PIONEER PDP-42A3HD - PDP-4214HD - FAULTS & SYMPTOMS
TYPICAL SYMPTOM ARE ONLY SHOWN. ANOTHER SYMPTOM MIGHT APPEAR.
Symptom: Vertical line Block
Cause: Countermeasure:
- Open or contact failure of Data flexible Cable àClean, Reconnect or exchange connector.
- Failure in Data IC à Exchange PDP
- Failure in Data Relay Board à Exchange the Data Relay Board.
- Failure in multiple Data IC à Exchange PDP.
Symptom: Horizontal lines
Cause: Countermeasure:
- Failure in Scan IC on Scan Relay Board - Exchange Scan Relay Board.Open or contact failure of Scan Flexible Cable (CN01-CN04) at output side of Scan Relay Board (U,D). à Clean, Reconnect or exchange connector.
- Contact failure of connector between Scan Board and Scan Relay Board. à Clean, Reconnect or exchange connector.
- Short between terminals of Scan IC due to screw dust à Clean around the terminals.
Symptom: No Picture (Priming flash).
Cause: Countermeasure:
1F302 open. à Exchange High Voltage Board.
- If the connector CN7709 disconnected from Data Relay Board (RU ) is short-circuited between Pin 1 (or 2) and GND (Pin 3 or 4) à Data IC is broken à Exchange PDP.
- If the connector CN7709 disconnected from Data Relay Board (RU) is short-circuited between Pin 5 (or 6) and GND (Pin 3 or 4) à Data Relay Board (LU) or (RU) is failed ]
- If the connector CN7608 disconnected from Data Relay Board (LU) is short-circuited between Pin 1 and GND (Pin 2 or 6) à Data Relay Board (LU) is failed à Exchange Data Relay Board (LU).
- If the connector CN7708 disconnected from Data Relay Board (RU) is short-circuited between Pin 1 and GND (Pin 2 or 6) à Data Relay Board (RU) is failed à Exchange Data Relay Board (RU).
- If the connector CN7909 disconnected from Data Relay Board (RD) is short-circuited between Pin 1 (or 2) and GND (Pin 3 or 4) à Data IC is broken à Exchange PDP.
- If the connector CN7909 disconnected from Data Relay Board (RD) is short-circuited between Pin 5 (or 6) and GND (Pin 3 or 4) à Data Relay Board (LD) or (RD) is failed]
- If the connector CN7808 disconnected from Data Relay Board (LD) is short-circuited between Pin 8 and GND (Pin 3 or 7) à Data Relay Board (LD) is failed à Exchange Data Relay Board (LD).
- If the connector CN7908 disconnected from Data Relay Board (RD) is short-circuited between Pin 8 and GND (Pin 3 or 7) à Data Relay Board (RD) is failed à Exchange Data Relay Board (RD).
Symptom: No Picture. (Priming doesn’t flash if W-X terminals
are short-circuited.)
Cause/Countermeasure: No Diode characteristic à
Exchange High Voltage Board.
Symptom: Abnormalities in a picture.
ONE OR MORE VERTICAL BANDS, MULTIPLE VERTICAL BANDS
OUT OF SYNCHRONIZATION OR DUPLICATION
RECTANGULAR COLOR SHEAR, COLOR DISCREPANCY, SHEAR IN DISPLAY
TRANSPARENT VERTICAL BAND
MOSAIC
A NUMBER OF LATERAL LINES, REGULAR NOISE
Cause: Countermeasure :
- Contact failure of connector adjacent to Digital Board or short circuit due to conductive obstacle. à Clean or Reconnect.
- Failure in circuit on Digital Board. à Failure in Digital Board.
PIONEER PDP-42A3HD - PDP-4214HD - FAULTS & SYMPTOMS
POWER OFF
Symptom: No Picture (Priming doesn't flash) > Power off.
Cause | Countermeasure:
- F301 open à Exchange High Voltage Board.
- FU801 open à Exchange Digital Board.
- If short-circuited, disconnect connector between High Voltage Board and Scan Relay Board and,
- Short between NEGA-POSI on High Voltage Board à Exchange High Voltage Board.
- Short between NEGA-POSI on Scan Relay Board (U) à Exchange Scan Relay Board (U).
- Short between NEGA-POSI on Scan Relay Board (D) à Exchange Scan Relay Board (D).
- Symptom: No Picture à Power off (Priming flash).
- Cause | Countermeasure: R91 open à Exchange High Voltage Board.
Symptom: Failure in Writing à Power off.
DARK AND ROUGH PICTURE
MANY LIGHT SPOTS ON DARK PORTION
WHITE PATTERN EVEN IN NO SIGNAL -- POWER OFF
Cause | Countermeasure:
- R43,R61 open à Exchange High Voltage Board.
- R150 open à Exchange High Voltage Board.
