Philips DVD963SA manual Control and Display Panel

Page 71

Circuit Descriptions and List of Abbreviations

DVD963SA

 

9.

 

EN 85

does not support this, an external circuit (two bi-directional switches, named switch "1" and switch "2") is added. The Y- and CVBS-components also share the same pins.

 

 

 

 

STV6410

 

 

 

 

 

SCART to TV

 

 

 

 

 

 

 

 

 

AUX-SCART

SCART2

 

 

 

 

 

 

 

 

 

SCART1

Y/CVBS-out

 

 

 

 

 

 

 

 

 

Y/CVBS-out

Y/CVBS-in

 

 

 

 

 

 

 

 

 

Y/CVBS-in

L_out

 

 

 

 

 

 

 

 

 

L_out

L_in

 

 

 

 

 

 

 

 

 

L_in

R_out

 

 

 

 

 

 

 

 

 

R_out

R_in

 

 

 

 

 

 

 

 

 

R_in

R/C

 

 

 

 

 

 

 

 

 

R/C

 

 

 

 

 

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

B/C

1

 

 

 

 

 

 

 

2

B/C

 

 

 

 

 

 

 

 

 

 

SB

 

 

 

 

 

 

 

 

 

SB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aux Fast

Fast

Blanking

 

 

 

 

4/3;16/9

 

 

 

Blanking

Blanking

 

 

 

 

select

 

 

 

 

 

Switch

 

 

 

 

 

 

 

 

 

 

0 or 5V

 

 

 

 

 

 

 

 

 

A/V Board

1300

 

 

 

 

 

 

 

 

 

 

C

Y

CVBS

R

G

B

L

R

I2C

CL 26532105_030.eps

 

 

 

 

 

 

 

 

 

 

300802

Figure 9-13 SCART switching circuitry

Switch "1" is controlled by the FB (Fast Blanking) pin (pin

16)of SCART2 (TV SCART):

If the FB line is low, C is input on the B/C of SCART2.

If the FB line is high, B is output on the B/C of SCART2.

Switch "2" is controlled by the FB (Fast Blanking) pin (pin

16) of SCART1 (AUX SCART):

If the FB line is low, C is output on the B/C of SCART1.

If the FB line is high, B is intput on the B/C of SCART1.

We can distinguish four situations:

1.DVD player is ON, DVD is active (DVD mode):

NO LOOP-TROUGH.

2.DVD player is ON, DVD is not active (TV mode):

LOOP-TROUGH.

3.DVD player is ON, external source becomes active:

LOOP-TROUGH.

4.DVD player is in STBY:

LOOP-TROUGH.

9.7Control and Display Panel

9.7.1Control

Slave processor

The key component on this board is the (slave) microprocessor (item 7401). It runs on an 8 MHz system clock generated with a ceramic resonator (item 1119) and has a reset circuit (item 7105) that is triggered by the +5Vstb voltage.

The start-up sequence is as follows:

1.The required IC voltage is the +5Vstb, which is present during Standby Mode.

2.When the RESET circuit (item 7105) is triggered by the +5Vstb, the slave uP initialises.

3.This will set the STDBY_CONTROL signal to LOW, which will switch on the 12V and subsequently the +3V3.

4.Once these voltages are provided, the host uP (on the mono board) will reset (via reset circuit around item 7412 on the mono board, diagram M4).

5.Now, the host uP will initialise, and indicate the slave uP to activate the Standby Mode (STBY_CONTROL) signal.

6.The player wakes up from the Standby Mode when any button is pressed on the front panel, or when the 'Power' button is pressed on the Remote Control.

Also, when going to Standby, the slave processor will reset the host processor. When the slave processor receives the correct IR (or key) code to leave the Standby mode, it resets the host processor.

Note: The slave uP will not reset successfully, if the 8MHz clock oscillator has not stabilised (check on pin 8 of IC7101).

Other slave processor functions are:

Generation of a scanning grid for the keys,

Generation of the display grid and segment scanning,

Generation of square signal to generate the filament voltage for FTD display,

Inputs for RC5/6 and P50 (P50 controller is build in).

Standby LED

Transistor 7104 drives the Standby LED. When the STBLED signal from the slave processor is ‘high’ (pin 14), the LED is ‘off’.

Key Matrix

When a key on the local keyboard is pressed, the signal at the scanning pins of the microprocessor (pins 34, 35, 36 and 37) go from +5 V to 0 V.

IR Receiver

The IR controller in the slave processor handles both RC5 and RC6 signals (input on pin 22). The logic is +5 V for ‘high’ and 0 V for ‘low’.

Status LEDs

The four status LEDs (SOUND, AUDIO DIRECT, UP- SAMPLING, and P-SCAN) are controlled by the slave processor.

P50 Interface

P50 (or Easylink) is a bi-directional serial interface for communication between video equipment. For European sets, this communication goes via pin 10 of the SCART connector, while for other regions (when present), this is a cinch connector. The slave processor controls the P50 bus (via pins 11 and 20).

