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Dragon's Lair 2 wiring connections:


J14: (SPEAKER)  pin 1 - LEFT SPEAKER
                pin 2 - LEFT SPEAKER RETURN
                pin 3 - N/C
                pin 4 - N/C
                pin 5 - RIGHT SPEAKER
                pin 6 - RIGHT SPEAKER RETURN
                pin 7 - N/C
                pin 8 - N/C

J15: (COIN)     pin 1 - +5V
                pin 2 - COIN #1
                pin 3 - COIN #2
                pin 4 - N/C
                pin 5 - N/C
                pin 6 - GND

J17: (INPUTS)   pin 1 - +5V
                pin 2 - JOYSTICK UP
                pin 3 - JOYSTICK DOWN
                pin 4 - JOYSTICK LEFT
                pin 5 - JOYSTICK RIGHT
                pin 6 - PLAYER #1 (BUTTON)
                pin 7 - PLAYER #2 (BUTTON)
                pin 8 - SWORD (BOTH BUTTONS)
                pin 9 - SERVICE BUTTON
                pin10 - GND

J1: (POWER)     pin 1 - N/C
                pin 2 - +5V
                pin 3 - +12V
                pin 4 - N/C
                pin 5 - GND
                pin 6 - GND
                pin 7 - GND
                pin 8 - GND
                pin 9 - -5V
                pin10 - +5V
                pin11 - +5V
                pin12 - +5V
 
J2: (POWER)     pin 1 - +12V
                pin 2 - +12V
                pin 3 - GND
                pin 4 - GND

P3: (RS232C)    pin 1 - GND
                pin 2 - TxD (TRANSMIT DATA) 
                pin 3 - RxD (RECEIVE DATA)
                pin 4 - RTS (REQUEST TO SEND)
                pin 5 - CTS (CLEAR TO SEND)
                pin 6 - DSR (DATA SET READY)
                pin 7 - GND
                pin 8 - DCD
                pin11 - HSYNC
                pin18 - VSYNC
                pin20 - DTR (DATA TERMINAL READY)
                pin21 - RI

J12:            LINE AUDIO IN (RIGHT)  (from LD player)

J13:            LINE AUDIO IN (LEFT)   (from LD player)

J16: (COUNTER)  pin 1 - TO NEG. OF COIN COUNTER
                pin 2 - +12V
                pin 3 - +12V
                pin 4 - TO NEG. OF COIN COUNTER (SAME AS PIN 1)



RS232 null modem cable for the Sony LD player (terminal mode):

    LD player               PCB P3 

   pin 7 (GND)    TO     pin 1 (GND)
   pin 2 (TxD)    TO     pin 3 (RxD)
   pin 3 (RxD)    TO     pin 2 (TxD)

   pin 4 (RTS) ]      [ pin 4 (RTS)
   pin 5 (CTS) ]      [ pin 5 (CTS)
   
   pin 6 (DSR) ]      [ pin 6 (DSR)
   pin20 (DTR) ]      [ pin20 (DTR)


Connect the pins with ] to each other. 
eg. connect pins 4 and 5 of the connector, on the LD end, together.



Note: On the original harness by Leland, pin 1 was used for GND on
the laser disc end of the RS232 cable. Pin 1 is not connected to
anything inside the LD player, even though it is labelled as ground
in the Sony user manual. If pin 1 is used, the PCB will not be able
to control the laser disc player unless the audio cables are connected
between the LD player and the PCB. Use pin 7, on the LD end of the 
RS232 connector, for ground.


To place the game in Service Mode:

While pressing the service button press the "Player 1" button
then release both buttons.



Sony LDP1450 Laser disc player DIP settings.

Baud rate: (9600)   #1 - DOWN
                    #2 - DOWN
                    #3 - DOWN
                    #4 - UP

Optional Function Selector: (all switches in the down position)

                      
malcor@ozemail.com.au
   
   

 


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