1

1) Focus Error Signal > (A+C)-(B+D) This signal is generated in RF IC (IC121 AN22113A) and controls the pick-up's up and down to focus on Disc. 2) Tracking Error Signal (DPP Method) > (A+D)-(B+C) - k x (EF1+EF4mEF2+EF3) This signal is generated in RF IC (IC121 AN22113A) and controls the pick-up's left and right shift to find to track on Disc. This signal is converted to DATA signal in DSP IC (IC201 MN103SA6G).

3

Select ALPC OPC on the menu bar, and then select Setup Laser Power(Manual) menu. 3. First, select CD and setup wave length of LD Power meter (780nm) (Wave Length CD(780nm), DVD(660nm), Measure Range 0.01mW unit). 4. Click VRDC button on the Laser Power Setup window. Laser beam will be emitted from LD. 5. Measure LD Power with LD Power meter. Type the result in the blank(Read Power box). ex) 1.44mW -> 144, 0.99mW -> 99) 6. Click NMP button and measure LD Power with Power meter. Type the...

C P

Recording Capacity of CD-R RW (74Minute Recording media) (2048 Byte Sector) X (75 Sector Second) X (60 Second Minute) X 74 Minute 681,984,000 Bytes 682 Mbytes But the actual recording capacity is about 650 Mbytes. (according to the ISO 9660 standard, approximately 30 Mbytes are used to make directory structure and volume names.) The differences of DVD-R RW, DVD+R RW discs and DVD-ROM

D

Copy Protection and Regional Code Management Block Block Diagram - DVD-ROM drive transfers the regional code of the control data to host by the command of host, the DVD player of host reads the regional code, and plays title in the case of allowed regional code only. 2. Management of DVD Disc for the scrambled of data (1) DVD-ROM and DVD player of host generate the KEY 1 respectively, transfer to opposite part, the KEY 2 is received, recognizes the data transfer or not with this value, and...

I

Front light system reference level input pin I Input pin O Output pin I O I O pin PS Power supply Ground pin N.C Non Connection IC201 (MN103SA6G) Encoder, Decoder & DSP Singal Processor Pin Assigment BSMD NBSMD PKMD NPKMD PK2MD MPK2MD PK3MD NPK3MD AVDD33D2 LOUT ROUT AVSSD2 RV1 VREFH AVDD33D1 CPOP5 CPOP4 CPOP3 CPOP2 CPOP1 AVSSD1 SE01 SE02 AVSSA AIDENV WBLDIF AVDD33A REFMDLA REFTOP REFBTM REGDRC EQOUTN EQOUTP AVDD33DRC CDA1 AVSSDRC P02 FMSW PO3 WTGT WBL FEPIDGT SH5 WIDGT SH3 SH2 SH1 TC

Description Of Circuit

Laserdiod Gwa 4164b

ALPC Automatic Laser Power Control Circuit 1-1. Block Diagram 1-2. ALPC Automatic Laser Power Control Circuit Operation The ALPC block detects the laser output power of the front monitor. The power signal detected with the PD for front monitor detection is input the voltage from the VPD pin 123Pin or the FPDM pin 127Pin , the reference signal of the input signal is input from the VREFPD pin 124Pin . The ALPC block generates the singals from the input laser power signals in the following...

N

Gwa 4166b Jumper

Connects to the power supply 5-and 12-V DC of the host computer. NOTE Be careful to connect with the proper polarity. Connecting the wrong way may damage the system and is not guaranteed . Usually this connector can only be attached one-way. Connect to the IDE Integrated Device Electronics Interface using a 40-pin flat IDE cable. NOTE Do not connect or disconnect the cable when the power is on, as this could cause a short circuit and damage the system. Always turn the power OFF when connecting...