Thursday, March 28, 2013

PIONEER PDP-42A3HD - PDP-4214HD - FAULTS & SYMPTOMS [1 of 2]


                                              
                                             [1 of 2]

TYPICAL SYMPTOM ARE ONLY SHOWN.  ANOTHER SYMPTOM MIGHT APPEAR.
Symptom: Vertical line Block

Cause: Countermeasure:
  1. Open or contact failure of Data flexible Cable àClean, Reconnect or exchange connector.
  2. Failure in Data IC à Exchange PDP
  3. Failure in Data Relay Board à Exchange the Data Relay Board.
  4. Failure in multiple Data IC à Exchange PDP.
Symptom: Horizontal lines
Cause: Countermeasure:
  1. 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.
  2. Contact failure of connector between Scan Board and Scan Relay Board. à Clean, Reconnect or exchange connector.
  3. 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.
                                                                                                       Contd: