Data East / Sega PPB-1 - Coil Voltage and Relay - Test and Indicator boards

Data East & Sega - PPB-1  Coil Voltage and Relay tester Boards - V1.0

These boards provide indicators for the coil voltages, in and out of the relay.  

Easy to Use.  Simply remove the plugs from J6 and J7, and connect these boards onto the J6/J7 headers on the PPB-1.  Then plug the connectors to the appropriate board. Tie the wire to Ground. 

Each board has LED indicators with a short description in the silk screen to what it does.

J6 - SW1:  Changes the state of the relay.  If the 28V is present, and the relay is working correctly, the relay will click when pressed

J6 - L1:  Normally Open 28V.  This LED is normally off when in attract mode.  Push SW1 and the LED will light.

J6 - L2:  Normally closed 28V.  This LED is normally on in attract mode.  Push SW1 and the LED will go off.

J6- L3:  28V present.  If off during attract, check Power Supply board, CN3, pin 5.

J7 LED1:  50V present.  If off, check F5.  If F5 is blown (like really blown, and not just crumbling from old age), test BR1

J7 LED2:  50V fused.  If LED1 is on, and the board contains and F9 (not all do) but LED2 is off, F9 is likely bad

J7 LED3:  Normally Open 50V.  Normally off during attract.  Press SW1 on the J6 board to test.

J7 LED4:  Normally Closed 50V.  If LED1 is lit, but LED4 is off, check F8 (if present).  Press J6 SW1 and LED4 will turn off.

Video being installed and used here

BE10