_AV33 F304 [ 1 ] AVCC R321 F305 +3.3V [ 1 ] 3904 +3.3V V1P4 MO_VCC VREFN JITFO R301 100K [ 1,2,3,4,5,6 ] R322 100K F307 FB C386 C368 C369 47uF/10V C385 47uF/6.3V 0.1uF 0.1uF R303 C317 A[0..21]...
  • Page 7 +3.3V R401 AA20 R402 R403 R404 +3.3V R405 AA21 680R 680R R406 C401 0.1uF EEPROM 24C02(04) MA10 DQ10 A10/AP DQ10 MA11 DQ11 DQ11 DBA0 DQ12 BA0/A13 DQ12 DBA1 DQ13 BA1/A12 DQ13 DQ14 DQ14 SDCLK DQ15 DQ15 SDCKE DCS# SD33 DRAS# SD33 DCAS# SD33...
  • Page 8 RN51 33R*4 ASDAT0 SDAT0 ABCK SBCLK ALRCK SLRCK ACLK SACLK SDAT0 DAC_ML SDATA AOUTL SBCLK VCCDAC DEM/SCLK SLRCK LRCK AGND SACLK DAC_MR MCLK AOUTR CS4334 +3.3V R503 C503 R501 R502 C501 100pF U62A 1N4148 C542 2.4K 6.8K F501=R701 10uF/10V MC33202D C508 R540 220uF/6.3V...
  • Page 9 L601 1.8uH SVIDEO_Y L607 1.8uH ASPDIF C617 22pF ASPDIF C602 22pF R608 9VIN R601 9VIN +5V_TFT +5V_TFT +7.5V_TFT C616 C618 +7.5V_TFT +17V_TFT C601 C603 270pF 330pF +17V_TFT 270pF 330pF -10V_TFT -10V_TFT HGND HGND INT/EXT L602 1.8uH SC_TFT INT/EXT B/Cb/Pb L608 1.8uH B/Cb C620...
  • Page 10 改...
  • Page 11 改 上 接 触 ） 改...
  • Page 12 ４．Ｃｒｉｔｉｃａｌ　Ｃｏｍｐｏｎｅｎｔｓ　Ｌｉｓｔ Singing Appellation MPS1410 MX29LV800 TPA6011 MT1389DE-B FN5331 AT5654 MC33202 IR3Y29BM PVI-1004B/C ５．　ＩＣ　Ｄａｔｅ　Ｓｈｅｅｔ　＆　ＩＣ　Ｄｅｓｃｒｉｐｔｉｏｎ...

  • Page 13: Switch-Mode Regulator

    MP1410 2A Step-Down Switch-Mode Regulator Monolithic Power Systems BS 1 SYNC COMP Pin Functions BS (Pin 1) Bootstrap COMP (Pin 6) Compensation This capacitor is needed to drive the power This node is the output of the transconductance switch’s gate above the supply voltage. It is error amplifier and the input to the current connected between V and Bootstrap pins to...

