Merit "Dakota Superstar" Code 4 problem

[stayouttadabunker]

Hi,
I'm trying to fix a 1989 Merit "Dakota Superstar" video pull tab machine.
I'm getting a "Temporarily Out Of Service" message on the screen.
This is what I was able to find out about it>>>

Logic board: 03133125
Program ID: 6730-00-REV B 081491     10MHz
on the main PCB it says: CRT-300 REV A 1989 Merit Industries Inc.
 There's a small PCB board with two 28-pin EEproms that have a label :
6730-00
U1-0B
C1991 M11
the other label is:
6730-00
U2-0B
C1991 M11
There are 3 more 28-pin EEproms on the main PCB that have labels:
1) U46 PTB1/U46/C1991
2) U47/ PTB1/U47/C1991
3) U48/PTB1/U48/C1991
I was wondering if anyone knew what this other message might mean and how to fix:
"TOD Clock Failure"    however, that message went away and the "Temporarily Out Of Service" message came back.
I need any information on resetting the machine, set up, etc.
Maybe someone knows somebody that worked at Merit on repairing these things?
I appreciate any help anyone can give me!
-mark