Testing Data Relay Boards And Ic's; Data Relay Board (Lu); Data Relay Board (Ru) - Pioneer PRO-1410HD Field Service And Training Manual

Testing Data Relay Boards and IC's

Cause/Countermeasure:
② If the connector CN7709 disconnected from Data Relay Board (RU) is short-circuited between Pin 1 (or 2) and
GND (Pin 3 or 4) ⇒Data IC is broken ⇒
③ If the connector CN7709 disconnected from Data Relay Board (RU) is short-circuited between Pin 5 (or 6) and
GND (Pin 3 or 4) ⇒ Data Relay Board (LU) or (RU) is failed ⇒
a) If the connector CN7608 disconnected from Data Relay Board (LU) is short-circuited between Pin 1
and GND (Pin 2 or 6) ⇒ Data Relay Board (LU) is failed ⇒
b) If the connector CN7708 disconnected from Data Relay Board (RU) is short-circuited between Pin 1
and GND (Pin 2 or 6) ⇒ Data Relay Board (RU) is failed ⇒

Data Relay Board (LU)

CN7608 CN7708 CN7709
PDP.

Data Relay Board (RU)

52
Exchange Data Relay Board (LU).
Exchange Data Relay Board (RU).
Data Relay Board (RU)
CN7709
OK: Open
NG: Short
NEC Plasma Display