9.7.2Display

Because these DVD players have an AC display (FTD) and a DC supply, an AC voltage is created by the microprocessor The slave processor has an internal square signal generator (42 kHz, duty cycle 45/55), to generate the AC filament voltage. This square voltage is amplified (by TS7106 and 7109) and decoupled (C2138 and C2143) before it is applied to the display. The necessary voltage of -32 V comes directly from the PSU.

Image 71
Contents DVD963SA /001 /171 /691 ContentsDVD-Video Player Technical Specifications and Connection Facilities SpecificationsDolby Safety Instructions, Warnings and NotesSafety Instructions Laser Device UnitInstructions Service HintsMechanical Exploded View Exploded ViewComPair Service HintsSwitched Mode Power Supply Service PositionsPurpose of Dealer Script Diagnostic Software, Trouble Shooting and Test InstructionsNucleus Contents of Dealer Script DealerscriptStructure of Player Script Contents of Player ScriptPlayer Script Purpose of Player Script SurveyLED Test Remote Control TestDisplay PCB Display Test5 P50 Loop-Back Test 162037.epsOne second Picture Test Sound 2 Test Diagnostic Software, Trouble Shooting and Test InstructionsMono PCB Digital Part Test can be left by pressing the Play key for more thanBasic Engine Loop Test See Table Below Error Log See Table onError Bits SSM Error Codes Uart Error CodesBe Errors Slph Error CodesReprogramming of New Mono Boards SMA Error CodesActivation Menu and Command Mode InterfaceCommand Overview of Nuclei Set-up Physical Interface Components Hardware requiredRef. # Reference Name Remark Processor and peripherals Ref. # Reference Name RemarkComponents Ref. # Reference Name Remark Audio Ref. # Reference Name RemarkMenus Layout of Menu and SubmenuSecond Level Submenus First Level SubmenusThird Level Submenus Nuclei Error CodesAudio Nuclei Error Error text Code Error Code Error text Error Error text CodeBasic Engine Nuclei Error Code Error text Processor & Peripherals Nuclei Error Code Error text Display PWB Nuclei Error Code Error textVideo Nuclei Error Error text Code Log Nuclei Error Code Error textMiscellaneous Nuclei Error Code Error text Audio Mute Check Test Instruction Front Display and Audio/ Video BoardSupply Check Clock CheckCommand Ref.# Name Remarks Killlr signal Ref.# Command Name Remarks Audio outputRef.# Command Name Remarks Command Ref.# Name Remarks Audio outputPersonal Notes Block Diagram DVD963SA Block and Wiring DiagramWiring Diagram DVD963SA Scart SwitchTestpoint Overview A/V Board Testpoint Overview Display Panel Testpoint OverviewP-Scan Board Power Supply Unit DVD963SA Electrical DiagramsAV-Board Clock & Control SYS CLK & ControlAV-Board Upsampling UpsamplingAudio DAC AV-Board Current to Voltage Converter Current to Voltage ConverterAV-Board Audio AV AudioAV-Board Video and Scart AV Video and ScartLayout AV-Board Top Side Layout AV-Board Overview Bottom Side Layout AV-Board Part 1 Bottom Side Layout AV-Board Part 2 Bottom Side Display Panel Display PanelLayout Display Panel Top Side Layout Display Panel Overview Bottom Side Layout Display Panel Part 1 Bottom Side PartLayout Display Panel Part 2 Bottom Side PartScan Board Line Doubler ScanLineDoublerScanE ncoder 1003-B C9 Scan Board Video OutputPart Layout P-Scan Board Overview Top SideLayout P-Scan Board Part 1 Top Side Layout P-Scan Board Part 2 Top Side Layout P-Scan Board Overview Bottom Side Layout P-Scan Board Part 1 Bottom Side Layout P-Scan Board Part 2 Bottom Side Layout Standby Board Bottom Side Standby BoardLayout Standby Board Top Side Double Scart Panel Switching Only for EU models SwitchingScart Part CL1653200795a.eps CL1653200795b.eps Layout Double Scart panel Only for EU models Part 1 Top Side Layout Double Scart panel Only for EU models Part 2 Top Side Introduction Power Supply UnitAlignments Circuit Descriptions and List of AbbreviationsOver-voltage Protection Loader/Mono Board for diagrams seePrimary Current Sensing Under-voltage ProtectionBack-end the Digital Part Loader InterfaceServo Processor/Decoder Interface/Program MemoryAudio data input/output Interface Sacd DSD processorBasic Engine Interface Video Output Audio OutputMiscellaneous Power Supply diagram M7Clock Factory Audio/Video A/V Board Reset CircuitVCR/STB/etc Progressive Scan BoardDouble Scart DVD PlayerControl and Display Panel ASD Abbreviation listIC Data Diagram Power Supply TY72011P2 item16 AK4103VF IC7203 Diagram A2 AK4103VF IC720317 CS4362 IC7300 Diagram A3 CS4362 IC730018 FLI2301 item Diagram P1 FLI2301 itemMechanical /171 Spare Parts ListMechanical /001 SD4.00SA ModuleRC22H IC SM 74LVC04ADB Phse Front PWBScan PWB Spare Parts ListScart PWB Manual 3122 785 ErrataRevision List
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