  • Page 14: Pin Assignment

    MT1389B/C Version 1. Pin Assignment Specifications are subject to change without notice Abbr. : SR : Slew Rate PU : Pull Up PD : Pull Down SMT : Schmitt Trigger 2MA~16MA : Output buffer driving strength. Main Alt. Type Description RF Interface ( 28 ) RFGND18 Ground...
  • Page 15 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description ALPC ( 4 ) MDI1 Analog Input Laser power monitor input MDI2 Analog Input Laser power monitor input LDO2 Analog Output Laser driver output LDO1 Analog Output Laser driver output...
  • Page 16 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description IDACEXLP Analog output Data PLL DAC Low-pass filter PLLVDD3 Power Power pin for data PLL and related analog circuitry. LPFON Analog Output The negative output of loop filter amplifier LPFIP Analog Input...
  • Page 17 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description Micro Controller and Flash Interface ( 48 ) Inout HIGHA0 2~16MA, SR Microcontroller address 8 Inout HIGHA1 2~16MA, SR Microcontroller address 9 Inout HIGHA2 2~16MA, SR...
  • Page 18 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description Inout IOA1 2~16MA, SR Microcontroller address 1 / IO Inout IOA2 2~16MA, SR Microcontroller address 2 / IO Inout IOA3 2~16MA, SR Microcontroller address 3 / IO Inout IOA4...
  • Page 19 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description Inout IOCS# 2~16MA, SR Flash chip select, active low / IO PU, SMT Inout UWR# 2~16MA, SR Microcontroller write strobe, active low PU, SMT Inout URD#...
  • Page 20 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description Audio DAC master clock of SPDIF input While SPDIF input is not used: SPMCLK SCLK0 Inout Serial interface port 0 clock pin GPIO Audio data of SPDIF input While SPDIF input is not used:...
  • Page 21 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description Audio serial data 3 (Center-back/ Center-left-back/Center-right-back, in 6.1 or 7.1 mode) DSD data right surround channel Inout Trap value in power-on reset : ASDATA3 1 : manufactory test mode PD SMT...
  • Page 22 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description Output Video data output bit 6 YUV6 R/Cr/Pr 4MA, SR Red or CR Vertical sync input/output Inout While no External TV-encoder: VSYN V_ADIN1 4MA, SR Vertical sync for video-input...
  • Page 23 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description Inout RD25 GPIO Non-pull Inout RD26 GPIO Non-pull Inout RD29 GPIO Non-pull Inout RD30 GPIO Pull-Up Inout RD31 GPIO Pull-Up Inout DRAM address 4 Inout DRAM address 5 Inout...
  • Page 24 MTK Confidential A MT1389B/C PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE Main Alt. Type Description Inout RD15 DRAM data 15 Inout DRAM data 0 Inout DRAM data 1 Inout DRAM data 2 Inout DRAM data 3 Inout DRAM data 4 Inout DRAM data 5...
  • Page 25 IR3Y29BM Pin Description...
  • Page 32 & > > $ 7) .2 $/ 3 )) .9D0 ;/ .9D0 ;/ .2 $/ .2 $/ .2 $/ 3 )) <9 " )) <9 F " )) ! " $%&'D "...
  • Page 33 " =+(1 > G H3H ' + G H"H ' , G H3H ' G H"H ' G H3H ' G H"H ' "" = G H3H ' "" = G H"H ' = G H3H ' = G H"H ' ( : 8 ( : A / # = GH3H ' #...
  • Page 34 =+(1 > $" " " " " . = GH"H " " " " G H3H ' .+ - / G H"H ' .+ - / < GH3H ' GH"H ' < . = G H3H G H3H ' G H"H ' !9!2 G H3H ' >...
  • Page 35 =+(1 > $ 7) G H3H ' $ 7) G H"H ' !9!2 GH3H ' : 9 D A 2 ? 8 9 G H3H ' G H"H ' G H3H ' G H"H ' 3 )) 2 2 / ""...
  • Page 36 =+(1 > <9 F <9 / <9 F G H3H ' > 9/ <9 F G H"H ' > G H3H ' G H"H ' G H3H ' G H"H ' G H3H ' G H"H ' + - 7 $" G H3H ' G H"H ' D >...

  • Page 37: Storing And Handling Test Discs

    6.Service Tools and Equipment 6.1Service Tools and Equipment Table Application Name General DVD Testing Disc General Tools screwdriver etc. Confirm CD Testing Disc VCD Testing Disc Adjust Oscillograph Probes AV Cables TV Monitor Grounding electrostatic Searing-iron breakdown Antistatic wrist strap Conductive material steel sheet 6.2 Storing and Handling Test Discs It is important for a DVD testing disc keeping its surface precise.
  • Page 38 3. Do not place the disc on a glass surface. It may damage the disc. If this happened, please use a new testing disc adjust DVD player precision. 6.3 Notes PLEASE READ ALL NOTES GIVEN IN THIS MANUAL. ■ Locate ●...
  • Page 39 personal injury or death. This unit should be situated away from heat source, such as amplifiers, radiators, stoves or any other units producing heat. Condensation Lens could be moistening in these cases. Turn on heater shortly, In a very wet room, Move the player from a cold environment to a heat environment quickly.

This manual is also suitable for:

Adp-841m