Midway Gauntlet Dark Legacy, Operation Manual

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Gauntlet: Dark Legacy 15
Chapter 2 Service
H a r d D i s k D r i v e
Switch off AC power. Unlock and open front cabinet door until it rests on chains. Remove metal cover
from electronics assembly. Disconnect power cable from hard disk drive. Unplug ribbon cable from hard
drive and leave attached to CPU board. Remove screws and lift drive assembly from cabinet. Do not stack
or drop drives. Store drives in anti-static bags or approved shipping containers.
Vi d e o C a r d
Switch off AC power. Open front door. If used, remove metal cover top to expose Electronics Assembly.
Disconnect VGA connector. Remove screws holding Video Card to groundplane. Carefully slide Video
Card away from CPU Board, disconnecting PCI edge connector. Use anti-static bags and protective con-
tainers from new parts to store board if not reinstalled.
M e m o r y
ROM (Read Only Memory) circuits contain computer operating instructions. Switch off AC power. Care-
fully note position, then remove using chip extraction tool.
To reinstall memory circuits, orient chip over its socket and press firmly to seat pins. Do not force.
P o w e r S u p p l y
Switch off AC power and disconnect line cord. Unlock and open front door. Unplug IEC connector from
top of supply and wiring harnesses from back. Disconnect DC. power cable from hard disk drive. Remove
two rear screws from supply, then slide from cabinet. Verify line voltage switch setting before reinstalling
power supply.
B a t t e r y
Switch off AC power. Unlock and remove rear door. Remove perforated metal cover. Battery is mounted
on top of integrated circuit at Sound I/O Board Assembly location U28. Use chip extraction tool to grasp
battery edges and pull up firmly to remove device. Set aside with pins facing up. When installing new bat-
tery, align key with slot in integrated circuit.
CAUTION.
Hard disk drives are fragile. Never move cabinet while AC power is on. Never stack or
drop hard disk drives. Store unused hard disk drives in anti-static bags.
CAUTION. Discharge any static electricity built up in your body by touching power supply chassis.
Do this before touching or handling electronic assemblies.
NOTE.
To avoid explosion, replacement batteries must match original in size, voltage rating, and
composition. These batteries are designed for very long life. Do not attempt to recharge. Avoid direct
shorts across terminals or from terminals to ground. Remove from their holders and store in a safe
place until repairs are complete. Dispose of used batteries according to manufacturer's instructions