3.3 Function
3.3.1 Logic board Function
1) Data Processor
- Y adjustment
- NTSC/EBU format (Color Matrix) Switch
- RGB gain Control (White balance adjustment, Amplitude limitation)
- Error Diffusion Technology (Grayscale adjustment)
- Dither (Grayscale adjustment)
- Burn-in Pattern generation
- Streaking adjustment
2) Data Converter
3) Scan Controller
- Address driver control signal generator (ADM)
- scan driver control signal generator (SDM)
- X / Y sustain control signal generator
4) Waveform ROM
5) MPU
- Synchronous detection
- System control
- Driving voltage(Va, Vs, Vw) minor adjustment
- Abnormal watch (breakdown detection)/abnormal processing
- Is(sustain) current control (sustain pulse control)
- Ia(address) current control (sub-field control / sustain pulse control)
- External communication control
- Flash memory (firmware)
6) EEPROM
- Control parameter memory
- The accumulation energizing time (Every hour).
- Abnormal status memory (16 careers)
Function of X-SUS Board
1) DC/DC power supply block
- Va (+63V) -> Vx(-30V) / Vq (-55V)
- Vcc (+5V) -> Ve (+17V) / XFve (+18V, floating)
2) X switching block
- Switch circuit for address period
- Switch circuit for reset period
3) Current detector block
- Isx (sustain) current detection
- Ia (address) current detection
4) Voltage detector block
- Vs (sustain) voltage detection
- Va (address) voltage detection
FUNCTION OF Y-SUS BOARD
1) DC/DC power supply block
- Vcc (+5V) -> Ve (+17V) / YFve (+18V, floating)
- Vs (+85V) -> Vw (200V)
2) Y switching block
- Switching for address period
- Switching for reset period
35
- Quasi out-line adjustment (luminous pattern control)
- Waveform Pattern for drive / Timing memory
- Switching for sustain period
- Switch circuit for sustain period
TROUBLESHOOTING THE 50AF1 PANEL
Содержание P50S601/DW3F
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