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ERROR
MESSAGES
The WPC game program has the capability to aid the operator and service personnel. At Game Turn-on,
or after pressing the Begin Test switch, (once the game has been operating for an extended period), the
display may signal with the message, "Press ENTER for Test Report". This indicates the game program
has detected a possible problem with the game.
To obtain details of the problem, open the coin door and press the Begin Test switch. Press the Enter
button to begin displaying the message(s). The following messages apply to your game.
ER. MINI PFD. BAD CHK. SWITCHESlMTR
This is saying the mini-playfield is not working correctly. Check the mini-playfield motor (20 - mini
motor left, 19 - mini motor right), Bridge driver board, Power Driver board, CPU board, and the
two mini-playfield limit switches (38 - mini-playfield right and 37 - mini-playfield left). Also check
for blown fuses.
ER. MAGNET OPTO IS NOT WORKING
This is saying that opto switch #33 (inner sanctum) is not working. This switch must be working
for the magnet to be able to capture and throw the ball. Check the opto driver board, 12v power
supply, CPU board and proper alignment of the opto pair. Also check for blown fuses.
ER. BATTLE KICKER OPTO NOT WORKING
This is saying that opto switch #36 (inner sanctum) is not working. This switch must be working
for the magnet to be able to capture and throw the ball. Check the 24 inch opto driver board, 12v
power supply, CPU board and proper alignment of the opto pair. Also check for blown fuses.
ER. LOCKUP IS BAD CHK. SWITCH/COIL
This is saying that the 3 ball lockup at the top of the playfield is not working correctly. Check to
see that the three lockup switches (lockup right #63, lockup middle #64, lockup left #65) are
working properly (check with balls sitting on switches) and that the lockup kickout coil (#02) is
working correctly. Also check for blown fuses.
ER. WALL TGT. BAD CHK. SWITCH/COIL
This is saying that the sanctum wall controlled target is not working correctly. Check to see that
the wall drop down switch (#51) is functioning correctly (it should trigger closed when the wall is
down) and coils #08 (wall target up) & #16 (wall target down) are functioning.
Also check for
blown fuses.
ER. DROP BANK BAD CHK. SWITCH/COIL
This is saying the mini-playfield 4 bank drop targets are not functioning properly. Check the mini
drop bank coil (#24) and the four drop target switches (#85-#88), 12v power supply and the CPU
board. Also check for blown fuses.
ER. BAT. DROP BAD CHK. SWITCH/COIL
This is saying that the single drop target at the entrance to the popper (battlefield) is not
functioning correctly. Check to see that the battle drop down switch (#55) is functioning correctly
(it should trigger closed when the drop target is down) and coils #25 (single drop up) & #36
(single drop down) are functioning. Also check for blown fuses.
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