Citizen GSX-190 Service Manual Page 237

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PN 4237242C
A.2-1
QUICK REFERENCE INFORMATION
SWITCH SETTINGS, JUMPER SETTINGS AND TEST POINTS
A
A.2 SWITCH SETTINGS, JUMPER SETTINGS AND TEST POINTS
AC Power/Vacuum Relay Card
Connectors
Test Points
TP1, TP2-ac in
AT Motherboard
Table A.2-1 AC Power/Vacuum Relay Card Connectors and Line Input Ranges
Connector Range
100 VOLTS 90 - 110 Vac
120 VOLTS 110 - 132 Vac
220 VOLTS 198 - 242 Vac
240 VOLTS 220 - 264 Vac
Table A.2-2 AT Motherboard Switch and Jumper Settings
Switch or Jumper Description MD II Setting
SW1-1 ON - Uses onboard battery
OFF - Uses off-board battery
ON
SW1-2 ON - Enables battery
OFF - Disables battery
ON
SW1-3 ON - Additional wait states for IDE interface
OFF - No additional wait states
OFF
SW1-4 ON - For color adapter
OFF - For monochrome adapter (does not matter when using EGA/VGA)
OFF
W3 (Jumper) 1 to 2, 3 to 4 - 25K or 1 MB
2 to 3 - 4 MB
1 to 2, 3 to 4
C
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