Williams Sinistar, Инструкция по эксплуатации

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Figure 4. RAM Location and Numbering on the CPU Board & ROM Board RAMs
+5v DC Power Supply
Adjustments
Before adjusting the voltage output
, always check the
output at the supply for AC hum. This hum should never
rise above 0.005v on the +5v DC supply. If it does, consult
your schematic drawing set for proper DC voltages
throughout the circuit.
Test for these with the DC setting of your multimeter. Make
a second check using the AC setting. Pay particular
attention to readings at TP5 (top of capacitor C10). If the
voltage here is too low (less than +11v DC) or you find
excessive ripple (more than 700mv rms), replace the
capacitor.
If TP1 is less than +4.95v DC remove R10. If TP1 is still
less than +4.95v DC, the check precision resistors R25 and
R26. If they are within 1% tolerance, the check IC2
.
Self-Diagnostics
If RAM or ROM failure messages are displayed on the CRT
after the “rug pattern” proceed with self-diagnostics. Self-
diagnostic procedures are controlled by the AUTO-
UP/MANUAL-DOWN and ADVANCE switches in the coin
door. (See Figure 1.)
Set the AUTO-UP/MANUAL-DOWN switch to the
MANUAL-DOWN position and depress the ADVANCE
pushbutton. The game is now in its
Diagnostic Mode and
a ROM test is performed. With ROM test results present
on the CRT display, depressing the ADVANCE pushbutton
initiates the RAM test.
Further tests (CMOS, sound, switch, colour RAM, monitor
test patterns) are encountered one after the other as the
ADVANCE pushbutton is depressed (once more for each
subsequent test).
MONITOR TEST PATTERNS
(19" Monitor Upright Games
Only). For ease in monitor adjustments, the monitor may
be slid back and the screen viewed in the CRT mirror
provided on the inside-top of the cabinet.
Remove the two bolts and carefully slide the monitor back
in its shelf; secure the monitor in the extended position by
inserting the two bolts though holes in the monitor base
and monitor shelf provided at the left side of the monitor.
AUTO CYCLE MODE - From the colour bar pattern (or
Game Over with the switch set to AUTO-UP) depress
ADVANCE two times to display GAME ADJUSTMENTS.
1. Position the cursor on AUTO CYCLE with the Joystick
and push the FIRE button.
2. Depress ADVANCE.
3. The system will now sequence through ROM, RAM,
and CMOS RAM tests repeatedly. The coin door must
be open during the Auto Cycle test. If an error is
detected, the test is terminated and the failure
indication is displayed on the CRT.
4. To terminate the Auto-Cycle test, turn the game OFF
and ON.